2,825 research outputs found

    The role of arsenic nano-drug in the treatment of liver cancer

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    目的:三氧化二砷(ATO)是临床上能够有效治疗急性早幼粒细胞性白血病的药物。然而,由于治疗剂量限制和药代动力学欠佳,影响了它在抗肿瘤治疗中的运用。亲合体(Affibody)是一类新型独特的蛋白结合配体,分子量小、亲和力强、稳定且可修饰,比普通抗体具有更多优势。目前国内外尚无将亲合体用于肝癌靶向治疗的研究。为了更加有效地将ATO药物运输到肝癌细胞并产生更高的毒性,我们前期已经合成了两种新型砷纳米药物:EGFR靶向修饰的镍砷纳米药物(Ni,As@SiO2-Affibody)、锰砷纳米药物(Mn,As@SiO2)。本文在细胞、组织、小动物等水平上研究这两种纳米药物的细胞毒性、靶向效果和抑制肝癌生长等...Background and objectives: Arsenic trioxide (ATO) is an effective clinical drug to treat acute promyelocytic leukemia. However, its application in oncotherapy is limited due to the dose-limiting toxicity and poor pharmacokinetics. Affibody is a special protein binding ligands and possesses many advantages, such as small molecular weight, strong affinity, special modification sites, and high stabil...学位:医学硕士院系专业:医学院_外科学学号:2452012115317

    The Influence of Environmental Regulation on Industrial Upgrading

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    过去粗放式的经济发展方式使得中国环境问题不断加剧。例如北方地区的空气严重污染对人民群众的健康带来了极大的不利影响。近年来,环境污染问题日益得到政府的重视。各级政府出台了不少控制污染的政策措施,也加大了环保产业发展的扶持力度,以期通过这些途径来改善中国环境。与此同时,中国经济面临着转型升级的迫切需要。然而,环境规制对产业升级的影响,学界研究尚少。如何处理好环境规制与产业升级的关系在现阶段具有重要的现实意义,本文着眼于环境规制与产业升级的关系进行研究,以期研究结果对于解决中国现阶段环境规制与产业升级的矛盾关系提供借鉴意义。 本文以1999-2012年中国宏观层面的年度数据为样本,实证分析了环境规...In the past, the extensive mode of economic developing method cause the growing environmental problems in China. Such as air pollution in the northern areas, people's health has brought great negative impact. In recent years, government had started to focus on environmental pollution problems. All levels of government introduced a number of policy to control pollution, and started to support the d...学位:经济学硕士院系专业:经济研究所_产业经济学学号:1602013115222

    Design and Implementation of Mobile Internet PharmacyManagement System

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    近年来,我国经济每年以7%的经济增长速度发展,同时人民的生活水平也大幅度提高,大大推动了医药产品的需求,医药行业也以全新的迅猛的速度发展着。医药产业向”物联网化、移动互联化、分布化”方向快速发展。自从移动互联网技术与触屏手机得到大规模的应用以后,医药经营管理企业在全新的竞争激烈的市场环境中为了占得医药管理能力的先机,除了要加强内部管理,提高运营效率,更是积极推进医药管理移动互联信息化。因为医药行业的医药产品的特性是种类繁多、销售专业性强,零拆繁复,价格差异大,进货退货验证审核复杂,零售需求分散,传统的电脑记账与门店等客上门的销售模式已经渐渐落后。而通过移动化、物联网化、网络化管理医药连锁企业可...In recent years, China's annual economic growth rate of 7 percent economic development, and people's living standard has greatly improved, which greatly promoted the demand for pharmaceutical products, the pharmaceutical industry has entered a new period of rapid development. Pharmaceutical industry to the "Internet of Things, mobile Internet technology, the distribution of" rapid development. Sin...学位:工程硕士院系专业:软件学院_软件工程学号:X201223031

    The Role of the Long Non-Coding RNA AK035610 in Epileptogenesis

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    目的:使用海藻酸(Kainicacid,KA)诱导C57BL/6小鼠产生癫痫样发作以模拟人类颞叶癫痫的发作状态,通过基因芯片方法筛选出异常表达的长链非编码RNA(lncRNA)。选择并探讨其中一个lincRNA-AK035610及其靶基因INHBA在癫痫发病中的参与及调控机制,从而为癫痫的诊断和药物研发提供新的思路及生物学靶点。 方法:使用6-8周C57BL/6雄性小鼠,通过腹腔注射海藻酸构建癫痫发作小鼠模型,分离癫痫发作小鼠和对照小鼠的海马,提取RNA后使用长链非编码RNA基因芯片进行分析,对癫痫小鼠中发生异常表达的lncRNA,特别是位于基因之间的LincRNA进行筛选和聚类分析。通过实...Objective: In order to establish an animal model of human temporal lobe epilepsy, C57BL / 6 mice were induced into epilepticus seizures by kainic acid. To explore the dynamic changes of regulatory networks and functional pathways of lncRNA in the pathogenesis of epilepsy, and provide new evidence for the diagnosis of epilepsy and new targets for anti-epileptic drug development. Methods: C57BL / 6...学位:医学硕士院系专业:医学院_外科学学号:2452014115353

    Difficulty Study: English Recursive Structures in Sight Translation

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    难度研究正日益成为口译研究的重点。它对口译培训、市场操作和资格考试都有重大意义。源语文本因素是口译难度研究的重点但多数集中于交传和同传研究中。视译的相关研究不多且很少单独关注某一文本特征。本文重点关注英译汉视译中的口译难度并尝试从主观评价(难度自我评估和视译得分)、流畅度(任务完成时间和无声停顿)、和忠实度(错译漏译和更正)等角度出发探索口译难度和英文文本递归性的关系。本文邀请了中国某著名大学的8名口译初学者和8名高阶学习者参与实验。实验材料选自大卫·卡梅伦2016年辞职演说中语义联系紧密连贯的两个片段。片段1比片段2有更多递归结构。 研究结果显示1)如果选用错译漏译、任务完成时间、无声停顿...Difficulty study is gaining evermore importance as the results are very helpful to interpreting training, market practices and accreditation tests. Source text factors are major concerns of interpreting difficulty but most studies are related to CI & SI. Relevant studies upon ST are few and seldom target at one single text factor. This study focuses on interpreting difficulty in ST from English to...学位:翻译硕士院系专业:外文学院_翻译硕士学号:1202014115272

    从《宣德十年月五星凌犯》看回回历法在明朝的使用

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    《宣德十年月五星凌犯》是15世纪40年代从中国明朝传入朝鲜李朝的一份重要的天文学文件,详细列出了明宣德十年全年月亮和五大行星之间以及它们对恒星的凌犯现象。经验算,这些结果都是用明初编订的《回回历法》中所给出的算法计算的,目的显然是为中国的凌犯星占服务的,与朱元璋下令翻译回回天文星占著作的初衷一致。新发现的其他史料也表明,明朝政府除了把回回历法用于日月食的预报外,每年还用它计算回回民用历书、天文年历以及月亮和五星的凌犯;而且,对月亮和五星凌犯的计算结果及其星占也确实被朱元璋用于自己的政治活动之中

    The Vehicle Image Retrieval Based on Multiple Vocabularies index

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    车辆图像检索是智能交通系统的重要组成部分,车辆检索在停车场智能管理、高速公路自动收费、道路监控、超时停车检测等方面有着非常好的应用前景。本课题来源于高速公路服务区车辆智能检测项目,是基于特定场景下的车辆图像检索问题。 车辆图像检索主要是基于车辆检测、目标区域提取、特征提取和特征匹配的相关技术,目前关于图像检索的技术研究相对来说比较成熟。本文旨在进一步研究车辆图像特征在索引层面的融合,在有光照变化等情况的交通场景中能够进行准确的车辆图像检索。本文的主要的研究内容如下: 1.研究图像检索的流程和经典算法,分析和总结了车辆图像检索流程中的关键要素、检索流程和特征提取。研究了不同检索流程和特征提取...The vehicle image retrieval is an important part of intelligent transportation system. Vehicle retrieval has good application prospect in intelligent parking lot management, highway automatic charge, road monitoring and parking timeout detection. This paper comes from vehicle intelligent monitoring projects of highway service area, the problem bases on fixed background of vehicle image retrieval. ...学位:工程硕士院系专业:信息科学与技术学院_计算机技术学号:2302011115306

    A Study of Selecting Suitable Performance Evaluation System for Chinese Enterprises

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    在EVA,平衡计分卡,综合计分卡等方面的文章充斥着各种刊物,大部分文章都不假思索的以知识经济的到来,智力资本的地位的重要性开始论述,之后得出企业应该实践着最新的绩效评价方法。而在实务界,平衡计分卡、综合计分卡等绩效评价方法也被广泛采用。本文从大部分文章少有思考的绩效评价方法的假设前提出发,去分析企业如何选择适合于自己的绩效评价体系,而不是以绩效评价方法的创立背景为想当然。 本文在总结企业绩效评价体系相关的基础理论和回顾国内外企业绩效评价体系的发展阶段的基础上,分析影响我国企业绩效评价体系选择的相关因素,以构建我国企业绩效评价体系选择的框架,即:从下述关于经济环境、企业层次、企业战略思维模式、...As various publications were covered with articles whose keywords were EVA, Balanced Scorecard, Comprehensive Scorecard etc., most of those articles were based on the arrival of the knowledge-based economy and the importance of intellectual capital on modern economy. And then came to conclusion that enterprises should practice the latest performance evaluation system. Meanwhile in practice, the Ba...学位:管理学硕士院系专业:管理学院会计系_会计学学号:1512005130115

    Soul Expression in the Masterpieces—— On the Literature Criticism of Li Jianwu

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    李健吾的文学批评一直被看作是中国印象主义批评的典范,他深受西方印象主义批评特别是法朗士、雷梅托等人的批评理论的影响,强调批评的主观印象,重视直觉感悟、主体介入和情感动力。同时,李健吾又在较大程度上自觉地将中国传统文学批评与西方印象主义批评融汇在一起,他在既有传统文学积淀的基础上,广泛地吸收传统文学批评与西方文学批评的有益因素,创造性地形成了自己独具风格的文学批评体系。在文学批评的具体实践中,李健吾的文学批评始终没有离开自由主义文化这一特定的历史背景,并由此形成了“平等、独立、公正”的批评原则,以及强调对话与创造的批评主张,乃至一种独特的“随笔式”批评文体。李健吾的文学批评对当时以左翼文学为主流...The literature criticism of Li Jianwu has long been regarded as the model of impressionism criticism in China. Influenced deeply by western impressionism criticism theories, especially those of France and Lemaitre, he emphasizes subjective impression, intuition sentiment, individual intervention and sensibility motivation. Meanwhile, he consciously to some extent combines Chinese traditional liter...学位:文学硕士院系专业:人文学院中文系_文艺学学号:X20040100

    Isolation and Evaluation of Natural Product Antifoulants

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    随着国际社会对环境问题的日益关注及有机锡防污剂最终使用期限的日益接近,高效环保型海洋防污涂料成为发展重点,其中天然防污活性物质的筛选是研制高效环保型海洋防污涂料的基础。本研究主要结果如下: 1.通过防污活性筛选,对大戟科植物变叶木(Codiaeumvariegatum)和一种南海海绵(Axinellidaesp.)进行分离纯化,得到6个天然防污活性化合物,分别是5-十四碳烯酸-2,3二羟基丙基酯、茄尼醇、十一异戊烯醇、十二异戊烯醇、2-吡啶羧酸-4-羟基甲基酯、2-hydroxynephtenol,其中2-吡啶羧酸-4-羟基甲基酯首次从天然产物中分离得到。除茄尼醇外,其他5个化合物均为首次报...Along with the increasing concern about environment from the international society and the deadline of the ban on the usage of organotin compounds as antifoulants being increasingly close, the efficient and environmentally friendly antifouling coating has become important to be developed. The development of the efficient and environmentally friendly antifouling coating is based on the researches o...学位:理学硕士院系专业:医学院_药理学学号:2452011115334
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