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Educational Achievement, age Distribution and the Disables

Management Studies 2018年第5期6卷 414-424页

作者： Jitesh Chandra Saha Govt. Degree College Dhalai Tripura India

Educational achievement and age correlatives may have significant bearings on generation, maintenance, and sustenance of environment to disseminate education for comprehensive development of learners as permeation of learning and its diffusion rate may vary depending upon different achievements on literacy scale for different age groups. More so, for disable learners as such learners need additional initiatives and assisting environment of even more literate fellow beings constituting surroundings. From this perspective, this paper makes a descriptive analytical effort to present census （2011） results in evaluating overall literacy position and that for disable ones alongwith environment availability through simple statistical tools

关键词： census literacy age composition educational environment disable learners

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Behavioral migration diversity of the Yangtze River Japanese Eel,Anguilla japonica,based on otolith Sr/Ca ratios

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Zoological Research 2011年第4期32卷 442-450页

作者：郭弘艺郑怡唐文乔沈皓魏凯谢正丽 Katsumi Tsukamoto 上海海洋大学鱼类研究室上海201306 复旦大学现代物理研究所上海200433 东京大学海洋大气研究所

The Yangtze River estuary is the main production area of Anguilla japonica in China,as well as the only existing fishery area for adult *** eels are distributed in the main rivers and many tributaries from the Yangtze River estuary to the upper Jinsha River,which extend to nearly 3 000 ***,their migration behaviors remain relatively *** analyzed the biological characteristics of 153 specimens of silver eels collected from the Jingjiang section of Yangtze River（31o30＇N,120o42＇E） between September and November,2008,and tested the sagittal Sr/Ca ratios of 27 *** the 153 specimens examined,85 were female and 68 were male,which translated to a female-male ratio of 1：*** ages of the female specimens ranged from 3 to 7 a（average 5.52） with an average total length（TL） of（669±80） mm,average body weight（BW） of（555±229）g,average condition factor of 1.77±0.22,and average gonad somatic index（GSI） of 1.32±*** ages of the males ranged from 3 to 5 a（average：4.38） with an average TL of（518±51） mm,average BW of（234±76） g,average condition factor of 1.62±0.18,and average GSI of 0.21±*** biological parameters of females were significantly larger than those of the male specimens（P0.05）.According to the average Sr/Ca ratio（7.99±1.05） ×10-3 of the elver mark of sagitta,17 individuals（62.96%） were river eels and 10 individuals（37.04%） were estuarine *** 16 females,13 individuals（81.25%） were river eels and 3 were estuarine eels,while of 11 males,36.36% were river eels and 63.64% were estuarine *** analysis on Sr/Ca ratios for every growth layer group（GLG） indicated there were no significant differences between second-age males and ***,significant differences were observed between the third-age,fourth-age,and migration-age male and female *** was likely related to the fact that second-age eels of both sexes stay in the same inhabitation waters;however,as they grow older,they move to different areas.

关键词： Sagitta age composition Growth parameter Anguilla japonica Silver eel Yangtze River estuary

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