河南角姬蜂属二新种 （膜翅目：姬蜂科）

 报道了采自河南的角姬蜂属Cosmoconus Foerster 二新种：西峡角姬蜂 C. xixiaens is Sheng, sp.nov. 和斑角姬蜂C. maculiventris Sheng, sp.nov.,并指出了与近 似种的主要区别特征。     

河南角姬蜂属二新种（膜翅目：姬蜂科）

报道了采自河南的角姬蜂属Cosmoconus Foerster 二新种：西峡角姬蜂 C. xixiaensis Sheng, sp.nov. 和斑角姬蜂C. maculiventris Sheng, sp. nov.,并指出了与近似种的主要区别特征。     

中国兜姬蜂属分类研究(膜翅目,姬蜂科)

报道兜姬蜂属Dolichomitus Smith 1新种:嵩兜姬蜂Dolichomitus songxianicus Sheng,sp.nov.及中国2新纪录种:头兜姬蜂D.cephalotes(Holmgren)、卡西兜姬蜂D.khasianus Gupta et Tikar.编制了中国已知的14种2亚种检索表.     

寄生柳丝叶蜂的卷唇姬蜂属一新种（膜翅目：姬蜂科）

报道寄生天水柳丝叶蜂Nematus sp．的姬蜂科1新种：突角卷唇姬蜂Aptesis corniculata Sheng,sp．nov.,模式标本存国家林业局森林病虫害防治总站。     

短颚姬蜂属和棒角姬蜂属在中国首次发现并记述一新种(膜翅目,姬蜂科)

报道发现于我国的两个新纪录属,短颚姬蜂属Skiapus Morley,1917和棒角姬蜂属Hellwigia Gravenhorst,1823的种类:黑短颚姬蜂Skiapus niger Sheng,sp.nov.和暗棒角姬蜂Hellwigia obscura Gravenhorst,1823.编制了这2属的分种检索表.     

寄生榆童锤角叶蜂的姬蜂种类研究(膜翅目,姬蜂科)

报道2种寄生榆童锤角叶蜂Agenocimbex elmina Li et Wu的姬蜂,其中1种为新种:天水镶颚姬蜂Hyposotertianshuiensis Sheng,sp.nov.;另一种为已知种:日本欧姬蜂Opheltes japonicus(Cushman,1924).     

中国特姬蜂属种类记述(膜翅目,姬蜂科)

报道我国的特姬蜂属Teleutaea Forster,1869种类,含2新种:赤特姬蜂T.rufa sp.nov.、侧特姬蜂T.pleuralis sp.nov.,4中国新纪录种:角特姬蜂T.corniculata Momoi,1978、小特姬蜂T.diminuta Momoi,1978、东方特姬蜂 T.orientalis Kuslitzky,1973和乌苏里特姬蜂T.ussuriensis(Golovisnin,1928).编制了中国已知种检索表.     

江西发现差齿姬蜂属三新种(膜翅目,姬蜂科,柄卵姬蜂亚科)并附中国已知种检索表

报道在江西发现的差齿姬蜂属Thymaris Frster,1869的种类,其中有3新种:黄足差齿姬蜂Th. flavipedalis sp.nov.,红颈差齿姬蜂Th. ruficollaris sp.nov.,沟差齿姬蜂Th. sulcatus sp. nov.和中国1新纪录种纺差齿姬蜂Th. clotho Morley,1913。指出了新种与近似种的鉴别特征,并附彩色特征图。编制了该属中国已知种的检索表。     

寄生云杉球果卷蛾的姬蜂

报道采自青海省祁连县寄生云杉球果卷蛾Laspeyresia strobilella Linnaeus的3种姬蜂,其中1新种:祁连缺沟姬蜂Lissonota qilianica Sheng,sp.nov.,中国1新纪录:欧松梢小卷蛾曲姬蜂Scambus(Scambus)buolianae(Hartig,1838),对青海汤姬蜂Townesia qinghaiensis He,1996的雌性作了首次描记.标本保存在国家林业局森林病虫害防治总站.     

中国发现全沟姬蜂属(膜翅目,姬蜂科)及二新种记述

报道在江西省发现的我国姬蜂科1新纪录属:全沟姬蜂属 Amrapalia Gupta et Jonathan,1970,并记述2新种:黄面全沟姬蜂 A.flavifacialis sp.nov.、黑面全沟姬蜂 A.nigrifacialis sp.nov..指出了与近似种的鉴别特征.编制了我国已知种检索表.     

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.