399 research outputs found

    Stakeholder Communication and Coordination Management of Zhangzhou Ancient City’s Protection Project at Pre-Construction Stage

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    古城保护建设项目由于项目前期的产出不确定性高,参与方极易产生众多矛盾,各方利益的角逐可能促使最终的建设成果丧失了原来前期规划的古城韵味。本文的研究目标是如何有效地在古城建设施工前期进行干系人的沟通与协调管理,实现社会和市政府“古城建设,修旧如旧,有机更新”的要求,为今后类似的古城保护建设工程前期管理提供可参考和借鉴的方法。 本文的研究方法是采用个案分析法,针对漳州古城建设工程施工前出现的问题进行分析和归纳,总结出行之有效的管控机制。研究内容主要是以建设工程的前期管理特征为基础,结合沟通和协调管理理论的发展和现状,分析出古城建设项目前期存在组织架构不合理、缺少反馈、内外部协调渠道混乱、协调路径...Ancient city’s protection development may lose the original feeling at pre-engineering stage, due to the great uncertainty of project output, contradictions and different interests pursued by all participants. This dissertation aims to study on how to communicate and coordinate effectively at the project early stage of ancient city protection and development, to achieve the requirement of "ancient...学位:工程管理硕士院系专业:管理学院_工程管理硕士学号:1772014115109

    Study in delinquency and criminal policy

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    我国从上世纪七十年代末开始了社会现代化进程,社会、政治、经济和文化生活方面取得的长足进步为世人称叹,然而,与社会现代化相随的间歇上升的犯罪在不断吞噬现代化的成果,特别是少年犯罪问题尤为突出。少年犯罪问题已成为我国现代化进程中无法回避的一大难题,也是世界各国政府一百多年来一直不懈努力治理却仍不能根本解决的社会顽症。少年作为社会、国家的未来,如何变成所有人口中最容易产生犯罪的人群之一,着实令人费解、感叹,也引起了政治领袖、社会学者、犯罪学者、司法官员包括普通百姓等社会各阶层前所未有的关切。近年来,各方面在少年犯罪问题上倾注了极大的热情,用尽一切能想到的手段,有关少年犯罪(未成年人或青少年违法犯罪)...Beginning with modernization in 1970’s, China has got a brilliant achievement in all aspects including society, political, economic and her culture. However, along with the modernization, the crime ratio is also climbing, especially delinquency ratio, which is becoming a hot potato to our government, as well as to other governments. As the hope of our country, the Juveniles have been becoming the ...学位:法律硕士院系专业:法学院法律系_法律硕士(JM)学号:X20010809

    关于经济法概念和调整对象的再思考

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    在我国发展社会主义市场经济的新的历史条件下,应当重新确立经济法的概念和调整对象。经济法作为规范政府干预经济生活、保证政府干预的正当和适度的法律形式,从性质上看属于“二次调整“的法律,是对民商法规范的经济关系的再次调整和矫正的法律

    Preparation and performance of titanium phosphate with different mesoporous structure

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    采用溶胶凝胶模板法结合煅烧的方法,通过选用不同的模板剂合成得到具有不同介孔结构的磷酸钛材料,运用X-射线粉末晶体衍射技术(Xrd)、低温n2吸脱附技术和高分辨透射电子显微技术(HrTEM)对样品进行了表征,并分别对各材料的介孔结构及其电化学性能进行了研究。结果表明,材料介孔结构的长程有序性及其孔径大小都对材料的电化学性能有影响,例如在大电流密度下(如:150MA/g),长程有序性较好的与长程有序性较差的磷酸钛介孔材料的首次放电比容量分别为93.9、67.9MA/g,经过100次循环后,容量的保持率分别为54%、20%;大孔径与小孔径的磷酸钛介孔材料的首次放电比容量分别为96.1、67.9MA/g,经过50次循环后,容量的保持率分别为66%、17%。Titanium phosphate materials with different mesoporous structure were prepared by sol-gel different templates combined with calcination method.The mesoporous structure of the materials was characterized by small angle X-ray diffraction (SA-XRD) method, N2 adsorption/desorption techniques, and high resolution transmission electron microscopy (HRTEM).The results show that both the length of ordered mesostructure and pore size has a great influence on the electrochemical performance of the titanium phosphate materials.For example, the titanium phosphate materials with ordered and worse structure respectively delivers an initial discharge capacity of about 93.9 mA/g and 67.9 mA/g at 150 mA/g, and after 100 cycles, the capacity retention is 54% and 20% respectively.However, the titanium phosphate materials with the large and small pore size respectively delivers the initial discharge capacity of about 96.1 mA/g and 67.9 mA/g, and after 50 cycles, the capacity retention was 66% and 17% respectively.国家自然科学基金纳米科技重大计划课题资助(90606015);湖南省自然科学基金项目(09JJ3028);湖南省重点学科建设项目(2006-180

    FEC基电解液对高压正极材料Li2CoPO4F电化学性能的影响

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    本文研究了以氟代碳酸乙烯酯FEC(fluoroethylene carbonate)为共溶剂的电解液对高压正极材料Li2CoPO4F电化学性能的影响,与碳酸酯基电解液1 mol·L-1LiPF6EC/DMC=1:1(m:m)相比,1 mol·L-1LiPF6FEC/DMC=1:1(m:m)可显著提高Li2CoPO4F的循环稳定性.通过线性扫描伏安法(LSV)、扫描电镜(SEM)、X射线光电子能谱(XPS)、X射线衍射(XRD)结合电化学阻抗(EIS)对FEC改善Li2CoPO4F材料循环稳定性的机理进行了探索,结果表明与传统碳酸酯基电解液相比,FEC基电解液在高压下有着优异的抗氧化性,能够有效抑制电解液的氧化分解.同时,FEC基电解液中形成的表面膜具有更高的稳定性,能够抑制电极/电解液界面副反应的发生,提高循环过程中电极材料结构稳定性,从而有益于提高Li2CoPO4F材料的电化学性能.福建省自然科学基金项目(No.2014J05019);;国家自然科学基金项目(No.21233004,No.21303147);;厦门大学校长基金(No.20720150090)资

    Expression and activity characterization of thrombosis targeting protein hu3D3V_H-tTF to blood vessel of lung cancer

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    目的制备一种用于肺癌血管靶向栓塞治疗的融合蛋白hu3D3VH-tTF,并鉴定其生物学活性。方法利用重叠PCR技术构建tTF与hu3D3VH的融合基因,克隆至表达载体pET22 b(+),在E.coliBL21(DE3)中表达,镍亲和色谱柱纯化目的蛋白。ELISA检测融合蛋白hu3D3VH组分与肺腺癌细胞A549选择性结合活性,凝血实验和FⅩ活化实验鉴定融合蛋白tTF组分的促凝血活性。结果获得序列正确的hu3D3VH/tTF/pET22 b(+)重组子,融合蛋白在E.coliBL21(DE3)中高效表达。纯化后的融合蛋白与肺腺癌细胞A549具有选择性结合活性,并能活化FⅩ、有效促发血液凝固。结论成功构建hu3D3VH/tTF/pET22 b(+)重组子,hu3D3VH/tTF融合蛋白具有hu3D3VH的选择性结合能力同时具有TF的促凝血活性,为开展选择性肺肿瘤血管血栓性栓塞研究奠定了基础。 【英文摘要】 Purpose To prepare the fusion protein of hu3D3VH-tTF for thrombosis targeting therapy of lung cancer and to analyze its biological activities.Methods Fusion gene hu3D3VH-tTF was constructed by overlap PCR,cloned into expression vector pET22 b(+),and expressed in E.coli BL21(DE3).The fusion protein hu3D3VH-tTF was purified through Nickel-affinity chromatography column.The selective binding activity of the hu3D3VH moiety of fusion protein was analyzed using ELISA and the coagulation activity of the tTF moiety...福建省自然科学基金项目(C0410004);; 厦门大学科技创新项目(XDKJCX20053026

    Studies of preparation and properties of RGD-tTF water-based ferrofluids

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    目的探讨RGD-tTF水基磁流体通过磁场和RGD多肽在体外对内皮细胞双靶向的功能。方法通过化学沉淀法以柠檬酸钠为表面活性剂制备水基磁流体(MnFe2O4),弱酸改性后与重组的RGD-tTF融合蛋白结合,利用H-600透射电镜观测纳米粒径,以SUQID鉴定磁性,用MTT法、因子X活化检测和流式细胞仪检测RGD-tTF磁流体生物活性。结果成功制备出的水基磁流体能在磷酸盐缓冲液中稳定分布且具有生物兼容性,实验表明RGD-tTF与水基磁流体结合后对RGD和tTF生物活性均无显著影响,并证实在磁场的作用下能实现了水基磁流体对RGD-tTF的定位作用。结论一种具有内皮细胞双靶向功能的RGD-tTF水基磁流体已制备成功。 【英文摘要】 Purpose To study the property of RGD-tTF water-based ferrofluids double targeting EC304 cells in vitro by magnet and RGD peptide.Methods Water-based ferrofluids(MnFe2O4) were prepared by chemical precipitation method using citrate as surfactant, dispersed in weak acid to create surface charges,and coated with recombinant RGD-tTF protein.Proteins coated ferrofluids were characterized by H-600 transmission electron microscopy(TEM)and Superconducting Quantum Interference Device(SQUID),and its biological activi...教育部和厦门大学出国留学人员启动基金资

    凝胶推进剂模拟液静电雾化行为规律研究

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    针对凝胶推进剂雾化困难的问题,引入静电喷射技术雾化凝胶推进剂。以水凝胶模拟液为介质,探究静电雾化技术的可行性及试验条件,当收集距离2~5 cm、供液速率10~30μL/h时,凝胶模拟液可实现稳定雾化,收集液滴直径小于100μm,散射角分布在8°~36°之间,收集液滴直径和散射角均随收集距离的增大和针管直径的减小而减小;同样条件下,凝胶粘度越小,散射角和雾化液滴直径越小。在此基础上,针对单针管推力小的问题,分析使用多针管喷头进行凝胶推进剂静电雾化的可行性及其雾化区域分布,结果表明2号凝胶模拟液用于多喷头雾化可得到良好的雾化区域分布,适用于凝胶推进系统之中。国防科技重点实验室基金项目(61427040203162704004
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