查询词典 X-ray diffraction

A new polymorph of 1,6,7,12,13,18-hexaazatrinaphthylene (1) was characterized by single-crystal X-ray diffraction analysis at low temperature (193 K).

采用低温X-射线单晶衍射技术测定了化合物1，6，7，12，13，18-六氮杂三萘撑的一种新晶型。

Ray tracing theory is used to obtain phase and universal polynomial function of grating, and the coefficient of the polynomial function is optimized by genetic algorithm. Several grating splitters with ratio 1:2×2, 1:3×3, 1:4×4 and diffraction efficiency 81.83%, 81.11% and 74.01% respectively are designed based on the method.

该方法根据光线追迹原理设计获得光栅相位和面形多项式函数通式，采用遗传算法优化面形多项式函数系数，分别设计了分束比为1：2×2、1：3×3、1：4×4的光栅分束器件；其衍射效率分别为81.83%、81.11%和74.01%；三个器件的光强均匀性分别达到0.02394、0.1838和0.1912，并用Matlab进行了仿真。

The experimental results show that the content of SiC in RBSC increases with carbon content while α-SiC is chosen as a filler. However, the residual carbon would appear in specimens when the carbon content exceeds 30% by weight. Using carbon felt, the reaction-formed SiC particles are small and uniform in size and distribution. However, when carbon felt is impregnated with phenol resin, the reaction-formed SiC is nonuniform in size and distribution. X-ray diffraction shows that the fabricated RBSC is composed of α-SiC,β-SiC, and free Si. The polytype of SiC is related to the reaction-heat during sintering.

结果表明：选用α-SiC+C粉的混合物作为生坯，SiC相的体积分数随生坯中wC的增加而增加，但过大的wC将使硅化后的试样出现残碳；选用碳毡作为生坯，反应烧结碳化硅的显微组织特点是C／Si反应生成的碳化硅颗粒均匀细小，并呈线状分布在游离硅中；浸渍过树脂的碳毡硅化处理后的显微组织特点是反应生成的碳化硅颗粒粗大且呈不均匀分布。X射线衍射结果也表明，反应烧结碳化硅陶瓷由游离Si、α-SiC、β-SiC组成，试样中不同晶型碳化硅的出现与C／Si反应的放热过程有关。

The Scanning electron microscopy is used to study the morphological features of porcelaneous layer s on surface of freshwater cultured pearls from Zhuji, Zhejiang Province, and the calcium carbonate polymorph of porcelaneous layer s is identified by X-ray powder diffraction.

采用扫描电子显微镜对中国浙江诸暨三角帆蚌养殖珍珠表面特别是无珍珠光泽的瓷质层的微形貌进行了研究，并采用X射线粉晶衍射对瓷质层进行了物相鉴定。

The effects of pourpoint depressants on the wax crystal s of Shengli crude oil are studied by using X-RAY diffraction, the polar microscope and micro-electrophoresis instruments.

取得以下主要结论：从原油中分离出的蜡晶为正交晶型的晶体，晶面距为0。

The physical properties of WO3 thin films were tested by scanning electron microscope X-ray diffraction and electron prober microanalysis measurements respectively.

采用扫描电子显微镜、X射线衍射、和电子探针显微分析技术测试了WO3薄膜的表面形貌、晶体结构和成分比例等。

The physical properties of WO3 thin films were tested by scanning electron microscope、X- ray diffraction and electron prober microanalysis measurements respectively.

采用分光光度计测试了WO3薄膜在原始态、着色态和退色态的透射光谱、透射率变化的时间响应。

Coke properties has been studied by high temperature SiC oven、infrared gas analyzer and X-ray diffraction. First set forward the relationship between UPC and coke reactivity, strength, fine coke and coke graphitization, and creatively find the graphitization degree of coke tends to 100% when temp. reaches to 1350℃ UPC is profitableness to coke properties;②The effect of UPC on liquid slag distribution and flow functions in experiment oven has been studied by mathematics simulation The effect of UPC on taking shape and dropping of high titanium-bearing B. F. slag has been studied by using high temp. oven simulation cohesive zone and dropping zone of blast furnace.

为了弄清楚这部分UPC对高炉冶炼钒钛磁铁矿过程的影响，①在实验室利用高温SiC炉、红外线气体分析仪、X—射线衍射仪等进行了一系列UPC对焦炭性能及石墨化度的影响研究，提出了UPC与焦炭反应性、抗压强度、粉化性能及焦炭石墨化度之间的关系，创造性的发现高炉内1350℃以上，焦炭的石墨化度已达100％，UPC对焦炭性能的影响有益而无一害；②采用数学模拟方式研究了UPC对实验炉内液态渣分布及流函数的影响，并利用高温熔滴炉模拟高炉软熔带、滴落带研究UPC对高钛渣滴落性能的影响，采用旋转式粘度计测定滴落渣性能并通过高倍矿相显微镜观察了滴落渣的矿物结构。

One of the two major products was characterized by single crystal X-ray diffraction.Here the rings configuration in the crystal structure is described clearly by semi-quantitative ring puckering analysis.

用硫酸亚铁引发青蒿素的自由基裂解反应，对主产物之一的3-羟基脱氧青蒿素进行了单晶培养和X射线的表征，运用环Puckering分析方法对结构中环的构象进行了半定量描述。

InNSb alloy films were prepared on GaAs (001) substrates by N2 radio frequency plasma-assisted molecular beam epitaxy, the N composition and micro-structures of the samples were characterized by atom force microscopy, scanning electron microscopy, X-ray diffraction and Raman spectroscopy.

本文利用射频氮等离子辅助分子束外延（RF-MBE技术在GaAs（001）衬底上生长稀氮InNSb半导体薄膜，并通过原子力显微镜、电子扫描显微镜、X射线衍射仪、拉曼散射光谱等测量手段对样品的微结构和氮组分等进行了表征。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。