研究动物

During experiment, LC50 of bleaching powder in 24, 48, 72, 96, 120, 144 and 168 hours were get; LC50 of trichloroisocyanuric acid powder in 24, 48, 72 and 96 hours were also get.

试验以洱海流域的背角无齿蚌为研究对象，确定常用鱼药：漂白粉、氯杀宁对湖泊大型底栖动物背角无齿蚌的毒性影响。

Perhaps, but according to neuroscientist Jaak Panksepp of Bowling Green State University, some animals do laugh.

可能吧，但按照Bowling Green 州立大学的神经学家Jaak的研究，有些动物真的会笑

These responses are tested in different extents using the brachiopod fossils Rhynchospirifer and Stringocephalus, as well as their surrounding rocks.

上述认识不同程度地在Rhynchospirifer属和Stringocephalus属为代表的腕足动物及其围岩的研究中得到验证。

Has long been engaged in brachiopod fossils and Carboniferous, Permian stratigraphy.

长期从事腕足动物化石和石炭纪、二叠纪地层研究。

The behavioral data robustly suggested that the 3 alkanols synergistically created a female attractant odor or male pheromone in the budgerigar and that bird uropygial glands have broader implications in sexual behavior than previously known.

张健旭研究组在性信息素，即费洛蒙研究方面获患了多个成果，曾以以11页的篇幅，在国际上首次论述了比小鼠更与人类接近的模式动物——大鼠的性信息素成分。

The physical and chemistry character of sodium butyrate, its function in gastrointestinal and application in animal production were mainly stated in this article.

本文综述了丁酸钠的理化性质、营养生理功能和其在动物生产中的应用，并简要展望了丁酸钠研究和应用的前景。

Photograph by Joel Sartore; photographed at the Wild Canid Survival and Research Center, Eureka, Missouri

照片由Joel Sartore 在密苏里州尤里卡的野生犬科动物生存与研究中心拍摄。

Hotograph by Joel Sartore; photographed at the Wild Canid Survival and Research Center, Eureka, Missouri

照片由Joel Sartore拍摄于密苏里尤里卡的野生犬科动物的生存与研究中心。

Michael Noonan, a professor of animal behavior at Canisius College in Buffalo, N.Y., made the discovery by accident while studying orca acoustics.

纽约大学水牛城分校肯尼休斯学院的动物行为教授麦克。诺南在研究杀人鲸的声音时，无意中有此发现。

And, studies in experimental animal models and cultured human cells demonstrate that E2 and E1 are carcinogenic.

在动物实验模型和人体细胞培养的研究呈现出 E2和 E1为致癌物质。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。