三苯基的

In this paper we combined three chromatographic separation and purification technique such as affinity chromatography, ion exchanger chromatography and hydrophobic interaction chromatography to develope a new technology of stimutaneous extraction of three enzyme from pancreatin. We optimized the technology by studying the methods of purification and assured the technology as: The crude extraction from the dissolution of Pancreatin is directly absorbed on the DEAE gelose fast flow columnEquilibrating buffer is 0.01mol/L NaoAc-HoAc buffer(pH4.5; eluting buffer is 0.2～0.35mol/LNaCl in 0.01mol/LNaoAc-HoAc buffer (pH4.5), and then be eluted by two steps to acquire the peak of kallikrein.The solution which can"t be adsorbed by DEAE gelose fast flow column is adsorbed on affinity chromatographic column Equilibrating buffer is 0.01mol/LTris-HCl buffer(pH7.5, eluting buffer is 0.5mol/LNaCl in 0.01mol/Ltris-HCl buffer(pH7.5)and then be eluted by one step to acquire the peak of trypsin.The solution which can"t be adsorbed by is pretreated with 30%～80%(NH_4)_2SO_4 fractional precipitation, the deposition of the precipitation is dissolved to beabsorbed on phenyl gelose fast flow columnhydrophobic interaction chromatography condition is Equilibrating buffer is lmol/L(NH_4_2SO_4 in 0.01mol/LNaoAc-HoAc buffer(pH4.5), eluting buffer is 0～0.6mol/L(NH_4)_2SO_4 in 0.01mol/LNaoAc-HoAc buffer (pH4.5) and then be eluted by two steps to acquire the peak of chymotrypsin.

本研究考察了各种纯化方法，将离子交换层析、亲和层析和疏水层析三种分离纯化法相结合，建立了激肽释放酶、胰蛋白酶和糜蛋白酶三酶的联产工艺：胰酶用pH4.5醋酸缓冲溶液提取后，粗提液直接上DEAE-琼脂糖快胶柱吸附平衡缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5，洗脱缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5)含0.2～0.35mol／LNaCl分两步洗脱，收集激肽释放酶的洗脱峰；DEAE-琼脂糖快胶的未吸附液上亲和层析柱分批吸附平衡缓冲液：0.01mol／LTris-HCl缓冲液(pH7.5，洗脱液：0.5mol／LNaCl溶液，一次洗脱，收集胰蛋白酶洗脱峰；最后，亲和层析未吸附液用30％～80％硫酸铵分级盐析处理，沉淀溶解后用上苯基—琼脂糖快胶吸附平衡缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5含1mol／L(NH_4)_2SO_4，洗脱缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5)含0～0.6mol／L(NH_4)_2SO_4，分两步洗脱，收集糜蛋白酶的洗脱峰。

The reaction of triphenyltin with nitrous acid in aqueous phase in the presence and absence of O2 was studied by a laser flash photolysis technique.

利用激光闪光光解技术进行了有氧和无氧条件下氯化三苯基锡与亚硝酸水溶液的紫外光解反应研究。

In order to prepare bismaleimide/montmorillonite nanocomposites with high performance, Na-montmorillonite was modified with allyl-tri-phenyl phosphonium bromide via ion-exchange method.

通过离子交换法将烯丙基三苯基溴化交换到钠基蒙脱土的层间制备改性蒙脱土。

The 24h-LC50and 7d-KBCF of triphenytin to Chironomus plumosus larve,Galba pervia and Tubifex tubifex were studied.

研究了三苯基锡对羽摇蚊幼虫、小锥实螺、颤蚓的24 h-LC50和浓缩系数。

The 7 d-KBCF of Galba pervia to TPT at 10 and 20 μg·L-1 was 2 648,1 377,respectively.The 7 d-KBCF of Tubifex tubifex to TPT at 10,20 μg·L-1 was 41.7,48.7,respe...

同时还研究了三苯基锡对羽摇蚊幼虫口器和小锥实螺螺卵孵化的致畸作用。

Structure of the dehydration product I of pinacol under acidic condition was determine The results show that the dehydration reaction of pinacol gains an advantage over rearrangement reaction.

结果表明，在酸性条件下颇哪醇的脱水反应优于重排反应，由此合成了1，2，4-三苯基环戊二烯。

Preparation of the stemnucleus Ancymidol is introduced as raw material, after bromation, obtains the stemnucleus by salification with triphenylphosphine.

新型膦盐母核的合成：采用嘧啶醇作为原料，经过溴化，由三苯基膦成盐得到。

Some of the derivatives of triphenylcarbinol which contain a number of methoxy groups form halochromic salts even in aqueous solutions.

一些三苯基甲醇的衍生物甚至在水溶液中也可以形成加酸显色盐。

In order to probe the existence of nonthermal microwave effects, four synthetic transformations (Diels-Alder cycloaddition, alkylation of triphenylphosphine and 1,2,4-triazole, direct amide bond formation) were reevaluated under both microwave dielectric heating and conventional thermal heating.

为了探测非能微波效应的存在，四种合成转化反应（Diels-Alder环加成、三苯基膦和1，2，4-三唑的烷基化、酰胺键的直接合成）在微波介电加热和传统热加热两种情况下的重新评价。

Imposex in Gastropods from the Coastal Waters of China and the Biomonitoring of Organotin Compound Contamination Organotin compounds, especially tributyltin and triphenyltin , are widely used as biocidal additives in antifouling paints due to their effectiveness. However, they also cause damage to non-target organisms and are regarded as the most toxic material ever deliberately introduced into the sea.

有机锡化合物，尤其是三丁基锡(tributyltin，TBT)和三苯基锡(triphyltin，TPhT)因其良好的杀生效果而广泛应用于船舶防污漆，但同时对海洋生态系统也造成了严重的影响，并且被认为是迄今为止人为引入海洋环境中毒性最大的物质之一。

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。