相转变

The results showed that PPC was a thermotropic liquid crystal and displayed the cholesteric banded texture. The reaction conditions had the distinct effects on the propoxy content and liquid crystal property of PPC, with the reaction temperature and content of propionyl chloride increased, the degree of substitution of propoxy increased at the beginning, then trended to steady. The transition temperature and range of liquid crystalline phase were changed with the DS of propoxy, as the DS of propoxy increased, the melt point decreased, and the liquid crystalline phase transition temperature range of PPC get wider.

结果表明，产物PPC具有明显的热致液晶性能，且呈现出胆甾型液晶的彩色条纹织构；反应条件对产物丙酰基含量和液晶性能有显著影响，随反应温度提高和丙酰氯用量增加，产物丙酰基的取代度先增大，后趋于稳定；其相转变温度和温域随丙酰基取代度改变而相应变化，随丙酰基的取代度增大，产物的熔点降低，液晶温度范围变宽。

The results shown that temperature of pyrochlore to perovskite phase transformation for PZT film is 600℃ in Pt substrate and 650℃ in steel substrate.

结果表明：PZT薄膜从烧绿石相向钙钛矿相转变的温度在 Pt衬底上为 6 0 0°C，在不锈钢上为 6 50°C。

Completely different crystal structures and morphology were shown in the meltdrawn films of two kinds of tacticity of sPP. A continuous conformational transform from the 〓 into the of sPP was induced by further stretching. While the zigzag conformation can retransform back to helical 〓 one after annealing above 80℃, the mechanism of conformation transform has been introduced.

Petermann教授学科专业高分子化学与物理研究领域\研究方向学位级别博士学位授予单位中国科学院长春应用化学研究所学位授予日期2001 论文页码总数114页关键词聚丙烯聚丁烯共聚物聚α-烯烃馆藏号BSLW /2003 /O632 /3 用电子显微学、电子衍射、DSC和FTIR等技术对聚α-烯烃及其共聚物的晶体结构和相转变行为进行了系统地研究，包括间同立构聚丙烯、全同立构和间同立构聚丁烯-1（iPB-1，sPB-1）、以及丙烯-丁烯-1间同立构共聚物。

The nematic thermotropic liquid crystalline behaviour of ten kinds of PEAs obtained was studied by polarizing microscope , DSC and X-ray diffraction.

用热台偏光显微镜，DSC和X光衍射方法研究了热致液晶的相转变行为，确认了这十种聚酯酰胺均为向列型热致液晶。

The physical and chemical changes and phase transformation of xerogel powder during heat-treatment are examined by means of DTA, XRD. The morphology of wollastonite powder is also observed by TEM.

采用DTA、XRD等研究了CaO-SiO2之凝胶粉末在热处理过程中的物理、化学变化及晶相转变，并通过TEM观察了干凝胶粉末热处理产物的形貌。

Then we studied the double phase transition behavior of three-layer nanostructures with double thermoresponsive shells. Successive RAFT polymerization of NIPAM and 2-ethyl methacrylate or DMA and NIPAM were conducted using PS macroRAFT agent. The PS-b-PNIPAM-b-PDMA and PS-b-PDMA-b- PNIPAM triblock copolymers can self-assemble into PS-core micelles, which possess a three layer \'onion-like\' structure, with PDMA and PNIPAM blocks forming the inner layers or outer coronas.

另外我们还合成了含有PS、PNIPAM、PDMA三嵌段聚合物，也利用芘标记的方法可以得出：对于PS-b-PNIPAM-(来源：A29BC论文网www.abclunwen.com)b-PDMA胶束存在两个明显的相转变过程，第一个是内层的PNIPAM这一个很宽的温度(20-32℃)的塌缩过程，接着是32-50℃下的PNIPAM和PDMA的混合塌缩或聚集过程。

The experimental results show that the samples can be densified very quickly by SPS, and proper temperature and dwelling time are beneficial to phase transformation and grain growth.

实验结果表明， SPS可使试样迅速完成致密化过程，适当的烧结温度和保温时间可以促进相转变和晶粒发育。

The results indicate that phase transformation from disordered to ordered phase happened after vacuum annealing in situ. The face-centered tetragonal L10-FePt thin film was obtained.

结果表明，经过原位真空退火后，样品发生了无序－有序相转变，得到了面心四方结构的L10-FePt纳米薄膜。

Structural differences among the three gelators are only in the varied amount of methyl groups on the benzene ring.

从分子结构的差异、亲溶剂作用、分子几何构型、相转变热焓以及溶剂极性等方面研究了三种亚苄基山梨醇衍生物凝胶剂在有机溶剂中的自组装和凝胶化机理。

It is found that the effects of the latent heat are not negligible in the laser cladding process and their errors depend on the temperature range during phase transformation s and the size of melted material region.

计算结果表明，在激光涂敷过程的温度场分析中，潜热的影响不是总可以忽略的，其误差取决于材料在物相转变时交界面温差的範围及材料熔解体积的大小。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。