热化学的

Ginger's pungency mainly comes from chemicals such as gingerols ([6]-, [8]-, [10]-gingerol), shogals ([6]-, [8]-, [10]-shogaol). Of those, [6]-gingerol and [6]-shogaol are present in the largest amounts, and are the main active pharmacological ingredients in ginger as well. Gingerols, with the amount directly proportional to the age of the ginger, are thermally unstable, and at high temperatures change easily into shogaols.

姜辛辣味的化学成分主要是gingerols（[6]-， [8]-， [10]-gingerol）、shogals（[6]-， [8]-， [10]-shogaol）其中又以[6]- gingerol、[6]-shogaol的含量最多，也是姜的主要药理活性成分。gingerols具热不安定性，在高温下会变化成shogaols，因此，生姜富含[6]- gingerol，乾姜富含[6]-shogaol，且其量与生长年数成正比。

Hot corrosion behavior of Na2SO_4 coated B-1900 alloy was studied in air at 827 and 750℃.Corrosion kinetics of the coated alloy was gravimetrically measured,and contents of water soluble ions in the reaction products were chemically analyzed.X-ray diffraction and EMP techniques were employed to determine the components and morphology of the corrosion product scale.

用涂 Na_2SO_4盐膜法研究高温合金 B-1900在827℃和750℃于空气中的热腐蚀行为，测定其腐蚀动力学曲线，用 X -射线衍射和电子探针元素面扫描方法分析腐蚀产物的相组成和成份，还对其中的水溶性离子进行化学定量分析。

The rheological property of a bisphenol A cyanate resin was investigated by means of parallel plate method, it was modified by isothermal precure process. The effects of precure process on the chemical structure of resin were studied by IR, DSC and GPC methods.

本文采用平板法研究了一种双酚A型氰酸酯树脂的流变特性，通过恒温预固化的方法对其进行改性，并借助红外光谱、差示扫描量热法和凝胶渗透色谱法等手段分析了预固化对氰酸酯树脂化学结构的影响。

Due to the key challenge for complicated techniques and preparation, there were few reports about ternary systems. A series of polyimide/SiO_2-TiO_2 hybrid films with different contents of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor in situ with sol-gel method and both phases in situ. Chemical structure and micro-morphology of hybrid films were studied by means of IR, SEM and XRD.

本文以正硅酸乙酯和钛酸四丁酯为前驱体，采用原位溶胶-凝胶法和两相原位同步法制备了一系列不同含量的聚酰亚胺/SiO_2-TiO_2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性、电击穿场强和耐电晕性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method. Chemical structure, micro-morphology and thermal stability of hybrid films was studied by means of SEM, IR and XRD, TGA was also tested.

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺／SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

A series of polyimide/SiO2-TiO2 hybrid films with different contents and weight ratio of inorganic particle were fabricated using tetraethoxyl silicane and tetrabutyl titanate as precursor by situ method .

以正硅酸乙酯和钛酸四丁酯为前驱体，采用两相原位同步法制备一系列不同含量及重量比的聚酰亚胺/SiO2-TiO2杂化薄膜，利用红外光谱、扫描电镜和XRD观察了薄膜的化学结构和微观结构，并测试了薄膜的热稳定性。

Based on the characterizations such as SEM、EDS、TG-DTA、FTIR、DRS、XRD、XPS、Zeta potential and Particle size analysis, The effect of preparation conditions including washing and calcining temperature on the photocatalytic activity of N-doped photocatalysists was discussed through the photodegradation of styphnic acid (2,4,6-Trintroresorcinol).

对改性后的催化剂进行了SEM、EDS、TG-DTA、FTIR、DRS、XRD、XPS、Zeta电位测定及粒度测定等表征，研究改性催化剂的微观形貌、元素组成、化学结构、热稳定性、吸光范围、晶型、表面电荷以及在水中的粒径分布。

Adopting TLCS,TLC,HPLC to detect effective contents of ingredients which are produced in every stage of process of Andrographis Table's production.

采用TLCS，TLC，HPLC法对穿心莲片生产过程中的各阶段产物的有效成分含量进行监测，并观察热对其化学成分的影响。

Its method can also recover useful chemicals from the epoxy resin whereas, in the pyrolysis and fluidised bed methods, there is little or no such recovery and the matrix is generally burned as fuel to help drive the process.

同时，该方法还可以从经过热解和流化床分解后回收的环氧树脂中进一步提取出有用的化学物质。可以说目前很少或几乎没有类似的方法，环氧树脂基一般都采取燃烧处理方式。

The topics of multiphase flow are also essential for various engineering systems related to energy, chemical engineering processes and heat transfer.

多相的题目流动也对是必要的与有关能源，化学工程的各种各样工程系统处理和热传输

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。