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Relationship between the Three Laws of Dialectics of Nature and Agricultural Development
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作者 Qianru ZHU 《Asian Agricultural Research》 2023年第7期20-21,共2页
Based on the three laws of dialectics of nature-the law of unity of opposites, the law of mutual change of quality and the law of negation of negation, this paper analyzes the relationship between the three laws and a... Based on the three laws of dialectics of nature-the law of unity of opposites, the law of mutual change of quality and the law of negation of negation, this paper analyzes the relationship between the three laws and agricultural development, and proposes making good use of the three laws to promote the better development of agriculture and realize agricultural modernization. 展开更多
关键词 Dialectics of nature law of unity of opposites law of mutual change of quality law of negation of negation Agricultural development
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Multi-Barycenter Mechanics, N-Body Problem and Rotation of Galaxies and Stars
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作者 Honglai Zhu 《Journal of Applied Mathematics and Physics》 2023年第10期3251-3273,共23页
In the present paper, the establishment of a systematic multi-barycenter mechanics is based on the multi-particle mechanics. The new theory perfects the basic theoretical system of classical mechanics, which finds the... In the present paper, the establishment of a systematic multi-barycenter mechanics is based on the multi-particle mechanics. The new theory perfects the basic theoretical system of classical mechanics, which finds the law of mutual interaction between particle groups, reveals the limitations of Newton’s third law, discovers the principle of the intrinsic relationship between gravity and tidal force, reasonably interprets the origin and change laws for the rotation angular momentum of galaxies and stars and so on. By applying new theory, the multi-body problem can be transformed into a special two-body problem and for which an approximate solution method is proposed, the motion law of each particle can be roughly obtained. 展开更多
关键词 Multi-Barycenter Mechanics Translation Principle for a Vector System Variation Principle for a Vector Origin and Change laws for the Rotation Angular Momentum of Galaxies and Stars Multi-Body Problem
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Theory and Practice of High-Level Sprint Training Based on Accurate Sectional Timing
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作者 XING Yu ZHU Detao +2 位作者 YANG Qin ZHAO Wenxiang CAO Zhi 《Journal of Sports Science》 2023年第1期7-15,共9页
There is an obvious gap in sprint level at home and abroad,and there are different opinions on the reasons.According to the analysis,physical energy and its distribution in each segment are the main factors restrictin... There is an obvious gap in sprint level at home and abroad,and there are different opinions on the reasons.According to the analysis,physical energy and its distribution in each segment are the main factors restricting the sprint performance in China.Different from middle and long-distance running,we must rely on accurate sectional timing technology to master the law of speed-physical energy change in the process of sprint.Each stage is an integral part of the whole dash process,and each part restricts each other.Each stage has a relative best achievement.Simply pursuing the optimal state of segment is not only not helpful to the final result,but also counterproductive. 展开更多
关键词 Accurate sectional timing high level sprint training speed-physical energy change law.
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A METROD PREDICTING RESPONSE OF SEDIMENT YIELD TO POSSIBIE CHANGE OF PRECIPITATION DUE TO GLOBAL GREENHOUSE WARMING:AN EXAMPIE FROM NORTH FRINGE OF THE LOESS PLATEAU, CHINA 被引量:1
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作者 Xu Jiongxin(Institute of Geography, CAS, Beijing 100101 People’s Republic of China) 《Journal of Geographical Sciences》 SCIE CSCD 1994年第Z2期159-172,共14页
Starting from the supposition of time-space substitution, the Langbein-Schumm's Law was applied to deal with response of fluvial erosion System to the changes in mean annual Precipitation induced by global green-h... Starting from the supposition of time-space substitution, the Langbein-Schumm's Law was applied to deal with response of fluvial erosion System to the changes in mean annual Precipitation induced by global green-house warming. As a result, a simple method was put forward to predict change in sediment yield, with Ningxia Hui Autonomous Region in the northern fringe of the Loess Plateau of China as an example. Results show that, even the change in mean annual precipitation is the same, the direction and magnitude of the resultant chang in sediment yteld would be quite different in fferent physico-geographical zones. When mean annual precipitation is increased, sediment yield in arid or semi-arid areas with a mean anntal Peripitation of less than 400 mm will be increased, while sediment yield in sub-humid or humid areas with a mean annual precipitation of more than 400 mm will be decreased.Additionally, the complex response of fluvial erosion system in time series due to the lag of change in vegetation behind the changn in precipitation has also been qualitatively discussed in this paper. 展开更多
关键词 sediment yield Langbein-Schumm's law prediction of changed sediment yield global green-house warming complex response
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