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Rising Stars

Beijing Review 2006年第23期49卷 28-30页

作者： By chen wen

At the annual festival in Cannes,Chineses filmmakers participate,learn and earn At this year's Cannes Film Festival, Chinese directors made their presence felt again in a significant way. Two Chinese films-Luxury Car,... 详细信息

关键词： Rising Stars

Promoted reactants activation and charge separation leading to efficient photocatalytic activity on phosphate/potassium co-functionalized carbon nitride

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Chinese Chemical Letters 2019年第4期30卷 875-880页

作者： Maoxi Ran Peng chen Jiarui Li wen Cui Jieyuan Li Ye He Jianping Sheng Yanjuan Sun Fan Dong Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and Resources Chongqing Technology and Business University Research Center for Environmental Science & Technology Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China The Center of New Energy Materials and Technology School of Materials Science and Engineering Southwest Petroleum University College of Architecture and Environment Sichuan University

Photocatalytic technology has been widely adopted to address the issue of air pollution. The separation of photogenerated carriers and the activation of reactants on catalyst surface are the main factors that affect the photocatalytic efficiency. Here, the phosphate/potassium(PO_4/K) cofunctionalized carbon nitride(labeled as PO_4-CN-K) was synthesized via a one-step in situ copyrolysis of thiourea and potassium phosphate. The unique electronic structure of PO_4-CN-K could significantly improve the performance of photocatalytic NO purification. The enhanced activity of PO_4-CN-K can be attributed to the promoted activation capacity for O_2, NO and H_2O on the catalyst surface,the decreased of carriers recombination, benefiting from the co-functionalization of phosphate groups on the surface of CN and the construction of K channels between CN layers. The photocatalytic NO conversion pathway is disclosed through time-dependent in situ FT-IR, indicating that PO_4-CN-K can efficiently convert NO molecules into harmless nitrate via the NO→NO+→nitrate/nitrite routes. The research provides a novel strategy to impel the development of photocatalytic technology for efficient air purification.

关键词： Photocatalysis Carbon nitride Co-functionalization NO conversion process In situ FT-IR

Luteolin prevents f MLP-induced neutrophils adhesion via suppression of LFA-1 and phosphodiesterase 4 activity

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Journal of Integrative Agriculture 2015年第1期14卷 140-147页

作者： JIANG Dai-xun LIU Shu-rong ZHANG Mei-hua ZHANG Tao MA wen-jing MU Xiang chen Wu Beijing Key Laboratory of Traditional Chinese Veterinary Medicine Beijing University of Agriculture

Luteolin is an active ingredient found early from Fofium perillae and Flos Ionicerae, and has a specific inhibition on phosphodiesterase 4 （PDE4） activity in vitro. Researches show luteolin has pharmacological effects of anti-inflammation, anti-anaphylaxis, antitumor, antioxidant, protection of nervous system and so on, and has mainly been used for the treatment of respiratory inflammatory diseases, cancer and cardiovascular disease in clinic. PDE4, specific to hydrolyze cyclic AMP （cAMP）, is considered to be a new anti-inflammatory target due to the decisive role on cAMP signal in inflammatory cells such as neutrophils. In order to explore the anti-inflammatory mechanism, we further studied the effects of luteolin on the activity and expression of PDE4, the expression of lymphocyte function-associated antigen-1 （LFA-1） and macrophage-1 （MAC-l） in neutrophils, and the adhesion of neutrophils and endothelial cells. The results showed that luteolin had a dose-dependent inhibition on both bare PDE4 activity and PDE4 in cultured neutrophils, and had an obviously promotive effect on gene expressions of PDE4A, 4B and 4D in later period. Luteolin had a significant inhibitory effect on neutrophils adhesion and LFA-1 expression in early stage, and had no obvious effect on MAC-1 expression. Therefore, luteolin can inhibit LFA-1 expression of neutrophils, then inhibit the adhesion of neutrophils and endothelial cells, and the mechanism is at least related with the inhibition of PDE4 activity.

关键词： luteolin neutrophils phosphodiesterase 4 LFA-1 MAC-1 adhesion swine

From Convention to the Campaign Trail

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Beijing Review 2008年第37期51卷 14-15页

作者： chen wen

Will John Mccain’s surprise VP pick turn out to be a bane or a boon?An Alaska governor and politicalunknown has emerged from obscu-rity to run for the second highestoffice in the United States.

关键词： From Convention to the Campaign Trail

Liutex theoretical system and six core elements of vortex identification

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Journal of Hydrodynamics 2020年第2期32卷 197-211页

作者： Yi-qian Wang Yi-sheng Gao Hongyi Xu Xiang-rui Dong Jian-ming Liu wen-qian Xu Meng-long chen Chaoqun Liu School of Mathematical Science Soochow UniversitySuzhou215006China College of Aerospace Engineering Nanjing University of Aeronautics and AstronauticsNanjing210016China Aeronautics and Astronautics Department Fudan UniversityShanghai200433China School of Energy and Power Engineering University of Shanghai for Science and TechnologyShanghai200093China School of Mathematics and Statistics Jiangsu Normal UniversityXuzhou221116China Faculty of Mechanical Engineering and Automation Zhejiang Sci-Tech UniversityHangzhou310018China SimpleHPC LTD. Shanghai200030China Department of Mathematics University of Texas at ArlingtonArlington76019USA

The third-generation vortex identification method of Liutex(previously called Rortex)was introduced by the team led by *** Liu from University of Texas at Arlington to mathematically extract the rigid rotation part from the fluid motion,and thus to define and visualize *** the vorticity-based first generation and the scalar-valued second generation,Q,λ2,Δandλci methods for example,the Liutex vector provides a unique,mathematical and systematic way to define vortices and visualize vortical structures from multiple perspectives without *** this article,we summarize the recent developments of the Liutex framework and discuss the Liutex theoretical system including its existence,uniqueness,stability,Galilean invariance,locality and globality,decomposition in tensor and vector forms,Liutex similarity in turbulence,and multiple Liutex-based vortex visualization methods including Liutex lines,Liutex magnitude iso-surfaces,Liutex-Ωmethod,and Liutex core line method,etc..Thereafter,the six core elements of vortex identification,including(1)absolute strength,(2)relative strength,(3)local rotational axis,(4)vortex rotation axes,(5)vortex core size,(6)vortex boundary,are used as touchstones against which the Liutex vortex identification system is *** is demonstrated with illustrative examples that the Liutex system is able to give complete and precise information of all six core elements in contrast to the failure and inaccuracy of the first and second-generation *** important concept that vorticity cannot represent vortex and the superiority of the Liutex system over previous methods are reiterated and stated in appropriate places throughout the ***,the article concludes with future perspectives,especially the application of the Liutex system in studying turbulence mechanisms encouraged by the discovery of Liutex similarity *** a newly defined physical quantity,Liutex may open a door for quantified vortex and turbulenc

关键词： Vortex identification Liutex vector six core elements Liutex core line Liutex similarity turbulence

COMPETITIVE COMPANIONS

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Beijing Review 2006年第16期49卷 18-19页

作者： chen wen

Trade and other economic issues still loom large between China and the United States, although cooperation between the two countries has been increasing every year. In an exclusive interview with Beijing Review, Charles Martin, President of the American Chamber of Commerce in China, discusses a range of issues affecting U.S. businesses operating here.

关键词： Co COMPETITIVE COMPANIONS

Interpersonal coordination in schizophrenia:a concise update on paradigms,computations,and neuroimaging findings

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Psychoradiology 2023年第1期3卷 13-17页

作者： Yafeng Pan Yalan wen Yajie Wang Leonhard Schilbach Ji chen Department of Psychology and Behavioral Sciences Zhejiang University HangzhouZhejiang 310058China Department of General Psychiatry 2 and Neuroimaging Section LVR Klinikum DisseldorfDisseldorf 40629Germany Medical Faculty Ludwig-Maximilians UniversityMunich 80539Germany Department of Psychiaty The Fourth Affliated HospitalZhejiang University School of MedicineYiwuZhejang 3220000 China

Social function deficits are a ubiquitous manifestation of many psychiatric disorders including schizophrenia(Burns,2006;Green et al,2015;Schilbach,2016).Patients with schizophrenia(PSZ)exhibit a variety of abnormalities in social cognition related to social perception,facial emotion recognition,mentalization,and interpersonal coordination(Turetsky et al,2007;Schilbach,2016;Green et al,2019).

关键词： schizophrenia social functioning computational psychiatry neuroimage interpersonal coordination

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FUELING THE ENGINE

Beijing Review 2006年第11期49卷 28-32页

作者： chen wen

The non-state economy accounts for anywhere between one half to two thirds of China's gross domestic product. It is most dominant in the service sector, particularly wholesale and retail trade. Private entrepreneurs say their future growth will depend on progress in establishing a sound legal environment and a more sophisticated capital market.

关键词： FUELING THE ENGINE

New Era of Engagement

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Beijing Review 2009年第40期52卷 34-35页

作者： chen wen

G20 leaders achieve breakthroughs in sustaining economic recovery and reforming the international financial system at their third summit in Pittsburgh

关键词： New Era of Engagement