内蒙古拟埃蝗属一新种记述（直翅目：剑角蝗科）

记述采自内蒙古锡林浩特地区拟埃蝗属1新种,即锡林拟埃蝗Pseudoeoscyllina xilingensis sp.nov.附有拟埃蝗属分种检索表。新种的模式标本保存于陕西师范大学动物研究所昆虫标本室。     

东北大兴安岭雏蝗属二新种：（直翅目：网翅蝗科）

本文记述了在内蒙古大兴安岭采到的雏蝗属2新种:黑背雏蝗Chorthippusatridorsus,sp.nov.和红翅雏蝗Chorthippus rufipennis,sp.nov.,模式标本保存于中山大学昆虫学研究所标本室。     

大兴安岭地区雏蝗属一新种(直翅目:蝗总科)

雏蝗属Ｃｈｏｒｔｈｉｐｐｕｓ Ｆｉｅｂｅｒ是网翅蝗科中一个大属,广泛分布于中国古北区。本文记述采自内蒙古大兴安岭地区的雏蝗属一新种：额左旗雏蝗Ｃｈｏｒｔｈｉｐｐｕｓ ｅｚｕｏｑｉｅｎｓｉｓ ｓｐ．ｎｏｖ．,模式标本保存于东北师范大学生物系动物标本室。     

中国内蒙古贺兰山地区拟埃蝗属二新种(直翅目,剑角蝗科)

记述采自内蒙古贺兰山地区拟埃蝗属Pseudoeocyllina 2新种,即拟短翅拟埃蝗Pseudoeocyllina brevipennisoides Zhang,Zheng et Yang,sp. nov.及贺兰山拟埃蝗Pseudoeocyllina helanshanensis Zheng,Zeng et Zhang,sp. nov.,附有拟埃蝗属分种检索表.模式标本保存于陕西师范大学动物研究所昆虫标本室。     

中国内蒙古蝗虫一新属一新种(直翅目,癞蝗科,癞蝗亚科)

记述了采自中国内蒙古癞蝗科癞蝗亚科1新属华笨蝗属Sinohaplotropis gen.nov.,1新种鄂伦春华笨蝗Sinohaplotropis elunchuna sp.nov.,该新属近似笨蝗属Haplotropis Saussure,1888,区别特征为雄性下生殖板背面观端部呈2分叉。模式标本保存于山东农业大学植物保护学院,泰安,山东。     

中国窝蝗属一新种：直翅目：蝗总科：剑角蝗科

本文了剑角蝗科窝蝗属１新种：郑氏窝蝗Ｆｏｖｅｏｌａｔａｃｒｉｓ ｚｈｅｎｇｉ,ｓｐ．ｎｏｖ。,采自甘肃省南县宝瓶河牧场;并据此对属征作了必要的修订,给出了分种检索表。模式标本保存于陕西师范大学动物研究所。     

金色蝗属的分类研究及一新种记述（直翅目: 剑角蝗科）

本文记述采自内蒙古贺兰山地区金色蝗属Chrysacris 1新种, 即白纹金色蝗Chrysacris albonemus Zheng, Zhang et Zeng sp. nov. 该新种近似于山间金色蝗Chrysacris montanis Zhang et Zheng, 1993, 主要区别为: 1)头顶及头部背面具中隆线; 2)前胸背板沟前区长为沟后区长的1.6~1.8倍; 3)前翅前缘脉域宽为中脉域宽的1.5~2倍。附有金色蝗属分种检索表。模式标本保存于陕西师范大学动物研究所昆虫标本室。     

甘肃省雏蝗属一新种记述（蝗总科：网翅蝗科）

本文记述了雏蝗属一新种：短角雏蝗（Ｃｈｏｒｔｈｉｐｐｕｓｂｒｅｖｉｃｏｒｎｉｓｓｐ．ｎｏｖ．,采自甘肃省肃南县宝瓶河牧场。模式标本存于陕西师范大学动物研究所。     

新疆异痂蝗属一新种：直翅目：蝗总科：斑翅蝗科

本文描述采自新疆北部异痂蝗属ＢｒｙｏｄｅｍｌｌａＹｉｎ１新种一小异痂蝗Ｂｒｙｏｄｅｍｅｌｌａｅｌｅｇａｎｓ,以下核实 特征而显著区别于该属其他种：（１）雄性型很小,体长在２３ｍｍ以下;（２）前胸背板背面沿后缘具１褐黄色带。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细     

Selection with two alleles and complete dominance

For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.