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[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
The COVID-19 pandemic, lasting for about two years, has undeniably pre-sented one of the greatest protracted challenges to humanity. Now it is surging with more variants that spread even faster. It has exerted a profound impact on a world d......
[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
The year 2021 brought nu-merous developments in international and regional arenas, from the COVID-19 world-wide spread and climate change, to the hasty withdrawal of the U.S. from Afghanistan and the renewed atten-tion to the Nuclear Non-Pr......
[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
The world has been placed on high alert by the escalation of the Russia-Ukraine crisis. The logic behind Russia\'s actions is to protect its national security and to counteract NATO attempts, led by the U.S., to press itself forward onto Ru......
[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
With the Olympic flame dancing to the drums of the Chinese Year of the Tiger, the Beijing 2022 Games—the first-ever Winter Olympics held in China and its second Olympics after hosting the 2008 Summer Games—concluded on February 20, to be ......
[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
The Ukraine crisis is holding “a sword of Damocles”over the global economy,UN Secretary General António Guterres has warned, especially over poor, developing countries that face skyrocketing food, fuel and fertilizer prices, and are now ......
[期刊论文] 作者:Hai-Yang Cheng,
来源:科学通报(英文版) 年份:2022
For ground-state singly charmed baryons,the Λ+c,Ξ+c and Ξ0c form an antitriplet representation and they all decay weakly.TheΩ0c,Ξ1+c,Ξ1+c and ∑++,+,0c form a sextet representation;among them,only Ω0c decays weakly....
[期刊论文] 作者:Zhong Cheng,
来源:北京周报(英文版) 年份:2022
In the ongoing Russia-Ukraine conflict,warplanes, rockets, missiles and artillery units are not the only weapons in use. An information war is proving no less fierce than the fighting taking place on the ground....
[期刊论文] 作者:Hui-Ming Cheng,
来源:国家科学评论(英文版) 年份:2022
Voids are an essential scientific issue when it comes to traditional composite materials,because they greatly de-grade the latter\'s properties and usually cause catastrophic failure [1].Many characterization methods,such as mi-croscale X-r......
[期刊论文] 作者:Jianchun Cheng,
来源:中国科学:物理学 力学 天文学(英文版) 年份:2022
Ultrasonic waves,although not audible,naturally exist at high frequencies.Ultrasound can be controlled and unitized in various scenarios.Well-known examples are bats and dolphins,which produce ultrasound and detect the reflected signal for ......
Machine learning and numerical investigation on drag reduction of underwater serial multi-projectile
[期刊论文] 作者:Xi Huang,Cheng Cheng,Xiao-bing Zhang,
来源:防务技术 年份:2022
To increase launching frequency and decrease drag force of underwater projectiles,a serial multi-projectiles structure based on the principle of supercavitation is proposed in this paper.The drag reduction and supercavitation characteristic......
Interference mechanism and damage accumulation in high-speed cross scratches on hard brittle materia
[期刊论文] 作者:Feifei ZHAO,Bin LIN,Yuanping HE,Tianyi SUI,
来源:中国航空学报(英文版) 年份:2022
Precision and low damage grinding of aviation optical elements can effectively improve the overall processing efficiency.The mechanism of high-speed cross scuffing of multiple abrasive particles has become an important factor affecting the ......
[期刊论文] 作者:Ziwen Zuo,Junfeng Wang,Yuanping Huo,Dongbao Wang,Hongbing Ji,
来源:颗粒学报(英文版) 年份:2022
The movement of the liquid column inside the slit was utilized to experimentally simulate the character-istics of the capillary force per unit length for different rough flat surfaces.The movement of the liquid column was achieved by contin......
[期刊论文] 作者:DONG Peng,CHENG Jie,
来源:武汉理工大学学报(材料科学版)(英文版) 年份:2022
The 2024 anodized aluminum alloy film was sealed by KAl(SO4)2 solution and the effect of sealing on corrosion resistance was investigated by means of potentiodynamic polarization curves, electrochemical impedance spectroscopy, and X-ray pho......
Majorana zero modes,unconventional real-complex transition,and mobility edges in a one-dimensional n
[期刊论文] 作者:Shujie Cheng,Xianlong Gao,
来源:中国物理B(英文版) 年份:2022
A one-dimensional non-Hermitian quasiperiodic p-wave superconductor without PT-symmetry is studied.By an-alyzing the spectrum,we discovered that there still exists real-complex energy transition even if the inexistence of PT-symmetry breaki......
Impacts of Oceanic Fronts and Eddies in the Kuroshio-Oyashio Extension Region on the Atmospheric Gen
[期刊论文] 作者:Guidi ZHOU,Xuhua CHENG,
来源:大气科学进展(英文版) 年份:2022
This paper reviews the progress in our understanding of the atmospheric response to midlatitude oceanic fronts and eddies, emphasizing the Kuroshio-Oyashio Extension (KOE) region. Oceanic perturbations of interest consist of sharp oceanic f......
[期刊论文] 作者:CHENG Manli,ZHOU Yanping,
来源:武汉大学自然科学学报(英文版) 年份:2022
Based on the notion of the complex Lp centroid body,we establish Brunn-Minkowski type inequalities and monotonicity inequalities for complex Lp centroid bodies in this article.Moreover,we obtain the affirmative form of Shephard type prob-le......
[期刊论文] 作者:Chun CHENG,Changbin YU,
来源:中国科学:信息科学(英文版) 年份:2022
Dear editor,rnOver the past decade,“opinion dynamics”of social networks have obtained considerable attention from control theory,sociology,and physics[1-3].One of the most commonly studied models is the Hegselmann-Krause(H-K)model[4],whic......
Government environmental control measures on CO2 emission during the 2014 Youth Olympic Games in Nan
[期刊论文] 作者:Cheng Hu,Cheng Liu,Ning Hu,Jun Hong,Xinyue Ai,
来源:环境科学学报(英文版) 年份:2022
Strict air pollution control measures were conducted during the Youth Olympic Games(YOG) period at Nanjing city and surrounding areas in August 2014.This event provides a unique chance to evaluate the effect of government control measures o......
The Register and Characteristics of Chinese Key Protected Wild Plants in Dabie Mountains National Na
[期刊论文] 作者:Jun QI,Peng FU,Jian FU,Aiguo ZHEN,Li JIANG,Yuanping FANG,
来源:Agricultural Biotechnology 年份:2022
A study was conducted on the newly promulgated key protected wild plants distributed in the Dabie Mountains National Nature Reserve in Hubei in2021. According to statistics,Dabie Mountains National Na...
[期刊论文] 作者:Evelyn Cheng,徐紫涵,
来源:英语文摘 年份:2022
近来身家暴增的中国网红不断打破直播销售纪录,商家则在寻找更适合其品牌的营销策略.rn许多分析人上表示,直播已经得到普遍认可,但单纯依靠网红和浏览量是不够的.rn“直播带货”这种实时在线销售现象自去年(2020年)新冠肺炎疫情暴发以来在中国迅速兴起,并在其他......
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