胎盘食用的研究进展     

刘敏 《安徽农业科学》2016,(3)

近年来食用胎盘的做法广泛流行于国内外,该研究综述了国际科学界对动物食胎盘行为的原因和生物学意义的研究进展,总结了人类食胎盘在补充营养、缓解产后抑郁症、提高泌乳量等疗效上的争议以及对食用胎盘危害的推测,并对胎盘食用的研究方向进行了展望。  相似文献   

“中国近现代史纲要”含义辨析     

王慧 《湖南农机》2011,38(9):191-193

“中国近现代史纲要”是中宣部、教育部“05”方案中确定的我国普通高校思想政治理论课中的四门必修课之一.从字面意义来理解“中国近现代史纲要”,我们要弄清两个概念,一是什么是“中国近现代史”,二是什么是“纲要”,弄清了这两个问题,我们就可以给中国近现代史纲要下一个完整的定义.  相似文献   

Incentive Mechanism for Team Cooperation Based on Implicit Side Contract     

WEI Guang-xing  PU Yong-jian  QIN Yan-hong 《保鲜与加工》2006,(12):136-140

Aiming at the free-riding problem in team incentive, this paper designs a dynamic incentive mechanism based on implicit side contract with dynamic game theory by introducing the reasonable assumption that there is horizontal monitor in team production. The theoretic analysis indicates that the dynamic incentive mechanism, in which a strict group incentive compatibility contract is taken at the first stage and an individual incentive compatibility contract is taken at the second stage, can implement team cooperation uniquely in the general condition of risk aversion and stochastic production by only two stage repeated game.  相似文献   

A NEW APPROACH OF OPTIMIZATION     

Li Zemin 《保鲜与加工》1990,(1)

In this paper, a necessary optimality condition of problems with equality constraints is investigated by the implicit function theorem in n-dimensional Euclidean space. A new approach solving these problems is obtained. The number of dimensions of corresponding system of equations is less than the classic Lagrangian multiplier method.  相似文献   

论我国肉羊生产的前景及意义     

丘富荣 《湖南农机》2007,(5):108-108,110

虽然我们的羊肉在质量等到方面与国外有一定的差距,但也有我们自身的优势。生产成本、价格、劳动力资源等从地缘、竞争对手、进口国、出口价格等考虑,均有竞争优势,发展前景很好。  相似文献   

新形势下高校艺术教育的问题与对策   总被引：1，自引：1，他引：0  

刘振东  杨晓辉 《河北农业大学学报(农林教育版)》2006,8(2):24-26,29

现代高等教育在社会发展的巨大需求中与时俱进,在体制、理念、规格、要求、目标、途径等多方面进行着变革与创新。艺术教育就是在这种变化中日益受到大家的重视,成为高校教育的新热点,但是仍然在重视程度、教育目标、教学方法和师资队伍等方面存在着问题和不足。为此需要提高对艺术教育地位和作用的认识,科学整合教学资源,充分利用现代化教学手段,开展“对话式”教育,加强师资队伍建设,使艺术教育卓有成效。  相似文献   

农业机械技术的创新与培训对策     

李新梅 《北京农业》2012,(21):196

农业机械化是农业生产向着现代化发展的重要标准,农业机械技术的不断更新换代意味着农业科技的不断发展和农业生产水平的不断提高.分析了农业机械技术创新的必要性,并结合河南省新野县农机培训现状提出了改进农业机械培训的对策.  相似文献   

修辞与语用词义的生成     

张廷远 《信阳农业高等专科学校学报》2008,18(3):94-95

修辞是语用词义生成的途径之一,两者有共同的思维、心理基础,词义通过修辞手法在语境中获得修辞变体,词义的修辞变体可以在原词义基础上发生临时变化而形成语用词义。修辞联想指以各种修辞手法的运用作为引申理据的语用词义引申方式,包括比喻联想、借代联想、双关联想、反语联想、比拟联系和象征联想等。  相似文献   

英语双及物结构的构式语法观     

李芸 《信阳农业高等专科学校学报》2013,(3):86-88

构式语法是以认知语言学为理论背景的语言研究方法。本文以Goldberg所倡导的构式语法理论为指导，对双及物结构予以剖析，旨在探究双及物结构这一特定构式的句法和语义特征，同时构建出双及物结构的构式表征模式，以揭示该构式的本质。  相似文献   

Traders' preference for goat characteristics in selected markets of Pangasinan, Philippines     

Maria Excelsis M. ORDEN  Wilfred E. JAMANDRE  Ernesto O. BROWN  Edgar A. ORDEN  Emilio M. CRUZ  Ana Marie P. ALO  Edwin C. VILLAR 《Animal Science Journal》2005,76(2):179-185

Preference for goat characteristics was determined from 42 traders in six markets in Pangasinan, an important trading center for goats in Luzon, the Philippines, and analyzed using a hedonic price model to determine whether these characteristics are important price determinants of goats. This information is important to goat raisers to respond to the needs of the local market, and thus to achieve a better price and higher income in goat raising. Meatiness, size, breed, sex and age (in descending order) were the dominant goat characteristics preferred by traders. Meatiness had the largest positive influence on price, with a price premium of US$6.24 (US$1.00 = PhP 53), whereas the age of the animal had the smallest influence at US$3.72. However, size and meatiness are manifestations of good breeds. Therefore, continued efforts to improve breeds in order to produce good quality goats are imperative to cater to market needs. Different characteristics implied different price premiums. Traders offered a higher price premium for better goat characteristics; thus, the improvement of these characteristics could result in higher returns for goat raisers.  相似文献