2025-06-23 04:52:34动物植物
重力逆转:微粒多孔颗粒如何在海洋“雪暴”中沉降更快

颠覆传统认知的是,研究人员发现,在密度变化的类海洋流体中,由于吸收盐分的特殊机制,微小的多孔颗粒下沉速度反而比大颗粒更快。科学家通过分层水柱中3D打印琼脂模型进行的精密实验证实:孔隙率和颗粒形态是决定沉降速度的关键因素。这一发现将彻底改变我们对碳循环、微塑料行为的理解,甚至影响海洋碳捕获策略的设计。

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2025-06-10 01:34:45动物植物
水下视频显示,受保护的南极海洋生物受到锚泊船只的威胁

Ships operate in every ocean, and even the most remote waters aren't off-limits. When they anchor, they leave behind a footprint. Anchoring cannot only disrupt marine life but may also damage undersea cables or pipelines, disrupt communication and cu

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2025-06-09 05:28:11动物植物
珊瑚艺术:揭示珊瑚礁对高温海洋适应性的秘密

When Victoria Glynn came to Panama to study the effects of extreme ocean temperatures on coral reefs at the Smithsonian Tropical Research Institute (STRI) as a pre-doctoral fellow in professor Rowan Barrett's lab at McGill University, she drew corals

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2025-06-09 05:15:55动物植物
即使是大黄蜂女王也需要私人时间:研究揭示了产卵周期中令人惊讶的中断

Some queens don't rule nonstop. A new study from the University of California, Riverside shows that even bumble bee queens, the sole founders of their colonies, take regular breaks from reproduction—likely to avoid burning out before their first work

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2025-06-09 05:03:43动物植物
使用新的尖端eDNA系统发现珊瑚礁丰富的生物多样性

Just a few meters beneath the clear, blue waters of Okinawa, reef-building corals known as Scleractinia have quietly lived for centuries. Slowly, layer by layer, they have constructed intricate, rigid structures made of calcium carbonate to form the vibra

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2025-06-09 04:51:49动物植物
日本首次命名的翼龙揭示了古代飞行爬行动物

A team of researchers from Japan, China, and Brazil have discovered a new species of pterosaur from the Late Cretaceous of Japan, marking the first time a pterosaur has been named based on body fossils found in the country.

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2025-06-09 04:40:14动物植物
工程油料作物产生高水平的强效抗氧化剂

In a major step forward for sustainable pigment production, scientists have successfully engineered the oilseed crop Camelina sativa to produce high levels of astaxanthin—a valuable red antioxidant used to color farmed salmon and shrimp—using plant-derive

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2025-06-09 04:25:23动物植物
氨基酸作为RNA产生的催化剂

The question of how life could have emerged is one of the most long-standing mysteries in science. In a new study, the laboratory of LMU Professor Dieter Braun has uncovered an unexpected form of molecular collaboration between the fundamental components

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2025-06-09 04:13:08动物植物
揭示细胞如何分配空间为新的生长让路

Picture a living cell as if it were a city. If you were the urban planner for this (very little, very alive) city, one of the things you would have to decide is how to allocate space for different functional uses.

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2025-06-09 04:00:43动物植物
海带林的崩溃改变了缅因湾的食物网和能源动态

While kelp forests persist along northern Maine's rocky coast, kelp abundance has declined by as much as 80% on the southern coast in recent decades. In its stead, carpet-like turf algae have moved in.

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2025-06-09 03:47:20动物植物
新研究量化了鱼类屠宰的痛苦和福利解决方案的成本效益

A new study in Scientific Reports reveals the hidden pain of fish during slaughter and offers practical solutions to improve their welfare. Focusing on rainbow trout, the research quantifies pain in air asphyxia—a common slaughter method—using the innovat

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2025-06-09 03:36:05动物植物
濒危的山地驯鹿具有与地衣饮食相关的独特肠道微生物

Endangered mountain caribou in British Columbia possess a unique gut microbiome in late winter when they feed on tree lichens, a finding that could guide caribou recovery efforts, according to a new study from the University of Alberta.

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