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热解稳定性
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  thermodynamics stability
     Study of harmine microspheres for hepatic arterial embolization on thermodynamics stability
     去氢骆驼蓬碱肝动脉栓塞微球热解稳定性研究
短句来源
  “热解稳定性”译为未确定词的双语例句
     Study on the Content of Hydrochloric Harmine and Heat Stability of Harmine Gelatin Microspheres
     去氢骆驼蓬碱明胶微球药物含量及热解稳定性研究
短句来源
     Activation energies determined by DTG (derivative thermogravimetry) were 182.8 and 133.4 kJ/mol, respectively, showing that the 1:8 COPPT is much more ' stable than pure AD in thermal degradation.
     用导数热重法(DTG)求得1:8共沉淀物与双炔失碳酯的热解动力学参数,其活化能分别为182.8和133.4 kJ/mol,1:8共沉淀物的热解稳定性明显大于原药。
短句来源
     Quantum chemical study of the pyrolysis stability of pyrrolic nitrogen and pyridinic nitrogen in coal
     煤中吡咯型和吡啶型氮热解稳定性研究
短句来源
     The micropowder property, stability to thermal decomposition, drug content and drug releasing pattern in vitro of lung targeting microspheres of ligustrazine hydrochloride were investigated.
     考察了盐酸川芎嗪肺靶向微球的微粉学性质、热解稳定性、载药量和体外释药模式。
短句来源
     The nitrogen conjoint with benzene ring had the much more temperature resistant stability than nitrogen conjoint with quinone structural group.
     苯环相连的氮比与苯酚基相连的氮具有更强的抗热解稳定性
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  相似匹配句对
     C kstability ;
     C k稳定性;
短句来源
     Thermal Stabilities and the Thermal Decomposition Kinetics of Aspirin Drug
     阿斯匹林的热稳定性及其热解动力学(英文)
短句来源
     Purpose: to study aspirin drugs′ thermal process and kinetics of thermal decomposition.
     目的 :研究了阿斯匹林的热稳定性热解动力学 .
短句来源
     PYROLYTIC-GAS CHROMATOGRAPHY
     热解-气相色谱法
短句来源
     W: stability factor;
     W——稳定性指数;
短句来源
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  thermodynamics stability
At these temperatures and certain thermal treatment durations, along with the formation of the graphite phase, the reverse transition from g-BN to w-BN occurs, a behavior indicative of a higher thermodynamics stability of the wurtzite phase.
      
The thermodynamics stability was also characterized by thermogravimetry.
      


The copreeipitate of anordrin (AD)—PVP was prepared by solvent method. The DSC (differential scanning calorimetry) revealed that AD did not have crystalline structure in copreeipitates of 1:7~1:9. X-ray diffraction spectrum of 1:8 coprecipitate (COPPT) showed no crystalline structure of AD. The dissolution rate of AD was about 38 times higher for 1:8 COPPT than pure AD. Activation energies determined by DTG (derivative thermogravimetry) were 182.8 and 133.4 kJ/mol, respectively, showing that the 1:8 COPPT is...

The copreeipitate of anordrin (AD)—PVP was prepared by solvent method. The DSC (differential scanning calorimetry) revealed that AD did not have crystalline structure in copreeipitates of 1:7~1:9. X-ray diffraction spectrum of 1:8 coprecipitate (COPPT) showed no crystalline structure of AD. The dissolution rate of AD was about 38 times higher for 1:8 COPPT than pure AD. Activation energies determined by DTG (derivative thermogravimetry) were 182.8 and 133.4 kJ/mol, respectively, showing that the 1:8 COPPT is much more ' stable than pure AD in thermal degradation. The experimental results showed that antiimplantation effect of the 1:8 COPPT was much better than that of AD tablets: the number of implantation sites of mice administrated 1:8 COPPT (Smg/kg) was 0.2 (P<0.01) and that of mice administrated AD tablets (10.6 mg/kg) was 0.9 (P<0.05); effective dose of 1:8 COPPT was less than half of that of AD tablets.

本文用差示扫描量热法(DSC)筛选确定双炔失碳酯与PVP按1:7~1:9比例以溶剂法制得共沉淀物,其中已不存在双炔失碳酯晶体。用X射线衍射法研究了1:8共沉淀物,证明无双炔失碳酯的晶体衍射峰。经溶出速率测定结果20 min的药物溶出度1:8共沉淀物比原药约大38倍。用导数热重法(DTG)求得1:8共沉淀物与双炔失碳酯的热解动力学参数,其活化能分别为182.8和133.4 kJ/mol,1:8共沉淀物的热解稳定性明显大于原药。小鼠抗着床试验结果表明空白对照组着床数为4.8,53抗孕片(剂量10.6 mg/kg)组为0.9(P<0.05),1:8共沉淀物(剂量5 mg/kg)组为0.2(P<0.01),即1:8共沉淀物抗着床的有效剂量小于53抗孕片的一半。

The micropowder property, stability to thermal decomposition, drug content and drug releasing pattern in vitro of lung targeting microspheres of ligustrazine hydrochloride were investigated. The microspheres looked like whitish spherical powder, and the arithmetic mean diameter of the microsphers was 12.65 μm, with the amount in the range from 5 to 24.9 μm being 87.5% of the total. The mean bulk density was 0.59 g/ml, and the angle of repose 68.63°. The critical relative humidity was 56%. The activation energy...

The micropowder property, stability to thermal decomposition, drug content and drug releasing pattern in vitro of lung targeting microspheres of ligustrazine hydrochloride were investigated. The microspheres looked like whitish spherical powder, and the arithmetic mean diameter of the microsphers was 12.65 μm, with the amount in the range from 5 to 24.9 μm being 87.5% of the total. The mean bulk density was 0.59 g/ml, and the angle of repose 68.63°. The critical relative humidity was 56%. The activation energy of thermal decomposition was 81.6 kJ/mol with the reaction order of one. The drug content in microspheres was detemined ultravioletspectrophotometrically to be 17.0%; the drug release in vitro could be described by first order kinetics. The diameter range of microspheres met the requirements of lung targeting preparations.

考察了盐酸川芎嗪肺靶向微球的微粉学性质、热解稳定性、载药量和体外释药模式。结果表明,微球为类白色圆球状粉末,平均算术粒径为12.65μm,5~24.9μm,粒径范围的微球数占总数的87.5%,平均堆密度为0.59g/ml,休止角为68.63°,临界相对湿度为56%,热解活化能为81.6kJ/mol,反应级数为1。用UV法测得微球载药量为17.0%,微球体外释药符合一级动力学规律。微球粒径符合肺靶向要求

IR analysis indicated that the C-O bonds of five ring structure in furfuralcohol resin were first broken and the oxygen escaped from the resin during the resin carbonized process, meanwhile the recomposition of the residual diolefine chain structure was taken place, and hexaatomic fused rings were build. Then, the graphite minicrystals were formed by dehydrogenation. The test results also indicated that the nitrogen stability of polyaniline resin during carbonized process was associated with the structure of...

IR analysis indicated that the C-O bonds of five ring structure in furfuralcohol resin were first broken and the oxygen escaped from the resin during the resin carbonized process, meanwhile the recomposition of the residual diolefine chain structure was taken place, and hexaatomic fused rings were build. Then, the graphite minicrystals were formed by dehydrogenation. The test results also indicated that the nitrogen stability of polyaniline resin during carbonized process was associated with the structure of the nitrogen interlinked group. The nitrogen conjoint with benzene ring had the much more temperature resistant stability than nitrogen conjoint with quinone structural group. The hydrogen of resin carbon derived from polyaniline resin could be divided into two types: one existed as C-H form; the another existed as N-H form. The hydrogen of the resin carbon was mostly existed as C-H from in benzene fused rings.

红外光谱测试结果表明糠醇树脂碳化过程中五员杂环上的碳氧键首先发生断裂 ,使氧脱出 ,而剩余的双烯链状结构再进行重排 ,形成六员稠环结构 ,并在此基础上发生脱氢反应生成石墨微晶。测试结果还表明聚苯胺树脂中的氮在碳化过程中的稳定性与其相连结的基团结构有密切关系。苯环相连的氮比与苯酚基相连的氮具有更强的抗热解稳定性。聚苯胺碳化产物中的氢主要分为两大类 :一类是以碳氢键的形式存在 ;另一类则是以氮氢键的形式存在。碳化产物中的氢主要是在苯的稠环结构上以碳氢键形式存在

 
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