查询词典 nitrogen

The endermic LD50 to rat and mouse were 926 mg/Kg and 1210 mg/Kg respectively. The results of subscute toxicity test in rats showed that the content of blood urea nitrogen in exposure groups was higher than that in control group, the histopathological changes of testis observed in exposure groups were obvious. Mutagenic tests including bacillus subtilis DNA rec-assay, micronucleus ...

其大、小鼠经皮LD_(50)分别为926mg/kg和1210mg/kg；大鼠90天经皮染毒，试验组BUN含量高于对照组，光镜下，试验组睾丸的组织学结构有明显改变；枯草杆菌DNA重组试验、小鼠骨髓多染红细胞微核试验和小鼠睾丸染色体畸变分析试验均获得阳性结果。

BACKGROUND: Oxygen-derived free radicals are produced during non-enzymatic glycosylation of diabetic protein and accompanied with decrease in nitrogen monoxide synthesis so as to cause the calcium increase in cell,evacuation of pykno-granule and apoptosis induced by activating endoenzyme.

背景：糖尿病蛋白质非酶糖化过程中可产生大量的氧自由基，同时伴有一氧化氮合成下降，致使细胞内钙增加，胞内致密颗粒排空、激活胞内酶而启动细胞凋亡的发生。

Nitrogen, phosphorus and potassium absorption in ensilage maiz.

青贮玉米对氮磷钾的吸收规律，作物学报， 2006，

Grain-forage maize and ensilage maize cultivars were used in this article,and the silage production characteristics of those two cultivars in different nitrogen treatments were studied systematically.

文章以粮饲兼用和青贮专用玉米品种为材料，对不同氮肥运筹下玉米饲用栽培的物质生产特性进行了系统研究。

Objective To investigate Ephedra genomic DNA transformation into yeasts by nitrogen ion implantation with the sole object of ephedrine products.

目的以麻黄碱为目标产物，探讨氮离子注入介导麻黄基因组DNA在酵母菌中的转化。

With the system pressure dropped,the nitrogen adsorption equilibrium constant of the activated carbon increased.

随反应体系压力的下降，所得活性炭对氮气的吸附平衡常数增大。

The treatment of cervical erosion:(1) electric iron therapy: the use of high-frequency current erosive burning face, good curative effect, simple operation, low recurrence rate (2) liquid nitrogen cryotherapy: pain, less bleeding, a high rate of fetal more (3) laser treatment: the use of laser erosion organizations so that charring eschar.

宫颈糜烂的治疗：(1)电熨治疗：利用高频电流烧灼糜烂面，疗效好，操作简单，复发率低(2)液氮冷冻疗法：无痛，出血少，一次胎愈率高(3)激光治疗：采用激光使糜烂组织炭化结痂。

Second cervical erosion treatment: 1, electric iron therapy: the use of high-frequency current erosive burning face, good curative effect, simple operation, low recurrence rate. 2, liquid nitrogen cryotherapy: Making frozen lesions, necrosis, loss, no pain, less bleeding, a high cure rate, 3, laser treatment: so rotten to the core organization carbonized eschar.

二度宫颈糜烂的治疗：1、电熨治疗：利用高频电流烧灼糜烂面，疗效好，操作简单，复发率低。2、液氮冷冻疗法：使病变组织冷冻、坏死、脱落、无痛苦、出血少、一次治愈率高，3、激光治疗：使糜烂组织炭化结痂。

The structures were then overlaid using the nitrogen, the neighboring hydrogen, and the oxygen of the ethanolamine functionality.

结构随后用乙醇胺功能度的氮，临近的氢和氧覆盖。

Triethylamine and ethyl ether were freshly distilled in nitrogen over potassium before use.

对于 三乙胺和乙醚的蒸馏提纯，是在氮气的保护下进行操作的，烧瓶中，加入乙醚，用氮气保护，置换体系中的空气，然后加入K，回流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。