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Preparation and biological evaluations of PLA/chitosan composite materials 被引量:1
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《Chinese Journal of Biomedical Engineering(English Edition)》 2001年第4期175-177,共3页
关键词 PLA Preparation and biological evaluations of PLA/chitosan composite materials
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Literature review of material evaluation 被引量:2
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作者 ZHANG Ya-ni 《Sino-US English Teaching》 2007年第6期28-31,共4页
A literature-based review concerning why and how to evaluate language-teaching materials is presented with the purpose to facilitate English Language Teachers' awareness of material evaluation and assist their conduc... A literature-based review concerning why and how to evaluate language-teaching materials is presented with the purpose to facilitate English Language Teachers' awareness of material evaluation and assist their conduction. 展开更多
关键词 material evaluation evaluation criteria learners' needs
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College English Teaching Materials in China: A Critical Review
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作者 ZHANG Ying LIU Lin 《Sino-US English Teaching》 2014年第10期755-761,共7页
Quality English language teaching (ELT) materials play a key role in achieving teaching objectives. This paper first provides a brief historical overview of the development of college English teaching materials in C... Quality English language teaching (ELT) materials play a key role in achieving teaching objectives. This paper first provides a brief historical overview of the development of college English teaching materials in China. Then by investigating studies on college English teaching materials for non-English major students from different perspectives, suggestions are proposed to provide guidance for effective ELT materials writing and evaluation: (1) Language corpora, providing empirical data concerning language usage, have a distinctive advantage in ELT materials writing and evaluation; (2) principles for ESP materials writing are developed; and (3) a systematic approach combining qualitative analysis with quantitative analysis to materials evaluation is suggested to ensure the validity and reliability of materials evaluation 展开更多
关键词 English language teaching (ELT) materials materials writing materials evaluation
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Evaluation on Diseases Resistance of Cotton Material and Its Utilization
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作者 ZENG Hua-lan,HE Lian,YE Peng-sheng,ZHANG Yu,WEI Shu-gu(Industrial Crops Research Institute,Sichuan Academy of Agricultural Science,Jianyang 641400,Sichuan,China) 《棉花学报》 CSCD 北大核心 2008年第S1期102-,共1页
Fusarium wilt and Verticillium wilt are important worldwide fungal diseases on cotton that cause damage to yield and quality.The pathogens survive in soil as microsclerotia for many years,and
关键词 evaluation on Diseases Resistance of Cotton Material and Its Utilization RVH
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Analysis on Earthquake Emergency Material Preparation Demand Based on Earthquake Risk Evaluation Taking Datong City of Shanxi Province as an Example
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作者 Yang Bin Ma Zhaohui Hao Zhiyong 《International Journal of Technology Management》 2014年第3期40-43,共4页
The earthqnake emergency material preparation demand analysis can provide the scientific basis for all levels of governments to conduct reasonable and unified configuration of the emergency preparation resources, in o... The earthqnake emergency material preparation demand analysis can provide the scientific basis for all levels of governments to conduct reasonable and unified configuration of the emergency preparation resources, in order to further optimize the earthquake emergency ability construction to provide reference. This paper takes Datong City of Shanxi Province as an example, using the earthquake risk evaluation method, adopting the deterministic method and probabilistic method to conduct earthquake danger analysis, combined with the earthquake emergency rescue case and the previous scholars' research achievements, in order to study and analyze the earthquake emergency material preparation demand in different earthquake dangers. 展开更多
关键词 earthquake: risk evaluation emergency material preparation demand
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Analyze of histopathelogical for medical devices and biological material on biocompatibility evaluation
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《Chinese Journal of Biomedical Engineering(English Edition)》 2001年第4期197-199,共3页
关键词 Analyze of histopathelogical for medical devices and biological material on biocompatibility evaluation
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ULTRASONIC INPUT OUTPUT CHARACTERISTICS FOR TRANSMITTING AND RECEIVING CONTACT TYPE TRANSDUCERS COUPLED TO A TIMOSHENKO BEAM
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作者 Liu Tierang Department of Aircraft Engineering,NUAA29 Yudao Street, Nanjing 210016, P. R. China) 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 1996年第1期49-56,共8页
Acousto ultrasonic input output characteristics for transmitting and receiving contact type transducers coupled to a Timoshenko beam waveguide are considered. By means of a multiple integral transform method and co... Acousto ultrasonic input output characteristics for transmitting and receiving contact type transducers coupled to a Timoshenko beam waveguide are considered. By means of a multiple integral transform method and contour integration technique, the spectral response of the normal contact force between the receiving transducer and the wave guide, due to an arbitrary input pulse excited by the transmitting transducer, is expressed as a form of explicitly physical interpretations. Time histories of the response are then obtained through the inversion of the spectra by a fast Fourier transform (FFT) method. Finally, some numerical results are presented in diagrams, from which the effects on the mass of the receiver, the distance between the two transducers, and the input pulse width on the output are discussed. From the numerical calculation and the nature of the whole analysis it is shown that the analytical method presented in this paper is not only effective but also extendible to the more general cases. 展开更多
关键词 stress wave ULTRASONIC transducers stress wave factor material evaluation
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A call for the reengineering of Iranian ESP textbooks
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作者 Abutaleb Iranmehr Seyyed Mahdi Erfani Hossein Davari 《Sino-US English Teaching》 2010年第7期23-30,34,共9页
Having paramount importance in any ESP (English for Special Purpose) classroom, textbooks are known as one of the most visible parts of any ESP teaching program. Enjoying an undeniable position, essentially in the s... Having paramount importance in any ESP (English for Special Purpose) classroom, textbooks are known as one of the most visible parts of any ESP teaching program. Enjoying an undeniable position, essentially in the societies where English is used as the second or foreign language, such textbooks should have some features on which the needs and objectives of the ESP teaching program are met. Concerning such an importance, this paper intends to evaluate critically the current status of the Iranian ESP textbooks developed and published by The Organization for Research and Compiling University Textbooks in Humanities (SAMT), as the main governmental organization in studying and compiling ESP university textbooks. Obtaining such an end, it tries: (1) to present the importance of ESP materials development; (2) to provide a clear picture of ESP and ESP materials development in Iran; (3) to introduce the essential drawbacks which such textbooks suffer from; and (4) to present some practical suggestions and solutions to tackle the significant problems and drawbacks of the current ESP textbooks practiced in the Iranian academic setting. 展开更多
关键词 ESP textbooks Iranian academic setting materials evaluation
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Relationships between femoral strength evaluated by nonlinear finite element analysis and BMD,material distribution and geometric morphology
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作者 He Gong1,Linwei Lv1,Rui Zhang1,Dong Zhu3,Ming Zhang2(1.Department of Engineering Mechanics,Jilin University,Changchun 130025,P.R.China 2.Department of Health Technology and Informatics,The Hong Kong Polytechnic University,Hong Kong,China 3.Department of Orthopedic Surgery,No.1 Hospital,Jilin University,Changchun 130021,China) 《医用生物力学》 EI CAS CSCD 2009年第S1期66-66,共1页
Precisely quantifying the strength of the proximal femur and accurately assessing hip fracture risk would enable those at high risk to be identified so that preventive interventions could be taken.Development of bette... Precisely quantifying the strength of the proximal femur and accurately assessing hip fracture risk would enable those at high risk to be identified so that preventive interventions could be taken.Development of better measures of femoral strength using the clinically 展开更多
关键词 BMD Relationships between femoral strength evaluated by nonlinear finite element analysis and BMD material distribution and geometric morphology FEA
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