检索结果-南通市图书馆

On the first negative Hecke eigenvalue of an automorphic representation of GL_(2)(A_(Q))

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2021年第11期64卷 2381-2394页

作者： Yuk-Kam Lau Ming Ho Ng Hengcai Tang yingnan wang Department of Mathematics The University of Hong KongHong KongChina Department of Mathematics The Chinese University of Hong KongHong KongChina Institute of Modern Mathematics School of Mathematics and StatisticsHenan UniversityKaifeng 475004China Shenzhen Key Laboratory of Advanced Machine Learning and Applications College of Mathematics and StatisticsShenzhen UniversityShenzhen 518060China

Letπbe a self-dual irreducible cuspidal automorphic representation of GL_(2)(A_(Q))with trivial central *** Hecke eigenvalue λπ(n)is a real multiplicative function in *** show that λπ(n)<0 for some n< 详细信息

关键词： automorphic representation Hecke eigenvalue Maass cusp form sign change

同方期刊数据库

Synthesis and Pharmacodynamics of Ibuprofen-l-acetoxyethyl Ester

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2017年第4期33卷 569-573页

作者： wang Bowei HOU Wanshi wang yingnan LI Shaoheng LIU Zhihui SONG Zhiguang The Second Hospital Jilin University Changchun 130022 P. R. China Department of Onganie Chemistry College of Chemistry Jilin University Changchun 130021 P. R. China Department of ProsthodontTcs Stomatology Hospital of Jilin University Changchun 130021 P. R. China

lbuprofen（IBU） and its derivatives are widely used m treating many diseases, such as depression, glome- rulonephritis, fever caused by common cold or influenza, and rheumatoid arthritis. While in clinical trials, IBU was found to have many side effects. To weaken and prevent these side effects, a derivative called ibupro- fen-l-acetoxyethyl ester was synthesized in this paper. The maximum concentration（Cmax） in a shorter time was com- pared with IBU at the same dose.

关键词： Ibuprofen Ibuprofen-l-acetoxyethyl ester Pharmacodynamic research

Design and Synthesis of 3-Triazolo-coumarins and Their Applications in Scavenging Radicals and Protecting DNA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2015年第4期31卷 526-533页

作者： LIU Zhihui wang yingnan SUN Jingbo YANG Yang LIU Qingwen LIU Zaiqun SONG Zhiguang Hospital of Stomatology Jilin University Changchun 130021 P R. China Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P 1L China

In this study, we synthesized a series of 3-triazolo-coumarins and evaluated their antioxidant activities respectively by two methods： trapping 2,2＇-azinobis（3-ethylbenzothiazoline-6-sulfonate） cationic radical（ABTS＋＋） and oxidation of DNA which was induced by Cu2＋/glutathione（GSH）, ·OH and 2,2＇-azobis（2-amidinopropane hydrochloride）（AAPH）. Among the nine 3-triazolo-coumarins, compounds 6c and 6f-6i were synthesized for the first time, which exhibited the capability of terminating radical propagation-chains in oxidation of DNA induced by AAPH. In this study, we found that phenethylamine moiety, hydroxyl and ortho-methoxy are the key groups to en- hance the antioxidant activities of compounds.

关键词： 3-Triazolo-coumarin Coumarin Free radical Oxidation Antioxidant DNA

Ethylene polymerization by novel highly active iron/acetyl(imino)pyridyl complex

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2006年第18期51卷 2197-2200页

作者： JIANG Tao NING yingnan HU Wenbo wang Libo HUANG Zhijun LIU Xiaoyu School of Chemistry and Chemical Engineering Daqing Petroleum Institute Daqing 163318 China

Novel iron-based complex and ace- tyl(imino)pyridine iron(II) chloride (1 and 2) have been successfully synthesized and characterized. The behavior of the complex/methylaluminoxane (MAO) for ethylene polymerization was investigated and compared with 2,6-Bis(imino)pyridyl iron(II) chloride (3 and 4)/MAO. The results show that the new ace- tyl(imino)pyridine iron(II) chloride/MAO catalytic sys- tems were highly active for ethylene polymerization. Polyethylene from those polymerization systems has a bimodal molecular weight distribution (MWD).

关键词：后转变金属铁复合物催化剂乙烯聚合

Classical swine fever virus NS5A protein antagonizes innate immune response by inhibiting the NF-κB signaling

在线全文

学校读者我要写书评

暂无评论

Virologica Sinica 2023年第6期38卷 900-910页

作者： Jinfu Sun Jiaying Li Liming Li Haixiao Yu Ping Ma yingnan wang Jinqi Zhu Zezhong Feng Changchun Tu Key Laboratory of Bioresource Research and Development of Liaoning Province College of Life and Health SciencesNortheastern UniversityShenyang110169China Changchun Veterinary Research Institute Chinese Academy of Agricultural SciencesChangchun130122China Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonoses Yangzhou UniversityYangzhou225009China

The NS5A non-structural protein of classical swine fever virus(CSFV)is a multifunctional protein involved in viral genomic replication,protein translation,assembly of infectious virus particles,and regulation of cellular signaling *** report showed that NS5A inhibited nuclear factor kappa B(NF-κB)signaling induced by poly(I:C);however,the mechanism involved has not been ***,we reported that NS5A directly interacted with NF-κB essential modulator(NEMO),a regulatory subunit of the IκB kinase(IKK)complex,to inhibit the NF-κB signaling *** investigations showed that the zinc finger domain of NEMO and the aa 126–250 segment of NS5A are essential for the interaction between NEMO and *** analysis revealed that NS5A mediated the proteasomal degradation of *** assay showed that NS5A induced the K27-linked but not the K48-linked polyubiquitination of NEMO for proteasomal *** addition,NS5A blocked the K63-linked polyubiquitination of NEMO,thus inhibiting IKK phosphorylation,IκBαdegradation,and NF-κB *** findings revealed a novel mechanism by which CSFV inhibits host innate immunity,which might guide the drug design against CSFV in the future.

关键词： Classical swine fever virus(CSFV) NS5A NF-κB signaling NEMO Polyubiquitination Proteasomal degradation

Research Progress on Northern Leaf Blight in Corn

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Northeast Agricultural University(English Edition) 2009年第2期16卷 66-71页

作者： ZHAO yingnan wang Zhenhua College of Agriculture Northeast Agricultural University Harbin 150030 China

The northem corn leaf blight is one of the most serious diseases in maize production. The research progress on etiology, generation law and control strategy, antigen identification, resistance mechanism and inheritance of this disease was discussed. And the research work which should be enhanced in China was pointed out, such as mechanism of resistance inheritance, developing function marker, gene mining, screening resistance resource and dominant physiological race in different areas.

关键词： corn northern leaf blight progress

CoSe_(2)supported single Pt site catalysts for hydrogen peroxide generation via two-electron oxygen reduction

在线全文

学校读者我要写书评

暂无评论

SusMat 2023年第3期3卷 334-344页

作者： Xiao-Dong Zhu Qian Zhang Xiaoxuan Yang yingnan wang Jinting Wu Jian Gao Ji-Jun Zou Gang Wu Yong-Chao Zhang State Key Laboratory Base of Eco-Chemical Engineering College of Chemical Engineering Qingdao University of Science&TechnologyQingdaoChina Department of Chemical and Biological Engineering University at BuffaloThe State University of New YorkBuffaloNew YorkUSA Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjinChina

Electrocatalytic oxygen reduction reaction(ORR)to prepare H_(2)O_(2)in acidic medium has the advantages of green,safety,and portability,which shows broad development ***,it still suffers from low catalyst activity,insufficient selectivity,and high ***,Pt_(1)/CoSe_(2)with ultralow 0.01 wt.%Pt atomic distribution was synthesized by a simple hydrothermal *** Pt_(1)/CoSe_(2)with ultralow Pt content exhibits high activity,high selectivity,and long-term stability for ORR to H_(2)O_(2)in O_(2)-saturated 0.1 M HClO_(4).The onset potential is as low as 0.75 V versus reversible hydrogen electrode(RHE),H_(2)O_(2)selectivity is as high as 84%(0.4 V ***),and the electron transfer number is 2.3(0.4 V ***).Moreover,the hydrogen peroxide yield using the flow cell testing is 110.02 mmol g_(cat).^(−1)h^(−1) with high Faradaic efficiency of 78%(0 V ***)at 0.1 M HClO_(4),and the catalyst did not deactivate significantly after 60 h stability *** studies and in situ X-ray photoelectron spectroscopy characterization confirm that the ultralow Pt content on CoSe_(2)can effectively regulate the electronic structure of Co as the real active site around the Pt site,which gives a suitable Δ_(dp) value(the difference between the d-band center of the active metal site and the p-band center of the terminal oxygen in*OOH),provides an ideal*OOH binding energy,and inhibits the O-O bond *** work successfully improves the intrinsic activity of the Co active sites around Pt in Pt_(1)/CoSe_(2)for acidic ORR to H_(2)O_(2)by constructing ultralow-content Pt single atom.

关键词： acidic ORR electrocatalysis hydrogen peroxide Pt_(1)/CoSe_(2) ultralow Pt content

The Cost Analysis on the Law Regulation for Recycling Economy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Economy 2005年第4期1卷 80-82页

作者： Zhou yingnan Yang Lin wang Xuedong School of Management Dalian University of Technology Dalian 116023 P R. China

The paper analyzes the external economy of pollution, Two different cost models of enterprises are established From the point of enterprises and the government, the measures of eliminating the externalily are discusse... 详细信息

关键词： externality cost analysis recycling economy law regulation

在线全文

学校读者我要写书评

暂无评论

英国兰开斯特王朝时期请愿书初探

首都师范大学学报（社会科学版） 2009年第S1期 133-138页

作者：王颖楠首都师范大学历史学院

兰开斯特王朝时期是议会获得极大发展的时期,王权的式微和下院地位的提高促使请愿书也与前一时期有很大不同。下院利用请愿书设法获得法律的创制权。本文试通过分析这一时期请愿书编写、呈递的方式和过程以及下院在请愿书的编写和呈递... 详细信息

兰开斯特王朝时期是议会获得极大发展的时期,王权的式微和下院地位的提高促使请愿书也与前一时期有很大不同。下院利用请愿书设法获得法律的创制权。本文试通过分析这一时期请愿书编写、呈递的方式和过程以及下院在请愿书的编写和呈递过程中所扮演的角色来揭示请愿书的重要作用及其和议会的密切关系。

关键词：请愿书下院兰开斯特王朝