新农村建设进程监测及其动态类型——以岱岳区为例

在新农村建设水平评价的基础上,提出了新农村建设进程动态监测的方法和动态类型划分方法,并在泰安市岱岳区进行了实证.结果表明,研究方法可行,结果对当地新农村建设有实际指导意义.     

围化疗期病人恶心呕吐的预防与护理

化疗是治疗肿瘤的重要手段之一,但是大多数化疗药物为细胞毒剂,在正常细胞和肿瘤细胞之间缺乏选择[1],在杀死肿瘤细胞的同时对正常组织细胞有很大的损害作用,导致治疗中产生恶心呕吐等副作用,并常引起脱水、代谢紊乱等不良后果,让病人非常痛苦甚至中断治疗,严重者会影响化疗的正常进行。随着社会不断发展,人们对健康需求不断提高、追求生理、心理、社会和谐统一是健康生活的最高境界[2]。本人根据临床实践,围绕化疗前后如何做好患者恶心呕吐的预防和护理进行探讨。     

Effect of temperature and moisture on the luminescence properties of silicone filled with YAG phosphor

In order to determine the environmental effects on the luminescence properties of a phosphor layer for high-power light emitting diodes, a high humidity and temperature test (85 ℃/85%RH) and a thermal aging test (85 ℃) were performed on silicone/YAG phosphor composites. The luminescence properties of silicone/phosphor composites are monitored by a fluorescence spectrometer. The results show that high temperature could result in an increase in conversion efficiency of composites during the early aging stage and red shift of YAG phosphor; and high humidity could result in a significant decrease in conversion efficiency of composites while having a small influence upon the optimal excitation wavelength of the YAG phosphor.     

Reliability test and failure analysis of high power LED packages

A new type application specific light emitting diode(LED) package(ASLP) with freeform polycarbonate lens for street lighting is developed,whose manufacturing processes are compatible with a typical LED packaging process.The reliability test methods and failure criterions from different vendors are reviewed and compared.It is found that test methods and failure criterions are quite different.The rapid reliability assessment standards are urgently needed for the LED industry.85℃/85 RH with 700 mA is used to test our LED modules with three other vendors for 1000 h,showing no visible degradation in optical performance for our modules,with two other vendors showing significant degradation.Some failure analysis methods such as C-SAM,Nano X-ray CT and optical microscope are used for LED packages.Some failure mechanisms such as delaminations and cracks are detected in the LED packages after the accelerated reliability testing.The finite element simulation method is helpful for the failure analysis and design of the reliability of the LED packaging.One example is used to show one currently used module in industry is vulnerable and may not easily pass the harsh thermal cycle testing.     

新型无甲醛防皱整理剂2-膦基丁烷-1,2,4-三羧酸的研究

对2-膦基丁烷-1,2,4-三羧酸(PBTCA)在棉织物上的抗皱作用进行了研究,分析了整理剂用量、催化剂与添加剂的种类和用量、焙烘温度和时间等对整理效果的影响,确定了最佳工艺条件.研究结果表明,含磷多元羧酸PBTCA对纯棉织物防皱整理能获得理想效果,强力保留率基本达到要求.在整理剂中加入三乙醇胺作为辅助催化剂,可明显提高织物的折皱回复角、强力和白度.最后,考察了整理效果的耐洗涤性能以及织物品种对整理效果的影响.     

高通量测序技术研究高糖饮食对小鼠肠道菌群的影响

目的比较高糖饮食和普通饲料喂养对小鼠肠道菌群的影响。方法选取16只C57BL/6J小鼠,经适应喂养1周后,随机分为正常组和高糖组,于第5周末,对小鼠粪便菌群16S r RNA的V1-V3区进行扩增,Miseq高通量测序平台测定其基因序列,与silva数据库中微生物基因序列进行比对、分类。结果研究发现:尽管差异性不显著,高糖饮食组小鼠体重和血糖值较正常饮食小鼠有明显升高;正常饮食小鼠粪便菌群多样性高于高糖饮食的小鼠;高糖组粪便中含有大量的Firmicutes(厚壁菌门),较正常组显著升高;高糖组Bacteroidetes(拟杆菌门)数量显著低于正常组;在属的水平上,正常组和高糖组粪便菌群中含量最高的是Allobaculum,其含量无显著差异;而两组在Lactobacillus和S24-7_norank的含量上存在着显著差异。结论饮食类型对肠道菌群有着显著的影响,因而可通过调整饮食结构改善肠道菌群。     

标准、规范发布（修订）信息（续）

(接2002第6期《中国建筑金属结构》杂志P35)75.JC/T79-2001《天然大理石建筑板材》 代替JC79-9276.JC/T204-2001《天然花岗石荒料》     

标准规范(发布、修订)信息

(接2002年第6期《中国建筑金属结构》杂志P35)75 .JC/竹9一2001《天然大理石建筑板材》代 替JC79一9276 .Jc/T204一2001《天然花岗石荒料》代替JC 一204一9277.JC/代02一2001《天然大理石荒料》代替JC 一202一9278 .GB/咒28一2002《金属材料室温拉伸试验方 法》代替GB/代28一1987 CB/T3076一1982 GB厂r6397一198679.GB/T7106一2002《建筑外窗抗风压性能分级及 检测方法》代替GB/”106一198680.GB/T7108一2002《建筑外窗气密性能分级及检 测方法》代替GB/竹187一198681 .GB/竹108一2002《建筑外窗水密性能分级及检 测方法》代…     

微细粒嵌布铁矿絮凝浮选基础理论研究综述

综合概述了微细粒嵌布铁矿在不同药剂体系下的絮凝行为及絮凝浮选基础理论的研究结果，提出了该研究领域存在的问题及解决问题的对策。     

环保节能型双层玻璃幕墙设计新概念

双层玻璃幕墙（又称热通道幕墙、气循环幕墙、呼吸幕墙、生态幕墙、绿色幕墙、健康幕墙等）是指由一层外层玻璃幕墙和一层内层玻璃幕墙（或玻璃窗）组成的双层玻璃幕墙，两者之间留有一空腔（通道），这个通道称为热通道。