物质的量
- 网络Amount of substance;mole;Mol
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当β萘酚、乙醇和四氯化锡的物质的量比为1:4:0.114,回流反应12h,醚收率达74.4%。
The influence factors of reaction were investigated . The yield of the ether could reach 74.4 % under amount of substance ratio of β - naphthol , ethyl alcohol and stannic chloride were 1:4:0.114 , reflux reacting for 12h .
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当没食子酸、正丁醇和硫酸氢钠的物质的量比为1:15:0.034,回流分水5h,酯收率达92.3%。
The yield of the ester could reach 92.3 % under amount of substance ratio of gallate acid , n butyl alcohol and sodium bisulfate were 1 ∶ 15 ∶ 0.034 , refluxing and water segregation for 5 h.
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当前,国际单位制(SI)以物质的量作为基本量,本文特对其概念进行讨论,并提出了与之配套的计算方法。
At present , the substantial amount is called the elementary quantity in SI system .
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探讨了不同含钨催化剂、相转移试剂、以及催化剂用量对反应的影响,考察了催化剂体系中N与W物质的量比与反应活性的关系。
Effects of catalysts , phase transfer catalysts , molar ratio of N to W , amount of catalyst were also discussed .
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研究了碳正离子结构和反应物质的量对反应的影响,通过元素分析,IR和1HNMR确证了化合物的结构。
The structure of these compounds were characterized by elemental analysis , IR and ~ 1H NMR .
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当Yb与Eu加入的物质的量浓度比为3:7时,光强达到最大值。
When the molar ratio of Yb to Eu was3:7 , luminescent intensity reached to the maximum .
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其运行参数包括锅炉运行床温、Ca与S物质的量比、脱硫剂的床料粒度与性质、锅炉的流化速度等。
These parameters included boiler 's work bed temperature , Ca / S , bed material granularity , fluidized velocity and so on .
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发现mT与这些化合物的气相色谱相对物质的量校正因子有很好的相关性。
It was found that mT is correlated well with the relative mole correction factor f M of gas chromatography for these compounds .
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以牛血清白蛋白(BSA)为载体,合成2种不同的物质的量的比值(约1∶13和1∶42)的磺胺甲基嘧啶抗原,并比较了两者的免疫原性;
Two kinds of the sulfamethyldiazine antigen were synthesised with the carrier protein of BSA or OA and their immunogenicity compared ;
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采用预聚体合成法,合成不同物质的量比的多异氰酸酯与蓖麻油预聚物,作为水性高分子-异氰酸酯胶粘剂(API)的交联剂。
By prepolymerization , different prepolymers of PAPI and caster oil ( CTO ) are synthesized and used as crosslinker for water based polymer isocyanate adhesive ( API ) .
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当KH-550与氧氯化锆的物质的量比不低于21时,涂膜PC板的透过率较高,表面较平整;
When the molar ratio of KH-550 to zirconium oxychloride is above 2 , the transparency and surface morphology are excellent .
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PET可以通过检测到血流量及人体利用氧气和葡萄糖这类的营养物质的量来探测人体器官和组织的功能状况。
PET technology determines how well organs and other tissue are functioning based on blood flow and the amount of nutrients , such as oxygen or glucose , that they are using .
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结论:PGE1与3种CDs在水溶液中均可自发形成1:1(物质的量的比例)可溶性包合物,从而增加了其溶解度。
Conclusion : The 1:1 molar ratio inclusion complex of PGE1 with each CD could be spontaneously formed under the experimental temperatures .
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以1,3-二氨基硫脲与含有不同取代基的水杨醛类(控制醛与氨的物质的量之比1∶2)发生反应时,直接合成了五种对称的双Schiff碱。
Five symmetrical bis-Schiff bases have been synthesized by the reaction of thiocarbohydrazide and substituted salicylaldehydes ( controlling their molar ratio 1:2 ) directly .
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结果表明,配合物中N,Pd的物质的量比、SiO2,CS质量比及溶剂对SiO2-CS-Pd催化性能有很大影响。
The results showed that N , Pd molar ratio , SiO2 , CS weight ratio and solvents had much influence on catalytic hydrogenation behaviors .
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采用DSC方法探讨了酚醛物质的量比(F/P)为1.3、1.5、1.8的酚醛树脂的固化反应过程。
Differential scanning calorimetry ( DSC ) was used to study the curing behavior of phenolic resins with different formaldehyde / phenol , e g. F / P was 1.3,1.5,1.8 respectively .
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借助XRD分析了钾铌物质的量比、反应温度和反应时间对晶相和粒度的影响;
With the benefit of XRD , the influences of the ratio of the amount of substance of potassium and niobium , reaction temperature and time on the crystal phase and granularity were analyzed .
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结果表明,中间体龙脑酰基二酯的最佳合成条件为:乙氧基镁丙二酸酯和D龙脑酰氯的物质的量配比为1∶14,反应时间为4h,反应温度为在乙醚溶液中回流;
Results show that the optimal esterifying conditions are the ratio of 1 ∶ 1.4 and the reaction time of 4 h under reflux .
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当Ti与CTAB的物质的量之比为3,陈化时间为12h,可以形成孔径为4.5nm的六角相中孔结构;
The hexagonal mesoporous structure was synthesized with pore size about 4.5 nm when the mole ratio of Ti to CTAB was about 3 and ageing time was 12 h.
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在十二水合硫酸铁铵存在下由异戊醇和苯甲酸合成苯甲酸异戊酯,实验确定了最佳反应条件:催化剂4g,反应时间3h,反应醇酸物质的量比为1∶2.5。
The amount of catalyst was 4 g. The reaction time was 3 h. And the proportion of mole of isoamylol and benzoic acid was 1 ∶ 2.5 .
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针对邻二甲苯的特点,开发成功选择性高、寿命长、氨与邻二甲苯的物质的量之比(A2)较小的新型V-Cr-Mo-O/SiO2催化剂。
A V-Cr-Mo-O / SiO 2 catalyst , which is characterized by high selectivity , long service life and small molar ratio of ammonia to o-xylene has been screened .
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讨论了温度、-NCO-与-OH的物质的量之比(R)、亲水基团含量、合成工艺分别对材料力学性能、耐水性、玻璃化转变温度(Tg)等的影响。
The paper discussed the influence of temperature , the ratio of - NCO versus - OH groups , the content of hydrophilic group , hydration technique on the mechanical property , water-resistance and Tg of the polymer .
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与液滴中荧光物质的量成正比,比例系数与液滴体积、SOR半径和SOR环线宽度有关,且在一定条件下是常数。
The coefficient here is decided by volume of the droplet , radius of the SOR , and the width of the ring section .
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通过扫描电子显微镜(SEM)和X射线衍射分析(XRD)研究了配料的Ca/P物质的量比和溶液的pH值对粉体显微结构和相组成的影响。
The effects of the initial calcium / phosphorus molar ratio and the pH of the solution on the microstructure and phase composition of the powders were studied by scanning electron microscopy ( SEM ) and X-ray diffractometry ( XRD ) .
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优化工艺条件:氯化亚铁与碳酸钡物质的量的比值为1.2,在微沸状态下搅拌反应3h。
The optimum process conditions are as follows : the ratio of n ( FeCl_2 ) / n ( BaCO_3 ) 1.2 , the stirring time 3 h under slight boiling state .
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利用透射电镜(TEM)、N2等温吸附、X射线衍射分析(XRD)等方法,研究了反应温度、Zr/表面活性剂的物质的量之比对合成产物结构及性能的影响。
The influences of reaction temperature and molar ratio of Zr / surfactants on the structures and properties of mesoporous zirconia were studied by adsorption-desorption isotherms of N2 , transmission electron micrographs ( TEM ) and X-ray diffraction ( XRD ) .
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当硅氧烷单体中D4和VD4物质的量之比大于10∶1时,该共聚物乳液聚合稳定性好。
When the mole ratio of D_4 and VD_4 in siloxane monomers is above 10 ∶ 1 , the emulsion copolymer is steadily polymerized .
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分析了高血脂症患者红细胞膜的脂质含量及红细胞膜的胆固醇与磷脂的物质的量比(nCH/nPL)。
The total lipid and the mole of amount of cholesterol to phospholipid ( nCH / nPL ) of the erythrocyte membrane with hyperlipemia were measured .
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当钾铌物质的量比为4∶1、反应温度为220℃、反应时间超过24h时,所得铌酸钾为正交晶相的微晶。
When the ratio of the amount of substance of potassium and niobium is 4 ∶ 1 , reaction temperature is 220 ℃ and the reaction time exceeds 24 h , the prepared potassium niobate is microlite with orthorhombic crystal phase .
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X射线衍射和元素分析发现,产物成分主要受过氧化氢和Fe2+的物质的量之比影响。TEM观察和统计结果表明,产物微观形貌主要受PEG浓度影响。
The results of XRD and elment analysis showed that the components of the products were mainly influenced by the molar ratio of H2O2 to Fe2 + . The TEM images and the size analysis results indicated that the morphology of the ferrofluids was obviously affected by PEG content .