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The curing procedure of bisphenol A cyanate ester resin modified by copolymerization with epoxy E-51 and alicyclic epoxy resin R-122 was studied by differential scanning calorimetry.

采用示差扫描量热法对缩水甘油醚类环氧树脂(E-51)与脂环族环氧树脂(R-122)共同改性的双酚A型氰酸酯树脂的固化反应历程进行了研究。

Novel chitosan derivative with long alky groups as the hydrophobic moieties and carboxymethyl groups as the hydrophilic moieties was synthesized. The chemical structure of N-octyl-O, N-carboxymethyl chitosan was characterized via FTIR, 1H NMR and elemental analysis. The physical properties were analyzed with wide angle X-ray diffraction and differential scanning calorimetry.

以天然可生物降解的壳聚糖为原料,通过在壳聚糖6位羟基上引入羧甲基,在2位氨基上引入疏水烷基链,制得N-辛基-O,N-羧甲基壳聚糖两亲性衍生物,分别用FTIR、1H NMR和元素分析等技术对其结构进行表征,用广角X射线衍射和差示扫描量热法对具物理性质进行分析,并考察其在各种溶剂中的溶解性能及其对难溶性药物的增溶能力。

With results of scanning electron microscope analysis, aloin can directly act on the cell wall of bacteria and damage their outer structure and change their configuration.

利用扫描电镜研究了芦荟苷对菌体的作用,它的作用是直接作用于菌体细胞,破坏菌体形态和结构。

The field of alternative stress was generated through a strong sound field system set up in our lab, and the thermodynamic properties of cells were studied by Differential Scanning Calorimeter. We found that the effects of stress on cells depended greatly on the intensity and frequency of stress.

研究了交变应力对烟草愈伤组织细胞的影响,采用本实验室研制的强声波发生装置来产生交变应力场,并利用差式扫描量热仪研究了不同强度和频率的交变应力作用后烟草细胞热力学相行为的变化。

Range image process algorithms were investigated in the paper, which can be used to extract some features from airborne laser scanning altimetry data based on range data or intensity data of laser.

本文提出并研究了基于机载激光扫描测高数据提取建筑物的理论和方法,提出了基于分类分割后的原始激光脚点数据的提取规则房屋的方法。

It also shows the method and feasibility to derive forest parameters, such as tree height, and the crown length of individual trees from airborne laser scanning altimetry data in this dissertation.

本文详细研究了距离图像的处理方法,讨论了各种边缘提取算子在处理距离图像中的应用,并对距离图像进行中值滤波和增强处理,取得了较为满意的效果。

ResultsAmong 8 cases,there were low or low slightly density as in 7 cases, single high slightly density tubercle as in 1 case, following these,there were multiple neoplasm metastasis of brain other sites in 2 cases, annular shape enhancement in 3 cases after contrast CT scanning, peripheral edema lightly as in 6 cases and no in 2 cases, suprasellar region, ambiens cisterna and corpora quadrigemina were compressed, transposited and distorted differentlly,and obturated or widened locally.

结果7例脑干转移瘤呈低或略低密度影,1例单一结节为略高密度影,伴随脑内其他部位多发转移2例,3例增强扫描呈环形强化,较度水肿6例,无水肿2例,环池有不同程度受压移位、变形,以及局限性闭塞或增宽。

Analytical results of differential scanning calorimetry DSC and X-ray diffraction XRD indicated that after compression molding,the melt temperature of PLLA crystals decreased while the degree of crystallinity increased.

差示扫描量热DSC分析和X-射线衍射XRD分析表明PLLA模压成棒后,PLLA的结晶熔点下降,微晶尺寸变小,而结晶度增大。

Were observed under scanning electron microscope. Also the microspore developmental sequence of different whorls of stamens in the same androecium was examined under the light microscope.

Payer[1]首次报道了在一些类群中,雄蕊群的发育并非都是向心或向顶的发育顺序,而是离心发育的。

Acousto-optic scanning laser Doppler anemometry , in which the acousto-optic deflectors are used to controll the position of the LDA measurement volume, is a newly developed technique for measuring the spatial distributions and temporal properties of flow field.

通过对空间速度梯度和空间速度分布测量技术的分析与比较,作者认为使LDA测量点位置移动的激光扫描测速技术是诊断空间速度分布的好办法,并针对机。。。

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

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