检索结果-南通市图书馆

同方期刊数据库

determining burn degree of fire-damaged concrete constructions by thermoluminescence

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第21期42卷 1829-1833页

作者： Pei, JX Han, Y Sun, XH Chinese Acad Sci Inst Geol Beijing 100029 Peoples R China

NOWADAYS there are many skyscrapers in cities. If fire-damaged, the only way to lessen

关键词： determining of thermolominescence concrete constructions.

A high-throughput technique for determining grain boundary character non-destructively in microstructures with throughthickness grains

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2016年第1期2卷 119-123页

作者： Matteo Seita Marco Volpi Srikanth Patala Ian McCue Christopher A Schuh Maria Vittoria Diamanti Jonah Erlebacher Michael J Demkowicz Department of Materials Science and Engineering Massachusetts Institute of TechnologyCambridgeMAUSA Department of Chemistry Materials and Chemical Engineering‘G Natta’Politecnico di MilanoMilanItaly Department of Materials Science and Engineering North Carolina State UniversityRaleighNCUSA Department of Materials Science and Engineering Johns Hopkins UniversityBaltimoreMDUSA Materials Science and Engineering Texas A&M UniversityCollege StationTXUSA

Grain boundaries(GBs)govern many properties of polycrystalline ***,because of their structural variability,our knowledge of GB constitutive relations is still very *** present a novel method to characterise the complete crystallography of individual GBs non-destructively,with high-throughput,and using commercially available *** method combines electron diffraction,optical reflectance and numerical image analysis to determine all five crystallographic parameters of numerous GBs in samples with through-thickness *** demonstrate the technique by measuring the crystallographic character of about 1,000 individual GBs in aluminum in a single *** method enables cost-and time-effective assembly of crystallography–property databases for thousands of individual *** databases are essential for identifying GB constitutive relations and for predicting GB-related behaviours of polycrystalline solids.

关键词： character constitutive determining

Optimization of Gas Chromatography-electron Ionization-tandem Mass Spectrometry for determining Toxic Non-ortho Polychlorinated Biphenyls in Breast Milk

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2020年第1期33卷 58-61页

作者： Iva Simic Gordana Jovanovic Snjezana Herceg Romanic Darija Klincic Marijana Matek Saric Aleksandar Popovic Institute for Medical Research and Occupational Health Ksaverska cesta 2PO Box 29110001 ZagrebCroatia Institute of Physics Belgrade National Institute of the Republic of SerbiaUniversity of BelgradePregrevica 11811080 BelgradeSerbia Department of Health Studies University of ZadarSplitska 123000 ZadarCroatia Faculty of Chemistry University of BelgradeStudentski trg 12-1611000 BelgradeSerbia

One of the most commonly used non-invasive methods for assessing human exposure to pollution is the analysis of human *** milk analyses help estimate the exposure of infants[1].This is why breast milk is receives scientific interest,and various methods for determining different pollutants from the environment are being developed[2,3].

关键词： Optimization Gas Chromatography-electron Ionization-tandem Mass Spectrometry determining Toxic Non-ortho Polychlorinated Biphenyls Breast Milk

APPROACHES determining EVAPOTRANSPIRATION OF A NATURAL SECONDARY WHITE BIRCH FOREST

在线全文

学校读者我要写书评

暂无评论

Journal of Northeast Forestry University 1994年第1期5卷 18-22页

作者：任青山 Northeast Forestry University China

Evapotranspiration of a natural secondary white birch (Betula populifolia)forest in Maoershan Ecological Station was determined by water balance method, heat balance method and water and heat combination method. Results showed that the total evapotranspiration of the forest in the growing season was 3. 6mm/d. of which evapotrans piration from canopy xvas 2. 91 mm/d and that from forest floor was 0. 57 mm/d. and that in the non-growing season was 0. 8 mm/d.

关键词： White birch Evapotranspiration determining method

RATE－determining　STEP　IN　OLEFIN　HYDROFORMYLATION　OVER　SUPPORTED　AQUEOUS－PHASE　CATALYSTS

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1994年第4期5卷 291-294页

作者： You Zhu YUAN Yi Quan YANG Jin Lai XU Hong Bin ZHANG and Khi Rui TSAI(Deportment of Chemistry Institute of Physical Chemistry Xiamen University Xiamen 361005)

A series of olefin hydroformylations over supported aqueous-phase rhodium catalyst with the substitUtion of CO/D2 for CO/H2 were cAned out to study the isotope effects of deuterium. The rate of aldehyde formation in CO/D2 was about 1.3 times faster than that in COns2, indicating that the aldehyde formation shows noticeable inverse deuterium isotope effect over SAP catalyst. The results of in-situIR stUdy of ethylene hydroformylation suggest that the reaction rate of acylhydrogenolysis forming aldehyde is the slowest one. It may be inferred from these results that the rate-determining step involved\in aldehyde formation is very probably astep ofhydrogenation.

关键词： STEP determining OLEFIN HYDROFORMYLATION CATALYSTS AQUEOUS

A high-throughput framework for determining adsorption energies on solid surfaces

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2017年第1期3卷 357-360页

作者： Joseph H.Montoya Kristin A.Persson Lawrence Berkeley National Laboratory 1 Cyclotron RoadBerkeleyCA 94720USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCA 94720USA

In this work,we present a high-throughput workflow for calculation of adsorption energies on solid surfaces using density functional *** open-source computational tools from the Materials Project infrastructure,we automate the procedure of constructing symmetrically distinct adsorbate configurations for arbitrary *** algorithms are further used to construct and run workflows in a standard,automated way such that user intervention in the simulation procedure is *** validate our approach,we compare results from our workflow to previous experimental and theoretical benchmarks from the CE27 database of chemisorption energies on solid *** benchmarks also illustrate how the task of performing and managing over 200 individual density functional theory calculations may be reduced to a single submission procedure and subsequent *** enabling more efficient high-throughput computations of adsorption energies,these tools will accelerate theory-guided discovery of advanced materials for applications in catalysis and surface science.

关键词： theory. adsorption determining

THEORY OF ADSORPTION ON CO-PRECIPITATION OF NONPOTENTIAL-determining IONS

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 1982年第1期27卷 33-38页

作者：艾宏韬 Zhengzhou Food Institute

This paper suggests on the basis of researches on classification of ionic adsorption a model for adsorption on co-precipitation of nonpolential-determining ions.1. Every potential-determining ion on the surface of a s... 详细信息

关键词： determining centre adsorbed ionic isotherm umber milling saturated salts familiar

A Dynamic Analysis on determining of Housing Demand： A Comparison for Turkey, Hungary, and UK

在线全文

学校读者我要写书评

暂无评论

Management Studies 2014年第3期2卷 179-190页

作者： Selahattin Bekmez Ash Ozpolat University of Gaziantep Gaziantep Turkey

Housing is both good and investment assets so that it plays an important role in the economy. Housing also can be characterized the most complex economic good because of its durability, heterogeneity, locational fixity, the possibility to raise loans against housing collateral, and the effect on well-developed secondary markets. On the other hand, income distribution, socio-economic justice, and regional disparities imply that housing market is an important concept for social and cultural transformation. In this study, the determinants of housing demand were compared for countries. These countries are selected according to economic situation： Turkey, Hungary, and United Kingdom. As a scope of this, the dynamic relationship between the housing demand and variables determining the housing demand in Turkey, Hungary, and UK has been analyzed. The model estimated uses quarterly data from January 2002 to January 2014. Building permits has been considered as housing demand. The other variables used for determining the housing demand are GDP, monetary aggregate, interest rate, and share prices. The long term relationship among variables has been analyzed with Vector Autoregressive Model （VAR） as impulse response and variance decomposition. The findings indicate that determining of housing demand changes according to economic and financial components such as government policies, mortgage system, consumer choice, tax, and subsidy in selected countries. All variables play an important role in housing demand, although the level of their impacts varies.

关键词： regional analysis housing mar^t the determining of housing demand VAR analysis impulse response variance decomposition

Global Existence, Uniqueness of Weak Solutions and determining Functionals for Nonlinear Wave Equations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Pure Mathematics 2013年第5期3卷 451-457页

作者： ülkü Dinlemez Department of Mathematics Gazi University Ankara Turkey

We consider the initial-boundary value problem for a nonlinear wave equation with strong structural damping and nonlinear source terms in IR. We prove the global existence and uniqueness of weak solutions of the problem and then we will study the determining modes on the phase space by using energy methods and the concept of the completeness defect.

关键词： Global Existence Uniqueness determining Modes