954 research outputs found
Studies on regulation of antibiotic production by introducing mutations into RNA polymerase and ribosomal protein L11 in Streptomyces spp.
筑波大学University of Tsukuba博士(農学)Doctor of Philosophy in Agricultural Science2002【要旨】thesi
Controlled Synthesis of Gold Nanoparticles and Their Electrochemical Application
近年来,纳米颗粒由于量子尺寸效应、小尺寸效应、表面效应和宏观量子效应表现出不同于宏观块状材料的光学、电子和催化等性能越来越受到人们的关注。金纳米粒子的物理化学性质与其尺寸及形貌密切相关,它们在光学、电学、传感技术及生物标记等领域具有广泛的应用前景。如何利用简易的化学方法合成尺寸和形状可控的金纳米颗粒并研究其性质、拓宽其应用领域是研究的热点。本文尝试用聚乙烯吡咯烷酮(PVP)作为包裹剂、乙二醇(EG)作为还原剂和溶剂在水热条件下还原氯金酸(HAuCl4)制备了具有规则形状的金纳米粒子。采用TEM、HRTEM、SEM、XRD、SAED、EDS和UV-vis等手段对所制备的金纳米颗粒的形貌、尺寸、晶...Gold nanoparticles are particularly important because their stability and fascinating optical properties can be tuned through control over particles size, shape, composition and morphology. It is believed that large-scale size- and shape-controlled metal nanoparicles will be conveniently produced through further optimization of these synthetic processes and expected to find intriguing applications...学位:工学硕士院系专业:医学院生物医学工程研究中心_☆生物医学工程学号:20044500
Study on Production Mode for Stone Enterprises in Nan’an City
世界建筑行业迅速地发展,促进了国际市场对天然石材的需求增长。中国石材资源非常丰富,石材产业已形成了专业化发展体系。中国已经成为世界首屈一指的石材生产和出口大国。在中国,福建省南安市是全国最大的石材产业基地,石材进出口总量位居中国第一。南安石材产业能够取得如此巨大的成就,与其生产模式有着莫大的关系。 本文运用战略管理、运营管理所学的知识,对当前的南安市石材行业中的企业生产管理模式进行了归纳和研究,对南安石材企业生产模式成功经验的有益总结,最后指出存在的问题并提出对策。通过SWOT分析工具分析了南安石材企业的经营发展战略。分析了现有的运作战略,阐述其优缺点,推出要重新规划运作战略的必要性,并阐述...With the rapid development of the construction industry in the world, demands for natural stone are growing in the international market. A professional development system has been formed in the Chinese stone industry. With an abundance of stone resources, China has become the most important country that products and exports productions of stone. The largest stone industrial base is located in Nan’...学位:工商管理硕士院系专业:管理学院工商管理教育中心(MBA中心)_工商管理硕士(MBA)学号:1792007115059
A Probe of Jiangsu Students in Japan during the Late Qing: Focus on Jiangsu Magazine
在历时长达近百年的中国近代留学史上,留日学生是其中最为耀眼的群体之一。这不仅因为留日学生人数最多,热潮持续时间最长,而且还因为其成就之卓越。留日学生对革命思想的介绍、引进和传播客观上推动了辛亥革命风潮的高涨,影响了清末大变革时局的发展进程。清末留日学生在鼓吹革命思想和身体力行进行革命实践方面无疑是近代中国留学生运动史上的佼佼者。在当时的历史条件下,是什么原因促使他们在异邦求学的同时进行积极的革命鼓吹和实践?留日环境提供给他们一个什么样的土壤从而能发酵出其他同代年轻人所没有或不敢有的思想与行为?他们中间的代表性人物思想如何异动,又如何进行革命实践?他们的思想动态及革命实践究竟对当时的国内环境产生...The project explores how did thinking mind of Jiangsu students in Japan changed in late Qing period by studying Jiangsu magazine published by them at that time in Japan. The movement of Chinese students in Japan has been a hot topic in history research all the time, which have brought a lot of fresh things to China and have changed China almost in every aspect since the late Qing time. These stude...学位:历史学硕士院系专业:人文学院历史学系_中国近现代史学号:1032007115160
Basis Functions in Data Mining
在传统的统计数据分析和数据挖掘中,数据一般是时间序列、截面数据或面析 数据,我们把这些数据看成离散的且有限的,于是导致采用计量经济模型的数据分 析依赖很多的假设条件,有较强的结构约束。此外,传统方法忽视了这些数据的部 分函数特征,且一般要求数据的观测点和观测次数相同,而在实际中收集到的数据 很多时候并不满足这个条件。 函数性数据分析是从函数角度对数据进行分析,把函数性数据看作一个整体, 不要求观测对象的观测点和观测次数相同。与传统的分析方法相比,函数性数据分 析具有其自身的很多优越性。 函数性数据分析目前已成为统计学术界研究的热点之一,涌现了大量相关的理 论和经验分析文章。但...In the traditional statistical analysis and data mining, the data is generally time-series, cross-section data or panel data. We view the data as separated and limited, so that the analysis of econometric model relies on a lot of assumptions with structural constraints. In addition, the traditional methods ignore some functional characteristics of the data, and usu- ally require the data in th...学位:经济学硕士院系专业:经济学院计划统计系_经济信息管理学学号:1542006115086
Research on the development of performing industry about state-owned art groups in Fujian province——based on setting up the Fujian performing art group
近年来,伴随着我国文化事业的持续繁荣和文化产业的不断发展,演出产业发展强劲,市场规模稳步拓展扩张,票房收入持续攀升提高,演出产品日益丰富多样,在整合演出资源、建立院线联盟、院团转企改制等方面取得了显著成效。演艺产业作为文化产业的重要组成部分地位逐年提高,被列为文化部“十二五”时期重点扶持行业。 福建作为我国传统文化大省,历史人文内涵深厚,山海民俗特色鲜明,在发展演艺产业上具有得天独厚的优势。如何将福建丰富的戏剧曲艺资源和悠久的艺术表现形式结合起来,有效转化为商业市场上的核心竞争力,打造完备演艺产业链,是省内众多国有文艺院团面临的重要课题。论文既是对相关理论政策研究的有益补充,也是对省内国有院...In recent years, along with the continued prosperity of cultural programs and continuous development of cultural industry, performance industry become stronger, the market scale expand steadily, box-office takings continue to rise, performance products are increasingly rich and varied, remarkable achievements have been made in the integration of production resources and establishment of alliance r...学位:管理学硕士院系专业:公共事务学院_公共管理硕士(MPA)学号:X200913616
Optical Fiber Voltage Sensor with New Fiber Component and Optical Path Design
光学电压互感器(OVT)是一种新型的电力互感器,它克服了传统电压互感器(VT)的许多缺点,在未来的电力系统中有着广阔的应用前景,光学电压互感器经过几十年的发展,已经形成了一套相关的理论,但是依然存在有待发展和完善的问题,本文的主要研究对象为光学电压互感器的核心部分即传感头,以后均称为光学电压传感器(OVS)。本文首先介绍了偏振光在晶体与双折射光纤中传输的基本理论,并在这个基础上分析了两种不同结构的光学电压传感器:一种是创新的运用高双折射光子晶体光纤制作的四分之一波片的透射式光学电压传感器,另一种是不采用四分之一波片的新型反射式横向调制电压传感器。本文分别分析了这两种不同结构的光学电压传感器的工...Optical Voltage Transformer (OVT) is a new kind of power transformer. OVT overcomes many drawbacks of traditional voltage transformer and can be widely used in power system in the near future. After years of development, it has formed a theoretical system. However, there are still some flaws and shortcomings. The main research object in the paper is the core of OVT, sensor probes, which is called ...学位:理学硕士院系专业:信息科学与技术学院电子工程系_无线电物理学号:2005130236
Numerical Study of Column Interference in Vortex Induced Motion on Multi-Column Floater
University of Tokyo(東京大学
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