7 resultados para GUERRA DE COREA - 1950-1953 - PARTICIPACIÓN COLOMBIANA

em Chinese Academy of Sciences Institutional Repositories Grid Portal


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对1950,1953,1955,1957和1990年在湖北省武昌县、黄陵县、江陵县、武汉市和江苏省无锡市采集的藻类标本进行分类。鉴定表明,它们是栅藻属的3个新种:纤维藻形栅藻,球刺栅藻和湖生栅藻。模式标本保存于中国科学院水生生物研究所藻类标本室(IHBA)。

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<正> 1950年春季,作者在上海江湾发现乌鳢鳍中有许多线虫寄生,以后在1953年至1956年期间,在浙江吴兴的河流和湖泊中所产乌鳢鳍中又找到同样的线虫,此后在长江流域各处都有发现。经过研究,确定为藤本嗜子宫线虫(Philometra fujimotoi Furuyama,1932)。在我国为首次报告。

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饶钦止和沈国华等人于1950,1952,1953,1955和1990年自湖北、江苏、广西和黑龙江等地采得标本,经鉴定表明,它们为中国绿球藻目(Chlorococcales),分隶于6属的8个新种和4个新变种。模式标本保存于中国科学院水生生物研究所藻类标本室(HBI)。

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<正> 我們從1950年秋季便開始注意到“鑿石蟲”這類動物的問題。但是因為那時所看到的範圍較小,只是在青島、烟台和石島附近發現了生活在風化了的岩石(辉綠岩)中的兩種。當時感到它們的為害程度不会大,便没有予以十分重視。1962年10月築港工程公司提出了“鑿石蟲”在新港的為害情况,並在12月間將材料送給我們。這些材料都是生活在很堅硬的石灰石里面,與過去在

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<正> 中國科学院水生生物研究所是在1950年春成立的。它的具體方針和任務,無疑地要把生物科学的研究,結合到水生生物生產的需要中去。我們人民的偉大祖國在海洋方面,有長達一萬一千餘公里的海岸線,寬濶到四十三萬六千餘平方浬的漁場面積;在淡水方面只估計中南華東兩區,就有一億畝以上的天然淡水面積,而且中國勞動人民對池塘養魚所累積下来的经驗,已有兩千年以上悠久的歷史當為其他國家所不及。但在解放以前,中國漁民在反動统治階級的压迫、封建的剝削、帝國主義的侵略之下,不可能,而且不容許去儘量開發祖國無可限量的水產資源,水產

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The complete mitochondrial (mt) DNA sequence was determined for a ridgetail white prawn, Exopalaemon carinicauda Holthuis, 1950 (Crustacea: Decopoda: Palaemonidae). The mt genome is 15,730 bp in length, encoding a standard set of 13 protein-coding genes, 2 ribosomal RNA genes, and 22 transfer RNA genes, which is typical for metazoans. The majority-strand consists of 33.6% A, 23.0% C, 13.4% G, and 30.0% T bases (AT skew = 0.057: GC skew = -0.264). A total of 1045 bp of non-coding nucleotides were observed in 16 intergenic regions,,including a major A+ T rich (79.7%) noncoding region (886 bp). A novel translocation of tRNA(Pro) and tRNA(Thr) was found when comparing this genome with the pancrustacean ground pattern indicating that gene order is not conserved among caridean mitochondria. Furthermore, the rate of Ka/Ks in 13 protein-coding genes between three caridean species is Much less than 1, which indicates a strong Purifying selection within this group. To investigate the phylogenetic relationship within Malacostraca, phylogenetic trees based oil Currently available malacostracan complete mitochondrial sequences were built with the maximum likelihood and Bayesian models. All analyses based oil nucleotide and amino acid data strongly support the monophyly of Decapoda. The Penaeidae, Reptantia, Caridea, and Meiura clades were also recovered as monophyletic groups with Strong Statistical Support. However, the phylogenetic relationships within Pleocyemata are unstable, as represented by the inclusion or exclusion of Caridea. (C) 2009 Elsevier B.V. All rights reserved.