四川威远恐龙足迹一新属

<正>1985年,自贡恐龙博物馆的朱时达、高人彦、彭光照根据四川威远县荣胜乡沙坝村村民李元吉、李鸣章的报告和地矿部第二地质大队提供的资料,在威远县荣胜乡老鸦坡下侏罗统珍珠冲组下部黄色砂岩上发掘出6个连续恐龙足迹化石,并把这批标本运回自贡恐龙博物馆保存。     

自贡恐龙博物馆

自贡恐龙博物馆黄大喜（自贡恐龙博物馆四川６４３０００）自贡恐龙博物馆位于四川省自贡市大山铺。它是依托于被誉为“恐龙群窟，世界奇观”的恐龙公墓而修建的，属于古生物化石遗址博物馆。大山铺中诛罗世（距今１．６亿年前）恐龙化石埋藏遗址，是在１９７９年１２月四...     

剑龙肩棘材料在自贡的发现

<正> 一九八五年四月,四川省自贡恐龙博物馆在自贡市西南约15公里的仲权乡彭塘,获得一具晚侏罗世剑龙化石(其野外发掘编号为"zY-1").这具剑龙从头部至腰部的骨骼基本关连,是较完整的骨架,仅缺失大部尾椎与部分肢骨.由于尚未修复,暂时还不能作种属的对比与讨论.值得报道的是,我们在这具剑龙的     

自贡恐龙博物馆巡礼

2007年元旦假期细雨沥沥,我还是兴致勃勃,去参观了自贡恐龙博物馆。我从怀化火车站出发,坐了一昼夜火车到达重庆,再转坐大巴车到达自贡汽车总站。随便找一家招待所住下,就打听怎样去自贡恐龙博物馆的公交线路。我是元月5日坐15路公交车前往自贡恐龙博物馆的,该馆离我住处大约有10公里,路况较好,不一会儿就到达了目的地,当我走进博物馆广场时,被眼前的场景吸引住了,首先进入眼帘是“恐龙群窟,世界奇观”横匾立在进口处,使人为之一振,遐想联翩。游人广场中央“大地留痕”和“生命之泉”雕塑格外显眼,示意着地球的产生和生命的诞生,追根求源,世…     

《恐龙去哪儿了》?——来啦

<正>2014年12月20日,公益科普人偶剧《恐龙去哪儿了》在自贡恐龙博物馆游客中心广场首次公演。近千名中小学生、市民和游客观看了这场形式新颖、主题突出、情趣盎然、表演生动的恐龙科普人偶剧。整场演出台上演员演得认真,台下观众看得尽兴,时有互动,欢声不断。《恐龙去哪儿了》是由自贡恐龙博物馆与自贡市灵犀义工联合会共同创编的一出以恐龙为题材、旨在普及恐龙及相关的科学知识、弘扬正能量、传播团结友爱和勇敢奋进精神的人偶剧。     

创新科普模式 让博物馆更有趣——记“穿越侏罗纪·自贡恐龙博物馆不眠夜”活动

<正>博物馆的重要职能之一是服务于社会教育。在博物馆举办丰富多彩的科普活动,是吸引观众的一个重要手段,也是一个博物馆活力的体现。长期以来,自贡恐龙博物馆十分重视教育职能的发挥,不断改善教育环境、丰富教育内容、创新教育方式,取得了不错的效果。近年来,我馆成功创办"自贡恐龙复活节",创编科普人偶剧《恐龙去哪儿了》,开展"穿越侏罗纪·自贡恐龙博物馆不眠夜"亲子体验活动等,都是为了拉近博物馆与公众的距离,让公众通过参与体验,感知恐     

评《自贡地区侏罗纪恐龙动物群》

<正>由自贡恐龙博物馆彭光照、叶勇等5人编著的《自贡地区侏罗纪恐龙动物群》一书问世了。这是第一部关于自贡地区恐龙及其他脊椎动物综合研究的著作,填补了自贡恐龙及其他脊椎动物化石系统研究的一项空白,引起了国内外有关专家的兴趣和关注。该书在收集、整理大量相关研究的历史资料基础上,系统总结了1915年至今90年来,特别是自贡恐龙博物馆建馆近30年来,在自贡地区侏罗纪地层中发现的所有脊椎动物化石标本,并从动物群组合的角度探讨了自贡地区恐龙及其他脊椎动物组成面貌、时代分布状况和演变关系,使读者对自贡地区出土的脊椎动物化石的时空分布和变化情况有了更清晰明了的认识。     

“前事不忘,后事之师”——记自贡盐业历史博物馆的化石保护工作

四川省自贡市盐业历史博物馆,是一个具有浓厚地方特色的专业性博物馆。自1959年建馆以来,贯彻“古为今用”的方针,在搜集、整理自贡地区盐史文物资料,开展科研,组织陈列,向广大群众进行历史唯物主义、爱国主义与科学技术教育等方面,进行了许多卓有成效的工作。同时,他们还从本地的实际和人民群众的需要出发,在自贡恐龙博物馆尚未建立之前,主动承担起保护本地区古生物化石的责任,作了大量工作。“前事不忘,后事之师”。如今,当我们高兴地看到自贡恐龙博物馆已初具规模并日益显露出它神奇光彩的时候,当然不会忘记盐业历史博物馆在保护自贡地区化石中所作出的贡献。笔者先后在盐业历史博物馆和恐龙馆筹建办公室工作十四年,现据有关资料和个人回忆整理出这篇拙作,以表达自己的怀念和崇敬心情。     

自贡恐龙多奇观

自贡恐龙多奇观曾上游自贡地区（面积约４０００平方公里）的恐龙化石产出由来已久,极具影响。自１９１５年迄今近８０年间,已累计发现恐龙化石点百余处（其中半数以上是在近１０年内由自贡恐龙博物馆调查处理的）。发掘出的恐龙化石几乎包括了侏罗纪早、中、晚三个不同...     

红岩山桫椤生态适应的观察

红岩山位于距四川宜宾市南面约13公里的南广河畔,起于高县胜天乡,止于宜宾市大益乡,方圆90平方公里。山势呈南北走向,东经104°45′、北纬28°48′,海拔750米,年平均气温18℃,降水量1048.2毫米,无霜期360天。土壤属侏罗系母质酸性紫色土和加定层黄壤土,红岩山因其表土层呈砖红色而得名。由于受南太平洋暖流影响,红岩山属典型的南亚热带气候,     

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.