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XRD,X-ray EDS analysis,AFM and Fourier transform infrared spectroscopy were employed to characterize PbSe thin films. The results show that all of the films were heteromorphy and the growth temperature has effect to the diffract peaks of the films. The contents of PbSe thin films by PLD consisted with the targets,and realizing thin films deposited with same constitutes; the films had rather flatness surface and compact structure; the peak-to-tail roughness of PbSe thin films surfaces was less than 200nm;they had sensitivity to light of a specified wavelength and obvious absorption edge at 5μm corresponding to band-gap width of PbSe thin films;light of wavelength less than 5μm was strongly absorbed.

通过脉冲激光沉积法在Si(111)和SiO2玻璃基片上制备了PbSe薄膜。X射线衍射、X射线能谱、原子力显微镜、傅里叶变换红外光谱仪测试结果表明:所有制备的薄膜都为多晶薄膜,发现薄膜生长温度对薄膜衍射峰有一定影响;PLD法制备的薄膜的成分与靶材的基本一致,实现了同组分沉积;所有薄膜表面比较平滑,表面不平整度小于200nm,结构比较致密;PbSe薄膜对红外光具有敏感的响应特性;在波长为5μm处存在有明显的吸收边,此吸收边对应于直接带隙PbSe材料的禁带宽度;对应于波长小于5μm的红外光,PbSe薄膜存在有明显的强吸收。

Subsequently, for guaranteeing the independence of analyzed factors, the principal components analysis method was conducted to avoid the collinearity problem in the assessment of landslide susceptibility. The new scenario was carried out in the logisticl regression analysis method and produced a new landside susceptibiltiy map.

地质科学家的判别经验分析确定的评价要素存在相互重叠的共线性问题是不可避免的,为了保证评价要素的独立性,判别式的主成分多变量分析法被执行确定了新的评价要素;随后LR模型被再次执行绘制了新的滑坡危险等级地图。

On one hand, in his opinions on the politics of England and it's colonies, he often showed liberal thoughts, but, from the history of British liberalist point of view, he went against the principle of liberalism based by Locke...

2在法国革命问题上,他的思想表现出更多的保守主义成分,且这一思想直接导致了辉格党的分裂,却也砥砺了后来的保守党;这种保守主义思想应用于英国及其殖民地的政治事务也许是适当的,但若用来指导其他国家则是荒谬的,甚或是"反功的"。

Among them, the algorithm of Eigenface, the most widely-used method of linear map based on PCA, has become the mainstream criterion to test the performance of various FV systems.

目前,已经提出了许多特征提取的方法,其中基于主成分分析(PCA Principle Component Analysis)的Eigenface算法及其变形已经成为测试人脸识别系统性能的基准算法,该方法是模式识别判别分析中最常用的一种线性映射方法,是根据样本点在多维模式空间的位置分布,以样本点在空间中变化最大方向,即方差最大的方向,作为判别矢量来实现数据的特征提取与数据压缩的。

By integrating the multi-discipline methods of petroleum geochemistry, sedimentology, hydrogeology, petroleum geology and experimental geochemistry, the thesis has carried out experiments of microcline dissolution in solutions with organic acids, crude oil, brines with high total dissolved solids , and has dealt with Al distribution between the crude oil and the brines after the experiments.

综合利用油气地球化学、沉积学、水文地质学、石油地质学、实验地球化学多学科交叉方法,进行了长石在有机酸、原油、高矿化度卤水中的溶解实验,研究了溶解后元素Al在油水相中的分配;通过详细研究塔里木盆地塔中地区、和田河气田、库车坳陷和塔北隆起北部油气藏流体的化学、同位素组成,观察岩石薄片、测试流体包裹体成分和均一化温度、全岩和自生矿物同位素组成,并结合油气运移和成藏史的研究成果,分析了三地区流体的成因、流动,并探讨了烃类侵位对成岩作用的影响、微生物和热化学的硫酸盐还原作用。

The ICA is a kind of signal processing method based on high order statistic, it can recover the source signals from the linearly mixed signals, but it has disadvantages in processing non-linearity signals, and the KICA, which is based on nonlinear function space, can solve the problem effectively. Comparing with current ICA algorithms, the KICA is notable for its flexibility and robustness.

独立分量分析是近几年发展起来的基于信号高阶统计特性的分析方法,它是指从多个源信号的线性混合信号中分离出源信号的技术,但目前的算法在处理非线性变化的信号时还有一定的局限,而基于非线性函数空间的ICA方法-KICA,即核独立成分分析,可以解决这一问题。

More and more attention is focusing on the safty of drinking water suply. In this paper, firstly, chloramine formation and the characteristics and kinetics of monochloramine autodecomposition were studied. Secondly, considering the high concentration of ammonia and the complication of organic matters in Shanghai Huangpu River, formation characteristics and rules of disinfection byproducts were reviewed during the breakpoint chlorination process, and on the basis of grading and clssification of organisms, the control effects of chloramination on DBPs formation were studied. Finally, the formation rules of 2-monochlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol from phenol chlorination were investigated, and related influencing factors and kinetics were analysed.

饮用水的安全供给受到越来越多的重视,本文首先进行了氯胺形态以及一氯胺自降解特性及其动力学研究;然后结合上海黄浦江水源氨氮浓度高、有机物成分复杂的特点,研究折点加氯过程中消毒副产物的生成特性和规律,以及在将有机物分级和分类的基础上,研究氯胺消毒对不同类别有机物生成消毒副产物的控制效果;最后考察了氯化苯酚生成2-一氯酚(2-MCP)、2,4-二氯酚(2,4-DCP)及2,4,6-三氯酚(2,4,6-TCP)的规律,并进行了影响因素和动力学分析。

Non-polluting in Guangdong Province, the best ecological environment Dendrocalamus growth areas, the establishment of bamboo juice base, the use of Mr. Wang Zhenliang not damage the normal growth of bamboo, a bamboo extract multiple live bamboo juice's patented technology, and the State Department of Agriculture , Ministry of Forestry, the Ministry of Light Industry, the State Pharmaceutical Administration of experts of the scientific and technological achievements of bamboo juice for the preservation of the unique treatment and processing, not add any preservatives, spices, under the premise of artificial pigments to produce "live bamboo juice" beverages, fully retains the fragrance of bamboo juice taste and all active ingredients, creating a will "live bamboo juice" drink made from a new field.

在广东省无污染的、最佳生态环境下生长甜竹的地区、建立竹汁基地,运用王贞良先生不破坏竹正常生长、一棵竹可多次提取活体竹汁的专利技术,及国家农业部、林业部、轻工业部、国家医药总局专家鉴定的科技成果,对竹汁进行特有的保鲜处理和加工,在不添加任何防腐剂、香料、人工色素的前提下,制成&活体竹汁&饮料、完全保留了竹汁的清香口感和全部有效成分,开创了将&活体竹汁&制成饮料的新领域。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

中文摘要本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况,在前人的研究成果和研究方法的基础上,对过共晶Al-Si合金变质处理进行了较为系统的分析,研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

The current theory and application of Al-Si alloy mainly focus on the study of hypoeutectic and eutectic, therefore we systematically analyzed the modification process of hypereutectic Al-Si alloy based on the methods and results of predecessors. Several factors including the modification temperature, the content of modifier, the available holding time, the times of repeat melting , the casting temperature and the speed for cooling have been studied in order to understand its effects to the composition, function and performances of primary silicon and eutectic silicon.

本文针对目前Al-Si合金相关应用和理论的研究多集中于亚共晶和共晶合金的情况,在前人的研究成果和研究方法的基础上,对过共晶Al-Si合金变质处理进行了较为系统的分析,研究了变质剂的成分配比、变质温度、变质剂的加入量、变质后的静置时间、浇注温度及冷却速度等因素对过共晶铝硅合金中初晶硅和共晶硅的大小、形状、数量和分布的影响。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力