2,682 research outputs found
A Business Plan for A Environmental Protection Company
随着国家对于大气污染物中SO2治理要求的提高,湿法脱硫设施作为电厂必备的主流环保设施大面积集中投运。由此产生的脱硫废水的严重的环境污染问题,开始得到国家有关部门高度重视! 电厂废水零排放是国家环保政策的一贯要求,在国家、地方环保法规以及电力行业的设计规程中,均有明文规定。但是,由于脱硫废水浊度大、重金属含量多,尤其氯离子高达20000mg/l,行业里一直没有适合产业化推广的治理技术。 本创业计划书,共分十章。前三章解释开展本项目的目的,第四章介绍公司拟研发的技术和产品,第五章测算市场的空间,并确定市场的定位,第六章到第七章分别从商业模式、营销等两方面研讨经营策略,第八章制定出企业发展规划,...With the development of the countries for atmospheric pollutants SO2 control requirements increase, mainstream environmental protection facilities, a large area of wet desulphurization facilities as power plant essential operation focused on. The serious environmental pollution problem caused by the desulfurization waste water, began to be highly valued by the relevant departments of the state! T...学位:工商管理硕士院系专业:管理学院_工商管理硕士(工商管理硕士)学号:S20031510
Research on Urban-Rural Verkehr, Human Development and Chinese Urban-Rural Income Gap
刚过去的“十二五”时期中国经济总量稳居世界第二,人均国内生产总值增至7654美元。改革开放以来,我国经济发展成果世界瞩目,居民生活水平和质量得到显著提高。然而在经济高速发展的同时,我国城镇和农村二元经济结构愈发明显,特别是收入差距逐渐扩大,虽然近年来略有下降,但仍处于有风险的差距水平。城镇和农村收入差距导致了一系列的社会问题,农村消费不足、城乡心理失衡、二元特征更加明显等等。党和政府高度重视城镇和农村差距问题,在“十三五”规划中不仅提出了国内生产总值和城乡居民人均收入比2010年翻一番的总体目标,同时强调要推动城镇和农村协调发展,缩小城镇和农村的收入差距。要实现城乡协调发展,就得找到症结所在,...China has been remaining the largest economy stably over the Twelfth Five-Year Plan period. Though China has the largest population, Chinese per capita income has increased to about 7800 dollars. Since Chinese Reform, Chinese economic development has been drawing worldwide attention for people’s living standard and quality are improved notably. Meanwhile, the characteristic of dual economic struct...学位:经济学博士院系专业:经济学院_政治经济学学号:1532013015399
Research on the Government Decision Support System Based on Modeling and Simulation
随着网络信息技术的发展,随着大数据时代的到来,政府在做公共决策时将面对海量数据和复杂系统,决策难度将直线上升。为了提高政府的行政能力、管理水平和决策准确性,将决策支持系统及建模仿真等新技术引入政府成为必然趋势。基于建模仿真的政府决策支持系统,可以利用电子政务综合数据仓库中存储的大量数据,考虑决策者的偏好需要,并且充分把握决策问题的特点性质,从而使仿真模型更加真实、仿真结果更符合实际情况,通过模拟预演和不断优化来提高政策制定的科学性和可行性。 本文分为五大部分:第一是绪论部分,主要对研究的背景和意义进行论述,并梳理了相关研究文献,明确了研究的思路和方法;第二是政府决策支持系统的研究进程与发展,...With the development of information technology and the arrival of big data era, government will make public policy decisions in the face of massive data and complex causal, so the difficulty of making decisions will shoot up. In order to improve the government's ability, management and decision-making accuracy, Decision Support Systems and Modeling and Simulation, and other new technologies will b...学位:管理学硕士院系专业:公共事务学院_行政管理学号:1392013115030
A Study of the Relevance between the Public Service Motivation of College Students and the Choice of Government Department as Career Intention: A Case Study of Masters in Xiamen University
大学生为什么选择加入政府部门?美国公共行政学者詹姆斯•佩里曾提出一个论点:公共服务动机越强的个人,越倾向于选择加入公共部门。大学生选择政府部门作为职业意向究竟是基于其较强的公共服务动机还是因为其他考量呢?本研究以厦门大学硕士研究生为样本,以公共服务动机和职业价值观变量作为自变量,以厦门大学硕士研究生的职业意向作为因变量,结合实证分析结果,对厦门大学硕士研究生公共服务动机与其选择政府部门作为职业意向的关系进行了探讨。 全文共分为五个部分: 第一部分为导论,阐述了本文的研究背景,对公共服务动机、公共服务动机与职业意向的关系、职业价值观与职业意向的关系等相关文献进行了较为全面的回顾和...Why do college students choose to join government department? Perry James has argued that theindividuals with a high degree of public service motivation tend to seek membership in a public agency. Do the college students who choose government department as a career intentionis based on strongpublic service motivation or other considerations? This study takes the masters in Xiamen University as a s...学位:管理学硕士院系专业:公共事务学院_行政管理学号:1392014115045
基于量子级联激光器的ADN基液体发动机稳态燃烧CO特征浓度的实验测量
二硝酰胺铵(AND)作为一种绿色无毒推进剂已在固体推进剂以及液体推进剂领域得到一定程度的应用,是未来化学推进技术的一个新方向.目前我国正处于ADN基液体推进剂研究的起始阶段,对于其燃烧反应过程的研究是当前的一个研究重点.由于ADN基液体推进剂催化分解及燃烧反应过程复杂,相关的实验结果国内外公开文献发表较少,因此有必要开展ADN基液体发动机催化分解及燃烧反应的实验研究.本实验采用基于量子级联激光器的吸收光谱诊断技术,对ADN基液体发动机燃烧室内燃烧过程进行探究.CO是ADN基液体推进剂催化分解及燃烧反应的特征产物之一,通过测量ADN基液体发动机典型工况下CO的特征浓度,可以定量获得ADN基发动机...</p
Spatial Equity Evaluation of Urban Public Transport Resources Allocation Based on New Data Environment:A Case Study of Xiamen City
公平性问题在不同时代、不同文化、不同宗教信仰与政治体制下,内涵与标准各不相同,对于公平的研究领域也涉及到人类社会的方方面面,其中就包括公共服务的公平性问题。在公共服务的公平性研究领域中,作为公共服务物质载体的公共服务设施具有很强的空间属性特征,因此公共服务公平性的研究更多将着眼点放在公共服务设施空间公平性的研究上。城市交通运输系统作为重要的公共服务设施,是整个社会经济发展系统中的重要组成部分,为物质资源的流通以及全体社会成员参与各类社会经济活动及社会交往活动提供基础条件与机会,因此交通公平一直是公共服务公平性研究的热门领域。 在国家提出“基本公共服务均等化”发展战略的大背景下,通过对国内外有...In different times, different cultures, different religions or political systems, the connotation and standards of equity is different. The research of equity involves all aspects of human society, including the equity of public service. In the field of public service equity research, as the material carrier of public service, public service facilities have strong spatial attribute characteristics...学位:工学硕士院系专业:建筑与土木工程学院_城市与区域规划学号:3082014115173
Registration and Management of Pesticide & Fertilizer Mixtures in the United States
本文通过对相关网站资料、文献的查阅、分析,初步勾勒出美国EPA及部分州对药肥产品管理的现行基本做法,为中国建立和形成对药肥产品的管理规范提供借鉴。This article outlined the basic practices for the regulation of pesticide & fertilizer mixtures taken by the United States EPA and some federal states through collecting information from the related websites and literature and making an analysis. Finally, the reference was provided to establish and form a regulation system for pesticide & fertilizer mixtures in China
Nitric oxide enhances phosphate nutrition in rice seedlings by regulating phosphate uptake and translocation
磷是生物体所必需的大量元素之一,其参与构成的化合物、生物大分子广泛参与到各种生命活动当中,有重要的生理功能。但是土壤中可供植物直接利用的磷含量十分的有限,致使磷成为植物生长和粮食产量的主要限制因素。因此,研究植物磷积累的分子机制,寻找促进植物磷营养的方法有重要的意义。 一氧化氮(NO)作为一种气体信号分子,参与调节植物多种代谢活动。虽然一氧化氮参与植物非生物胁迫的调节作用已经得到证实,但是其对磷吸收的调节机制尚不明确。本试验以水稻为材料,通过施加NO供体硝普钠(sodiumnitroprusside,SNP)、一氧化氮合成酶(nitricoxidesynthetase)抑制剂(Nw-nitr...As one of the most important macro nutrient for biology, phosphorus composes many materials showed a widely biological function in metabolism. In the soil, only phosphate can be used by plants directly and exists in a shortage, leaving phosphate one of the limits for plant growth and yield. Therefore, it is very important to study the molecular mechanism of phosphate uptake and having scientific s...学位:理学硕士院系专业:环境与生态学院_生态学学号:3312014115166
Some Microbial Grow to Influence the Nitrogen Content in the Aging Process of Tobacco
烟草在加工成卷烟之前的复烤后的储藏、发酵和陈化过程统称醇化过程。分析醇化过程中生物碱及氮含量的变化,为有效防控微生物生长提供依据。实验方法 1.总生物碱的测定:YC/T 160-2002中国烟草及烟草制品总生物碱的测定连续流动法2.氮含量的测定:YC/T161-2002中国烟草及烟草制品总氮的测定连续流动法实验结果取8个正常烟叶样品作对照,霉变烟叶与正常烟叶比较值:实验显示微生物生长导致烟叶中生物碱含量降低,而总氮含量上升,生物碱降低的百分比基本上与总氮上升的百分比近似。证明烟叶中的部分微生物是以通过降解生物碱,吸收生物碱中的碳、氢、氧,释放氮元素为代谢途径的
Detection of incoherent broadband terahertz light using antenna-coupled high-electron-mobility field-effect transistors
The sensitivity of direct terahertz detectors based on self-mixing of
terahertz electromagnetic wave in field-effect transistors is being improved
with noise-equivalent power close to that of Schottky-barrier-diode detectors.
Here we report such detectors based on AlGaN/GaN two-dimensional electron gas
at 77~K are able to sense broadband and incoherent terahertz radiation. The
measured photocurrent as a function of the gate voltage agrees well with the
self-mixing model and the spectral response is mainly determined by the
antenna. A Fourier-transform spectrometer equipped with detectors designed for
340, 650 and 900~GHz bands allows for terahertz spectroscopy in a frequency
range from 0.1 to 2.0~THz. The 900~GHz detector at 77~K offers an optical
sensitivity about being comparable to a commercial
silicon bolometer at 4.2~K. By further improving the sensitivity,
room-temperature detectors would find applications in active/passive terahertz
imaging and terahertz spectroscopy.Comment: 4.5 pages, 5 figure
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