大白口蘑子实体的化学成分研究

目的 研究大白口蘑(Tricholoma giganteum Massee)子实体的化学成分。方法 大白口蘑子实体的乙酸乙酯部位经过硅胶、RP-18、Sephadex LH-20等多种材料进行分离纯化, 通过现代波谱技术进行结构鉴定。结果 分离鉴定了12个化合物,它们分别为：亚油酸甲酯（1）、亚油酸（2）、麦角甾-4, 6, 8 (14), 22-四烯-3-酮（3）、麦角甾-5, 7, 22-三烯-3β-醇（4）、过氧麦角甾醇（5）、麦角甾-7, 22-二烯-3β, 5α, 9α-三羟基-6酮（6）、麦角甾-7, 22-二烯-3β, 5α-二羟基-6酮（7）、麦角甾-7, 22-二烯-3β, 5α, 6α, 9α-四醇（8）、麦角甾-7, 22-二烯-3β, 5α, 6β, 9α-四醇（9）、麦角甾-7, 22-二烯-3β, 5α, 6β-三醇（10）、3β-O-glucopyranosyl-5α, 6β-dihydroxy-ergosta-7,22-diene（11）、脑苷脂D（12）。结论 化合物1-3、6-12均为首次从该种真菌中分离得到。     

China’s Structural Power and the Fate of the BCIM Economic Corridor

ABSTRACT

In 2013, China and India officially established an economic corridor (the Bangladesh–China–India–Myanmar Economic Corridor, BCIM-EC) that would cut across Myanmar and Bangladesh. But while the formal process of cooperation among the four countries is in place, many obstacles to its implementation remain at the international, national and local levels. Is meaningful collaboration possible within the BCIM-EC framework? In terms of two dimensions of structural power as conceptualised by Susan Strange, security and trade, China’s structural power in Myanmar is much stronger than India’s. It is therefore likely that this imbalance will prevent the BCIM-EC project, which currently appears to be overshadowed by China’s Belt and Road Initiative, from having a fruitful outcome.     

An emerging theory of the effect of economic contraction on alcohol abuse in the United States

Recent research in the United States describing the association between adverse economic experiences and the risk of clinically significant alcohol abuse is reviewed. A theory of how economic contraction affects the incidence of alcohol abuse is offered. Implications of the theory for economic policy and the provision of services are discussed.     

农业结构调整的制约因素及应对策略

当前农业结构调整存在着许多制约因素,如缺乏理论指导、缺少产业组织引导、缺少社会资本介入以及各种制度障碍。应积极引进各种社会资本参与农业结构调整,鼓励农业产业组织的发展,并为农业结构调整提供必要的制度支持。     

开放状态下大学生政治价值观结构形态的定位研究

对开放状态下大学生政治价值观结构形态的定位研究,目前有四种有争议的论点:(１)认为是国家大政治、大背景下的结构形态;(２)认为是大学生的政治情感、政治观念、政治行为的表现形态;(３)认为是政治价值观价值结构的工具性、理论性、终极性价值层面的表现形态;(４)认为是大学生政治人格的表现形态。这四种论点,实际上对应着相关的政治教育模式。各种政治教育模式定位,各有其优势和不足。系统、科学地对大学生政治观结构形态进行定位研究成为目前的理论热点和难点。     

试论现代汉语核心句的句义结构类型

作为语法研究的一个有顶组成部分，句义结构的类型研究必须要遵循语形语义相结合的基本原则，本根据区别性语义特征将现代汉语基础表义结构分为属性，方们，领属，识别，感知，自身动作，涉客动作等七小类，并采用谓词逻辑对各小类基础表义结构的内部语义配置式进行描写，指出现代汉语句子的语义成分是一个逐层概括的层级系统，现代汉语核心锯的语义结构有五种基本类型。     

The dynamics of unemployment and imprisonment in England and Wales, 1946–1985

This paper explores the dynamic relationship between unemployment and prison admissions in the English criminal justice system. First, by adopting econometric procedures designed to test between alternative forms of dynamic equilibria, it finds that there has been a steady-state growth rate in prison admissions and that unemployment growth has played an important role in determining that equilibrium. Second, by developing a behavioral model of judicial expectations, it argues that judges have used their expectations as heuristic devices for simplifying sentencing decisions and that the unanticipated changes in unemployment have played a key role in determining changes in sentencing patterns. Due to individualized sentencing practices characteristic of English judges, unemployment plays a much larger role in determining prison sentences than warranted under Anglo-American legal traditions.     

我国当代现实主义对文学创作的兼容与吸收

我国当代现实主义文学审时度势,在自我发展创新的同时,合理而大胆地兼容和吸收了象征主义、黑色幽默、心理现实主义、魔幻现实主义等流派的创作方法和表现特点,极大地丰富和壮大了自己,获得了前所未有的发展.     

关于我国劳动力就业问题的思考

失业作为市场经济的伴生物,存在于所有市场经济国家中。除导致失业的共同因素外,我国的失业又有自身特殊的原因。目前,我国劳动力就业形势严峻,失业现象突出,社会反响很大。应从发展教育事业、调整产业结构、发展知识经济等方面提出解决措施。     

Labor markets and incarceration: The China shock to American punishment

Studies have failed to show a positive effect of unemployment on incarceration despite reasons to expect such a relationship. We note that prior estimates have been muddied by the absence of substate data, a focus on prisons rather than on jails, limited measures of unemployment, and the fact that the health of the labor market is endogenous to incarceration. We instrument for local exposure to the rise of Chinese exports (“the China Shock”) to estimate the effect of job loss on American incarceration. Marshaling a new data set of prisoners and jail inmates by race at the commuting zone level, we show that negative shocks to local labor markets led to significant increases in total incarceration rates for both Blacks and Whites. The effect seems to be driven by increased prison rather than jail populations. This estimate is invisible to ordinary least squares, which may help explain null results reported by past work. Counterfactual exercises suggest that the effect of job loss was punitively consequential. Had employment gains from the 1990s been preserved into the 2000s, the U.S. incarceration rate would have grown significantly less than it did.