Si—nipi超晶格电子结构温度效应的研究

我们计算了电子结构和其它的物理参数,对温度是很好地自洽的。用各向异性有效质量及局域密度泛函近似为框架,我们发现对电子亚带和有效带能隙的影响是明显的。     

表面δ力(SDI)+四极力(QI)与~(14)C核能谱

本文用组态混合方法,选择SDI+QI作为有效相互作用,计算了~(14)C的能谱,计算结果同实验值符合的很好。同时也用SDI作为有效相互作用计算了~(14)C的能谱,比较发现,SDI+QI比单纯的SDI作为有效相互作用有明显的改进。     

The atmospheric environment—an introduction

The atmosphere is part of the environment with which the human organism is permanently confronted. Epidemiological research investigates the occurrence of effects on morbidity and mortality due to heat, cold, air pollution and changes in the weather. Concentrating on aspects of the environment relevant for medical questions, three major complexes of effects can be discriminated: the complex conditions of heat exchange, the direct biological effects of solar radiation, and air pollution. Biometeorological knowledge can serve to assess the atmospheric environment, and can also be of help in the field of preventive planning, to conserve and develop the climate as a natural resource with regard to man's health, well-being and performance.     

一种计算机图象特技动画制作算法

文章着重了在计算机上，对２幅或多幅数字图象进行了特技动画制作的有关技术。首先讨论利用已知的２幅相关或不相关的图象作为参考图象，通过空间象素和色彩的线性插值，妥从一幅图象变换到另外一幅图象的图象变形中间画面。然后讨论了多幅彩色图象的同屏幕显示技术以及图象的淡入和淡出技术。     

中子物质的一种可能相变

建议高密物质中子化后出现夸克集团相，这是一种带色的中子．分析了相应温度和密度．讨论了新相的自族长程序和类铁磁的畴状结构．     

Growth,development, feeding preference,and food consumption and utilization by tobacco hornworm on tobacco mosaic virus-infected and non-infected tobacco leaves

Summary Plant disease may cause a variety of changes in plants which influence their suitability to insect herbivores. The reported physiological changes in tobacco due to infection by tobacco mosaic virus have the potential to influence the feeding, growth and behavior of the tobacco hornworm,Manduca sexta. However, feeding on foliage of systematically infected plants had no statistically significant effects on development time, mean pupal weight or the amount of foliage consumed by 4th instars. Although an initial preference was exhibited by larvae for healthy leaves after about 72 h no differences were observed. These results do not support the results of previous research on the influence of tobacco mosaic virus-infected plants on the tobacco hornworm.Scientific contribution No. 8130, article No. A-5071, of the Maryland Agricultural Experiment Station, Department of Entomology     

IX的4d~75p组态的能级计算

根据文献[1]描述的方法,外推文献[2～8]中 PdⅢ～TeⅨ的实验数据,得到了ⅠⅩ 4d~75p 组态的各 Slater 参数和弱组态相互作用参数。用这些参数计算了9次电离碘离子4d~75p 组态的能级和谱项分量.     

零标架及其应用

本文从拟正交标架出发定义了零标架,并以双荷引力场的球对称稳态度规为例,得出它的零标架表示,最后又利用r复延拓的方法导出此转动球的外部度规。