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Economic Value of Crop Productivity Biodiversity in ljebu Ode Agricultural Zone of Ogun State, Nigeria

Sociology Study 2016年第2期6卷 111-123页

作者： Ayinde Alani Ezekiel Igbekele Amos Ajibefun taiwo nuraeni akinniran Folayimi Ogunwole-Olapade Ladoke Akintola University of Technology Nigeria Federal University of Tech-nology Nigeria

Biological diversity involves genetic, species, and ecosystem diversity. Genetic diversity denotes the variation within species in the functional units of heredity present in any plant or animal, microbial or other origin of living things. Species diversity encompasses the variety of species--whether wild or domesticated, within a geographical area. This study assesses the economic value of crop productivity biodiversity in Ijebu Ode agricultural zone of Ogun State. The authors proposed a dynamic model of market equilibrium with vertical product differentiation that enabled us to take into account the economic consequences of respondents＇ monthly income and species crop of three different communities. The objectives of the study are to identify the personal and socio-economic characteristics of farmers and determine the importance of biodiversity in the study area using Simpson＇s Index. The result showed that 52.50% were male, majority （32.50%） were within the age range of 31 and 40 years old, 44.17% were married, 62.50% had household size of 6-10, and majority （45.83%） had secondary education while 46.67% had up to 20 years farming experience. In conclusion, the authors find that effective factors play an important role in explaining the support for biodiversity conservation, particularly when people do not have specific knowledge about species; while ecological-scientific considerations appear when people are well-informed.

关键词： Economic value crop productivity biodiversity consumers

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Ammonia Removal from Wastewater through Combination of Absorption Process in the Membrane Contactor and Advance Oxydation Process in Hybride Plasma-Ozone Reactor

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Journal of Environmental Science and Engineering(A) 2012年第9期1卷 1101-1107页

作者： Sutrasno Kartohardjono Puji Lestari Handayani Seswila Deflin Yuniar nuraeni Setijo Bismo Chemieal Engineering Department Universitas Indonesia Depok 16424 Indonesia

Wastewater containing high concentrations of ammonia can be harmful to aquatic life and degrade the water quality. Wastewater containing ammonia is usually removed by conventional methods such as aeration in towers, biological treatment and adsorption of the ammonium ion to the zeolite surface. However, these methods are less effective and relatively expensive. Therefore there is a need for alternative technologies that can improve the efficiency of ammonia removal from wastewater. This study aims to obtain the process of ammonia removal through a combination of absorption in the membrane contactor and the advance oxidation process in the hybrid plasma-ozone reactor. Wastewater containing ammonia used in the study was a synthetic wastewater with a concentration of about 800 ppm. In the experiment, the wastewater fi＇om the reservoir was firstly passed into the membrane contactor on the shell side, and then mixed with ozone from the ozonator befbre entering the plasma reactor, and finally was circulated back to the reservoir. Meanwhile, the absorbent solution was sent to the lumen fiber in membrane contactor. Experimental results showed that the ammonia removal efficiency increases with increasing in circulation rate and temperature of the wastewater. The highest efficiency of ammonia removal obtained from the experimental results was 77%.

关键词： Ammonia removal efficiency membrane contactor ozone plasma reactor.

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印尼高中数学教科书内容及结构变化研究——以Yrama Widya出版公司和教育文化部版理科教科书为例

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中学数学杂志 2021年第3期 24-28页

作者：王奋平 nuraeni Ratna Sari 金陵科技学院 210024 南京师范大学 210024 印尼西爪哇省苏家武眉第三高中

和中国一样,印度尼西亚正在进行高中数学课程改革,高中数学教科书也随之不断进行修订和完善,教科书内容和编写风格、编写模式的变化体现了该国教育思想的变化.和2006版高中数学教科书相比,印尼2013版高中数学教科书内容大幅减少,但是更... 详细信息

和中国一样,印度尼西亚正在进行高中数学课程改革,高中数学教科书也随之不断进行修订和完善,教科书内容和编写风格、编写模式的变化体现了该国教育思想的变化.和2006版高中数学教科书相比,印尼2013版高中数学教科书内容大幅减少,但是更加注重"解决问题"导向的数学学习模式,注重将数学知识融入情境问题中,学习主题深度加深,各主题知识范围也扩大了.

关键词：印度尼西亚高中数学理科教科书比较

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