Characterization of the chemoreceptor MCP18870 in Novosphingobium pentaromativorans US6-1

多环芳烃（PAHs）是一类由两个或两个以上的苯环以线性、角状或簇状排列的稠环化合物，主要来源于人类活动或能源利用过程，是重要的食品与环境污染物。生物降解是一种去除环境中多环芳烃的有效方法。细菌趋化性是菌体对环境的响应，主要包括对有利环境的趋附和对有害环境的避离。细菌趋化有利于细菌对底物的利用。研究表明，细菌的趋化性能够增强细菌在自然界中降解污染物的效果，已知一些种属的细菌对芳香族化合物有趋化能力。NovosphingobiumpentaromativoransUS6-1能以多种多环芳烃作为唯一碳源和能源生长，是一株良好的芳烃污染环境的生物修复菌。而该属细菌对芳香族化合物的趋化性研究却鲜有报道。...Polycyclic aromatic hydrocarbons (PAHs) are a large group of organic compounds comprised of two or more fused benzene rings bonded in linear, cluster, or angular arrangements, which originate from natural and anthropogenic sources. They have toxic effects on foods and environment. Biodegradation is the most efficient way to remove PAHs from the environment. Chemotaxis is the mechanism by which ba...学位：理学硕士院系专业：生命科学学院_微生物学学号：2162014115246

China’s inflation and economic growth correlation research

为了对当前全球通货膨胀和经济增长放缓的现象及趋势有全面的认识，本文对通货膨胀和经济增长两者之间的关系进行了研究。以分析中外通货膨胀和经济增长两者之间关系的不同理论为切入点，阐述了我国当前的通货膨胀现状，以及政府采取的调控政策后，出现的经济增长下滑的新问题并采取相应的政策调整的过程。应用几种计量方法和模型对经济增长率和通货膨胀率这两个指标关系进行测度和检验和实证研究，并分析和归纳了所得到的实证结果。最后，结合当前的经济形势，给出了经济政策建议。 通过运用平稳性检验和单位根检验、协整和误差修正模型、Granger因果关系检验和自回归条件异方差模型，对通货膨胀率和经济增长率之间的关系进行实证分析，...For postpones to the current whole world inflation and the economic growth the phenomenon and the tendency comprehension , this article have conducted the research to between the inflation and the economic growth relations. Take analyzes the different theory which between the Chinese and foreign inflation and economic growth both relates as the breakthrough point, elaborated our country current in...学位：经济学硕士院系专业：经济学院金融系_金融学(含保险学)学号：X20044102

Data Download and System Debug Based on On-chip RAM of FPGA using Serial Communication

本文开发了一种内嵌2kb rAM的uArT控制模块,可实现从PC机发送代码至控制模块内部的rAM中,再将代码读取至需要进行功能验证的系统,可以进行rAM数据下载与系统调试。控制模块利用开源的MC8051 IP核进行系统的功能验证,并成功进行了MOdElSIM下的仿真和fPgA与PC机的实际通信测试,效果良好。This paperpresents a 2 kB RAM embedded in the UART control module, can be send code from PC to the internal RAM of the control module, then the code read to the systems which need functional verification, this module can download data to the RAMand do system debugging.Control module using the open source MC8051 IP core for testing, and the result was good

不同初始分布向列相液晶电容特性的相场法研究

液晶盒内的液晶分子在不同的外加电场作用下重新排布,其极化指向发生改变,从而影响液晶盒整体的电学特性。本文考虑液晶材料的挠曲电效应,分析液晶盒的整体自由能表达式,包含弹性形变自..

新媒体时代历史虚无主义对高校思想政治工作的挑战及其对策研究

历史虚无主义借助新媒体技术对于主流意识形态话语权、高校思想政治工作产生了消极影响:冲击着高校意识形态工作的价值引导功能,一定程序上导致大学生信仰危机;增加了高校舆论场的复杂性,影响高校和谐稳定。为此,高校思想政治工作者必须占据新媒体斗争的主导权,掌握网络意识形态话语权;加强高校网络法治教育,建立网络行为监督机制;提升高校思想政治工作者素质,发挥教育者的正面引导作用。2016年度福建省中青年教师教育科研项目(高校思想政治教育研究专项)“新媒体时代历史虚无主义对高校思想政治工作的挑战及其对策研究”(项目编号:JZ160339)的研究成果之

Study on the Positive Interaction of Sports Culture between Fujian and Taiwan——A Case Study on Amoy and Quemoy Crossing

运用文献资料法、网络信息检索、社会调查等研究方法,对厦金横渡的起源、发展现状进行了分析,探讨了以厦金横渡为例的闽台体育文化交流存在的问题,在此基础上,对两岸体育文化良性互动的可持续发展给予相关建议。Research methods of web information retrieval and social investigation were used in the current study.The origin and present development situation of Amoy-Quemoy Crossing were analyzed and existing problems of sports exchanges between both sides of the Taiwan Straits were probed,and a series of suggestions for the sustainability of the interaction were advanced

The shape transformation of Si patterned-substrate in thermal decomposition of native oxide during vacuum annealing

利用超高真空化学气相淀积(uHV/CVd)系统,在不同的温度、环境氛围及脱O过程参与等条件下对全息法制备的二维周期图形SI衬底进行退火,通过原子力显微镜(AfM)进行表征与分析,研究真空高温脱O过程对图形衬底表面形态变化的影响。结果表明,真空环境使衬底表面的SI原子可以自由运动,脱O过程增强了SI原子在表面的迁移,温度会影响SI原子的扩散速率,3个因素的共同作用导致图形深度变浅,侧壁坡度变缓。此外,在周期图形台面的边缘,观察到环形有序分布的纳米SI岛。2D-period patterned Si substrate is annealed in ultra-high vacuum chemical vapor deposition(UHV/CVD)under variational conditions including different temperature,environment,thermal decomposition of native silicon oxide.The morphology properties of annealed patterned-substrate are obtained by atomic force microscopy(AFM).The effect of annealing parameters on shape transformation of Si patterned-substrate is studied.The results indicate that the Si atoms can diffuse freely on substrate surface in vacuum and the diffusion is enhanced during thermal decomposition of native oxide.The diffusion velocity is affected by temperature.These effects result in the decrease of the depth of pattern and gradient of side wall.In addition,ordered nanometer Si islands are formed on the mesa of patterned-substrate.国家自然科学基金资助项目(60336010;60676027);国家重点基础研究发展计划“973”资助项目(2007CB613404

Modeling of the combustion process of circulating fluldized bed boiler

针对具有多维非线性和纯滞后特性的循环流化床锅炉燃烧过程,采用基于PLS学习算法和OLS学习算法的径向基函数(RBF)神经网络进行建模研究。首先通过循环流化床锅炉仿真平台产生用于建模实验的网络训练数据和泛化数据,然后分别采用OLS算法和PLS算法进行网络训练和泛化研究,最后讨论了影响建模结果的算法参数及其选取方法,重点讨论了PLS算法的4个网络参数的影响和选取。与基于小波网络的建模实验比较,对具有复杂特性的循环流化床锅炉燃烧过程,采用RBF网络建模在保证建模精度的同时,算法参数的选取也较为方便易行。To get a online dynamic model of the combustion process of Circulating Fluidized Bed(CFB)Boiler which was difficult to be modeling because of its complex characteristics such as non-linear,time-delay,time-variation and multidimensional,the RBF net- work based on the PLS arithmetic and the OLS arithmetic was adopted.The data used as the network training samples and the data used in the generalization test of the network was produced by a CFB Boiler simulation system.The network training and generalization study was done by means of PLS arithmetic and OLS arithmetic individually.The arithmetic parameters,especially the parameters of PLS a- rithmetic were discussed to study their influence and selected methods.Contrasting to the online dynamic model of this process which was credited by the wavelet network,the model put forward in this paper keep the same precision and is more easily to select the pa- rameters in the modeling.福建省科技计划重点项目(2005H044