Ankara, July 7 (UNI) Five Turkish soldiers were killed after being exposed to methane gas during a search operation in a cave in northern Iraq, the Turkish Defence Ministry said yesterday.

研究团队于2019-2023年在青藏高原多年冻土区开展了系统的监测工作。结果表明，冰封期水体中溶解的甲烷浓度显著高于无冰期（中位数分别为2.61 μmol/L和 0.88 μmol/L），同一湖塘的甲烷浓度甚至比无冰期可高出近百倍，这源于冰下厌氧环境及冰层的阻隔，促使甲烷持续生成并累积。不同植被类型下冰封期与无冰期热融湖塘水体中溶解的甲烷浓度呈正相关，且与流域内有机碳含量紧密相关。基于连续观测数据 ...

UNEP’s International Methane Emissions Observatory (IMEO), alongside the Oil and Gas Decarbonization Charter, Carbon Limits and Azule Energy, will host a capacity building workshop on methane ...

地球是一个奇迹环境｜美国将国家地理中文网设为星标方能收到正常推送在北达科他州芒特赖尔县(Mountrail County, North Dakota)的巴肯油田(Bakken Oil ...

催化剂一般是指通过降低反应的活化能，使原本需要高温高压的反应可以在温和条件下进行。催化反应是现代工业的基础，约90 %以上的化工生产必须依赖于催化剂才能进行[1]。例如哈伯法工业合成氨依赖于铁基催化剂，能将反应温度从1500 ℃以上降至450 ℃左右 ...

Docosyl methane sulfonate Petroselaidyl methane sulfonate Palmitelaidyl methane sulfonate Palmitoleyl methane sulfonate Dodecyl methane sulfonate Hexadecyl methane sulfonate Erucyl methane sulfonate ...

参议院以51票赞成、50票反对通过该法案。唐纳德·特朗普总统与共和党议员正着手废除2022年前总统乔·拜登执政时期民主党通过的气候法案。在三位共和党参议员投反对票后，副总统詹姆斯·戴维·万斯（JD Vance）投出关键票，打破僵局。

According to a 2025 China biomass energy industry report, the country's installed biomass power capacity had reached 45.99 ...

According to a 2025 China biomass energy industry report, the country's installed biomass power capacity had reached 45.99 million kilowatts by the end of 2024, with total power generation hitting 208 ...

Volume 642 Issue 8068, 19 June 2025https://www.nature.com/nature/volumes/642/issues/8068Editorial 社论In science’s new era, open and transparent cooperation remains key《科学新时代中，开放透明的合作仍是关键》Transparent pe ...