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The studies of X-ray photoelectron spectroscopy and the oxidation of carbon nanotubes in air demonstrate that the tubes have good graphitic degree.

碳纳米管的X射线光电子能谱研究以及热重研究结果表明:这些碳纳米管具有好的石墨化程度。

The synthesized PCU was then characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, small-angle X-ray scattering, and tensile strength measurement. The IR showed that the polymer synthesized by the above two methods both have the polycarbonate-urethane structure and the tensile measurement showed good mechanical performance of the polymer. The DSC and TGA data showed that there is an obvious soft-hard glass transition area, which indicated the existence of the micro-phase separation structure. The extent of the phase separation was affected by the ratio of starting materials, the molecular weight of PCD, and the polymerization method. The decomposition upon heating was observed in two steps. SAXS result showed that the radius (r_2), the distance between domains (d_2), and gyral radius (R_2) of hard segment micro-domain were fairly affected by the starting materials ratio and soft segment content.

IR结果表明两种方法合成的聚合产物均具有聚碳酸酯聚氨酯的结构;拉伸实验表明聚合产物具有良好的力学性能;DSC、TG结果表明,聚合物呈现出较为明显的软硬段玻璃化转变区,表明存在微相分离的结构,相分离的程度受原料配比、软段分子量、聚合方法的影响,其热分解分为明显的两个阶段; SAXS结果表明,聚合物原料配比、软段含量的变化对硬段微区回旋半径R_2,微区间距d_2,微区半径r_2影响不大其值分别为9.5(A|°、29、7.4,但对软段的微区半径及间距影响较大,随着软段含量的增大,软段微区的半径r1和间距d1都增大。

Comparing to the gyroidal baking technology, the newly developed flow state baking technology has the advantages of lower heat cost, less investment, simpler equipments and higher automatic standard. So it is now developing quickly.

新近发展的流态化焙烧技术相比与原有的回转焙烧,具有热耗低、投资少、设备简单、自动化程度高等优点,故得到了大力的发展。

Objective To evaluate the clinical value of hemostatic scalpel in abdominal surgery.

目的 通过随机化对照研究,评价热凝切割刀应用于剖腹术的临床价值。

In this paper, using Liaoning\'s Ca-bentonite as matrices, modifying with sodium compound at first, organically modifying with Octadecyl/Hexadecyl ammonium chloride as the cover agent, based on hydrothermal process, and dispersing the modified bentonite into the dimethyl benzene-methyl alcohol system fully, we synthesized the high-grade organic bentonite gel with stable quality and excellent characteristics.

本文以辽宁钙基膨润土为原料,首先对其钠化提纯,然后以十八/十六烷基氯化铵为有机复合剂,采用水热合成技术对膨润土进行有机改性,将改性膨润土充分分散于二甲苯-甲醇体系中制备出产品质量稳定、性能国内领先的膨润土高档有机凝胶矿物材料。

In this paper, using Liaonings Ca-bentonite as matrices, modifying with sodium compound at first, organically modifying with Octadecyl/Hexadecyl ammonium chloride as the cover agent, based on hydrothermal process, and dispersing the modified bentonite into the dimethyl benzene-methyl alcohol system fully, we synthesized the high-grade organic bentonite gel with stable quality and excellent characteristics.

本文以辽宁钙基膨润土为原料,首先对其钠化提纯,然后以十八/十六烷基氯化铵为有机复合剂,采用水热合成技术对膨润土进行有机改性,将改性膨润土充分分散于二甲苯-甲醇体系中制备出产品质量稳定、性能国内领先的膨润土高档有机凝胶矿物材料。

The solid product was characterized by N2 adsorption-desorption, XRD, TEM and hydrothermal stability test. These results indicated that small amounts of HPMo in the synthesis media could reduce the amount of liquid in-organic acid and crystallization time greatly. And SBA-15 sieves prepared in this method exhibited an excellent hydrothermal stability, as its hexagonally ordered mesostructure was maintained after treated in 100 ℃ water over 72 h.

N2吸附-脱附、XRD、TEM和水热稳定性实验等检测结果表明:用这种方法不仅可以大幅度降低合成SBA-15分子筛所需液体酸的用量和缩短晶化时间,同时反应产物SBA-15在100 ℃的水中处理72 h后仍然保持六方有序的介孔结构。

Based on this monomer, several novel polyimides bearing side chain s composed of cyano-biphenyl mesogenic end groups and hexylene spacer were prepared.

合成了一种含氰基联苯氧基侧链的二元胺单体,然后通过两步法热酰亚胺化工艺制备了新型的含氰基联苯基团侧链的聚酰亚胺。

Based on this monomer, several novel polyimides bearing side chains composed of cyano-biphenyl mesogenic end groups and hexylene spacer were prepared.

合成了一种含氰基联苯氧基侧链的二元胺单体,然后通过两步法热醯亚胺化工艺制备了新型的含氟基联苯基团侧链的聚醯亚胺。

The results show that the microstructure of as-cast Ti-45Al-7Nb-0·15B-0·4W becomes fineafter being HIPped and heat treated, and a more perfect lamellar microstructure is got. The temperature ofαphase

结果发现: Ti-45Al-7Nb-0·15B-0·4W的铸态组织经过热等静压和均匀化处理后,其晶团尺寸减小,层片组织更为完整; Ti-45Al-7Nb-0·15B-0·4W合金的α相转变温度为(1 290±5)℃; Ti-45Al-7Nb-0·15B-0·4W合金在超过1 295℃的温度进行热处理时,其显微组织由近层片

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The objective is to subjugate and discourage the people, because that allows the elite to continue to rule unopposed.

其目的是压制和打击人民的积极性,因为这可以让实权派继续统治不会沦为反对派。

GOD,this is the second time you vanquished me!

天啊,这是第二次你打败了我!

So a kind of strong antagonism permeated in the relations of two countries.

所以两国这一时期的政治关系始终弥漫着一种强烈的对抗情绪。