酸性方法

A Photolysis of 5＇-deoxyadenosylcobalamin in neutral aqueous solution and methylcobalamin in neutral and acid aqueous solution has been investigated using pulsed, time-resolved photoacoustic calorimetry in the temperature range of 10-30℃. The resultant enthalpy changes, namely CoC bond dissociation energies for the above cobalamins, 129±17, 163±21 and 176±23kJ/mol, respectively, are consistent with the values obtained by thermolytic kinetic method.

运用光声量热法研究10～30°C温度范围内辅酶〓在中性水溶液中和甲基钴胺素在酸性和中性水溶液中的光解反应，测定了其光解反应的焓变，即Co—C键离解能分别为129±17，163±21和176±23 kJ／mol，这些值和文献中用热分解动力学方法测得的值一致。

And to study its antitumor activities. MethodsThe active fraction of Thlaspi arvense linn was extracted and identified by nethanol-extraction,tart-Al2O3 colum chromatography,TLC and HPLC.

方法采用甲醇萃取、酸性氧化铝层析柱层析和谱图分析对寨卡有效部位进行分离提取和鉴定，采用S180荷瘤小鼠模型和CT-26荷瘤小鼠模型，探讨寨卡有效部位提取物的抗肿瘤活性。

Objective: To establish a simple, rapid, accurate method for the determination of uronic acid and neutral sugar in acidic polysaccharides.

目的：建立一种操作简单、快速、准确地测定酸性多糖中糖醛酸和中性糖含量的方法。

Objective: To establish a simple, rapid, accurate method for the determination of uronic acid and neutral sugar in acidic polysaccharides.

摘 要：目的：建立一种操作简单、快速、准确地测定酸性多糖中糖醛酸和中性糖含量的方法。

After careful analysis and experiments, we successfully put forward a strategy that can be used to quantitatively determine the glycosyl residue compositions of acidic polysaccharides and other uronic acid-containing glycoconjugates.

经过仔细分析与实验，我们建立了一种新的测定酸性多糖糖残基组成及其比例的分析方法，我们称之为&糖组成分析的新两步水解法&。

Ca2+-ATPase and acid phosphatase of fiber in Phyllostachys edulis culms during secondary wall formation were studied. Early, intact double karyotheca remained in fiber nucleus, while nuclear chromatin agglutinated.

利用显微和细胞化学方法，对毛竹茎秆纤维次生壁形成过程中超微结构变化以及ATP酶、Ca2+-ATPase和酸性磷酸酶的超微细胞化学定位进行了研究。

After separation,the sample is further alkalized by microwave catalysis and at last,the activated white carbon is obtained.

针对以往从高岭土提取白炭黑传统方法中存在的某些缺点，对滇南某高岭土采取中温活化、除杂，在酸性介质中微波液相催化反应，分离后，再进一步在微波催化下液相碱溶，最终提取了活性白炭黑产品。

The reaction can be carried out in a non-aqueous solution and 4-aminopyridine can be diazotized with this method.

这个方法表现出如下优点：1），整个重氮化与偶联反应均在非水溶剂中进行；2），改变原料不同投料比，可以分别得到含有一，二，四偶联产物为主的反应产物；3），可以合成在酸性水溶液中不易重氮化的4-氨基吡啶的偶氮化合物。

In the experiment, preparation conditions of particle MnO_2 by electrolyzing MnSO_4 acid solution with two kinds of electrode made of different materials were optimized and compared, effect mechanisms of different factors were discussed, and diameter, specific surface area and crystal phase of the particle MnO_2 was all determined by several means such as laser diameter analysis, IR and XRD.

实验中采用在线超声电氧化的方法，对两种不同材料的电极电解MnSO_4酸性溶液制备微粒MnO_2的条件进行了优化和对比分析，探讨了各种因素的影响机理，并通过激光粒度分析仪、红外光谱仪和X射线衍射仪对微粒MnO_2进行了表征，测定了微粒的粒径大小、比表面积和晶相构成等。

The conventional method of sizing used soaped rosin and aluminum sulfate at acid condition , pH 4 to 5, which is so called acid sizing.

传统的施胶方法是利用皂化松香胶和硫酸铝在pH值为4～5的条件下进行的，即所谓的酸性施胶。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。