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The Physical Nature of H_2CO Clouds in Dark Clouds, B5 and L1535
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作者 Y.K. Minn 1, Y.B.Lee 2 1 (Kyung Hee University, Yong in 499-701, Korea) 2 (Seoul National University of Education, Seoul 137-742, Korea) 《天文研究与技术》 CSCD 1999年第S1期250-254,共5页
By fitting the data of the H 2CO 2 mm (140 GHz and 150 GHz), 2cm (1 45GHz) and, 6 cm (4 3GHz) lines we observed in the dark clouds, B5 and L1535, to the values calculated by the hydrostatic equitlibrium polytropic mod... By fitting the data of the H 2CO 2 mm (140 GHz and 150 GHz), 2cm (1 45GHz) and, 6 cm (4 3GHz) lines we observed in the dark clouds, B5 and L1535, to the values calculated by the hydrostatic equitlibrium polytropic model developed by B.E. Turner, we derived the total density, the fractional abundance of H 2CO, the column densities of H 2 and CO, the line temperature arising from various transitions, the line temperature ratio between different transitions, and visual extinction at the cores of the clouds. We also examined the effect of external UV field intensity on the line temperatures and their ratios. 展开更多
关键词 nature CO The physical nature of H2CO Clouds in B5 and L1535 Dark Clouds
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The Origin and Differentiation of the Theories of Human Nature in Pre-Qin China
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作者 GUO Yi 《Frontiers of Philosophy in China》 2015年第2期212-238,共27页
In early China, views concerning human nature underwent significant development, with philosophers moving from seeing it as desire or instinct to seeing it as virtue or essence. Before Confucius's time, human beings... In early China, views concerning human nature underwent significant development, with philosophers moving from seeing it as desire or instinct to seeing it as virtue or essence. Before Confucius's time, human beings' xing, or nature, was construed as desire and instinct, i.e., as a physical nature. The key problem faced by theorists of human nature at that time was how to manage nature with virtue, i.e., how to use virtue to both control and enrich nature. A later, wide-reaching development was the use of qi to explain human nature. Laozi began, taking de or virtue to be the internal essence of the human being; Confucius took de or virtue to be xing or nature. Following this development, the main current of the theory of human nature in the pre-Qin period divided into two branches. One, created by the later Confucius, inherited in part by Zisi, and developed by Mencius, took virtue as nature and insisted on the a priority of internal morality. The other branch, inherited in part by Zisi and developed by the author of Xing Zi Ming Chu and Xunzi, featured the development of the old tradition which took yu, or desire, as nature. 展开更多
关键词 human nature physical nature rational nature Pre-Qin China Laozi CONFUCIUS
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