检索结果-南通市图书馆

SYNTHESIS N-pHOSpHOrYLATED CHrYSIN-7-YL AMINO ACID ESTErS

在线全文

cnki会议

学校读者我要写书评

暂无评论

SYNTHESIS N-PHOSPHORYLATED CHRYSIN-7-YL AMINO ACID ESTERS

第17届国际磷化学大会

作者： li Wenfeng1 Chen Xiaolan1 Yuan Jinwei1 Qu lingbo1 2 Zhao Yufen1 3.1 department of chemistry Zhengzhou {3. Zhengzhou 450052 p. r. china 2 Anyang Normal College Henan province Anyang 455002 p. r. china 1 3.he key laboratory for bioorganic phosphorus chemistry department of chemistry School life Sciences and Engineering tsinghua university beijing 10084 p. r. china

＜正＞Chrysin, 5,7-dihydroxyflavone, which is widely distributed in plants, is known to have many biological activities including antibacterial, antioxidant, anti-inflammatory, anti-allergic, anticancer,

关键词：

Direct growth of single-walled carbon nanotubes on substrates

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science Bulletin 2012年第Z1期 225-233页

作者： pENG Fei,liU Yu,CUI rongli,GAO Dongliang,{3.G Feng & li {3.* beijing National laboratory for Molecular Sciences,National laboratory of rare Earth Material chemistry and Application,key laboratory for the physics and chemistry of Nanodevices,College of chemistry and Molecular Engineering,peking university,beijing 100871,china

As one of the most promising candidate material for next generation electronic devices,the reliable and controllable synthesis of high quality single-walled carbon nanotubes(SWNTs) has long been an essential and important issue in the *** growth of SWNTs on flat substrates by chemical vapor deposition(CVD) process is the best way to obtain SWNTs because it is immediately ready for building *** orientation of the SWNTs has been well controlled by gas flow or substrate lattice during the CVD growth *** chirality and structure control of SWNTs is still a big ***,the conductivity selective growth has already partially *** catalysts have been explored to obtain SWNTs of higher *** with the further progress in the study of the SWNT growth,the precise control over the orientation,position and conductivity of SWNTs is expected to meet the requirements of carbon-based nanoelectronics.

关键词： single-walled carbon nanotubes chemical vapor deposition selective growth

Cu（Ⅰ）-Catalyzed Alkynyl Migratory Insertion:A Novel Synthesis of Substituted Allenes from Terminal Alkynes and Tosylhydrazones

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Cu（Ⅰ）-Catalyzed Alkynyl Migratory Insertion:A Novel Synth...

第十六届全国金属有机化学学术讨论会

作者： Qing Xiao,Ying Xia,Huan li,yan Zhang and Jianbo Wang~* beijing National {3. for Molecular Sciences(BNLMS),key {3. of bioorganic chemistry and Molecular Engineering of Ministry of Education,College of chemistry,peking university,beijing 100871,china

＜正＞Since allenes are useful substrates and versatile intermediates in organic synthesis,numerous synthetic methodologies to access such compounds have been developed during the past *** methods can be divided into ...

关键词：

pDK Inhibitor reverses BCrp-mediated Drug resistance

在线全文

cnki会议

学校读者我要写书评

暂无评论

PDK Inhibitor Reverses BCRP-mediated Drug Resistance

2011年全国药物化学学术会议——药物的源头创新

作者： li,Tian-Wen~1,SHANG,pei-Hua~1,CHENG,Chang-mei`(*,1),CHEN,Zhe-Sheng~(*,2),ZHAO,Yu-Fen~1 1 key {3. of bioorganic phosphorus chemistry & chemical biology(Ministry of Education),department of chemistry,tsinghua university,beijing,100084 2 department of pharmaceutical Sciences,College of pharmacy and Allied Health professions,St. John''s {13.,New York,NY 1143.

＜正＞（r）-l,l,l-trifluoro-2-hydroxy-2-methylpropanamides,represented by AZD7545,were known as pyruvate dehydrogenase kinase（pDK） inhibitor 1,***,it was reported that Mitapiatin, fusion of cisplatin and another pDK...

关键词：

Study on thermodynamics of 3.3.dinitroazetidine salt

在线全文

cnki会议

学校读者我要写书评

暂无评论

Study on thermodynamics of 3,3-dinitroazetidine salt

中国化学会第十五届全国化学热力学和热分析学术会议

作者： yan Biao~(1,2),MA Hai-xia~1,li Hong-ya~(1,2),li Jun-feng~1,HU Ying~1,SONG Ji-rong~(1,3. (1.College of {3. Engineering/ Shaanxi key laboratory of physico-Inorganic chemistry,Northwest university,Xi’an 710069,china 2.College of chemistry and {3. Engineering,Yulin university 7190000,china 3.Conservation Technology department,the palace Museum,beijing 100009 china)

The specific heat capacity of four 3.3.dinitroazetidine(DNAZ) salts was determined with continuous C mode of mircocalorimeter(Micro-DSCⅢ).In the determining temperature range from 283.0 K to 3.4.9 K,the special heat ... 详细信息

关键词： DNAZ salt Quantum chemical investigation specific heat capacity thermodynamic properties

Indole-3.acetic acid,a potential therapeutic target in Alzheimer's disease

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science Bulletin 2024年第2期69卷 146-147页

作者： Jinghong li department of chemistry Center for Bioanalytical ChemistryKey Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology(Ministry of Education)Tsinghua UniversityBeijing 100084China

Alzheimer's disease(AD)is a chronic and progressive neurodegenerative disease that is characterized by the presence of amyloid-β(Ap)plaques,hyperphosphorylated microtubule-associated tau protein(p-tau)neurofibrillary tangles and neuronal *** to recent data,AD is the most common global cause of dementia in the *** billions of dollars have been invested in research,there is still no effective drug for the treatment of AD;consequently,this disease imposes a huge burden on individuals,families,and healthcare systems[1,2].

关键词： Alzheimer tau degeneration

Introducing hydroxyl groups to tailor the d-band center of Ir atom through side anchoring for boosted Orr and HEr

维普期刊数据库评论

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 Energy chemistry 2024年第3期90卷 144-151,I0005页

作者： Qing Lv meiping li Xiaodong li Xingru {3. Zhufeng Hou Changshui Huang Science Center for Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringInstitute of Frontier and Interdisciplinary ScienceShandong UniversityJinan 250100ShandongChina Institute of chemistry Chinese Academy of ScienceBeijing 100191China State key laboratory of Structural chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina

Tuning the coordination atoms of central metal is an effective means to improve the electrocatalytic activity of atomic ***,iridium(Ir) is proposed to be asymmetrically anchored by sp-N and pyridinic N of hydrogen-substituted graphdiyne(HsGDY),and coordinated with OH as an Ir atomic catalyst(Ir_(1)-N-HsGDY).The electron structures,especially the d-band center of Ir atom,are optimized by these specific coordination ***,the as-synthesized Ir_(1)-N-HsGDY exhibits excellent electrocatalytic performances for oxygen reduction and hydrogen evolution reactions in both acidic and alkaline *** from the unique structure of HsGDY,IrN_(2)(OH)_(3. has been developed and demonstrated to act as the active site in these electrochemical *** those indicate the fresh role of the sp-N in graphdiyne in producing a new anchor way and contributing to promote the electrocatalytic activity,showing a new strategy to design novel electrochemical catalysts.

关键词： Oxygen reduction reaction D-band center Graphdiyne Hydroxyl group Electrocatalysis

Kinetic and mechanism of the reaction between Cl and several mono-methyl branched alkanes

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第1期135卷 474-482页

作者： yan Chen Weigang Wang Junling li li Zhou Bo Shi Cici Fan Ke Wang Hao Zhang Hong li Maofa Ge State key laboratory for Structural chemistry of Unstable and Stable Species Beijing National Laboratory for Molecular Sciences(BNLMS)CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China university of Chinese Academy of Sciences Beijing 100049China State key laboratory of Environmental Criteria and risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China National Engineering research Center for Flue Gas Desulfurization Department of Environmental Science and EngineeringSichuan UniversityChengdu 610065China College of chemistry and Materials Science Hebei Normal UniversityShijiazhuang 050024China

Branched alkanes are ubiquitous in the troposphere and play an important role in the chemical *** this work,the rate constants and products for the reaction of Cl atoms with 3.methylhexane and 2-methylheptane were measured at room temperature(298±0.2K)and atmospheric pressure using a conventional relative rate *** rate constants of 3.methylhexane and 2-methylheptane in units of cm~3.(mol·sec)are(3.09±0.3.)×10^(-10)and(3.67±0.40)×10^(-10),***,the corresponding atmospheric lifetime of the studied branched alkanes with Cl was 6.92-89.90 hours and 5.82-75.69 hours,*** estimated atmospheric lifetimes indicated that the reaction with Cl atoms could be the most important atmospheric degradation pathway for 3.methylhexane *** gas-phase products of the reactions were identified and quantified,and particle-phase products were also *** atmosphere oxidation mechanism of Cl atoms with 3.methylhexane and 2-methylheptane is *** SOA yields of 3.methylhexane and 2-methylheptane from the reaction of Cl atoms were determined to be7.96%±0.89%and 13.3.%±1.50%***,the results reveal that the primary loss process of branched alkanes is the reaction with Cl atoms,which impacts its degradation on a regional scale.

关键词： 3.Methylhexane 2-Methylheptane Chlorine atoms Kinetics Mechanism

real-time identification of multiple nanoclusters with a protein nanopore in single-cluster level

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano research 2024年第1期17卷 262-269页

作者： ling Zhang peilei He Huang Chen Qingda liu libo li Xun Wang Jinghong li department of chemistry Center for BioAnalytical ChemistryKey Laboratory of Bioorganic Phosphorus Chemistry&Chemical BiologyTsinghua UniversityBeijing 100084China School of chemistry and chemical Engineering Guangdong Prov Key Lab Green Chem Prod TechnolSouth China University of TechnologyGuangzhou 510640China New Cornerstone Science laboratory Shenzhen 518054China beijing Institute of life Science and Technology Beijing 102206China Center for BioAnalytical chemistry Hefei National Laboratory of Physical Science at MicroscaleUniversity of Science and Technology of ChinaHefei 230026China

It is important and challenging to analyze nanocluster structure with atomic ***,α-hemolysin nanopore was used to identify nanoclusters at the single molecule level by providing two-dimensional(2D)dwell time–current blockage spectra and translocation event frequency which sensitively depended on their *** such as Anderson,Keggin,Dawson,and a few lacunary Dawson polyoxometalates with very similar structures,even with only a two-atom difference,could be *** nanopore device could simultaneously measure multiple nanoclusters in a mixture qualitatively and ***,molecular dynamics(MD)simulations provided microscopic understandings of the nanocluster translocation dynamics and yielded 2D dwell time–current blockage spectra in close agreement with *** nanopore platform provides a novel powerful tool for nanocluster characterization.

关键词： nanopore single-molecule nanocluster polyoxometalates real-time detection