查询词典 reagent

A new reagent p-chloroantipyrylazo was studied as analytical reagent for spectrophotometric determination of Ca2+ in the cytolymph of industrial microorganis.

研究了新试剂与Ca2+的显色反应，建立了测定工业微生物胞液中微量Ca2+的新方法。

The sodium bentonite was modified by organic reagent hexadecyl trimenthyl ammonium bromide and cationic polyacrylamide. The structures of modified organo-bentonite and the effect of concentration of the intercalating reagent and reacting time on decoloring capacity were studied.

用阳离子有机改性剂十六烷基三甲基溴化铵和阳离子聚丙烯酰胺复合插层改性钠基膨润土，分析了改性膨润土的结构，研究了改性剂质量浓度及二次改性时间对复合插层膨润土脱色效果的影响。

This method conformed the following conditions: spleen phosphodiesterase and micrococcal nulcease for digesting reagent and the concentration, temperature and digesting time of the two enzymes;the components of p32-post label alleviant and labeling time;the concentration of p1 nuclease; the concentration of T4 polynucleotide kinase for catalysing and labeling reagent;the components of bidirectional spreader and the spreading time ,etc.

确定了采用脾磷酸二酯酶和微球菌核酸酶消化底物以及两种酶的使用浓度、温度及消化时间；确定了P32标记缓冲液的主要成分及标记时间；确定了P1核酸酶的浓度；确定了T4多核苷酸激酶催化标记底物的浓度；确定了双向展开剂的主要成分及展开时间等。

The difference of male and female Pistacia Vera were compared and analyzed through treating with chemical reagent, surveying the morphology, RAPD techniques, analyzing the chromosome and comparing the band pattern of isoenzyme. The following results and conclusions were drawn:The leaves of male and female Pistacia Vera were treated respectively with chemical reagent. The sexes were identified quickly and efficiently through different color and precipitate reaction among them. The difference is significant.

本文采用化学药剂处理、形态学观察、RAPD技术、染色体压片分析及同工酶谱带分析等方法分别进行了阿月浑子的雌、雄株差异性比较分析，得出如下结论：(1)采用化学药剂分别处理阿月浑子雌雄株叶部提取液，通过不同的颜色反应和沉淀反应可以快速而有效地鉴别雌雄株，并且差异显著。

The maximal reaction rate of pyrotechnical reagent with potassium perchlorate added with Fe2O3 by crystallization method is 8.10 min-1, which is 4.09 times of that without catalyst. The time to maximal rate is 8.52 min, which is lower than that without catalyst by 92.8%. It was also found that CuO can catalyze pyrotechnical reagent with potassium nitrate, and the addition is better with mixing method.

结果表明，氧化铁对含高氯酸钾的烟火药剂具有催化作用，以结晶添加法催化效果最佳；此药剂的最大反应速率为8.10 min-1，是不含催化剂药剂的4.09倍；到达最大反应速率时间为8.52 min，比不含催化剂的药剂降低了92.8%。

The microspheres were conjugated with FITC antibody, and the reagent kit HCG SEROZYME was used to test the capacity of conjugation. The results indicated that the conjugation capacity of the microspheres was similar with that of the Italy microspheres, which were merchandises for the reagent kit HCG SEROZYME specially.

另外，还将微球与荧光标记的FI-TC蛋白进行偶联，用试剂盒HCG SEROZYME检测了偶联的情况，并将结果和与试剂盒配套的意大利磁珠所得到的结果进行了比较，发现两者偶联效果基本接近。

To further testify the high efficiency of these new reagents in the synthesis of sterically hindered peptides, we successfully synthesized the extensively -N-methylated peptide moiety of the antineoplastic and lipophilic depsipeptide Dolastatin 15 using reagent BEP and FEP. We also synthesized the highly hindered tetrapeptide segment of Cyclosporin A using reagent BEMT and BEP, respectively.

为进一步检验这类吡啶正离子型缩合剂在有空间位阻的多肽合成中的性能，我们以BEP和FEP为缩合剂，成功地合成了具有抗肿瘤活性的亲脂性酯肽Dolastatin 15分子中高N-烷基化的肽链部分；分别以BEMT和BEP为缩合剂合成了生物活性肽Cyclosporin A中空间位阻最大的四肽片断。

The phosphorus oxychloride or phosphorus tribromide N, N-dimethylformamide mix and react to form the Vilsmeier reagent used in the reaction. The newly prepared Vilsmeier reagent is added into the reaction bottle provided with the return condenser and the blender; a reaction raw material N, N-dimethylformamide solution expressed in the reaction formula is added into the system; the temperature is risen; the corresponding multi substituting pyridine-2 (1 H)-ketone compound can be made after the column chromatography of the silica gel; the production rate is between 60 and 95 percent according to different reactions.

由三氯氧磷或三溴化磷N，N-二甲基甲酰胺混合获得反应中所用Vilsmeier试剂；将新配制的Vilsmeier试剂加入装有回流冷凝管、搅拌器的反应瓶中，向体系中加入反应通式中表示的一种反应原料的N，N-二甲基甲酰胺溶液，升温，经硅胶柱层析分离得相应的多取代吡啶-2(1H)-酮类化合物，产率视不同反应在60~95％之间。

Methods 0mit and alter some work procedure including distillation,store reagent that show color,either the order of reagent procedure or recycle of the waste trichloromethane.

方法有条件的简化蒸馏步骤、显色剂储存使用、改变显色剂与氯仿的加入顺序、氯仿废液回收循环使用。

charcoal gold ore containing arsenic ; copper ; help-soak reagent ; activator reagent ; cyaniding

为了减少氨对环境的污染，改用硫酸铵与矿物中铜反应形成Cu(NH3)42

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。