生硝

In this paper, a new kind of bonded organic/inorganic hybrid NLO materials containing P-Nitro aniline was synthesized through sol-gel process by using alkoxysilane dye containing P-Nitro aniline and tetraethylorthosilicate as reactants.

以含对硝基苯胺生色团的烷氧基硅烷染料和正硅酸乙酯为原料，通过溶胶-凝胶法合成了含对硝基苯胺生色团的键合型有机/无机复合非线性光学材料。

A new spectrophotometric method for the determination of chromium has been developed. In HCl medium, the chromium oxidizes hydroxylammonium chloride to form nitrite, which produces a pink azo dye when reacting with p-aminobenzene sulfonic acid and α-naphthylamine.

基于铬在稀盐酸介质中氧化盐酸羟胺产生亚硝酸根，而亚硝酸根与对氨基苯磺酸重氮化后可与α-萘胺偶联产生粉红色偶氮染料，提出了分光光度法测定铬的新方法。

In HCl medium, iodate oxidizes hydroxylammonium chloride to form nitrite, which can produce a red azo dye with the reaction of p nitroaniline and α naphthylamine.

基于碘酸根在稀盐酸介质中氧化盐酸羟胺产生亚硝酸根，而亚硝酸根和对硝基苯胺重氮化后可以与α-萘胺偶联产生红色偶氮染料，提出了分光光度法测定碘的新方法。

In the paper, the electrode system of the original TL/TSC measurement instrument is improved, which greatly facilitates sample exchange and increased liquid nitrogen's running and cooling speed. Through long time and repeated practice we finally find an effective method to prepare films. We've synthesized a new kind of organic photo-refraction material nitryl azobenzene grafting PVK and characterized it with IR spectra. We've also synthesized 5OCB and found the optimal mass ratio of PVK/5OCB/C60-49.8:50:0.2, and given the two-beam coupling testing result.

本文的主要工作是：首先对传统热发光和热激电流测量装置的电极系统进行了改进，使其在换取样品，液氮流动、冷却速度等方面都有了很大提高；摸索了较适合于热激实验的成膜方法；合成了一种新型的有机光折变材料硝基偶氮苯接枝PVK，并对其做了红外谱表征；合成了生色团物质5OCB，找到PVK/5OCB/C_(60)的最佳配比为49.8：50：0.2，并对该体系做了初步的光学测试。

Latest research indicates that,if eating a great deal of undone eggs for a long time,antibiotin protein in undone egg white can integrate with biotin internal the body as a sort of steady compound,making biotin can't be absorbed by intestinal wall and leading to energy ennui,muscle ache,hair falling off,skin inflamation,appetite letdown,weight droping and so on.When eggs pass through the intestinal tract,it's easy to zymolysis and transformation,sometimes it may appear nitroso compound,which has the function of causing cancer.

最新研究表明，若长期大量吃生鸡蛋，生鸡蛋清内的抗生物素蛋白与体内生物素结合成一种稳定的化合物，使生物素不能被肠壁吸收，则可导致精神倦怠、肌肉酸痛、毛发脱落、皮肤发炎、食欲减退、体重下降等；生鸡蛋经过肠道时，容易发酵变质，有时可能产生亚硝基化合物。

Two azobenzene-containing polyethers were synthesized and their thermotropic liquid crystalline properties were investigated.

氯乙基缩水甘油醚和GCE/羟丁基乙烯基醚分别通过阳离子聚合、光引发共聚合，获得两种聚醚，然后再分别与 4-硝基-4' -羟基偶氮苯反应，制备了两种侧链含偶氮苯生色团的液晶聚合物。

Layers from 0 to 120cm and the effects of different factors on NO3(superscript -)-N accumulation The results showed the more nitrogen fertilizers applied, the more NO3(superscript -)-N accumulated in different soil layer; nitrogen fertilizers applied with organic fertilizer or sod culture could reduce the accumulation of NO3(superscript -)-N.

结果表明，氮肥的大量施用会造成硝态氮在土壤中的累积，而配施有机肥、地表生草、合理的种植密度均可减少硝态氮的累积量。

In four experimental sites, the good growth of tobacco behaved identifiably in fertilizer-crop straw.

在旺长期，烟叶的生长势优子化肥处理，叶片硝态氮含量也略高于化肥处理。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。