云南玉溪地区人口的性比

对云南玉溪地区1982年人口普查时的性比(男:女100)进行了分析,发现:(1)玉溪地区总人口的性比(99.22)比全国的(106.3)低,0—4岁与5—9岁儿童的性比(103.45与102.9)也比全国的(107.15与106.24)低。(2)傣族的性比特别低,其0—14岁儿童的性比为98.54;回族的性比也较低,其0—14岁儿童的性比为101.22;汉族0—14岁儿童性比则为104.16。(3)“大跃进”与“国民经济暂时困难”时期出生的人(20—24岁)性比特别低,仅为92.30,而且按民族,县,及城、乡分别统计时均有同样趋势。这一情况在全国人口性比统计中也得到证实。作者估计,这可能是当时自然流产增多造成的。(4)玉溪地区解放以来总人口性比不断增高,1953年为88.70,1964年为94.94,1982年则为99.22。(5)城镇人口的性比(156.48)比农村的(95.86)高得多,这与全国各地区相同。     

云南省人口的性比

对云南省1990年人口普查时的性比(男:女100)进行了分析研究,发现:(1)云南省总人口的性比(105.67)比1982年人口普查时提高了2.89,比全国的(106.60)仅低0.93,开始高出“性比较为严衡状态”(1003.5:1000),为1005.3:1000,且后8年年均递升速度为1982年的18年的2.19倍。(2)景颇族的性比特别低(95.77),而汉族0—14岁儿童性比则为107.27。(3)云南“大跃进”与“国民经济暂时旧难”时期出生的人,1982年”三普”时(20—24岁)性比特别低(101.11),可1990年“四普”时(28—32岁)却达107.84。(4)城镇人口的性比(113.01),比农村入门的性比(105.67)高得多,但差异在减小,(5)全省各地人口性比不同。     

细菌生长延迟期和对数期的定义及其计算

细菌生长延迟期和对数期的定义及其计算云南玉溪地区卫生防疫站玉溪６５３１００王树坤,李万林,向永芬,任东升云南玉溪师范高等专科学校吴献花,杨继民１．引言分批培养的细菌,根据生长繁殖速度的不同,可将生长曲线分为延迟、对数、稳定和衰亡四个时期。我国对这四个...     

玉溪地区风景游览区小型兽类调查

玉溪地区风景游览区小型兽类调查黄正美,拔文福,范波,何学元玉溪地区卫生防疫站玉溪６５３１００１９９２—１９９３年先后对云南省玉溪地区５个主要风景游览区（玉溪市九龙池公园、通海县秀山公园、澄江县西浦公园、易门县龙泉公园和新平县龙泉寺）小型兽类进行了调查...     

出生性比研究

对 1971— 1993年云南昆明、玉溪、红河、思茅、西双版纳、大理、楚雄、丽江等 8地、州、市 66个医疗单位接生的新生儿资料进行调查 ,获取401454例新生儿性别等有关资料。发现 :( 1 )出生性比在上升 ,由 1971年的 104 .06上升到 1993年的 108.57;1974年最低 ,为 101 .11 ,1991年最高 ,为 111 .87。 23年中 ,平均每年上升 0 .47。 ( 2 )一年之中 ,新生儿出生人数的高峰期为 10、 11、 12等 3个月 ,峰顶为 11月 ,占 11 .01% ;出生性比的峰顶为 3、4、6、7、9等5个月 ,最高为 9月 ,达 109.47。 ( 3)城、乡出生性比差异显著。不论胎次 (一、二胎 )和月份 ( 8、 9两月除外 ) ,市、县城区 ,出生性比均显著高于农村。 ( 4) 1 979年以前的出生性比在101 .11— 105 .67之间 ,1980年以后的出生性比在 104 .17— 111 .87之间。 ( 5 )提出了维持性平衡的6点对策。     

灯台树根的止咳活性成分

灯台树(Alstonia scholaris)属夹竹桃科(Apocynace-ae)鸡骨常山属植物,主要分布于台湾、湖南、广东、广西和云南。在西双版纳地区傣族人民将其作为止咳药而广泛应用(赵世望和刀正员,1980)。灯台叶曾收载于《陆川本草》、《云南中草药选》、《中华人民共和国药典》(1977年版一部     

《云南高等植物电子辞典》印象

2009年,由中国科学院昆明植物研究所组织编写完成的《云南高等植物电子辞典》光盘版,由云南音像出版社正式出版发行。数据库是在已出版的《云南植物志》的基础上,参考《中国高等植物科属检索表》、《中国植物志》、《中国种子植物数据库》光盘、《云南种子植物名录》、《横断山维管植物名录》等相关内容而研发的。2000年我也使用过《中国种子植物》数据库光盘,也写了一篇名为《中国种子植物》     

九香虫形态及生物学特征研究

通过建立网室近自然实验种群,结合野生个体观察记述了云南玉溪九香虫Coridius chinensis (Dallas)种群的各虫期形态特征、在云南玉溪红塔区的年生活史、寄主范围、取食偏好、成虫及若虫的行为习性,为该虫的保育和规模化养殖提供依据。结果显示,九香虫卵有绿色和粉色两种生态型,若虫有5个龄期;在云南玉溪红塔区1年仅发生1代,仅以成虫态越冬;红塔区九香虫野生个体主要以佛手瓜和南瓜等葫芦科植物为食;取食偏好选择试验表明该虫最喜取食葫芦,冬瓜和南瓜次之;雌雄成虫可多次交配多次产卵,单雌单次平均产卵量为16.3±6.0粒。研究表明,云南玉溪红塔区的九香虫种群为典型的一化性昆虫,休眠期可达8个月;该虫食性较广,可取食多科植物,但以葫芦科瓜类为主;羽化成虫每年9月中旬至10月上旬陆续从佛手瓜、南瓜等寄主植物上迁至枯树皮下、柴堆等隐蔽场所越冬,翌年4月下旬陆续解除休眠,迁至佛手瓜、南瓜等作物上取食繁殖。     

云南峨山县老龙洞发现旧石器

云南峨山县老龙洞发现旧石器１９９３年１０月下旬．由云南省博物馆、玉溪地区文管所和峨山县文化局组成的发掘队．在以山县老龙洞发掘中．获重大收获．峨山县东里昆明１４０公里．塔甸位于用山县城西北５９公里,老龙洞在塔甸敬【约／（Ｍ米处已用群大理岩构成的山脚．地...     

云南省玉溪地区鼠类感染路氏锥虫的初步调查

云南省玉溪地区鼠类感染路氏锥虫的初步调查黄正美玉溪地区卫生防疫站玉溪６５３１００路氏锥虫（Ｔｍｐｎｏｓｏｍａ山Ｗ０ｉ）是寄生在鼠类血液中的一种常见鞭毛虫,国外已有人体感染病例报道,国内刘俊华等（门亦从人群中查出该虫抗体。为了解玉溪地区不同鼠种中路氏锥...     

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.