查询词典 compounds
- 与 compounds 相关的网络例句 [注:此内容来源于网络,仅供参考]
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By comparison among concentration of nitrogen compounds, relative contents of pryyolic N-H shielded carbazoles and parameters of C21-/C22+、Pr/nC17 , the results show that slight biodegradation has little effects on the relative contents and distribution of pyrrolic nitrogen compounds, but has certain effect on its concentration.
根据2类原油中含氮化合物浓度、屏蔽型含氮化合物的相对含量与反晕原油生物降解的地化参数C21-/C22+、Pr/nC17等指标的对比研究,发现生物降解作用对该区原油中含氮化合物的相对含量及其分布影响不显,运移作用仍然是造成含氮化合物分馏的主要因素。
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The geometric and electronic structures of quadruply bonded metal dinuclear compounds M2Cl4(PMe3)4 (M=Cr, Mo, W) and Mo2X4(PMe3)4 (X=F, Cl, Br, I) have been investigated by means of density functional theory method with TZ2P-STO basis sets. It was shown that the title compounds can be accurately predicted by DFT included ZORA relativistic correction.
采用密度泛函理论方法,在TZ2P-STO基组水平下,对金属四重键化合物M2Cl4(PMe3)4 (M=Cr, Mo, W)和Mo2X4(PMe3)4 (X=F, Cl, Br, I)的几何结构进行优化,分析了电子结构,并运用TDDFT方法对其低占据激发态进行了计算。
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Acq called alkaline copper quaternary (alkyl copper ammonium compounds), the main ingredient is copper compounds and quat, for advanced environment-friendly Pharmacy.
acq全名为alkaline copper quaternary,主要成分是铜化物和quat,为先进的环保型药剂。
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Quinonyl compounds were reducted to phenolic compounds in high yields promoted by aluminum triiodide ,and after the reaction with dienophiles in Diels Alder reactions concave adductions were combined.
在现场制备的三碘化铝促进下,醌类化合物发生还原反应以良好产率生成酚类物,并且在原位与亲双烯体发生Diels Alder反应从而生成凹状加合
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For confirmation of this ancient legend and found out the sexual improvement compounds the testosterone and NO in serum of mice were measured,the weight of sexual organs of mices was detected and the sex behaviour of mice was observed.The testosterone and NO concentration in serum of mice as indicator for screening some improving sexual compounds from Chinese chives was builted.1、The preliminary experiment of Chinese chives confirm sexual improvement functionThe sexual improvement function experiments of Chinese chives comparing with herba epimedii,herba cynomorii and radices morindae which were acknowledged as chinese herbals having sexual improvement function were carried out.The result was showed that the Chinese chives was confirmed having sexual improvement function,though its efficacy was less than herba epimedii,herba cynomorii and radices morindae.
为了证实古代医学认为韭菜的壮阳功能,揭示韭菜起温肾壮阳作用的化学物质基础,开发其功能性物质成分,本实验首先应用韭菜酒精初提液对小鼠睾酮、NO含量、性器官、性行为等指标的测定,验证韭菜是否具有改善性功能作用,然后以小鼠睾酮、NO含量等为指标对韭菜中的壮阳物质进行逐步分离和改善性功能作用筛选,以鉴定出几种改善性功能的物质。1、韭菜改善性功能的验证将韭菜与淫羊藿、琐阳、巴戟天三种有温肾补养功能的中草药进行比较,发现韭菜改善性功能作用不如淫羊藿、琐阳、巴戟天壮阳中草药的效果明显,但是韭菜还是具有显著的改善性功能作用的(P<0.001)。
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Halogenated aromatic compounds with great q〓(the most negative net atomic charges on an atom of the molecule), ENC (electron-nuclear attraction energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), qc (thenet atomic charges on the carbon atom of the weakest carbon-halogen bond) and E〓 tend to be reductively dehalogenated slow, while halogenated aromatic compounds with high values of △E (the difference of front-line orbital energy), EEC (electron-electron repulsion energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), Mw, q〓 and α tend to be reductively dehalogenated fast.
卤代芳烃化合物的整个分子的最负的原子净电荷,键序最小的碳卤键中碳原子的单中心项电子-核吸引能,该碳-卤键上碳原子的净电荷和E〓与该卤代芳烃化合物还原脱卤的速率常数负相关;而前线轨道间隙能,键序最小的碳卤键中碳原子的单中心项电子-电子推斥能,Mw,q〓和α与该卤代芳烃化合物还原脱卤的速率常数正相关。
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In the polysyllabic negatives part, the phenomena of lexical poly-syllabification during this period is exemplified by means of some compounds and the special usage of negatives, such as A-not-A question and resultative verb compounds.
在复式否定词部分,藉由一些复合词可发现变文中词汇复音节化的趋势,而有些特殊用法,如正反问句及动辅结构复合词,也都始于变文所属的时代。
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In chapter 1, the progress in study of the ruthenium complex oxides. especially the coexistance of magnetism and superconductivity in 〓 and 〓 are introduced. The introduction makes conclusion that all of the Ru-1212 and Ru-1222 compounds reported are accompanied by small amounts of SrRuO〓 impurities, this is to say that, it is difficult to synthesize pure samples of these two compounds by traditional solid state reaction. So the author think that the studies for new synthesis methods of ruthenate superconductors which is beneficial to the synthesis of new type precious metals superconductivity is very important till now.
第一章重点综述了钌系复合氧化物的研究进展,特别是其中超导电性的发现及其钌系1212、1222相铜氧化物超导电性和铁磁性共存的特征,在此基础上可以看出,至今文献报道所获得的Ru-1212和Ru-1222相化合物都含有少量的SrRuO〓杂相,即很难通过原有的固相反应方法得到纯相化合物,由此作者提出,现有钌系超导氧化物合成的新方法研究仍具有重要的现实意义,这也将更有利于探索合成新型贵金属超导体。
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The results showed that the MS2 fragmentation pathways of DASSSB were affected by the character and position of substitutes on salicylidene phenyl. The C=N cleaving to form fragmentation ion [M+H-283](superscript +) was dominant for DASSSB compounds with electron-donating group on the C4 of the salicylidene phenyl; while fragmentation ion [M+H-254] (superscript +) forming by C-C cleavage of the β-position of C=N was dominant for DASSSB compounds with electron-withdrawing group on the C5 of the salicylidene phenyl.
结果显示,这些化合物的ESI-MS/MS裂解方式与它们分子中水杨醛苯环上取代基的性质和位置有关:当水杨醛苯环上4位连接供电子取代基时,分子以CN双键断裂为主,生成[M+H-283]碎片离子;当水杨醛苯环上5位连接吸电子取代基时,分子以CN双键β位的C-C键发生断裂为主,生成[M+H-254]碎片离子。
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The result expressed that under the concentration of 0.2mg/mL, the 6 compounds are all active to Sarcina lutea, ME-1, MT-6, MT-land MT-7 are active to Bacillus megaterium, to Escherichia coli, only MT-2 is active. The dimeric natural products are intensively existed in botany, most of them have the obvious biological activities. They have been concentrated on in recent years, and they are one of the compounds to which are enjoyed great popularity in natural product.
结果表明,在浓度为0.2mg/mL的条件下,六种化合物对藤黄八叠球菌均具有明显抑制作用,ME-1、MT-6、MT-1、MT-7对巨大芽孢杆菌有抑制作用,MT-2对大肠杆菌有抑制作用,对绿脓杆菌和枯草芽孢杆菌六种成分均无抑制作用;二聚体化合物在植物界广泛存在,多数二聚体天然产物具有显著的生物活性,引起人们的重视,是天然产物化学界研究的热门化合物之一。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力