新疆阿勒泰地区早石炭世晚期菊石相四射珊瑚

本文描述的四射珊瑚是1979年窦亚伟同志和1981年新疆区调队十分队采自新疆北部阿勒泰地区下石炭统那林卡拉组,共生的化石还有大量菊石、鹦鹉螺及少数腹足类。文中计描述9属、11种和2未定种,其中新种11个。那林卡拉组的珊瑚群性质特殊,缺乏早石炭世大塘期常见的Kueichouphyllum Yu,Carcinophyllum Thomson et Nicholson,Gangamophyllum(Gorsky),Arachnolasma (Grabau),     

内蒙古阿拉善左旗早石炭世有孔虫动物群的发现

笔者首次发现内蒙古阿拉善左旗地区井下早石炭世晚期有孔虫动物群,经研究计有１４属１８种,其中小有孔虫１２属１６种（１新属,新种）Ｔｉｎｇ２属２种,这一孔虫动物群的发现,除证明该地区存在早石炭世地层外,对当时岩相古地理面貌的分析,也具有重要意义。     

北祁连山东段早石炭世棘鱼类、辐鳍鱼类和软骨鱼类--北祁连山东段石炭纪鱼类序列研究之一

对甘肃靖远一带和内蒙古自治区黑山地区早石炭世前黑山组、臭牛沟组和靖远组中三亚纲鱼类微体化石进行了形态学和古组织学研究。这些化石涉及 7个目或亚目 ,含 4属 4种 ,其中有 2新种。文中记述的属均为全球广布的属。建立了 3个早石炭世鱼类组合 ,这是我国早石炭世第一个鱼类组合序列。辐鳍鱼类和软骨鱼类中 2个目的化石均为我国早石炭世鱼类的首次记录     

粤北韶关早石炭世大塘期牙形刺

作者发现了广东韶关早石炭世大塘期一些牙形刺,其中石磴子组11属20种(包括1新种和1新亚种),梓门桥组8属9种,并与国内外一些地区相当的牙形刺带进行了比较和讨论。对重要的台型牙形刺和新种作了简要描述。根据牙形刺的面貌,梓门桥组中下部可能属早石炭世。     

广西荔浦早泥盆世腹足类

腹足类化石采自广西荔浦栗木早泥盆世四排组,共3属4种:Oriostoma?lipuense sp. nov., Naticopsis sp., Murchisonia angulata Philips, Murehisonia bachelieri Rouault其中Murchisonia属的两种是西欧早泥盆世常见的分子。Oriostoma?lipuense是1个归属有疑问的新种。与腹足类共生的有早泥盆世的腕足类、轮藻和介形类等化石。     

新疆北部侏罗、白垩纪非海相腹足类

记述新疆准噶尔盆地和吐鲁番盆地侏罗、白垩纪非海相腹足类１０属１５种，其中６新种、１未定种。根据这些腹足类的地层分布特点将它们划分为３个组合，自下而上为１）Ｖｉｖｉｐａｒｕｓｓａｎｇｏｎｇｈｅｅｎｓｉｓ组合，时代为早侏罗世；２）Ｖｉｖｉｐａｒｕｓｑｉｋｅｔａｉｅｎｓｉｓ－Ａｍｐｌｏｖａｌｖａｔａｓｕｔｕｒａｌｉｓ组合，时代为中侏罗世；３）Ｃｉｎｃｉｎｎａｔｕｒｇｅｎｓｉｓ组合，时代为早白垩世。对这些腹足类生活习性的分析，这两个盆地在早侏罗世气候温暖湿润，草木繁茂，大部分地区为平静、滞流的湖泊、沼泽；中侏罗世盆地相对下陷，水域扩大加深；中侏罗世末期至晚侏罗世早期，盆地抬升，水域范围明显缩小；至早白垩世，盆地又扩大加深。     

江西玉山王家坝早志留世早期(Early Llandoverian)新腕足动物群的发现及其意义

系统描述江西省玉山县王家坝地区早志留世早期（ＥａｒｌｙＬｌａｎｄｏｖｅｒｉａｎ）地层中新发现的腕足动物群６目、９超科、１７科（其中１新科）、２１属（其中１新属）、２８种（其中７新种、１相似种、６未定种）,并将它们统称为ＩｓｏｒｔｈｉｓＬｅｐｔａｅｎａ动物群。同时指出发现该腕足动物群的意义及其生存的地质时代。     

四川巴塘、义敦的晚古生代四射珊瑚

本文记述巴塘、义敦早石炭世最晚期的Hiroshimaphyllum 动物群和早二叠世晚期的Ira-nophyllum-Ipciphyllum 动物群。这两个动物群的性质不同于我国华南和西南地区同期地层中所见者。文内探讨了形成这两个动物地理区的主要因素。本文共描述早石炭世最晚期的珊瑚5属7种,其中2新属、4新种、2未定种;早二叠世晚期4属4种,其中2新种、1未定种。     

江西清江盆地早第三纪新余组腹足类化石

一、前言江西清江盆地早第三纪地层发育良好,产有丰富的腹足类化石,已报道的有清江组和临江组的非海相腹足类化石(余汶,1977,1983).本文记述的是清江盆地西部边缘新余县马洪乡新余组中的陆生腹足类化石,共计6属、8种,隶属4科,其中包括1新属和5新种.同时,对这一腹足类化石组合的性质及其时代特征,新余组的沉积环境及时代归属等问题进行了探讨.本文是在余汶老师悉心指导下完成的.承     

塔里木盆地西北缘早古生代红层腹足类化石*

简述塔里木盆地西北缘柯坪巴楚地区的早古生代红色岩系，描述晚奥陶世-早志留亚纪腹足类化石14属14种，其中2新种。     

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.