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为探讨极端干旱区风沙土土壤微生物与土壤环境因子的作用规律,采用相关分析法研究了塔里木沙漠公路防护林地土壤微生物生物量与理化因子和酶活性的关系.结果表明:土壤容重和粒径减小(R0.85)时,防护林地中土壤微生物数量和生物量有增大趋势,由容重与微生物量的相关性主导;土壤养分含量与土壤微生物数量和生物量呈正相关,主要由速效养分和放线菌、微生物生物量C、P的相关性所致;土壤酶活性与土壤微生物数量和生物量的相关性差异较大,R在0.51～0.91,主要取决于蔗糖酶、磷酸酶与放线菌、微生物量C的相关;土壤盐分增加不利于土壤微生物生物量的积累(R0.63).实践中应为干旱区林地土壤微生物营造良好的土体,促进土壤物质循环

[[alternative]]從傳統到策略產品外購, 一家公司如何藉此調整核心競爭力的想定 : 以英國某領導塑料地材廠家為例

碩士[[abstract]]企業核心競爭力概念的構建和調整過程， 有不同的方式。 本文是以一家國際領導的英國地材生產廠家為例，來說明由傳統保守型外購， 進而到策略型外購的發展，其對公司核心競爭力想定改變的影響。 傳統的外購僅在單純的找尋低成本的付出，將外購行為局限在技術操作的層面，避免其影響公司的核心價值。而策略型外購可以開發出鉅大的可能，透過策略採購，母公司與供應商彼此可以建立起僅次於合併的聯盟關係，從而增進其核心競爭力。然而這項整合的增進，究竟只是單純的二者競爭力的相加、還是相乘、或者甚至某些項目會移轉消失 將是進一步研究的課題。[[abstract]]There are different ways for a company to build up or modify its conception of core competence. This study is using an empirical case of a global industry leader, one UK flooring company as the example to describe how the adapting from its initial conventional outsourcing to a further strategic outsourcing affecting its enterprise’s conception of core competence. The traditional outsourcing stated that one ready for outsourcing company should position it as only a support of low cost but not center to its core competence. However the strategic outsourcing can leverage to the company’s core value and enhance its core competence. The consolidation of competencies from the host and vendor could be a further study that how to measure the new core competence of the combined SBU.[[tableofcontents]]Contents Chapter 1 Introduction..................... 1 1.1 Background and motivation...............1 1.1.1 background............................1 1.1.2 Motivation............................5 1.2 Overall Purpose.........................7 1.3 Research Structure and Discussion.......7 Chapter 2 Literature Review.................10 2.1 The core competence.....................10 2.2 The importance of core competence.......11 2.3 The outsourcing.........................13 2.3.1 The conventional outsourcing..........15 2.3.2 The strategic outsourcing.............16 Chapter 3 Case Study of the A flooring company.....................................20 3.1 Methodology of case study.. ........... 20 3.2 The flooring industry...................20 3.3 The A flooring company..................21 3.4 Interviews..............................23 3.4.1 Mr. J. D. CEO.........................23 3.4.2 Mr. G. W., Technical Director.........28 3.4.3 Mr. S .M., Director, Marketing........29 3.5 Finding presented by figure and table...32 3.6 Managing outsourcing and adapt the dynamic situation of core competence....... 35 Chapter 4 Finding and Presentation..........36 4.1 Strategic outsourcing help build core competence..................................39 4.2 Core competence is a dynamic ability which measured by scope but scale................40 4.3 The cooperation of the strategic outsourcing should be leveled at only second to mergence of companies....................44 Chapter 5 Conclusion and Suggestion.........47 5.1 Conclusion..............................47 5.2 Suggestion..............................48 List of figure Figure 1.1 The research flowchart........... 9 Figure 2.1 External market tests of a core competence..................................18 Figure 3.1 The initial position of the outsourced product “Spacia”...........32 Figure 3.2 The developed position of the outsourced product ‘Spacia”...........33 Figure 3.3 Product line changing before and after outsourcing...........................34 Figure 3.4 Strategy of marketing changing before and after outsourcing............... 34 Figure 4.1 Outsourced product incentive changing of the core competence.............42 Figure 4.2 Changing core competence from product outsourcing ...................43 Figure 4.3 Level of company cooperation.....44 Figure 4.4 Consolidation of core competencies................................45 List of table Table 2.1 Conventional vs. strategic outsourcing.................................19 Table 3.1 The outsourced products sales performance 2006 ~ 2008.....................35 Table 4.1 Changing of the outsourcing and core competence.............................38[[note]]學號: 791400046, 學年度: 9

A Probe into the Integration of Heterogeneous Knowledge Resources in Professional Field Based on CSpace DR

文章以中科院兰州文献情报中心开发的CSpace DR为研究对象,主要介绍和研究了CSpace DR所应具备的专业领域知识资源整合功能。研究发现,尽管CSpace DR通过知识发现和知识组织向用户提供多维度的异构知识资源整合服务,但CSpace DR对于异构知识资源的实体规范处理以及知识资源遴选评价体系构建方面还有待提高之处。&nbsp;</p

5羟甲基糠醛制备及其应用研究进展

5-羟甲基糠醛(HMF)被认为是最重要的生物质基平台分子之一,广泛应用于制备精细化学品、关键医药中间体、功能聚酯、溶剂和液体燃料等多功能化合物。目前,HMF的制备是生物质领域研究的热点,大量的研究使得制备HMF的原料和方法得到不断扩展。简单介绍了HMF的主要制备方法及其反应机理,系统综述了制备HMF的催化体系,包括催化过程中所使用的催化剂(无机酸、离子液体、金属氯化物、固体酸及其他催化剂)种类及制备HMF的溶剂体系。归纳了HMF重要衍生物的制备路径及应用,总结了目前研究中所存在的问题,并展望了未来的研究方向

A Pilot Plant on Study of Solvent Dewaxing

建立了一套酮苯脱蜡连续化中试装置,该装置吸收并采纳了工业实际情况,包括结晶系统、过滤系统、溶剂回收系统、冷冻系统以及仪表显示和控制系统.运用该装置对阿曼减三和阿曼减四精制油进行脱蜡试验研究,探讨脱蜡过程中溶剂加入位置、溶剂混合比和溶剂/油料稀释比对脱蜡效果的影响.试验结果表明,所建立的装置运行平稳,所获得的石蜡晶体以片状为主,所得到的脱蜡油的倾点和收率数据具有规律性和合理性.该研究工作为进一步利用该套装置对油料脱蜡进行系统研究以指导工业生产奠定了基础.A continuous pilot plant was established to study the dewaxing process by butanone and toluene mixture solvents for different refined oils.Considered and adopted some features from industry equipments,this plant consists of the crystallization system,the filtration system,the solvent recovery system,the cooling system and the control system with a capacity of 1~2 L/h feeding oils,and some important parameters can be flexibly varied.Using this plant,two refined oils were investigated under various operation conditions.The effects of the solvent-adding position,the butanone/toluene ratio,and the ratio of solvent over oil on the experimental results were explored.The pouring point and the recovery of the dewaxing oil were analyzed,and the paraffin crystals were detected by the scanning electron microscopy (SEM).The running of the experiments showed that the plant can be operated steadily,the experimental results indicated mainly the plate paraffin crystals formed,high ratio of solvent/oil and large amount of butanone in the mixed solvent were benefit to the paraffin crystallization for the studied oils and the dewaxed oil yields had a reasonable trend

钨合金的冲击动力学性质及细微观结构的影响

简单介绍了钨合金（主要为W-Ni-Fe）的制备工艺和常用热处理方法，其后着重从动态力学性能、剪切带的实验观察和研究、细微观结构对材料力学性能的影响等几方面总结和评述了近年来针对钨合金取得的主要结果。并在文章的最后初步提出了有前景的几个研究方向