陕西省环尾春蜓属一新种

记述采自陕西省汉中市郊的环尾春蜓属1新种汉中环尾春蜓Lamelligomphus hanzhongensis,     

云南亚春蜓属一新种(蜻蜓目,春蜓科)

记述亚春蜓属1新种,贡山亚春蜓Asiagomphus gongshanensis sp.nov.,模式标本存放云南大理学院生命科学与化学学院.     

中国云南奈春蜓属一新种(蜻蜓目,春蜓科)

记述奈春蜓属1新种,二齿奈春蜓Nychogomphus bidentatus sp.nov.,模式标本存放在云南大理学院生命科学与化学学院。     

中国小叶春蜓属研究(蜻蜓目,春蜓科)

记述了小叶春蜓属中国的4种及1亚种,描述了其中1新种.间纹小叶春蜓,新种Gomphidia interruptistria sp.nov.(图1～11)正模♂,云南省勐腊县瑶区,海拔1 000 m,2004-07-28,查岭生采.模式标本存放于陕西师范大学动物研究所.文中附有该属在我国的种检索表.新种与G.k.kruegeri及G.k.fukienensis相似,其主要区别见表1.词源:新种的背条纹和领条纹,以及背条纹和肩前上点均完全间断,故取名间纹小叶春蜓.     

中国云南省奇春蜓属一新种(蜻蜓目:春蜓科)

记述中国新记录属——奇春蜓属Perissogomphus Laidlaw,1922和1新种——朝氏奇春蜓P.asahinai,sp.nov.,模式标本保存在大理学院。     

汉森安春蜓(Amphigomphus hansoni Chao)的雌性记述(蜻蜓目:春蜓科)

首次记述汉森安春蜓（Amphigomphus hansoni Chao,1954）的雌性,标本存放于漳州教育学院生物标本室。     

《中国春蜓分类》

<正> 本书由福建农学院生物防治研究所赵修复教授著,福建科学技术出版社1991年2月出版。 本书是我国第一本最完备的春蜓分类专著。该书分总论和各论两大部分。总论分4章,论述中国春蜓分类研究简史、形态特征、中国春蜓地理分布和中国春蜓科分类系统。形态特征一章,除列举重要分类特征外,还选择双峰弯尾春蜓作外部形态详细研究,使本科分类建立在坚实的形态学基础上。各论分4章,记述本科的4个亚科、33属、145种,内含在本书中发表的2新属、11新     

云南钩尾春蜓亚科二新种(蜻蜓目:春蜓科)

记述采白云南省春蜒科2新种：卢氏奈春蜒Nychogomphus lui sp．nov．和文山刀春蜒Scalmogomphus wenshanensis,sp．nov．。模式标本保存于浙江自然博物馆昆虫标本室。     

蜓类一新属——莎车蜓（Shachella）

文章描述了塔里木西南缘上石炭威宁阶下部（莫斯科阶下部）蜓类一新属莎车蜓（Ｓｈａｃｈｅｌｌａ）,此属与Ｐｒｏｆｕｓｕｌｉｎｅｌｌａ特征相似,但外圈出现蜂巢状构造（微孔构造）,但外圈出现蜂巢状构造（微孔构造）,这种构造与希瓦格蜓科之典型蜂巢层无本质之区别,可称为细蜂巢层。     

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.