The urea hydrolysis characteristics in 3 different soils under a wide range of urea concentration different incubation time and different temperature were studied to clarify the hydrolysis behavior of urea applied in band or spot to upland soil .

采用较宽幅度 尿素 浓度、不同温度和不同培养时间对潮土、灰钙土和黄棕壤中尿素水解过程进行了研究。

The amounts of removed urea calculated through the blood urea concentration pre and post dialysis were the same as that of through the urea concentration of collected dialysate .

通过透析前后血及透析废液 尿素 浓度计算出的尿素清除量结果一致。

Results : Time - averaged urea concentration protein decomposition rate ( PCR ) and C - S indexes ( KT / V ) in the treatment group were significantly superior to those in the control group ( P < 0 . 05 ) .

结果：治疗组28例中所测得的平均时间 尿素 氮 浓度（TACurea）、蛋白质分解率（PCR）及G&S指数（KT/V值）均明显优于对照组（P<0.05）。

The results showed that the rate of urea hydrolysis in soil at low urea level was enhanced by increased urea concentration and temperature but decreased by prolonged incubation time .

结果表明，尿素水解速率深受土壤类型、 尿素 浓度、温度和培养时间的影响。

The serum urea nitrogen concentration of group B and C decreased by 3.44 % 9.73 % respectively cholesterin concentration decreased by 11.08 % 44.78 % ( p < 0.01 ) respectively ;

B、C组血清 尿素氮 含量分别降低了3.44%、9.73%，胆固醇含量分别降低了11.08%、44.78%（p＜0.01）；

And the two kinds microencapsulated HL-7702 cells both had the continued ability of synthesis of albumin and urea the concentration level had no significant difference .

两种微囊化HL一7702细胞同样具备持续合成白蛋白和 尿素的能力，其 浓度水平无统计学差异。

Methods : 50 mice were randomly divided into amino acid groups ( low medium and high doses ) mixed feed group and control group . The exercise tolerance serum urea nitrogen concentration and blood sugar level were measured .

方法：50只小鼠随机分成氨基酸低、中、高剂量组、混合饲料组和对照组，进行运动耐力测定，血清 尿素氮 浓度 测定和血糖测定。

Substituting 56.7 % soy-bean meal with slow - releasing urea protein concentration the milk - producing performance will not reduce .

用缓释 尿素蛋白 糖料代替部分豆饼，奶牛生产性能不会降低。

Reduced and denatured RNase A by using high performance hydrophobic interaction chromatography ( HPHIC ) was studied . The effects of urea concentration flow rate of mobile phase and protein concentration were also investigated .

用高效疏水色谱（HPHIC）研究了还原变性核糖核酸酶（RNaseA）在HIC上流动相中 脲 浓度、流动相流速及蛋白浓度对还原变性RNaseA复性的影响。

The serum ionized calcium citrate bicarbonate sodium serum creatinine and urea concentration .

监测血清游离钙、枸橼酸、血钠、 碳酸氢根 浓度；

It was found that when the urea concentration of wastewater was higher than 26.3 % urea would crystallize with ice before the freeze concentration limitation .

研究结果表明：尿素废水在达到浓缩极限之前，当 尿素 浓度高于26·3%时，继冰晶析出之后会共晶析出尿素；

The intensity of output signals shows linear relationship with the logarithmic urea concentration from 0.1 to 6 mM . the sensitivity of determination for urea concentration is 22 mV / PUrea .

当 尿素 浓度 范围在0.1－6mM之间，响应值与尿素浓度的对数呈线性关系，该传感器对尿素的检测灵敏度为22mV／PU阳。

Urease in soybean is determined quantitatively by ammonia gas sensing electrode based on the ammonia produced from the urease hydrolysis reaction of urea . The effects of temperature pH and urea concentration on characteristic of urease in soybean is studied .

以氨气敏电极测定单位时间内脲酶分解尿素所生成的氨数量定量表示大豆 脲酶活性高低，并对大豆脲酸的最适反应条件及氨气敏电极的测试条件进行了研究。

Higher liquid spraying rate and higher urea solution concentration lower nozzle position are preferred conditions for the growth of particles .

增大料液流量、 料液 浓度，减低喷嘴高度均有利于颗粒长大；

Assuming that two hydrogen bonds are formed between a urea molecule and two neighboring peptides of the polypeptide chain the relationships between physical parameter and urea concentration are obtained by means of adsorption kinetic method .

从尿素分子与蛋白质肽链上的相邻二肽形成双氢键的假设出发，利用吸附反应动力学方法，得到了描述蛋白质变性特征的物理量与 尿素 浓度关系的表示式。

The experimental results show that the relationship between urea concentration and time is linear and the reaction order is zero .

实验结果表明， 吸收过程中 尿素 溶液 浓度 随时间的 变化呈线性关系，即为零级反应方程；

The serum Urea N concentration increased because of the Associative Effect when adding 150 ~ 300g alfalfa .

在添加150～300g苜蓿时血清 尿素氮（ UreaN） 浓度由于产生的正组合效应而提高；

The experimental conditions including temperature pH denatured protein concentration and urea concentration in the renaturation process of recombinant human interferon - γ inclusion body by dilution were studied and at the same time pulse renaturation was tested . The optimum renaturation conditions were obtained .

采用稀释法研究了重组人γ干扰素包涵体复性条件，如温度、pH值、蛋白浓度、复性液中 脲 浓度，同时对加样操作方式进行了考察，得到了较为适宜的复性条件。

The urea concentration to wash and purify protein was confirmed .

确定了洗涤和溶解包涵体的最佳 尿素 浓度；

The dynamic changes of the lysozyme 's Kd was induced by online increasing urea concentration using gradient elution system of the liquid chromatographic system the urea concentration made the conformational transition of lysozyme was determined by the Kd calculation .

通过液相色谱梯度洗脱系统在线增加 尿素 浓度，测定Kd值的动态变化，计算出使溶菌酶发生变性的尿素溶液浓度。

Its function has been studied with ISFET meter and the intensity of output signals shows linear relationship with the logarithmic urea concentration from 0 to 20 mM .

采用离子敏感场效应管特性测定仪对它的性能进行了分析。当 尿素 浓度在0-20mM范围内，尿素 浓度的对数与响应值之间呈线性关系。

The Change of Urea Nitrogen Concentration in the Blood of Wushu Sportsmen

武术运动员血液 尿素氮 浓度的变化

Temperature of 140 pressure of 3.4kPa ( abs )( 25.5mmHg ) urea concentration of 99.7 % ( wt ) in second step of evaporation .

二段蒸发工艺参数，温度140℃、压力3.4kPa（绝）（25.5mmHg）， 尿素 浓度为99.7%（质量%）。

Effect of urea concentration incubation time and temperature on urea hydrolysis in 3 different soils

尿素 浓度、培养时间和温度对3种土壤尿素水解过程的影响

The germination rate the index of sprouts and the seed vigor index were 26.67 % 7.49 and 259.83 when dealed with urea which concentration was 0.125 % . The result dealed with urea was better than the control .

用0.125%的 尿素处理的蓝花楹种子发芽率、发芽指数和活力指数最高，分别达到26.67%、7.49和 259.83。

Compared with the third day at the thirteenth day of feeding sheep borax Ammonia concentration increased by 17.3 % and urea concentration decreased by 20.3 % in rumen and ammonia concentration and urea concentration decreased 24.4 % and 15.5 % in blood .

给绵羊饲喂硼砂第13天与第3天相比，瘤胃氨浓度增高了17.3%，瘤胃 尿素 浓度降低20.3%，血浆氮浓度降低24.4%，血浆尿素降低15.5%。

So water-retaining agents could mix urea and low concentration potassium in process of production and we can study complex water-retaining agents which compose the nitrogen and potassium too .

因此，在生产过程中可以考虑保水剂与 尿素和低 浓度的钾肥混合施用，也可以进行赋氮肥、钾肥的复合型保水剂研究。

The average plasma urea concentration has decreased and its variation was more smooth after feeding the ration containing Starea than urea .

与尿素日粮相比，动物采食含糊化淀粉尿素日粮后外周血液 尿素 浓度有所下降，且动态变化也相对平稳。