- The document examines the inhibition effect of the antibiotic drug amoxicillin on the corrosion of reinforced steel samples immersed in a simulated concrete pore solution containing chloride ions.
- Potentiodynamic polarization measurements showed that as the concentration of amoxicillin increased, the corrosion potential shifted positively, corrosion current density and corrosion rate decreased, and inhibition efficiency increased, indicating amoxicillin forms a protective film on the steel surface.
- After 7 days, measurements showed the lowest corrosion current density, corrosion rate, and highest inhibition efficiency of 95.03% at a 2.5g/L concentration of amoxicillin, demonstrating it maintains effective corrosion inhibition of reinforced steel in the presence of
Urea fertilizer was tested as a corrosion inhibitor for reinforced steel in simulated concrete pore solution containing chloride ions. Open circuit potential measurements showed that steel samples immersed in solutions with urea moved to a more positive potential compared to the control, indicating urea forms a protective film. Polarization tests after 2 hours showed corrosion current and rate decreased with urea, with 0.5% urea providing 85.5% inhibition efficiency. After 7 days, 0.5% urea still gave the highest inhibition at 86.15%, though performance dropped at 1% concentration, suggesting an optimal amount is required. Urea was found to be an effective corrosion inhibitor for reinforced steel.
Combination of urea-Sn+2 in SCP solution was examined as a corrosion inhibitor for concrete reinforced steel by potentiodynamicpolarization, surface synergist parameter and cyclic voltammetry methods comparing with urea–Zn+2 combination. A synergism parameter (SI) indicated a synergistic effect between urea and Sn+2was exist. Polarization study revealed that formulation consisting of 300 ppm urea+50 ppm Sn+2 in SCP solution provided inhibition efficiency (IF) of 85.93% while 300 ppm urea +50 ppm Zn+2 provided 82.3% IF, and this combination acts as anodic type inhibitor. Cyclic voltammetry curves showed that the steel samples immersed in this formulation has low tendency to pitting corrosion. From these results it can be concluded that urea – Sn+2 inhibitor formulation is a good corrosion n inhibitor for concrete reinforced steel, it can maintain stable passive film on steel surface even in the presence of aggressive chloride ions so it can be used instead of the high toxicityZn+2 inhibitor to improve the corrosion inhibition of urea fertilizer inhibitor.
Emilia sonchifolia extract as green corrosion inhibitor for mild steel in aci...Alexander Decker
This document summarizes a study that investigated the corrosion inhibition properties of Emilia Sonchifolia extract for mild steel in 1.0M sulfuric acid. Key findings include:
1) Emilia Sonchifolia extract was found to inhibit corrosion of mild steel in acidic solution, with inhibition efficiency increasing with higher concentrations of the extract.
2) The extract was found to obey Langmuir adsorption isotherm models, suggesting it adsorbs physically on the steel surface.
3) Thermodynamic analysis revealed the adsorption process was spontaneous and consistent with physisorption, with negative heat of adsorption values ranging from -9 to -28 kJ/mol.
Corrosion Behaviour of 6061 Al-SiC Composites in KOH MediumEditor IJCATR
The present research work deals with the corrosion behaviour of 6061 Al-15% (vol) SiC(P) composites. The addition of the
reinforcement like SiC to Aluminium has been reported to decrease the corrosion resistance of the matrix due to several reasons, one
of them being galvanic action between the reinforcement and the matrix. In the present work, the corrosion behaviour of 6061 Al-15%
(vol) SiC(P) composites in KOH at different concentration (0.5M, 1M, 1.5M) and different temperature (300C, 350C, 400C, 450C, 500C)
was determined by Tafel extrapolation technique. The inhibition action of 8-Hydroxyquinoline on corrosion behaviour of 6061 Al-
15% (vol) SiC(P) composites in KOH at different concentration of inhibitor (200ppm, 400ppm); different concentration of medium
(0.5M, 1M,1.5M) and different temperature (300C, 350C, 400C, 450C, 500C) was investigated. The results indicate that corrosion rate
of Al-SiC composite in KOH increases as the concentration of medium increases and also as temperature of medium increases. The
results indicate that the inhibitor is moderately effective in inhibiting the corrosion of 6061 Al-15% (vol) SiC(P) composites. As the
inhibitor concentration increases, the corrosion rate decreases. The surface morphology of the metal surface was investigated using
scanning electron microscope (SEM). Activation energy was evaluated using Arrhenius equation, and enthalpy of activation and
entropy of activation values were calculated using transition state equation
The effect of ethanol extract of leaves of Conyza Dicorides plant on the corrosion inhibition
of mild steel in 1M HCl solution was investigated by weight loss and electrochemical polarization
techniques at temperature range (25–65 ̊C). The Results obtained showed that the percentage
inhibition efficiency increases with the increasing of inhibitor concentration and decreases with the
increasing of temperature. At a concentration of 2 g/L, the percentage inhibition efficiency reached
about (94.87%) at 25 ̊C. The thermodynamic activation functions of dissolution process and
adsorption parameters were calculated and discussed. Adsorption of the additive was found to follow
the Langmuir adsorption isotherm.
OXYSTELMA ESCULENTUM Stem Extracts as Corrosion Inhibitor for Mild Steel in A...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Thymus Vulgarize extract (TVE) was reported to be good corrosion inhibitor for copper and
brass in acid media. This paper presents experimental study to investigate the efficiency of Thyme
leaves extract as corrosion inhibitor for concrete reinforcing steel samples exposed to alkaline
solution consisting of 2% KOH and 3% NaCl which is a simulation to the chloride contaminated
concrete pore solution (SCP) using open circuit potential and potentiodynamic polarization
technique. Various concentration (100 ml/L, 150 ml/L, 250 ml/L) of TVE were used in this
experiment. Open circuit potential (OCP) measurements indicated a shifting in potential toward
noble direction for steel samples immersed in SCP solution containing TVE compared with control
sample.
Performance of blended corrosion inhibitors for reinforced concreteeSAT Publishing House
This document discusses the performance of blended corrosion inhibitors for reinforced concrete. It summarizes the results of experiments conducted to evaluate the effect of a blend of calcium nitrite and calcium hypophosphite corrosion inhibitors on the physical properties and corrosion resistance of cement and concrete. The experiments found that the corrosion inhibitor blend did not adversely affect the setting time, pH, or compressive strength of cement or concrete. Electrochemical tests also showed that the corrosion inhibitor blend reduced the corrosion current density, demonstrating its potential to control corrosion initiation and propagation in reinforced concrete.
Urea fertilizer was tested as a corrosion inhibitor for reinforced steel in simulated concrete pore solution containing chloride ions. Open circuit potential measurements showed that steel samples immersed in solutions with urea moved to a more positive potential compared to the control, indicating urea forms a protective film. Polarization tests after 2 hours showed corrosion current and rate decreased with urea, with 0.5% urea providing 85.5% inhibition efficiency. After 7 days, 0.5% urea still gave the highest inhibition at 86.15%, though performance dropped at 1% concentration, suggesting an optimal amount is required. Urea was found to be an effective corrosion inhibitor for reinforced steel.
Combination of urea-Sn+2 in SCP solution was examined as a corrosion inhibitor for concrete reinforced steel by potentiodynamicpolarization, surface synergist parameter and cyclic voltammetry methods comparing with urea–Zn+2 combination. A synergism parameter (SI) indicated a synergistic effect between urea and Sn+2was exist. Polarization study revealed that formulation consisting of 300 ppm urea+50 ppm Sn+2 in SCP solution provided inhibition efficiency (IF) of 85.93% while 300 ppm urea +50 ppm Zn+2 provided 82.3% IF, and this combination acts as anodic type inhibitor. Cyclic voltammetry curves showed that the steel samples immersed in this formulation has low tendency to pitting corrosion. From these results it can be concluded that urea – Sn+2 inhibitor formulation is a good corrosion n inhibitor for concrete reinforced steel, it can maintain stable passive film on steel surface even in the presence of aggressive chloride ions so it can be used instead of the high toxicityZn+2 inhibitor to improve the corrosion inhibition of urea fertilizer inhibitor.
Emilia sonchifolia extract as green corrosion inhibitor for mild steel in aci...Alexander Decker
This document summarizes a study that investigated the corrosion inhibition properties of Emilia Sonchifolia extract for mild steel in 1.0M sulfuric acid. Key findings include:
1) Emilia Sonchifolia extract was found to inhibit corrosion of mild steel in acidic solution, with inhibition efficiency increasing with higher concentrations of the extract.
2) The extract was found to obey Langmuir adsorption isotherm models, suggesting it adsorbs physically on the steel surface.
3) Thermodynamic analysis revealed the adsorption process was spontaneous and consistent with physisorption, with negative heat of adsorption values ranging from -9 to -28 kJ/mol.
Corrosion Behaviour of 6061 Al-SiC Composites in KOH MediumEditor IJCATR
The present research work deals with the corrosion behaviour of 6061 Al-15% (vol) SiC(P) composites. The addition of the
reinforcement like SiC to Aluminium has been reported to decrease the corrosion resistance of the matrix due to several reasons, one
of them being galvanic action between the reinforcement and the matrix. In the present work, the corrosion behaviour of 6061 Al-15%
(vol) SiC(P) composites in KOH at different concentration (0.5M, 1M, 1.5M) and different temperature (300C, 350C, 400C, 450C, 500C)
was determined by Tafel extrapolation technique. The inhibition action of 8-Hydroxyquinoline on corrosion behaviour of 6061 Al-
15% (vol) SiC(P) composites in KOH at different concentration of inhibitor (200ppm, 400ppm); different concentration of medium
(0.5M, 1M,1.5M) and different temperature (300C, 350C, 400C, 450C, 500C) was investigated. The results indicate that corrosion rate
of Al-SiC composite in KOH increases as the concentration of medium increases and also as temperature of medium increases. The
results indicate that the inhibitor is moderately effective in inhibiting the corrosion of 6061 Al-15% (vol) SiC(P) composites. As the
inhibitor concentration increases, the corrosion rate decreases. The surface morphology of the metal surface was investigated using
scanning electron microscope (SEM). Activation energy was evaluated using Arrhenius equation, and enthalpy of activation and
entropy of activation values were calculated using transition state equation
The effect of ethanol extract of leaves of Conyza Dicorides plant on the corrosion inhibition
of mild steel in 1M HCl solution was investigated by weight loss and electrochemical polarization
techniques at temperature range (25–65 ̊C). The Results obtained showed that the percentage
inhibition efficiency increases with the increasing of inhibitor concentration and decreases with the
increasing of temperature. At a concentration of 2 g/L, the percentage inhibition efficiency reached
about (94.87%) at 25 ̊C. The thermodynamic activation functions of dissolution process and
adsorption parameters were calculated and discussed. Adsorption of the additive was found to follow
the Langmuir adsorption isotherm.
OXYSTELMA ESCULENTUM Stem Extracts as Corrosion Inhibitor for Mild Steel in A...IJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Thymus Vulgarize extract (TVE) was reported to be good corrosion inhibitor for copper and
brass in acid media. This paper presents experimental study to investigate the efficiency of Thyme
leaves extract as corrosion inhibitor for concrete reinforcing steel samples exposed to alkaline
solution consisting of 2% KOH and 3% NaCl which is a simulation to the chloride contaminated
concrete pore solution (SCP) using open circuit potential and potentiodynamic polarization
technique. Various concentration (100 ml/L, 150 ml/L, 250 ml/L) of TVE were used in this
experiment. Open circuit potential (OCP) measurements indicated a shifting in potential toward
noble direction for steel samples immersed in SCP solution containing TVE compared with control
sample.
Performance of blended corrosion inhibitors for reinforced concreteeSAT Publishing House
This document discusses the performance of blended corrosion inhibitors for reinforced concrete. It summarizes the results of experiments conducted to evaluate the effect of a blend of calcium nitrite and calcium hypophosphite corrosion inhibitors on the physical properties and corrosion resistance of cement and concrete. The experiments found that the corrosion inhibitor blend did not adversely affect the setting time, pH, or compressive strength of cement or concrete. Electrochemical tests also showed that the corrosion inhibitor blend reduced the corrosion current density, demonstrating its potential to control corrosion initiation and propagation in reinforced concrete.
The inhibition effect of hydralazine hydrochloride on corrosion of mild steel...Premier Publishers
The document investigates the inhibition effect of hydralazine hydrochloride on corrosion of mild steel in hydrochloric acid solution. Electrochemical measurements including polarization and electrochemical impedance spectroscopy indicate that hydralazine hydrochloride acts as a mixed-type inhibitor, reducing both the anodic dissolution and cathodic hydrogen evolution reactions. Maximum inhibition efficiency of around 72% was achieved. Thermodynamic analysis revealed that the inhibitor is adsorbed onto the mild steel surface via chemisorption. Scanning electron microscopy showed the formation of a protective film on the steel surface when the inhibitor was present.
Green inhibitors for prevention of metal and alloys corrosion, an overviewAlexander Decker
This document discusses green inhibitors for preventing metal corrosion. It provides an overview of research on plant-based corrosion inhibitors as alternatives to toxic synthetic inhibitors. Several studies examining the corrosion inhibition of mild steel, zinc, carbon steel, and other metals using plant extracts are summarized. Extracts from plants like Brugmansia suaveolens, Cassia roxburghii, Andrographis paniculata, and Moringa oleifera showed high inhibition efficiency of over 98%. The document concludes that while plant extracts show potential as green corrosion inhibitors, more research is still needed to better understand inhibition mechanisms and identify active constituents in extracts.
Investigative studies on the inhibitive effects of Newbouldialaevis extracts ...researchinventy
The inhibitive effects ofNewbouldiaLaevis (NL) leaf extract and magnetic field on copper corrosion in 0.5M H2SO4 aqueous solution were investigated experimentally by gravimetric technique and theoretically using Quantum Chemical calculations. The results show that both NL and the magnetic field caused reduction in corrosion rate. The inhibition efficiency increased with concentration. The magnetic field caused greater increase in the inhibition efficiency. Temperature increase caused a decrease in inhibition efficiency. The activation energy is low and oscillates, possibly due to error factor from non-linearity of the Arrhenius plot. Among the tested isotherms, Langmuir has the highest correlation coefficient of 0.9963 and 0.7935 with and without magnet field respectively. The magnetic field increased the change in free energy, caused the reaction to become spontaneous, one mole of the inhibitor to replace 4 moles of water mole while reducing the number of monolayer of the inhibitor on the metal. The quantum chemical calculations performed on newbouldiaquinone and lapacholconstituents of NL showed that lapachol contributed more to the inhibition efficiency due its low binding energy, high dipole moment, chemical softness and fractional electron transfer. The magnetic field and temperature played opposite roles.
Modelling of Corrosion Inhibition of Mild Steel in Hydrochloric Acid by Crush...theijes
The corrosion inhibition of mild steel in 0.7M, 1.2M and 2.2M HCl by thoroughly pounded fresh leaves of Sida Acuta has been investigated using the weight-loss method. Corrosion rate curves progressively decreased with time. The maximum inhibition efficiency of 71.16% was attained when the crushed leaves of Sida Acuta were added at 15g per litre of 0.7M HCl whilst the corrosion rate reduced from 1.0485 to 0.3006mgcm-2 h -1 . The predictive corrosion rate model was developed using multiple regression and artificial neural network. Predictions of the experimental corrosion rate values by the artificial neural network revealed the importance of independent variables: (time (h), concentration of acid (M) and quantity of extract (g)) in the prediction of the dependent variable (Corrosion rate, CR (mgcm-2 h -1 ). The time of exposure immensely contributed to the prediction of the experimental corrosion rate by 48.9%, followed by the quantity of crushed leaves, 26.2% and finally the concentration of acid, 25.0%. Predictions by the artificial neural network gave minimal errors and were closer to the experimental corrosion rate values in comparison with predictions by multiple regression. The protective film formed on the mild steel surface was analysed by FTIR spectroscopy and surface electron microscopy (SEM). The FTIR analysis revealed that the adsorbed constituents of the pounded fresh leaves of Sida Acuta on the surface of mild steel were associated with the stretching vibrations of C≡C, C=C, C=O and O–H bonds. The SEM image shows that the degradation of the surface of mild steel in an uninhibited solution of 0.7M HCl is localized but the addition of the inhibitor remarkably prevented the surface of mild steel from corrosion. Four adsorption isotherm models were tested and the results show that the corrosion inhibition of mild steel by the crushed fresh leaves of Sida Acuta in hydrochloric acid obeys all the isotherm models with the Langmuir adsorption isotherm maintaining the best fit of R2 = 0.996; El-Awady, R2 = 0.961; Temkin, R2 = 0.952 and Freundlich, R2 = 0.942. The phytochemical analysis of Sida Acuta’s leaves disclosed the presence of alkanoid, tannin, saponin, phytate, flavonoid and phenol.
The document discusses new technologies from companies like Clariant, Baker Hughes, and Modumetal for improving corrosion inhibition in offshore oil and gas projects. Clariant tested a new phosphate ester-based inhibitor that showed better inhibition than traditional imidazoline-based inhibitors, particularly in reducing anodic current. Baker Hughes developed antiagglomerant chemistry that addresses pitting corrosion risks while maintaining hydrate inhibition. Modumetal is working on nanolaminated metal coatings that could strengthen components and reduce the need for corrosion inhibitors by delaying electron exchange during corrosion.
IRJET- Pantoprazole: Inhibition of Mild Steel Corrosion in IM H2SO4 Solut...IRJET Journal
This document studied the inhibition of mild steel corrosion in 1M H2SO4 solution using the drug Pantoprazole as the corrosion inhibitor. Weight loss experiments were conducted to determine the inhibition efficiency of Pantoprazole at different concentrations ranging from 1.1x10-4M to 8.8x10-4M. The maximum inhibition efficiency of 95.77% was achieved at a concentration of 8.8x10-4M. The inhibition efficiency decreased with increasing immersion time from 2 to 8 hours. Pantoprazole is proposed to inhibit corrosion through adsorption onto the mild steel surface via electrostatic interactions between the positively charged steel and the protonated inhibitor molecules.
This document describes a study on the inhibition of mild steel corrosion by a synthesized compound called 3-benzoylmethyl benzimidazolium hexafluoroantimonate (BMBI) in acidic solution. Electrochemical and weight loss experiments were conducted to evaluate BMBI's performance as a corrosion inhibitor at different temperatures and concentrations. The results showed that BMBI was a very effective inhibitor, with inhibition efficiency increasing with higher concentrations and decreasing with higher temperatures. Thermodynamic parameters for BMBI's adsorption on the steel surface were also calculated from the temperature effect data. Overall, BMBI displayed excellent corrosion inhibition properties for mild steel in acidic environments due to the presence of nitrogen atoms in its structure.
The document summarizes a study on the inhibition effect of ampicillin sodium salt on the corrosion of carbon steel in 1M hydrochloric acid (HCl) solution. Weight loss and polarization curve experiments were conducted at different temperatures (303, 313, 323 K) and inhibitor concentrations. The inhibition efficiency increased with increasing inhibitor concentration and temperature. Adsorption of the inhibitor followed the Freundlich isotherm. Calculations of activation energy, heat of adsorption, and thermodynamic parameters showed that ampicillin sodium salt acts as a mixed-type inhibitor for carbon steel corrosion in HCl.
Effect of Annealing Process on the Corrosion Resistance of Aluminium 7075-T6 ...IRJET Journal
This document summarizes research on the effect of annealing process on the corrosion resistance of 7075-T6 aluminum alloy. Samples of the alloy were annealed at 400°C for durations of 4, 8, and 12 hours. Testing showed that annealed samples had lower corrosion resistance and higher corrosion rates than the base metal in 3.5% NaCl solution. Electrochemical polarization revealed that electrode potentials decreased with increasing annealing time. Scanning electron microscopy indicated the most severe intergranular corrosion on samples with the longest annealing time. In general, annealing the 7075-T6 aluminum alloy reduced its corrosion resistance.
Inhibition action of Neem leaves (Azadirachta Indica) extract on the corrosion of 304 stainless steel in 1.0M sulphuric acid solution has been investigated. The investigations were carried out using weight loss method and Scanning Election Microscopy (SEM) analysis. The results showed that the corrosion inhibition efficiency increases with increase in concentration of Neem leaves extract while it decreases with increase of temperature. SEM images indicated that the metal surface was in a better condition in the presence of inhibitor than the specimen exposed in the absence of the inhibitor. Results confirmed that Neem leaves extract acts as an efficient green corrosion inhibitor for 304 stainless steel in 1.0M sulphuric acid solution.
This document summarizes an experimental study on the electrochemical characteristics of coated and uncoated aluminum samples in 0.5 M sulfuric acid solution. Open circuit potential measurements showed that the coated aluminum sample had a slightly more positive potential, indicating it was less susceptible to dissolution. Electrochemical impedance spectroscopy results showed that the coated sample had a larger capacitive loop, meaning it had higher corrosion resistance. Potentiodynamic polarization testing confirmed that the epoxy coating increased the corrosion resistance of the aluminum by lowering the cathodic and anodic reaction rates in the acidic solution. Overall, the coating acted as a barrier to decrease the dissolution of the protective aluminum oxide layer and increase corrosion resistance in the acidic electrolyte.
Thermodynamic characterization of metal dissolution and inhibitor adsorption ...IJRES Journal
The inhibition effect of 1-hexyl-3-methylimidazolium chloride (HMIC) on the corrosion of mild
steel in 2M sulphuric acid solution has been investigated by weight loss. potentiodynamic polarization and
electrochemical impedance spectroscopy. The effect of temperature on the corrosion behavior of mild steel in
2M H2SO4 with addition of inhibitor was studied in weight loss method at the temperature range of 308-328 K.
Results obtained that the inhibition efficiency increases with increasing the concentration of the inhibitor and
decreases with increasing the temperature. Polarization and impedance measurements were in good agreement.
The adsorption of this inhibitor on the mild steel surface obeys the Langmuir adsorption isotherm. Fourier
transform spectroscopy (FTIR) and Scanning electron microscopy (SEM) was also carried out to establish the
corrosion inhibit property of this inhibitor in sulphuric acid medium. Quantum chemical calculations were
performed using density functional theory to find out whether a clear link exists between the inhibitive effect of
the inhibitor and the electronic properties of its main constituents.
The document describes an experiment to determine how corrosion affects the geometric characteristics and theoretical ultimate load-capacity of steel samples. Steel samples were subjected to accelerated electrochemical corrosion in cycles and measured after each cycle. The corrosion caused a non-linear decrease in diameter along the sample length. Theoretical calculations using these geometric data showed that while corrosion caused a slight decrease, it significantly reduced the ultimate load-capacity. The results provide insight into how corrosion progressively impacts steel strength over time.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Studies on Corrosion Characteristics of Carbon Steel Exposed to Na2CO3, Na2SO...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Este documento describe la estructura organizativa de un centro escolar. Incluye órganos de gobierno como el Consejo Escolar y el Claustro de Profesores, que están compuestos por representantes de la comunidad educativa. También describe los órganos unipersonales como el Director, Jefe de Estudios y Secretario. Por último, explica los órganos de coordinación docente como los Equipos de Ciclo, Comisión de Coordinación Pedagógica y Tutores.
The document describes the design and conventions used in the student's media magazine project called "Mainstream". It is aimed at teenage males and follows conventions of indie music magazines. Key aspects include using dark colors with brighter text, retro fonts, and casual photos of solo artists to convey an indie feel. Feedback from a focus group praised the color scheme and composition. The student learned publishing skills from creating the magazine and how to effectively represent target audiences.
Este documento describe la regulación del comportamiento alimentario y el peso corporal. Brevemente:
1) La alimentación permite proveer energía y materia para mantener la estructura corporal y cubrir gastos entre períodos de ingesta.
2) El hipotálamo integra múltiples señales para regular el apetito a corto y largo plazo, manteniendo el balance energético.
3) Factores como la glucosa en sangre, hormonas gastrointestinales y del tejido adiposo influyen en la sensación de hambre y saciedad
The inhibition effect of hydralazine hydrochloride on corrosion of mild steel...Premier Publishers
The document investigates the inhibition effect of hydralazine hydrochloride on corrosion of mild steel in hydrochloric acid solution. Electrochemical measurements including polarization and electrochemical impedance spectroscopy indicate that hydralazine hydrochloride acts as a mixed-type inhibitor, reducing both the anodic dissolution and cathodic hydrogen evolution reactions. Maximum inhibition efficiency of around 72% was achieved. Thermodynamic analysis revealed that the inhibitor is adsorbed onto the mild steel surface via chemisorption. Scanning electron microscopy showed the formation of a protective film on the steel surface when the inhibitor was present.
Green inhibitors for prevention of metal and alloys corrosion, an overviewAlexander Decker
This document discusses green inhibitors for preventing metal corrosion. It provides an overview of research on plant-based corrosion inhibitors as alternatives to toxic synthetic inhibitors. Several studies examining the corrosion inhibition of mild steel, zinc, carbon steel, and other metals using plant extracts are summarized. Extracts from plants like Brugmansia suaveolens, Cassia roxburghii, Andrographis paniculata, and Moringa oleifera showed high inhibition efficiency of over 98%. The document concludes that while plant extracts show potential as green corrosion inhibitors, more research is still needed to better understand inhibition mechanisms and identify active constituents in extracts.
Investigative studies on the inhibitive effects of Newbouldialaevis extracts ...researchinventy
The inhibitive effects ofNewbouldiaLaevis (NL) leaf extract and magnetic field on copper corrosion in 0.5M H2SO4 aqueous solution were investigated experimentally by gravimetric technique and theoretically using Quantum Chemical calculations. The results show that both NL and the magnetic field caused reduction in corrosion rate. The inhibition efficiency increased with concentration. The magnetic field caused greater increase in the inhibition efficiency. Temperature increase caused a decrease in inhibition efficiency. The activation energy is low and oscillates, possibly due to error factor from non-linearity of the Arrhenius plot. Among the tested isotherms, Langmuir has the highest correlation coefficient of 0.9963 and 0.7935 with and without magnet field respectively. The magnetic field increased the change in free energy, caused the reaction to become spontaneous, one mole of the inhibitor to replace 4 moles of water mole while reducing the number of monolayer of the inhibitor on the metal. The quantum chemical calculations performed on newbouldiaquinone and lapacholconstituents of NL showed that lapachol contributed more to the inhibition efficiency due its low binding energy, high dipole moment, chemical softness and fractional electron transfer. The magnetic field and temperature played opposite roles.
Modelling of Corrosion Inhibition of Mild Steel in Hydrochloric Acid by Crush...theijes
The corrosion inhibition of mild steel in 0.7M, 1.2M and 2.2M HCl by thoroughly pounded fresh leaves of Sida Acuta has been investigated using the weight-loss method. Corrosion rate curves progressively decreased with time. The maximum inhibition efficiency of 71.16% was attained when the crushed leaves of Sida Acuta were added at 15g per litre of 0.7M HCl whilst the corrosion rate reduced from 1.0485 to 0.3006mgcm-2 h -1 . The predictive corrosion rate model was developed using multiple regression and artificial neural network. Predictions of the experimental corrosion rate values by the artificial neural network revealed the importance of independent variables: (time (h), concentration of acid (M) and quantity of extract (g)) in the prediction of the dependent variable (Corrosion rate, CR (mgcm-2 h -1 ). The time of exposure immensely contributed to the prediction of the experimental corrosion rate by 48.9%, followed by the quantity of crushed leaves, 26.2% and finally the concentration of acid, 25.0%. Predictions by the artificial neural network gave minimal errors and were closer to the experimental corrosion rate values in comparison with predictions by multiple regression. The protective film formed on the mild steel surface was analysed by FTIR spectroscopy and surface electron microscopy (SEM). The FTIR analysis revealed that the adsorbed constituents of the pounded fresh leaves of Sida Acuta on the surface of mild steel were associated with the stretching vibrations of C≡C, C=C, C=O and O–H bonds. The SEM image shows that the degradation of the surface of mild steel in an uninhibited solution of 0.7M HCl is localized but the addition of the inhibitor remarkably prevented the surface of mild steel from corrosion. Four adsorption isotherm models were tested and the results show that the corrosion inhibition of mild steel by the crushed fresh leaves of Sida Acuta in hydrochloric acid obeys all the isotherm models with the Langmuir adsorption isotherm maintaining the best fit of R2 = 0.996; El-Awady, R2 = 0.961; Temkin, R2 = 0.952 and Freundlich, R2 = 0.942. The phytochemical analysis of Sida Acuta’s leaves disclosed the presence of alkanoid, tannin, saponin, phytate, flavonoid and phenol.
The document discusses new technologies from companies like Clariant, Baker Hughes, and Modumetal for improving corrosion inhibition in offshore oil and gas projects. Clariant tested a new phosphate ester-based inhibitor that showed better inhibition than traditional imidazoline-based inhibitors, particularly in reducing anodic current. Baker Hughes developed antiagglomerant chemistry that addresses pitting corrosion risks while maintaining hydrate inhibition. Modumetal is working on nanolaminated metal coatings that could strengthen components and reduce the need for corrosion inhibitors by delaying electron exchange during corrosion.
IRJET- Pantoprazole: Inhibition of Mild Steel Corrosion in IM H2SO4 Solut...IRJET Journal
This document studied the inhibition of mild steel corrosion in 1M H2SO4 solution using the drug Pantoprazole as the corrosion inhibitor. Weight loss experiments were conducted to determine the inhibition efficiency of Pantoprazole at different concentrations ranging from 1.1x10-4M to 8.8x10-4M. The maximum inhibition efficiency of 95.77% was achieved at a concentration of 8.8x10-4M. The inhibition efficiency decreased with increasing immersion time from 2 to 8 hours. Pantoprazole is proposed to inhibit corrosion through adsorption onto the mild steel surface via electrostatic interactions between the positively charged steel and the protonated inhibitor molecules.
This document describes a study on the inhibition of mild steel corrosion by a synthesized compound called 3-benzoylmethyl benzimidazolium hexafluoroantimonate (BMBI) in acidic solution. Electrochemical and weight loss experiments were conducted to evaluate BMBI's performance as a corrosion inhibitor at different temperatures and concentrations. The results showed that BMBI was a very effective inhibitor, with inhibition efficiency increasing with higher concentrations and decreasing with higher temperatures. Thermodynamic parameters for BMBI's adsorption on the steel surface were also calculated from the temperature effect data. Overall, BMBI displayed excellent corrosion inhibition properties for mild steel in acidic environments due to the presence of nitrogen atoms in its structure.
The document summarizes a study on the inhibition effect of ampicillin sodium salt on the corrosion of carbon steel in 1M hydrochloric acid (HCl) solution. Weight loss and polarization curve experiments were conducted at different temperatures (303, 313, 323 K) and inhibitor concentrations. The inhibition efficiency increased with increasing inhibitor concentration and temperature. Adsorption of the inhibitor followed the Freundlich isotherm. Calculations of activation energy, heat of adsorption, and thermodynamic parameters showed that ampicillin sodium salt acts as a mixed-type inhibitor for carbon steel corrosion in HCl.
Effect of Annealing Process on the Corrosion Resistance of Aluminium 7075-T6 ...IRJET Journal
This document summarizes research on the effect of annealing process on the corrosion resistance of 7075-T6 aluminum alloy. Samples of the alloy were annealed at 400°C for durations of 4, 8, and 12 hours. Testing showed that annealed samples had lower corrosion resistance and higher corrosion rates than the base metal in 3.5% NaCl solution. Electrochemical polarization revealed that electrode potentials decreased with increasing annealing time. Scanning electron microscopy indicated the most severe intergranular corrosion on samples with the longest annealing time. In general, annealing the 7075-T6 aluminum alloy reduced its corrosion resistance.
Inhibition action of Neem leaves (Azadirachta Indica) extract on the corrosion of 304 stainless steel in 1.0M sulphuric acid solution has been investigated. The investigations were carried out using weight loss method and Scanning Election Microscopy (SEM) analysis. The results showed that the corrosion inhibition efficiency increases with increase in concentration of Neem leaves extract while it decreases with increase of temperature. SEM images indicated that the metal surface was in a better condition in the presence of inhibitor than the specimen exposed in the absence of the inhibitor. Results confirmed that Neem leaves extract acts as an efficient green corrosion inhibitor for 304 stainless steel in 1.0M sulphuric acid solution.
This document summarizes an experimental study on the electrochemical characteristics of coated and uncoated aluminum samples in 0.5 M sulfuric acid solution. Open circuit potential measurements showed that the coated aluminum sample had a slightly more positive potential, indicating it was less susceptible to dissolution. Electrochemical impedance spectroscopy results showed that the coated sample had a larger capacitive loop, meaning it had higher corrosion resistance. Potentiodynamic polarization testing confirmed that the epoxy coating increased the corrosion resistance of the aluminum by lowering the cathodic and anodic reaction rates in the acidic solution. Overall, the coating acted as a barrier to decrease the dissolution of the protective aluminum oxide layer and increase corrosion resistance in the acidic electrolyte.
Thermodynamic characterization of metal dissolution and inhibitor adsorption ...IJRES Journal
The inhibition effect of 1-hexyl-3-methylimidazolium chloride (HMIC) on the corrosion of mild
steel in 2M sulphuric acid solution has been investigated by weight loss. potentiodynamic polarization and
electrochemical impedance spectroscopy. The effect of temperature on the corrosion behavior of mild steel in
2M H2SO4 with addition of inhibitor was studied in weight loss method at the temperature range of 308-328 K.
Results obtained that the inhibition efficiency increases with increasing the concentration of the inhibitor and
decreases with increasing the temperature. Polarization and impedance measurements were in good agreement.
The adsorption of this inhibitor on the mild steel surface obeys the Langmuir adsorption isotherm. Fourier
transform spectroscopy (FTIR) and Scanning electron microscopy (SEM) was also carried out to establish the
corrosion inhibit property of this inhibitor in sulphuric acid medium. Quantum chemical calculations were
performed using density functional theory to find out whether a clear link exists between the inhibitive effect of
the inhibitor and the electronic properties of its main constituents.
The document describes an experiment to determine how corrosion affects the geometric characteristics and theoretical ultimate load-capacity of steel samples. Steel samples were subjected to accelerated electrochemical corrosion in cycles and measured after each cycle. The corrosion caused a non-linear decrease in diameter along the sample length. Theoretical calculations using these geometric data showed that while corrosion caused a slight decrease, it significantly reduced the ultimate load-capacity. The results provide insight into how corrosion progressively impacts steel strength over time.
The International Journal of Engineering and Science (The IJES)theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Studies on Corrosion Characteristics of Carbon Steel Exposed to Na2CO3, Na2SO...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Este documento describe la estructura organizativa de un centro escolar. Incluye órganos de gobierno como el Consejo Escolar y el Claustro de Profesores, que están compuestos por representantes de la comunidad educativa. También describe los órganos unipersonales como el Director, Jefe de Estudios y Secretario. Por último, explica los órganos de coordinación docente como los Equipos de Ciclo, Comisión de Coordinación Pedagógica y Tutores.
The document describes the design and conventions used in the student's media magazine project called "Mainstream". It is aimed at teenage males and follows conventions of indie music magazines. Key aspects include using dark colors with brighter text, retro fonts, and casual photos of solo artists to convey an indie feel. Feedback from a focus group praised the color scheme and composition. The student learned publishing skills from creating the magazine and how to effectively represent target audiences.
Este documento describe la regulación del comportamiento alimentario y el peso corporal. Brevemente:
1) La alimentación permite proveer energía y materia para mantener la estructura corporal y cubrir gastos entre períodos de ingesta.
2) El hipotálamo integra múltiples señales para regular el apetito a corto y largo plazo, manteniendo el balance energético.
3) Factores como la glucosa en sangre, hormonas gastrointestinales y del tejido adiposo influyen en la sensación de hambre y saciedad
El documento describe diferentes aspectos de la cultura folclórica chilena, incluyendo juegos, canciones y manifestaciones lúdicas tradicionales infantiles como rondas, trabalenguas, adivinanzas y juegos como el volantín, el luche, las bolitas y la rayuela. Explica que estas expresiones culturales se transmiten de forma oral y anónima de generación en generación.
O documento discute a evolução histórica dos meios de comunicação de massa, desde as pinturas rupestres até a internet moderna, e como esses meios podem influenciar a formação das pessoas ao transmitir informações e cultura.
O documento discute os materiais cerâmicos, incluindo sua obtenção a partir de argilas, as propriedades das argilas e sua classificação. Também descreve vários produtos cerâmicos como tijolos, telhas e suas especificações técnicas de acordo com normas brasileiras.
The document provides an overview of the latest chapter in the story of the Chandler legacy. It recaps events from the previous chapter, including Veronica's continued attempts to sabotage the family. It then follows various storylines - Rin goes on dates, Matt proposes to Karen after graduating, and they have a son despite objections from Matt's ex Jackie. The chapter covers multiple generations and storylines in a lighthearted and comedic style.
La norma técnica colombiana NTC-4114 establece los parámetros e implementación de un sistema de inspecciones planeadas en empresas para identificar condiciones subestándar que puedan causar accidentes. Las inspecciones pueden ser generales, de orden y aseo, o enfocadas en áreas críticas. Se deben establecer objetivos, responsables, frecuencia de inspecciones, listas de verificación e informes. También es necesario dar seguimiento a las acciones correctivas identificadas y medir la efectividad del programa de inspecciones.
This document outlines 32 ways to keep a blog from sucking, including staying relevant to your audience, using spell check, turning on comments, choosing a consistent URL, licensing your content, making subscriptions and reading easy, promoting your blog on social media, and focusing on interesting content. The tips are divided into things to do, such as using simple URLs for popular posts, and things to avoid like split brain blogging across multiple sites. The overall message is to know your goals for blogging and make your blog easy to access and interact with.
STUDY THE CORROSION INHIBITION OF UREA FERTILIZER –Sn+2 FORMULATION ON REINFO...IAEME Publication
This study examines the corrosion inhibition of urea fertilizer formulations containing Sn+2 or Zn+2 ions on reinforced steel in simulated concrete pore solution containing sodium chloride. Potentiodynamic polarization, surface synergism parameter, and cyclic voltammetry methods were used. The results show that a formulation of 300 ppm urea + 50 ppm Sn+2 provided 85.93% inhibition efficiency, outperforming 300 ppm urea + 50 ppm Zn+2 which achieved 82.3% efficiency. Cyclic voltammetry indicated the Sn+2 formulation reduced pitting corrosion tendency. The study concludes that urea-Sn+2 is a good corrosion inhibitor that can maintain a stable passive film on steel in chloride
This document summarizes a study that examined the corrosion inhibition of urea fertilizer formulations containing Sn+2 or Zn+2 on reinforced steel in simulated concrete pore solution with NaCl. Potentiodynamic polarization, surface synergism parameter, and cyclic voltammetry methods were used. The results showed that a formulation of 300 ppm urea + 50 ppm Sn+2 provided 85.93% inhibition efficiency, outperforming 300 ppm urea + 50 ppm Zn+2 at 82.3% efficiency. Cyclic voltammetry also indicated the urea-Sn+2 formulation reduced pitting corrosion tendencies of the steel samples. The study concluded the urea-Sn+2 inhibitor formulation provided effective corrosion inhibition
Performance of blended corrosion inhibitors for reinforced concreteeSAT Journals
Abstract Use of chemical corrosion inhibitors has been recognized as one of the effective way of controlling rebar corrosion in reinforced cement concrete (RCC). Corrosion inhibiting admixtures fall into the specialty admixture category and are used to slow down corrosion of reinforcing steel in concrete. The addition of corrosion inhibitors to the mix, offers a viable corrosion protection measure. There are generally three groups of inhibitors: anodic, cathodic and mixed inhibitors. The effect of these chemicals on various physical properties of cement such as setting time, pH, and compressive strength needs to be explored before use. In the present investigation an attempt has been made to mix two commercially available corrosion inhibitors and evaluate its effect on setting time, pH and compressive strength. In the next part of the study electrochemical test involving the blended chemical corrosion inhibitor were also conducted on RCC slab specimen. Corrosion kinematic parameters have been estimated using potentio-dynamic polarization tests. It has been observed that the corrosion inhibitor does not have any adverse effect on physical properties of cement and cement concrete. The low corrosion current density exhibited by the inhibitor proves their potential in controlling corrosion initiation and propagation. Keywords - Corrosion inhibitors, setting time, compressive strength, corrosion kinematic parameters
The document summarizes a study on using Thymus Vulgarize (thyme) extract as a corrosion inhibitor for reinforced steel in simulated chloride contaminated concrete pore solution. Potentiodynamic polarization and open circuit potential tests were conducted on steel samples immersed in solutions with different concentrations of thyme extract (100-250 ml/L) and a control sample. Results showed that as the concentration of thyme extract increased, corrosion parameters like corrosion current density decreased and inhibition efficiency increased, reaching a maximum efficiency of 89.71% at 250 ml/L thyme extract. This indicates that thyme extract formed a protective film on the steel surface and inhibited corrosion even in the presence of chloride ions over 30 days of immersion. The study demonstrates that
The document summarizes a study on the inhibition of mild steel corrosion in 1M hydrochloric acid solution using an ethanol extract of Conyza Dicorides leaves. Weight loss and electrochemical polarization techniques were used to evaluate the inhibition efficiency at temperatures ranging from 25-65°C. The results showed that inhibition efficiency increased with increasing inhibitor concentration, reaching a maximum of 94.87% at 2g/L and 25°C. Inhibition efficiency decreased with increasing temperature, suggesting physical adsorption of inhibitor molecules. Thermodynamic analysis revealed that adsorption of the inhibitor onto the mild steel surface followed the Langmuir isotherm model.
The document summarizes an investigation into using thiophene derivatives as corrosion inhibitors for an aluminum-silicon alloy in sulfuric acid solution. Three thiophene derivatives were tested as inhibitors using potentiodynamic polarization and electrochemical impedance spectroscopy. Polarization studies showed the inhibitors were anodic and increased inhibition efficiency with increasing concentration. Impedance spectroscopy demonstrated the inhibitors increased charge transfer resistance and formed a protective film. Theoretical calculations supported the experimental results showing the inhibitors adsorb on the alloy surface. In summary, the thiophene derivatives were found to effectively inhibit corrosion of the aluminum-silicon alloy in sulfuric acid.
Experimental and Quantum Chemical Studies on the Corrosion Inhibition Perform...inventionjournals
Corrosion inhibition nature of a synthesized Schiff’s base was studied on the corrosion of mild steel in 1.0 M HCl using weight loss and electrochemical methods. The results indicated that the synthesized Schiff base is an effective inhibitor in reducing the corrosion of mild steel in 1.0 M HCl solution. The inhibitor efficiency of inhibitor increased with inhibitor concentration and showed maximum inhibition efficiency at 300 ppm concentration. The adsorption of inhibitor molecules on to the metal surface obeyed Langmuir Adsorption isotherm. The adsorption mechanism involved both physical and chemical adsorptions. The potentiodynamic polarization studies showed that the inhibitor is a mixed typed inhibitor with more cathodic nature. Potential of zero charge was also determined and the adsorption mechanism discussed. Quantum mechanical studies showed that the Schiff base molecules have the strong tendency to donate electron pairs to the metallic atoms on the surface
Corrosion Inhibition of Carbon Steel In Sulfuric Acid by Sodium CaprylateIJERA Editor
The interaction of a sodium salt of octanoic acid, sodium caprylate (SC), with a carbon steel (CS) surface was
investigated, using range of experimental techniques. It was shown that SC acts as a good CS general corrosion
inhibitor, yielding a maximum corrosion inhibition efficiency of 77%. This high inhibition efficiency is
maintained even at higher temperatures. It was determined that SC inhibits both partial corrosion reactions, and
can thus be considered to be a mixed-type inhibitor. The adsorption of SC on the CS surface was described by
the Langmuir adsorption isotherm. It was found that this process is spontaneous, irreversible and driven by the
entropy gain. The CS surface morphology was studied by SEM and it was demonstrated that SC is a very
effective general corrosion inhibitor of CS. This also was confirmed by contact angle measurements which
showed that the CS surface became more hydrophobic when the SC was added to the solution.
Corrosion Inhibition of Carbon Steel In Sulfuric Acid by Sodium CaprylateIJERA Editor
The interaction of a sodium salt of octanoic acid, sodium caprylate (SC), with a carbon steel (CS) surface was
investigated, using range of experimental techniques. It was shown that SC acts as a good CS general corrosion
inhibitor, yielding a maximum corrosion inhibition efficiency of 77%. This high inhibition efficiency is
maintained even at higher temperatures. It was determined that SC inhibits both partial corrosion reactions, and
can thus be considered to be a mixed-type inhibitor. The adsorption of SC on the CS surface was described by
the Langmuir adsorption isotherm. It was found that this process is spontaneous, irreversible and driven by the
entropy gain. The CS surface morphology was studied by SEM and it was demonstrated that SC is a very
effective general corrosion inhibitor of CS. This also was confirmed by contact angle measurements which
showed that the CS surface became more hydrophobic when the SC was added to the solution.
Electrochemical measurements of anodizing stainless steel type aisiIAEME Publication
This document summarizes an experiment that measured the corrosion resistance of 304 stainless steel samples with different surface treatments. Electrochemical measurements were taken in 3.5% NaCl solution to analyze the corrosion behavior. Samples that were mechanically polished showed the highest corrosion rate. Electropolishing improved corrosion resistance by lowering the corrosion potential and current density. Anodizing further improved corrosion resistance by forming a protective oxide layer, shown by the most negative corrosion potential and lowest current density, as well as the highest pitting potential observed. The results indicate that anodizing 304 stainless steel provides the best protection against corrosion in saline environments.
Electrochemical measurements of anodizing stainless steel type aisiIAEME Publication
This document summarizes an experiment that studied the corrosion behavior of 304 stainless steel specimens that underwent different surface treatments. Electrochemical measurements were taken in 3.5% NaCl solution to analyze the corrosion potential, corrosion current density, and pitting potential. The results showed that specimens treated with anodizing had the most favorable corrosion resistance with the lowest corrosion current density and highest pitting potential. Anodizing improved corrosion resistance by forming a protective oxide layer on the steel's surface. Electropolishing also enhanced corrosion resistance compared to untreated specimens. The study demonstrated that anodizing is an effective technique for improving the pitting corrosion resistance of 304 stainless steel.
Comparison of corrosion behaviour of commercial aluminium engine block and pi...msejjournal
The corrosion behavior of commercial aluminium alloy engine block and piston was investigated in 3.5% NaCl solution. The study was done by conventional gravimetric measurements and complemented by scanning electron microscopy (SEM) and X-ray analyzer (EDX) investigations. The results obtained indicate that the alloys suffers a process of corrosion localized to the area surrounding the precipitates of the Al (Si, Mg) and Al-Mg, which resulted in hemispherical pits. No evidence was found of the formation of crystallographic pitting for exposure times up to 54 days. Gravimetric analysis confirmed that with varying exposure periods the weight loss of the alloys increases and the normal corrosion rate profile of an initial steep rise followed by subsequent fall were observed for both alloys. The rate of corrosion of piston was found to be lower than that of engine block due to presence of Ni and lower percentages of Fe in aluminium piston alloy.
Electrochemical investigations on the inhibition behaviorAliKarimi127
This document discusses the corrosion inhibition properties of di(Resacetophenone) 1,2 cyclohexandiimine (R DACH) Schiff base on steel in 1 M HCl solution. Electrochemical measurements including potentiodynamic polarization, electrochemical impedance spectroscopy, and chronoamperometry were used to evaluate the inhibition efficiency of R DACH at different concentrations and temperatures. The results showed that R DACH is an effective corrosion inhibitor for steel, with inhibition efficiency increasing with increasing concentration. Adsorption of the inhibitor followed the Langmuir isotherm. Activation energy and thermodynamic parameters like enthalpy, entropy, and Gibbs free energy of adsorption were calculated from corrosion currents at different temperatures and
A Study of the Corrosion Inhibition of Mild Steel in 0.5M Tetraoxosulphate (V...IJAEMSJORNAL
This document summarizes a study on the corrosion inhibition of mild steel in 0.5M tetraoxosulphate (VI) acid by Alstonia boonei leaves extract at different temperatures. The results showed that the extract was more effective at inhibiting corrosion at 30°C compared to 50°C and 70°C, with corrosion rate increasing and inhibition efficiency decreasing with increasing temperature. The adsorption of the extract was found to obey the Langmuir adsorption isotherm at all temperatures, indicating the extract occupies specific adsorption sites on the metal surface.
Inhibition of Sulphuric Acid Corrosion of Mild Steel by Surfactant and Its Ad...IOSR Journals
Abstract: The corrosion inhibition effect of surfactant, N,N-Dimethyl-N-(2-Phenoxyethyl)dodecan-1- aminiumbromide(DPDAB) on mild steel corrosion in 0.5M Sulphuric acid was investigated by weight loss, potentiodynamic polarization and Electrochemical impedance spectroscopic techniques. DPDAB is an excellent inhibitor and its inhibition efficiency increases with increase in concentration and maximum inhibition efficiency was observed above the critical micelle concentration (CMC). The polarization curves reveal that DPDAB acts as mixed type inhibitor with predominantly of anodic type. The corrosion inhibition efficiency of DPDAB increases with increase in concentration and decreases with increase in temperature from 298K to 308K and then increases and shows maxima at 318K and then decreases at 328K.. The adsorption of the inhibitor on the mild steel in 0.5M H2SO4 was found to obey Langmuir’s adsorption isotherm. Scanning electronic microscopy (SEM) confirmed the existence of an adsorbed protective film on the metal surface. The kinetic and thermodynamic parameters were calculated and discussed.
Halogen-substituted pyrazolo-pyrimidine derivatives as corrosion inhibitors f...Al Baha University
Sulfuric acid is widely used in several industrial fields, such as acid pickling, acid cleaning and acid descaling, which cause serious corrosion issues. Especially, copper being widely applied in industrial is vulnerable to be corroded by the acid. The usage of corrosion inhibitor is one of the most important techniques for controlling the corrosion. Several organic inhibitors containing hetero-atom, π-electrons and double bond have been applied for the corrosion inhibition of copper, which are found to exhibit high inhibiting properties by providing electrons to interact with metal surface. However, the use of several heterocyclic inhibitors has caused negative impact on the environment due to their toxicity and non-biodegradability. In this paper, pyrazolo-pyrimidine derivatives are found to attract great attention owing to their eco-friendly properties. Corrosion inhibited properties of three pyrazolo-pyrimidine derivatives namely 4-amino pyrazolo-pyrimidine (APP), 3-bromine 4-amino pyrazolo-pyrimidine (Br-APP) and 3-iodine 4-amino pyrazolo-pyrimidine (I-APP) on copper in 0.5 M H2SO4 solution were studied using electrochemical method and surface analysis techniques. Corrosion of copper has been largely inhibited by the inhibitors and the inhibited efficiency increase with the augment of concentration. The adsorption isotherms were simulated to explore the adsorption mode of inhibitors. Furthermore, theoretical calculations were applied to research the mechanism of inhibitors on copper.
Analysis Of Corrosion Inhibitors On Reinforced Steel For Different Concrete G...IRJET Journal
The document analyzes the effect of organic and inorganic corrosion inhibitors on the corrosion resistance of reinforced steel embedded in different concrete grades. Tests were conducted on beam specimens with and without corrosion inhibitor coatings (neem powder and zinc powder) cured in a saline environment. Results show that specimens without inhibitors had the highest corrosion rates based on half-cell potential and weight loss measurements. Specimens with corrosion inhibitor coatings, especially those with more coatings, exhibited lower corrosion rates, with neem powder providing better protection than zinc powder. It was concluded that organic and inorganic corrosion inhibitors can efficiently inhibit corrosion in reinforced steel when used in conjunction with higher concrete grades.
- The document examines the corrosion behavior of API 5L X42 carbon steel samples immersed in sodium chloride (NaCl) and sodium carbonate (Na2CO3) solutions of different concentrations (0.5M and 1.0M) for 1008 hours.
- Experimental results showed the highest corrosion occurred in the 1.0M Na2CO3 solution, as this environment did not form a protective film on the steel samples. The next highest corrosion was in the 0.5M NaCl solution.
- Generally, corrosion rates were higher in environments like Na2CO3 that do not form protective oxide films, and increased with higher concentrations. Corrosion was lower in environments like NaCl that can form
Presentation: Comparative Evaluation Of Epoxy Treated Reinforcement And Ename...IEI GSC
Presentation on Comparative Evaluation Of Epoxy Treated Reinforcement And Enamel Treated Reinforcement made by Dr PK Parhi, Professor of Civil Engineering, College of Engineering & Technology, Bhubaneswar at #33NCCE 33rd National Convention of Civil Engineers at #IEIGSC , Ahmedabad
In the present investigation the corrosion measurements were carried out in 5% NaCl
aqueous solution, 2.5% HCl. solution for predetermined time intervals and varying
percentage concentrations of HCl solution at room temperature. Kinetics of corrosion
effect on samples of Al-Zn alloy, Al-Zn –5wt% flyash and silicon carbide particles and
Al-Zn –10wt% flyash and silicon carbide particles as reinforcement in composite are
studied.
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
Programming Foundation Models with DSPy - Meetup SlidesZilliz
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Digital Banking in the Cloud: How Citizens Bank Unlocked Their MainframePrecisely
Inconsistent user experience and siloed data, high costs, and changing customer expectations – Citizens Bank was experiencing these challenges while it was attempting to deliver a superior digital banking experience for its clients. Its core banking applications run on the mainframe and Citizens was using legacy utilities to get the critical mainframe data to feed customer-facing channels, like call centers, web, and mobile. Ultimately, this led to higher operating costs (MIPS), delayed response times, and longer time to market.
Ever-changing customer expectations demand more modern digital experiences, and the bank needed to find a solution that could provide real-time data to its customer channels with low latency and operating costs. Join this session to learn how Citizens is leveraging Precisely to replicate mainframe data to its customer channels and deliver on their “modern digital bank” experiences.
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
"Frontline Battles with DDoS: Best practices and Lessons Learned", Igor IvaniukFwdays
At this talk we will discuss DDoS protection tools and best practices, discuss network architectures and what AWS has to offer. Also, we will look into one of the largest DDoS attacks on Ukrainian infrastructure that happened in February 2022. We'll see, what techniques helped to keep the web resources available for Ukrainians and how AWS improved DDoS protection for all customers based on Ukraine experience
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
Driving Business Innovation: Latest Generative AI Advancements & Success StorySafe Software
Are you ready to revolutionize how you handle data? Join us for a webinar where we’ll bring you up to speed with the latest advancements in Generative AI technology and discover how leveraging FME with tools from giants like Google Gemini, Amazon, and Microsoft OpenAI can supercharge your workflow efficiency.
During the hour, we’ll take you through:
Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
Ollama Use Case: Learn how Scenario Specialist Dmitri Bagh has utilized Ollama within FME to input data, create custom models, and enhance security protocols. This segment will include demos to illustrate the full capabilities of FME in AI-driven processes.
Custom AI Models: Discover how to leverage FME to build personalized AI models using your data. Whether it’s populating a model with local data for added security or integrating public AI tools, find out how FME facilitates a versatile and secure approach to AI.
We’ll wrap up with a live Q&A session where you can engage with our experts on your specific use cases, and learn more about optimizing your data workflows with AI.
This webinar is ideal for professionals seeking to harness the power of AI within their data management systems while ensuring high levels of customization and security. Whether you're a novice or an expert, gain actionable insights and strategies to elevate your data processes. Join us to see how FME and AI can revolutionize how you work with data!
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
Discover top-tier mobile app development services, offering innovative solutions for iOS and Android. Enhance your business with custom, user-friendly mobile applications.
Monitoring and Managing Anomaly Detection on OpenShift.pdfTosin Akinosho
Monitoring and Managing Anomaly Detection on OpenShift
Overview
Dive into the world of anomaly detection on edge devices with our comprehensive hands-on tutorial. This SlideShare presentation will guide you through the entire process, from data collection and model training to edge deployment and real-time monitoring. Perfect for those looking to implement robust anomaly detection systems on resource-constrained IoT/edge devices.
Key Topics Covered
1. Introduction to Anomaly Detection
- Understand the fundamentals of anomaly detection and its importance in identifying unusual behavior or failures in systems.
2. Understanding Edge (IoT)
- Learn about edge computing and IoT, and how they enable real-time data processing and decision-making at the source.
3. What is ArgoCD?
- Discover ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes, and its role in deploying applications on edge devices.
4. Deployment Using ArgoCD for Edge Devices
- Step-by-step guide on deploying anomaly detection models on edge devices using ArgoCD.
5. Introduction to Apache Kafka and S3
- Explore Apache Kafka for real-time data streaming and Amazon S3 for scalable storage solutions.
6. Viewing Kafka Messages in the Data Lake
- Learn how to view and analyze Kafka messages stored in a data lake for better insights.
7. What is Prometheus?
- Get to know Prometheus, an open-source monitoring and alerting toolkit, and its application in monitoring edge devices.
8. Monitoring Application Metrics with Prometheus
- Detailed instructions on setting up Prometheus to monitor the performance and health of your anomaly detection system.
9. What is Camel K?
- Introduction to Camel K, a lightweight integration framework built on Apache Camel, designed for Kubernetes.
10. Configuring Camel K Integrations for Data Pipelines
- Learn how to configure Camel K for seamless data pipeline integrations in your anomaly detection workflow.
11. What is a Jupyter Notebook?
- Overview of Jupyter Notebooks, an open-source web application for creating and sharing documents with live code, equations, visualizations, and narrative text.
12. Jupyter Notebooks with Code Examples
- Hands-on examples and code snippets in Jupyter Notebooks to help you implement and test anomaly detection models.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/temporal-event-neural-networks-a-more-efficient-alternative-to-the-transformer-a-presentation-from-brainchip/
Chris Jones, Director of Product Management at BrainChip , presents the “Temporal Event Neural Networks: A More Efficient Alternative to the Transformer” tutorial at the May 2024 Embedded Vision Summit.
The expansion of AI services necessitates enhanced computational capabilities on edge devices. Temporal Event Neural Networks (TENNs), developed by BrainChip, represent a novel and highly efficient state-space network. TENNs demonstrate exceptional proficiency in handling multi-dimensional streaming data, facilitating advancements in object detection, action recognition, speech enhancement and language model/sequence generation. Through the utilization of polynomial-based continuous convolutions, TENNs streamline models, expedite training processes and significantly diminish memory requirements, achieving notable reductions of up to 50x in parameters and 5,000x in energy consumption compared to prevailing methodologies like transformers.
Integration with BrainChip’s Akida neuromorphic hardware IP further enhances TENNs’ capabilities, enabling the realization of highly capable, portable and passively cooled edge devices. This presentation delves into the technical innovations underlying TENNs, presents real-world benchmarks, and elucidates how this cutting-edge approach is positioned to revolutionize edge AI across diverse applications.