用镍盐制备纳米级镍粉

用7水硫酸镍与还原剂次亚磷酸钠反应,制备纳米级镍粉。用40mlC(Niso_4)=1.145mol/l的溶液(此时用氨水调PH=5.0)与30ML(N_aH_2Po_2)=1.1mol/l的溶淮反应。反应过程中温度控制在60-70℃,次亚磷钠溶液加入的速度为:100ml/min,搅拌强度150r/min。制备出纳米级镍粉收率在95％左右。XRD检测结果表明产物为单质镍;TEM检查结果表明纳米级镍粉的粒径为10-70nm。     

Ce_(0.6)Zr_(0.4)O_2/γ-Al_2O_3复合粉体的制备及其结构研究

以氯氧化锆、硝酸铈、硝酸铝为原料,采用化学沉淀法在经过扩孔处理的γ-Al2O3基载体上制备出Ce0.6Zr0.4O2/γ-Al2O3复合粉体。为有效去除水分,减少粉体团聚,采用正丁醇与粉体共沸蒸馏。采用XRD技术对所得粉体的晶型及相结构进行了表征。结果表明:Ce0.6Zr0.4O2/γ-Al2O3复合粉体中CeO2为立方晶型,随着焙烧温度的升高,样品的衍射峰依次变强,半高宽变窄,说明晶粒变大,晶体的完整性变好。     

浅谈人本电子健康

文章从一个公民的视角剖析了三聚氰胺奶粉事件,提出利用突发公共卫生事件倡导和推进人本电子健康事 业的设想。并进一步提出,人本电子健康将是21 世纪生命科学技术、信息通讯技术和人文科学发展大融合的产物,是以 个人的健康权为中心,立足家庭、面向全人口和生命全过程的电子健康,其最核心的基础构件是综合性的家庭电子健康 档案。发展人本电子健康的关键是公民的赋权与赋能。     

苦荞营养粉的研制

本文采用苦荞面粉、大豆粉、黄精、甘草和安赛蜜,通过适宜的工艺制作,得到苦荞含量高、口感舒适、加工方便的苦荞营养粉。     

Evaluation and application of an efficient plant DNA extraction protocol for laboratory and field testing

Nucleic acids in plant tissue lysates can be captured quickly by a cellulose filter paper and prepared for amplification after a quick purification.In this study,a published filter paper strip method was modified by sticking the filter paper on a polyvinyl chloride resin(PVC)sheet.This modified method is named EZ-D,for EASY DNA extraction.Compared with the original cetyl trimethylammonium bromide(CTAB)method,DNA extracted by EZ-D is more efficient in polymerase chain reaction(PCR)amplification due to the more stable performance of the EZ-D stick.The EZ-D method is also faster,easier,and cheaper.PCR analyses showed that DNA extracted from several types of plant tissues by EZ-D was appropriate for specific identification of biological samples.A regular PCR reaction can detect the EZ-D-extracted DNA template at concentration as low as 0.1 ng/μL.Evaluation of the EZ-D showed that DNA extracts could be successfully amplified by PCR reaction for DNA fragments up to 3000 bp in length and up to 80%in GC content.EZ-D was successfully used for DNA extraction from a variety of plant species and plant tissues.Moreover,when EZ-D was combined with the loop-mediated isothermal amplification(LAMP)method,DNA identification of biological samples could be achieved without the need for specialized equipment.As an optimized DNA purification method,EZ-D shows great advantages in application and can be used widely in laboratories where equipment is limited and rapid results are required.     

熔盐法合成无机粉体材料

熔盐法是一种制备无机粉体材料的新方法．本文简要说明了熔盐合成法的原理和特点,从合成颗粒状氧化物粉体、片状氧化物、针棒状氧化物等方面综述了该方法的研究进展,并概述了熔盐合成法尚存在的问题。     

钢液真空循环精炼过程的物理模拟

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ａｓａｓｅｃｏｎｄａｒｙｓｔｅｅｌｍａｋｉｎｇｔｅｃｈｎｏｌｏｇｙ ,ｔｈｅＲＨ(Ｒｕｈｒｓｔａｈｌ Ｈｅｒａｅｕｓ)ｖａｃｕｕｍｃｉｒｃｕｌａｔｉｏｎｒｅｆｉｎｉｎｇｐｒｏ ｃｅｓｓｈａｓｂｅｅｎａｐｐｌｉｅｄｗｉｄｅｌｙａｎｄｄｅｖｅｌｏｐｅｄｒａｐｉｄｌｙｉｎｐｒｅｖｉｏｕｓｆｏｕｒｄｅｃａｄｅｓ .Ｗｉｔｈａｃｏｎｔｉｎｕｏｕｓｌｙｇｒｏｗｉｎｇｄｅｍａｎｄｆｏｒｈｉｇｈｑｕａｌｉｔｙａｎｄｈｉｇｈｌｙｃｌｅａｎｓｔｅｅｌ,ｉｔｈａｓｎｏｗｂｅｃｏｍｅ ,ｔｏａｃｏｎｓ…     

表面处理工艺在修复脱粉机分配盘的应用

引进德国进口二手设备KSΦ5．7M干式脱粉机，经修复后用于潘三矿原煤脱粉；介绍了修复脱粉机分配盘组件的表面处理工艺过程和如何做好氧化处理前表面的准备、氧化处理、涂油等工序流程；使用效果表明，分配盘的耐比性和耐磨性较好，为修复进口脱粉机和推广脱粉工艺作了有益的尝试。     

二元合金系纯金属粉末烧结工艺研究

为了研究铝基复合材料烧结工艺,利用高温光学显微镜对Al-Mg和Al-Cu等二元合金系进行了原位烧结观察.从颗粒曲率半径、升温方式、加热方式等方面研究了几种烧结工艺对烧结过程的影响.这些研究对在节约能源、降低成本的基础上改进烧结工艺具有重要的现实意义.     

石英玻璃粉末析晶的析晶特性

本文采用UV、IR和XRD方法研究了用于制备航天器通讯窗口及防热部件的石英玻璃粉末在不同气氛下的析晶行为,结果表明,石英玻璃粉末的析晶产物与块状石英玻璃相同,均为β-方石英.但析晶倾向高于块状石英玻璃,析晶开始温度,析晶达到最大值温度明显降低.与块状石英玻璃相比,热处理气氛中温度对粉末析晶促进作用减弱,而还原气氛对析晶抑制作用加强.石英玻璃粉末析晶主要由质点重排控制.