0.6准则在抗震计算中的应用

抗震计算中一般只取前s阶振型，误差较大，为此研究如何取s及其计算误差显得尤为重要。应用结构动力计算的0．6准则解决这个问题，可达到取s少、计算简便的目的，并使误差分析较准确。     

中学生体育学习成败归因研究

中学生体育学习的成功和失败归于何种原因?本以韦纳的成就归因4因素论为理论依据，通过《中学生体育学习成败归因问卷》(自编)进行调查．运用主成分分析法，对调查结果进行统计运算，构建了成功归因4因素和失败归因5因素的原因结构，并分别对成败归因进行差异检验，提出了3项教学建议．     

峨眉山绿豆岩的应用及其成因探索

该文对峨眉山龙门洞三叠系中统雷口坡组底部“绿豆岩”运用多种分析手段,了解绿豆岩的物质成分及其在农业上的应用。并结合野外观察,对其形成环境及成因进行初步探索。     

Genetic and morphometric variation in the potamonautid river crab Potamonautes parvispina (Decapoda: Potamonautidae) from two Western Cape rivers,South Africa

Patterns of genetic and morphometric variation amongst five populations of Potamonautes parvispina from two rivers in the Western Cape, were examined. Genetic variation at 14 loci was investigated using protein gel electrophoresis. The results showed that the populations were genetically invariant within and between the two drainage systems. Discriminant functions analyses of seven carapace variables demonstrated regional differentiation between the population groups in the two drainage systems. Other morphometric characters exhibited a significant degree of variation within drainage systems. Morphometric data were highly variable and were discordant with the genetic data, which suggests that environmental factors may be responsible for the large degree of phenotypic plasticity. Results from the present study are discussed in terms of widespread gene flow and recent population divergence.     

地层沉陷的数值模拟应用研究

系统地总结了近些年来，应用有限元、离散元等数值分析方法研究开采引起地层沉限的一些成果，用有限单元法分析了辽源矿务局西安煤矿立井保护煤柱开采引起的筒变形和滑移，在断层与井筒交界处，井筒发生了错动，且周围明显呈现塑性破坏区；用离散单元法研究了地下开采引起地层沉陷的动态发展过程，对指导建（构）筑物下开采具有重要意义，并且表明数值模拟方法对分析含构造岩林地表沉陷是行之有效的。     

Synonymy of Rhynchophorus ferrugineus (Olivier), 1790 and R. vulneratus (Panzer), 1798 (Coleoptera,Curculionidae, Rhynchophorinae)

Morphological, molecular-genetic and breeding data were collected to investigate the species status of the Asian palm weevils, Rhynchophorus ferrugineus (Olivier) and R. vulneratus (Panzer) (Coleoptera: Curculionidae). These weevils are distinguished by characteristic colouring of the pronota and elytra, but naturally occurring colour intermorphs were observed. Contrary to the literature, quantitative measurements of the concavity of subgenal sutures and of pronotal shape indicated no differences between the two species. Larvae did not differ significantly in labral characteristics. Random amplified polymorphic DNA (RAPD) banding patterns were identical for nine of 14 primers, indicating that these weevils are very closely related. Sequences of the cytochrome oxidase gene for 201 base pairs read were identical for R. ferrugineus and R. vulneratus, but the congener R. bilineatus differed from them by 10%, suggesting divergence of these lineages about 5?million years ago. Hybrid F1s were obtained from all heterospecific crosses, and one surviving hybrid F1 female produced viable eggs. Previous studies have revealed no pheromonal differences. On the basis of this evidence, R. ferrugineus and R. vulneratus should be considered colour morphs of the same species and be synonymized under the name Rhynchophorus ferrugineus (Olivier), with the common name Asian palm weevil.     

高职院校就业教育系统工程的现状分析与思考——以济源职业技术学院为例

对大学生实施就业教育可以帮助学生成长成才，转变观念，顺利就业。从济源职业技术学院实施就业教育系统工程的现状来看，就业教育系统工程还有提升空间，学校可以在课程教学，学生能力素质培养，加强就业教育合力和深化就业教育的内容与形式等方面下功夫，以期取得新的突破。     

折背型轿车结构参数统计分析

本文对全球514个折背型轿车的结构和参数进行统计,分析了当代折背型轿车的技术主流,达到的平均水平和最高水平,可作为产品论证和自主开发的参考。     

与低空急流相伴的暴雨天气诊断分析

 对1998年5月～2002年5月7例与低空急流相伴的云南全省性暴雨过程进行了合成诊断分析.结果表明:临近暴雨发生时,西南低空急流的形成应是云南暴雨产生的主要原因,暴雨天气通常出现在低空急流北侧风矢呈气旋性弯曲、风速递减的梯度十分明显的区域内;低空急流对于水汽和能量的输送起非常重要的作用,它一方面为暴雨的产生提供了所需要的大量水汽,另一方面又使得暴雨区低层大气增湿增暖,从而引起对流不稳定加强,为暴雨的发生提供大量的不稳定能量.湿位涡分析表明,暴雨发生前,冷暖空气在云南交汇,使大气温湿结构发生变化,θ_e等值面坡度加大,当低空急流移向对流不稳定区时,便有气旋性涡度剧烈发展,导致暴雨天气的发生.     

掺Ni纳米TiO_2粉末的制备、表征及颜色分析

采用两种不同方法制备掺Ni纳米TiO2 粉末 ,即以钛酸四正丁酯为原料 ,用溶胶─凝胶法制备 ,或以硫酸钛和碳酸铵为原料 ,用沉淀法制备 ,并对两种方法制备的样品进行了对比 .对不同煅烧温度和不同掺杂浓度所制备的样品进行了颜色分析 .利用TG_DTA、FTIR、SEM和PL光谱测试技术对样品进行了表征 ,结果表明制备条件不同对样品性能有较大影响 .