Research on Organization and Management Model of X Airport Reclamation Project

政府投资的城市基础设施建设工程项目规模不断增大，涉及专业领域不断增加，干系人关系也越发复杂，建设工期越来越长而节点控制要求却越来越严格，这些超大型项目的不断涌现给项目管理工作带来了新的考验。因此，如何在复杂条件下保证项目目标的顺利实现成为了工程管理的难点。 本文针对上述问题，以X机场项目前期的填海造地工程为研究对象，针对目前进度滞后的现状，通过项目组织管理与实施模式的研究来尝试寻找优化空间，研究和制定一套相对合理的、更有利于保证项目目标实现的进度控制的组织结构体系。文章借鉴参考了国内外的政府投资项目组织管理模式的经验，通过分析当前存在问题的决策、沟通、合同、资金等影响因素，提出投资、设计、施...The government investment infrastructure projects become more complicated because of involvement of variety industries, mega project scale and numerous stakeholders. The construction period becomes longer, but the control requirement on node is increasing strict. The growing emergence of mega projects brings new challenge to project management. Therefore, how to guarantee smooth realization of pro...学位：工程管理硕士院系专业：管理学院_工程管理硕士学号：1772014115110

MeAPO-11的合成及其在苯酚羟基化反应中的催化性能

采用气相转移法合成了一系列杂原子磷铝分子筛MeAPO-11(Me为Cu、Fe、Zn、Mn),并利用X射线衍射(XRD)、扫描电子显微镜(SEM)、热重-差热分析(TG-DSC)、漫反射紫外-可见光谱(DR UV-Vis)和等离子发射光谱(ICP)对其进行了表征,同时考察了它们对苯酚羟基化反应的催化性能。结果表明,采用气相转移法合成的MeAPO-11分子筛具有较高的结晶度和稳定性,杂原子可以通过同晶取代Al进入分子筛骨架。CuAPO-11具有较高的苯酚羟基化反应催化活性;MnAPO-11催化苯酚羟基化反应中,邻苯二酚选择性较对苯二酚选择性高许多

产后抑郁的心理护理研究进展

产后抑郁严重影响母婴身心健康,本文对产后抑郁心理护理的研究现状,如生物疗法(治疗性睡眠剥夺、光照疗法)、心理干预(建立社会心理支持系统、情志相胜疗法、行为激活疗法、认知行为疗法、人际心理治疗、团体心理干预)、运动干预(有氧运动、拉伸运动、瑜伽和在教练指导下的运动)等进行综述,旨在为减少女性产后抑郁提供借鉴.</p

桂枝茯苓丸抗大鼠慢性心衰的实验研究

目的:研究桂枝茯苓丸对异丙肾上腺素诱导大鼠慢性心衰模型的影响,并初步探讨药物对AngⅡ、TGF-β相关因子的影响.方法:健康SD大鼠60只,体重180~220 g,按体质量随机分为6组,即空白对照组、模型对照组、桂枝茯苓丸1.125 g/kg剂量组、桂枝茯苓丸2.25 g/kg剂量组、桂枝茯苓丸4.5 g/kg剂量组和阳性药物对照组(普萘洛尔).建立异丙肾上腺素致大鼠慢性心衰模型,并给予相应药物治疗15 d.末次给药后12 h,麻醉后取血,分别检测血清AST、ALT、CK和LDH水平.取心脏,固定,采用免疫组化方法分别检测心肌TGF-β和AngⅡ的表达水平.结果:与模型对照组相比,桂枝茯苓丸能明显或部分降低ALT的水平(P<0.05~0.01);抑制TGF-β、AngⅡ的表达(P<0.01~0.05).结论:桂枝茯苓丸具有一定的减轻慢性心衰大鼠心肌损伤的作用,其心肌保护机制可能与TGF-β、AngⅡ的降低有关

Self-adaptive electronic contact between graphene and semiconductors

<div class="aip-paragraph">Understanding the contact properties of graphene on semiconductors is crucial to improving the performance of graphene optoelectronic devices. Here, we show that when graphene is in contact with a semiconductor, the charge carrier transport into graphene leads to a self-adaptive shift of the Fermi level, which tends to lower the barrier heights of the graphene contact to both <em class="emphitalic">n-</em> and <em class="emphitalic">p-</em>type semiconductors. A theoretical model is presented to describe the charge carrier transport mechanism and to quantitatively estimate the barrier heights. These results can benefit recent topical approaches for graphene integration in various semiconductor devices.</div

Charge transport mechanisms of graphene/semiconductor Schottky barriers: A theoretical and experimental study

<span lang="EN-US" style="font-family: &quot;Calibri&quot;,&quot;sans-serif&quot;; font-size: 10.5pt; mso-bidi-font-size: 11.0pt; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"><font color="#000000">Graphene has been proposed as a material for semiconductor electronic and optoelectronic devices. Understanding the charge transport mechanisms of graphene/semiconductor Schottky barriers will be crucial for future applications. Here, we report a theoretical model to describe the transport mechanisms at the interface of graphene and semiconductors based on conventional semiconductor Schottky theory and a floating Fermi level of graphene. The contact barrier heights can be estimated through this model and be close to the values obtained from the experiments, which are lower than those of the metal/semiconductor contacts. A detailed analysis reveals that the barrier heights are as the function of the interface separations and dielectric constants, and are influenced by the interfacial states of semiconductors. Our calculations show how this behavior of lowering barrier heights arises from the Fermi level shift of graphene induced by the charge transfer owing to the unique linear electronic structure. (C) 2014 AIP Publishing LLC.</font></span

原料压榨制油的预处理方式对核桃多肽功能特性 和ACE抑制活性的影响Effect of raw material pretreatment method in oil pressing on functional characteristics and ACE inhibitory activity of walnut polypeptide

旨在研究原料压榨制油的预处理方式对核桃多肽性质的影响。对核桃仁分别进行未预处理、去衣、焙烤预处理后，进行压榨提油，以提油后的饼为原料，经正己烷脱脂，碱性蛋白酶酶解制备核桃多肽，测定核桃多肽的功能特性和ACE抑制活性。结果表明：与未预处理、焙烤预处理比较，去衣预处理的核桃多肽的持水性(50 ℃，5.11 g/g)、吸油性(50 ℃，3.25 g/g)、乳化性(pH 9.0,6257%)、乳化稳定性(pH 9.0,84.51%)、起泡性(pH 9.0,117.49%)及ACE抑制率（63.04%）最高。综上，以去衣预处理压榨制油后的核桃饼为原料制备的核桃多肽具有良好的功能特性和ACE抑制活性。The aim was to study the effect of pretreatment methods of raw material pressing for oil on the properties of walnut polypeptide. The walnut kernels were untreated, peeled and roasted respectively,then pressed to extract oil.The cake after oil extraction was defatted by n-hexane and hydrolyzed by alkaline protease to produce walnut polypeptide, and the functional properties and ACE inhibitory activity of walnut polypeptide were determined. The results showed that compared with no treatment and roasting pretreatment, walnut polypeptide obtained by peeling of raw material had the highest water holding capacity (50 ℃, 5.11 g/g), oil absorption (50 ℃,3.25 g/g), emulsifying ability (pH 9.0, 62.57%), emulsifying stability (pH 9.0, 84.51%), foaming ability (pH 9.0, 117.49%) and ACE inhibitory rate( 63.04%). In conclusion, the walnut polypeptide prepared from walnut cake after peeling and pressing for oil production had good functional properties and ACE inhibitory activity