基于CMOS APS高精度太阳敏感器

通过对CMOS APS的简要介绍以及它与CCD的性能比较,揭示出CMOS APS在太阳敏感器的研究发展方面所具有的优越性.在提出CMOS APS太阳敏感器一般方案的同时,对它进行了更进一步的探讨.并在探讨太阳敏感器视场和精度相互制约这一问题的过程中,结合CMOS APS各方面的优点,阐明了这一问题虽然在CCD太阳敏感器中难以解决,但在CMOS APS太阳敏感器中却可以得到有效解决.     

脱硫APS系统在1000 MW机组中的应用

通过宁海1 000 MW机组脱硫系统中实现APS系统的可行性分析,阐述脱硫APS系统的重要意义,总结了在实现脱硫APS系统过程中产生的问题和解决方法,表明了脱硫APS系统的实用性和可靠性,对其他机组脱硫APS系统的设计和调试具有参考价值。     

New hydrogels based on maleilated collagen with potential applications in tissue engineering

New hydrogels based on maleic anhydride (MA) modified collagen were prepared with the aim of overcoming the high degradation rate displayed by collagen that is not otherwise chemically crosslinked. Semi-interpenetrated matrices were obtained by free radical polymerization of maleilated collagen (CM) and 2-hydroxyethyl methacrylate (HEMA) in the presence of ammonium persulfate (APS) and N,N,N′,N′-tetramethylethylenediamine (TEMED) as initiating system. The resulting matrices (CMH) had a sharp decrease in degradation, when compared to pure collagen. FTIR and H¹ NMR spectroscopies were used to confirm the incorporation of MA on the collagen peptide chains. The final composition of CMH was found to be strongly dependent by the concentration of maleilated collagen. The morphology of the hydrogels was studied by Scanning electron microscopy (SEM) and the macro-gel structure was confirmed. Water uptake of the synthetised hydrogels is influenced by both composition and the porosity of the matrices.     

Application of electrophoretic deposition for inner surface coating of porous ceramic tubes

The direct coating of a nano-porous alumina layer on the inner surface of micro-porous alumina tubes was performed by electrophoretic deposition (EPD). A thin layer of polypyrrole (Ppy) was synthesized on the inside wall of the porous tubes by the chemical polymerization of pyrrole (Py) to give the wall electric conduction for the EPD electrode. The bimodal suspension of alumina powders with 0.6 μm and 30 nm average particle sizes was selected to control the nano-porous structure. The thickness of the coating layer was controlled by altering the applied voltage and deposition time. The interfacial connection of the coated layer and the substrate was observed by SEM before and after sintering. The pore size of the coated layer was characterized by its pore size distribution.     

干熄焦EI系统及红焦装入线的指令解析与改进设想

干熄焦系统红焦装入线是自动化运行过程,各种单体设备运行是依靠各种指令和指令交换来实现自动控制的,对于从事干熄焦电气或初学者来说,如果不熟知干熄焦EI系统红焦装入线的各种指令及指令交换的过程,就很难判断自动模式下红焦装入线因指令错误造成的生产中断以及故障的原因,这种错误的指令常常能够自动消失或复位,在现场很难被捕捉到,因此本文将重点解析干熄焦系统红焦装入线上各单体设备的各种指令。     

火电机组风烟系统智能控制模块设计与应用

风烟系统是火电机组的重要组成部分。为提高火电机组智能化水平,对风烟系统智能控制的需求进行了分析,设计了智能启动、智能运行、智能停运3大功能组及多个子功能组。各(子)功能组均采用模块化设计,能适应正常运行、检修和故障等各种工况,紧急情况下手动控制优先。仿真及现场应用表明,在无人工干预的情况下,能实现整个风烟系统启动、运行、停运全过程的自动控制,炉膛压力等重要参数控制平稳,提高了火电机组安全性能,减轻了运行人员劳动强度。     

等离子喷涂CuAl/hBN的表面氧化及与钛合金的界面渗透性能

采用等离子喷涂设备在钛合金表制备了CuAl/hBN涂层,对该涂层的显微结构、表面氧化及与钛合金的界面渗透性能进行了研究,结果发现：CuAl/hBN涂层呈典型的层状结构,各层间结合良好。涂层经800 ℃恒温氧化30 min后,表面从外到内分为Cu和CuO、CuO、CuO和Al2O3三层,涂层中的Cu、Al均向钛合金基体渗透,渗透深度约为5~10 μm,并在富Cu区域中形成了Ti-Cu合金。     

自启停系统人机接口界面设计与研究

以广东海门电厂2台1 000 MW 超超临界压力机组实施的机组自启停系统(automatic plant startup and shutdown system,APS)项目为实例,说明APS的组织结构、逻辑组态和断点设置,其中重点介绍了APS人机接口界面的层次结构和具体设计情况.APS人机接口界面的设计要求明朗、清晰和美观实用,以方便工作人员进行监控及操作.     

Preparation and Characterization of Aminopropylsilatrane Endcapped Polyimide Films

γ-Aminopropylsilatrane (APS)/γ-aminopropyltriethoxysilane (APTES) end capped polyimide films were prepared by thermal imidization method. Polyamic acid (PAA) was prepared by the reaction of 4,4′-oxydianiline (ODA) with 4,4′-oxydipthalicdianhydride (ODPA) using dimethylacetamide (DMAc) as solvent. The end group of prepared PAA was capped by different percentage of APS/APTES. The polyimide films were characterized by different advanced instrumental techniques for chemical/physical properties. APS end capped PI films show better thermal and mechanical properties and air permeability than APTES end capped polyimide films.     

浅议分组传送网(PTN)组网设计的要点

文章以分组传送网(PTN)在组网设计中的实际应用入手,重点分析了PTN网络在建设中需要考虑的一些主要问题.为组建适合中国移动城域网多业务承载平台,文章在PTN网络构架、保护方式、同步、网管DCN等多个方面,阐述了一些个人观点,提出了切实可行的实施方案..