Characterisation of orientation noise for EBSP technique

ＩｎｔｒｏｄｕｃｔｉｏｎＥｌｅｃｔｒｏｎｂａｃｋ ｓｃａｔｔｅｒｅｄｐａｔｔｅｒｎ (ＥＢＳＰ)ａｎａｌｙｓｉｓｉｎｔｈｅｓｃａｎｎｉｎｇｅｌｅｃｔｒｏｎｍｉｃｒｏｓｃｏｐｅａｓａｔｏｏｌｆｏｒｉｎｖｅｓｔｉｇａｔｉｎｇｍｉｃｒｏｓｔｒｕｃｔｕｒｅｈａｓｂｅｅｎｗｅｌｌｅｓｔａｂｌｉｓｈｅｄ .Ｔｈｉｓｔｅｃｈｎｉｑｕｅｈａｓｍａｎｙａｄｖａｎｔａｇｅｓｏｖｅｒｔｒａｎｓｍｉｓｓｉｏｎｅｌｅｃｔｒｏｎｍｉｃｒｏｓｃｏｐｙ .Ａｄｒａｗｂａｃｋｏｆｔｈｉｓｔｅｃｈｎｉｑｕｅｉｓｔｈｅａｎｇｕｌａｒｒｅｓｏ…     

土坝防渗膜的设计与施工中应注意的问题

土工膜作为新型防渗材料有不可替代的优点，同一般防渗体相比具有防渗效果好，价格便宜，质地好，对不均匀沉陷适应性强等特点。特别适用于无粘土地区。土工膜理论上的性能大致已被人们所掌握，但其具体设计结构和施工方法尚有不少细节需周密处理     

长白山天池中的热水带

长白山天池，象一颗闪亮的明珠镶嵌在其山之巅。天池形状如盆，南北民4．85公里，东西宽3．55公里，集水面积9．82平方公里，湖水面周年13．11公里，平均水深204米，最深处达373米，总蓄水量为20亿立方米，湖面海拔2194米，是山顶湖泊。天池水冷闻名中外，但地中有热水上涌则鲜为人知。在天池的东北侧水面上，有两条热水带，水温可高达42℃，它们各长的200米，宽约50米。夏天可见到上涌的热水在湖面上翻花，冬季可见到两条热气蒸升的不冻带，当靠近热水带附近，还可听到地下热水上源时发出“嘟嘟”的响声。人们不禁要问，在这样大的天然湖泊…     

Investigation of recystallization behavior of IF—steel using EBSD technique

The orientation nucleation behavior of γ－fiber of IF-steel was studied using high resolution electron back scattering diffraction (EBSD)technique during annealing.The γ-Fiber nucleation occurs in the deformation bands of γ-fiber and other orientationdeformation bands produce scattering orientation grains.     

Trace elements in particles of motor vehicle exhaust in Shanghai

A nuclear microprobe with high spatial resolution and high analytical sensitivity was applied to analyze trace elements,especially lead,in vehicle exhaust of Shanghai city.The result shows that the chemical composition and its corresponding x-ray relative intensity are different among different vehicle exhausts.There are many kinds of metal elements in particles of vehicle exhaust.most are harmful to people,such as Ti,Cr,Mn,Pb,etc.We found that the lead concentration was 6820μg/g and the bromine concentration was 5300μg/g in the exhaust from Santana using leaded gasoline(SULG).which is higher than any other kinds of vehicle exhausts.We have also detected the minimum lead in the particles of unleaded gasoline and its content varies from one to another.Its mean concentration was 450μg/g and the highest reached 6210μg/g.The unleaded gasoline‘s Pb existed in the whole particle while the leaded gasoline‘s enriched in the surface of the particle and was more harmful to the human beings.     

GJB548修订中先进性与可行性的综合考虑

结合美军标准微电子器件试验方法和程序的发展变化以及我国集成电路生产和研制的现状与国情，论述了GJB548的修订原则和协调先进性与可行性的综合处理方法及体会。     

基于ＰＣ机的高分辨率海上地震数据的采集和处理

我们使用一台简单的ＰＣ机的采集和处理系统改进了高分辨率的海海地震数据的质量，该系统由一台ＰＣ机，一个Ａ／Ｄ转换器和一台磁－光盘机组成，该系统被设计为以每秒多达６００００个采样的单道数据进行采集，并用一个简单程序完成地震数据处理，试验在东朝鲜海南部浦项附近进行，试验用的地震系统为空气枪和一台３.5kHz海底地剖面仪，分析了震源的频谱特征，进行了包括增恢复，反褶积，带通滤波和海浪滤波的简单数字信号处理，该系统处理的地震剖面质量与模拟剖面相比大有提高，用基于ＰＣ机的系统采集，处理高分辨率浅海地震资料即经济又适用。     

The TDCPR Management Mode of Engineering Equipment

The Three Gorges Project is a very large project,and its structure is very complex.Interna-tional advanced engineering equipment is broadly used.The state of equipment running directly influ-ences project building qualities and limited time.According to the factud conditions of the Three Gor-ges Project,the characteristics of engineering equipment are analyzed.At the same time ,some theories about equipment management are induced ,and the TDCPR management mode of engineering equip-ment of the Three Gorges Project is put forwared in order to gain the aim of managing and using equip-ment well and speeding up the project construction.     

毫微过滤和电渗析联合法处理纸浆漂白废水

采用毫微过滤（nanofiltration）和电渗析相结合的方法，一台0．5m3/h地装置可脱除95％污染的有毒的有机卤化物、有毒的有机化合物、盐类和色素，水可重复利用。而普通的生物处理法仅能减少氯化有机物质50％左右。新工艺中段废水先经絮凝和过滤预处理以脱除纤维。接着，螺旋形和管形构型的有机和无机毫微过滤膜在ZXIc‘Pa的压力和40℃温度下进行操作以脱除95％的有毒的有机卤化物和有毒的有机化合物以及40％的盐类，渗透量为150l／h·m’。然后，滤波进入装有阴离子交换膜和阳离子交换膜的电渗析装置，在那里盐含量从1500mg／l减少至60mg…     

解决水荒 抢救西安

中国城市水荒，危及九州大地，就沿海城市而言，国家耗费巨资引滦入津、引黄济青，引大入秦，以深补港（深圳水源补给香港）等等，那么，地处西北最大的首府西安，城市供水状况如何呢？人水丰盈已成历史——水源奇缺污染厂重西安地处八百里秦）11中央，四塞险因，沃野千里，物产丰富，气候宜人，先后有周秦汉唐等十个朝代建都，历史一千余忙，成为中国古代政治经济文化中心，创造了光辉灿烂的文化，留下了大量的文物和稀世珍宝，被誉为中华历史文化的“天然博物馆，”与开罗、雅典、罗马并列为世界四大文明古都。成为驰名中外的历史古城，世…