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Because the olefinic hydroxyl groups are linked with olefinic carbon, so it can ionize H〓 ion and present the properties of weak acid, and so the olefinic hydroxyl groups change into the structure of alcoholate in the presence of alkali , but the structure of alcoholate may change into the structure of olefine alcohol again, after the Na〓 ions is removed, or when the pH value of its solution turn into pH. Because the structure of the olefine alcohol is not stable and is easy to isomerizate to become the structure of olefine ketone, so there appear the ca. 1730cm〓 C=O absorption peak in the IR spectra of the products.

明确指出了在C〓、C〓富勒醇中存在烯碳羟基与叔碳羟基等二类羟基,烯碳羟基由于与一个共轭体系相连,从而其羟基可以离解而呈现出弱酸的性质,因而在碱性条件下易形成烯醇钠盐的结构,当除去钠离子后或在酸性溶液中,烯醇钠盐结构转变为烯醇结构,但由于烯醇结构不如烯酮结构稳定,从而形成烯醇结构后,烯醇结构异构化为烯酮结构,因此在其产物的IR谱图上出现1730cm〓附近的C=0吸收信号。

The absolute solution of Jiaojia ERP is put forward, the system models are established, and the solution are explained in detail. The business program of Jiaojia gold mine is reengineered based on the theory of "business centers", and the program-oriented compressed organization is framed. The index group and the solution of mine total quality management are setup. Then the optimize program of SCM and its components are designed on the guidance of "Horizontal Integration". The data of Jiaojia gold mine are reengineered based on the data warehouse technology. The information integration can be available after the establish of the business oriented databases, the subject integration oriented data marts, the application oriented data warehouses, the code databases and metadata, as weil as the OLAP system. The mathematics models and data mining modes are set up to function for the decision support of ERP system. The model of programming Master Production Schedule driven by geological resources and marked is figured out, so as to the models for material requirements planning and other decision supports are set up. The models provide service in forms of model storehouse, method storehouse, and algorithm tools center. The agent center is introduced to process the models' organizing, service, as well as self-study. The function system of Jiaojia gold mine ERP is figured out. By combining the development characteristics of Clients/Server and Browse/Server, the general framework and every sub systems are described in detail, including the function, structure, arrangement, modality, and so on.

主要内容如下:(1)深入论述了黄金矿山实施ERP的可行性,并结合应用需求将ERP理论在深度和广度上进行了拓延,建立了黄金矿山ERP系统的理论基础:以资源与市场共同驱动的供应链管理;黄金矿山的双重物流体系;以地质资源有效利用为目标的生产控制体系;黄金矿山财务管理的成本控制核心理论等;(2)提出焦家金矿ERP系统的整体解决方案,构建ERP系统模型,并进行了细节方案的设计:基于"作业过程核心"理论重新规划焦家金矿的业务流程,在此基础上设计面向流程的"扁平化"组织机构;建立了矿石全面质量管理的指标体系和实施方案;以"横向一体化"为指导思想,提出供应链管理各组成部分的全面优化方案;(3)以数据仓库技术为核心完成焦家金矿的数据规划,分别建立面向业务的数据库、面向主题集成的数据集市和面向主题应用的数据仓库,设计代码数据库和元数据库,定义OLAP方式,实现焦家金矿的全面信息集成;(4)针对ERP系统中的决策支持功能,建立了相应的数学模型和数据挖掘模型,提出了地质资源和市场共同驱动的主生产计划模型制定过程,进一步建立了物料需求计划的线性规划模型,以及其它决策支持模型;提出以模型库、方法库和算法工具为核心的模型服务方式,并设计了代理机制完成模型的组织、服务和自学习过程;(5)构建焦家金矿ERP系统的功能体系,针对C/S和B/S模式系统的开发特点,分别对功能体系架构以及各子系统的功能、结构、层次和形式进行详细设计。

Vibration-isolated structure is such a new type structural system which can satisfy above demand by dividing the structure into three parts: upper structure, vibration-isolated layer and subjacent structure.

隔震结构正是一种能满足上述要求的新型结构体系,它通过设置隔震层,将结构分为上部结构、隔震层和下部结构三部分,地震能量经由下部结构传到隔震层,由隔震层的隔震装置吸收并消耗主要能量后,仅有少部分能量传到上部结构。

The above method can be used as a general method of determining molecular weight distribution of polymers.4.Solid-state ~1H wide-line NMR and ~(31)p magic angle spinningNMR were applied to a series of PEI/DNA complex samples with different PEI molecular weights and nitrogen/phosphatemolar ratios,in order to disclose the influence of various structural factors on the interactions and morphology.The results of ~1H NMR spectra showed that the linewidth of the PEI signal was greatly broadened with increasing the N/P ratio.Meanwhile,in the ~(31)p M_AS experiment,the signal was found to shift upfield with the increase of the N/P ratio.Both ~1H and ~(31)P NMR experiments demonstrated that the interaction between two constituents and subsequently the morphology of the complexes vary with the N/P ratio.

首次将固体核磁共振应用到聚合物/DNA复合物体系,观察复合物体系中不同N/P比对其相互作用和相结构的影响,研究表明N/P比的变化对聚乙烯亚胺/DNA基因递送体系分子水平上相互作用有着很大的影响;另外,还发现不同分子量的聚乙烯亚胺聚合物载体在N/P比为3的情况下对复合物中DNA的微观尺度没有明显影响;通过氢的自旋扩散实验,首次测得在PEI/DNA复合物体系中DNA相尺寸的大小,并发现在体系中N/P比达到3以上的复合物中DNA和PEI达到了分子水平上的相容。

The social level structure is defined from its basic conception, in-depth meaning and characteristics. The term refers to a functional being and social reality, a unity of physical space and value space as well as connectional and theoretical existence. Viewed from the perspective of political philosophy, the social level structure is a political sovereignty grading or ladder in a state who values the supremacy of sovereignty, penetrating into economic, cultural and social fields, universally forming social relationship. Based on general social structure, social system and political sovereignty, the social level structure is an abstractly summary of social hierarchy which is neither a copy of political structure nor simply addition of economic, cultural and social structure. The social level structure is long hidden but universally existing, deeply affecting and shaping social system, people's life and thinking. Based on the above, the thesis probes the social foundation, evolutional law, fundamental quality, running mechanism, historical function, current significant and the reform necessity.

从社会层级结构概念的基本规定、深层意蕴和性状表现三个方面界定社会层级结构概念,认为社会层级结构既是一种实体性存在和社会现实,也是一种观念性存在和理论构造,是物理空间和意义空间的统一;从政治哲学视野,社会层级结构是在政治国家内部按照权力至上的方式形成的权力级别或权力阶梯,并渗透到经济、文化、社会领域,形成具有普遍性的社会关系体系;它以总体社会结构为依托,以社会制度为外化,以政治权力为中轴;它既不是政治结构的翻版,不是社会阶层结构的别名,也不是经济、文化、社会结构的简单叠加,而是对它们层级性的一种抽象和概括;这种结构长期隐而不显,但却无处不在、无时不有,深深地影响和牢牢地控制着社会制度、人的生活和人的思维方式。

Culture"," culturology" and "the cultural system", are the basic categories in his culturological system. Based on them, there are the definition, category, nature and characteristics of "culture"; the object, mission, the research mode, and the development course of" culturology"; ten "basic types", three "the upper level types", the structure, and the mentality of "the cultural system"; the twin categories of "culture" and "society","culture" and "nature","culture" and "civilization","culturology" and" sociology"," the cultural system" and" natural system"," the cultural system" and" social system, etc.

以它们为中心,涉及到基本内容有:&文化&的定义、分类、性质与特征;文化学的对象、任务、研究模式、发展阶段;&文化体系&的十种&基本类型&、三种&上层类型&、结构与心态;以及成对的范畴&文化&与&社会&、&文化&与&自然&、&文化&与&文明&,&文化学&与&社会学&,&文化体系&与&自然体系&、&文化体系&与&社会体系&,等等。

Degradation test in vitro was carried out in phosphate buffer solution (0.1M, pH7. 4) at 37 ℃. The buffer solution was changed daily. Degradation test in vivo was implanted the sample to subdermal in adult ICH rat in the scapular area lateral to the dorsal midline. At suitable time the samples were recovered. Molecular weight changes in surface layer and bulk of polymer sample were measured by GPC and weight loss was determined gravimetrically. It was found that the degradation behavior can be regulated by changing the composition of copolymers. The critical compositions from surface to bulk degradation behavior for PGCA, PLCA, PLMCA, PLDCA systems were 15-20, 20-30, 30- 40, 40 of mol percent GA or LA unit in copolymers, respectively. The degradation behavior of PGCA, PLCA, PLMCA, PLDCA systems were compared and analysed. Some factors influencing the degradation character, such as copolymer composition, hydrophobicity, crystallinity and enzyme affect etc. played important role.

体外实验中材料降解环境为37℃,0.1M,pH7.4磷酸缓冲溶液,每天换液,定期取样;体内实验中将聚合物试样埋置于ICH小白鼠背部肩胛骨皮下部位,定期处死小鼠,取样,将体内体外样品进行重量损失及试样内外层分子量变化测定,分析各聚合物试样降解行为特性,实验结果证明,改变共聚物组成,可以调节各聚合体系降解行为特性,对PGCA,PLCA,PLMCA,PLDCA共聚体系,交酯摩尔百分含量15-20%,20-30%,30-40%,40%分别为各体系内降解行为特性由表面降解型向本体降解型过渡的临界转折点,交酯含量较低的聚合物不同程度地表现表面降解行为特性,论文对各共聚体系体内外降解行为作了分析对照,例如共聚物组成对材料降解速度与降解行为的影响;生物体内酶对降解行为的影响;材料亲疏水性,聚合物链段结晶行为及碳酸酯结构对材料降解行为的影响等,得出交酯/环碳酸酯共聚体系降解行为一些共性和规律。

Nanning International Convention and Exhibition Center is a building of large-scale and complex structure system. Multiplicate types of structures and new technologies are applied in the project, including prestressed concrete, reinforced concrete, spatial truss, membrane and structural transfer floor etc.

摘要]南宁国际会展中心是一个规模宏大、结构体系复杂的大型建筑,在整个结构方案中,综合使用了多种结构形式和新技术,包括:预应力混凝土结构、钢筋混凝土结构、空间网壳结构、膜结构和结构转换层等。

This text from analyze the basic theories of the target management to commence, study basic method and steps of the teacher troops target management of the implement military school, and began to set up the teacher troops target management system of the military school from here, putting forward the system to set up of limit and excellent turn the measure; Around the system set up, in a specific way divided the line the implement target management of layer structure, designed the workflow of the teacher troops target management of military school, set up the index sign system of the teacher troops target management of the military school; In completing the foundation of the teacher troops target management index sign system of set up the military school, according to manage the analysis of the index sign contents to the teacher troops target of the military school, adopt AHP and layers to analyze the method to make sure its index sign main factor and its powers.

本文立足军校教员队伍目标管理的概念和基本理论,研究了实施目标管理的基本方法与步骤,并由此着手构建了目标管理体系,提出了体系构建的局限和优化措施;围绕体系构建,界定了体系概念,确定了管理模式,划分了实施目标管理的层次结构,设计了军校教员队伍目标管理的工作流程,构建了军校教员队伍目标管理的指标体系:在完成构建军校教员队伍目标管理指标体系的基础上,根据对目标管理指标内容的分析,采用德尔菲法和层次分析法确定了其指标要素及其权,并加以实例验证。

In the present dissertation, a surfactant-templated mesoporous silica molecular sieve with high pore volume, high porosity and narrow bimodal mesopore size distribution was synthesized for the first time in a reaction system, which was used usually in the synthesis of mesoporous MCM-41 molecular sieves, by a judiciously controlled two-phase sol-gel processing under basic conditions.

在本论文中,我们通过对一个通常用于制备介孔MCM-41分子筛的反应体系中正硅酸乙酯水解与缩合反应相对速率的精确调控,首次在弱碱性体系中合成了一种具有高孔隙率、大孔体积和双介孔孔分布特征的新型二氧化硅分子筛材料,简记为BMS,并对BMS二氧化硅分子筛中双介孔结构形成的原因及各种可能对其结构和性质产生影响的合成因素如Ammonia/silica摩尔比、组分浓度的变化、表面活性剂烷基链长度的调节、辅助有机物均三甲苯的引入、催化剂的结构和性质、溶剂和助溶剂的极性和用量、老化和干燥条件的变化及合成后水热处理等,利用不同的测试手段如XRD,SEM,TEM,〓Si MAS NMR,TG-DTA,N〓吸附测试等进行了系统的表征研究。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。