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1.Study and describe the Best Practice Rules of the Dutch Corporate Governance Code concerning conflict of InterestBest Practice Rules coIne from the UK corporate governance,which could prevent the worst cases of abuse of rights in company law. 相似文献
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蜜蜂是一种典型的社会性昆虫.在蜂群中,人们看到的是蜂群中工蜂之间相互合作的一面,但大量研究表明:蜂群中工蜂之间在合作时又存在冲突.主要介绍国外有关蜂群中工蜂合作与冲突方面的最新研究进展. 相似文献
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《科技视界》2017,(13)
Forster attaches much importance to the relationship among people in his works.In A Passage to India,the topic of conflict and unity is discussed in depth,including man and man&man and nature.The passage will represent conflict and unity by introduction to the writer and analysis to his work. 相似文献
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我们对软骨症、跛行和生殖道炎症之间相互关系在黑龙江省八五农场某畜牧场做了调查。1材料与方法①从101头3~6胎成年母牛中随机选择其中43头进行血清学检测,然后在此43头牛中选出产后空怀1~6个月的15头牛进行尿检。②取混合料1~1.5千克(农大营养实验室测钙磷值)。③静脉穿刺采集全血7~10毫升,贮存于试管中,自然凝固,析出血清,盛于青霉素瓶中备用。④尿液:采集每日的晨尿4~5毫升(未吃草料)于无菌瓶中,待检。标准试剂盒:钙试剂盒、磷试剂盒、尿素氮试剂盒、甘油三脂试剂盒(北京中生生物工程高技术公… 相似文献
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公鸡斗架是常见的一种动物争斗行为,作者通过对公鸡斗架行为的根源、方式和结局的分析,说明公鸡斗架行为是由基因控制的,是自然选择的结果,斗架的本质是繁殖斗争,目的是取得与更多异性交配的机会,留下更多的后代.公鸡斗架的节制性符合进化稳定性策略,在进化上具有重要意义. 相似文献
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公鸡斗架是常见的一种动物争斗行为,作者通过对公鸡斗架行为的根源、方式和结局的分析,说明公鸡斗架行为是由基因控制的,是自然选择的结果,斗架的本质是繁殖斗争,目的是取得与更多异性交配的机会,留下更多的后代。公鸡斗架的节制性符合进化稳定性策略,在进化上具有重要意义。 相似文献
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Jun Wang Peter Damerell Kun Shi Philip Riordan Kebiao Zhu Xiaohu Wang Peng Wang Aishanjiang Reheman Jianwei Yang 《Strength and Conditioning Journal》2019,72(1):210-216
Predation of livestock by wildlife and the retribution responses it elicits can have strong negative impacts on both people and carnivores. A questionnaire survey designed to investigate human-carnivore conflicts was completed by 66 herders from local communities within Taxkorgan Nature Reserve, located in the Pamir and Karkorum mountains of Northwestern China. A total of 127 livestock predation events with associated predator identification were reported and 583 livestock were killed. Wolves (315 livestock) and dholes (129 livestock) were responsible for the largest number of livestock losses. Livestock depredation significantly differed between guarded and unguarded management strategies. Positive relationships between loss and the total amount of the major livestock species, as well as the total loss and total amount of livestock, were detected. Use of guard dogs did not affect the likelihood of carnivore attacks, whereas keeping livestock in pens at night or all day did reduce the number of depredation events. Depredation showed significant seasonal variation (month of occurrence) for large carnivores. Numbers of goat, sheep, and cattle predated also varied by month, but did not for yak because of different husbandry practices. No compensation policy has yet been established in this area, but if it were to be developed in the future, 83% of interviewed herders would require compensation in cash, whereas 14% of herders would prefer replacement livestock. Our study offers suggestions to mitigate livestock depredation in this region of China. To prevent livestock depredations, local herders should mainly prevent wolves and dholes because they cause most livestock killings, and employ guarded grazing practice. Managers could make herders keep a reasonable number of livestock to raise grazing efficiency, introduce suitable sheepdog breeds, and provide essential dog training as useful aids to herders to increase livestock-guarding effectiveness. 相似文献
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陶莉 《国外畜牧学(猪与禽)》2013,33(5)
鉴于由PCV2引起感染的高流行性,以及它可出现在健康和患病的猪中,针对这种病原体的血清学试验作为疾病的诊断性试验已受到质疑.众所周知,圆环病毒的诊断必须以Sorden标准为依据.然而,这些试验的重要性建立在试验类型、试验有效性、我们希望使用这种方法的情况或条件以及它们的目标基础上.由于间接免疫荧光法(Indirect Immunofluorescence,IFA)试验在我们的环境中没有得到使用,免疫过氧化物酶单层试验(Immunoperoxidase Monolayer,IPMA)出于其操作麻烦和可利用性有限,实际上局限于科学领域的应用.本文我们将不对它们进行讨论.我们只是说,对于一些专家来说,后者将是参考试验,免疫酶测定法或ELISA试验将进行评估. 相似文献