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- Spectroscopic method of ultrafast process is discussed. 荧光光谱法;
- McGraw-Hill Williams Spectroscopic Methods in Organic Chemistry 5th ed. 有机化学中的光谱方法第5版。
- The diffraction method is appreciably lower than that of the spectroscopic method. 衍射法的精确度显然低于光谱法的精确度。
- Spectroscopic methods including UV-dichroism and FT-IR were used to study the p... 用紫外二色性和付里埃红外等光谱方法,对其光致取向行为进行了研究。
- Emphasis on reaction mechanisms, synthesis, stereochemistry, as well as chemical and spectroscopic methods of analysis. 课程重点在反应机构、合成、立体化学、化学分析及仪器分析方法。
- Objective: To study Chemical composition of urinary stones using the infrared spectroscopic method. 目的:使用红外光谱方法对尿路结石成分进行定性定量分析。
- Method: The compounds were extracted with solvents, isolated by various column chromatography and identified by spectroscopic methods. 方法:溶剂提取及各种柱色谱法分离,光谱技术鉴定结构。
- Methods The compounds were separated and purified by column chromatography and their structures were established by spectroscopic methods. 方法利用各种色谱法进行分离,根据理化性质和波谱数据鉴定结构。
- In this thesis, interaction of indolizine-naphthoquinone compounds (INQ) with calf thymus DNA(CT-DNA) was investigated using the electrochemical and spectroscopic methods. 本文用电化学及光谱方法研究了中氮茚萘醌化合物(INQ)与小牛胸腺DNA(CT-DNA)的相互作用。
- An indirect atomic absorption spectroscopic method (AAS) was proposed for the determination of leucogen in pharmaceutical preparations. 该法可成功地用于药物制剂中利血生的测定。
- In the paper, hypoglycemic activity-guided fractionation led to the isolation compound from swertia japonice and their identification was based on spectroscopic methods. 本文报道了从青叶胆植物中提取的具有降血糖活性成分的化合物,并用光谱方法对其结构进行了鉴定。
- A new ent-kauranoid named laxiflorin D (1) was isolated from the leaves of Isodon eriocalyx var. laxiflora, whose structure was determined by the spectroscopic methods. 从疏花毛萼香茶菜(Isodon eriocalyx var.;laxiflora)叶中分离得到一新的对映-贝壳杉烷型二萜,命名为疏花丁素(1),通过波谱方法鉴定了它的结构。
- The conformational changes of aminoacylase during titration by solution of SDS were studied by fluoresence and utraviolet difference spectroscopic methods. 本文以荧光发射光谱和紫外差吸收光谱的方法,研究了SDS滴定氨基酰化酶溶液时构象变化的情况,同时测定了相应的物的活力的变化。
- The methods for determination of adulterated vegetable oil were introduced, such as conventional physical and chemical method, spectroscopic method, chromatography, calculate chemical method. 摘要介绍了常规理化检测法、光谱法、色谱法、计量化学法等检验植物油掺伪的方法。
- Four terpenoid compounds were isolated from the roots of Peucedanum rubricaule for the first time. On the basis of spectroscopic methods and X-ray analysis,they were determined as sinodielides A(1),B(2),asiatic acid(3) and ursolic acid(4). 从云前胡(Peucedanum rubricauleSheh et Shan)的乙醇提取物中首次分离并鉴定了4个萜类化合物,分别为sinodielides A(1)、B(2),积雪草酸(asiatic acid,3)和乌苏酸(ursolic acid,4)。
- These compounds were identified as succinic acid (1) , nystose (2) , IF-fructofura-nosylnystose (3) ,inulin-type hexasaccharide (4 ) and heptasaccharide (5) by chemical and spectroscopic methods. 经化学及波谱学方法,分别鉴定为琥珀酸、耐斯糖、IF-果呋喃糖基耐斯糖以及菊淀粉型六聚糖和七聚糖。
- A pair of disaster eoisomeric saponins with nine sugar moieties were isolated form the stem barks of Albizia julibrissin.Their were identified based on chemical and spectroscopic methods. 摘要从合欢皮95%25乙醇提取物中用溶剂和色谱法分离得到一对非对映异构体九糖皂苷(1,2),经化学与光谱方法鉴定其结构。
- METHODS Chromatographic and spectroscopic methods were used to isolate and identify the related substance in isepamicin, and antibacterial activity of two related substances was studied. 方法运用色谱学和波谱学方法分离和鉴定硫酸异帕米星中的有关物质,并做体外抗菌试验。
- The detection limit of this method is 0.09 ppb, recovery is 91.4-108.0%. The results of the determination of some natural water samples by this method were in accordance with that from the graphite furnace atomic absorption spectroscopic method. 本法的检测限达0.;09ppb;水样测试的精密度良好;回收率91
- The Secondary structure of earthworm Calmodulin(CaM) in thin film was measured by using FT IR spectroscopic method and curve fitting technique, and the effects of Ca 2+ and Tb 3+ were investigated in detail. 运用FT-IR方法的分辨率增强及曲线拟合技术对水化膜中蚯蚓钙调素CaM的二级结构以及加入不同比例Ca2+、Tb3+后CaM二级结构的变化进行了研究。