赶黄草挥发油化学成分的气相色谱—质谱分析

目的 研究赶黄草(Penthorumchinese Pursh.)挥发油的化学成分。方法 用赶黄草全草经水蒸气蒸馏所得的挥发性成分,用气相色谱-质谱进行分离鉴定,结合计算机检索技术,对分离的化合物进行分析和结构鉴定,应用色谱峰面积归一法测定各组分的相对百分含量。结果 水蒸气蒸馏的得油率为0.30％;共分离出28个组分,鉴定了其中的26个组分,占挥发油总量的95％。结论 首次报道了赶黄草挥发油的化学成分主要为酮和酯类化合物,含量较多的是棕榈酸乙酯(18.64％),反式-6,10-二甲基-5,9-十一烷双烯-2-酮(14.95％),(反,反)-6,10,14-三甲基-5,9,13-十五烷三烯-2-酮(10.42％),棕榈酸(9.60％),(顺,顺,顺)-9,12,15-十八烷三烯-1-醇(7.40％)等。     

中国与南海邻国共同开发南海油气资源的困境与突围

南海问题是我国当前面临的重要海洋划界问题,由于地理、政治、经济以及法律等多方面的原因,中国与南海各邻国至今未能妥善解决南海划界问题。《联合国海洋法公约》要求各国在海洋划界前尽一切努力作出实际性的临时安排,而共同开发作为临时安排在南海实施共同开发油气资源时同样陷入多重困境。文章对目前共同开发南海油气资源所面临的困局及其原因进行分析,在此基础上探讨如何破解目前面临的困境,对我国解决南海问题具有重要的理论价值与实践意义。     

"气"之审美视域——中国古典美学范畴研究

"气"是在西周初期就产生的一个非常重要的哲学观念,也是中国古典美学中一个独特的理论范畴."气"以其自身独具的内涵和命意昭示了中国美学的生命精神及其生发赓续、蓬勃旺盛的创造力量.在中国美学和艺术理论中,正由于"气"范畴的产生和发展,才形成中国美学和艺术特有的价值追求和思维方式,才形成一系列与之相关的重要概念和范畴,成为我们认识和理解中国美学精神的途径,也是建构适合我们今天时代的美学和艺术理论的一份重要的文化资源.     

知识共享和知识创新对组织绩效影响的路径分析

在知识经济时代,知识已成为现代企业进行技术创新、提升组织绩效和保持企业活力的法宝,企业需要对知识进行有效的管理。本文利用结构方程模型对知识共享和知识创新与组织绩效之间的关系进行了研究,对知识共享、知识创新对组织绩效的影响路径进行了深入的分析。     

餐饮业顾客满意度指数模型的实证研究——基于大学饮食服务中心的实地调研

全国性的顾客满意度指数测评工作已经获得各国普遍的关注,本文基于ACSI和中国服务业顾客满意度模型构建了我国餐饮行业顾客满意度概念模型,并根据湖北宜昌市多所大学饮食服务中心的问卷调查数据进行了结构方程模型分析、检验,修正初始概念模型,得到了有效的餐饮业顾客满意度概念模型,进而在分析餐饮管理与服务现存问题的基础上,提出了改进的措施,为创造良好的餐饮业管理质量提供建议.     

龙女寺构造须家河组天然气成藏主控因素

龙女寺构造须家河组天然气藏为较典型的岩性油气藏,其圈闭闭合高度低、储层致密、气水分布关系复杂。分析了须家河组气藏的烃源岩、储集岩、盖层和圈闭条件,认为其成藏条件优越;利用磷灰石裂变径迹技术和Easy%Ro化学动力学模拟技术重建了烃源岩的生烃演化史,结合构造演化再现了须家河组气藏的充注过程,将其分为3 个成藏阶段,中侏罗世末期的油气初次充注期,白垩纪末的大规模充注期和喜马拉雅期的气藏改造和重新定位阶段。指出了须家河组岩性气藏成藏的主控因素：优质烃源岩的发育是物质基础,古今构造均处于油气运移的有利指向区,储集物性和圈闭闭合高度控制了气水的分布,局部裂缝发育带则是成藏及高产的关键因素。     

火烧油层注气加热过程的模拟计算研究

在火烧油层的注气加热过程中,需要根据点火需求优化注气参数。考虑了空气在井筒、油层的流动及换热过程,包括空气进入油层的混合过程、水蒸发进入空气和湿空气降温后凝结为水的组分及相态变化、油层之间的导热过程,建立了相应的瞬态模型,提出了基于龙格库塔法的求解方法。利用该模型及求解方法进行了模拟注气验证,并用于油田的实际火烧油层点火过程的监测系统。研究表明：点火过程中加热带扩展速度非常有限（6 d 后加热带半径仍小于0.6 m）,并且受油层中含水率影响较大,加热带温度主要受电加热器功率和注气速度影响,受注气时间长短影响较小。点火过程中应保持电加热器功率和注气速度稳定。     

Do I look Jewish in this? A phenomenological approach to intercorporeality and racism

Racialised interactions inform the corporeal memory of both racists and their victims. This translates in bodily styles which reproduce alienated intercorporeal exchanges. The racial abjection of the victims is embedded at the somatic level in a racialised corporeal schema which obtains even when victims are not a priori visibly different to an external observer. The damaging intercorporeal dynamics of racialised abjection resist critical deconstruction. This explains the unwitting reproduction of racism even by those who consciously repudiate it and the difficulties of explaining to non-victims the enduring – and damaging- effects of those crucial moments when ‘the glance of the other brings about a break in embodiment’.     

The Interrelationship Between Program Development Capacity and Readiness for Change Among Small to Mid-Sized Nonprofits

ABSTRACT

Based on survey data from 396 small to mid-sized nonprofit organizations operating within Southeast lower Michigan, this article examines the relationship between program development capacity and readiness for change and the predictors of these two components of capacity building among small to mid-sized nonprofits. It uses a simultaneous equation approach as the basis for examining the relationship between program development capacity and readiness for change. The findings indicate that program development capacity and readiness for change are mutually enforcing processes and that the levels of program development capacity and readiness for change are predicted by two distinct sets of predictors.     

Causal Modeling Predicting Psychological Adjustment of Korean-Born Adolescent Adoptees

Summary

Self-concept theory and ethnic identity theory imply causal relations among positive parent-child relationship, ethnic pride, and psychological adjustment of children who were intercountry adopted. This study used linear measurement and structural equation models to test the plausibility of the causal model dealing with the relations among indexes of parent's support of ethnic background, positive parent-child relationship, collective self-esteem, and psychological adjustment in a sample of 241 Korean-born adolescent adoptees. Consistent with the expectations of the self-concept theory and the ethnic identity development theory, the findings show that a more positive parent-child relationship, in which the parents support their children's ethnic identity development and share ethnic socialization experiences, predicts better psychological adjustment of the adopted children. Policy and practice implications of the findings are discussed.