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Qualitative analysis and forecasting methods are: experts predict, Delphi method, the subjective probability law.

定性分析预测方法主要有:专家预测法、德尔菲法、主观概率法等。

Firstly, it seeks the sources from which theories have been developed, by a summary of evolution or a road-map. Secondly, it explains the two basic forms taken by traditional theories on intra-industry trade, namely, horizontal intra-industry trade model and vertical intra-industry trade model. Both models take final products as trade objects and products of same industry are thus simultaneously exported and imported among developed nations and among developed nations and developing ones.Thirdly, it points out that the theory of vertical intra-industry trade has already been expanded in scope in the area of trade between developed countries and LDCs. It shows that the implication of vertical intra-industry trade has expanded to the importation and exportation of parts and components, intermediate products or processing products produced via various working procedures or different production links within the same industry, with MNCs as carriers. It gives the summary of the methods of measuring intra-industry trade and argues that the basic method adopted by this thesis is G-L Index. In addition, GHM and Input-output Analysis are introduced to demonstrate the expansion of vertical intra-industry trade.

首先,通过整理国际贸易理论的发展脉络,寻求产业内贸易的理论渊源;其次,阐述产业内贸易传统理论的两种基本形式,水平型产业内贸易与垂直型产业内贸易的理论模型,指出两者都以最终产品为贸易对象,实现了发达国家之间或发达国家与发展中国家之间的同一产业内产品的同时进口和出口;第三,结合全球化的特点和跨国公司在国际要素分工中的基础作用,指出发达国家与发展中国家之间的垂直型产业内贸易理论已经得到拓展,表明垂直型产业内贸易涵义已发展成为以跨国公司为载体的同一产业内不同生产工序或不同生产环节的零部件、中间产品或加工产品的进口和出口;最后,归纳了产业内贸易的计量方法,指出本文的产业内贸易基本计量方法是G-L指数(格鲁贝尔-洛伊德计量法),并在此基础上进一步说明与垂直型产业内贸易的拓展相关的计量方法包括:GHM计量法和Hummels投入-产出分析法。

UV-Vis and continuous variation plot method were used to study the complexation of γ-cyclodextrin with bromocresol green, and the stoichiometric ratio of the complexation was to be 1∶2. Thermodynamic analysis results show an inverse relationship between temperature and complexation constant, and the change of enthalpy, entropy and free energy of the complexation were -39.988 kJ/mol, 86.400 J/ and -14.245 kJ/mol, respectively, which indicating that hydrophobic effect was the main force to form the complexes.γ-Cyclodextrin and bromocresol green complexes were examined by nuclear magnetic resonance, infrared spectrum and molecular modeling analysis, and was may be the group included in γ-cyclodextrin.

采用紫外-可见分光光度法和等摩尔连续变化法研究了γ-环糊精与溴甲酚绿的包合作用,确定了包合物形成的化学计量比为1∶2;采用热力学方法分析了温度与包合常数之间的关系,计算了包合过程的焓变、熵变及自由能变化分别为-39.988 kJ/mol, 86.400 J/和-14.245 kJ/mol,这表明疏水作用力为主要驱动力;采用核磁共振、分子模拟和红外光谱法对包合物进行了研究,确定了包合物的形成,分析认为这可能是基团进入γ-环糊精腔内导致增色效应。

Then,the methods of associating degree and fuzzy clustering analysis were introduced to delaminate and class the factors.And the rough index system was optimized by effectiveness coefficient judgment and reliability coefficient judgment.In this way,the index system could be acquired.

该方法首先利用德尔菲法,提出影响综合评价的因素;在此基础上,引入贴近度和模糊聚类分析的方法,对影响因素进行分层和分类处理,利用效度判断法和稳定性系数判断法对得到的初步指标体系进行优化,最终得到评价指标体系。

The effects of ,, and temperature on the distribution ratio have been investigated. The composition of the extracted species is determined by the methods of slope ratio, continuous variation,extraction isotherm curves and their chemical analyses. The extraction is found to proceed according to the reaction:AuCl_4 ~-+DEOTA_(0)TAuCl3 .DEOTA_...

着重研究了盐酸浓度、氯离子浓度、氢离子浓度和温度诸因素对萃取的影响;对有机相中金的反萃行为也进行了初探;通过斜率法、等摩尔系列法、萃取等温线法确定了配合物的组成;推定了DEOTA在盐酸体系中萃取金的机理为配位取代反应;计算了萃取反应的表观平衡常数和配合物的稳定常数。

Synthesis of biodiesel by transesterification of rapeseed oil and methanol catalyzed by KOH/Al2O3 solid base was studied. The catalyst was prepared by isochoric impregnation. Effects of some factors on the transesterification were investigated systematically and reaction conditions were optimized. The optimum reaction conditions on KOH/Al2O3 catalyst were: mass ratio of KOH to Al2O3 20%; calcination temperature 400℃ for 5h; molar ratio of methanol to oil 12:1, the amount of catalyst 5wt%; reaction temperature 60℃ and reaction time 2h.

采用等体积浸渍法制备了KOH/Al2O3负载型固体碱催化剂,并将其用于菜籽油与甲醇酯交换法合成生物柴油的研究;分别考察了催化剂附载量、锻烧温度、醇油摩尔比、反应温度、反应时间等条件对生物柴油产率的影响;结果表明:用等体积浸渍法,在400℃煅烧5h,制得负载量为20%的KOH/Al2O3催化剂。

The results indicate the effect of light level, visual angle and eccentricity on detection rate and reaction time at mesopic region; shows series of spectral luminous efficacy drawn out from the experimental results since monochromatic stimulus was used; proves that the results from performance-based method are in essence compatible with those from bright-matching method, since both of them are in accordance

本论文实验和计算结果确定了背景亮度、视场角和偏心度对人眼探测率和反应时间的影响程度;根据视觉功能的基础和实验中选用单色光谱作为视觉目标所得到的数据推导出人眼在中间视觉状态下的系列的光谱光视效率函数;本文研究结果证实了基于视觉功能法和视亮度匹配法所获得的光谱光视效率函数在本质上的一致性,它们都能反映出随着亮度降低而产生的浦尔金耶偏移效应(Purkinje-shift),但本论文所采用的基于视觉功能法还能反映出人眼视觉信息处理中的颜色通道效应。

At sea, septentrional, by night the polestar, located at the point of intersection of the right line from beta to alpha in Ursa Maior produced and divided externally at omega and the hypotenuse of the rightangled triangle formed by the line alpha omega so produced and the line alpha delta of Ursa Maior.

609海上,朝着北方,夜间以北极星为标志。将大熊星座的&贝塔——阿尔法&这一直线延长至星座外的&奥墨伽&,北极星便位于&阿尔法——奥墨伽&这道外部区分线与大熊星座内的&阿尔法——德尔塔&这一直线所形成的直角三角形斜边的交点上。

The study was conducted at 25℃ to cryopreserve the Australia Boer goat blastocysts and compacted morulae by one or two-step straw (Experiment 1) and OPS methods (Experiment 2) with vitrification solutions (EFS30, ESF40, EDFS30 and EDFS40) or by slow freezing (Experiment 3) with cryopretectant (1.5 mol/L EG).

在25℃室温下,采用细管法和OPS法,以不同浓度的EFS、EDFS为玻璃化冷冻液,对澳洲波尔山羊致密桑椹胚和囊胚进行玻璃化冷冻保存。同时利用1.5mol/L EG为抗冻保护剂对胚胎进行常规法冷冻保存。

Based on the problem of higher Al2O3/SiO2 of Bayer red mud, the separation of Al and Si in red mud from Bayer process in digestion with NaOH sub-molten salt was investigated.

针对拜尔法赤泥铝/硅比偏高的问题,对NaOH亚熔盐法处理拜耳法赤泥过程中的Al,Si行为进行了研究。

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