Chemical and Electrochemical Study on the Effectively of Melilotus Officinali...paperpublications3
Abstract: Melilotus officinalis Extract (M.O.E.) was investigated as a green corrosion inhibitor for Aluminium alloy in 1 M HCl solution using weight loss, hydrogen evolution, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Surface morphology was tested using scanning electron microscope (SEM). The effect of temperature on corrosion behavior with addition of different concentrations was studied in the temperature range of 25-45 ºC by weight loss. Polarization curves reveal that the investigated extract is a mixed inhibitor. The inhibition efficiency was found to increase with increase the investigated extract concentration and increase with increasing solution temperature. The adsorption of the inhibitor on Aluminium alloy surface was found to obey the Tenkin’s adsorption isotherm. The activation and adsorption parameters were calculated and discussed. The results obtained from chemical and electrochemical techniques are in good agreement.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Inhibition, kinetic and thermodynamic effects of new Azo derivatives on iron ...Al Baha University
This investigation is designed to apply an advanced kinetic-thermodynamic model on the experimental data obtained from acidic and alkaline corrosion of iron using mono- and bis-azo dyes as corrosion inhibitors. The inhibition properties of the tested azo dyes on corrosion of iron in HNO3 and NaOH media were analyzed by gravimetric, thermometric and polarization measurements. The three studied methods gave consistent results. Polarization study showed that all the inhibitors are mixed type in acidic, act mainly as cathodic in alkaline solution. The synthesized azo dye derivatives exhibit good inhibition properties, obeys the Frumkin adsorption isotherm. The large values of the change in the standard free energy of adsorption (∆Goads), equilibrium constant (Kads) and binding constant (Kb) revealed that the reactions proceed spontaneously and result in highly efficient physisorption mechanism and stronger electrical interaction between the double layer existing at the phase boundary and the adsorbing molecules. The inhibition efficiency depends on the number of adsorption oxygen sites (OH and OMe groups), their charge density and π-electron clouds. The inhibition efficiency evaluated via theoretical methods was well accorded with reported experimental ones, following the same order as: -naphthyl- ligand > -naphthyl>p-anisdine>p-toluidine >o-toluidine >m-toluidine derivative. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors.
Chemical and Electrochemical Study on the Effectively of Melilotus Officinali...paperpublications3
Abstract: Melilotus officinalis Extract (M.O.E.) was investigated as a green corrosion inhibitor for Aluminium alloy in 1 M HCl solution using weight loss, hydrogen evolution, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. Surface morphology was tested using scanning electron microscope (SEM). The effect of temperature on corrosion behavior with addition of different concentrations was studied in the temperature range of 25-45 ºC by weight loss. Polarization curves reveal that the investigated extract is a mixed inhibitor. The inhibition efficiency was found to increase with increase the investigated extract concentration and increase with increasing solution temperature. The adsorption of the inhibitor on Aluminium alloy surface was found to obey the Tenkin’s adsorption isotherm. The activation and adsorption parameters were calculated and discussed. The results obtained from chemical and electrochemical techniques are in good agreement.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Inhibition, kinetic and thermodynamic effects of new Azo derivatives on iron ...Al Baha University
This investigation is designed to apply an advanced kinetic-thermodynamic model on the experimental data obtained from acidic and alkaline corrosion of iron using mono- and bis-azo dyes as corrosion inhibitors. The inhibition properties of the tested azo dyes on corrosion of iron in HNO3 and NaOH media were analyzed by gravimetric, thermometric and polarization measurements. The three studied methods gave consistent results. Polarization study showed that all the inhibitors are mixed type in acidic, act mainly as cathodic in alkaline solution. The synthesized azo dye derivatives exhibit good inhibition properties, obeys the Frumkin adsorption isotherm. The large values of the change in the standard free energy of adsorption (∆Goads), equilibrium constant (Kads) and binding constant (Kb) revealed that the reactions proceed spontaneously and result in highly efficient physisorption mechanism and stronger electrical interaction between the double layer existing at the phase boundary and the adsorbing molecules. The inhibition efficiency depends on the number of adsorption oxygen sites (OH and OMe groups), their charge density and π-electron clouds. The inhibition efficiency evaluated via theoretical methods was well accorded with reported experimental ones, following the same order as: -naphthyl- ligand > -naphthyl>p-anisdine>p-toluidine >o-toluidine >m-toluidine derivative. This research might provide a theoretical inhibition performance evaluation approach for homologous inhibitors.
THERMODYNAMIC BEHAVIOR OF COMPLEX ANTIMONITE ORE FOR ELECTRODEPOSITION OF MET...Al Baha University
This paper outlines the hydrometallurgical processing and the variouspossible approaches for the recovery of metallic antimony from its antimonite sulphide ore by electrolysis. Thermodynamic calculations havebeen made to find the optimum conditions for roasting and/or sulphateroasting of Wadi Abu Quraiya antimonite ore. The antimonite ore (Sb2S3) is roasted directly without concentration and large savings in reagent and chemical processes are expected. A suitable roasting temperature of 1200 K for 4 hours has been determined. Metallic antimony is' cathodically electrodeposited with a high current efficiency at current densities of 350 to 500 A/m(2) depending on the composition of leach liquor solutions. The results of the electron microscopy investigation confirmed by metal value data in the ASTM cards are in good agreement with the chemical analysis.
ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review Catalogue Document created on 15/04/15 at 18:17:26
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuu...Al Baha University
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum (Article)
Acid-leach residue resulting from the sulphate roasting of Zn-Pb Egyptial carbonate ore is used for the production of lead, after hydrometallurgical treatments. Studies to investigate various baths for the deposition of lead and lead dioxide have been carried out. The results showed a wide variety of electrolysis, either soluble simple salts, or those containing complex anions and in virtually all cases, very high current efficiencies are obtained. The effects of various factors on the electrodeposition of Pb and PbO2 are discussed. In commercial practice, the properties and service requirements dictate the precise electrolyte that should be used since the properties of electrodeposited lead vary with the baths. Mechanism of the electrolytic production of the element and its dioxide is discussed. The results spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
THERMODYNAMIC BEHAVIOR OF COMPLEX ANTIMONITE ORE FOR ELECTRODEPOSITION OF MET...Al Baha University
This paper outlines the hydrometallurgical processing and the variouspossible approaches for the recovery of metallic antimony from its antimonite sulphide ore by electrolysis. Thermodynamic calculations havebeen made to find the optimum conditions for roasting and/or sulphateroasting of Wadi Abu Quraiya antimonite ore. The antimonite ore (Sb2S3) is roasted directly without concentration and large savings in reagent and chemical processes are expected. A suitable roasting temperature of 1200 K for 4 hours has been determined. Metallic antimony is' cathodically electrodeposited with a high current efficiency at current densities of 350 to 500 A/m(2) depending on the composition of leach liquor solutions. The results of the electron microscopy investigation confirmed by metal value data in the ASTM cards are in good agreement with the chemical analysis.
ASDD Area Sistemi Dipartimentali e Documentali, Bologna University, Review Catalogue Document created on 15/04/15 at 18:17:26
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuu...Al Baha University
Electrodeposition of lead and its dioxide from Egyptial carbonate ore residuum (Article)
Acid-leach residue resulting from the sulphate roasting of Zn-Pb Egyptial carbonate ore is used for the production of lead, after hydrometallurgical treatments. Studies to investigate various baths for the deposition of lead and lead dioxide have been carried out. The results showed a wide variety of electrolysis, either soluble simple salts, or those containing complex anions and in virtually all cases, very high current efficiencies are obtained. The effects of various factors on the electrodeposition of Pb and PbO2 are discussed. In commercial practice, the properties and service requirements dictate the precise electrolyte that should be used since the properties of electrodeposited lead vary with the baths. Mechanism of the electrolytic production of the element and its dioxide is discussed. The results spectrophotometric and chemical analyses revealed that the purity of the metal is > 99%.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Chatty Kathy - UNC Bootcamp Final Project Presentation - Final Version - 5.23...John Andrews
SlideShare Description for "Chatty Kathy - UNC Bootcamp Final Project Presentation"
Title: Chatty Kathy: Enhancing Physical Activity Among Older Adults
Description:
Discover how Chatty Kathy, an innovative project developed at the UNC Bootcamp, aims to tackle the challenge of low physical activity among older adults. Our AI-driven solution uses peer interaction to boost and sustain exercise levels, significantly improving health outcomes. This presentation covers our problem statement, the rationale behind Chatty Kathy, synthetic data and persona creation, model performance metrics, a visual demonstration of the project, and potential future developments. Join us for an insightful Q&A session to explore the potential of this groundbreaking project.
Project Team: Jay Requarth, Jana Avery, John Andrews, Dr. Dick Davis II, Nee Buntoum, Nam Yeongjin & Mat Nicholas
Data Centers - Striving Within A Narrow Range - Research Report - MCG - May 2...pchutichetpong
M Capital Group (“MCG”) expects to see demand and the changing evolution of supply, facilitated through institutional investment rotation out of offices and into work from home (“WFH”), while the ever-expanding need for data storage as global internet usage expands, with experts predicting 5.3 billion users by 2023. These market factors will be underpinned by technological changes, such as progressing cloud services and edge sites, allowing the industry to see strong expected annual growth of 13% over the next 4 years.
Whilst competitive headwinds remain, represented through the recent second bankruptcy filing of Sungard, which blames “COVID-19 and other macroeconomic trends including delayed customer spending decisions, insourcing and reductions in IT spending, energy inflation and reduction in demand for certain services”, the industry has seen key adjustments, where MCG believes that engineering cost management and technological innovation will be paramount to success.
MCG reports that the more favorable market conditions expected over the next few years, helped by the winding down of pandemic restrictions and a hybrid working environment will be driving market momentum forward. The continuous injection of capital by alternative investment firms, as well as the growing infrastructural investment from cloud service providers and social media companies, whose revenues are expected to grow over 3.6x larger by value in 2026, will likely help propel center provision and innovation. These factors paint a promising picture for the industry players that offset rising input costs and adapt to new technologies.
According to M Capital Group: “Specifically, the long-term cost-saving opportunities available from the rise of remote managing will likely aid value growth for the industry. Through margin optimization and further availability of capital for reinvestment, strong players will maintain their competitive foothold, while weaker players exit the market to balance supply and demand.”
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
Explore our comprehensive data analysis project presentation on predicting product ad campaign performance. Learn how data-driven insights can optimize your marketing strategies and enhance campaign effectiveness. Perfect for professionals and students looking to understand the power of data analysis in advertising. for more details visit: https://bostoninstituteofanalytics.org/data-science-and-artificial-intelligence/
Adjusting primitives for graph : SHORT REPORT / NOTESSubhajit Sahu
Graph algorithms, like PageRank Compressed Sparse Row (CSR) is an adjacency-list based graph representation that is
Multiply with different modes (map)
1. Performance of sequential execution based vs OpenMP based vector multiply.
2. Comparing various launch configs for CUDA based vector multiply.
Sum with different storage types (reduce)
1. Performance of vector element sum using float vs bfloat16 as the storage type.
Sum with different modes (reduce)
1. Performance of sequential execution based vs OpenMP based vector element sum.
2. Performance of memcpy vs in-place based CUDA based vector element sum.
3. Comparing various launch configs for CUDA based vector element sum (memcpy).
4. Comparing various launch configs for CUDA based vector element sum (in-place).
Sum with in-place strategies of CUDA mode (reduce)
1. Comparing various launch configs for CUDA based vector element sum (in-place).