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In this study, copepoda and its resting eggs in shrimp culture ponds were detected using PCR dot-blot hybridization and nest-PCR for the presence of WSSV. The results showed that WSSV positive cases were detected in copepoda from egg to adult, and the positive copepoda appeared earlier than cultural shrimp in ponds.

1。本研究利用PCR-斑点杂交和巢式PCR法检测野外发病对虾养殖池塘中桡足及其休眠卵,以及由这些休眠卵孵化出的幼体携带病毒情况,发现桡足由卵到成体各阶段中均有阳性个体,而且池塘中在春天放养对虾苗前桡足就出现阳性个体。

GroupⅠ, the peridotite inclusions with typical pyrolite textures (metamorphic and deformation textures);(2) GroupⅡ, the peridotite and olivine-pyroxenite inclusions with metamorphic and deformation textures and overlaid mineral reaction textures or relic magmatic crystalline textures or/and cumulate textures; and (3) GroupⅢ, the pyroxenite inclusions with crystalloblastic texture and cumulate textures.

深源岩石包体的岩相学表明,鲁西深源岩石包体具有三种结构型:①具有典型地幔岩结构的橄榄岩岩石包体;②具有变质变形结构,并叠加有矿物反应结构以及残留有岩浆结晶结构的橄榄岩、橄辉岩岩石包体;③具有变晶结构或堆晶结构的辉石岩包体。

Cucumber, melon and watermelon are important Cucurbita crops. The high density Cucurbita genetic map will facilitate the Cucurbita breeding.

黄瓜、甜瓜和西瓜是重要的葫芦科瓜作物,构建高密度的葫芦科瓜分子遗传图谱研究将有助于提高瓜作物的育种水平。

Meanwhile Cumacea mainly distributed in the Taiwan Strait and its adjacent sooth waters. Iphinoe tenera and Heterocuma sarsi are common species of Cumacea in the East China Sea because they occurred in three seasons with relatively high abundance and occurrence frequency. Leueon sp.

浮游涟虫主要分布在台湾海峡和东海南部海域浮游涟虫有4种,细长涟虫和萨氏异涟虫在3个季节出现,丰度和出现率较高,是东海涟虫的常见种;无尾涟虫Leueon sp。

According to biological classification, fly belongs to cyclorrhapha, diptera, insecta. It has various species, which can be divided into two major categories: house fly and non-house fly.

苍蝇的生物学分属于昆虫纲、双翅目、环裂亚目,它的种很多,有住区蝇和非住区蝇,与卫生有关的住区蝇不多。

In volatile oil of processed Cyperus, the contents of alkene and ketone compounds are more than those in unprocessed Cypreus, while the content of acid compounds is less than that of unprocessed Cypreus.

醋炙香附挥发油的主要成分中各种烯、酮化合物含量高于生品中的含量,而酸化合物的含量低于生品中的含量。

β-lactam antibiotics is still the most common drug causing DAIN in China, which is followed by autipyretic anelgesics.

目前导致DAIN的药物仍以β内酰胺抗生素最为常见,其次为解热镇痛药物,喹诺酮抗生素相关性AIN较前增多。

We divided the web-based biology course in the normal university to three types: depictive course, quantity course and experimental course; take some assumptions and suggestions to the design of the different web-based course, and illustrate by example.

根据高等师范院校生物系所设置的生物学课程内容的不同特点和表现方式,可将它们划分为三:描述课程、数量课程和实验课程;对不同型网络课程的设计制作提出了设想和建议,并举例加以阐述。

This task mostly synthesis dialkyl disulfonic sodium diphenyl methane and dialkyl disulfonic sodium diphenyl aether gemini surfactants.

本论文合成了二苯甲烷与二苯醚双烷基双磺酸基阴离子双子表面活性剂。

According to the structure and synthesis character of the geminal dinitro energetic plasticizers,the current situation about the synthesis,the property and application of geminal dinitro aldehyde acetals,esters and ether energetic plasticizers is summarized with 21 references.

从偕二硝基含能增塑剂的结构和合成特点出发,综述了偕二硝基缩醛、酯及醚等含能增塑剂的合成、性能及应用研究现状。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力