Journal of eSciences


Study on Decarbonization effect of Ship exhaust Based on Temperature

Research Article of Journal of eSciences Study on Decarbonization effect of Ship exhaust Based on Temperature LI Ke, WANG Zhongcheng, LI Pinyou Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China In order to investigate the effect of temperature of absorption liquid and exhaust temperature of diesel engine on decarbonization efficiency of marine decarbonization tower, the effect of temperature on carbon dioxide absorption efficiency in ship exhaust was studied by means of theory, experiment and simulation. Because of the particularity of the experiment, three exhaust temperatures of 25, 45 and 65 degrees celsius are mainly set up in this paper. The relevant experimental data are collected and analyzed under idle speed, 25% load condition, 50% load condition and 75% load condition, respectively. The experimental results show that under the same load, when the exhaust gas temperature increases, the absorption efficiency shows a downward trend. and the experimental exhaust gas temperature was simulated by Aspen plus software from 35 to 200 degrees celsius respectively. the simulation results show that the absorptivity decreases with the increase of temperature, and the simulation results are consistent with the experimental results, which has a certain reference for the design and operation parameters selection of marine decarburization tower. Keywords: Ship exhaust; Carbon dioxide absorption; NaOH solution; Aspen plus simulation ...

Assessing The Teaching-Learning Roles Of Instructional Leadership In Some Selected Primaey Schools

Research Article of Journal of eSciences Assessing The Teaching-Learning Roles Of Instructional Leadership In Some Selected Primaey Schools Yayew Genet Chekol and Ketema Joro Ayane Salale University The purpose of this study was to investigate teaching –learning roles of instructional leadership in the full cycle primary schools of Chilga woreda, Central Gondar Zone. To meet the objectives of the sudy descriptive survey design was employed. Teachers, principals, supervisors, and woreda education officers were used as primary sources of data, and annual reports and different document records used as secondary sources of data. Regarding to sampling, teachers were selected by lottery method, and principals, supervisors and woreda education officers were selected by purposive sampling method. Questionnaires, interview and document analysis were used as data collection instruments and the data were analyzed through mean, standard deviation and compare means. The finding of this study revealed that almost all instructional leaders were subject specialists, lacks skill and training, and lacks commitment and moral to accomplish their tasks and severe shortage of finance. Based on the findings, it was concluded that: Schools were to some extent incapable of enhancing teachers’ professional skill development and improving the quality of education. The stated vision and defined mission in the school did not command the ownership of its potential stakeholders since it was not supported by its potential stakeholders. Instructional leaders did not possess the required skill, knowledge and attitude through training. In line with the above findings and conclusions it was recommended that: to equip instructional leaderships with necessary knowledge, attitude and skills the Region, Zone and Woreda Education Officials may arrange workshops, seminars, short and long term training in collaboration with different universities, colleges and NGO’s and schools need to think of their own income generating sources on top of government budget through improving their ...

Advantages and Disadvantages of Neoliberalism/Neoliberal Economic policy in General and the case of Ethiopia in Particular

Review Article of Journal of eSciences Advantages and Disadvantages of Neoliberalism/Neoliberal Economic policy in General and the case of Ethiopia in Particular Kebede Lemu Bekelcha1, Aregash Eticha Sefera2 1Corresponding author: Social Anthropology Department, Faculty of Social Sciences and Humanities, Bule Hora University; 2Social Anthropology Department, Faculty of Social Sciences and Humanities, Bule Hora University Introduction: The same dictionary describes Neoliberalism also, which is said to be “a modified or revived form of traditional liberalism, [especially] one based on belief in free market capitalism and the rights of the individual” (Oxford English Dictionary 1989a). Currently because of the age of globalization, the world is becoming to be conceived as a village. One of the major projects of globalization is the integration of the political economy of the less developed regions in to the global political economic order. Accordingly, during the past few decades the continent of Africa has been trying to integrate itself in to the international political economy either forcefully or by consent. Generally, it is obvious that the main theme of neoliberalist is a fundamentalist view of “leaving everything for the market and the private investors with no interference of the government on the economy except keeping law and order. Historical Background of Neoliberalism: Now a day, world is integrated and became a village. The driving force of this integration is the ideology of Neoliberalism. Under this integration states are recommended or forced to open up their markets to foreign companies competitions, to minimize the role of the government in the economy including minimizing the government expense for social security and social goods, to create fertile grounds for the market to be the only means to distribute the wealth of a nation and the prices of goods and services to be determined based on the principles of demand and ...

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