2024-12-20 17:00:44动物植物
新的“分子动画书”让研究人员对核糖体运动有了最好的了解

At one time or another, most of us have played with a flipbook, using our thumbs to rapidly flip a series of pictures to create an illusion of movement.

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2024-12-20 16:48:24动物植物
糖溶液配合抗生素治疗奶牛感染

A concentrated sugar solution could be just as effective as antibiotics at treating a common infection in dairy cows, according to a new study led by researchers at Penn State. The results were recently published in the journal Frontiers in Veterinary Sci

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2024-12-20 16:37:05动物植物
发现卵子对精子线粒体的免疫样攻击可能有助于生育

Within minutes of fertilization, the egg of a fruit fly becomes a scene from the battle of the sexes. The egg attacks and destroys the cellular "power plants" (mitochondria) from the sperm that had fertilized it, so that only its own mitochondri

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2024-12-20 16:23:18动物植物
研究表明,苍蝇比蜜蜂更容易受到气候变化的影响

Despite their reputation as buzzing nuisances, flies serve a critical role as some of the Earth's most prolific pollinators—and new research led by Penn State scientists suggests they are increasingly at risk due to rising global temperatures.

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2024-12-19 18:05:11动物植物
巴西岛上发现死于狂犬病的水豚,强调了监测病毒的必要性

Three capybaras (Hydrochoerus hydrochaeris) died from rabies on Anchieta Island in the municipality of Ubatuba, São Paulo state, Brazil, between December 2019 and January 2020. One was found dead, and two exhibited hindlimb paralysis before dying. Analysi

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2024-12-19 17:54:27动物植物
问答:生命科学中的人工智能——为什么模型在实践中经常失败

Artificial intelligence (AI) based on machine learning offers opportunities for the life sciences. However, problems often arise in practice. One cause is data leakage, the illicit spillover of information from the training to the test data.

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2024-12-19 17:43:59动物植物
研究发现水生植被清除有益健康和经济

Turning aquatic vegetation near agricultural land into compost simultaneously eradicates habitat for disease-carrying snails while improving agricultural output and increasing incomes in northern Senegal, Cornell researchers have found.

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2024-12-19 17:33:56动物植物
被光蒙蔽:城市照明对海滩昆虫的影响

A group of international scientists—including two from the University of Plymouth and Plymouth Marine Laboratory (PML)—has developed a new method for examining the effects of artificial light at night (ALAN) on two sandy beach crustacean species.

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2024-12-19 17:20:53动物植物
巨型病毒编码细胞生命蛋白质制造机制的关键片段

Researchers at the University of Hawai'i at Mānoa have discovered that a virus, FloV-SA2, encodes one of the proteins needed to make ribosomes, the central engines in all cells that translate genetic information into proteins, the building blocks of life

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2024-12-19 17:07:16动物植物
加利福尼亚州记录的食肉松鼠

A ground squirrel with cheeks stuffed with nuts, seeds or grains is a common sight. But a new study provides the first evidence that California ground squirrels also hunt, kill and eat voles. The study, led by the University of Wisconsin-Eau Claire and Un

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2024-12-19 16:54:06动物植物
研究揭示了坏细菌如何引发痛苦的肠道收缩

After a meal of questionable seafood or a few sips of contaminated water, bad bacteria can send your digestive tract into overdrive. Your intestines spasm and contract, efficiently expelling everything in the gut—poop and bacteria alike.

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2024-12-19 16:39:18动物植物
建立骨干:科学家在实验室中重建人体的“GPS系统”

Scientists at the Francis Crick Institute have generated human stem cell models which, for the first time, contain notochord—a tissue in the developing embryo that acts like a navigation system, directing cells where to build the spine and nervous system

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