997 resultados para 16-163
Resumo:
The Trichoptera collected in Sri Lanka by the Austrian Indo-Pacific expedition in autumn and winter 1970 (larvae and adults) are evaluated systematically and ecologically. The following new species are described: Pseudoneureclipsis starmuehlneri, P. maliboda (Polycentropodidae), Oecetis belihuloya (Leptoceridae), and Helcopsyche sri lanka (Helicopsychidae). Helicopsyche ceylanica Brauer 1866 is re-described. Several types of larvae and cases of Hydropsyche (Hydropsychidae), Ceylanopsyche (Sericostomatidae) and Helicopsyche are described or at least roughly characterised. According to the larval characters the genus Ceylanopsyche seems to belong to Sericostomatidae s. str.
Resumo:
Multidirectional chromosome painting with probes derived from flow-sorted chromosomes of humans (Homo sapiens, HSA, 2n = 46) and galagos (Galago moholi, GMO, 2n = 38) allowed us to map evolutionarily conserved chromosomal segments among humans, galagos, a
Resumo:
目的 探讨B2 肾上腺素受体(B2AR) 16、27 位基因多态性与夜间哮喘表现型的关系。方法 以最大呼 气流速(PEFR ) 为标准, 将49 例哮喘患者分为夜间哮喘组(25 例) 和非夜间哮喘组(24 例)。用PCR 产物直接测序确 定B2AR 16、27 位基因型分布, 以及分析两个位点各种基因型与两组病例PEFR、第一秒用力呼气量(FEV 1) 以及用药 情况之间的关系。结果 以PEFR 为标准, 夜间哮喘组PEFR 在夜间平均下降33. 6% , 非夜间哮喘组下降7. 0% , 二 者差异显著(P < 0. 001)。夜间哮喘组和非夜间哮喘组(白天) 基础FEV 1 分别为73. 7 % 和85. 8 % , 也具有显著性差 异(P < 0. 001)。Gly16 的等位基因频率在夜间哮喘组56. 0% 明显较非夜间哮喘组22. 9% 高(P < 0. 05) , Gly16 集中 分布于夜间哮喘组。27 位点的多态性在两组间无显著性差异。结论 B2AR Gly16 基因型与夜间哮喘可能有关系。
Resumo:
There is no generally accepted picture of where, when, and how the domestic dog originated. Previous studies of mitochondrial DNA (mtDNA) have failed to establish the time and precise place of origin because of lack of phylogenetic resolution in the so fa
Resumo:
Overview from member countries of oceanography and large scale dynamic processes affecting the Bay of Bengal