3,915 research outputs found
Analysis of water consumption using a regional input–output model, model development and application to Zhangye City, Northwestern China
Spatial and temporal distribution of microphytobenthic composition and primary production and their controlling factors in subtropical intertidal areas
作为近岸潮间带中最主要的初级生产者,底栖微藻是滩涂初级生产力的主要贡献者。对底栖微藻初级生产力及其调控机制的研究,主要集中于中纬度温带地区,而对亚热带生态系统的研究则较少。本论文针对“亚热带潮间带底栖微藻初级生产力及其调控因子”这一科学问题,于2014年5月至2016年3月,分别于厦门湾、漳江河口区及漳江口红树林保护区,应用显微镜、高效液相色谱及红外气体分析仪,研究了潮间带不同类型的光滩底栖微藻种类组成、光合色素组成及初级生产力的时空分布特征,同时探讨了影响底栖微藻群落组成和初级生产力分布变化的环境因子,初步分析了不同潮间带底质滩涂底栖微藻初级生产力,并初步估算了底栖微藻对群落净生产的贡献,结...As the main primary producer, microphytobenthos contribute greatly to the benthic primary production. Research on microphytobentic primary production and its regulating factors were mainly done in temperate areas, while little is known in subtropical areas. This thesis aims at “Distribution and regulatory factors of microphytobenthic primary production in subtropical areas”. Spatial and temporal d...学位:理学硕士院系专业:海洋与地球学院_海洋生物学学号:2232013115142
Energy transfer process in gas models of Lennard-Jones interactions
We perform simulations to investigate how the energy carried by a molecule
transfers to others in an equilibrium gas model. For this purpose we consider a
microcanonical ensemble of equilibrium gas systems, each of them contains a
tagged molecule located at the same position initially. The ensuing transfer
process of the energy initially carried by the tagged molecule is then exposed
in terms of the ensemble-averaged energy density distribution. In both a 2D and
a 3D gas model with Lennard-Jones interactions at room temperature, it is found
that the energy carried by a molecule propagates in the gas ballistically, in
clear contrast with the Gaussian diffusion widely assumed in previous studies.
A possible scheme of experimental study of this issue is also proposedComment: 5 pages,3 figur
尼罗罗非鱼TCP-1-beta和TCP-1-eta的分子特征及其低温诱导表达
为了研究尼罗罗非鱼耐寒性状的分子基础并为耐寒品种选育提供参考,研究从尼罗罗非鱼中克隆了HSP60家族TCP-1-beta和TCP-1-eta基因并对其在低温诱导下的表达特征进行了分析。尼罗罗非鱼TCP-1-beta cDNA长度为1755 bp,包括1605 bp的完整开放阅读框,编码534个氨基酸;尼罗罗非鱼TCP-1-eta cDNA长度1651 bp,包括1638 bp的完整开放阅读框,编码545个氨基酸。与其他物种同源基因的蛋白序列比对结果显示,TCP-1-beta和TCP-1-eta蛋白在物种间同源性很高,且都具有保守的ATP结合结构域等,预示其在物种间功能的保守性。实时荧光定量PCR结果表明:TCP-1-beta和TCP-1-eta在各组织中呈遍在表达,但在肌肉中表达量最高;诱导温度从22℃降至12℃,不同低温诱导48h后TCP-1-beta和TCP-1-eta均呈上调表达,在18℃时表达开始上调,随着低温胁迫程度加强,表达上调幅度增大,至12℃时表达量达到最高,TCP-1-beta和TCP-1-eta上调幅度分别达到常温的12.2倍和10.7倍。这些结果预示在尼罗罗非鱼中,TCP-1-beta和TCP-1-eta是潜在的耐寒相关基因
Analysis of Pre- IPO Financial Normalization of Architectural Decoration Industry Company ——Take RDK Company as an example
随着国家经济快速发展,城镇化进程加快,房地产行业对GDP的贡献逐年上升,建筑装饰行业也显现出巨大的发展潜能。限购令、央行加息以及提高公积金贷款利率等楼市调控政策的出台,一定程度上放缓了房地产市场扩张的脚步,然而建筑装饰行业依托于商业地产的更新换代,依然需求旺盛。同时随着建筑装饰行业的市场化程度越来越高,竞争越来越激烈。目前,在我国建筑装饰行业市场上,有合资公司、股份制公司、外资等多种企业组织形式,形成多元化的局面。 2006年苏州金螳螂建筑装饰股份有限公司在深交所上市,成为建筑装饰行业第一家上市的公司,2015年,苏州柯利达装饰股份有限公司、上海全筑建筑装饰集团股份有限公司、深圳市奇信建设集...With the rapid development of our country's economy, the speeding up of urbanization, China's sustained development of the real estate and construction, building decoration industry has shown the enormous development potential. However, accompanied by restricting the third set of mortgages, the issuing of purchase restrictions, the central bank’s policy of raising the interest rate as well as incr...学位:会计硕士院系专业:管理学院_会计硕士学号:X200915708
Stakeholder Communication and Coordination Management of Zhangzhou Ancient City’s Protection Project at Pre-Construction Stage
古城保护建设项目由于项目前期的产出不确定性高,参与方极易产生众多矛盾,各方利益的角逐可能促使最终的建设成果丧失了原来前期规划的古城韵味。本文的研究目标是如何有效地在古城建设施工前期进行干系人的沟通与协调管理,实现社会和市政府“古城建设,修旧如旧,有机更新”的要求,为今后类似的古城保护建设工程前期管理提供可参考和借鉴的方法。 本文的研究方法是采用个案分析法,针对漳州古城建设工程施工前出现的问题进行分析和归纳,总结出行之有效的管控机制。研究内容主要是以建设工程的前期管理特征为基础,结合沟通和协调管理理论的发展和现状,分析出古城建设项目前期存在组织架构不合理、缺少反馈、内外部协调渠道混乱、协调路径...Ancient city’s protection development may lose the original feeling at pre-engineering stage, due to the great uncertainty of project output, contradictions and different interests pursued by all participants. This dissertation aims to study on how to communicate and coordinate effectively at the project early stage of ancient city protection and development, to achieve the requirement of "ancient...学位:工程管理硕士院系专业:管理学院_工程管理硕士学号:1772014115109
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