查询词典 structure group

It is a natural chiral compound with three chiral carbon atoms and a reactive carbo- xyl group. Like some natural drugs, it has a aromatic diterpene structure with three rings.

它是含有三个手性碳原子的天然手性化合物，有一个反应性官能团——羧基，具有许多天然药物都具有的芳香型三环二萜结构。

Based on the analysis of the crystal structure of TTR-AcCoA complex and the property of its substrate TbL, a single-step mechanism through which TTR catalyses the inactivation of Tabtoxin by transfer an acetyl group to the toxin was proposed.

通过对TTR的序列及结构特征的分析，表明TTR属于GCN5相关的N乙酰基转移酶超家族，并且具有GNAT超家族蛋白中保守存在的组蛋白乙酰基转移酶催化核心。

The invention is characterized in that the molecule of the polymer adsorption material has a structure in formula I: in the formula, R is selected from the natural polysaccharides with amino groups and hydroxyls and the derivatives thereof or the chemosynthetic polymers, the molecular weight of which is from 6 KD to 500 KD; X is selected from a C0 to C6 paraffinic chain with O atoms, N atoms or OH groups; R1, R2 and R3 are selected from a C1 to C4 alkyl group.

生物医学材料领域中的水溶性阳离子多聚物吸附材料及其应用，包括采用带有氨基或羟基的天然多糖及其衍生物或者化学合成多聚物季铵化反应合成，其特征在于该多聚物吸附材料分子具有式的结构：式中，R选自粘均分子量范围为6KD～500KD的带有氨基或羟基的天然多糖及其衍生物或者化学合成多聚物；X选自含有O原子、N原子或者OH基团的C 0 ～C 6 烷链；R 1 、R 2 、R 3 选自C 1 ～C 4 的烷基。

The defects of articular cartilage were repaired with cartilage without chondral degenerations in group A, which was similar to the normal chondral structure.

结果：B、C组软骨损伤区形成骨纤维组织修复，术后12周，C组出现明显的软骨退行性变，B组无明显退变：A组软骨缺损区形成软骨样组织修复，且与邻近正常软骨层相连续，未见明显的软骨退变。

Expert group thinks through appraisal, this technology has a structure simple, to decoke is led tall, investment and moving fare is low, cover an area of a face to accumulate small, adaptability strong, by-product can reclaim use, need not increase desulphurization agent preparation and flue gas to remove dust the advantage such as equipment.

专家组通过鉴定认为，该技术具有结构简单、脱硫率高、投资和运行费用低、占地面积小、适应性强、副产物可回收利用、无需增加脱硫剂制备和烟气除尘设备等优点。

BACKGROUND: Chitosan and its derivant are environmental-friend natural macromolecular materials, characterizing by great flocculation and adsorption capacities caused by electrophilic group including amino and hydroxyl groups, as well as its long-chain molecular structure. So chitosan is widely used as flocculants in domains of sewage disposal, food refining as well as Chinese medicine purification.

背景：壳聚糖及其衍生物是环境友好的天然高分子材料，其分子中丰富的带电基团如氨基、羟基以及长链分子结构赋予其优良的絮凝吸附能力，被作为絮凝剂广泛用于工业用水、食品精制以及中药液纯化等领域。

The extraction equilibrium constants of Nd , Eu , Am in the system of seven monoacidic organophosphorus compounds dodecane 1. 0mol/l NO〓are reported. The dependency of the extractability on the PO〓function group、bonding charactor、metallic ion species and the structure of substitute has been examined.

给出了七个烷基磷酸的正十二烷熔液从1.0mol／lNO〓水溶液中萃取Nd、Eu、Am的平衡分配常数Kex，考察了萃取剂PO〓官能团、萃合物成键特性、金属离子及取代基结构与萃取性能间的关系，发现了：（1）可运用取代基自由能加和模型预测辛基膦酸辛基酯对La、Eu、Nd、Am等三价离子的平衡分配数据。

PVC Card - Business card printing 】Starting stage: toddlerwho Chinese modern business card printing and membership card technology has remained backward state, and the reforms and opening up huge domestic market demand, makes it possible for a large number of business card printing and membership card-making machinery manufacturing enterprise attention the " business card printing and membership card to make a fast, simple, flexible small initial investment," mechanical structure is relatively straightforward, as a result of small offset printing press from abroad or related technologies such as surveying and mapping of imitation, a group of home-made small offset printing press finally emerged on the market, although it is still a lack of quality, performance bugs such as too, but small offset printing press did meet the cultural Office and entry-level commercial business card printing and membership card industry a lot of business card printing and membership card making machine due to a shortage of market demand, for a time, and that a number of small DependsOn… an offset printing press manufacturer drivage won the first gold of the barrel.

起步期：不矫健学步华夏传统制卡和会员卡制作技艺不断处于迟滞长进的状况，而变革闭塞所带来的浩不小阛阓需求，使得不国际一众量制卡和会员卡制作板滞创作发明企业不兵眼光投向了&制卡和会员卡制作独一、板滞飞迟、不初期投资小、板滞布局不绝差独一&的小胶印机，于是堵住从国际引进或测绘步武等不盖技艺，一批舶来小胶印机毕竟面世了，尽管还是板命质量丰盈、本能机能不敷安定等弊端，但小胶印机的确满意了文化办公范畴及回家级贸易制卡和会员卡制作范畴众量的制卡和会员卡制作机需求，一工夫阛阓求过于供，这也为结果众家小胶印机创作发明商掘得了第一桶金。

On the basis of analysis of representation, research conditions and authors cultural background, this study selected the Arhorchin Banner of Inner Mongolia as study area and Arhorchin Mongols as research object of the study ethnic group, aimed to understand the contents, structure and value of Arhorchin Mongolian ethnobotanical knowledge.

本项研究旨在分析具有代表性、可供研究条件和研究者文化背景的基础上，选择内蒙古自治区阿鲁科尔沁旗为研究地区，对阿鲁科尔沁蒙古族为研究人群，运用随机访谈、半结构访谈、结构访谈、语言分析和植物学调查等民族植物学研究的方法，对阿鲁科尔沁蒙古民族植物学知识的内容、特征和价值进行了定性和定量的调查研究。

In the second group of which pancreas allogenic graft was made combining with duodenum: schistic necrosis of pancreatic gland alveolus at 3 d post operation, necrosis of pancreatic folia and pancreatic islet at 5 d post operation, widespread necrosis and disappear of structure at 7 d post operation were observed.

胰、十二指肠移植组：术后3 d胰腺腺泡细胞片状坏死；术后5 d胰腺小叶和部分胰岛细胞坏死；术后7 d腺泡细胞大片坏死，胰岛结构消失。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。