氨氮

Results showed that yield of TCA-N in phosphorylated fish protein hydrolysate approached to that of the control sample and phosphatization had little effect on hydrolysis.

对低值鱼蛋白磷酸化改性，并进行体外酶解，研究了磷酸化鱼蛋白的酶解特性(酶解物氨态氮得率、TCA可溶性肽得率及肽分子量分布)。

The results showed that under the conditions of the relative soil water content below 45 percent, praline content and MDA content of spring wheat of N fertilizer treatments in flag leaves increased, soluble protein content reduced.

结果表明土壤相对含水量低于45%时，施氮处理的春小麦旗叶脯氨酸和MDA含量增加，可溶性蛋白含量降低。

L-citrulline was determined with liquid scintillometer, and the activity of NO synthase(induced NOS, total NOS, constitutive NOS) in pulmonary and right ventricular homogenates was counted.

采用比色法测定血浆、肺组织、右心室组织一氧化氮代谢产物(NO2-/NO3-)的含量，液体闪烁仪测定[3H]-瓜氨酸的生成量，计算肺组织、右心室组织组织型NOS(tissue NOS，tNOS)、诱导型NOS(induced NOS，iNOS)和原生型NOS(constitutive NOS，cNOS)的活性。

If seizures supervene, the treatments of choice are benzodiazepines, gabapentin, and vigabatrin.

急性卟啉病发作时，如果出现痫性发作；可以选用苯二氮卓类药物、加巴喷丁、氨己烯酸等药物控制发作。

Activation of glutamine synthetase gene plays a pivotal role inbacteria in response of nitrogen starvation.

谷氨酰胺合成酶是生物体氮代谢调控中的关键酶。

Extensive experimentation revealed several issues, along with several corresponding solutions:(1) given that lithium metal dissolves slowly in liquid ammonia, considerable time was required to generate the dissolved metal solution (ca. 1 h);(2) the t -BuOH must be freshly distilled prior to use 21 to diminish the formation of ketone 19 (Figure 2);(3) efficient capture of the lithium enolate ( 11 ) required the use of freshly distilled TMSCl and Et 3 N; and (4) the presence of residual thiophenol upon workup was found to inhibit the subsequent Sc 3 -promoted hydroxymethylation.

大量实验揭示若干问题，随着几个对策 1鉴于锂金属溶化慢慢液氨、需要相当多的时间创造了金属溶液溶解(约占1小时)；(2) T恤使操作必须事先用新鲜蒸馏水形成酮减少2119(图2)；有效捕获的锂烯醇(11)使用新鲜蒸馏水需氯和ET三氮；含有残余硫workup经发现抑制随后推选3-羟甲晋升。

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。

It is apparent that a high degree of ammonia volatilization and/or nitrate leaching can occur in cropping systems susceptible to previously described conditions.

很明显，高的氨挥发和硝态氮的淋失会发生在符合上述条件的任何种植制度中。

Sodium(3 S,4S)-3-amino-4--2-ox-Oazetidine-1 -sulfonate is its key intermediate, a chiral zwitterion.

手性内盐(3S，4S)-3-氨基-4-氨甲酰氧甲基-2-氧代氮杂环丁酮-1-磺酸钠是卡芦莫南的关键中间体。

The test was conducted to study the influence of the different nitrogen concentration in float system on some agronomical and physiological characters of flue-cured tobacco plant at transplanting and 30 days after transplanting respectively.

以红花大金元烤烟品种为材料，研究了育苗阶段不同氮浓度营养液即50、150、250、350、450、550mg/kg对成苗时烟苗农艺性状、根系活力、脯氨酸含量以及移栽后30d时体内多酚氧化酶、过氧化物酶、过氧化氢酶等活性的影响。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。