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In addition,the one complex containing benzoaza-15-crown-5 pendant has a relatively higher catalytic activity over another one containing morpholine,which may be due to the preponderant effect of hydrophobic environment of the former.

Schiff碱类金属配合物除在氢化反应、环氧化反应、聚合反应、仿生催化氧化等方面得到广泛的应用外[5],近两年来,我们发现Schiff碱金属配合物也能有效地促进酯的水解或剪切4

By adding Al into V9P8-en, researching the order of doping the reactants, thepH of originative gel, the reactants' filling volume, the form of Al source and V source,the effect that the additive rate of V : P : Al have on the productions and so on, getsome data.

一、进行了V9P8-en添加Al元素的实验,研究了起始物的添加顺序,起始反应溶液的pH值,反应釜中起始物的充填率,钒源、铝源的形式,钒、磷和铝的加入量之间的比率等对反应产物的影响。

In Clark-Lub's buffer solution of pH=3.6, protein combines with ferric-alizarin red S complex to form a ternary complex, which has a maximum absorption at 567 nm. The influencing factors and the spectral mechanism of the reactive system are studied.

在pH为3.6的Clark-Lub's缓冲溶液中,蛋白质与Fe-茜素红S络合物相互作用生成三元复合物,复合物的最大吸收峰波长λ=567 nm,考察了反应体系的各个影响因素,并对反应机理进行了初步讨论。

In chapter 2, concerning the chemistry of many kinds of olefin-coordinated alkoxycarbene iron complexes and their isomerized products previously synthesized by our group, we examined their thermolysis reactions and many novel thermolysis products were isolated.

第二章中,对于我们小组以往合成的各类烯烃配位的铁卡宾络合物及其异构化产物,为了研究其反应性能,我们从热解反应着手,研究了一系列烯烃配位的铁卡宾络合物及其异构化产物的热解反应,获得了一系列新奇的热解产物。

Second, using DBU as the base for enolization of propargylic esters of unsaturated acids 18e-k, we developed a tandem Ireland-Claisen rearrangement /isomerization reactions. It has been shown that the reaction sequence affords triene molecules 42a-b and 43a-b in moderated to high yields. Interestingly, with allyl hexa-3,5-dienoates 18i-j as the substrate, the rearranged products underwent further aromatization to give uniquely substituted benzyl acids 44a-b.

其次,以含有活泼质子的烯酸炔丙酯18e-k为底物,在DBU为烯醇化碱、TMSCl为硅试剂的条件下,底物18e-h发生了Ireland-Claisen重排/异构化串联反应,得到完全共轭的三烯类化合物42a-b及43a-b;而以己二烯酸炔丙基酯18i-j为底物时,重排/异构化后的产物进一步发生电环化等反应最终得到芳构化产物——取代苯甲酸类化合物44a-b。

Some approved aneugens Trip terygiuwlIypogaucum (evelHutch, colchicine, thiabendazole, a tropine sulfate,d-ubocurarine was added into the reactive system respectively and the changes of their absorption values were taken down during different periods under the conditions of 37 0C and 350nm .

本研究通过多步聚合和解聚合反应从猪脑中分离纯化微管蛋白,建立微管蛋白的体外聚合和解聚合反应平衡体系,并将已证实的非整倍体诱发剂(昆明山海棠根部水抽提物、2-(4′-噻唑)苯丙咪唑、硫酸阿托品、d-筒箭毒碱)分别加入此反应平衡体系中,于37℃、350nm条件下,记录此体系不同时期的吸光值变化,与阳性对照物和溶剂对照处理平衡体系后的吸光值在相同时间点作比较,以此评估这几类非整倍体诱发剂对离体条件下的微管蛋白聚合的影响,寻求这几类非整倍体诱发剂是否可通过抑制微管蛋白聚合作用途径而诱发非整倍体。

During the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)CH=CH2, several stable osmacycles with novel structure, such as osmabenzenes, osmafurans, osmacycles containing intramolecular-coordinated allene, intramolecular-coordination osmacycles containing osmacarbene, an osmacyclopentadiene, were isolated during the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2-CH=C(PPh_3C(=CH_2)CH=CH_2.In addition, some convenient and efficient methods to prepare these osmacycles were developed.

首先,合成出两种具有反应活性的金属杂五元环IC配合物OsCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2和OsCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)-CH=CH_2,并对它们进行了系统表征;进而,研究了这些活性五元配合物的反应性,合成出多种稳定的锇杂环配合物,其中包括锇苯、锇呋喃、含配位联烯的锇杂IC环化合化物、含锇卡宾的IC环化物、首例锇杂环戊二烯化合物等多元化的产物。

RESULTS : The hypertrophic cardiomyocyte NTPase Vmax values at 1 week group and 4 week group were all increased significantly in both of ATP and GTP as substrates with much higher argumental extent in early hyper group; their Km values were kept constant in early hyper group and were decreased only in late hyper groups.

结果:早、晚期肥大组心肌细胞核被膜NTPase最大反应速率以ATP为底物时较对照组增加25%~62%(P<0.01),以GTP为底物时增加8%~44%(P<0.01),其中晚期肥大组NTPase最大反应速率增加幅度低于早期组。早期肥大组细胞核被膜NTPase Km值不变,晚期组NTPase Km值下降,以ATP和GTP为底物时晚期肥大组Km值分别下降22%和86%。

An optimized PCR reaction system for ISSR analysis was established:PCR was performed in a 20μl reaction mixture with 5μmol/L DNA, 2.5mmol/L Mg~(2+), 0.3mmol/Lof each dNTP, 300nmol/L primer, 1U Taq polymerase and 1×Buffer. Using 9 ISSRprimers,the genetic diversity among 23 Arrhenatherum elatius L.

3遗传多样性研究结果表明:通过模板DNA、引物、Mg~+、dNTPs、Taq酶五种ISSR反应体系的影响因素进行L_(16)(4~5)正交试验,建立了高燕麦草ISSR反应体系:20μl的反应体积中含有模板DNA 5μmol/L,引物300nmol/L,Mg~+2.5mmol/L,dNTP 0.3mmol/L,Taq酶1U及1×Buffer。

Under certain experimental conditions,the Terbiumbasic Calbonate can be dissolved in aqueous solution of nicotinic acid to yield an Orange Tb Complex, which has a broad characteristic absorption band between, 370—410 nm The autoreduction of the Tb—Complex was studied by means of spectrophotometric method, It was determined by experiments that the reaction order is equal to two and the apparent activation energy of the auto—reduction is equal to 68.4±0,8KJ/mol.

在一定条件下,Tb的碱式碳酸盐可以溶解在烟酸的水溶液中形成橙黄色的络合物,该络合物在390nm波长附近有一宽带特征吸收峰。消光值在0。~1.0范围內与Tb的浓度具有直线关系。分光光度法对Tb自还原反应研究确定:于15℃及烟酸浓度为0.35M时,当pH值小于6.0条件下,随pH值的增加,其自还原速度常数减小,该自还原反应级数为二,反应活化能为68.4±0.8KJ/mo1。

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