查询词典 urea-formaldehyde

Using urea as reducing agent, the active agents which loaded on carrier before and after modification deoxidize NO.

并考察以尿素为还原剂，改性前后的载体负载活性组分为催化剂催化还原NO的活性，结果表明，提高比表面积，空速在24000h。

RESULTS: After ischemia-reperfusion injury, the rats had hydrouria, urine osmotic pressure depress, symptoms of carnine and urea nitrogen increasing. HE staining demonstrated that renal tubular epithelial cells were swelling, necrosis, and desquamate. Aquaporin-1 expression and its mRNA level was decreased; in particular, the expression and level were the lowest at day 1 after ischemia-reperfusion injury and recovered to normal value at day 5 after ischemia-reperfusion injury.

结果：大鼠肾脏缺血再灌注损伤后出现尿量增多、尿渗透压降低，血肌苷、尿素氮升高症状；苏木精-伊红染色示肾小管上皮细胞肿胀、坏死、脱落；水通道蛋白表达量及其mRNA含量均较对照组减少，这些变化于缺血再灌注损伤 1 d时最低，至缺血再灌注损伤 5 d时恢复正常。

The adsorption of urea nitrogen onto dialdehyde cellulose under catalysis of immobilized urease in gelatin was studied in batch system.

研究了在固定化脲酶催化作用下双醛纤维素对尿素氮的吸附平衡和动力学。

We are trading in Cement, Crude Oil, Diesel, Sugar, Urea and a sophisticated Airport Security System for the past 20 years.

我们的贸易在水泥，原油，柴油，糖，尿素和先进的机场安全系统在过去的20年。

But apparent digestibility of the urea nitrogen is not much different, because it is easier to be decomposed.

消化道中以蛋白质形态存在的~(15)N标记氮比例以盲肠内容物最高，在正常食粪兔高达78.5％，这主要是盲肠微生物代谢的结果。

Under the conditions that the molar ratio of dimethyl carbonate to N,N′-diphenyl urea was 10∶1,the amount of catalyst Bu2SnO was 2%,reaction temperature was 160℃,and reaction time was 2 h,the yiel...

在反应物碳酸二甲酯和二苯基脲的摩尔比为10∶1，催化剂Bu2SnO的用量为2%，160℃时，反应2h，MPC的收率达到98%，远高于文献结果(77%)。

The uptake and utilization of 15 N-urea in a dual-purpose rice strain 202 with grain-straw were studied.

应用~(15)N-尿素研究了谷秆两用水稻202对肥料氮素的吸收利用。

Reagents and so on temperature, organic solvent, potential of hydrogen, urea, amide may cause the DNA member to denaturate, even if hydrogen bond break between the DNA duplet bond's, the double helix structure unties.

温度、有机溶剂、酸碱度、尿素、酰胺等试剂都可以引起DNA分子变性，即使得DNA双键间的氢键断裂，双螺旋结构解开。

MethodsThe rat chronic renal failure model induced by feeding adenine was used to investigate rat blood urea nitrogen, creatinine, amount of emiction within 24 h, urinary protein and pathological reaction of nephridial tissue by means of comparing the blank control, negative control, positive control with the Cordyceps minlitaris stroma of CRF rats.

方法采用饲喂腺嘌呤诱导大鼠慢性肾衰模型，观察比较了空白组、阴性对照组、阳性对照组和蛹虫草子实体组CRF模型大鼠血尿素氮、肌酐、24 h尿量、尿蛋白

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。

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。