计算梁和框架结构设计灵敏度的一种方法

提出了计算梁和框架结构设计灵敏度的一种方法．该方法可以直接在大型通用程序（如ＳＡＰＳ，ＮＡＳＴＲＡＮ等）上实施，而不用设计者重新编制程序．计算结果表明，采用本文提出的方法计算梁和框架结构的设计灵敏度，结果精确，计算效率高．     

藏医药学实验教学模式改革探讨

通过实验、实习、实践教学使学生认识、了解和熟悉藏医人体三因(隆、赤巴、培根)和各组织器官的形态、结构、功能以及在疾病状态下的改变,使学生在学习的同时能够进行藏药药效物质基础、传统方剂配伍规律和藏药炮制技术等的初步研究。在充分掌握传统藏医药对人体、疾病、治疗三者辩证统一认识的基础上,了解现代医学实验研究的基本思路、原则和方法,逐步培养了学生的创新思维和初步的科学研究能力。根据藏医药学学科实践性强的特点,把藏医药传统"师带徒"临床实习、野外采认药等实践活动与现代医学室内实验相结合,构建起由"实验+实习+实践"所组成的"三实"结合模式,使学生系统地掌握藏医药实验教学的内容。     

粤北牛岱辉绿岩脉的地球化学特征及其成因研究

牛岱辉绿岩脉位于粤北诸广岩体南部.牛岱辉绿岩具有低SiO2 (45.04％ ～48.64％)、高TiO2( 2.02％～ 3.23％)和TFeO含量(17.00％～ 19.80％)、富集K,Rb,Ba等大离子亲石元素和La,Nd,Eu,Tb等稀土元素、Nb-Ta亏损轻微、稀土总量较高(112.1×10-6 ～132.7...     

Design of a novel optically stimulated luminescent dosimeter using alkaline earth sulfides doped with SrS:Eu,Sm materials

Optically stimulated luminescence （OSL） is the luminescence emitted from an irradiated insulator or semiconductor during exposure to light. The OSL intensity is a function of the dose of radiation absorbed by the sample and thus can be used as the basis of a radiation dosimetry method. Alkaline earth sulfides doped with rare-earth elements such as Ce, Sm and Eu are OSL dosimeters having very high sensitivity, and the OSL with a short time constant is separated from the stimulated light. In this paper, a novel OSL dosimeter designed with SrS：Eu,Sm materials is described. The dosimeter takes advantage of the characteristics of charge trapping materials SrS：Eu,Sm that exhibit OSL. The measuring range of the dosimeter is from 0.01 to 100Gy. The equipment, which is relatively simple and small in size, is promising for applications in space exploration and high dose radiation dosimetry.