查询词典 urea-formaldehyde

Mono-calcium phosphate, sulfuric acid and urea were used for simulating the crystallization of calcium sulfate in the reaction of phosphate rock and urea-sulfuric acid.

结果表明，与无尿素的结晶过程相比，尿素使出现结晶的时间延长了150%，但悬浮液密度增加50%，结晶在长度和宽度上均有所增加，特别是宽度上的增长超过50%。

Using two methods combined(urea and phosphation modification, urea and pH modification) to modify SPI, when urea concentration was 3mol/L, at pH 10, it had the largest adhesive strength, and good water resistance ability.

采用尿素变性和磷酸化、尿素和pH变性两种方法复合修饰SPI，与单一的化学修饰方法相比，尿素浓度为3mol/L、pH为10时，所得到的胶粘强度最大，耐水性也很好。

For the cases of CHD,the level of plasma endothelin-1 in these of HPIgG seropositivity is higher than that of HP seronegativity(P.05).(4) No correlation between chronic HP infection and essential hypertension,diabetes mellitus,tobacco use,age,gender,vocation,living condition ,alcohol consumption and family history was found.(5) For the cases of positive for Carbon-14 urea breath test in CHD patients, the level of plasma GLU is higher than that of negativity for Carbon-14 urea breath test (P.05).The rate of positive for Carbon-14 urea breath test in CHD patients with diabetes mellitus is significantly higher than that of CHD patients without diabetes mellitus.

结果(1)冠心病组血清HPIgG阳性率明显高于非冠心病组(45.54％vs 28.30％，P＜0.05)；(2)冠心病组C-14呼气试验阳性率明显高于非冠心病组(54.46％vs 30.19％，P＜0.01)；(3)冠心病组慢性HP感染者血浆ET-1水平明显高于非HP感染者(P＜0.05)；(4)慢性HP感染与血脂、高血压史、糖尿病史、吸烟史、年龄、性别、职业、生活环境、饮酒史以及冠心病家族史无关；(5)现症HP感染与糖尿病及空腹血糖升高有关(P＜0.05)；与血脂、高血压史、吸烟史、年龄、性别、职业、生活环境、饮酒史以及冠心病家族史无关。

Synthesis and Characterization of MWNT-containing Polyurethane-urea Based on the typical two-step polyurethane-urea synthesis, self-crosslinkable polyurethane-urea compounded of PTMO Poly (tetramethylene oxide, MDI (4,4'-diphenylmethane diisocyanate) and extended by AEAPS (aminoethyl aminopropyl trimethoxysilane) were prepared.

含有纳米碳管的聚氨酷的合成、表征及性质研究首先通过典型的两步法合成了软段为pTMOPoly(tetramethyrene oxide，叠年东师范大李博士后么站银告硬段为MD！(4，4'一diPhenylmethane diisocyanate)，扩链剂为AEAPS (aminoethylaminoProPyltrimethoxysilane)的聚氨醋。

There was correlation between blood urea nitrogen and milk urea nitrogen,so the changing of milk urea nitrogen could reflect the accommodate condition of rumen degraded protein,rumen undegraded protein and energy.

由于乳尿素氮含量和血浆尿素氮含量之间具有一定的相关性，众多研究表明，通过乳尿素氮含量的变化可以反应出瘤胃降解蛋白、过瘤胃蛋白及能量的供应情况。

This article discusses the influence of urea prilling tower exit temperature on the water percentage of urea,analyses the factors influencing urea prilling tower exit temperature,and puts forowrd suggestions to control the tower exit temperature through replacing the prilling sprayer and adjusting the shutter opening of prilling tower according to atmosphere temperature and humidity.

讨论尿素造粒出塔温度对尿素含水率的影响，对影响尿素造粒出塔温度的因素进行分析，提出通过更换喷头及根据环境温度和空气相对湿度调节百叶窗开度来控制尿素造粒出塔温

By the study of the influence of urea concentration,reaction time and temperature on the dyeing results and washing fastness,the improved conditions were found as(1) for weak acid red: 90 ℃ dyeing for 60 min with urea 225 g/L;(2) for strong acid yellow: dyeing 50 min at 80 ℃ with urea 250 g/L and NaHSO3 8 g/L.

以尿素为基础对羊毛低温染色工艺进行了初步探讨，研究了尿素浓度、反应温度和反应时间对羊毛染色效果及耐洗牢度的影响，找出了较佳的低温染色条件：①弱酸性红，尿素225 g/L，90℃，60 min；②强酸性黄，NaHSO3 8 g/L，尿素250 g/L，80℃，50 min。

As hollow fiber membranes thickness are different, yet urea clearance rate in simulation solution is relatively high, which can reach more than 64% and little difference among them; the BSA have a relatively high rejection, which can be achieved over 98%. There is a certain difference in the Lysozyme clearance rate, the smaller thickness, the higher the rate of removal, and the removal rate of 10μm thickness of the membrane is 29%. The clearance rates of urea were very high using different fiber diameter dialyzers, at around 80%. Urea clearance ratecan reach to the highest 88.6% using 0.26mm fiber diameter dialyzer. The clearance rates of Lysozyme vary greatly, the smaller the diameter, the higher clearance rate, and the highest removal rate of lysozyme is 62.79% using 0.26mm fiber diameter dialyzer. However, there is little impact on the rejection of BSA, which can reach 98%.

不同壁厚中空纤维膜透析器对模拟液中尿素的清除率均可达到64％以上，且差异不大，对牛血清白蛋白的截留率均可达到98％以上，对溶菌酶的清除率有一定的差异，壁厚越小清除率越高，壁厚为10μm的膜对溶菌酶的清除率为29％；不同纤维内径透析器对尿素的清除率均在80％左右，纤维内径为0.26mm的透析器对尿素的清除率最高，达到88.6％，对溶菌酶的清除率差别很大，内径越小，清除率越高，内径为0.26mm的透析器对溶菌酶的清除率达到62.8％，对牛血清白蛋白的截留影响很小，截留率都能达到98％以上。

In this paper, use the method of the orthogonal experiment study urea and potassium hydrate pulping of bagasse technical parameters,and then through two single factor optimize experiments,at last get the optimal technical parameters for the urea and potassium hydrate pulping of bagasse: urea charge 13%, potassium hydrate charge 5%, sulphidity 6%,liquor ratio 1 : 4,maximum temperature is 150℃,time at maximum temperature is 45min.

本论文用正交实验方法研究了碳酰胺和氢氧化钾蒸煮蔗渣的工艺条件，然后通过两次单因素优化实验，最终得到了碳酰胺和氢氧化钾蒸煮蔗渣的最佳工艺条件：尿素用量13％，氢氧化钾用量5％，硫化钾用量为6％，液比1：4，最高温度150℃，保温时间45min。

We found, on the one hand, urea can cause cytochrome cboth on the electrode surface and in the solution to be denatured and then the denaturedprotein lends to move the formal potential of the native protein in the bulk solution to amore negative value; and on the other hand, urea can also cause the formal potential ofnative protein in the bulk solution to shift positively with decreasing the degrees ofdissociation of electrolytes and polarity of the urea-water solvent.

我们发现脲能引起电极表面和溶液中的细胞色素C的变性，变性蛋白质能导致本体溶液中天然蛋白质的标准式电位的负移；另一方面，通过降低电解质的离解度和脲-水溶剂的极性，脲能使本体溶液中天然蛋白质的标准式电位正移。

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。