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A new theoretical model, the 2CLJDQP potential function, was developed for linear molecules, which takes into account dipole, quadrupole and induction effects as well as the rotation of the dipole out of the molecular axis. The energy parameters were optimized for various types of fluids. With the modified mixing rules, the potential parameters obtained from homonuclear molecules can be used to calculate the second virial coefficients of heteronuclear molecules. The model was also successfully extended to triatomic molecules. Analysis of the contributions to the second virial coefficients of long-range interactions shows that the molecular interactions introduced in the present model, such as, the induction effects, cannot be neglected.
建立了全新的线型分子2CLJDQP势能模型,考虑了偶极作用、四极作用及诱导作用的影响,还考虑了极轴与分子轴不平行的情况;回归了多种线型分子的势能参数;通过改进混合规则,可应用同核线型分子的势能参数直接计算异核线型分子的第二维里系数;扩展该模型可用于线型三原子分子计算;讨论了各长程引力项对第二维里系数的贡献,结果表明本模型引入诱导作用等是十分必要的。
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We have developed a simple and easy-handling procedure for copper-catalyzed cyanation of aryl halides using K4[Fe_6] as the cyanide source. The present procedure has ligand- and base-free advantages, and was accomplished under the conditions of exposure to the air without degassing of the solvent.4. We carried out the selective control of preparation for phenyl ether and phenol from iodobenzene with 10 mol% of Cu_2·H_2O as the catalyst under the condition of exposure to air.
这个程序有无配体无碱的好处,并能够在暴露于空气的条件下进行,溶剂也不用脱气。4、空气气氛下,用10 mol%的Cu_2·H_2O催化碘苯偶联,实现了制备二苯醚和苯酚的选择性控制:即在有(来源:Aa955BC55论文网www.abclunwen.com)机溶剂NMP中实现了碘苯直接制备二苯醚的Ullmann反应,在H2O中实现了碘苯直接制备苯酚。
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The results of the present research are as follows, The correlation between physico-chemical properties of organic compounds and their competitive power was studied, and it was indicated that organic compounds preferable to form H-bonding with organic matter of sorbents have stronger competitive power; Sorption behaviors of ionizable organic compounds in different species and their competitive power were examined, and the results showed that phenols and carbonxylic acids with benzyl circle have much stronger competitive power in molecular species than in ionized species, because negative charges of anionic forms can depressed their adsorption on the surface of the sediment; in contrast, organic bases such as aniline and p-chloroaniline show weaker competitive power in molecular species than in ionized species, and this is because both species of the organic bases could adsorb strongly onto the sediment; there is a correlation between competitive power of organic pollutants in multi-solute systems and their sorption isotherm nonlinearity in single-solute systems, and organic compounds whose sorption isotherms is linear in single-solute systems hardly have competitive power in multi-solute systems; Competitive sorption effects in more than two-solutes systems was studied, and it was exhibited that mixture of two cosolutes each of which could suppress sorption of nominal solute onto the sediment had synergistically competitive sorption effect on the nominal solute; A method about incorporating sorption/desorption of organic pollutants into river water quality model was developed, and discussion about degree of sorption/desorption effect on model prediction for different organic compounds was made, which will provide theoretical basis and practical processes for setting up more accurate water quality model.
论文主要取得了以下研究成果。(1)有机化合物的吸附竞争能力与其物化性质具有相关性,易与沉积物有机质形成氢键的化合物其竞争能力也比较强;(2)可离子化有机化合物的吸附竞争能力与其存在形态有关。酚类、含苯环的羧酸类化合物,其离子态的吸附竞争能力远小于分子态,其机理为有机酸阴离子所带的负电荷抑制了表面吸附能力,主要发生分配作用;而苯胺类化合物,其离子态和分子态都表现出显著的竞争能力,而且离子态的竞争能力略强于分子态,原因在于有机碱阳离子所带的正电荷促进了其表面吸附能力;有机化合物竞争能力的强弱与其单组分吸附等温线的非线性程度具有一定的相关性,吸附等温线近似为线性的化合物没有或只具有微弱的竞争能力;(3)对目标有机化合物的吸附具有竞争效应的有机化合物混合后,将对目标有机化合物的吸附产生协同竞争效应;(4)以京杭运河为例,率先提出了将有机污染物的吸附/脱附作用及水文水力参数耦合到水质模型中的方法,并讨论了吸附/脱附作用对不同有机污染物预测模型的影响,为建立更准确的水质模型及进行更客观的风险和生态评估提供了参考依据。
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This section will present the opinions and measures to enhance the recognition of strengthening the political ideology education in the employment guidance for the college graduates,to further plentify its content,to continuously reinforce the creation and innovation of the educational method and to further optimize the environment for the education .
通过对毕业生就业指导中思想政治教育现状的研究,本部分提出了提高对加强高校毕业生思想政治教育的认识,进一步充实高校毕业生思想政治教育的内容,不断加强高校毕业生思想教育方法的创新,进一步优化高校毕业生思想政治教育的环境的现点和措施。
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Hangzhou Tianma Textile Machinery Co., Ltd. is the earliest in the non-woven fabrics for professional research and Production business, products related to the scope of the various professional rapier spinning Poncirus the field of production, from the beginning of the GA731 radius of the rapier-based development to the present HGA732 series looms, not only to meet High-end textile fabric weaving, and particularly good at some special professional-woven fabric, such as: a common standard loom, the production of silk yarn and high-precision electronic fabric of electronic coiling off high-end electronic Dobby looms, production All kinds of terry cloth towel loom, wide loom (Reed said the biggest increase was 4.6 meters), all kinds of industries with a cloth loom, Shaluo fabric looms, the Zhuang Shibu electronic Jacquard loom, the production of different warp The double-shaft looms, but also provide root Zelkowa acuminata special requirements of large package of cloth, Vol device as a whole and not for the cheese-and absorbed by the device.
杭州天马纺织机械有限公司是国内最早从事无梭织机专业研究与生产的企业,产品范围涉及到剑杆织机的各种专业纺枳品生产领域,从最开始的GA731桡性剑杆织机为基础发展到现在的HGA732系列织机,不但能满足高档纺织面料织造,并且特别擅长于一些特殊专业织物的制织,如:通用的标准型织机、生产真丝与高支纱等精细织物的电子卷取电子送经电子多臂高档织机、生产各种毛圈织物的毛巾织机、宽幅织机(最大公称筘幅为4.6米)、各种产业用布织机、纱罗织物织机、电子大提花的装饰布织机、生产不同经纱的双层经轴织机等,还可根椐特殊要求提供大卷装的机外卷布装置和用于不整经的筒子经架与匀经装置。
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Firstly, the basic concept of software/hardware co-design and the present research situation worldwide is introduced, the techniques are also discussed separately in the thesis, which is in the system description stage, system architecture design stage, hardware/software design and implementation stage. Secondly, combined with three representative methods of hardware/software co-design systems: POLIS、VULCAN and CORSAIR, the main steps of co-design are studied and analyzed including system description, hardware/software partitioning and hardware/software implementation-synthesis, and some new ideas are given here. Thirdly, UML and modeling technology of embedded systems using UML are described clearly, a handheld terminals is a good example for this, furthermore, the algorithm of how to convert the UML diagram into SystemC codes is mainly concerned on in this thesis. Fourthly, the basic concept of SystemC is described, and the SystemC Modeling platform and simulation mechanism are analyzed, software/hardware co-design methods using SystemC are discussed. Finally, by applying co-design ideas using UML and SystemC, software/hardware co-design system using UML and SystemC is preparatorily implemented, which is to establish a development environment for designing embedded system.
本文首先介绍了软硬件协同设计的基本概念和国内外研究现状,并分别论述了系统描述阶段的技术、系统结构设计阶段的技术、软硬件设计与实现阶段的技术;接着结合POLIS、VULCAN和CORSAIR 三种有代表性的软硬件协同设计方法,对系统描述、软硬件划分、软硬件实现综合等几个主要设计步骤进行了研究与分析,并提出了新的方法和思路;然后详细介绍了UML及基于UML的嵌入式系统建模技术,并以嵌入式手持终端系统来举例说明,重点研究将UML的视图转换成SystemC代码的算法;其次介绍了SystemC的基本概念,分析了SystemC 的建模平台和仿真机制,并对基于SystemC 的软硬件协同设计方法进行探讨;最后应用基于UML和SystemC的软硬件协同设计的设计思路,初步实现基于UML和SystemC的软硬件协同设计的设计系统,目的是建立一个用于嵌入式系统设计的开发环境。
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As for bishops, we urge and appeal by the tender mercy of our God that, while attending to the friars with well-disposed affection, treating them with kindness and encouraging them, they present themselves to them as in no sense difficult or hard or peevish, but rather as easy, mild, well-disposed and liberal in loving generosity, and that in all the above-mentioned matters they welcome them with ready kindness as co-workers in the Lord's vineyard and as sharers in their labours, and that they guard and defend their rights with all charity, so that both bishops and friars, whose works as burning lamps set on a hilltop ought to provide light to all Christ's faithful, may move forward from strength to strength for the glory of God, the triumph of the catholic faith and the salvation of peoples, and in consequence deserve to obtain from the Lord, the most generous recompenser of all good deeds, the reward of eternal life.
至於主教,我们敦促和呼吁,招标摆布我们的上帝,虽然参加的修士与良好的处置感情,对待他们与爱心,并鼓励他们,他们亲自给他们在毫无意义的困难或硬或坏心眼,而是简单,温和,以及处置和自由的热爱慷慨解囊,并在上述所有问题,他们欢迎他们随时准备善良的共同工人在上帝的葡萄园和共享他们的劳动,他们警卫和捍卫自己的权利与所有慈善事业,使双方的主教和修士,其作品集燃烧灯山顶上应该根据提供的所有基督信徒,可能会向前迈进实力为荣耀上帝的胜利信仰天主教和拯救人民,因此应该获得的上帝,最慷慨的recompenser所有行善,回报的永恒的生命。
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The inducible nitric oxide synthase is obviously expressed in speen of rats under the predator stress, suggesting important function for iNOS in speen physiology. However, the expression and subcellular localization for NOS in speen development and differentiation are largely unknown. In the present study, the changes in iNOS activity in spleen of rats under predator stress were studied to explore the role of iNOS in the decreased immunoactivity of the stressed rats. The changes in iNOS were observed with immunobistochemical method, and the contents of NOS and NO in spleen with biochemical method.
在捕食压力下,大鼠脾脏诱导型一氧化氮合酶明显表达,说明iNOS起到了重要的生理功能,然而,NOS的表达及在亚细胞水平的定位以及相应的差异变化等都很不明确,本试验采用捕食应激模型,利用免疫组织化学方法和生化测定,检测心理性应激对大鼠脾脏iNOS活性的影响及探讨这种影响与应激动物免疫力下降之间的关系。
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The being-established of socialist market economy system bothreflects that the necessary claiming of the economic social conditions inthe present China and the correct choice done by C.P.C after summarizing theexperiences and chide of history.The socialist market economy is thehistorical sublation to the capitalist market economy and represents thefuture of the market economy.The development of socialist market economyembodies the inevitable history trend of the mankind pursuing thecivilization and evolution.The practice of the socialist market economy willbe open a new way for the underdeveloped socialist countries to accomplishtheir modernization and provides a mode for the developed capitalistcountries to sublate the abuse inside their capitalist institute.
从社会形态历史演变的角度看,社会主义市场经济形态,是对资本主义市场经济形态的历史扬弃,代表市场经济的未来和明天,它的出现和发展体现着人类追求进步和文明的历史必然趋势,它的实践为不发达的社会主义国家如何进行现代化建设开辟一条了正确的道路,也将为资本主义市场经济国家扬弃制度弊端提供一种示范,所以,从某种意义上讲,它是人类文明进程中所出现的新形态,开辟了人类通向&自由王国&的历史新道路。
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Finally, we present an arithmetic of multiplehypocentral, heterogenous dislocation, and a multirupture segment superposition model for simulating the earthquake deformation field. The simulated LOS interferometry map presents the distribution characteristics of the earthquake deformation field better than that of previous studied. Meanwhile, a suit of fault geometric parameters of the earthquake is also obtained by the study. Having a better effect upon simulating asymmetry, great dislocation, macro rupture field, and nonhomogeneity of dislocation than the traditional model, the multisegment method is a progress of this work. It provides a better explanation for the study on hypocentral parameters.
基于上述原因,本文对Okada线弹性位错模型的算法进行了改进,提出了&多震源、非均一位错分量、多破裂段叠加&的线弹性模型,该模型模拟出的形变场干涉纹图较好地体现了地震形变场的分布特征,并由此获得了一套较为完整的地震发震断层的几何学特征参数,为破裂带长度、破裂面方向、破裂面大小等震源破裂特征参数研究提供了较好的解释。
- 相关中文对照歌词
- Present For The End Of The World
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。