查询词典 intermediate

We researched on the prepartion of pivotal intermediate 2 and 3 for 1 P-methyl carbapenem antibiotics from intermediate 1, which is subjected to Reformastky reaction, N-alkylation, Dieckmann-type cyclisation, enolization, ester condensation etc. in sequence. The synthesis route of document is optimized by us.

我们研究了1β-甲基碳青霉烯类重要中间体的合成，从中间体1出发经Reformastky反应、水解反应合成出中间体2；经Reformastky反应、烷基化、Dieckmann环合、烯醇化、酯化合成出中间体3，并对其中各步反应作了优化和探索。

In situ FTIR spectroscopic studies suggest that ethylene dialkoxide(-OCH_2CH_2O-) is an intermediate over polymeric Mo species while ethoxide(-OC_2H_5) might be an intermediate over the monomeric Mo species.

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The results show that this reaction proceeds in two step: 1 silylene and formaldehyde form an intermediate complex, which is a kind of exothermal reaction with no barrier; 2 the intermediate complex isomerizes to sive the product. The barrier for the second step is 51.4kJ·mol^-^1 at MP2/6-31G^*//6-31G^* level (with zero-point energies correction). In view of dynamics and thermodynamics, it is between 300～400K that the reaction will have not only larger spontaneous tendency and equilibrium constant but also quicker reaction rate.

结果表明，此反应历程由两步组成：1硅烯与甲醛生成一中间配合物，是一无势垒的放热反应，2中间配合物异构化为产物，此步势垒经零点能校正后只有51.4kJ·mol^-^1(MP2/6-31G^*//6-31G^*)；从热力学和动力学的综合角度考虑，该反应在300～400K温度下进行为宜，如此，反应既有较大的自发趋势和平衡常数，又具有较快的反应速率。

The paper analyses ideographically the pertinence and dialectical relationship of logistics industry with the development of national economy and the adjusting of industry structure, analyses the characters of logistics industry enterprise-spread and enterprise-relationship as a kind of industry from the point of industry-related, explained the analysis route of the effect of logistics industry with other industries on base of enterprise-spread and industry"rate of intermediate demand"and"rate of intermediate devotion".

文章具体分析了物流业与国民经济发展及产业结构调整的相关性联系和辨正关系，并主要从产业联系的角度分析了物流业自身作为一种具体的产业所具有的产业波及效应和产业关联的特点，提出了基于产业波及的物流产业与其他产业影响的分析路径，并根据这一分析思路详细分析了物流业对第三产业的提升效应和对其他产业的带动效应，通过计量分析工具对物流产业发展与产业结构之间的关系进行了实证分析，有力的说明了发展物流产业对优化产业结构的作用。

Of the 14 SMAs, 11 (79%) showed low to intermediate density as compared with muscles, 3 (21%) showed homogenous and intermediate density; 12 (86%) appeared as lobulate lesions; 10 (71%) had incomplete bone septa; 9 (64%) showed root resorption of the neighboring teeth; 13 (93%) showed cortical perforation; 6 (43%) had soft tissue masses; all SMAs showed well-defined margins. Of the 11 SMAs examined by enhanced studies, 9 (82%) showed strong enhancement.

SMA病变中11例(79%)平扫时与肌肉相比呈等低混杂密度，3例(21%)呈较均匀等密度，12例(86%)边缘呈分叶状，13例(93%)骨壳被穿破，6例(43%)形成软组织肿块，但病灶的边界都清楚，10例(71%)见不全骨性分隔，9例(64%)邻近牙根被吸收，11例行增强扫描的病例中9例(82%)呈显著强化。

CT images of the 6 UAs showed homogenous and low density in comparison with muscles. Of the 6 UAs, 2 (33%) were lobulate, 4 (67%) were regularly round or oval; 1 (17%) had bone septa, 2 (33%) had root resorption of the neighboring teeth, 3 (50%) had cortical perforation. All UAs showed well-circumscribed margins without soft tissue masses. Three UAs were examined by enhanced studies and showed mild to moderate enhancement of the wall. Of the 5 MAs, 3 (60%) showed low to intermediate density as compared with muscles, 2 (40%) showed homogenous and intermediate density; 3 (60%) had bone septa; 3 (60%) showed root resorption or destruction of the neighboring teeth. All 5 MAs were lobulate with cortical perforation, soft tissue masses, and ill-defined margins. All 3 MA5 examined by enhanced studies showed strong enhancement. CONCLUSIONS: SMAs are usually seen in middle-aged patients.

UA病变平扫时与肌肉相比内部都呈均匀低密度，其中4例(67%)呈较规整的圆形或椭圆形，2例(33%)呈分叶状，3例(50%)局部骨皮质有缺损，但未见软组织肿块形成，l例(17%)见不全骨性分隔，2例(33%)邻近牙根有吸收，行增强扫描的3例囊壁均呈轻中度的强化。5例MA的病灶都呈分叶状，且骨皮质均被穿破并有软组织肿块形成，边界不清，其中3例(60%)平扫时与肌肉相比呈等低混杂密度，2例(40%)呈较均匀等密度，3例(60%)可见不全的骨性分隔，3例(60%)见牙根的吸收或破坏，行增强扫描的3例都呈明显强化。

Many Oriental are round face model, but many moonfaced people like the cent intermediate to seam, the hair is clingy scalp, intermediate cent is seamed, make the face appears rounder; Some still likes in the future to comb or the hairstyle of take everything into one's own hands, can make a face bigger, rounder only so.

不少东方人是圆脸型，但不少圆脸的人喜欢中间分缝，头发紧贴头皮，中间分缝，使脸显得更圆；有的还喜欢往后梳或一把抓的发型，这样只会使脸更大、更圆。

Usage: useful for pharmaceutical intermediate, especially useful for intermediate of synthesis aids inhibitor and metallocen catalyst for olefine polymerization.

用途：用作有机功能材料，医药合成中间体以及烯烃聚合用金属茂络合物催化剂配位体。。

Usage: useful for pharmaceutical intermediate,especially useful for intermediate of synthesis aids inhibitor and high temperature resistant resins and metallocen catalyst for olefine polymerization.

用途：用作各种医药合成中间体，特别是抗艾兹病药物，治疗糖脲病药物以及治疗心律不齐病药物的中间体以及烯烃聚合用金属茂络合物催化剂配位体和透明的耐热性树脂原料。

Organotin intermediate was detected and a mechanism involving the formation of organotin intermediate was proposed based on the experimental results.

本方法对醛和酮的具有很高化学选择性，并在反应过程中检测到有机锡中间体，阐明了反应机理。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。