查询词典 Americana

After two-cluster testing,branch length testing and relative rate testing ,two sequences(Melantitta nigra and Aythya americana) of 15 Cty b sequences were deleted because thek evolutionary rate were heterogeneous. The divergence between Anseriformes and Galliformes was chosen as an anchor point. Nucleotide sequence and amino acid sequence of 13 sequences data set was used to calibrated Anatidae molecular clocks. The results indicated that amino acid sequence is better than nucleotide sequence when divergence time is calculated with two kinds of sequences. The reliable divergence time of Anatidae were estimated with """"1+2TiTv"""" model.

经过二簇检验、分枝长度检验和相对速率检验，删除2条速率不恒定的序列后，用剩余的13条序列，以鸡形目与雁形目的分歧时间(89.8MYA)为锚定点，用顺序标定法标定鸭科鸟类分子钟的分析结果表明，用&1+2TiTv&分析得到的鸭科鸟类的分歧时间比较可靠；氨基酸序列用泊松校正模型和Γ模型估计的分类单元间的分歧时间则比较一致，表明氨基酸序列更适合用于鸭科鸟类分子钟的研究；用同一基因标定分子钟时，较长序列得到的结果标准误比较小；与核苷酸序列相比，氨基酸序列更适于用作分子钟的标定。

Using sucrose-gap recordings of synaptic transmission across the cockroach cercal nerve-giant fiber synapse,it was observed that the excitatory postsynapic potential was blocked by 0.1 g/L Celangulin Ⅳ after 72 min of medication.

甘露醇间隙法对美洲大蠊（Periplaneta americana中枢神经离体标本兴奋性突触后电位（EPSP的测定表明，质量浓度为0.1 g/L的苦皮藤素Ⅳ在用药后72 min阻断了EPSP。

Donal Hinely is certainly a rising star in the Americana music scene, so keep an eye out for him; one can only hope that the best is yet to come.

多纳尔Hinely无疑是一颗冉冉升起的明星在美国的乡存民谣音乐舞台，所以留意他的人们只能希望，最好的尚未到来。

Here we show that American coots, Fulica americana, can recognize and reject parasitic chicks in their brood by using learned cues, despite the fact that the hosts and the brood parasites are of the same species.

被巢寄生鸟当作目标的很多鸟类已学会拒绝寄生鸟的卵，但它们却很少有排斥寄生鸟的幼鸟的--如果这些幼鸟得以孵化出来的话，即便这些幼鸟与它们自己的幼鸟在大小上的差别显而易见。

Aimed at the study of Lauraceae system classification in domestic and overseas,genetic diversity and genetic variation between Cinnamomun micranthum Hayata natural populations and Ex-situ conservation poputations and relationship among Its Close Relative Species of Cinnamomum camphora Presl,Cinnamomum burmannii(C.G.etTh.Nee) Bl,Phoebe bournei Yang. Litsea subcoriacea Yang et P.H.Huan. Neolitsea aurata Koidz,Lindera communis Hemsl and Persea Americana Mill.were studied by inter-simple sequence repeats molecular marker.The research aimed at genetic variation between Cinnamomun micranthum Hayata populations,so that can offer the molecular theoretic and practical method for conservation and utilization of Cinnamomun micranthum Hayata populations.

针对目前国内外对樟科植物系统分类的研究现状，本研究采用ISSR分子标记技术对樟科沉水樟天然居群和迁地保护居群的遗传多样性进行研究，从分子水平上分析沉水樟种群的生态遗传及其遗传变异规律；同时利用ISSR分子标记技术比较沉水樟及其近缘种香樟、阴香、闽楠、桂北木姜子、新木姜子、香叶树、鳄梨在分子水平上的亲缘关系，揭示这些树种在樟科植物系统进化中的作用与地位，探讨沉水樟及其近缘种的遗传多样性及其分化格局，为樟科植物的系统分类提供分子水平的依据。

The biological characteristics of Macrophoma kawatsukai Hara causing leaf spot disease of Prunus americana were investigated in vitro.

对布朗李叶枯病菌生物学特性研究表明，该菌最适生长和产孢的培养基为布朗李果汁。

The product of various drug resistant cockroaches are still valid, and Periplaneta americana, Blattella germanica effects are excellent.

该产品对各种不同药品产生抗性的蟑螂仍然有效，对美洲大蠊，德国小蠊效果都极佳。

The results showed that the values of LT50 against Blattella germanica and Periplaneta Americana were 1.61 d and 1.38 d respectively.

结果表明，0.5％SIOC-I-013对美洲大蠊和德国小蠊的半数致死时间LT∞分别为1，61d和1.38d；1％和0.5％SIOC，I.013在药后14d对红火蚁工蚁的减退率均达到98，0％以上，浓度为1000mg／L的SIOC-I-013对台湾乳白蚁的半数致死时间LT50为3600min。

Results The numbers of female and male of Periplaneta fuliginosa were 31 strips and 29 strips; the numbers of female and male of Periplaneta Americana were 30 strips and 28strips; the numbers of female and male of Blattella germarica were 28 strips and 25 strips.

结果黑胸大蠊的蛋白条带数目♂为29条，♀为31条；美洲大蠊的蛋白条带数目♂为28条，♀为30条；德国小蠊的蛋白条带数目♂为25条，♀为28条。

The receptors of Periplaneta Americana compared with those ofAnomotaenia amaurornisus

苦恶鸟异带绦虫和美洲大蠊感受器形态比较

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了