二氧化氮

A novel synthetic approach of 3,3'-azobis(6-amino-1,2,4,5-tetrazine) was firstly devised. Taking 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine as a primary material, DAAT was synthesized by high pressure ammonolysis and potassium permanganate oxidation. Compared with the four-step reaction in the literature, this new approach was reduced to two steps with a yield of 58.1%. The intermediate and DAAT were characterized by elemental analysis, IR and NMR spectra.

自行设计了3，3'-偶氮双(6-氨基-1，2，4，5-四嗪)新合成路线、采用3，5-双(3，5-二甲基吡唑-1-基)-1，2，4，5-四嗪为原料，由文献报道的4步反应缩减为2步，经高压氨解、高锰酸钾氧化合成了DAAT，总收率大幅提高，达到58.1%，并采用元素分析、红外光谱、核磁共振光谱等进行了结构表征。

Objectve To establish the blast-chemical combined injury model by the explosion of nitrogen tetroxide and UDMH, and investigate the pathologic and blood gas changes of this model.

目的 复制四氧化二氮（ N 2 O 4 ）和偏二甲基肼染毒与冲击波致冲毒复合伤大鼠模型，并研究其对 Wistar 大鼠血气及病理形态学的变化。

Yearly produces 10,000 tons dimethyl sulfide to install, makes the catalyst using the liquid nitrogen tetroxide (N2O4)to obtain successfully for the first time.

湖北兴发化工集团股份有限公司年产10000吨二甲基亚砜装置，首次应用液体四氧化二氮（N2O4）作催化剂获得成功。

Nitrogen tetroxide, UDMH , Blast-intoxic combined injury, changes of the blood gas, Pathomorphology

四氧化二氮；偏二甲基肼；冲击；冲毒复合伤；血气变化；病理形态学

The results indicate seawater concentration has no effect on absorbency, pH, relative density, dry matter and water contents in Aloe vera leaves. While, seawater stress causes increased MDA and membrane penetration, decreased phytochroms, prolines and NO_3~--N. It is beneficial to plant growth when irrigation was done with 10% seawater, because of higher ratio of K~+/Na~+ and lower ratio of Na~+/Ca~(2+). In addition, the polysaccharide contents in Aloe vera leaves increase twice and triplication under 25% and 50% seawater irrigation respectively, the barbaloin contents increase over triplication in var. 75% seawater and over twice in var. 50% seawater and var. 100% seawater. However, when seawater concentration exceeds 25% the growth of plant was inhibited, biomass decreased, flowering time was deferred, Ca~(2+) content decreased caused by Na~+ accumulation in leaves.

结果表明：在海水胁迫下，库拉索芦荟全叶汁的吸光度、酸度、相对密度、总固形物和水分含量总体上受海水浓度的影响不大；但芦荟叶的丙二醛含量和质膜透性增加，叶绿体色素、脯氨酸和硝态氮含量减少；在10％海水浇灌下，芦荟叶细胞具有较高的K~+／Na~+比和较低的Na~+／Ca~(2+)比，对库拉索芦荟的生长有一定的促进作用；在25％海水和50％海水浇灌下，芦荟多糖含量提高了2-3倍；在75％海水浇灌下芦荟甙含量增加了3倍多，在50％海水和100％海水灌溉下，其含量也增加了2倍多；当海水浇灌浓度超过25％后，库拉索芦荟的生长明显受到抑制，生物量降低，抽苔期推迟，同时，海水浓度的增加也导致芦荟叶中累积大量Na~+，从而使得芦荟叶中Ca~(2+)含量降低，但Mg~(2+)并没有受到海水浓度的影响；用浓度低于75％的海水浇灌库拉索芦荟可以降低剖面深度在0-100cm之间的土壤盐度；其抗氧化保护酶中超氧化歧化酶的酶活力相对保持稳定，过氧化物酶的酶活力在10％海水浇灌下明显提高，随后则下降，而过氧化氢酶的酶活力则随海水浓度的升高而下降。

The experimental results show that using the feed technique of "starved state" can raise the conversion ratio of monomers, shorten the reactive time and get polymers with much more even distribution of molecular weight; the technique of adding azobisisobutyronitrile as an initiator first and then benzoperoxide as another initiator at later Stage of experiment can get higher initiating efficiency than using one initiator only.

结果表明：采用&饥饿态&聚合工艺可提高单体转化率，缩短反应时间，且所得到聚合物相对分子质量分布均匀；选用偶氮二异丁腈和过氧化笨甲酰两种引发剂进行复配，比选用单一引发剂的引发效果好；选用酯酸丁酯、正丁醇和丙二醇甲醚丙酸酯作混合溶剂，当配比为2：1：1时聚合体系稳定，聚合物的固体质量分数可达70%，且粘度适中。

N,N '- ditertbutyl nitroxyl radical, 2, 2,6,6- tetramethyl-4 - hydroxyl piperdinehy droxylamine and its nitroxyl radical, as inhibitors of the BPO- initiated copolymerization of styrene (M 1 ) with acrylonitrile (M2 ), at 60℃,has been studied.

研究了二叔丁基羟胺，二叔丁基氮氧自由基，2，2，6，6－四甲基－4－羟基哌啶羟胺和2，2，6，6－四甲基－4－羟基哌啶－1－氧自由基对过氧化苯甲酰60℃引发的苯乙烯（M1）－丙烯腈（M2）共聚合的阻聚行为。

The Syntheses of a High Temperature Gellant in Acid Stimulation Using Invert Emulsion Polymerization;2. Aiming at the special oxidizability of NTO,three different gellant s were chosen which could form gel with NTO,and their rheologic properties were studied.

针对四氧化二氮的特殊氧化性，筛选了三种不同胶凝剂与NTO形成凝胶，对其流变性能进行研究，并结合发动机试验、限流圈试验、发动机头部液流试验，验证了其与偏二甲肼凝胶组成的双组元推进剂用于凝胶发动机试验的可行性。

In chapter 4 and 5, we have applied the high density ITO nanorods on GaN/InGaN sapphire-based LEDs and Vertical-Injection LEDs, respectively.

而在论文的第四章第五章，我们将高密度分布的氧化铟锡奈米柱薄膜应用在氮化镓蓝宝石基板型发光二极体和垂直注入型发光二极体上。

Methods Male SD rats were given drinking water containing manganese chloride (MnCl24H2O 0.5g/L and 5.0g/L respectively) for 60 days. At the end of experiment, all the rats of the manganese-exposed groups and control group were decapitated after anaesthesia with 2% sodium phenobarbitone intraperitoneally, the brains were removed and activities of alanine aminotransferase, aspartate aminotransferase, alkaline phosphate, cholinestarase, monoamine oxidase, superoxide dismutase, nitric oxide synthase, and levels of glutathione, maleic dialdehyde, and proteins were biochemically analyzed.

大鼠经饮水连续染锰（MnCl24H2O 0.5g/L和5.0g/L）60d后，应用荧光光度比色法测定新鲜脑组织匀浆的谷丙转氨酶、谷草转氨酶、碱性磷酸酶、胆碱酯酶、单胺氧化酶、氧化亚氮合酶、超氧化物歧化酶活性和谷胱甘肽、丙二醛、蛋白质含量，并设生理盐水对照组。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷