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Search Results: 1 - 10 of 25836 matches for " 钱远槐 "
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中国黑腹果蝇种组40种果蝇的核型多样性研究
,张文燕,邓秋红,张菁,曾庆韬*,刘艳玲,李守涛
生物多样性 , 2006,
Abstract: ?通过传统的敲片、giemsa染色的方法制片对中国黑腹果蝇种组(drosophilamelanogasterspeciesgroup)8个种亚组40种果蝇的染色体进行了分析,共发现18种核型,即a、a′′、c、c′、c′′、c′′′、c′′′′、d、d′、d′′、e、e′、e′′、f、f′、g、h和i,其中a、a′′、c′′′、c′′′′、d′′和f′为新发现的核型。8个种亚组的基本核型分别是:嗜凤梨果蝇种亚组(d.ananassaesubgroup)的核型为f、f′、g和h型;牵牛花果蝇种亚组(d.eleganssubgroup)的核型为a和a′′型;细针果蝇种亚组(d.eugracilissubgroup)的核型为c型;嗜榕果蝇种亚组(d.ficusphilasubgroup)的核型为c′型;黑腹果蝇种亚组(d.melanogastersubgroup)的核型为c和c′型;山果蝇种亚组(d.montiumsubgroup)的核型为c、c′、c′′、d、d′、d′′、e、e′、e′′和i型;铃木氏果蝇种亚组(d.suzukiisubgroup)的核型为c′′′和c′′′′型;高桥氏果蝇种亚组(d.takahashiisubgroup)的核型为c、c′′′和c′′′′型。透明翅果蝇(d.lucipennis)雌性核型2n=8,雄性核型2n=7,雄性ⅳ号染色体为染色体单体。此外还发现,吉川氏果蝇(d.kikkawai)、林氏果蝇(d.lini)、奥尼氏果蝇(d.ogumai)、拟嗜凤梨果蝇(d.pseudoananassae)和叔白颜果蝇(d.triauraria)5种果蝇有b染色体。本文确定了d.sp.likeelegans、d.sp.likenyinyii、d.sp.liketrapezifrons1、d.sp.liketakahashii、d.sp.liketrapezifrons2和d.sp.likeauraria等6个未描述种的核型和1个新记录种吉里果蝇(d.giriensis)的核型。本研究证明了在黑腹果蝇种组内、亚组内、种内和单雌系内的核型多样性,为果蝇遗传和进化提供了进一步的细胞学证据。
Three Steps for Amplifying Quick Evolving Region of DNA
三步法扩增高变异区DNA

QIU Gang,ZENG Qing-tao,JIN Shan,QIAN Yuan-Huai,
邱 钢
,曾庆韬,金 珊,

遗传 , 2005,
Abstract: A common problem in research of molecular evolution is difficult to efficiently amplify quick evolving target sequence of genes in different species or genus using specific primers, thus making experimental process and final (analysis of) total results delayed. Although using nested or semi-nested PCR can prominently increase PCR specificity, it really cannot efficiently amplify quick evolving region of DNA in our research of gene Fak56D. In this research, we need PCR products corresponding to gene Fak56D of different species of Drosophila melanogaster or other genus of Drosophila. For the high evolutionary rate,most materials did not produce qualified PCR products. To solve this problem, we initially used a combination method of three steps, i.e. semi-nested PCR taken together with orientational gel extraction, which satisfactorily met the demands of next cloning and sequencing steps.
Karyotypes of Five Species in the Drosophila Melanogaster Species Group
黑腹果蝇种组五种核型的报道

ZHANG Wen-Yan,ZHANG Jing,QIAN Yuan-Huai,ZENG Qing-Tao,
张文燕
,张菁,,曾庆韬

遗传 , 2006,
Abstract: Based on the traditional knocking-slides and Giemsa-staining methods,this paper firstly analyzed the metaphase chromosomes of five species (D. constricta, D. ohnishii, D. ogumai, D. pseudobaimaii and D. tani) of Drosophila melanogaster species group. The results show that all of the five species share the same chromosomal numbers (2n=8) but with different typical shapes. D. pseudobaimaii and D. tani share the shape 2V, 1R, 1D; D. constricta shows 2V,1R,1D with unclear recognized dot chromosomes; D. ohnishii and D. ogumai share the same chromosomal shapes 2V2R. And that between karyotype and phylogenetic relationships are found to be correspond.
Karyotype diversity of Drosophila melanogaster species group in China
中国黑腹果蝇种组40种果蝇的核型多样性研究

Yuanhuai Qian,Wenyan Zhang,Qiuhong Deng,Jing Zhang,Qingtao Zeng,Yanling Liu,Shoutao Li,
,张文燕,邓秋红,张菁,曾庆韬,刘艳玲,李守涛

生物多样性 , 2006,
Abstract: 通过传统的敲片、Giemsa染色的方法制片对中国黑腹果蝇种组(Drosophilamelanogasterspeciesgroup)8个种亚组40种果蝇的染色体进行了分析,共发现18种核型,即A、A′′、C、C′、C′′、C′′′、C′′′′、D、D′、D′′、E、E′、E′′、F、F′、G、H和I,其中A、A′′、C′′′、C′′′′、D′′和F′为新发现的核型。8个种亚组的基本核型分别是:嗜凤梨果蝇种亚组(D.ananassaesubgroup)的核型为F、F′、G和H型;牵牛花果蝇种亚组(D.eleganssubgroup)的核型为A和A′′型;细针果蝇种亚组(D.eugracilissubgroup)的核型为C型;嗜榕果蝇种亚组(D.ficusphilasubgroup)的核型为C′型;黑腹果蝇种亚组(D.melanogastersubgroup)的核型为C和C′型;山果蝇种亚组(D.montiumsubgroup)的核型为C、C′、C′′、D、D′、D′′、E、E′、E′′和I型;铃木氏果蝇种亚组(D.suzukiisubgroup)的核型为C′′′和C′′′′型;高桥氏果蝇种亚组(D.takahashiisubgroup)的核型为C、C′′′和C′′′′型。透明翅果蝇(D.lucipennis)雌性核型2n=8,雄性核型2n=7,雄性Ⅳ号染色体为染色体单体。此外还发现,吉川氏果蝇(D.kikkawai)、林氏果蝇(D.lini)、奥尼氏果蝇(D.ogumai)、拟嗜凤梨果蝇(D.pseudoananassae)和叔白颜果蝇(D.triauraria)5种果蝇有B染色体。本文确定了D.sp.likeelegans、D.sp.likenyinyii、D.sp.liketrapezifrons1、D.sp.liketakahashii、D.sp.liketrapezifrons2和D.sp.likeauraria等6个未描述种的核型和1个新记录种吉里果蝇(D.giriensis)的核型。本研究证明了在黑腹果蝇种组内、亚组内、种内和单雌系内的核型多样性,为果蝇遗传和进化提供了进一步的细胞学证据。
银额果蝇武汉群体的B染色体研究 The Study of B Chromosomes in Drosophila albomicans in Wuhan Population
,张菁,薛小桥,易梅生,马星季QIAN Yuan-Huai,ZHANG Jing,XUE Xiao-Qiao,YI Mei-Sheng,MA Xing-Ji
遗传 , 1995,
Abstract: 本研究发现,银额果蝇武汉群体的有丝分裂中期核型中存在着B染色体,其出现频率为38%,仅低于昆明,而高于其他地区。 B染色体形态为点状。细胞内染色体的不同步分裂可能是造成B染色体形成的一个原因。
Phylogeny of melanogaster Species Group Inferred from ND4L and ND4 Genes
以ND4L和ND4基因为标记探讨黑腹果蝇种组的系统发育关系(英文)

MOU Shao-liang,ZENG Qing-tao,YANG Yong,QIAN Yuan-huai,HU Guang-an,
牟少亮
,曾庆韬,杨勇,,胡广安

动物学研究 , 2005,
Abstract: The relationships within Drosophila melanogaster species group are controversial from morphology, chromosomes and DNA sequences. This study utilises a molecular approach aimed at uncovering the phylogenetic relationships among 33 taxa representing 8 subgroups of D. melanogaster species groups. Mitocondrial ND4L-ND4 was sequenced in the all 8 subgroups covering a wide geographic area. MP and Bayesian analysis produced an identical tree topology with relatively strong support in most nodes. It reveals that the melanogaster species group clustered in three main lineages: 1) montium subgroup; 2) ananassae subgroup; 3) Oriental subgroups (melanogaster, ficsphila, eugracilis, elegans, suzukii and takahashii). The montium subgroup branched off first, followed by the ananassae subgroup. In the third lineage, melanogaster is the most divergent subgroup followed by ficsphila, eugracilis, elegans in that order. The suzukii and takahashii sister subgroups are the last to branch off.
计算机模拟混合炸药分子间作用的研究进展
,
含能材料 , 2013, DOI: 10.3969/j.issn.1006-9941.2013.05.014
Abstract: 简介了量子化学、分子力学、分子动力学、耗散粒子动力学等常用计算机模拟方法,重点综述了采用这些方法研究单质炸药聚合体中、不同炸药分子间、炸药与其他组分间、添加改性组分间以及组分界面间等不同情形相互作用的进展,并展望了计算机模拟混合炸药分子间作用的发展方向,认为提高准确性和降低耗时、改进和发展分子力场以及实现多尺度模拟等将是今后研究的重点。
基于能值的污水处理系统环境影响分析
李敏,张小洪,,张鸿,赵敏,邓仕**
应用生态学报 , 2013,
Abstract: 污水处理厂及其“产物”(处理水和脱水污泥)的处理处置系统共同构成了污水处理综合系统,它从整体上涵盖了污水处理的全过程.污水处理综合系统在构建和运行的过程中主要包括两方面的环境影响:1)物质资源的消耗;2)排放污染物对环境的危害,而后者在既往有关的污水处理系统分析中往往被忽略.为了更全面地了解污水处理过程的环境影响状况,本文以能值分析理论为基础对污水处理综合系统进行分析,同时,结合生态足迹理论对系统的可持续性进行分析.结果表明:水体污染物的环境影响能值远大于大气污染物,且主要受氨氮排放量的影响;污水处理综合系统的能值消耗主要为废物流能值和本地可更新资源能值;“处理厂系统+填埋系统”的能值利用效率最高,“处理厂系统+中水回用系统+焚烧系统”的能值利用效率最低;“处理厂系统+中水回用系统+填埋系统”的环境可持续性最好,而“处理厂系统+焚烧系统”的可持续性最差.?
实时控制SBR系统中的短程硝化反硝化
邓仕,李晓璐,,武俊英,张小平
环境工程学报 , 2007,
Abstract: 以人工模拟高氨氮废水为研究对象,采用循环间歇式曝气方式,以溶解氧浓度(DO)和pH值为过程控制参数,对SBR系统进行实时控制、全程跟踪。根据此过程中COD、NH+4N、NO-2N和NO-3N4项水质指标的变化情况,研究SBR系统中的短程硝化反硝化工艺。实验结果表明,在短程硝化反硝化工艺中,采用较高曝气量,并且在曝气过程中用DO和pH值作为过程控制参数是可行的。
畜禽养殖废水的混合处理工艺
邓仕,,郑仁宏,周鹏,张小平
环境工程 , 2006, DOI: 10.13205/j.hjgc.200604010
Abstract: 针对畜禽养殖场废水的“三高”特点,即CODCr高、氨氮高、SS高,应用气浮ABRCASS湿地及生态塘为主体的废水处理工艺。结果证明,该工艺处理后的废水CODCr、氨氮、SS等指标都能达到(GB89781996)一级排放标准。
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