关于线性增长条件的几点注记

线性增长条件是各类方程解存在唯一性定理中的基本条件之一。对线性增长条件与其它一些条件的强弱关系进行较为详细的讨论与梳理。     

边疆地区高校大学生心理状况分析——以文山师专为例

采用问卷法、访谈法对文山师专大学生心态进行调查分析，调查内容包括大学生入学适应、人际关系、择业心理、贫困生心理等。调查结果表明我校学生整体心态良好，存在的心理问题主要是发展中的问题。应从入学适应教育、贫困生心理辅导与贫困生资助工作、职业生涯规划教育、自我目标意向培养教育等方面构建边疆民族地区高校学生管理的有效模式。     

Noether整环上不同项序下的复合Groebner基

复合是指将多项式的每一个变元用新的多项式替换.对于Noether整环上的多项式环上某个项序下的Groeb-ner基,利用S-多项式及合冲条件,证明了当复合是另一项序下的一组首幂积为幂置换的首1多项式时,Groebner基的计算与复合可以交换.     

实时主动数据库系统中复杂触发器条件的评价

给出了复杂条件的结构及其表达式的形式描述，并利用状态自动机的原理进行相应的初步处理．在此基础上提出了条件评价优先级及评价路径的概念与相关算法，开发了一种基于条件评价优先级的路径选优法，以实现复杂条件评价的有效性和及时性．     

聚醋酸乙烯缩醛乳液实验条件探讨

将聚乙烯醇（ＰＶＡ）溶于水中，加入非离子型表面活性剂，以（ＮＨ４）２Ｓ２Ｏ８为引发剂，先进行醋酸乙烯（ＶＡＣ）的乳液聚合。然后在一定条件下，加入甲醛进行缩聚反应，最后加入填料和增塑剂，得到产品。本实验条件较之聚醋酸乙烯实验条件易控制，产品粘接能力强，在工业生产中具有实用价值。本文主要讨论实验条件的选择     

非光滑方程信赖域算法的全局收敛性(英)

给出一个解非光滑方程的信赖域算法，提出弱正则SPN分解和弱正则条件数的定义．在弱正则条件下，证明此算法的全局收敛性．     

复变函数共轭可微的又一充要条件及应用

给出了复形式的复变函数的共轭可微性充要条件的证明及其重要应用.     

Covalent binding of aflatoxin B1 to liver DNA in rats pretreated with ethanol

Summary Male Fischer F-344 rats were given ethanol in the drinking water and/or by single oral administration. Following this, the animals received p.o. 100 ng/kg of the hepatocarcinogen [³H]aflatoxin B₁ (AFB₁). 24 h later, the level of DNA-bound AFB₁ was determined in the liver and was found not to be affected by any type of ethanol pretreatment. A cocarcinogenic effect of ethanol in the liver is therefore unlikely to be due to an effect on the metabolic activation and inactivation processes governing the formation of DNA-binding AFB₁ metabolites.To whom correspondence should be addressed.Acknowledgment. We thank the European Science Foundation for the Toxicology Research Fellowship awarded to M.M.     

Functions of fatty acid binding proteins

Summary Cytosolic fatty acid binding proteins (FABP) belong to a gene family of which eight members have been conclusively identified. These 14–15 kDa proteins are abundantly expressed in a highly tissue-specific manner. Although the functions of the cytosolic FABP are not clearly established, they appear to enhance the transfer of long-chain fatty acids between artificial and native lipid membranes, and also to have a stimulatory effect on a number of enzymes of fatty acid metabolism in vitro. These findings, as well as the tissue expression, ligand binding properties, ontogeny and regulation of these proteins provide a considerable body of indirect evidence supporting a broad role for the FABP in the intracellular transport and metabolism of long-chain fatty acids. The available data also support the existence of structure- and tissue-specific specialization of function among different members of the FABP gene family. Moreover, FABP may also have a possible role in the modulation of cell growth and proliferation, possibly by virtue of their affinity for ligands such as prostaglandins, leukotrienes and fatty acids, which are known to influence cell growth activity. FABP structurally unrelated to the cytosolic gene family have also been identified in the plasma membranes of several tissues (FABP_pm). These proteins have not been fully characterized to date, but strong evidence suggests that they function in the transport of long-chain fatty acids across the plasma membrane.     

弗罗斯特诗之浅见

通过分析弗罗斯特的两首名作，《摘罢苹果》和《雪夜林边驻马》，逐渐揭开它们迷人面纱之下潜藏的低调的悲哀，分析现代人的生活状态和他们面对人生的不尽如人意时所能选择的人生道路。