蕲艾油对尿酸的增溶作用

通过紫外光谱和高效液相色谱研究了蕲艾油对尿酸的增溶作用，探讨了蕲艾油治疗痛风病的作用机制。实验结果表明：在人体正常体温37℃下，蕲艾油可使尿酸溶解度提高1倍左右，且随着蕲艾油浓度增大尿酸的溶解度增大。     

Genetic study on the behavior of honeybees influenced by polyandry system

Within a honeybee population, due to polyandry, there are supersister and halfsister relations, thus many subfamilies exist. For the Chinese honeybee (Apis cerana cerana F.) a phylogenetic dendrogram has been constructed in which 4 subfamilies are clustered based on DNA fingerprint patterns. And it has been observed that each kind of workers is distributed to several dierent sub-families.     

用无波函数微扰论和Padè近似方法计算双原子分子振动能级

本文不仅利用无波函数微扰论推导出了双原子分子的非谐振动能级的理论公式，而且还利用双变量 Ｐａｄè近似对 Ｈ Ｃｌ３５ 分子的振动能级做了具体的数值计算，通过选取适当的势参数，理论计算值和实验结果符合得很好     

基于ArcIMS的森林资源信息发布系统的研建

本文介绍了ArcIMS的体系结构、特点及技术优势。构建了基于ArcIMS的森林资源信息发布系统,提出了系统设计的思想、功能、特点及实现的方法。     

硬盘数据存储格式与系统区域的备份

该文详细描述了计算机硬盘数据存储格式，并提供了实用的系统区域的备份及恢复的程序。     

大学英语四级复合式听写策略

作为对考生英语综合运用能力的测试，复合式听写是大学英语四级考试中的一个重要组成部分。通过分析考生在完成复合式听写时的困难，探讨提高学生复合式听写能力的一些策略，帮助考生提高听写能力和培养他们的语言综合运用能力。     

Neurotrophic regulation of synapse development and plasticity

Neurotrophic factors are traditionally thought to be secretory proteins that regulate long-tern survival and differe, ntiation of neurons. Recent studies have revealed a previously unexpected role for these factors in synaptie de velopment ami plasticity in diverse neuronal populations. Here we review experimeuts carried oul in our own laboratory in the last few years.. We have made two important discoveries.First,we were among the first to report that brain-derived. neurotrophie faclor (BDNF) facilitates hippocampal hmg-term potentiation (LTP), a form of synaptic plaslicity believed to be involved in learning and memory. BDNF modulates LTP al CAI synapses by enhaneing synaptic responses to high frequency, tetanic slimulalion. This is achieved primafily by facilitating synaptie vesicle doeking, possibly due to an in crease in the levels of the vesicle prolein synaptobrevin and synaptoplysin in the nerve terminals. Gene knockout study demonstrates thai the effects of BDNF are primarily mediated through presynaptic mechanisms. Second, we demonstrated a form of long-term, neurotrophin-mediated synaptic regulation. We showed that long-term treatment of the neuromuscu lar synapses with neurotrophin-3 (NT3) resulted in an enhancement of both spontaneous and evoked synaptic currcuts, as well as profound changes in thc number of synaptic varicosities and syuaptic vesicle proteins in motoneurons, all of which are indicative of more mature synapses. Our current work addresses the following issues:(i) activity-dependent trafficking of neurotrophin receptors, and its role in synapse-specific modulation; (ii) signal transduction mechanisms medialing the acute enhancement of synaplic transmission by neurotrophins; (iii) acute and long-tenn synaptie actions of the GDNF family; (iv) role of BDNF in late-phase LTP and in the development of hippocampal circuit.     

L—Fuzzy单位区间与L—Fuzzy实直线的连通性

本文主要讨论L-Fuzzy 单位区间I(L)和L-Fuzzy 实直线R(L)的连通性、证明了L-Fuzzy 单位区间I(L)和L-Fruzzy 实直线R(L)是连通的.     

含铌钛钢X—52连铸坯的高温延塑性

测试了溶点－７００℃温度区间含铌钛钢Ｘ－５２连铸坯的高温延塑性。根据断口形貌、组织以及钢中析出物等的变化情况分析了该钢的脆化机理。结果表明：在熔点－７００℃温度区间，Ｘ－５２钢存在２个脆性区，熔点－１３８０℃的第Ⅰ脆性区，９２５－８２５℃的第Ⅲ脆性区。细小的ＮｂＣＮ沿奥氏体晶界的动态析出是造成第Ⅲ区脆化的主要原因。可通过向钢中添加少量的钛，以降低晶界处细小的ＮｂＣＮ的析出量，防止先共析铁素体在奥氏