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[期刊论文] 作者:David W.Ferguson, 来源:北京周报(英文版) 年份:2022
My wife and I attended the opening ceremony of the Beijing 2022 Olympic Winter Games at the National Stadium, also known as the Bird\'s Nest, in Beijing on February 4.rnThe first thing that struck me on ar-rival was how spectacular the Olym......
[期刊论文] 作者:DAVID MONYAE, 来源:中国与非洲(英文版) 年份:2022
The Eighth Ministerial Conference of the Forum on China-Africa Cooperation (FOCAC) was held in Dakar, Senegal, on November 29-30, 2021. As per tradition, the forum produced the FOCAC Dakar Action Plan (2022-24), which identifies a series of......
[期刊论文] 作者:DAVID MONYAE, 来源:中国与非洲(英文版) 年份:2022
China is embarking on a new path. Having eradicated the scourge of extreme poverty among its people and having successfully built a moderately prosperous society,China, under the leadership of President Xi Jinping, is now moving toward high......
[期刊论文] 作者:David Parker, 来源:中国神经再生研究(英文版) 年份:2022
While the anatomical properties of regenerated axons across spinal cord lesion sites have been studied extensively, little is known of how the functional properties of regenerated synapses compared to those in unlesioned animals. This study......
[期刊论文] 作者:David Schneider, 来源:科技纵览 年份:2022
在20世纪60年代和70年代,音乐家有时会在自己的作品中插入令人感到新奇的声音,只需用手指将黑胶唱片反转,就可以听到这种声音.如果你觉得这只是“传说”,可以将电光乐团(Electric Light Orchestra)1975年的Fire on High的数字版本加载到Audacity等音频编辑器中......
[期刊论文] 作者:David Schneider, 来源:科技纵览 年份:2022
在2018年,美国田纳西州橡树岭国家实验室安装了一台名为Summit的新型超级计算机.它的理论峰值算力接近每秒200千万亿次浮点运算.根据知名的全球超级计算机500强榜单,当时,它是世界上最强大的超级计算机,轻松超越前世界纪录保持者——中国的“神威?太湖之光”.Su......
[期刊论文] 作者:David Schneider, 来源:科技纵览 年份:2022
2021年3月,宝马和沃尔沃以及其他公司响应了世界自然基金会的号召,呼吁暂停深海采矿.这两家汽车制造商的加入意义重大,因为电动汽车的电池中至少含有几公斤钴,有人希望有朝一日能从海底提取这种金属,这让许多环保主义者感到气愤.......
[期刊论文] 作者:David Shaw, 来源:城市规划(英文版) 年份:2022
1.IntroductionrnFrom the outside looking in,the English planning system is often viewed with a degree of curiosity and with false perceptions of stabil-ity.In truth,it has become a political football that is in a constant state of flux,as v......
[期刊论文] 作者:David J.Wald, 来源:地震学报(英文版) 年份:2022
You might find it hard to believe,but I went to Caltech\'s Seismological Lab for my Ph.D.on a football scholarship.Well,perhaps I should explain.I received my M.S.in Geophysics(Earthquake Seismology)at University of Arizona in 1986,under th......
[期刊论文] 作者:David Briginshaw,万芳, 来源:国外铁道机车与动车 年份:2022
瑞士铁路专家研制了一种ATO系统.经试验,该系统可用于现有的铁路车辆,以实现传统列车的自动驾驶....
[期刊论文] 作者:Priya Jhelum,Samuel David, 来源:中国神经再生研究(英文版) 年份:2022
Redox active metals such as iron, copper, zinc, and manganese play important roles in promoting a variety of biochemical reactions essential for cellular function. This is made possible by the ability of these metals to accept and donate el......
[期刊论文] 作者:David Z.Rose,Scott E.Kasner, 来源:中国神经再生研究(英文版) 年份:2022
What lurks within the crypt? With more than 200 known causes of ischemic stroke (Saver, 2016), what should be the minimum workup? Many centers offer high-resolution brain imaging and vessel studies, telemetry monitoring for atrial fibrillat......
[期刊论文] 作者:Claudia Puri,David C.Rubinsztein, 来源:细胞研究(英文版) 年份:2022
Autophagosome biogenesis occurs via a complex mechanism that involves membranes from different subcellular compart-ments.Here,we review an elegant study from Li et al.describing a new type of ERGIC-ERES membrane contact mediated by TMED9 an......
[期刊论文] 作者:Dan M.Goebel,David Oh, 来源:科技纵览 年份:2022
当我们的太阳系还很年轻的时候,行星尚未出现,只有一个由气体和尘埃组成的弥漫星盘环绕着太阳.但在数百万年里,这团旋涡般的原始物质在自身引力的作用下坍塌,形成了数百乃至数千颗“婴儿行星”,天文学家称为星子.部分星子在旋转的太阳星云中卷入越来越多的尘埃......
[期刊论文] 作者:David P.Goldman,何金娥, 来源:英语文摘 年份:2022
由政府、学术界和民营部门专家组成的课题组在2021年12月发表研究报告称,中国将在今后30年里为实现碳中和融资75万亿美元(约合487万亿元人民币),是中国2020年国民产出的五倍.rn这份长达200页的报告涵盖了从氢燃料车到核电的各种碳中和技术,由中国金融学会绿色金......
[期刊论文] 作者:Jennifer Allen,David Rand,左昌, 来源:英语文摘 年份:2022
1907年,统计学家弗朗西斯·高尔顿在一次县集市上注意到一个奇怪的现象:当时逛集市的人正在玩一个猜公牛体重的游戏,答案最接近事实者可获得奖品.令高尔顿意外的是,虽然各个参与者的猜测大相径庭,但是众人的平均猜测值只与公牛的真实体重差一磅——比猜得最准的......
[期刊论文] 作者:David Felix,Ian Colwill,Paul Harris, 来源:防务技术 年份:2022
Explosion models based on Finite Element Analysis (FEA) can be used to simulate how a warhead fragments.However their execution times are extensive.Active protection systems need to make very fast predictions,before a fast attacking weapon ......
[期刊论文] 作者:Yunji ZHANG,Eugene E.CLOTHIAUX,David J.STENSRUD, 来源:大气科学进展(英文版) 年份:2022
This study explores the structures of the correlations between infrared (IR) brightness temperatures (BTs) from the three water vapor channels of the Advanced Baseline Imager (ABI) onboard the GOES-16 satellite and the atmospheric state. En......
[期刊论文] 作者:杨武,陈培,Gad David, 来源:科学学研究 年份:2022
本研究结合技术轨道特性界定了技术锁定的内涵与特征,提出一种识别技术锁定的新方法.以光刻技术为例,通过构建专利引文网络识别技术主路径,描绘其技术轨道的动态演化,追溯了不同技术来源在不同阶段的技术贡献,并从技术和地域不同层面分析了技术多样性.研究结果......
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