Yimer seid (31 résultats)

Etat : New.

Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - Research Paper (postgraduate) from the year 2013 in the subject Engineering - Chemical Engineering, , language: English, abstract: Waste is the most horrible thing to our environment especially a waste from tannery industries. Kombolcha tannery since it is part of these industries it is affecting the people and brings drastic chance to the environment. Since this is the fact those treatment techniques are necessary to the factory like the one mentioned. In this study an aerobic pond is designed for tannery waste. It is possible to make suitable to our environment by treating it as per the type of the waste and degree of toxicity and hazard. This will be practiced only when the industrialists put themselves in to the boundaries of the industrial legislation otherwise good things will not happen unless the bad situation are developed. For the treatment techniques the one which has lower installation cost and lower running cost were used.Key Words: Anaerobic pond, Tannery waste, Hazard.…

Etat : New.

Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - Bachelor Thesis from the year 2008 in the subject Engineering - Chemical Engineering, grade: A, Bahir Dar University (Bahir Dar University Engineering Faculity), course: Chemical Engineering, language: English, abstract: AbstractMalaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective anti-malarial drugs. Artemisinin is a sesquiterpene lactone found in the leaves and flowers of plants Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Extraction of artemisinin from Artemisia annua is mainly performed using hydrocarbon extraction processes. Extraction with Supercritical CO2, ethanol, ionic liquids, hydroflourocarbon HFC-134a and hexane extraction are extraction technologies and compared majorly in terms of their extraction efficiency, cost and drawback to environment. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method and the first step in this research was solvent extraction using hexane. Step followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. As a result my extractor was very large and it has 14.37m3 capacities it wasn't found in market. So I designed the required larger extractor that should fulfill the target of the project i.e. with simple, rapid, cost effective, environmental friendly and practical method for the isolation of artemisinin from Artemisia annua. The design the extractor I used the optimum ratio between solvent and leaves, optimum extraction time, optimum extraction temperature and optimum design of the stirrer paddles. In these thesis work extractor design, skirt design, bolt design, reinforcement calculations, preliminary equipment design (sizing), economic analysis calculations were included. In the profitability analysis Return on investment, payback period and net present worth calculated and the project was checked its feasibility. The payback period is 1.22yrs and it is economically acceptable that means this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.Key words: artemisinin, sesquiterpene lactone, hexane extraction. …

Taschenbuch. Etat : Neu. Returns to Education and Wage Differential | Evidence from Ghana and Tanzania | Seid Yimer | Taschenbuch | 116 S. | Englisch | 2012 | LAP LAMBERT Academic Publishing | EAN 9783846556610 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Etat : Sehr gut. Zustand: Sehr gut | Sprache: Englisch | Produktart: Bücher | Malaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective drugs. Artemisinin is a sesquiterpene lactone found in the leaves of Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method. So the first step was solvent extraction using hexane and followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. The payback period is 1.22yrs and it is economically acceptable and therefore this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.…

Taschenbuch. Etat : Neu. Anaerobic Pond Design for Kombolcha Tannery | Seid Yimer (u. a.) | Taschenbuch | 64 S. | Englisch | 2013 | LAP LAMBERT Academic Publishing | EAN 9783659346415 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

Taschenbuch. Etat : Neu. Extraction of Artemisinin from Artemisia annua | Seid Yimer | Taschenbuch | 92 S. | Englisch | 2015 | LAP LAMBERT Academic Publishing | EAN 9783659334221 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

Taschenbuch. Etat : Neu. Growth, Poverty and Inequality Effects of Trade Reforms in Ethiopia | A Dynamic Computable General Equilibrium Approach | Seid Yimer | Taschenbuch | 116 S. | Englisch | 2012 | LAP LAMBERT Academic Publishing | EAN 9783659165818 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Research Paper (postgraduate) from the year 2013 in the subject Engineering - Chemical Engineering, , language: English, abstract: Waste is the most horrible thing to our environment especially a waste from tannery industries. Kombolcha tannery since it is part of these industries it is affecting the people and brings drastic chance to the environment. Since this is the fact those treatment techniques are necessary to the factory like the one mentioned. In this study an aerobic pond is designed for tannery waste. It is possible to make suitable to our environment by treating it as per the type of the waste and degree of toxicity and hazard. This will be practiced only when the industrialists put themselves in to the boundaries of the industrial legislation otherwise good things will not happen unless the bad situation are developed. For the treatment techniques the one which has lower installation cost and lower running cost were used.Key Words: Anaerobic pond, Tannery waste, Hazard 60 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Bachelor Thesis from the year 2008 in the subject Engineering - Chemical Engineering, grade: A, Bahir Dar University (Bahir Dar University Engineering Faculity), course: Chemical Engineering, language: English, abstract: AbstractMalaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective anti-malarial drugs. Artemisinin is a sesquiterpene lactone found in the leaves and flowers of plants Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Extraction of artemisinin from Artemisia annua is mainly performed using hydrocarbon extraction processes. Extraction with Supercritical CO2, ethanol, ionic liquids, hydroflourocarbon HFC-134a and hexane extraction are extraction technologies and compared majorly in terms of their extraction efficiency, cost and drawback to environment. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method and the first step in this research was solvent extraction using hexane. Step followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. As a result my extractor was very large and it has 14.37m3 capacities it wasn't found in market. So I designed the required larger extractor that should fulfill the target of the project i.e. with simple, rapid, cost effective, environmental friendly and practical method for the isolation of artemisinin from Artemisia annua. The design the extractor I used the optimum ratio between solvent and leaves, optimum extraction time, optimum extraction temperature and optimum design of the stirrer paddles. In these thesis work extractor design, skirt design, bolt design, reinforcement calculations, preliminary equipment design (sizing), economic analysis calculations were included. In the profitability analysis Return on investment, payback period and net present worth calculated and the project was checked its feasibility. The payback period is 1.22yrs and it is economically acceptable that means this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.Key words: artemisinin, sesquiterpene lactone, hexane extraction 92 pp. Englisch. …

Etat : New. Print on Demand pp. 60.

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The book provides readers deep understanding and frontier of knowledge about analysis of gender wage gap and the economics of education. It consists of much state-of-the-art micro econometric techniques within the quantile regression framework to examine the effects of education on gender pay gap in two African countries. It is of interest to investigate the efficiency and distributional impacts of education as these are crucial topics for public policy making. In the book, the mathematics is more simplified and the different economic concepts and key topics in labor economics are discussed more precisely. The study pays particular attention to discuss the policy implications of the empirical findings of returns to education and the contribution of education to explain the gender pay gap across the wage distributions. Thus, identifying the target households for the placement of public spending is a central feature of the development process given the limited resources. The two persistent problems of endogeneity and sample selection are well controlled, which make the estimation more appealing. 116 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A sizable amount of research has been devoted to examine the short-term impacts of free trade on developing countries. Most of these studies, however, used partial equilibrium analysis and empirical results even become more complicated when openness is a measure of trade liberalization. To consider the interdependencies of various markets, static Computable General Equilibrium (CGE) model is widely used in most of the previous studies. But, the application of dynamic CGE is very scarce in African countries and the long term consequences of trade policy reforms receive less attention. This study addresses two pertinent research gaps in the literature- focuses on the dynamic CGE to consider the dynamic effects of capital accumulation on poverty and income distribution in the medium run and captures the multiplier effects on the different sectors and income groups. In particular, this line of research is relevant for developing world given that less restrictive tariff and non-tariff barriers since early 1990 s and more than 25% of the population is below the poverty line in 2005. The study offers quantitative evidence of the trade-growth-poverty linkage in Ethiopia. 116 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Malaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective drugs. Artemisinin is a sesquiterpene lactone found in the leaves of Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method. So the first step was solvent extraction using hexane and followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. The payback period is 1.22yrs and it is economically acceptable and therefore this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria. 92 pp. Englisch.…

Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This book is based on the original research in one of Ethiopian Leather Industry in 2012. As it is known waste is the most horrible thing to our environment especially a waste from tannery industries, which have been affecting the people and brings drastic to the environment. In this research book an aerobic pond was designed by taking appropriate assumptions and we hope this book is used as a guide for chemical engineering and environmental engineering undergraduate students. In addition to that for engineers who work in industries like leather engineers, it has immense use. We can make our environment suitable by treating industrial wastes and therefore we may create our globe again by decrease the degree of toxicity and hazard of industries. 64 pp. Englisch.…

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - A sizable amount of research has been devoted to examine the short-term impacts of free trade on developing countries. Most of these studies, however, used partial equilibrium analysis and empirical results even become more complicated when openness is a measure of trade liberalization. To consider the interdependencies of various markets, static Computable General Equilibrium (CGE) model is widely used in most of the previous studies. But, the application of dynamic CGE is very scarce in African countries and the long term consequences of trade policy reforms receive less attention. This study addresses two pertinent research gaps in the literature- focuses on the dynamic CGE to consider the dynamic effects of capital accumulation on poverty and income distribution in the medium run and captures the multiplier effects on the different sectors and income groups. In particular, this line of research is relevant for developing world given that less restrictive tariff and non-tariff barriers since early 1990 s and more than 25% of the population is below the poverty line in 2005. The study offers quantitative evidence of the trade-growth-poverty linkage in Ethiopia.…

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Soda ash production companies have a lot of wastage of calcium chloride going on daily and lot of valuable resources are being wasted. If this continues and any solution is not provided then this problem can prove to be very vital for the industry.In this study we look forward to design a major project based on recovery of calcium chloride, which will be fruitful to the industry to solve this setback and hence will be profit making concept.…

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Malaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective drugs. Artemisinin is a sesquiterpene lactone found in the leaves of Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method. So the first step was solvent extraction using hexane and followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. The payback period is 1.22yrs and it is economically acceptable and therefore this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.…

Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The book provides readers deep understanding and frontier of knowledge about analysis of gender wage gap and the economics of education. It consists of much state-of-the-art micro econometric techniques within the quantile regression framework to examine the effects of education on gender pay gap in two African countries. It is of interest to investigate the efficiency and distributional impacts of education as these are crucial topics for public policy making. In the book, the mathematics is more simplified and the different economic concepts and key topics in labor economics are discussed more precisely. The study pays particular attention to discuss the policy implications of the empirical findings of returns to education and the contribution of education to explain the gender pay gap across the wage distributions. Thus, identifying the target households for the placement of public spending is a central feature of the development process given the limited resources. The two persistent problems of endogeneity and sample selection are well controlled, which make the estimation more appealing.…

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Yimer SeidSeid Mohammed Yimer worked as a research officer in International Monetary Fund. Now, he is an economic modeller at Statistics Denmark. He finshed his Msc in economics from Copenhagen University. He also completed his Msc i.…

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Yimer SeidMy name is Seid Yimer, I was born in Tita, Ethiopia in 1986. I got Master of Technology Degree from Addis Ababa University and IIT-Delhi joint master program in Chemical Engineering in 2010 and B.Sc in Chemical Engineering .…

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Yimer SeidMy name is Seid Yimer. I was born in Tita, Ethiopia in 1986. I got Master of Technology degree from Addis Ababa University and IIT- Delhi joint master program in Chemical Engineering in 2010 and B.Sc in Chemical Engineering.…

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Yimer SeidSeid Mohammed Yimer worked as a research officer in International Monetary Fund. Now, he is an economic modeller at Statistics Denmark. He finshed his Msc in economics from Copenhagen University. He also completed his Msc i.…

Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Atnafu TemesgenI am a lecturer in Wollo University Institute of Technology Chemical Engineering department.I got master of Science in Chemical Engineering from Addis Ababa University -Ethiopia and IIT-Delhi postgraduate program in 20.…

Taschenbuch. Etat : Neu. Anaerobic Pond Design for Kombolcha Tannery | Seid Yimer | Taschenbuch | 60 S. | Englisch | 2013 | GRIN Verlag | EAN 9783656375791 | Verantwortliche Person für die EU: GRIN Publishing GmbH, Waltherstr. 23, 80337 München, info[at]grin[dot]com | Anbieter: preigu Print on Demand.…

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Bachelor Thesis from the year 2008 in the subject Engineering - Chemical Engineering, grade: A, Bahir Dar University (Bahir Dar University Engineering Faculity), course: Chemical Engineering, language: English, abstract: AbstractMalaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective anti-malarial drugs. Artemisinin is a sesquiterpene lactone found in the leaves and flowers of plants Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Extraction of artemisinin from Artemisia annua is mainly performed using hydrocarbon extraction processes. Extraction with Supercritical CO2, ethanol, ionic liquids, hydroflourocarbon HFC-134a and hexane extraction are extraction technologies and compared majorly in terms of their extraction efficiency, cost and drawback to environment. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method and the first step in this research was solvent extraction using hexane. Step followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. As a result my extractor was very large and it has 14.37m3 capacities it wasn¿t found in market. So I designed the required larger extractor that should fulfill the target of the project i.e. with simple, rapid, cost effective, environmental friendly and practical method for the isolation of artemisinin from Artemisia annua. The design the extractor I used the optimum ratio between solvent and leaves, optimum extraction time, optimum extraction temperature and optimum design of the stirrer paddles. In these thesis work extractor design, skirt design, bolt design, reinforcement calculations, preliminary equipment design (sizing), economic analysis calculations were included. In the profitability analysis Return on investment, payback period and net present worth calculated and the project was checked its feasibility. The payback period is 1.22yrs and it is economically acceptable that means this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.Key words: artemisinin, sesquiterpene lactone, hexane extractionBooks on Demand GmbH, Überseering 33, 22297 Hamburg 92 pp. Englisch. …

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -The book provides readers deep understanding and frontier of knowledge about analysis of gender wage gap and the economics of education. It consists of much state-of-the-art micro econometric techniques within the quantile regression framework to examine the effects of education on gender pay gap in two African countries. It is of interest to investigate the efficiency and distributional impacts of education as these are crucial topics for public policy making. In the book, the mathematics is more simplified and the different economic concepts and key topics in labor economics are discussed more precisely. The study pays particular attention to discuss the policy implications of the empirical findings of returns to education and the contribution of education to explain the gender pay gap across the wage distributions. Thus, identifying the target households for the placement of public spending is a central feature of the development process given the limited resources. The two persistent problems of endogeneity and sample selection are well controlled, which make the estimation more appealing.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 116 pp. Englisch.…

Taschenbuch. Etat : Neu. Extraction of Artemisinin from Artemisia Annua | Extraction of Artemisinin | Seid Yimer | Taschenbuch | 92 S. | Englisch | 2013 | GRIN Verlag | EAN 9783656362104 | Verantwortliche Person für die EU: GRIN Publishing GmbH, Waltherstr. 23, 80337 München, info[at]grin[dot]com | Anbieter: preigu Print on Demand.…

Taschenbuch. Etat : Neu. This item is printed on demand - Print on Demand Titel. Neuware -Malaria disease is endemic in least developed countries like Ethiopia. The rapid development of drug-resistant malaria parasite strain leaves the need for new effective drugs. Artemisinin is a sesquiterpene lactone found in the leaves of Artemisia annua L and have different chemical structures and higher efficacy than others. The content of artemisinin is very small and from 0.5 to 1.2 % of dry weight of plants in Ethiopia. Since artemisinin is only present in the epidermis of the leaves, leaves were only washed on the outside by stirring appeared to be the most appropriate method. So the first step was solvent extraction using hexane and followed purify by repeated crystallization. Laboratory scale production data and procedures were listed for aremisinin extraction process. By using those data large scale production method was designed. And did material and energy balance calculations for large scale production process carried out by taking scientific approach followed by feasibility study. The payback period is 1.22yrs and it is economically acceptable and therefore this market is promising in Ethiopia in addition to save millions of Ethiopian and African from killer malaria.OmniScriptum SRL, Str. Armeneasca 28/1, office 1, 2012 Chisinau 92 pp. Englisch.…