查询词典 chemical compound

Fumaric acid, which is considered as an important platform compound and fine chemical, has been widely used in many fields such as materials, medicine, foods, feeds and so on.

富马酸是一种重要的平台化合物和精细化学品，广泛应用于材料、医药、食品及饲料添加剂等领域，市场潜力巨大。

The research shows that the cement grinding aid can be made from the waste materials of chemical works such as glyceric distillation residue and compound glyceric distillation residue.

研究表明：利用轻化工厂甘油蒸馏残渣、复合甘油蒸馏残渣等下脚料做水泥助磨剂，能取得与三乙醇胺、三醋酸甘油酯相同的效果，且成本前者较后者低。

Several anti-tumor cell lines and carbonic anhydrase Ⅱ model were established. More than 10000 compounds and extracts from plants were screened using these models and about 10 compounds showed strong inhibitory activities. Two species of plants Inula helianthus-aquatica and Saussurea deltoidea were chosen to investigate chemical and bioactivity constituents based on the results of screening of extracts and fractions. 58 compounds were isolated and identified from these two plants, 6 compounds were found to be new and 14 compounds showed anti-tumor activities. We also studied the anti-tumor mechanism of the compound bigelovin isolated from Inula helianthus-aquatica. Bigelovin was found with apoptotic activity against cell line U266 by lowering the amount of important transcription factor E2F-1 which inhibits the cell cycle at G0/G1 stage. Docking study on 7 natural new phenolic inhibitors of CA Ⅱ and 3D-QSAR study on 61 sulfonamide inhibitors of CA Ⅱwere also investigated. The calculated results were in good correlation with experimental results.

基于以上两种重要疾病和研究组方向，本论文工作开展了多个肿瘤细胞株和碳酸酐酶Ⅱ靶标模型的建立和筛选工作，累计筛选1万多个/次样品，发现10余个活性较强化合物；从粗提取物筛选结果中选取两种抗肿瘤活性强的菊科植物水朝阳旋覆花(Inula helianthus-aquatica)和三角叶凤毛菊进行了系统化学和活性成分研究，分离鉴定了58个化合物，发现6个新化合物和14个抗肿瘤活性化合物；通过合作对水朝阳旋覆花中活性较强的bigelovin进行了抗肿瘤作用机制研究，发现它可能是通过降低G2期重要的转录因子E2F-1，致使细胞周期阻滞在G0/G1期，引起多发性骨髓瘤U266细胞凋亡；开展了7个新的天然酚类CAⅡ抑制剂的对接研究和61个合成的系列磺酰胺类CAⅡ抑制剂的3D-QSAR分析，结果表明计算与实验一致。

The macrocyclic polyamines are a kind of excellent ligands and have a substantially high binding affinity with transition metal ions. Macrocyclic polyamine metal complexes as enzyme models are widely used in chemical biology, medicine and gene therapy. 1, 4, 7, 10-tetrazacyclododecane is a representative macrocyclic polyamines compound and shows high binding affinity with transition metal ions, such as Zn, Cu and Co. Their metal complexes especially multinuclear complexes were widely used in DNA, RNA recognition.

大环多胺化合物是一类性质独特的优秀配体，具有良好的金属配位能力，其金属配合物作为人工酶模型广泛应用于核酸结构及功能研究、基因表达与调控、抗癌药物的研制等生物、化学和医学领域。1，4，7，10-四氮杂十二烷是典型的大环多胺化合物，对过渡金属离子Zn， Cu and Co有良好的配位能力，这些金属配合物特别是多核金属配合物被广泛应用于DNA识别中。

To gain better chemical and physical performance, a compound needled filter felt comprises of 2 or more kinds of fiber material.

它是由二种或二种以上的耐高温纤维混合及层壮复合，以实现更高、更新的物理及化学性能。

According to the chemical composition and biological characteristics, the hernia repair materials are divided into three kinds: nonabsorbable, absorbable and compound materials.

根据材料学的化学成分和生物学特性可将疝修补材料分为不可吸收材料、可吸收材料和复合型材料3大类。

The chemical constituents of the plants in the family Paeoniaceae, containing a single genus Paeonia, are reviewed in aspects of the structure, compound name, bioactivity, resource and reference.

第一部分对单科单属的芍药科植物的化学成分的结构、名称、生物活性、来源和参考文献进行了综述。

In this review the structure characteristic,bonding and spectral properties,synthetic methods and chemical reactivity of tricoordinated pentavalent phosphorus Compound with the structure are described.

对具有R－P结构的三配位五价磷化合物的结构特点、成键及光谱性质、合成方法及化学反应性能作了一描述。

In this paper,pleny lolanine and n-butyl acetate perform compound organic substrated chemical oscillating reactions .

本文报导了L—苯丙氨酸—乙酸丁酯为复合有机底物的化学振荡反应。

Metallic nickel powder is taken as a matrix; a chemical method is adopted to prepare a product required by cladding ferrites on the surface of the nickel powder; the mass ratio of the ferrites to the nickel compound powder is between 1 to 5 and 1 to 0.01; the grain diameter of the nickel powder is 0.5 to 5 microns; the ferrites are ferrites of spinel type or ferrites of magneto plumbite type.

以金属镍粉作为基体，采用化学方法在镍粉表面包覆铁氧体层制得所需产品，铁氧体与镍复合粉体的质量比为1∶5～1∶0.01，镍粉粒径为0.5～5μm，铁氧体为尖晶石型铁氧体或磁铅石型铁氧体。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。