245 research outputs found

    Research Progress of Laboratory Diagnosis of TB

    Get PDF
    Early, rapid, and accurate identification of Mycobacterium tuberculosis is crucial to the treatment and management of the disease, and laboratory diagnosis is an important means for its diagnosis, treatment, and prevention control. Common methods include pathogenic methods based on bacterial smear and culture, molecular methods based on polymerase chain reaction (PCR), immunological methods such as tuberculin skin test and gamma-interferon (IFN-γ) release test, and the latest emergence of molecular methods, such as Xpert MTB/RIF and CRISPR technology have provided new perspectives for TB diagnosis. This review focuses on the main research advances in laboratory diagnosis of TB

    Housing Bubbles: A Critical Review of Theoretical and Empirical Issues and Case Study on the Ordos Housing Bubble

    Get PDF
    本论文简要概述了在目前背景下对住房市场泡沫问题的研究,重点关注房产价格动态理论及其实践的问题,并对以鄂尔多斯房地产泡沫为本文的经典例题作了进一步阐述。首先以有效市场假说(EMH)为主要理论基础进行市场动态分析,简要总结有效市场假说在金融和住房市场问题上的实证检验问题。阐述了有效市场假说和泡沫形成潜在原因的局限性,且探讨了包括理性预期与非理性行为等因素的作用。还提出了两个主要的工作方法及定义,识别和预警房地产泡沫,也对有效市场假说之外的泡沫经济理论作了些简要介绍。本论文以目前国内可能搜集到的数据信息,对衡量判断房地产泡沫的不同方法进行了深入研究。进而以鄂尔多斯房地产泡沫作为经典例题阐述了关于在有...This paper provides a critical survey of current research on bubbles in the context of housing markets, focusing on theoretical and empirical issues in housing price dynamics, as well as an original case study on the Ordos housing bubble. The paper starts with the Efficient Market Hypothesis (EMH) as the predominant underlying theory for market dynamics and briefly summarizes empirical tests of th...学位:经济学硕士院系专业:王亚南经济研究院_金融学(含保险学)学号:2772011115440

    Development of social enterprises in rural island tourism in China = 中国海岛乡村旅游的社会企业发展

    Get PDF
    This paper discussed the major development stages of social enterprises (SEs) in rural island tourism in China. The authors established a conceptual framework with which to analyze the key factors affecting development under the context of Chinese social and economic institution. Informed by the SE life cycle model, the study adopted a case study approach with the Boxue Eco Village on Hainan Island as the case. Data were collected through in-depth interviews, focus group interviews, and observations. Institutional characteristics at every stage, including entrepreneurial, collectivity, standardization, and refinement, were analyzed. Based on the specificity of SE of rural tourism in this case, the authors summarized the influencing factors that shaped the development process of the enterprises. First-hand data were collected through interviews with entrepreneurs, management staff, villagers, and other stakeholders. The model was modified according to the research results, and provides a more integrated model suitable for SEs in Chinese islands. This study established a conceptual framework with which to analyze the development process of SEs in rural tourism within the institutional context of China. This framework could be applied to understand the substantial development of emerging SEs in China. = 本文讨论了中国海岛的乡村旅游中,社会企业发展的主要阶段。作者构建了一个概念模型,分析在中国社会经济制度条件下,影响社会企业的发展因素。结合社会企业生命周期模型,本研究以海南岛博学生态村为案例,通过深度访谈,焦点小组访和实地观察采集数据,展开分析。分析了包括创业、集体、标准化、精细化每个阶段的制度性特征。根据案例中的乡村旅游社会企业的特殊性,作者归纳了影响社会企业发展进程的影响因素。本研究通过对企业家、管理者、村民和其他利益相关者的访谈采集了一手数据。根据研究结果调整了理论模型并且提出了更加适合中国海岛乡村旅游社会企业的整合模型。本项研究为中国制度环境下的乡村旅游中,社会企业的发展建立了一个概念框架。该框架可以帮助人们理解新兴的中国社会企业的发展本质

    Discussion of signature-based models of preventive maintenance

    Get PDF
    [We congratulate Asadi, Hashemi, and Balakrishnan for a comprehensive review of age-based maintenance strategies and a thorough study of the statistic “signature” for age-based maintenance of multi-component coherent systems. Among many contributions, Asadi, Hashemi, and Balakrishnan's paper also provides a taxonomic framework with which to categorize and classify the plethora of age-based maintenance models. Section 2 is of great importance, providing new researchers with a reliable nomenclature. What is missing in this section, however, is a detailed explanation of the notation “coherent system,” which will also help clarify the type systems to which the notation signature is applicable. Case study in this article covers a wide range of scenarios, and the two exemplar systems are also representative. However, the case study serves more as a tutorial rather than a proof of superiority. The tables and figures are for demonstrating the (uniqueness of) optimization results, but not for justifying the advantages of using the statistic signature. It would be of much practical value to compare the relative performance of maintenance models with and without using signature...

    Stand-alone CuFeSe2 (Eskebornite) nanosheets for photothermal cancer therapy

    Get PDF
    Two-dimensional CuFeSe2 nanosheets have been successfully obtained via solution-phase synthesis using a sacrificial template method. The high purity was confirmed by X-ray diffraction and the two-dimensional morphology was validated by transmission electron microscopy. The in-tense absorption in the 400–1400 nm region has been the basis for the CuFeSe2 nanosheets’ photo-thermal capabilities testing. The colloidal CuFeSe2 (CFS) nanosheets capped with S2− short ligands (CFS-S) exhibit excellent biocompatibility in cell culture studies and strong photothermal effects upon 808 nm laser irradiation. The nanosheets were further loaded with the cancer drug doxorubi-cin and exposed to laser irradiation, which accelerated the release of doxorubicin, achieving synergy in the therapeutic effect
    corecore