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当代大学生核心人格结构的研究

心理学探新 2002年第4期22卷 24-28页

作者：许燕北京师范大学心理学院北京100875

该研究通过 2 98名大学生的调查 ,用质的研究方法对大学生核心人格进行了分析。结果表明 :北京大学生核心人格结构由七因素构成 ,依次为敢为性、宜人性、道德感、开放性、责任感、务实性和情绪性。

关键词：大学生核心人格结构自我描述法道德感宜人性敢为性责任感情绪性

Characterization of surface damage of a solid plate under tensile loading using nonlinear Rayleigh waves

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Theoretical & Applied Mechanics Letters 2011年第5期1卷 22-26页

作者： Guoshuang Shui,and Yuesheng Wang department of Engineering Mechanics,beijing Jiaotong University,beijing 10004.,china department of Engineering Mechanics Beijing Jiaotong University Beijing 100044 China

This letter reports experimental observation of a direct correlation between the acoustic nonlinearity parameter (NP) measured with nonlinear Rayleigh waves and the accumulation of plasticity damage in an AZ31 magnesium alloy plate *** waves are generated and detected with wedge transducers,and the NPs are measured at different stress *** results show that there is a significant increase in the NPs with monotonic tensile loads surpassing the material’s yielding *** research suggests an effective nondestructive evaluation method to track the surface damage in metals.

关键词： nonlinear Rayleigh wave nonlinearity parameter surface damage ultrasonic nondestructive evaluation

An　Improved　Preparation　of　2,5-Dimethoxy-tetrahydrofuran

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Chemical Research in Chinese Universities 1997年第1期13卷 91-92页

作者： LI Xiao li and CHEN Qing qi (department of chemistry, Changchun normal College, Changchun, 130032) (Institut fur Chemie, Johannes Kepler Universitat Linz, A 4.4. Linz, Austria) CHANGCHUN normal COLL DEPT CHEMCHANGCHUN 130032PEOPLES R CHINA JOHANNES KEPLER UNIV INST CHEMA-4040 LINZAUSTRIA

ＡｎＩｍｐｒｏｖｅｄＰｒｅｐａｒａｔｉｏｎｏｆ２，５┐Ｄｉｍｅｔｈｏｘｙ┐ｔｅｔｒａｈｙｄｒｏｆｕｒａｎ＊Ｔｏｗｈｏｍｃｏｒｒｅｓｐｏｎｄｅｎｃｅｓｈｏｕｌｄｂｅａｄｄｒｅｓｅｄ．ＬＩＸｉａｏ－ｌｉａｎｄＣＨＥＮＱｉ... 详细信息

ＡｎＩｍｐｒｏｖｅｄＰｒｅｐａｒａｔｉｏｎｏｆ２，５┐Ｄｉｍｅｔｈｏｘｙ┐ｔｅｔｒａｈｙｄｒｏｆｕｒａｎ＊Ｔｏｗｈｏｍｃｏｒｒｅｓｐｏｎｄｅｎｃｅｓｈｏｕｌｄｂｅａｄｄｒｅｓｅｄ．ＬＩＸｉａｏ－ｌｉａｎｄＣＨＥＮＱｉｎｇ－ｑｉ（Ｄｅｐａｒｔｍｅｎｔ...

关键词： Dihydro 2,5 dimethoxyfuran,2,5 Dimethoxy tetrahydrofuran Preparation

Geochemical behavior of elements at fossil sea floor water/sediment interface

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Chinese Science Bulletin 1999年第S2期44卷 232-233页

作者： ZHANG Haihua~1, XIA Yu~1, WANG Zuwei~2 and ZHOU Yongzhang~3 1. Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou 51064., china 2. department of Geography, Tianjin normal University, Tianjin 300071, china 3. department of Earth Sciences, Zhongshan University, Guangzhou 510275, china Guangzhou Institute of Geochemistry Chinese Academy of Science Guangzhou 510640 China department of Geography Tianjin Normal University Tianjin 300071 China department of Earth Sciences Zhongshan University Guangzhou 510275 China

THIS note deals with the geochemical behavior of elements near the water/sediment interface of a fossil seafloor. The Nandan-Hechi basin, located in northwest Guangxi, Southern china, is selected for exemplified study. It is an elongated basin, and developed on a Caledonian basement. Its Devonian strata hosthydrtothermally sedimentary formations, and are typical of the intra-platformal basin facies sediments oversouthern china. A steady sedimentary sequence may be observed, commonly going from carboniferouspelite at bottom, upward through bedded chert, thickly banded argillaceous limestone, thinly bandedsiliceous limestone and small lensiod argillaceous limestone in the middle, to coarse lensoid siliceousand/or argillaceous limestone at the top. The chert and some argillaceous limestone are related to hydrothermally sedimentary origin. The present study focuses on the lensoid argillaceous limestone formation. This formation contains the following characteristic sedimentary structures: small lensoid structure,vermiform structure, wave-shaped banded structure, massive structure, white framboid structure, andcage netting structure.

关键词： water/sediment interface sedimentation periodicity sedimentary geochemistry basin.

微波辅助的金属氯化物Lewis酸催化纤维素水解

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燃料化学学报 2009年第2期37卷 244-247页

作者：朱萍汤颖薛青松李剑锋路勇华东师范大学化学系上海市绿色化学与化工过程绿色化重点实验室上海200062

研究了微波辐射下四种金属氯化物Lewis酸的催化纤维素酸水解反应性能,发现CuCl2的催化性能最好。反应温度、反应时间、微波功率、催化剂用量和酸种类对纤维素水解转化率、葡萄糖和5-羟甲基糠醛(5-HMF)的选择性均有明显影响。与传统热反... 详细信息

研究了微波辐射下四种金属氯化物Lewis酸的催化纤维素酸水解反应性能,发现CuCl2的催化性能最好。反应温度、反应时间、微波功率、催化剂用量和酸种类对纤维素水解转化率、葡萄糖和5-羟甲基糠醛(5-HMF)的选择性均有明显影响。与传统热反应相比,微波辐射明显加快纤维素酸水解速率,提高葡萄糖的选择性。0.5g纤维素和15g水,在微波功率800W,温度到达225℃时立即停止反应的条件下,当CuCl2用量为0.05mmol时,纤维素转化率和葡萄糖选择性达72.6%和62.3%;当CuCl2用量为0.15mmol时,5-HMF的选择性最高为13.2%;当CuCl2用量为0.30mmol时,纤维素的转化率高达90.6%,但葡萄糖选择性只有6.7%。

关键词：纤维素微波水解葡萄糖 5-HMF

Photodissociation of benzoic acid with the α C―O fission at S1 state: a multireference theoretical investigation

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Photodissociation of benzoic acid with the α C―O fission a...

Discussion on Evolution of Land-use Planning in china

中国化学会第26届学术年会理论化学方法和应用分会场

作者： Ya-Jun Liu, Hong-Yan Xiao, Wei-Hai Fang College of chemistry, beijing normal University, beijing 100875

＜正＞Multireference complete active space self-consistent-field （CASSCF） and multireference CASSCF second-order perturbation theory （MSCASPT2） calculations were performed on the ground and a number

关键词： Keywords: benzoic acid phtodissociation CASSCF MS-CASPT2

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china City Planning Review 2009年第1期18卷 32-37页

作者： CAI Yumei,Land Planning department,Land Investigation and Planning Institute of china,beijing,P.R.china. ZHANG Wenxin,Geography and RS Science School,beijing normal University,beijing,P.R.china. ZHAO Yanwen,Resource and Environment Science College,Nanjing Agricultural University,Nanjing,P.R.china. SHI Ke

The classical definition of land-use plan was brought forward by Kent in 1964. which is"the official statement of a…legislative body which sets forth its major policies concerning desirable future physical developmen... 详细信息

关键词： farmland official statement regulations concerning

Mechanics of mechanosensitivity of cell

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医用生物力学 2009年第S1期24卷 59-60页

作者： Baohua Ji (department of Applied Mechanics,School of Aerospace,beijing Institute of Technology,beijing 100081,china)

Focal adhesions(FAs) are large,multiprotein complexs that provides linkers between cytoskeleton to the extracellular matrix(ECM).Cells sense and respond to forces through FAs to regulate a broad range of processes,suc... 详细信息

关键词： Mechanics of mechanosensitivity of cell ECM

Singularly Perturbed Solution for Nonlinear Equations of Fourth Order with Two Parameters

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Journal of Shanghai Jiaotong university(Science) 2008年第4期13卷 495-498页

作者：陈丽华莫嘉琪刘树德 department of Mathematics and Computer Science Fuqing Branch of Fujian Normal University department of Mathematics Anhui Normal Univeristy

A class of singularly perturbed boundary value problem for nonlinear equation of fourth order with two parameters is considered. Under suitable conditions, the existence and asymptotic behavior of solution for boundar... 详细信息

关键词： nonlinear two parameters singular perturbation