Synthesis, Structure Investigation and Dyeing Assessment of Novel Bisazo Disp...IOSR Journals
Novel bisazo-disperse dyes were prepared by the coupling of diazotized solutions of various aromatic diamines with 2,4-dihydroxybenzophenone. The resultant bisazo disperse dyes were characterized by elemental analysis, IR and 1H NMR spectral studies. The UV Visible absorption spectral data were investigated in dimethylformamide. and are discussed in terms of structural property relationship. Their dyeing assessment of bisazo disperse dyes has been made on polyester fabrics. The results show that a better hue was obtained on polyester fabrics and have mild to moderate fastness properties.
Synthesis, Structure Investigation and Dyeing Assessment of Novel Bisazo Disp...IOSR Journals
Novel bisazo-disperse dyes were prepared by the coupling of diazotized solutions of various aromatic diamines with 2,4-dihydroxybenzophenone. The resultant bisazo disperse dyes were characterized by elemental analysis, IR and 1H NMR spectral studies. The UV Visible absorption spectral data were investigated in dimethylformamide. and are discussed in terms of structural property relationship. Their dyeing assessment of bisazo disperse dyes has been made on polyester fabrics. The results show that a better hue was obtained on polyester fabrics and have mild to moderate fastness properties.
ABSTRACT:
Benzimidazole is a fused heterocyclic ring containing two nitrogen at position 1 and 3 in five member ring. This ring have large spectrum of biological activity specifically antimicrobial activity. We synthesis benzimidazole derivatives which have great percentage yield than reported and develop synthetic scheme that less time consuming with high purity of compound as well as no need of any kind of chromatography for purification. all compound was recrystallized with ethanol. We develop economical method of synthesis of benimidazole derivatives also characterization was carried out by IR and H1 NMR (CDCl3), Physical Constant, Solubility, Refractive Index. Benzimidazole derivative biologically evaluated on different microorganism. In the result gram negative and gram positive bacteria was Inhibited.
Gatot Trimulyadi Rekso,
Centre for Application of Isotopes and Radiation Technology
NATIONAL NUCLEAR ENERGY AGENCY
Jl. Cinere ,Ps Jumat, PO Box 7002 JKSKL, Jakarta 12070
Fax: 021-7513270, E-mail: gatot28 @ batan.go.id, gatot2811@yahoo.com
Radiation processing can modify the molecules weight, hydrophilic and mechanical properties of chitosan resulting in enhanced properties. Radiation processing also provides a simple and fast method for degradation of chitosan for a specific application.
— In the present work, impact of UV-B radiation (280-
315nm: 0.4 W m-2) on growth, photosynthetic pigments, protein,
ascorbate, proline and lipid peroxidation have been studied in
two cyanobacteria Nostoc muscorum and Synechocystis PCC
6803. UV-B radiation (2 to 6 hrs) leads to 55% inhibition of
growth in Synechocystis PCC 6803 in comparison to control
where as in Nostoc muscorum growth reduces up to 45%. This
UV-B treatment also significantly decreased the contents of
chlorophyll, carotenoids and phycocyanin. Photosynthetic
pigments decreased with increasing doses of UV-B (2 to 6 hrs)
radiation. However, the inhibitory effect in Synechocystis PCC
6803 was more pronounced than in Nostoc muscorum. With
increasing UV-B exposure period, production of ascorbate (19-
45%), proline (12-29%) and lipid peroxidation was significantly
higher in Synechocystis PCC 6803 as compared to control
sample. It was observed that lipid peroxidation enhanced 33 %
than control sample of Synechocystis PCC 6803. Our result shows
that photosynthetic apparatus is the main target of UV-B
radiation causing degradation of photosynthetic pigments. This
study concluded that Synechocystis PCC 6803 was the susceptible
organism for survival in stress condition than Nostoc muscorum.
Evaluation of Uptake of Methylene blue dye by Sulphonated biomass of Cicer ar...IOSR Journals
The uptake of methylene blue by sulphonated biomass of Cicer arientinum is conducted in batch mode. The effect of parameters like contact time, sorbent dose, pH and temperature has been studied. The value Kp is found to be 0.1928 and 0.8727 for initial and final concentrations respectively. The kinetics of biosorption results indicate that sorption process follows pseudo–second order model with determination coefficients greater than 0.988 for sorbent under all experimental conditions. Thermodynamic parameter via KD, and ΔG are calculated indicates, rise in KD, negative ΔG values determine the spontaneity of the process and significantly shows that sorption process is time, temperature and concentration dependant. The adsorption obeys the Langmuir isotherm, Hall separation factor values less than unity and low value of activation energy indicate that sorption is an activated and favorable physical process. The phenomenon of sorption includes liquid-film, mass transfer mechanism is well described by Weber and Morris intraparticle diffusion model. Thus sulphonated biomass of Cicer arientinum(S-III) is a low cost and easily available good sorbent for the removal of MB+ from wastewater.
ABSTRACT:
Benzimidazole is a fused heterocyclic ring containing two nitrogen at position 1 and 3 in five member ring. This ring have large spectrum of biological activity specifically antimicrobial activity. We synthesis benzimidazole derivatives which have great percentage yield than reported and develop synthetic scheme that less time consuming with high purity of compound as well as no need of any kind of chromatography for purification. all compound was recrystallized with ethanol. We develop economical method of synthesis of benimidazole derivatives also characterization was carried out by IR and H1 NMR (CDCl3), Physical Constant, Solubility, Refractive Index. Benzimidazole derivative biologically evaluated on different microorganism. In the result gram negative and gram positive bacteria was Inhibited.
Gatot Trimulyadi Rekso,
Centre for Application of Isotopes and Radiation Technology
NATIONAL NUCLEAR ENERGY AGENCY
Jl. Cinere ,Ps Jumat, PO Box 7002 JKSKL, Jakarta 12070
Fax: 021-7513270, E-mail: gatot28 @ batan.go.id, gatot2811@yahoo.com
Radiation processing can modify the molecules weight, hydrophilic and mechanical properties of chitosan resulting in enhanced properties. Radiation processing also provides a simple and fast method for degradation of chitosan for a specific application.
— In the present work, impact of UV-B radiation (280-
315nm: 0.4 W m-2) on growth, photosynthetic pigments, protein,
ascorbate, proline and lipid peroxidation have been studied in
two cyanobacteria Nostoc muscorum and Synechocystis PCC
6803. UV-B radiation (2 to 6 hrs) leads to 55% inhibition of
growth in Synechocystis PCC 6803 in comparison to control
where as in Nostoc muscorum growth reduces up to 45%. This
UV-B treatment also significantly decreased the contents of
chlorophyll, carotenoids and phycocyanin. Photosynthetic
pigments decreased with increasing doses of UV-B (2 to 6 hrs)
radiation. However, the inhibitory effect in Synechocystis PCC
6803 was more pronounced than in Nostoc muscorum. With
increasing UV-B exposure period, production of ascorbate (19-
45%), proline (12-29%) and lipid peroxidation was significantly
higher in Synechocystis PCC 6803 as compared to control
sample. It was observed that lipid peroxidation enhanced 33 %
than control sample of Synechocystis PCC 6803. Our result shows
that photosynthetic apparatus is the main target of UV-B
radiation causing degradation of photosynthetic pigments. This
study concluded that Synechocystis PCC 6803 was the susceptible
organism for survival in stress condition than Nostoc muscorum.
Evaluation of Uptake of Methylene blue dye by Sulphonated biomass of Cicer ar...IOSR Journals
The uptake of methylene blue by sulphonated biomass of Cicer arientinum is conducted in batch mode. The effect of parameters like contact time, sorbent dose, pH and temperature has been studied. The value Kp is found to be 0.1928 and 0.8727 for initial and final concentrations respectively. The kinetics of biosorption results indicate that sorption process follows pseudo–second order model with determination coefficients greater than 0.988 for sorbent under all experimental conditions. Thermodynamic parameter via KD, and ΔG are calculated indicates, rise in KD, negative ΔG values determine the spontaneity of the process and significantly shows that sorption process is time, temperature and concentration dependant. The adsorption obeys the Langmuir isotherm, Hall separation factor values less than unity and low value of activation energy indicate that sorption is an activated and favorable physical process. The phenomenon of sorption includes liquid-film, mass transfer mechanism is well described by Weber and Morris intraparticle diffusion model. Thus sulphonated biomass of Cicer arientinum(S-III) is a low cost and easily available good sorbent for the removal of MB+ from wastewater.
The current research aimed at fabricating plant extract mediated biosynthesized silver nanoparticles (AgNPs) utilizing thorn extract of Bombax ceiba (TEBC). The synthesized AgNPs was characterized by UV spectroscopy where the surface plasmonic resonance peak (SPR) was located at 222 nm. The scanning electron microscopy (SEM) studies demonstrated that the morphology of fabricated nanomaterials was primarily cylindrical of average size of 20-30 nm with some spindles of size >50 nm. The anti-microbial evaluation against Staphylococcus aureus revealed that AgNPs exhibited notable activity with ZOI of 27.2 mm at MIC of 25 μg/mL. The outcome of this research evidently signified that the biofabricated AgNPs using TEBC may be a new greener approach or technology to formulate anti-bacterial nanodrugs in future.
— Previous researches were made on UHMWPE (Ultra-High-Molecular-Weight-Polyethylene) based implant material and its fusion with Ca-alginate. New methods were made for preparing UHMWPE-Ca-alginate blends. If the coating Ca-alginate salt can be achieved on the surface of UHMWPE, it might lead to an implant material which could promote the bone formation. Earlier results show that we can make the coating layer on the polymer powder surface. Our new approach is to modify the method we made earlier, and this way the alginate layer can withstand washing and sterilization as it's shown in the paper. We also realized that the layer slowly can give off Ca2+ ions which can be absorbed with specific cells. Since we modified the surface structure of the UHMWPE samples we carried out wear testing of the new prepared samples. All of these measurements and experiments have been done as preparative ones to make one time real prosthetic material.
— Oligoguanidine with chain extension were synthesized by condensation and cross-linking polymerizations in an attempt to increase molecular weight and charge density of the anti microbial oligoguanidine. The reactions are procedure at 170 o C for 5h with ratio molar of HMDA: GHC = 1: 1.1, refined by vacuum filter at 60 o C. The Oligoguanidine OHMG.HCl synthesized has molecular weight equal 521 g/mol, chain structure and good water solubility. The comparison results of the antimicrobial activities of oligoguanidine with chloramine B indicated that MIC index of OHMG.HCl is 5ppm during MIC index of chloramine B is 50 ppm; MBC of OHMG.HCl is 12 minutes and MBC of chloramine B is 11 minutes; The SEM, TEM imagines exhibited clear biocide, low residue microorganism of OHMG.HCl. The LC-MS spectrum indicates the presence of haloacetic acid following the bactericidal action of chloramphen B, while OHGM.HCl is not available. This result confirms the environmental friendliness of oligoguanidine.
DETERMINATION OF MIANSERIN USING TROPAEOLIN-OOO BY ION PAIR FORMATIONRatnakaram Venkata Nadh
Objective: The present study was aimed at the development of a simple visible spectrophotometric method for the assay of mianserin, a drug used for the treatment of depression.
Methods: The method was developed using tropaeolin-ooo (TPooo) as an ion associative complex forming a chromophore. Developed the chromophore by sequential mixing of aqueous solutions of mianserin, hydrochloric acid, and TPooo. Chromophore was extracted into an organic solvent (chloroform) and absorbance values of organic layers were measured. As per the existing guidelines of an international conference on harmonization (ICH), various parameters of the method were tested for validation.
Results: At the optimized reaction conditions, the formed chromophore (λ max
Conclusion: Due to lack of pre-treatment process for this method, it was simple. All the tested parameters of the method were validated as per ICH guidelines.
DETERMINATION OF MIANSERIN USING TROPAEOLIN-OOO BY ION PAIR FORMATIONRatnakaram Venkata Nadh
Objective: The present study was aimed at the development of a simple visible spectrophotometric method for the assay of mianserin, a drug used for the treatment of depression.
Methods: The method was developed using tropaeolin-ooo (TPooo) as an ion associative complex forming a chromophore. Developed the chromophore by sequential mixing of aqueous solutions of mianserin, hydrochloric acid, and TPooo. Chromophore was extracted into an organic solvent (chloroform) and absorbance values of organic layers were measured. As per the existing guidelines of an international conference on harmonization (ICH), various parameters of the method were tested for validation.
Results: At the optimized reaction conditions, the formed chromophore (λ max
Conclusion: Due to lack of pre-treatment process for this method, it was simple. All the tested parameters of the method were validated as per ICH guidelines.
In the present study, activated carbon is prepared from Murraya koenigii Stems (MKST) and used for the adsorption of methylene blue
from aqueous solution. The nitrogen adsorption isotherms were used to characterize the pore properties of the activated carbon including
the BET surface area, pore volume and pore diameter. The specific surface area of the prepared carbon is 508 m2/g. Batch mode experiments
were conducted to study the effect of adsorbent dosage on the adsorption of methylene blue. The equilibrium data fits well with Langmuir
model with monolayer adsorption capacity of 123.46 mg/g. The adsorption kinetics was studied using pseudo-first order and pseudosecond
order models. The rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation. The results
show that methylene blue interacts strongly with the prepared activated carbon and hence the adsorbent is good for the removal of
methylene blue from aqueous solution.
Equilibrium and kinetic studies on the adsorption of methylene blue from aque...suresh899
In the present study, activated carbon is prepared from Murraya koenigii Stems (MKST) and used for the adsorption of methylene blue
from aqueous solution. The nitrogen adsorption isotherms were used to characterize the pore properties of the activated carbon including
the BET surface area, pore volume and pore diameter. The specific surface area of the prepared carbon is 508 m2/g. Batch mode experiments
were conducted to study the effect of adsorbent dosage on the adsorption of methylene blue. The equilibrium data fits well with Langmuir
model with monolayer adsorption capacity of 123.46 mg/g. The adsorption kinetics was studied using pseudo-first order and pseudosecond
order models. The rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation. The results
show that methylene blue interacts strongly with the prepared activated carbon and hence the adsorbent is good for the removal of
methylene blue from aqueous solution.
Synthesis, Characterization and Antibacterial Activity of New Complexes of So...IOSR Journals
Complexes of some lanthanide picrates (Ln3+ = Pr3+, Nd3+ and Dy3+) with benzo-18-crown-6 and 221-cryptand were synthesized and characterized by elemental analysis, FTIR, and UV-Visible. Spectrophotometric methods, thermal analysis (TGA & DTG), melting point, magnetic susceptibility and molar conductance. Also an in-vitro study on gram positive (Staphylococcus aureus) and gram negative bacteria (Escherichia coli, Salmonella and pseudomonas aeruginosa) was performed and the results were compared to those of the broad spectrum antibiotic Chloramphinicol. The benzo-18-crown-6 complexes have the general formula of [Ln.L.(Pic)2]Pic.nH2O , where; (Ln3+ = Pr3+, Nd3+, and Dy3+) , (L = Benzo-18-crown-6) , (Pic = Picrate anion) , (n = 1-2). In these complexes two picrate anions are coordinated to the metal ion through the phenolic oxygen and oxygen of the ortho nitro group, thus, the metal ions in these complexes have a coordination number of (10). The complexes of 221-cryptand have the general formula of [Ln.L.(Pic)]Pic2.nH2O where; (Ln3+ = Pr3+, Nd3+, and Dy3+), (L = 221-cryptand), (Pic = Picrate anion), (n = 1,2 or 7). In these complexes one picrate anion is coordinated to the metal ion, also through the phenolic oxygen and the oxygen from the ortho nitro group, thus the metal ions in the cryptand complexes have a coordination number of (9).
Synthesis of silver nanoparticles and its synergistic effects in combination ...Nanomedicine Journal (NMJ)
Abstract
Objectives:
Biofilms are communities of bacteria attached to surfaces through an external polymeric substances matrix. In the meantime, Acinetobacterbaumannii is the predominant species related to nosocomial infections. In the present study, the effect of silver nanoparticles alone and in combination with biocides and imipenem against planktonic and biofilms of A. baumannii was assessed.
Materials and Methods:
Minimum inhibitory concentrations (MICs) of 75 planktonic isolates of A. baumannii were determined by using the microdilution method as described via clinical and laboratory standards institute (CLSI). Among all strains, 10 isolates which formed strong biofilms were selected and exposed to silver nanoparticles alone and in combination with imipenem, bismuth ethandithiol (BisEDT) and bismuth propanedithiol (BisPDT) to determine minimum biofilm inhibitory concentrations (MBIC). Subsequently, minimum biofilm eradication concentrations (MBECs) of silver nanoparticles alone and in combination with imipenem against mature biofilm of the isolates were evaluated.
Results:
Results showed that 29.3% of isolates were susceptible to silver nanoparticles and could inhibit the growth and eradicate biofilms produced by the isolates. For this reason, ∑FIC, ∑FBIC and ∑FBEC ≤ 0.05 were reported which shows synergism between silver nanoparticles and imipenem against not only planktonic cells but also inhibition and eradication of biofilms. The results of ∑FBIC >2 indicated to antagonistic impacts between silver nanoparticles and BisEDT/BisPDT against biofilms.
Conclusion:
It can be concluded that silver nanoparticles alone can inhibit biofilm formation but in combination with imipenem are more effective against A. baumannii in planktonic and biofilm forms.
Thermodynamics and adsorption studies of rhodamine-b dye onto organoclayInnspub Net
Thermodynamics and adsorption studies were conducted with a dye of Rhoda mine-B (RB) on organoclay (OC). Adsorption of the dye was investigated with an initial dye concentration at pH 7±0.3, 298, 308 and 318 K. The adsorption experiments were carried out isothermally at three different temperatures. The Langmuir and Freundlich isotherm models were used to describe the equilibrium data and the results were discussed in details. The thermodynamic parameters such as standard free energy (∆G°), entropy change (∆S°) and enthalpy (∆H°) were calculated for OC. These values showed that adsorption of RB on OC was a spontaneous and endothermic process.
A STUDY TO EVALUATE THE IN VITRO ANTIMICROBIAL ACTIVITY AND ANTIANDROGENIC E...Dr. Pradeep mitharwal
The present paper deals with synthesis and characterization
of some new chromium (III) Schiff base complexes using microwave irradiation
technique as well as conventional heating. The S∩N donor benzothiazolines, 1-
(2-furanyl) ethanone benzothiazoline (Bzt1N
∩
SH), 1-(2-thienyl) ethanone
benzothiazoline (Bzt2N
∩
SH) and 1-(2-pyridyl) ethanone benzothiazoline
(Bzt3N
∩
SH) were prepared by the condensation of ortho-aminothiophenol with
respective ketones in ethanol.
Antibacterial Activity of Schiff Bases Derived from OrthoDiaminocyclohexane, ...inventionjournals
Schiff bases (SBs) are known to possess many biological activities. In this paper we will be interested in nine SBs derived from ortho-diaminocyclohexane, meta-phenylenediamine, 1,6-diaminohexane and benzaldehydes variously substituted by nitro group. We had synthesized, characterized and tested these molecules for their antibacterial properties. Herein our study focuses in particular on the determination of quantum descriptors on which observed antibacterial activity depends, in order to be able to predict biological activities in analogue molecule series. Using quantum chemistry methods at B3LYP / 6-31G (d, p) level, we determined for each molecules, theoretical antibacterial potentials that we correlated to the experimental ones. Calculation results showed that, the energy of the Highest Occupied Molecular Orbital (EHOMO), electronegativity (χ) and electronic energy (E), are the best quantum descriptors related to the antibacterial activity values of studied molecules. The correlation coefficient R 2 indicates that 92.1% of the molecular descriptors defining this model are taken into account with a standard deviation of 0.152.The model significance is reflected by Fischer coefficient F = 7.721: Correlation coefficient of cross-validation = 0.88. This model is acceptable with . The values of the pCE50theo/pCE50exp values of the validation set tend to unity
Synthesis, Characterization and Biological Evaluation of Oxazolone Derivativesijceronline
A series of six 4-aryl Benzelidene-2-phenyl-5- oxazolone derivatives were synthesized by condensation of aromatic aldehydes with N-benzoyl glycine (Hippuric acid) in the presence of sodium acetate and acetic anhydride at room temperature in ethanol. Six of the compounds are new derivatives. The structures of the compounds were evaluated based on 1H-NMR , IR and FTIR methods and by elemental analysis. .All the derivative compounds prepared were tested for their antimicrobial activity by disk diffusion technique. Test organisms: Bacteria like Staphylococcus aureusMTCC 7443 and Salmonella typhimuriumMTCC 733 Fungi like C.albicans and A.flavus The results were compared with those of the standard 0.5% Ciprofloxacin. The derivatives with Salicylaldehyde and cinnamaldehyde were showed excellent activities against E. coli. and Staphylococcus aureusMTCC 7443 : than Salmonella typhimuriumMTCC 733 bacteria. It also showed reasonable activity withFungi like C.albicans than A.flavus
The current research aimed at fabricating plant extract mediated biosynthesized silver nanoparticles (AgNPs) utilizing thorn extract of Bombax ceiba (TEBC). The synthesized AgNPs was characterized by UV spectroscopy where the surface plasmonic resonance peak (SPR) was located at 222 nm. The scanning electron microscopy (SEM) studies demonstrated that the morphology of fabricated nanomaterials was primarily cylindrical of average size of 20-30 nm with some spindles of size >50 nm. The anti-microbial evaluation against Staphylococcus aureus revealed that AgNPs exhibited notable activity with ZOI of 27.2 mm at MIC of 25 μg/mL. The outcome of this research evidently signified that the biofabricated AgNPs using TEBC may be a new greener approach or technology to formulate anti-bacterial nanodrugs in future.
Similar to Synthesis characterization and antibacterial activity using mannich base n [(1-morpholinobenzyl)] benzamide (20)
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
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Gopinath Rebala
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The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
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Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
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Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
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JMeter webinar - integration with InfluxDB and GrafanaRTTS
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In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
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- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Synthesis characterization and antibacterial activity using mannich base n [(1-morpholinobenzyl)] benzamide
1. 350
Original Article Synthesis, Characterization and Antibacterial Activity Using
Mannich Base, N-[(1-Morpholinobenzyl)] Benzamide:
A Structure and Reactivity Study
*,1Subramani M, 1Vaikumdam kannabirran, 2Suriyakumar K
*, 1School of Pharmacy, Surya group of institution, R A Puram, Chennai, India – 600 028.
2School of Engineering , Surya Group of Institutions, Villpuram, India - 605 602.
Print 2231 – 3648
ISSN
Online 2231 – 3656
Abstract
The substituted Mannich base is prepared by condensation of substituted benzaldehyde with benzamide and
secondary amine. Like morpholine. The synthesized morpholinobenzyl benzamide undergoes NMR and IR
spectral studies. The anti microbial activity of various substituted N-[(1-Morpholinobenzyl)] benzamide
compounds studied against various organisms such as staphylococcus aureus, bacillus subtilis, Escherichia coli and
pseudomonas aeruginosa by well diffusion method using DMSO as solvent. The values of zone of inhibition were
found out at 370c for a period of 24 h. It has been found that all the inhibitory action gets enhanced with the
introduction of electron withdrawing groups in the phenyl ring.
Key words: Mannich base, N-[(1-Morpholinobenzyl)] benzamide, Antibacterial activity, Hammet effect.
Introduction
In the field of Synthetic pharmaceutical organic Keeping the above facts in mind and as part of
chemistry is one of the main streams of development continuing efforts on Mannich bases, in the present
and expanding in diverse branches of science. During work the synthesis and characterization of various
the preceding years, synthetic pharmaceutical organic substituted N-[(1-Morpholinobenzyl)] benzamide
chemistry has seen massive growth, not only in terms of compounds and studied the antimicrobial activity to
development of novel methodologies for construction of find out the subsistent effect on MBB.
carbon-carbon and carbon hetero atom bonds but also
in terms of development of new strategies, reagents, Material and Methods
catalysts, transformations and technologies. From the Melting points were determined in an open capillary
survey of presented literature, it appears that Mannich tube with a Thiele tube melting point apparatus.
bases have played a vital role in the development of Elemental analyses were carried out using Perkin-Elmer
synthetic pharmaceutical organic chemistry. It is 24°C CHN-analyzer. IR spectra were recorded on a
renowned from the literature survey that the Perkin Elmer IR spectrophotometer. 1H- NMR spectra
compounds containing amide moiety as a functional was run in (CDCl3) solvent at 200 MHz on a NMR
group have been found to acquire donor properties spectrophotometer (chemical shifts in δ ppm).
and exhibit a wide range of biological activities
Literature study also reveals that a broad spectrum of Synthesis of Mannich base, MBB
biological activity is reported to be associated with a The Mannich base, was synthesized by the
number of heterocyclic compounds. condensation of an ethanolic solution of benzaldehyde,
morpholine and benzamide were taken in 1:1:1 molar
Author for Correspondence: ratio. The mixture was stirred and immersed in cool
Subramani M, condition at first, a yellow sticky mass appeared. It
School of Pharmacy, Surya group of institution, was kept aside with the mother liquor open to
R A Puram, Chennai, India – 600 028. atmosphere for ca. 4-6 days. The yellow solid formed
Email: indiakb@gmail.com was separated by filtration, the supernated liquid was
Int. J. Pharm & Ind. Res Vol - 01 Issue - 04 Oct – Dec 2011
2. 351
washed with distilled water, carbon tetrachloride and Antibacterial study
recrystallised from ethanol. Yield: 82 %; M.P: 172°C. The ligand and its complexes were tested for
Benzaldehyde (1mL, 0.01mol) was then added in small antibacterial activity. Mueller-Hinton agar was used
quantities to the mixture and stirred under ice-bath for testing the susceptibility of microorganisms by well
condition. diffusion method using DMSO as solvent, at a
concentration of 0.01M against Gram positive
(Staphylococcus aureus, Bacillus subtilis) and (Escherichia
coli, Pseudomonas auroginosa) bacteria. The zone of
inhibition against the growth of microorganisms was
determined at the end of an incubation period of 24 h
at 370 C. The order of activity of MBB compounds
towards Staphylococcus aureus, Bacillus subtilis,
Escherichia coli and Pseudomonas auroginosa) is: CN >
Cl > H > CH3 > OCH3. It has been found that the
Table 1: Analytical data of the Mannich bases inhibitory action gets enhanced with the introduction of
Compound Evaluating observations Melting electron-withdrawing cyano and chloro groups in the
Yield
with point phenyl ring. The compounds, however, with electron-
C% H% N% (%)
mol. formula (0C) releasing methyl and methoxy groups are lesser active
H-MBB 76.75 7.25 8.62
170 80 compared to unsubstituted phenyl ring. It appears that
C18H20N2O2 (77.52) (7.53) (9.52)
4-CH3- MBB 65.80 7.16 11.34 there is a linear relationship between logarithm of
178 82
C19H22N2O2 77.92 (7.79) (9.09) zone of inhibition and Hammet substiuent constant. The
4-OCH3- MBB 76.75 7.25 8.62 substiuent constant (σ) for H, CH3, OCH3, Cl and CN is
182 81
C19H22N2O3 (74.07) (7.40) (8.64)
0, -0.17, -0.27, 0.23 and 0.66. According to Hammet,
4-Cl-MBB 76.75 7.25 8.62
184 75 substituents that enhance activity relative to
C18H19N2ClO2 (69.51) (6.40) (8.53)
4-CN-MBB 71.72 6.84 9.18 unsubstituted benzene ring will have positive σ values
181 78
C19H19N3O2 (75.23) (6.58) (13.16) (σ>0).
Conclusion
Table 2: IR spectral data of the Mannich bases (cm-1) In this present paper, we have successfully synthesized
Compound (NH2) (C=O) (C-N-C) (C=N)
H-MBB 3320 1645 1160 --
various substituted N-[(1-morpholinobenzyl)]
4-CH3- MBB 3312 1642 1164 -- benzamide] and characterized by IR and 1H-NMR
4-OCH3- MBB 3361 1635 1140 -- spectral analysis. The antimicrobial activity of the
4-Cl- MBB 3364 1630 1155 -- various substituted N-[(1-morpholinobenzyl)]
4-CN- MBB 3310 1648 1168 2204
benzamide compounds has been extensively studied on
microorganisms such as Staphylococcus aureus, Bacillus
Table 3: 1H NMR spectral data of the Mannich bases subtilis, Escherichia coli and Pseudomonas aeruginosa by
well-diffusion technique. It has been found that all the
(mor N-CH2)
inhibitory action gets enhanced with the introduction of
Compound
(Methyl)
(`H-Aro)
(`H-NH)
(OCH3)
electron-withdrawing groups in the phenyl ring.
H- MBB 7.2 -7.7 5.5 2.5 -- --
Acknowledgements
4-CH3- MBB 7.3 -7.8 5.7 2.7 2.2 -- The author grateful to the Chairman Dr. Guathama
4-OCH3- MBB 7.2 -7.9 5.9 2.6 -- 3.6 Sigamani, Secretary Dr. Ashok sigamani and Director
and Dean of Surya Group of Institution, Vikravandi,
Results and Discussion Villupuram for their constant support and
The analytical, IR and 1H-NMR data of Mannich bases encouragement for carrying out this research work.
are given in Table 1, 2 and 3.
Int. J. Pharm & Ind. Res Vol - 01 Issue - 04 Oct – Dec 2011
3. 352
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