2024-06-29 23:23:39动物植物
研究表明,在奶牛场,咬人的苍蝇是导致奶牛乳腺炎的细菌库

Bovine mastitis, which affects cows, leads to reduced milk production and can be fatal if left untreated. The USDA National Animal Health Monitoring System has reported cases in 99.7% of all dairy operations in the U.S., making it the most prevalent disea

阅读全文
2024-06-29 23:11:17动物植物
科学家开发新一代DNA测试,应用广泛

A research group led by Dr. Edward Curtis has developed two new types of catalytic DNA molecules (deoxyribozymes) that can reveal the presence of target molecules through fluorescence or color. Several types of sensors were also developed, one was used to

阅读全文
2024-06-29 22:56:55动物植物
浮游生物研究人员敦促他们的同事将其混淆

Comprising the base of the food web, plankton are extremely important to marine ecosystems. However, there is still much to be discovered about these organisms, and that's especially true for mixoplankton.

阅读全文
2024-06-29 22:43:49动物植物
高速互联网连接到更多提供农业旅游的农场

The availability and adoption of high-speed broadband appears to boost the number of farms offering agritourism activities, according to a new study led by Penn State researchers. Their findings, the researchers said, bolster the argument for expanding br

阅读全文
2024-06-29 22:33:43动物植物
研究人员绘制了果蝇控制翅膀和腿部运动的神经网络图

Scientists at the University of Washington and Harvard Medical School, in collaboration with the ESRF, have discovered the neural circuits that coordinate leg and wing movements in the fruit fly (Drosophila). This could lead to a better understanding of h

阅读全文
2024-06-29 22:20:03动物植物
我们的研究表明,数学让寻找蝙蝠栖息地变得容易多了

Finding bats is hard. They are small, fast and they primarily fly at night.

阅读全文
2024-06-29 22:06:33动物植物
在印度洋作业的工业船队关闭监控系统,未履行报告义务

Industrial fleets from top fishing countries operating in the Indian Ocean and targeting export-market species such as tuna and squid are likely to disable monitoring systems to fish more than allowed and evade authorities, new research has found.

阅读全文
2024-06-29 21:54:34动物植物
研究人员发现线粒体转移如何恢复心肌

Transferring mitochondria from a patient's healthy skeletal muscle to damaged, ischemic heart tissue has been shown to restore heart muscle, increase energy production, and improve ventricular function.

阅读全文
2024-06-29 21:42:14动物植物
科学家确定连接蛋白分子允许细胞相互发送信息

Researchers have gained new knowledge of how drugs bind to connexin molecules. These molecules form channels that allow neighboring cells to send direct messages to one another. Dysfunctions of these channels are involved in neurological and cardiac disea

阅读全文
2024-06-29 21:28:44动物植物
蝴蝶鳞片形成的最初时刻会发生什么

A butterfly's wing is covered in hundreds of thousands of tiny scales like miniature shingles on a paper-thin roof. A single scale is as small as a speck of dust, yet surprisingly complex, with a corrugated surface of ridges that help to wick away water,

阅读全文
2024-06-29 21:16:54动物植物
科学家发现下一代可编程基因组设计系统

In a leap forward for genetic engineering, a team of researchers from the Arc Institute have discovered the bridge recombinase mechanism, a precise and powerful tool to recombine and rearrange DNA in a programmable way.

阅读全文
2024-06-29 21:05:50动物植物
重写armadillo家谱:一个新物种,加上得克萨斯州哺乳动物的更名

While their scaly armor and long claws look vaguely reptilian, armadillos belong to the same group of mammals as sloths and anteaters. There are nearly two dozen species of armadillos, from six-inch long "pink fairies" to giant armadillos that m

阅读全文
 3154   首页 上一页 169 170 171 172 173 174 175 176 177 178 下一页 尾页