763 research outputs found

    Research of Development Strategy of Hengli

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    我国中小企业发展迅速,已经成为国民经济与社会发展的重要力量和保持国民经济平稳较快发展的重要基础,但是随着发展进程的不断推进,中小企业由于管理水平落后,内外部支持体系不完善,市场信息把握不全等原因造成了诸多问题,制约了企业的生存与发展。企业学习并实践战略管理或许可以为解决或避免这些问题以及帮助企业走出困境提供一种有效的方法。本文通过对浙江省内某一实体企业在战略方面的应用研究,包括战略思维的产生、企业发展现状与前景以及如何对企业未来的发展进行战略选择与规划实施等,验证企业战略管理对其生存和发展是积极和有效的,同时为中小企业如何应用战略管理起到一定的启发与促进作用。 本文共分为六部分:第一章是研究...The medium-sized and small enterprises in our country have been growing rapidly. They already become an important force of national economy and social development and an important foundation to keep national economy developing fast and smoothly. However, along with the gradual promotion of their development process, these enterprises meet many problems which have restricted their survival and deve...学位:工商管理硕士院系专业:管理学院高级经理教育中心(EMBA项目)_高级管理人员工商管理硕士(EMBA)学号:X201015634

    Status on the diagnosis and treatment of BK virus infection

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    BK病毒(BKV)属于人类多瘤病毒中的一个亚型。BKV在普通人群中隐性感染率高达80%。近年来,随着器官移植术的广泛开展以及强效免疫抑制剂的大量使用,在免疫抑制和免疫低下的人群中,由潜伏于体内的BKV重新被激活而引起的BKV相关肾病(BKVAN)、出血性膀胱炎、输尿管狭窄等疾病越来越受到医学界的关注。目前对BKV感染缺乏明确有效的预防措施及抗病毒药物,因此早期监测器官移植术后患者体内的BKV载量、减少免疫抑制剂的使用量、及时调整免疫抑制剂治疗方案并辅助使用其他抗病毒药物对预防BKV相关疾病的发生尤为重要。文章就BKV感染相关的疾病及其临床症状、生物学特征、感染机制以及当前国内外诊断及治疗研究现状进行综述。BK virus (BKV) belongs to a subtype of human polyomavirus. Recessive infection rate of BKV in general population is about 80%. With expanded use of organ transplantation in recent years where strong immunosuppression is essential,BKV associated nephropathy(BKVAN),hemorrhagic cystitis,ureterostenosis and other associated diseases due to the reactivation of latent BKV in immunosuppressed or immunocompromised populations are becoming more of a concern in medical community. Since the prevention measures and effective antiviral drugs for BKV are rather limited,the effective means for reducing BK associated morbidity and mortality due to BKV associated diseases are the early monitoring of viral loads,reducing the usage of immunosuppressant,adjusting immunosuppressant treatment regime and using adjuvant therapies. This review describes the clinical symptoms,biology,mechanisms and the advances in the diagnosis and treatment of BKV at home and abroad

    A Floater Liquidometer Using Hall Effect

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    本文介绍了一种新型液位计,它根据霍尔效应,选用了霍尔开关矩阵作为敏感元件,利用磁浮子进行液位指示,满足了在高压密封环境下测量液位的要求。The paper is an introduction to a new floater liquidometer which use hall effect. This liquidometer has hall matrix as sensor, uses magnetofloater to indicate liquid level and fufills the measure of high pressure and hermetic circumstance

    Current status of vaccine development against leishmaniasis

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    利什曼病是由利什曼原虫引起的一种人兽共患寄生虫病,分布于全球90多个国家,每年新发利什曼病患者130多万,有2万~3万例死亡,给全球尤其是发展中; 国家带来沉重的社会经济及医疗负担。目前针对利什曼病的防治措施主要为控制传染源和药物治疗,但均无法消除利什曼病。疫苗接种是行之有效的并具社会经济效; 益的控制利什曼病的防治手段。因此,利什曼病疫苗的研发具有十分重要的现实意义。本文重点就利什曼原虫致病机制及各类利什曼病疫苗的研究现状进行综述。Leishmaniasis is a zoonotic disease caused by Leishmania parasites.; Currently, leishmaniasis has affected 12 million people in over 90; countries, with 1.3 million reported cases each year and 20 -30 thousand; deaths. The disease causes a large social and economic burden; particularly in developing countries. Current strategies for; leishmaniasis control include controlling the source of infection and; drug treatment, both of which, however, cannot eliminate the disease.; Effective vaccination would be an ideal approach to control; leishmaniasis. Here, we review the pathogenic mechanism of Leishmania,; the existing vaccines for veterinary use, and human vaccine development; efforts against the disease

    低维纳米结构材料的弹性性能研究进展

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    文章从实验研究、理论分析和数值模拟三个方面分别介绍了目前国内外关于低维纳米结构弹性性能尺寸效应的研究现状,总结了现有的一些研究方法和结论

    理解中国特色社会主义道路自信的三个维度

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    中国特色社会主义道路自信就是相信这一道路既符合社会主义发展的一般规律,又符合中国现实国情,是一条成功的、科学的、正确的发展之路。“道路自信”源自中国发展的历史逻辑和改革开放所取得的伟大成就,源自这一道路既坚持了科学社会主义的基本原则又赋予其鲜明的中国特色。坚定“道路自信”就是要凝聚共识和改革力量,全面深化改革,实现社会主义现代化和中华民族的伟大复兴。福建省社会科学规划项目“马克思恩格斯社会主义观及其当代价值研究”(项目批准号:FJ2016C068);中央高校基本科研业务费专项资金项目“社会主义观:从经典到中国特色”(项目批准号:20720161020)的阶段性成果

    “真正的民主制”:马克思民主思想的初步建构——重读《黑格尔法哲学批判》

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    《黑格尔法哲学批判》中,马克思提出了\"真正的民主制\"概念,初步建构了自己的民主思想。马克思阐明了市民社会决定国家的观点,为真正的民主制提供了哲学前提。马克思通过否定黑格尔的君主主权论确立了人民主权论,奠定了真正的民主制的理论基础。在马克思看来,真正的民主制将通过立法权和普选权实现市民社会和政治国家的统一,私人利益和普遍利益的统一。2016年福建省社科规划项目“马克思恩格斯社会主义观及其当代价值研究”(项目批准号:FJ2016C068);;中央高校基本科研业务费专项资金项目“社会主义观:从经典到中国特色”(项目批准号:20720161020)阶段性成

    Preparation and Characterization of Pt-Ni-SnO2/C for Ethanol Oxidation Reaction

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    采用改进的Bonnemann法成功制备了Pt/C、Pt-Ni_(1/3)/C、Pt-SnO_2/C、Pt-Ni_x-SnO_2/C(x =; 1/4, 1/3, 2/3,; 1)阳极电催化剂。利用X射线衍射(XRD)、高分辨透射电子显微镜(HR-TEM)以及X射线光电子能谱(XPS)对催化剂晶型结构、表面形貌和表面电; 子结构进行了表征。运用线性扫描伏安(LSV)和电流密度-时间(j-t)曲线进行电化学测试,研究了乙醇电催化氧化(EOR)活性。并用原位红外光谱(; in situ; FT-IR)研究了EOR过程中产物的分布。结果表明,Pt-Ni_(1/3)-SnO_2/C是由Pt-Ni合金和SnO_2两相组成。XPS结果表明; ,在Pt-SnO_2中添加微量的Ni,Pt表面电子结构发生了改变。电化学结果表明,三元催化剂的EOR活性均优于二元和纯Pt,其中Pt-Ni_(1; /3)-SnO_2/C的EOR活性最佳。Ni和SnO_2的加入并没有显著提高乙醇C-C键的断裂能力,但是二者的协同作用在低电位(0.1; V)下加强了乙醛的进一步氧化,生成了乙酸。A series of Pt/C, Pt-Ni-1/3/C, Pt-SnO2/C and Pt-Nix-SnO2/C (x = 1/4, 1/3, 2/3, 1) anode electro-catalysts have been synthesized by an improved Bonnemann method. The crystal structure, surface morphology and surface electronic structure were characterizated by X-ray diffraction (XRD), high resolution transmission electron microscope (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The electro-catalytic activities were characterizated by linear sweep voltammetry (LSV) and amperometric current density-time (j-t) curve techniques for ethanol oxidation reaction (EOR). In situ spectroelectrochemical studies have been used to identity adsorbed reaction intermediates and products (in situ Fourier transform infrared spectroscopy, FT-IR). XRD and HR-TEM analysis revealed two phases in the ternary Pt-Ni-SnO2/C catalyst: Pt-Ni alloys and SnO2. XPS results show that the electronic structure of the Pt in Pt-Ni-1/3-SnO2/C might be changed due to the addition of Ni. The activity of Pt-Ni-SnO2/C for EOR was found to be higher than that of Pt/C, Pt-Ni/C and Pt-SnO2/C catalysts. The incorporation of Ni and SnO2 did not significantly improve C-C bond breaking for complete oxidation of ethanol, but the synergy under the low potential (0.1 V) to strengthen the further oxidation of acetaldehyde, generate the acetic acid.吉林省科技发展计划项目(20120741)和厦门大学固体表面物理化学国家重点实验室开放课题(201407)资

    PtNiSnO/C的制备、表征及其电催化氧化乙醇活性

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    采用改进的B?nnemann法成功制备了Pt/C、Pt-Ni/C、Pt-SnO/C、Pt-Ni-SnO/C(x=1/4,1/3,2/3,1)阳极电催化剂。利用X射线衍射(XRD)、高分辨透射电子显微镜(HR-TEM)以及X射线光电子能谱(XPS)对催化剂晶型结构、表面形貌和表面电子结构进行了表征。运用线性扫描伏安(LSV)和电流密度-时间(j-t)曲线进行电化学测试,研究了乙醇电催化氧化(EOR)活性。并用原位红外光谱(in situ FT-IR)研究了EOR过程中产物的分布。结果表明,Pt-Ni-SnO/C是由Pt-Ni合金和SnO两相组成。XPS结果表明,在Pt-SnO中添加微量的Ni,Pt表面电子结构发生了改变。电化学结果表明,三元催化剂的EOR活性均优于二元和纯Pt,其中Pt-Ni-SnO/C的EOR活性最佳。Ni和SnO的加入并没有显著提高乙醇C―C键的断裂能力,但是二者的协同作用在低电位(0.1 V)下加强了乙醛的进一步氧化,生成了乙酸。吉林省科技发展计划项目(20120741);厦门大学固体表面物理化学国家重点实验室开放课题(201407)资助~~
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