组态d~N在D_(3h)对称场中稳定化能的推求方法

介绍一种推求组态 d N在 D3h对称场中稳定化能的方法 ,它是根据配体场势的可合性和可分性以及立体构型的可合性和可分性两条原则 ,利用简单的代数运算方法 ,由常见对称场中各 d轨道的相对能量算得 D3h对称性的 ML3和 ML5构型配合物中各 d轨道相对能量 ,尔后求出组态 d N在 D3h对称场中的稳定化能。     

Banach空间中一类（η,θ,δ）-伪单调映象变分不等式解的存在性研究

在Banach空间中,研究了一类非线性变分不等式问题,在一定条件下利用KKM技巧建立了相应的变分不等式解的存在性定理。     

超声-回弹综合法检测混凝土强度的研究

介绍了超声回弹综合法测混凝土抗压强度的研究方法，分析了超声回弹综合法测强度与混凝土抗压强度之间的关系。并就含水率、钢筋含量等因素对超声回弹综合法强度的影响进行了分析。     

佛坪地区印支期花岗岩的成因

通过地质、岩石学及地球化学研究,认为秦岭造山带佛坪地区印支期花岗岩是基性岩浆和酸性岩浆混合的产物,属岩浆混合型(H型)花岗岩;佛坪地区在秦岭主造山过程中曾发生强烈的壳慢相互作用,是一个深层岩浆活动中心。     

单晶Ni(Pyrazole)_4X_2(X=C1,Br)的光谱研究

本文利用d8（D2h*）全组态强场近似理论，对单晶Ni（pyrazole）4X2（X=C1，Br）型化合物的光谱进行了理论计算，计算结果与实验符合较好。     

对h认识的深化——h是微观世界的量度

本文阐述量子物理发展的过程贯穿着h作用,最后以1961年B·Dearer等非常著名的磁通量子跃迁的实验,清楚地给出h是微观世界不连续性最小的量度。对深入理解、系统掌握量理论提供了一条途迳。     

Bacterial phytotoxins: Mechanisms of action

Many species of phytopathogenic procaryotes produce toxins that appear to function in disease development. The affect the plant in different ways, the end result of which is the elicitation of chlorosis, necrosis, watersoaking, growth abnormalities or wilting. The most extensively studied toxins cause chlorosis. They specifically inhibit diverse enzymes, all critical to the plant cell. This inhibition results in a complex series of metabolic dysfunctions ultimately resulting in symptom expression. Substances causing growth abnormalities consist of known phytohormones and other compounds with plant hormone-like activities, but which have no structural relationship to the known hormones. The former act in the usual manner but, because of their elevated levels and imbalances, the host's regulatory mechanisms are overwhelmed and abnormal growth results (hyperplasia, shoot or root formation); the mechanisms of action of the latter group are unknown. High molecular weight, carbohydrate-containing substances, also acting in unknown ways, cause tissue watersoaking or wilting. Likewise, we know little about toxins causing necrosis except for syringomycin which affects ion transport across the plasmalemma.     

Kelletinin I and kelletinin A from the marine molluscBuccinulum corneum are inhibitors of eukaryotic DNA polymeraseα

Summary The inhibitory effect of esters of p-hydroxybenzoic acid (kelletinins I and A), extracted from the marine gastropodBuccinulum corneum, have been tested on eukaryotic and prokaryotic enzymes of DNA metabolism such as DNA polymerasesh26gnnr062185172/xxlarge945.gif" alt="agr" align="BASELINE" BORDER="0"> and h26gnnr062185172/xxlarge946.gif" alt="beta" align="MIDDLE" BORDER="0">, DNA polymerase I, Exo III, pancreatic DNAse I, micrococcal DNAse andE. coli RNA polymerase. Kelletinin I and kelletinin A inhibit preferentially DNA polymeraseh26gnnr062185172/xxlarge945.gif" alt="agr" align="BASELINE" BORDER="0">. The inhibitory effect of kelletinin I involves the hydroxyl group of p-hydroxybenzoic acid.     

论研究开发费用的性质及会计处理

随着知识经济的到来和企业竞争的日益加剧，研究开发费用占企业总支出的比重迅速提高。本文对现行会计制度规定将其计入当期损益的处理方法进行了探讨，认为存在诸多问题。笔者认为应将其作资本化过程加以会计处理。     

h0,h映射与(h0,h)-稳定性

考虑非线性微分系统关于两个测度的稳定性。直接利用两个测度函数h0,h本身的性质而无需另外构Lyapunov函数 得到了两个测度稳定性的几个判定结果。