量热

No entire nitrendipine crystals were observed visually in SEM photos. The results of X-ray diffraction and differential scanning calorimetry analysis indicated that the crystalline form of nitrendipine was highly dispersed in microspheres, so as amorphous state. The drug release rate of microspheres could be controlled with adjusting the ratio of solid dispersion carriers and retarding agents formulated. The agitation speed and temperature of the preparation process have distinct effect on micromeritic properties of microspheres. The release profiles of the microspheres were mainly affected by the stirring rate of paddle, the concentration of SDS and pH of dissolution medium. Cooling speed and time, however, have no evident influence on the drug release rate of the microspheres. The dissolution data showed that the mechanism of drug release from microsphers was mainly diffusion-controlled. The incorporation efficiencies of 3 batches sample were exceed 96. 8％, which implied that the current method was suitable for design sustained-release dosage form for poorly water-soluble drug.

在扫描电子显微镜下观察，在微球内外未发现尼群地平的完整结晶，X-射线粉末衍射和差示扫描量热试验结果也显示，尼群地平已经被高度分散在微球中；微球的释药速度可通过调整处方中固体分散体载体和阻滞剂的比例控制；制备温度和搅拌速度对微球的质量影响较大；溶出仪的搅拌速度，释放介质的浓度和pH对微球的释放有较大的影响；制备过程中的冷却速度和冷却时间对微球的释放行为影响不很明显；方程拟合的结果表明缓释微球的释药行为符合扩散机制；测定三批微球样品的包封率均在96.8％以上，表明该法适合于制备难溶性药物的缓释微球。

The crystal structure and molecular chain behavior of mechanically micronize d corn starch were studied by various methods,such as polarized microscope,X-ray diffraction,DSC method,GPC and LLS.

采用偏光显微镜，X-射线衍射仪，示差扫描量热仪、凝胶过滤色谱以及激光光散射分析技术等测试手段，表征和探讨了超音速气流粉碎微细化处理的玉米淀粉的晶体结构和分子链行为。

The non-isothermal crystallization kinetics of polyoxymethyleneand poly- oxymethylene/co-polyamideat different cooling rates were investigated uisng differential scanning calorimetry.

采用差示扫描量热法研究了聚甲醛和聚甲醛/盐聚酰胺二元共混体系在不同降温速率下的非等温结晶行为，并用 Jeziorny 法、Ozawa 法和莫志深法计算了聚甲醛及其共混物的非等温结晶动力学参数。

Petrographic examinations, XRD and differential scanning calorimetry analyses of concrete prisms and rock prisms tested were made.

此外，还用XRD、差示扫描量热仪和岩相对岩石柱和混凝土柱膨胀试验后的试体进行了分析。

In this paper, two different methods have been used to synthesize the LiInS2 polycrystalline materials.

本文采用两种方法合成了LiInS2多晶原料，对所获LiInS2多晶原料进行了X射线粉末衍射和差示扫描量热分析。

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。

The effects on the physicochemical properties of rice flour by soaking fermentation were studied by Dynamic Rheometry and DSC.

利用动态流变仪和差示扫描量热仪等手段探讨了浸泡发酵对米粉体系理化特性的影响。

Ringy amorphous alloy Fe36Co36B20Si4Nb4 is obtained by the method of copper mould suction casting. Wholly amorphous structure is proved by x-ray diffraction and differential scanning calorimeter. The parameters obtained from DSC proves that it has high glass forming ability.

采用铜模吸铸法，制备出管状非晶态合金Fe36Co36B20Si4Nb4.X-射线衍射分析与差示扫描量热曲线DSC分析表明，Fe36Co36B20Si4Nb4完全是非晶态，具有很强的玻璃形成能力，并确定了它的热力学参数。

The results showed that the blending system could form surface gel and internal spumescent char layer to achieve flame retardant properties.The flame retardant properties of flame resistant PA6 contenting TPMP/MA complex system were studied by LOI,UL-94 and cone calorimeter tests.The results showed that the LOI value of PA6/17%MA system was 27.2,and the LOI value of PA6/4%TPMP/13%MA system was 28.6.The UL-94 test was V-0 level.The flame retardant mechanism analysis indicated that the TPMP/MA complex system could form thick intumescent char layer to execute the flame retardant functions both in the condensation phase and the gas phase.

将阻燃剂TPMP、MA复配后添加到PA6中，通过采用LOI、垂直燃烧及锥型量热仪研究了体系的阻燃性能，PA6/17%MA体系的LOI值为27.2，PA6/4%TPMP/13%MA体系的LOI值达到了28.6；上述体系的垂直燃烧性均为V-0级，对阻燃机理的分析表明，TPMP与MA复配应用时，可形成膨胀的较厚炭层，在气相和凝固相共同发挥阻燃作用。

Test methods such as ATR, IR transmission method, Raman spectroscopy, DSC(Differential scanning calorimeter), X-ray diffraction are used to investigate the assemble structure of the modified silk materials. And its microstructure is observed by SEM. Stannic acid is used to characterize the microvoids in the silk fibers and the mechanical properties of modified silk fibers are also tested in the paper.

本文采用了透射和全反射两种红外光谱吸收法、激光拉曼光谱法、差示扫描量热法、X射线衍射法等测试手段研究了改性真丝纤维的聚集态结构，采用扫描电子显微镜法研究了改性真丝纤维的微观结构，采用锡酸处理法对丝纤维内部的微孔进行了表征，并对改性后真丝纤维的力学性能作了测试分析。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。