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Search Results: 1 - 10 of 318903 matches for " 王刚 "
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中国海洋药物发展的几点思考
The Thinking of Development of Chinese Marine Medicine
 [PDF]


Pharmacy Information (PI) , 2013, DOI: 10.12677/PI.2013.22003
Abstract:
本文提出了目前我国在海洋药物发展中出现的问题及对策,并对我国海洋药物研究作了展望。
This paper comes up with the problems and countermeasures on the development of Chinese marine medi-cine currently, and prospects the research of our marine medicine.
以IR及UV法监测阿法骨化醇合成反应进程
A Method for Monitoring the Process of Synthetic Reaction of Alfacalcidol by IR and UV
 [PDF]

,
Hans Journal of Medicinal Chemistry (HJMCe) , 2013, DOI: 10.12677/HJMCe.2013.12003
Abstract:

目的:成阿法骨化醇,准确监测反应进程并判定反应终点。方法:IRUV法监测阿法骨化醇合成反应进程。结果:IRUV法能准确有效的监测阿法骨化醇合成反应进程,避免了反应不完全或过度反应导致副产物增加的弊端,提高了反应收率,且重现性好,收率稳定。结论:本方法操作简单、迅速、准确、有效,适合于工业化生产。
Objective: This paper is about synthetizing alfacalcidol, monitoring the reaction process and determining the end of the reaction. Method: Monitoring the process of the synthetic reaction of alfacalcidol by IR and UV. Results: This is an effective method to monitor the synthesis process and avoid the incomplete reaction or the overreaction, which can lead to the increase of the side product. Furthermore, the method increases the yield of the reaction and improves the good reproducibility. The yield is stable. Conclusion: The method is easy, rapid and accurate. It is suitable for the pharmaceutical manufacture.

关于资金价格双轨制并轨思路的研究
A Study on the Merger of Dual-Track of Capital Price
 [PDF]

李正,
Finance (FIN) , 2012, DOI: 10.12677/FIN.2012.24019
Abstract: 管制利率在反应资金价格方面存在失真,不能正确反应资金市场上供求双方的力量。近年来,虽然随着利率市场化改革的不断深化,我国在货币市场上已经基本实现了利率的市场化,但我国的存贷款利率仍然是管制利率,即我国的利率体系呈现出价格“双轨”并行的现象。作者认为,利率市场化不仅要体现在货币市场的利率上,也要表现在存贷款利率上。因此资金价格“双轨”并轨是我国的必然选择。
Control rates can not correctly reflect the price of capital and the strength of the market supply and demand sides. In recent years, with the interest rate market reform continued to deepen, China’s money market interest has been largely achieved on the market, but China’s deposit and lending rates are still controlled interest, so interest rate system in China showing a price on the “dual track” parallel phenomenon. Authors believe that the interest rate market not only reflected in the money market interest rates, but also reflected in the deposit and lending interest rates. Therefore, the merger of Dual-Track of capital price is an inevitable choice in China.
同塔双回输电线路接地故障点定位方法研究
A Fault Location Study on Double-Circuit Transmission Lines on the Same Tower
 [PDF]

, 贾立敬
Transmission and Distribution Engineering and Technology (TDET) , 2013, DOI: 10.12677/TDET.2013.22005
Abstract: 同塔双回输电线路是解决输电线路架设占用土地、跨越民房等引起的与城镇规划建设、居民生活之间的矛盾的有效方法,可是,一旦发生故障,如何更加精确的定位故障位置是其主要的突出问题。本文正是基于此,并考虑同塔双回输电线路的磁偶对所测数据的影响,介绍了一种不受磁偶影响就可以对故障点进行精确定位的方法,即基于S变换利用故障相电流信号的能量与对应的电压平均值来对同塔双回输电线路故障进行检测与定位的方法。并以A相接地故障为例进行了研究和分析,最后通过应用PSCAD软件进行建模和仿真,进一步验证了该方法的有效性,也为后续研究同塔多回输电线路的故障奠定了基础。
Double circuit transmission lines on the same tower is the effective method to solve the occupied land which was erected by the transmission lines, across houses and so on, which caused the contradiction between the urban planning and construction and the lives of the residents. However, in the event of a failure, the main outstanding issue is how to locate the fault more accurately in the case of the effect of the same tower double circuit transmission lines of magnetic coupling on the measured data. The principle of the method is based on S transformation to utilize the energy of the fault phase current signal and the corresponding average voltage to detect and locate the fault of the same tower transmission line. A phase to earth fault as an example is researched in this paper and then the modeling and simulation through the application PSCAD is conducted. Further, the effectiveness of the proposed method is verified, meanwhile, it will lay a foundation for researching on the more towers of transmission line fault.
离子学

现代物理知识 , 2000,
Abstract: 读者对“电子学”已经很熟悉了,但对“离子学”却可能很陌生.事实上,离子学是近年来发展起来的一门极具生命力的多学科交叉的前沿学科,它是物理学、化学、材料科学、工程学、冶金学、生物学等多种学科交叉汇合而出现的新学科生长点. 能够传导电流的物质称为导体.通常,人们习惯用电导率(a,( ·cm)-1)来表征导体传导电流的本领,并可表示为 U= 1/R· l/s式中R为导体的电阻( ),l为导体长度(cm),s为导体的横截面积(cm2).粗略地讲,电导率愈大的导体,其导电能力愈强. 根据导电机理的不同,通常可…
植物群落中生态位重迭的计测

植物生态学报 植物生态学报 , 1984,
Abstract: ?本文阐明了生态位重迭在植物生态学研究中的重要性。指出植物群落中生态位重迭的计测有不同于动物的特殊性,并建议以群落梯度代替生态因子梯度;以生态距离间隔作为生态位重迭计测公式中的加权因子,使生态位重迭的计测简化。以甘肃省马衔山林区的林下草本植物为例,计测各种对间的生态位重迭。计测分两种情况进行:其一,在光照、土壤水分、土壤有机质三维复合生态因子梯度上;其二,在群落梯度上。二者所得结果,进行了比较分析。最后在讨论中指出:计测生态位重迭时,必须区分部分重迭与完全重迭,区分样方和资源位。
井巷工程牛鼻子交岔点顶高、帮宽及弧形开挖的控制

煤炭工程 , 2012,
Abstract: 交岔点尤其是牛鼻子交岔点施工一直是井巷工程施工的一个技术难题,它要求进度快、质量好、成型美观,本文以常用的简易牛鼻子交岔点为例建立数学模型,对牛鼻子交岔点施工成型控制方法进行优化,使新的方法满足牛鼻子交岔点弧形控制和连续渐变的要求,同时简化数据,便于现场人员掌握,经过实践得出,该方法值得在各交岔点的施工中应用推广。
基于超效率DEA模型和Malmquist生产率指数的湖北省科技投入产出效率分析及对策研究

科技进步与对策 , 2015, DOI: 10.6049/kjjbydc.2014110732
Abstract: 对湖北省2001-2013年科技投入产出效率进行纵向比较,并与同一时期中部其它5个省份进行横向比较,分析造成湖北科技投入产出效率低下的原因,提出优化湖北科技投入产出效率的政策建议。科技投入产出DEAMalmquist
营救者的损害与自我答责原则

法学研究 , 2010,
Abstract: 当营救者明知存在风险,但仍然对由行为人所威胁到的他人法益进行救援,并因此导致自身法益遭受损害时,并非一律自负其责。倘若营救者是基于法定救助义务,或者是在没有更佳选择的情境中为了保护相比自身危险更为重大的利益,抑或是为了挽救自己近亲属的生命、身体或重大人身自由法益而不得已施行救援行为,就不应对由此导致的自身法益损害承担责任。在其他情形下则应当肯定营救者自我决定地负担了风险,适用自我答责原则,因而不能就营救者自身的法益损害结果追究行为人的刑事责任。
一种基于眼动轨迹的语义提取方法研究

重庆师范大学学报(自然科学版) , 2013, DOI: 10.11721/cqnuj20130116
Abstract: 利用眼动轨迹包含的参数来预测顾客是否喜欢某些商品,对于电子商务的推荐系统具有重要意义。通过采集顾客观察某物品的眼动参数,借鉴Find?s算法概念学习的思想,提出眼动轨迹语义提取算法,该算法首先学习先验知识,然后通过让样例正反例距离最大实现确定眼动参数包括注视时间、瞳孔大小、眨眼次数以及回视次数的权重,利用SEBET(Semanticextractionbasedeyetracking)算法,通过di=SX(∑()KF(∑(m′=k1,i′=k2,i=λm′=1,i′=1,i=0)(xNm′(i)-xoi′(i))2w(i)KF)k1×k2SX)计算样例正反例之间的距离,依照距离的远近来判断顾客是否喜欢某商品,从而实现从眼动轨迹进行语义提取。实验中,记录被试观察水果图片的眼动参数,分析出被试的喜好,与被试实际喜好进行了比较,发现样本与正例的距离为0.91,与反例的距离为3.01,与实际情况相符。
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