查询词典 in the presence of

In the presence of SC4A, the thermal stability of DS in aqueous solution increases significantly while its photosensitivity still remains high.

在SC4A存在下，DS在水溶液中的热稳定性大大提高，同时仍保持较高的光敏性。

Some new α,β-unsaturated sulfones were prepared by condensation of 4-nitrophenylsulfonylacetates with aromatic aldehydes in cyclohexane/CH_3CH_2OH in the presence of catalytic amounts of piperidine.

不饱和砜是以对硝基苯磺酰基乙酸酯为原料与芳香醛在六氢吡啶醋酸盐催化下发生缩合反应制得的。

In the second part, we developed a new approach for the preparation of highly dispersed carbon black platinum nanoparticle with different geometric shapes by introducing clay (0 to 33%) as a dispersing agent in 5% Nafion co-solvent suspension without any organic solvents. FE-SEM analysis of CB/clay (100/0, 85/15, 67/33) was achieved CB particles with an average diameter of 40-60 nm. The hydrophilic property of the hybrid material was effectively improved in the presence of the clay was observed in sessile-drop test.

第二部分中我们发现在燃料电池之触媒制备常利用碳黑作为载体，碳黑在水中分散程度不一，而有机分散剂之电阻质较高常导致触媒用量提高增加成本，在本论文中我们利用几何片状结构的黏粒矿物与Nafion溶液做为分散剂巧妙的将碳黑分散，在不同黏土矿物与碳黑之不同比例(clay/CB 0/100， 15/85， 33/67)下进行分散，在SEM及TEM鉴定下证明其分散程度而碳黑粒径约40-60 nm。

METHODS 3-hydroxyestrogen reacted with dimethylsulfate in acetone in the presence of potassium carbonate.

方法以含3－酚羟基的雌激素类化合物为原料，丙酮为溶剂，在碳酸钾存在下与硫酸二甲醋反应。

Nica . After some preliminary remarks, the writer proceeds: We first transmit to you the writing concerning the faith which was put forward by us, and then the second, which they have published after putting in additions to our expressions. Now the writing presented by us, which when read in the presence of our most religious emperor was declared to have a right and approved character was as follows:. As we have received from the bishops before us both in our first catechetical instruction and when we were baptized, and as we have learned from the Divine Scriptures, and as we have believed and taught in the presbyterate and in the office of bishop itself so now likewise believing we offer to you our faith and it is thus.

"经过一些初步意见后，笔者得益："我们首先向你转递写作有关的信仰是我们提出的，那麼第二个，其中，他们先后发表后，在增补为我们的表情，现在的写作由美，当他看过，在香港大多数宗教皇帝被宣布为有权利，并批准了字的内容如下：，因为我们已经收到了来自主教面前无论是在我们的第一catechetical指示和当我们受洗，并作为我们了解到，从神诵经，因为我们相信并教导，在presbyterate中和办公室的主教本身，所以现在同样相信我们提供给你我们的信仰和因此，它是。

In addition, low 〓 suppressed red light responses of L-HCs more pronouncedly than green ones in the presence of IBMX.

此外，在IBMX持续灌流情况下，低钙更明显地压抑LHC对红光的反应。

Indirect determination of total acid-soluble aluminum in natural waters by oscillopolarography in the presence of pyrocatechol violet is presented.

报道邻苯二酚紫-示波计时电位法间接测定天然水中的总酸溶铝。

By using a mixture of aromatic hydrocarbon and water as a binary solvent,reaction of pyrogallol with PhCCl 3 was carried out in the presence of a catalyst(ZnCl 2?AlCl 3 or SOCl 2).2,3,4-Trihydroxybenzophenone was obtained in yields of 80%-87% with the advantages of easy control,stable yield,high product quality and low cost.

以焦性没食子酸为起始原料，在惰性气体保护和催化剂(ZnCl2、AlCl3或SOCl2)的存在下，在芳香烃与水组成的二元混合溶剂中，与三氯甲苯反应，经过芳香烃溶剂的后处理，可以得到2，3，4-三羟基二苯酮，产率最高达87%。

Mechanism of catalyzed oxidation of SO2 with pyrolusite suggested that the process was combined catalysis in the presence of Mn and Fe both in solution and solid.

软锰矿催化脱硫的机理分析表明，过程是液相Mn、Fe协同催化与固相催化作用相结合。

In the presence of both A and N or BP,β-CD more effectively shields 1-BrN from quencher in aqueous solution. Greater rigidity of the complex was achieved.

因此，与β-CD∶1-BrN∶A和β-CD∶1-BrN∶N或β-CD∶1-BrN∶BP三元包络物相比，得到了更强的磷光。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷