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This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.

论文的主要内容如下:1、简要介绍本论文工作的研究背景,并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物,利用紫外光谱和气相色谱确定了此类化合物较佳光照时间,测定了一个具有代表性光解产物的单晶结构,提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物,测定了两个具有代表性化合物的单晶结构。

The results showed that,in different typical fields,all kinds of weeds belong to 22 families,55 species mainly including Gramineae,Compositae,Cruciferae,Chenopodiacea,Caryophyllacea,Cyperaceae and so on.The distribution of weed clony in different fields has apparent differenciation.Relative abundance analysis indicates that a...

研究结果表明,调查样地出现的各种杂草种类共22科,55种,主要为禾本科、菊科、十字花科、藜科、石竹科和莎草科等;不同作物田块的杂草群落的分布存在显著差异;通过对相对多度的分析,开封郊区的杂草种类可主要分成两个聚类。

Two years old seedlings of Elaeagnus mooceroftii and Elaeagnus oxycarpa were chosen and planted in field, then treated by different mount of irrigation in Moyu county of Xinjiang. The relative mean soil water contents of different irrigating treatment were 85%, 70%, 47% and 24%.

在新疆和田墨玉县选取2年生大果沙枣和尖果沙枣实生苗,移植于苗圃对其进行不同灌水量的处理,不同处理的土壤含水量分别为田间持水量的85%、70%,47%和24%。

Through analyzing the research result of four series studies, we conclude that the description about toplogical perception that is prior to the perception of local featural properties does not fit to the visual perception, and the figure visual perception is not affected by the different geometrical levels, and the relative perceptual salience of different geometrical properities is not consistent with the hierarchy of geometries according to Kleins Erlangen Program.

四个系列研究的研究结果表明,陈霖的拓扑性质知觉理论对视觉系统具有早期抽取图形拓扑性质的描述欠妥当,图形视知觉的加工过程并不受图形几何变换功能层次的制约,不同几何性质的相对知觉显著性与克莱茵的埃尔朗根纲领所描述的几何层次不一致。

Secondly, using the SAS data description and exhibition tool the example analyzes the tendency of ET of different land utilization types and different month, as well as the influence of hydrometeorological factors such as rainfall, temperature, wind speed, relative humidity etc.

通过本实例证明数据挖掘技术可以快速、准确地发现数据之间的相关关系,建立反映客观规律的数学模型,为用水管理提供决策支持。

I have finished the ratio calculation of mw materials used to produce cementclinker, relative environmental impact importance assessment of emissions andenvironmental synthetic index under different conditions.the result means that we can selectthe optimal procession parameter and optimal procession ,considering environmentalactor ,mechanic erect kiln is the best one among the different kilns.the procession of closed-loop recyclable concrete is introduced in detail ,we found it is possible to make full use ofwasted concrete illimitedly by proper design ,though the recyclable concrete physicalfunction decreased a little comparing with virgin concrete, it's environmental property ismuch better than usual concrete.we also found that it is possible to use wasted concrete asthe coarse aggregate or fine aggregate.we probe the possiblity that fuzzy mathematics isused to judge whether a product is green product or not.

确定了不同窑型的最佳的工艺操作参数;比较了不同窑型的环境性能,得出结论:预分解窑是最佳的工艺选择。本软件具有专家系统的功能,本软件的最大特点是动态性和灵活性,这是为人为的因素,地方的因素变化性而设计的。允许输入不同的边界条件,即可得到不同的结果,这为水泥-混凝土的环境化设计提供了有力的帮助。本人也努力设计一个适用于水泥厂的数据库的框架,来实现水泥厂的在线评估。本文探讨了实现环境化设计的可再循环的混凝土的设计,得出结论:通过合理设计的混凝土的无限循环是可能的,虽然再循环的混凝土的性能与原混凝土相比有所下降,但其环境性能是普通混凝土无法比拟的,本文还探讨了废混凝土的利用的可能性及评估,废混凝土用作混凝土的粗集料是合适的,虽也可作细集料,但不值得提倡。

By designing different test rigs, choosing different friction materials and performing a large amount of tests, the property of friction with respect to the variation of normal loads, relative velocities and lubricational conditions is examined.

通过设计不同的测试装置,采用不同的摩擦材料,通过大量的实验,测试并分析了摩擦力随接触界面间正压力、相对速度、润滑状态变化的情况,研究了摩擦力在预滑动和宏观滑动阶段的静态及动态摩擦特性,发现并提出摩擦过冲概念。

The conclusions are as follows:(1) Neologisms in each Huayu region can be classified into two major categories:self-originated and others-originated,among which the new-born words are "absolute new words" and the inherited word are "relative new words",and there are also others-originated elements in the morphemic and sense systems of new words;(2) Variation can be seen in the morpheme,formation,building and sense of new words in Huayu regions,besides individuals of new words;(3) Aggregation of current new words and compound words with one common morpheme and a same construction,together with the aggregation of synonyms and that of different senses in polysemies,reflect the relevance of the systems of new words in Huayu regions in their variation;(4) Regular participation of hinting sense of a formation element in forming and building new words is an important way of producing new sense of morpheme,and an important reason for the current emergence of words with more than one new senses;(5) Compared with ordinary words,the productivity of ways of word formation in forming new words both in general and of a particular class will change and new ways of word formation appear in Huayu regions;(6) The semantic collocation of the verbal morpheme of new verbs in a phrase has a great influence on the location of its structural center,and the complex syntactic behaviors of new verbs are related to the different processes of argument integration;(7) The processes of building new words with the same meaning differ in levels of approaches to motivation cognition,perspectives of motivation cognition,morpheme motivation and morpheme expression,etc.;(8) The lexical interaction in Huayu regions results in lexical subsystem intersections of current new words across two,three and four regions.

本文的主要结论是:(1)各华语区新词均可分为&自源新词&和&他源新词&两大类,其中的新生词和传承词分属&绝对新词&和&相对新词&,新词语的词素、词义系统中也含有他源成分;(2)除词语个体外,华语区新词在词素、构词、造词、词义等方面均体现了某种程度的变异:(3)通用词语聚合、同素同构词聚合、同义异形词聚合与一词多义聚合集中反映了各华语区新词语系统在变异中的关联;(4)构词单位经常提示词义参与构造新词是产生新语素义的重要途径,也是当代多新义词现象的重要成因;(5)相对于一般词语,构词方式在新词语中的总能产性和在某一词类中所体现的能产性都有所变化,华语区也产生了新的构词方式;(6)新动词的动素在短语中的语义搭配对结构核心的位置有很大影响,新动词的复杂句法表现与不同的论元整合过程有关;(7)同义新词造词过程的差异包括理据认知途径、理据认知角度、词素理据和词素表达等不同层面;(8)华语区的词汇互动形成了双区、三区和四区通用新词等词汇子系统交集,作为华语核心,普通话所含纳的通用词语多于各区域变体。

The results showed that:1. Changes of Photosynthesis and Relative Physiological Characteristics of Photinia frasery Dress Seedlings under Different Drought in SpringAlong with the stress time extended and stress extent increased, leaf water content, photosynthetic pigment content and photosynthetic indexes of Photinia frasery Dress were inhibited in different levels, but the anthocyanin content, MDA content and membrane permeability increased distinctly.

结果表明: 1。不同程度干旱胁迫下红叶石楠叶片光合作用及相关生理特性的变化随着胁迫时间的延长和胁迫程度的加剧,红叶石楠的叶片含水量、光合色素含量以及Pn等光合基本指标都受到了更深程度的抑制,且可利用的光强范围越来越小,而花色素苷含量、MDA含量和细胞膜透性大幅增加,保护酶系统(SOD、POD、CAT)活性随着胁迫时间的延长,总体表现为先升高后降低,但在同一时期,随着胁迫程度的加剧,酶活的变化趋势有异。

The results show that the effects of humidity on AC flashover voltages are remarkably different in different relative humidity ranges as a result of the differences of the predischarge type.

本文根据电场分布的计算结果及预放电类型随相对湿度的变化规律,分析了不同湿度区间内湿度对工频闪络电压的影响。

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In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。