摘要：This study integrated instrumental and relational approaches to the teaching and learning of solids in a preservice teacher＇s class. The researcher guided the preservice teachers to gather various prisms, pyramids, and spheres to study the total surface areas and volumes. At the end of the integrated models, the test scores showed closed relationships in the concurrent instructional strategies of the integrated models. The researcher therefore, recommended the design models for the teaching and learning of solids in mathematics.

摘要：Due to the increasingly stringent standards, it is important to assess whether the proposed emission reduction will result in ambient concentrations that meet the standards. The Software for Model Attainment Test-Community Edition （SMAT-CE） is developed for demonstrating attainment of air quality standards of O3 and PM2.5. SMAT-CE improves computational efficiency and provides a number of advanced visualization and analytical functionalities on an integrated GIS platform. SMAT-CE incorporates historical measurements of air quality parameters and simulated air pollutant concentrations under a number of emission inventory scenarios to project the level of compliance to air quality standards in a targeted future year. An application case study of the software based on the U.S. National Ambient Air Quality Standards （NAAQS） shows that SMAT-CE is capable of demonstrating the air quality attainment of annual PM2.5 and 8-hour O3 for a proposed emission control policy.

摘要：Iranian Plateau between the Lesser Caucasus-Alborz Mountains on the north and Zagros-Makran Ranges on the south has several inter-mountainous depressions which were filled by Quaternary deposits. Geologic evidence implied that, the last marine conditions in some depressions such as the Dasht-e Kavir, Dasht-e Lut and Jazmourian basins, had been changed to land conditions in middle Miocene. Based on shape and elevation of the Dasht-e Kavir, Dasht-e Lut and Jazmourian plains related to sea level and geomorphology of Iranian plateau, three semi-connective artificial lakes can be constructed upon the mentioned plains by consideration of many geologic and geotechnical parameters. These artificial lakes can feed by pumping of water from Oman Sea and form a triple artificial bay which they must be connected together by two gated straits. Therefore, a possible morphotectonic idea with many advantages has suggested that it can be present as an international geotechnologic design. This design has the important environmental impacts which can be changed desert to lake sedimentary basins.

摘要：Split Hopkinson pressure bar (SHPB) has become a frequently used technique to measure the uniaxial compressive stress-strain relation of various engineering materials at high strain-rates. The accuracy of an SHPB test is based on the assumption of uniaxial and uniform stress distribution within the specimen, which, however, is not always satisfied in an actual SHPB test due to the existence of some unavoidable negative factors, e.g., interface friction constrains. Kinetic interface friction tests based on a simple device for engineering materials testing on SHPB tests are performed. A kinetic interface friction model is proposed and validated by implementing it into a numerical model. It shows that the proposed simple device is sufficient to obtain kinetic interface friction results for common SHPB tests. The kinetic friction model should be used instead of the frequently used constant friction model for more accurate numerical simulation of SHPB tests.

摘要：Pharmaceutical comprehensive study(PCS) is a new system of experimental teaching in China, which integrates multidisciplinary pharmaceutical knowledge and covers the basic process of new drug discovery. To explore the feasibility of this experiment teaching system and mode, we developed PCS as an elective course. The PCS is designed with two sections: pharmaceutical comprehensive design(PCD) and pharmaceutical comprehensive experiment(PCE). The PCD section includes literature review, comprehensive project design and oral examination. PCE can be divided into four parts: synthesis, quantitative determination, pharmacodynamic evaluation, and formulation and quality determination. Course grade was determined by experimental performance, written report, literature review, new project design and oral examination. The learning interest, experimental ability, theoretical level and literature retrieval ability, team spirit and interpersonal skills have been all significantly improved among students taking this course. A survey was administered at the end of the semester to the enrolled students. The responses were reported as percentages, and the feedback was positive. The course was highly recommended by the teaching inspection committee. This new course plays an important role in developing students’ creativity and comprehensive ability. It could help students understand the focus and features of every secondary discipline, as well as establish scientific and reasonable knowledge system. Most students can better understand the process of drug research after this course.

摘要：背景：心脏手术期间常用止血药的短期安全性问题已日益引起关注，但其对长期死亡率的影响尚缺乏相关资料。目的：比较应用赖氨酸类似物抗纤溶药（氨基已酸和氨甲环酸）、丝氨酸蛋白酶抑制剂抑肽酶和不使用止血药的3组接受冠状动脉搭桥（CABG）手术患者的长期全因死亡率。设计、地点和参与者：此项国际队列研究实施于1996年11月11日至2006年12月7日间，共纳入69个医学中心4374例患者，对来自62个中心的3876例患者CABG术后6周、6个月及其后每年（共5年）的存活率进行前瞻性评估。