Shifting research focus comes with the risk of reduced impact An analysis of millions of scientific papers and patents shows that the further a researcher or inventor moves from their previous work, the less cited their latest work will be. ...
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参考文献:Kozlov M. Will the FDA change how it vets drugs following the Alzheimer's debacle? [published online ahead of print, 2022 May 13]. Nature. 2022;10.1038/d41586-022-01316-8. doi:10.1038/d41586-022-01316-8
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本文翻译自NATURE [Seeds of change : Nature News & Comment] Nature 520, 131–132 (09 April 2015) doi:10.1038/520131b 美国的植物育种公司Cibus自豪的推出了第一个通过精确基因编辑技术得到的作物,这是一种抗除草剂的油菜。 这种作物将在今年春天于美国种植,同时这个公司已经得到了在加拿大种植的许可。这个...
The pace of modern culture 论文地址： https://www.nature.com/articles/s41562-019-0802-4 与普遍认为人类文化发展非常迅速的看法相反，研究表明现代文化的演化速度与许多动物种群相似。通过使用时间序列分析法，论文得出大部分现代文化是由某种稳定力或方向力，或二者共同作用而形成的，它们分别在一定程度上调节着...
如果是这样,当代的高升温率意味着超过这些阈值几乎是不可避免的,这被广泛认为意味着我们现在致力于遭受这些临界事件。在这里,此研究中表明这种假设可能是有缺陷的,特别是对于快速变化的气候中缓慢发生的临界要素(如大西洋经向翻转环流的崩溃)。最近发展的理论表明,如果过冲时间与临界要素的有效时间尺度相比很短,则可能...
气温观测资料是气候变化研究的基石,全球范围内最早的气温观测可以追溯到17世纪末的苏黎世、布拉格等城市,但是由于观测的站点非常少,因此很难用到区域和全球气候的研究中。HadCRUT4是目前常用的全球表面温度的数据集,该数据集是从1850年开始。由于HadCRUT4数据筛选条件较为严格,因此在19世纪末到20世纪初存在较多的缺测值...
of change, defying simple predictions of earlier springs, later autumns and stronger changes at higher latitudes and elevations. Site mean temperature emerged as a strong predictor of local phenology, but the magnitude and direction of change varied with trophic level and the relative timing of an ...