Farmers use the financing to buy seeds, fertilizer and other crucial inputs. As part of the bargain, farmers must agree to protect more than 35 per cent of their land from deforestation. “The RCF ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Sino Group ('the Group') is pleased to announce that Sino Land Company Limited ('Sino Land') has been recognised as one of the ... with the highest 'A' score awarded exclusively to companies ...

迄今为止的演示仅限于两个模之间的纠缠。研究者报告了在集成光学芯片上连续可变八模纠缠的确定性产生。该芯片提供了一个量子微梳，可以产生低于阈值的多模压缩真空光学频率梳。他们验证了八模态的不可分性，并通过违反van Loock–Furusawa标准，证明了数百兆赫边带频率上的超模多部纠缠。

随着 2025 年到来，全球科学界都在翘首以盼一系列重大科研进展。英国《自然》网站于 2024年12 月 17 日发布了 2025 ...

▲摘要： 众多昆虫群体的数量下降已被记录下来，并且，这一情况的潜在后果是严重的。蝴蝶是最广受调查的昆虫类群，然而对其的分析往往受限于地理范围或依赖于单一监测项目的数据。利用来自35个监测项目的超过76000次调查中记录的1260万只蝴蝶的数据，我们描绘了美国本土蝴蝶总体及特定物种的丰度趋势。