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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。

X-ray diffraction, infrared spectrum, Mossbauer spectrum, and absorption spectrum have been used to study allanite in some rare-earth deposit in this paper.

本文采用晶体场谱、穆斯堡尔谱、红外光谱和X射线衍射等多种手段研究褐帘石的谱学特征。

Sure enough, Spirit's alpha particle X-ray spectrometer found Stapledon to be rich in silica, too.

不出所料，勇气号的α粒子 X 射线分光计发现" Stapledon "富含二氧化硅。

The company produces the processing equipment to be advanced, check-out facility excellent, has the numerical control lathe, the numerical control drilling machine, the machining center, the numerical control gear-hobbing machine, the gear shaper, the fine borer, the universal milling machines, each kind of grinder, the table planer, the booklet bender, the large-scale lathe, the mechanical slicer, high intermediate frequency quenching, the well type, the box-type hardening furnace, the tempering furnace, the automatic welding machine, the X-ray crack detection machine, the cloth, the Rockwell tester; Electric hoist test platform, sound-level meter, varnish film thickness gauge, altazimuth, level; The material analysis laboratory, the metallography analysis room and so on full had guaranteed strictly the vehicle, the mill, dig, rub, pull, the boring, to drill, the ramming, cutting, the angle iron, the chemical examination and the heat treatment and so on complete technical process.

公司生产加工设备先进，检测设备精良，拥有数控车床、数控钻床、加工中心、数控滚齿机、插齿机、精密镗床、万能铣床、各种磨床、龙门刨床、折弯机、大型车床、刨床、高中频淬火、井式、箱式淬火炉、回火炉、自动焊机、 X射线探伤机、布、洛氏硬度计；电动葫芦试验台、声级计、漆膜测厚仪、经纬仪、水准仪；材料分析化验室，金相分析室等充分严格保证了车、铣、刨、磨、拉、镗、钻、冲压、切割、弯板、化验及热处理等全部工艺流程。

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。

This paper introduces the mineralogical characteristics of the andalusite which include the physical and chemical conditions of the andalusite formation,crystalline structure,X-ray diffraction,chemical composition,chemical formula of crystal and infrared spectrum.

本文对该矿床红柱石的矿物学特征，包括红柱石形成的物理化学条件、晶体结构、X射线衍射、化学成分、晶体化学式及红外光谱特征等，进行了系统的研究分析。

This paper presents a simple physical model of change of mass density for calculating the diffraction intensity of multilayer, which is proved by the experiments of the small angle X-ray diffraction.

提出了这种膜系内密度变化的简单物理模型，通过理论衍射强度计算和小角X衍射实验证明这种模型是合理的。

The effect of cholesterol on the phospholipid bilayer structure and polymorphism of liposomes have been investigated by method of the small angle X-ray diffraction and by the technique of scanning tunneling microscope.

用小角X射线散射和扫描隧道显微镜技术分别研究了模拟生物膜脂质体的结构以及胆固醇对生物膜双层结构的影响。

The results of wide angle X-ray diffraction, differential scanning calorimeterand polarized light microscope showed that both the soft and hard segments couldcrystallize under a certain condition.

宽角X射线衍射、示差扫描量热仪和偏光显微镜的实验结果表明，在这两种体系中软硬链段在适当条件下均能结晶。

He thermal shrinking mechanism of high shrinking PP fiber and change of the super molecular structure in the shrinking process was studied by means of wide angle X ray diffraction and micropolariscope.

运用X－光衍射仪、偏光显微镜及其复合测试技术，对高收缩聚丙烯纤维热处理前后超分子结构变化和纤维热收缩机理进行了研究，结果表明：高收缩聚丙烯纤维必须具有大量高取向非晶区，少量结晶区，结晶度低，晶粒尺寸小，近晶型晶胞。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。