查询词典 freshwater mussel

A freshwater fish of the family Anabantidae, native to Africa and southeast Asia and including the gourami and climbing perch.

攀鲈一种攀鲈科淡水鱼，产于非洲和东南亚，包括丝足鱼和攀鲈

Very small European freshwater fish common in gravelly streams.

常见于多碎石的溪流中非常小的欧洲淡水鱼。

The Australian grayling, a freshwater fish, graduated from "vulnerable" to "near threatened" thanks to fish ladders at dams and other protection measures.

澳大利亚的一种淡水鱼，从"弱势"到"接近濒危"，幸亏在水坝的鱼梯和其他保护措施。

The different fishes which are employed in the present studies are wild-type salmon, cultured salmon of freshwater and seawater, sea perch and fat greenling. The complete CT gene sequences of salmons are obtained by PCR amplification. The partial CT sequences of sea perch and fat greenling are obtained by in vitro cloning PCR method. Alignment of obtained CT sequences with other fish CT shows that CT appears to be well conserved among the same family. And the relative in taxonomy is far away, the similarity of different fish CTs is low. On the contrary, the closer the relative in taxonomy is, the higher the similarity of different fish CTs is. The sCT is expressed in pGEX-4T-X by recombinant form . We also succeed in the research of sCT expression alone by expression PCR. In addition, sCT antiserum is obtained using GST-sCT as antigen, and the high titer is tested by double immunodiffusion. In the rat bioassay, administration of 50 μg recombinant protein evoked significant hypocalcemia at 1 h after the data are analyzed by t-test.

本文用PCR方法克隆了野生鲑鱼、养殖鲑鱼的降钙素基因，并应用体外克隆PCR的方法首次克隆出鲈鱼、六线鱼降钙素的部分基因序列，通过对克隆的降钙素序列的比较研究，结果显示同一科的鱼降钙素序列保守性较高，同时，根据降钙素的部分氨基酸序列进行了降钙素相似性的比较研究，结果显示在分类学上，分类地位较远的鱼，其降钙素相似性较低，分类地位越接近的鱼，其降钙素相似性越高；我们利用谷胱甘肽S-转移酶(Glutathions S-transferase，GST)融合表达载体pGEX-4T-X对克隆的鲑鱼降钙素基因进行了融合表达研究，应用表达PCR的方法对降钙素基因的独立表达进行了初步的研究探索，并将纯化的融合蛋白作为抗原，获得了高效价的兔抗鲑鱼降钙素免疫血清；生物活性研究表明，大肠杆菌表达的融合蛋白具有显著的降血钙作用。

Among them, Yuan Yu, and freshwater grouper world-renowned reputation of the beautiful and rich land of plenty.

其中，元鱼和桂花鱼中外闻名，被誉为美丽富饶的鱼米之乡。

The aim of this study was to investigate the effects of nonylphenol and nonylphenol monoethoxylate (NP1EO) on hemocytes of the giant freshwater prawn, including phenoloxidase activity, respiratory burst and hemocyte viability, by means of in vitro exposure experiments.

本研究利用体外处理试验，探讨壬基苯酚和壬基苯酚单乙氧基醇化物(NP1EO)对淡水长臂大虾血球细胞的影响，包括酚氧化酵素活性、呼吸释放量和血球的活存。

The research covers Antarctic wildlife biology, browsing ecology, evolutionary biology, fish biology, freshwater ecology, herpetology, marine ecology, ornithology, reproductive physiology.

研究内容涵盖南极野生动物生物学、放牧生态学、进化生物学、鱼类生物学、淡水生态学、爬虫学、海洋生态学、鸟类学、繁殖生理学等。

This paper discussed the methods of pretreatment for the FCM to detect the heterotrophic bacteria both in freshwater and marine sediments.

论文对FCM测定沉积物中异养细菌的前处理方法进行了探讨，实验同步考虑了淡水及海洋沉积物。

Lake elevation of 1966 meters, is the famous highland freshwater lake.

湖面海拔1966米，是著名的高原淡水湖。

The freshwater cnidarian Hydra was first described in 17021 and has been the object of study for 300 years.

亨廷顿舞蹈症是一种遗传性脑病，症状表现为舞蹈性运动以及认知和行为障碍。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。