关键词： 区域物流体系   SWOT分析   区域经济  

摘要： 高效的区域物流体系,有助于促进区域经济的发展。文章采用SWOT分析法对湖南省物流业发展的内部优势与劣势、外部环境所带来的机遇与威胁进行了综合分析,为湖南省构建完整的区域物流体系提供理论依据。

摘要： 随着人们对於健康议题的日益重视，低成本、可携式检测装置的需求逐日升高，其中毛细管电泳晶片系统除被广泛研究外，亦已经成功进入市场。传统毛细管电泳晶片采用玻璃、高分子等材料制作，其制程繁复且昂贵，重复使用下也容易造成样本间的交互污染。因此，本研究室提出一低成本之线微流体系统，其可整合液体样本之电泳分离、电化学侦测甚至电喷洒游离质谱侦测，可应用於生医样本如人体全血中尿素氮及血糖之侦测，或可透过质谱进行食品样本分析。本文所发展之线微流体系统，可提供一创新、低成本、操作简单且高效能的方法，应用於生医及食品样本之快速检测，具有技术发展潜力与商业价值。

关键词： Cellulose  

ISBN: (纸本)9788895608389

摘要： Nanocellulose, which is a disintegration product of plant cellulose, has recently come to public attention because of its great mechanical properties combined with renewability and biodegradability. From an environmental point-of-view, nanocellulose has shown potential for applications in drinking water filtration, catalytic degradation of organic pollutants, etc. Nanocellulose prepared from renewable and biodegradable lignocellulosic materials is only considered green and environment-friendly when its obtaining method is also environmentally friendly. Thus, this procedure should be done by means of an eco-friendly multistep procedure. Towards this direction in this study, nanocelulose production that uses supercritical fluid-based processes for cellulose separation, e.g. supercritical CO2 explosion or organosolv assisted by CO2, were compared with conventional steam explosion and organosolv processes in terms of environmental, energetic and economic aspects using commercial simulator Aspen Plus. In addition, the implementation of nanocelulose production as part of an ethanol production process from lignocellulosic materials was also investigated. The results showed that the production of nanocellulose from the lignocellulosic residue of the ethanol production through enzymatic hydrolysis is very promising. On the other hand, this more economically attractive process design was when explosion-based methods (i.g. SO2-catalized steam explosion and supercritical CO2 explosion) were used during cellulose separation step. It was determined that over 95% of the energy needs for cellulose disintegration during nanocellulose production process come from heating requirements. However, it was also found that this latter step can be self sufficient in terms of energy usage when the undisintegrated cellulose is used as fuel into an energy generation system. It was estimated that a combined heat and power boiler can produce a heat surplus of 365 kWh, which can be redirected to t

关键词： IBM   智力竞赛   沃森   Watson   数据中心   Michel   微流体系统   主内存   输入输出   机械工程技术  

摘要： IBM先进微集成（Advanced Micro Integration）部门负责人估计生物是设计更高能效芯片的关键。201 1年,IBM制造的名叫沃森（Watson）的超级计算机在美国一个智力竞赛节目Jeopardy!中击败了两位顶尖的人类冠军。这让人们十分兴奋。

关键词： 以氮化镓铝/氮化镓为基底的高电子移动性电晶体   适合体   C-反应蛋白   微流体  

摘要： 因申请专利缘故，资料延后公开

关键词： 浊流沉积   安徽工业大学   黄河清   观沧海   于大海   环境学院   秋风萧瑟   重力流   环境流体力学   洪波  

摘要： 《观沧海》有云:东临碣石,以观沧海。水何澹澹,山岛竦峙。树木丛生,百草丰茂。秋风萧瑟,洪波涌起。对于大海的深不可测,数千年来人们一直想钻进它的"内心"深处一探究竟。近年,依托高科技测量手段,人类发现茫茫沧海居然像大陆一样,里面潜藏着一众高原峡谷、温泉、矿物质、能源及其它生物,它们组成了一个丰富绚烂而又复杂的海底世界。"

关键词： Agroacoustics   Marine vessels   Rivers   Sound pressure   Underwater sound  

摘要： Underwater noise associated with the installation and operation of hydrokinetic turbines in rivers and tidal zones presents a potential environmental concern for fish and marine mammals. Comparing the spectral quality of sounds emitted by hydrokinetic turbines to natural and other anthropogenic sound sources is an initial step at understanding potential environmental impacts. Underwater recordings were obtained from passing vessels and natural underwater sound sources in static and flowing waters. Static water measurements were taken in a lake with minimal background noise. Flowing water measurements were taken at a previously proposed deployment site for hydrokinetic turbines on the Mississippi River, where sounds created by flowing water are part of all measurements, both natural ambient and anthropogenic sources. Vessel sizes ranged from a small fishing boat with 60 hp outboard motor to an 18-unit barge train being pushed upstream by tugboat. As expected, large vessels with large engines created the highest sound levels, which were, on average, 40 dB greater than the sound created by an operating hydrokinetic turbine. A comparison of sound levels from the same sources at different distances using both spherical and cylindrical sound attenuation functions suggests that spherical model results more closely approximate observed sound attenuation.

摘要： Over last few decades, human being have been suffered from various infectious diseases. Lab-on-chip (LOC) technologies have played great role in revolutionizing the way in vitro medical diagnostics are done and provide easy to use, cost-effective miniaturized systems with faster analysis time, which can be used for near-patient or Point-Of-Care (POC) tests. The POC technology enables effective prevention and early detection of diseases and it helps to drastically deplete the mortality. Therefore, in this dissertation, I focused on the development of POC protein and nucleic acid biomarkers-based infectious disease diagnostic systems. Proteins and nucleic acids (DNA and RNA) are mostly used as biomarkers to identify the specific infectious diseases. The single specific biomarker in body fluids is, however, not sufficient to be used in clinical setting for the detection due to their low-concentration (few pg/ml). Unlike nucleic acid biomarkers, the amplification of protein biomarkers would be impracticable itself. Therefore, I have developed the Rotationally Focused Flow (RFF) method to enhance the sensitivity of protein biomarker based biosensor. The RFF was made by adding a less dense fluid, ethanol, to focus the target fluid near the sensor surface in a simple T-shape microchannel, which results in reducing the distance between target molecules and immobilized probe molecules. The focusing rate of target fluid can be controlled by changing volumetric fraction ratio between two fluids. I verified the formation of the RFF in the T-shaped microchannels using both computational fluid dynamics simulations and flow experiments with fluorescent beads. The sensitivity enhancement using RFF method was investigated with label-free silicon microring resonator sensor using the biotin-streptavidin interaction as a model system. Remarkably, the sensitivity of microring sensor with the RFF method was increased by 8-order of magnitudes compared to the single flow method where only

关键词： 断层气   水准形变   地震活动性   甘东南   流动观测网络布设技术  

摘要： 地壳流体与地震的孕育、发生有密切的关系。地震科学是一个完整的科学体系,流体科学与构造地质学、地球物理学、地震学等学科之间存在相互影响、相互依赖的密切关系。地下流体的发展依赖于观测台网的建设,观测台网更是地震监测预报与防震减灾的基础。因此选择具有一定观测基础的地震危险区,结合地球化学、地球物理以及构造地质等方法开展具有物理基础并以预报理论与机理探讨及预报实践相结合为目的的地下流体流动监测网络布设技术研究对流体学科具有重要的意义。本论文以甘东南地震重点危险区各主要断裂带为研究对象,通过高密度断层气浓度背景值探测,利用断层气浓度曲线形态对断层气场地异常特性进行分析,并通过断层气浓度强度空间分布特征进行断裂活动分段性研究的基础之上,重点研究区域深部流体活动特征与区域地质、地壳形变、地震活动性特征的耦合关系,并基于一定孕震模式和流-固耦合理论的机理探讨,从流体对断层介质的弱化及对断层蠕动及地震触发的角度,寻找区域活动断裂带的“流体与形变以及地震活动”的耦合段及断层气响应的灵敏点,科学规划一个具有一定物理预报思想的标准化断层气流动观测方案,并建立研究区域相关观测网络的雏形。本文提出以下几条具有一定物理预报思想的断层气流体流动监测台网布设的关键技术:(1)断裂带土壤气浓度曲线形态典型,峰值异常明显,背景值稳定测点,即相对“灵敏点”以及部分复测稳定点。(2)断裂分段性明显的分界点及“弱活动”段内部。(3)流体活动与地壳形变、地震活动性耦合关系较好的点。(4)断层陡坎、探槽的位置明确的点最好要有布设。(5)断层交汇部位。为了更好的对地震危险区跟踪监测,根据孕震“坚固体模式”,对断层气测线按孕震模式及一定的物理预报机理分为I、II、III级。最终在整个甘东南地区初步布设具有一定物理预报意义的测线共40条,其中I级测线31条,II级测线4条,III级测线5条。具体为:在西秦岭北缘断裂带初步共布设16条测线,其中I级测线13条,II级测线2条,III级1条;临潭—宕昌断裂带初步共布设8条测线,其中I级测线6条,II级测线2条,没有III级测线;对于甘东南其他地区,主要断裂带礼县—罗家堡断裂带初步布设7条测线,其中I级测线6条,没有II级测线,III级测线1条。东昆仑断裂带玛曲段布设I级测线3条;甘肃南部其他地区共布设6条测线,其中I级测线3条,没有II级测线,III级测线3条。通过以上工作,在甘东南地震重点危险区主要断裂带及地区初步建立了具有一定观测基础的,并以一定物理机制解释的,以预报理论与机理探讨及预报实践相结合的地下流体流动监测网络布设。这对提高甘东南地震地震危险区前兆监测台网的观测质量,增强空间分辨率,对今后全国地震重点危险区流体流动监测台网布设提供技术思路,并为我国地震预报、震情跟踪及防震减灾工作提供重要依据。

关键词： 移动互联网   心流体验   购买意愿  

摘要： 随着移动互联网的不断发展,移动终端的第一大上网终端设备地位更加牢固,用户通过手机等移动设备完成的移动商务类应用呈现出高速增长的态势,移动支付带动手机购物等商务类应用快速增长,移动互联网已深入到我们的日常生活工作中,全新移动互联网时代已成为不可忽视的大背景。移动互联网借助移动网络获得通讯及网络服务。移动互联网的简便性和多元性应用满足了用户的需求,使得网民上网时间持续增长。各种便捷的商务类应用吸引了大量用户加入,并使得用户对其产生很大的依赖性,改变了传统网络中用户的生活习惯和经济行为方式。移动互联网的随时随地性使用户时间碎片化,充分利用了用户的闲暇时间,并且用户很享受沉浸在这种闲暇环境中,更易于产生心流体验。越来越多的企业加入到移动互联网行业中,竞争越来越激烈,企业开始尝试各种方式以激发消费者购买意愿,产生更好的营销效果,但是消费者在移动互联网下通过移动设备进行消费时的心理状态和之前已经习惯的互联网购物下的心理状态是否一致,两种模式下购买意愿的影响因素是否相同,移动互联网特性是否影响购买意愿的产生,移动互联网背景下怎样激发消费者达到心流,从而激发购买意愿,这些问题反映了企业对新互联网时代下的购买意愿还较为陌生。因此,在移动互联网环境下探讨心流体验与购买意愿很有必要。本文基于文献研究构建模型进行论证,研究移动互联网特性、移动设备特性、消费者特性与心流体验的关系,心流体验与购买意愿的关系,及心流体验在移动互联网、移动设备特性、消费者特性与购买意愿之间的中介作用。利用问卷得到样本数据,运用SPSS进行因子、相关及回归分析,检验假设,进而得出结论。研究结果表明：改进的技术接受模型(TAM)对移动互联网环境下消费者购买意愿的研究是适用的,分析结果证明了TAM的解释能力;感知愉悦性与集中注意力显著作用于购买意愿。此外,感知有用性、易用性、即时性、网络规模和质量对购买意愿的影响也得到了证实;感知有用性、易用性、即时性、网络规模和质量、感知控制、社会影响、路径依赖、感知价值显著影响感知愉悦性;感知有用性、易用性、即时性、网络规模和质量、控制力、社会影响、感知价值对集中注意力均产生显著影响,但路径依赖未显著影响集中注意力。最后从“优化交易流程、改进呈现方式,是高消费者感知有用性和易用性”、“扩大网络规模、优化网络质量,提升消费者对即时性的满意度”、“提高用户体验,促进移动互联网社会影响和感知价值的提升”三个方面提出相关建议。