变酸了的

The results indicate that it is possible to identify and distinguish these siccative oils because the unsaturated acid had changed into azelaic due to oxidation and polymerization during the drying process to make the chromatogram of siccative oils have a typical peak of C9 compound and provide a finger marker of m/z 217, and the concentration ratio of palmitic acid to stearic acid remains constant with time to facilitate the differentiation of oils.

分析时采用了热裂解与甲基化同时进行的技术。分析结果显示，4种干性油的不饱和脂肪酸在成膜后的甲基化产物均为壬二酸二甲酯，离子质量与离子电荷量比值为217，是干性油的特征检测峰。4种油中不同含量的软脂酸和硬脂酸在干性油成膜前后的比值不变，为干性油的甄别提供了可能性。

Firstly, according to Curie principle, the symmetry of the order parameter is decided by using the symmetry of the crystal before and after phase transition.

在居里原理的基础上，以PZT晶体、钛酸锶晶体和反铁电的简立方晶格模型为例研究了反铁电相变的序参量。

A direct copolymerisation process was used to prepare lactic acid and glycolic acid copolymer.

采用直接法熔融缩聚制备了L 乳酸和乙醇酸共聚物PLGA ，并用锥板流变仪对PLGA的流变性能进行测试。

In order to enhance the compatibility of ABS/PP/CaCO3 composites, the effects of reactive blends of the composites were studied by using Haake rheometer. The effects of various assistant cross-linkingers, such as castor oil, triallyl isocyanurate, turpentine (JS-1) and glycol dimethacrylate, and the used amount of cross-linkinger-dicumyl peroxide on the torques of the melting composites were investigated.

为提高ABS/PP/CaCO3复合材料相容性，采用转矩流变仪观察了ABS/PP/CaCO3三元复合物反应性共混后的扭矩，考察了不同的助交联剂蓖麻油、异氰脲酸三烯丙酯、松香酯(JS-1)、二甲基丙烯酸乙二醇酯以及交联剂过氧化二异丙苯的用量对共混物的影响。

The stable or unstable state of the montmorillonite-water dispersion is mainly effected by the properties of montmorillonite, water, and stabilizers as well as their interactions, while the type, the structure, the properties and the concentration of the stabilizer play dominate roles. Based on the molecular designing clues, this research selected three sulfonated copolymers as the stabilizers, i.e. the sodium 2-acrylamido-2-methyl-1propane sulfonate /acrylamide /disodium itaconate terpolymer, the AMPS/AM/N-vinyl pyrrolidone terpolymer and the sodium styrenesulfonate /IA copolymer. The preparation and characterization of the sulfonated copolymers were discussed, the high-temperature stability of the montmorillonitewater dispersion was characterized with the rheology, the filtration, the particle size distribution, the electrostatic properties, and the adorption of the sulfonated copolymers onto montmorillonite particles. At the same time, a systematic mechanism of the hightemperature stabilization of the dispersion was presented.

本文构筑了分子设计的思路，选取AMPS(2-丙烯酰胺基-2-甲基丙磺酸钠)/AM/IA三元共聚物、AMPS/AM/NVP三元共聚物和SSA/IA二元共聚物等三种磺化共聚物作为蒙脱土-水分散体系的高温稳定剂，进行了磺化共聚物稳定剂的制备与表征；从流变学、滤失性能、粒度分布、电性质以及磺化共聚物在蒙脱土上的吸附作用等方面，对蒙脱土-水分散体系的高温稳定性进行了研究，考察了蒙脱土-水分散体系的高温稳定性能，同时提出了高温稳定机理。

Iron-doped lithium niobate crystal: in front of t he study, we have studied the influence of t he

经研究了磁场对光折变二波耦合的影响，发现通过外加磁场能够有效地改变掺铁铌酸锂中写

The results showed that 22.5μL/L of clove leaf oil had the best preservation effect on peach. After 35 days of stock, the sound fruit rate was 94%, 46.9% higher than compared group. The rotten index and the browning index were 94.1% and 85.2% lower than the control, respectivly, and the treatment could remarkablely reduce the respiration rate and ethylene release, and postponed ethylene release peak and respiration peak 5 and 10d, respectively in comparison with CK, it also delayed the drop of firmness and contents of titrable acids of the peach. When stored for 35d, firmness of control group and 22.5μL/L of clove leaf oil were decreased 60% and 34% compared with initial storage, and the activities of SOD, CAT and POD were enhanced, but the contents of SSC had no obvious difference with control.

结果表明，与对照相比，22.5μL/L丁香叶油处理对桃果实的防腐保鲜效果最好，贮藏35d时好果率为94%，比对照提高了46.9%，腐烂指数和褐变指数分别比对照低94.1%和85.2%；丁香叶油处理可以有效降低桃果实的呼吸强度和乙烯释放量，呼吸强度高峰和乙烯释放量高峰分别推迟5和10d，延缓了果实硬度和可滴定酸含量下降的速度；贮藏35d时对照和22.5μL/L丁香叶油处理果实硬度分别比贮藏初期降低了60%和34%；丁香叶油处理提高了超氧化物歧化酶、过氧化氢酶、过氧化物酶3种膜脂过氧化物酶的活性，但可溶性固形物含量与对照相比无明显差异。

We obtain the "misfit strain-misfit strain" phase diagram and energy diagram for BST thin film grown on tetragonal base at room temperature.

用朗道－德文希尔理论研究了非平衡双轴失配应变对单畴外延钛酸锶钡薄膜相变的影响，得到了室温下生长在四方基底上的BST50/50薄膜的&失配应变－失配应变&相图和能量图。

It is the tannic acid contained in oak that ages the brandy.

正是栎木里含的丹宁酸使白兰地变芳醇了。

Both browning AND protective coloration of the balsam pear juice were in some detail looked into ,then we ascertained zinc gluconate AND calcium hydroxide for color fixative and effectively kept balsam pear raw material proper green.

实验对苦瓜汁的褐变和护色稳定性等关键因素进行了较详细地研究和探讨，确定葡萄酸锌和氢氧化钙为护色剂，有效地保持了苦瓜原料特有的绿色。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。