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Search Results: 1 - 10 of 527109 matches for " <br>王振吉 "
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The Experiment of Domestication and Artificial Breeding of Piebald Naked Carp in Three Circumstances
花斑裸鲤在3种环境中的驯化养殖试验

SHEN Zhi-xing,WANG Si-de,WANG Guo-jie,WANG Zhen-ji,<br>申志新,思德,王国杰,
水生态学杂志 , 2011,
Abstract: 摘要:本文首次报道了黄河上游特有鱼类花斑裸鲤在池塘、流水池、网箱中人工驯化养殖试验情况,对黄河上游土著鱼类的人工繁育和增殖保护具有一定借鉴意义。
Reproductive strategy and impact on the fig-pollinator mutualism of one non-pollinating fig wasp species
一种非传粉榕小蜂的繁殖策略及其对榕—蜂互利共生系统的影响

Zhenji Wang,Fengping Zhang,Yanqiong Peng,Darong Yang,<br>,张凤萍,彭艳琼,杨大荣
生物多样性 , 2009,
Abstract: 为了解非传粉榕小蜂与榕树—传粉榕小蜂互利共生系统的作用方式和作用强度, 从而揭示它们长期稳定共存的原因, 作者于2008年在西双版纳热带植物园研究了钝叶榕(Ficus curtipes)非传粉榕小蜂Walkerella sp.与榕—蜂互利共生系统的相互关系。我们野外直接观察Walkerella sp.的产卵繁殖行为, 并对Walkerella sp.和传粉榕小蜂进行控制放蜂实验。实验包括4类处理榕果: 传粉榕小蜂单种放蜂果, Walkerella sp.单种放蜂果, Walkerella sp.与传粉榕小蜂混合放蜂果, 自然果。结果表明, Walkerella sp.在榕果外产卵, 并且可以将卵产在多个榕果上。单因素方差分析结果表明: 混合放蜂果和自然果内传粉榕小蜂后代数量差异不大(P = 0.46), 但都显著低于传粉榕小蜂单种放蜂果(P < 0.01); 在传粉榕小蜂单种放蜂果以及混合放蜂果内种子数量不存在显著差异(P = 0.33), 但都显著高于自然果(P < 0.01)。自然果内Walkerella sp.后代数量与传粉榕小蜂数量呈显著的相关关系, 而在混合放蜂果内两者呈低度负相关。Walkerella sp.与种子数量在自然果和混合放蜂果都不存在显著的相关关系。单因素方差分析结果表明, Walk-erella sp.单种放蜂果、混合放蜂果及自然果中Walkerella sp.数量不存在显著差异(P < 0.01)。对自然果内所有种类小蜂的相关分析表明: Walkerella sp.与其他非传粉榕小蜂都不存在显著的相关关系, 这说明不存在寄居或复寄生的非传粉榕小蜂种类控制Walkerella sp.的数量。而Walkerella sp.之所以没有完全利用榕果内的小花资源繁殖后代, 是由于产卵量有限和后代必须依靠传粉榕小蜂雄虫打开苞片口才能离开榕果, 必须给传粉小蜂留下一些繁殖资源。
An analysis on the genesis of debris flow in Taihang Mountains and ecological prevention countermeasure--Taking genesis of debris flow in Hebei Province in 1996 as an example
太行山区泥石流成因及其生态防治对策--以1996年河北省泥石流灾害为例

Wang Zhenliang,Mao Xianghong,Sun Jiding,Zhang JinXiang,Gu Xinqing,<br>,毛向红,,张金香,顾新庆
中国生态农业学报 , 1998,
Abstract: 以1996年河北省泥石流灾害为例,分析了泥石流的主要成因,并提出大力发展生态农业,植树种草,整修水利设施等生态防治对策,是综合防治泥石流危害和发展经济的重要途径。
AN AUTOMATIC TARGET RECOGNITION ALGORITHM FOR AERIAL PHOTO BASED ON NEURAL NETWORK
一个基于神经网络的航空照片自动目标识别算法

Chen Dong,Shen Zhenkang,Li Biao,Liu Wenhua,Wang Weihua,Li Jicheng,<br>陈东,,李飚,刘文华,炜华,
电子与信息学报 , 2001,
Abstract: Due to the complexity of automatic target recognition for aerial photo this paper describes an automatic target recognition algorithm based on neural network. It includes two stages, target detection and false-alarm rejection. The first stage operates on the entire image to detect potential targets quickly. The second stage attempts to reject false target-like objects while retaining as many targets as possible. The experimental results show the algorithm is feasible.
Effects of the ionic liquid 1-methyl-3-octylimidazolium bromide on the feeding intensity of Daphnia magna
一种离子液体——溴化1-辛基—3-甲基咪唑对大型溞摄食强度的影响

LI Xiaoyu,LUO Yanrui,LI Lei,WANG Jianji,SUN Zhenjun,<br>李效宇,罗艳蕊,李磊,,
环境科学学报 , 2008,
Abstract: 用计数法研究了一种离子液体--溴化I-辛基-3-甲基咪唑对大型溞滤水率和摄食率的影响及恢复条件下子代大型溞摄食强度的变化,以初步探讨离子液体对水生生态系统可能的影响.实验结果表明:离子液体显著降低了母代大型溞的滤水率和摄食率,最低浓度(7μg·L-1)处理组二者分别比对照下降了26.5%和20.6%,最高浓度处理组(112μg·L-1)二者下降了84%和80%;子代的滤水率和摄食率也受到抑制,且抑制程度大于母代,在离子液体浓度为112μg·L-1时子代第3胎幼潘滤水率和摄食率的下降比率高达95.5%和94.3%.将母体暴露于不同浓度离子液体的大型溞的子代第1胎和第3胎幼溞转入恢复实验,较低浓度处理组其摄食行为得到一定的恢复,但高浓度处理组仍受到较强的抑制,约比对照下降了80%.因此,离子液体严重影响了大型溞的摄食强度,对水生生态系统安全具有潜在的威胁.
Applying iterative learning to network control
迭代学习在网络控制中的应用*

LI Xing-yi,HUO Zhen-qiang,SHI Hua-ji,WANG Yi,<br>李星毅,,施化,
计算机应用研究 , 2008,
Abstract: With the goal of improving the network resource utilization rate and supplying an impartial resource ditribution quota for source,this paper proposed the solution of iterative learning control algorithm to the network congestion problem by ma-king use of the merits of iterative learning control such as simple structure and independence of accurate system model.Prior to describing the algorithm,it constructed a controlled system for the network congestion by analyzing network model,and then gave the controlled system an open-closed loop PID type iterative learning control algorithm and proved its convergence,finally built a network congestion control model using the algorithm.Experiment and simulation prove that this algorithm takes a good effect in solving the network congestion problem.
塔中隆起碳酸盐岩叠合复合岩溶模式与油气勘探
Superimposed Compound Karst Model and Oil and Gas Exploration of Carbonate in Tazhong Uplift

韩剑发,孙崇浩,,云刚,李浩,陈军<br>Han Jianfa, Sun Chonghao, Wang Zhenyu, Ji Yungang, Li Hao, Chen Jun
地球科学(中国地质大学学报) , 2017, DOI: 10.3799/dqkx.2017.031
Abstract: 塔里木盆地大型碳酸盐岩台地形成与构造演化过程中,发育了台缘礁、台内滩与深层白云岩等巨厚的碳酸盐岩建造,经过多期构造运动形成了种类繁多、规模巨大的岩溶缝洞系统,是台盆区海相碳酸盐岩油气勘探开发的重要领域.基于野外露头与井下地质、岩样分析、地球物理预测及岩溶地质刻画,静态特征与生产动态等多学科动静态一体化研究,阐明了洞穴、溶蚀孔洞、裂缝等储集空间发育特征及大型岩溶缝洞系统的形成机理;创建了与不整合暴露、断裂破碎相关的岩溶叠合复合发育模式;揭示了不整合面相关岩溶横向广泛分布、断层相关岩溶纵向局部拓展及其三维展布规律;提出叠合复合岩溶缝洞系统是油气复式成藏的关键,亦是复式油气聚集区立体勘探开发的基础,叠合复合岩溶模式的建立有效指导了塔中隆起碳酸盐岩凝析气田的重大发现与高效开发.
In the process of large carbonate platform formation and tectonic evolution of Tarim basin, the thick platform margin reef, intra-platform beach and deep dolomite carbonate sediments were developed, which formed the various types and large scale of karst fracturecave systems by the reconstruction of multi period tectonic movement, and the system is an important field of oil and gas exploration and development inside the platform basin transitional area marine carbonate. Based on the multidisciplinary static and dynamic comprehensive analysis of the field outcrop, underground geology, geophysical prediction, karst geological description, static characteristics and production dynamic data, this paper described the characteristics of reservoir space development, such as caves, dissolved pores and fractures as well as the formation mechanism of the large scale karst fracture cave system, and established the superimposed development model of unconformity exposed and fracture karst, and revealed the horizontal distribution of unconformity related karst and the longitudinal distribution and three-dimensional distribution of the fault karst. The comprehensive study shows that the composite karst fracture cave system is the key to oil and gas accumulation, and is also the basis for the exploration and development of the complex oil and gas accumulation area. The establishment of the superimposed compound karst model is an effective way to guide the significant discovery and efficient development of the carbonate condensate gas field in Tazhong uplift area
Overall Construction of Well-to-do Society in China and Modernization of Traditional Chinese Medicine
全面建设小康社会与中医药现代化

Li Zhenji,<br>李
世界科学技术-中医药现代化 , 2003,
Abstract: The objectives of the struggle for the overall construction of a well -to -do society in China, which were fonnulated at the sixteenth congress of the Communist Party of China makes people clear about the historical tasks which should be fulfilled in the first 20 years of the present century. All the workers in the field of traditional Chinese medicine ( TCM) in the country should deeply understand the situation of social development in this historical stage, grasp the trends of muld-disciplinary fusion in the systems of modern science and technology and build up strong national pride and confidence, carrying forward and developing the concept of wholism and the methodology of the traditional Culture of China to form a thinking mode of fusion and reform so as to make creative contributions beyond those of our predecessors in the progress of the great rejuvenations of the Chinese nation and the modernization of TCM. The article analyzes and expounds the system of objectives of the construction of a well-to-do society and the modernization of TCM, and proposes that the contents of the TCM culture should be further promoted and developed in order to push ahead the modernization of TCM and provide the overall construction of a well-to-do society with spiritual motive force and material support in China.
Multi-product complete job-shop scheduling problem and its solution
多产品综合作业调度问题及其求解

WANG Lin-ping,JIA Zhen-yuan,WANG Fu-ji,MENG Fan-bin,<br>林平,,,孟凡斌
系统工程理论与实践 , 2009,
Abstract: 描述了同时考虑加工与装配作业的多产品综合作业调度问题,利用经典作业调度问题FT10的数据构造了一个问题例子,设计了基于产品结构信息的字符串直接解码方法.计算结果表明:设计的遗传算法是可行和有效的,得到的装配完工时间接近无限能力概念下得到的最小值,并且优于关键路径调度规则的结果.
An Infrared Diffractive/Refractive Optical system beyond Normal Temperature
红外折射/衍射超常温光学系统

Sun Qiang,Liu Hongbo,Wang Zhaoqi,Zhang Huijuan,Wang Jizeng,Lu Zhenwu,<br>孙强,刘宏波,肇圻,张惠娟,,
光子学报 , 2003,
Abstract: 设计了折射/衍射混合减热差红外光学系统,仅使用硅和锗两种材料。设计结果表明,此系统具有良好的减热差和校色差作用,在—80—200℃温度范围内不仅得到接近衍射权限的成像质量。而且结构简单,体积小,重量轻。
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