检索结果-南通市图书馆

Affect of B4C Particle Size on the Analytical Results in Slurry Nebulization ICP-OES Analysis

在线全文

学校读者我要写书评

暂无评论

Affect of B4C Particle Size on the Analytical Results in Slu...

Top 10 Influential Events in carbon neutrality and climate change response for 2023

第三十五届国际光谱会议

作者： Z.Wang ~(1,2*)D.Qiu ~2 G.Y.Tao ~1 P.Y.Yang~(2*) ~1shanghai Institute of Ceramics,Chinese Academy of Sciences,shanghai 200050,china ~2department of chemistry,fudan university,shanghai 200433,china

＜正＞Slurry introduction coupled with inductively coupled plasma optical emission spectrometry or mass spectrometry （ICP-OES/MS） is a feasible way for the direct analysis of powdery ceramic *** the complexities of this approach,in which solid sample are directly analysed in form of aqueous suspension,are apparent. Highly stable and homogeneous slurry is required in order to provide precise and

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第1期18卷 1-3页

作者： Research Institute of Carbon Neutrality of shanghai Jiao Tong university Research Institute of Carbon Neutrality Shanghai Jiao Tong UniversityShanghai 200240China

In 2023, the global community intensified its efforts towards achieving carbon neutrality and addressing climate change, witnessing several impactful events. Research Institute of Carbon Neutrality, shanghai Jiao Tong university compiled the Top 10 Events (in chronological order) in the field of global carbon neutrality and climate change response for 2023, to share with readers these significant moments that document the ongoing ambition and collective efforts of human society.

关键词： neutral collective intensified

Metalloproteins/metalloenzymes for the synthesis of acetyl-CoA in the Wood-Ljungdahl pathway

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

Science china chemistry 2009年第12期52卷 2071-2082页

作者： ZHU XiaoFei1 & TAN XiangShi1,2 1 department of chemistry,fudan university,shanghai 200433,china 2 Institutes of Biomedical Sciences,fudan university,shanghai 200433,china department of chemistry Fudan University Shanghai China Institutes of Biomedical Sciences Fudan University Shanghai China

This paper focuses on the group of metalloproteins/metalloenzymes in the acetyl-coenzyme A synthesis pathway of anaerobic microbes called Wood-Ljungdahl pathway,including formate dehydrogenase (FDH),corrinoid iron sulfur protein (CoFeSP),acetyl-CoA synthase (ACS) and CO dehydrogenase (CODH). FDH,a key metalloenzyme involved in the conversion of carbon dioxide to methyltetrahydrofolate,catalyzes the reversible oxidation of formate to carbon dioxide. CoFeSP,as a methyl group transformer,accepts the methyl group from CH3-H4 folate and then transfers it to ACS. CODH reversibly catalyzes the reduction of CO2 to CO and ACS functions for acetyl-coenzyme A synthesis through condensation of the methyl group,CO and coenzyme A,to finish the whole pathway. This paper introduces the structure,function and reaction mechanisms of these enzymes.

关键词： Wood-Ljungdahl pathway formate dehydrogenase corrinoid iron sulfur protein acetyl-CoA synthase CO dehydrogenase

Modern thermodynamics-New concepts based on the second law of thermodynamics

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2009年第1期19卷 125-135页

作者： Jitao Wang department of Microelectronics,fudan university,shanghai 200433,china department of Microelectronics Fudan University Shanghai 200433 China

Thermodynamics is a core part of *** all scientists should have a basic knowledge of *** is a science of development,and is a viewpoint of scientific development in natural *** of thermodynamics has influence not only on natural sciences,but also on social sciences and *** concepts and definitions are very important for any discipline of science,so what is classical thermodynamics and what is modern thermodynamics have become the key points of puzzledom in *** this paper,after clarification of fundamental concept in thermodynamics,a complete basic modern classification of thermodynamics is naturally *** is suggested that extended Carnot theorem and dissipation decrease theorem,together with the laws of thermodynamics,are the most fundamental theorems in thermodynamics *** thermodynamics is a new field besides equilibrium thermodynamics belonging to the equal part of the second law of thermodynamics.

关键词： Modern thermodynamics Second law of thermodynamics Thermodynamic coupling Spiral reactions Chemical oscillation Low-pressure diamond growth

A NONLOCAL NONLINEAR BOUNDARYVALUE PROBLEM FOR THE HEAT EQUATIONS

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 1996年第3期17卷 365-374页

作者： YAN JINHAI(department of Mathematics, fudan university, shanghai 200433, china) department of Mathematics Fudan University Shanghai 200433 China

The existence and limit behaviour of the solution for a kind of nonlocal nonlinear boundaryvalue condition on a part of the boundary is studied for the heat equation, which physicallymeans that the potential is the function of the total flux. When this part of boundary shrinksto a point in a certain wayt this condition either results in a Dirac measure or simply disappearsin the corresponding problem.

关键词： Heat equation Nonlinear boundary problem Potential Limit behavior

THE CODIMENSION FORMULA ON AF-COSUBMODULES

在线全文

学校读者我要写书评

暂无评论

Chinese Annals of Mathematics,Series B 2002年第3期23卷 419-424页

作者： GUO KUNYU department of Mathematics, fudan university, shanghai 200433, china department of Mathematics Fudan University Shanghai 200433 China

Let M1, M2 be submodules of analytic Hilbert module X on ?(? Cn) such that M1 ? M2 and dimM1/M2 = k < '. If M2 is an AF-cosubmodule, then the codimension dimM1/M2 of M2 in M1 equals the cardinality of zeros of M2 rel... 详细信息

Let M1, M2 be submodules of analytic Hilbert module X on ?(? Cn) such that M1 ? M2 and dimM1/M2 = k 2 is an AF-cosubmodule, then the codimension dimM1/M2 of M2 in M1 equals the cardinality of zeros of M2 related to MI by counting multiplicities. The codimension formula has some interesting applications. In particular, the author calculates out the dimension of Rudin quotient module, which is raised in [14].

关键词： AF-cosubmodule Characteristic space Analytic Hilbert module

Synthesis of adamantane on zeolite catalysts

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of chemistry 1994年第1期12卷 52-57页

作者： GAO, Zi YANG, Xiao-Bodepartment of chemistry, fudan university, shanghai 200433, china department of chemistry Fudan University Shanghai 200433 China

The synthesis of adamantane from tetrahydrodicyclopentadiene on zeolites with different framework structures was studied. The adamantane yield on HY zeolites is higher than on HM and HZSM-5 zeolites. Among various types of dealuminated HY zeolites the HEY and HUSY zeolites give higher adamantane yields than conventional HY zeolite. The changes in activity and selectivity of the main and side reactions are correlated with the acidity and the pore structure of the zeolites. To ion-exchange the HY and HUSY zeolites with Ni2+ and La3+ cations may further improve the activity and selectivity of the zeolite catalysts.

关键词： Adamantance zeolite catalysis ion-exchange.

Recent developments of nanoparticle-based enrichment methods for mass spectrometric analysis in proteomics

在线全文

学校读者我要写书评

暂无评论

Science china chemistry 2010年第4期53卷 695-703页

作者： ZHANG LiJuan, LU HaoJie & YANG PengYuan department of chemistry and Institutes of Biomedical Sciences, fudan university, shanghai 200433, china department of chemistry and Institutes of Biomedical Sciences Fudan University Shanghai China

In proteome research, rapid and effective separation strategies are essential for successful protein identification due to the broad dynamic range of proteins in biological samples. Some important proteins are often expressed in ultra low abundance, thus making the pre-concentration procedure before mass spectrometric analysis prerequisite. The main purpose of enrichment is to isolate target molecules from complex mixtures to reduce sample complexity and facilitate the subsequent analyzing steps. The introduction of nanoparticles into this field has accelerated the development of enrichment methods. In this review, we mainly focus on recent developments of using different nanomaterials for pre-concentration of low-abundance peptides/ proteins, including those containing post-translational modifications, such as phosphorylation and glycosylation, prior to mass spectrometric analysis.

关键词： enrichment nanoparticles mass spectrometry proteomics phosphorylation glycosylation

The adsorption isotherms, IR and ^(29)Si MAS NMR spectra of modified MCM-41 molecular sieves

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第10期42卷 828-832页

作者： LONG Yingcai, DONG Weiyang, XU Taiming, GAO Xiaoqin, XIE Guangen and SUN Yaojun1. department of chemistry, fudan university, shanghai 200433, china 2. Centre of Analysis and Measurement, fudan university, shanghai 200433, china department of chemistry Fudan University Shanghai China Centre of Analysis and Measurement Fudan University Shanghai China

RECENTLY a new family of mesoporous molecular sieves,M41S,was reported by researchers atMobil R&D *** a member of the family,MCM-41,which exhibits a hexagonalarray of uniform channel mesopores,has been *** channel size can be variedfrom approximately 1.5 nm to greater than 10 nm by choosing different surfactants,auxiliarychemicals(1,3,5-trimethylbenzene)in the reactant,and by changing the reaction *** wall thickness of this kind of molecular sieve is in the range of 0.3 to 1.3 nm esti-

关键词： MCM-41 surface modification adsorption isotherm IR 29Si MAS NMR.