查询词典 in the presence of

On 21 February 2008, Arburg opened its new American Technology Center California in Irvine , CA , in the presence of Arburg's Managing Partners, Juliane and Michael Hehl.

2008年2月21日阿博格公司在美国加里福利亚设立了新的技术中心，阿博格总经理Michael Hehl及Juliane女士出席了此次典礼。

Hybrid mesoporous molecular sieve materials with hexagonal mesoporous structure and covalent bonded polyoxometalates were synthesized based on tetraethoxysilane anti lacunary polyoxometalate, SiW11, via sol-gel method in the presence of triblock copolymers P123 as the structure-directing agent. The influences of molar ratio of inorganic precursors and aging temperature on the structure and the loadings of SiW11 in the hybrid materials were investigated. Some reaction details in the synthesis were revealed.

用嵌段共聚物P123为模板剂，正硅酸乙酯和缺位结构的多金属氧酸盐SiW11为无机前驱体，由溶胶－凝胶法合成了具有六方结构和SiW11共价键联的介孔分子筛杂化材料SiW11/SBA-15，着重考察了无机前驱的配比和老化温度对杂化材料结构及SiW11负载量的影响。

Was simultaneously injected into cisterna magna at the second injection blood in the presence of subarachnoid blood. At 2 to 4 days, GFP was expressed in leptomeninges over the brain stem, cortex and cerebral arteries, smooth muscle cells of small vessels were occasionlly transduced. GFP was expressed in adventitia of spastic basilar artery on days 2 (day 5 after first injection blood) after injection 〓, but was undetectable by days 4, transgene was not expressed in medial or intimal layers. The prensence of subarachnoid blood can not prevent access of adenovirus to vessels and transgene expression.

注入腺病毒载体后2天（初次注血第5天）行荧光显微镜、免疫组织化学和RT-PCR检测，结果在颅内大血管如基底动脉的外膜可见外源基因的表达，而外源基因不能转移至血管中膜和内膜，4天时（初次注血第7天）基底动脉的外膜中外源基因表达消失；注入腺病毒载体后2～4天，外源基因可以有效转移至颅底软脑膜细胞，小血管外膜和平滑肌层也可见外源基因的表达，表明蛛网膜下腔内的血凝块不能阻止腺病毒载体介导外源基因转移至颅内血管。

The reaction of [60] fullerene with dimethyl malonate and diethyl malonate in the presence of manganese acetate dihydrate for 20 min afforded singly bonded [60] fullerene dimers in a 1, 4-addition pattern.

Mn作为一类良好的自由基引发剂，能有效地催化C〓与丙二酸二甲酯和丙二酸二乙酯的自由基加成反应，生成C〓的二聚体。在回流的氯苯中随着时间的的延长，二聚体分解成1，4-双加成的C〓衍生物。

In this paper, the polymerization kinetics, reaction mechanism, viscosity, molecular weight and MWD of the ring-opening polymerization of cyclosiloxane in the presence of water will be investigated expermentally and analyzed mechanistically in detail.

就具体内容而言，本论文主要进行了以下几个方面的工作：建立反应混合物转化率与凝胶渗透色谱谱图峰面积的标准曲线，采用GPC测定反应混合物转化率和聚合物的分子量及分布。

In the presence of acid catalyst, APG is formed by use C8 - C14 monohydric alcohols、low-carbon alcohol and glucose monohydrate with one step synthesis reaction, and it could be used without fractionation in most applications.

在酸性催化剂存在下，用C8～C14单羟基醇和低碳醇与一水合葡萄糖反应，一步合成较高纯度，在大多数应用场合不经分馏而直接使用的浅色烷基糖苷。

Objective To observe the survival of Neisseria gonorrhoeae in the presence of karyote and in vitro.

目的 观察不同浓度的淋球菌在有核细胞内外和体外的存活状况。

Moreover, in comparison of birth lengths in eight subgroups defin ed by organic solvent status (nonexposure/exposure) and maternal genotype for MS P1 and GSTM1, in the presence of organic solvents ' exposure , the birt h length was a clear gradient of adverse effects .

3我们将芳香烃溶剂，母亲基因MSP1（野生型、杂合子/突变型）与基因GSTM1分为8组，在芳香烃溶剂暴露组，可见母亲基因型致出生身长呈斜线降低，然而在芳香烃溶剂非暴露组，其母亲基因型对出生身长的影响无明显改变。

In the hydroxylation of phenol with H〓O〓 in the presence of Ti-ZSM-5, water is best solvent. It produces catechol and hydroquinone simultaneously, and catechol/hydroquinone ratio is approximately 0.85. The results show H〓O〓 utilization ratio increase 14%, when nonoxidizable weak acid HAc is added into the reaction system. Under the conditions of Ti-ZSM-5 as catalyst, phenol/H〓O〓 ratio being 10, a little HAc, temperature 75℃, reaction time 6h, H〓O〓 utilization ratio reaches 74. 6mo1% in the reaction.

对Ti-ZSM-5催化苯酚羟基化的研究结果表明，水是最好的溶剂，羟基化有邻、对苯二酚两种产物，并且邻苯二酚/对苯二酚摩尔比可维持在～0.85左右；向反应体系中加入非氧化性弱酸性助剂HAc时，H〓O〓有效利用率较未加入助剂时可提高14mol%；当催化剂用量为8g/100g苯酚、苯酚/H〓O〓比为10、反应温度75℃、添加少量HAc的条件下，反应6h后，H〓O〓有效利用率可达74.6mol%。

There is at present still no prenatal blood test for BWS, however an elevated AFP level in a singleton pregnancy in the presence of an omphalocele should bring BWS into discussion.

目前仍然没有针对BWS的产前血液测试，然而怀孕期间的AFP水平升高和脐突出的出现应当考虑BWS的可能。

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