氮化

GaN ; Schottky diode ; thin surface barrier model ; thermion field emission

氮化镓；肖特基二极管；表面势垒减薄模型；热电子场发射

A new fluotescence quenching method has been developed to determine nitrite in water samples. The method is based on the diazo-reaction between nitrite ion and thionine in dilute suifuric acid medium.

文章研究了在稀硫酸介质中亚硝酸根与硫堇发生的重氮化反应，基于硫堇的荧光强度随亚硝酸根的加入量增加而明显降低的现象，建立了荧光猝灭法测定痕量亚硝酸根的新方法。

The in vitro anticoagulation activity of the sample was evaluated by activated partial thromboplastin time, prothrombin time and thrombin time.

采用部分凝血活酶时间、凝血酶原时间和凝血酶时间对其体外抗凝血活性作了初步的评价，发现制备的大孔氮化碳对血液不会造成促凝，说明其可能成为一种新的血液相容性材料。

The state of soluble univalent ions of Na(superscript +) and K(superscript +) is very stable and almost unaffected by thermal oxidation treatment.

一价可溶性离子Na和K非常稳定，热氧化处理基本上不改变其在氮化硅颗粒表面的存在状态。

Business Scope: Series Silicon Nitride bonded SiC refractory products and supporting the non-stereotyped and unshaped refractory products, production and marketing.

公司经营范围：氮化硅结合碳化硅系列耐火制品及其配套的不定型与定型耐火材料产品的生产与销售。

Our plant develops usualness inter-access technology communication with more than ten international famous electric furnace manufacturing companys,and repeated visits to the foreign advanced electric furnace factories and institutes every year, learning and absorbing foreign advanced industrial furnace manufacturing technology and production processes, technology, special components of electric furnace improving technology, product upgrading technology, it makes our plant keep synchronization with the international advanced industrial furnace manufacturing technology no whether in the type,the updating of furnace, fundation material progress, components manufacturing technology progess , manufacturing automation, and the way the loading of the loading basket manufacturing technology, WDS lining energy saving techniques, ceramic fiber wave of high pressure tied ceiling stack technology, oxidation-free protection atmosphere, carburizing, nitriding, molten, salt bath, nitrate Austempered, precision heat treatment process, equational flow and temperature heat transfer asymmetric quenching tank manufacturing technology, microcomputer program heat treatment technology curve temperature control process , and so on can keep pace with internationa advanced industrial electric furance manfacturing technology.

我厂与国际十多家著名电炉制造公司开展经常性互访技术交流，每年多次前往国外先进电炉制造厂和研究所，学习并吸收国外先进的工业电炉制造技术和生产过程，工艺技术，电炉专用零部件改进技术，产品更新换代技术，使我厂工业电炉产品无论在品种类型，炉种更新，基础材料进步，零部件制造技术进步，制造工艺自动化，装料方式和装料筐制造技术方式，WDS炉衬节能技术，陶瓷纤维波浪叠法高压捆扎吊顶技术，无氧化保护气氛，渗碳，氮化，盐浴，硝盐等温淬火，精密热处理工艺，均流均温换热不对称淬火油槽制造技术，微电脑程序热处理工艺曲线控温等各个方面，能够与国际上先进工业电炉制造技术保持同步。

WENDT is an international group of companies with 12 production facilities world-wide.

德国万特WENDT集团公司是一家世界著名的磨床及金刚石和立方氮化硼砂轮制造商，公司创立于1920年，全球现有12个生产厂家，产品广泛应用于汽车及其零配件、刀具等行业，对难加工材料进行精密磨削。

Methoxystilbene and 2-methoxy-4'-nitrostilbene were synthesized from benzyl chloride and nitrobenzyl chloride by the Wittig reaction, and used as intermediates for the synthesis of the final product fluorescent whitener FP4,4'-bis(2-methoxystyrylbiphenyl via reduction and diazotisation of the latter followed by reaction with the former in the presence of NaOH.

以氯化苄和对硝基氯苄为原料，经Wittig反应合成中间体：2-甲氧基-二苯乙烯和2-甲氧基-4'-硝基-二苯乙烯。后者经还原反应、重氮化反应后，在氢氧化钠存在下与前者反应生成最终产品荧光增白剂FP4，4'-双-2-(甲氧基苯乙烯基联苯。为该类荧光增白剂的合成开辟了一条新路线

AlN is an important Ⅲ－Ⅴ compound semiconductor material with wide band-gap, which has wurtzite structure too.

氮化铝是一类重要的宽带隙Ⅲ－Ⅴ族化合物半导体材料，其晶体结构为纤锌矿型，同ZnO的晶体结构相同。

The different content TiN added 3 mol% yttria stabilized zirconia were researc- hed in this study.

本实验以不同比例氮化钛(10、20、30 wt%)添加於钇安定氧化锆3mol。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。