Potential Application of Adsorptive Media to Enhance Phosphorus Uptake in Stormwater Basins and Wetlands at Lake Tahoe : literature review. Report to the University of California Davis Tahoe Research Group

Phosphorus removal by wetlands and basins in Lake Tahoe may be improved through designing these systems to filter storm water through media having higher phosphorus removal capabilities than local parent material. Substrates rich in iron, aluminum and calcium oftentimes have enhanced phosphorus removal. These substrates can be naturally occurring, byproducts of industrial or water treatment processes, or engineered. Phosphorus removal fundamentally occurs through chemical adsorption and/or precipitation and much of the phosphorus can be irreversibly bound. In addition to these standard media, other engineered substrates are available to enhance P removal. One such substrate is locally available in Reno and uses lanthanum coated diatomaceous earth for arsenate removal. This material, which has a high positive surface charge, can also irreversibly remove phosphorus. Physical factors also affect P removal. Specifically, specific surface area and particle shape affect filtration capacity, contact area between water and the surface area, and likelihood of clogging and blinding. A number of substrates have been shown to effectively remove P in case studies. Based upon these studies, promising substrates include WTRs, blast furnace slag, steel furnace slag, OPC, calcite, marble Utelite and other LWAs, zeolite and shale. However, other nonperformance factors such as environmental considerations, application logistics, costs, and potential for cementification narrow the list of possible media for application at Tahoe. Industrial byproducts such as slags risk possible leaching of heavy metals and this potential cannot be easily predicted. Fly ash and other fine particle substrates would be more difficult to apply because they would need to be blended, making them less desirable and more costly to apply than larger diameter media. High transportation costs rule out non-local products. Finally, amorphous calcium products will eventually cementify reducing their effectiveness in filtration systems. Based upon these considerations, bauxite, LWAs and expanded shales/clays, iron-rich sands, activated alumina, marble and dolomite, and natural and lanthanum activated diatomaceous earth are the products most likely to be tested for application at Tahoe. These materials are typically iron, calcium or aluminum based; many have a high specific surface area; and all have low transportation costs. (PDF contains 21 pages)

Soluble Angiopoietin Receptor Tie-2 In Patients With Acute Myocardial Infarction And Its Detection By Optical Protein-Chip

The Tie-2 receptor has been shown to play a role in angiogenesis in atherosclerosis. The conventional method assaying the level of soluble Tie-2 (sTie-2) was ELISA. However, this method has some disadvantages. The aims of this research are to establish a more simple detection method, the optical protein-chip based on imaging ellipsomtry (OPC-IE) applying to Tie-2 assay. The sTie-2 biosensor surface on silicon wafer was prepared first, and then serum levels of sTie-2 in 38 patients with AMI were measured on admission (day 1), day 2, day 3 and day 7 after onset of chest pain and 41 healthy controls by ELISA and OPC-IE in parallel. Median level of sTie-2 increased significantly in the AMI patients when compared with the controls. Statistics showed there was a significant correlation in sTie-2 results between the two methods (r=0.923, P0.01). The result of this study showed that the level of sTie-2 increased in AMI, and OPC-IE assay was a fast, reliable, and convenient technique to measure sTie-2 in serum.

Development of catalytic methane reforming systems integrating hydrogen selective PdCu membrane modules

En la presente tesis doctoral se ha estudiado la integración del proceso de producción de hidrógeno con su purificación mediante el empleo de membranas selectivas de hidrógeno. La producción de hidrógeno se realiza empleando catalizadores no convencionales de níquel soportado sobre magnesia y alúmina en un reactor catalítico. Se analiza la actividad de los catalizadores y la producción de hidrógeno mediante distintos procesos con metano como son la oxidación parcial catalítica (OPC), OPC húmeda y reformadoLa purificación de hidrógeno se realiza en un módulo provisto de una membrana selectiva de hidrógeno de PdCu depositado en un soporte poroso cerámico. Una vez optimizada su preparación mediante deposición no electrolítica se caracterizan. Para ello se determina su permeabilidad a distintas temperaturas y realizando ciclos térmicos en atmósferas inerte y de hidrógeno, que puede fragilizar el metal. Una vez preparados los catalizadores y las membranas se integran los dos sistemas y se determinan los parámetros de operación óptimos como la presión de la línea de alimentación y el caudal de gas de arrastre en el módulo de membrana. Ambos parámetros se optimizan para lograr la máxima recuperación de hidrógeno en el módulo de membrana. Por últimos se realizan ensayos completos de producción y purificación, que permiten observar el rendimiento del sistema y también el efecto que los compuestos de la mezcla compleja alimentada a las membranas tienen en su comportamiento. Para concluir la integración de procesos se realizan ensayos añadiendo azufre de forma que el sistema sea más similar al proceso real. Esto permite también analizar el efecto del azufre tanto en los catalizadores como en las membranas.

Modelado y control de estación de célula de manipulación

[ES]El objetivo de este proyecto es el diseño e implementación del modelo de la estación FMS 201 (alimentación de la base) y el diseño e implementación del control de la estación. Esta estación pertenece a la serie FMS 200 (sistema didáctico modular de ensamblaje flexible) distribuido por la empresa SMC. Se dispone uno en el laboratorio de investigación del departamento de Ingeniería de Sistemas y Automática de la Escuela Superior de Ingeniería de Bilbao (EHU/UPV). Para el desarrollo e implementación del modelo se usará la herramienta informática Automation Studio. Para el control del modelo se usará el PLC. Para el intercambio de información entre modelo y controlador se utilizará la comunicación OPC Para el control de la estación se usa un PLC S7-300 de la marca SIEMENS. Se finaliza el documento realizando las pruebas de validación del modelo desarrollado, ejecutándose el programa de control en el PLC y corriendo el modelo desarrollado en el PC.

自陡峭效应对相位共轭系统脉冲传输的影响

光学相位共轭(OPC)技术能够同时且高效地补偿光纤传输过程中色散及非线性效应所导致的信号失真，且该技术同脉冲调制方式无关。从理论上分析了在自陡峭效应(SS)作用下高斯脉冲信号在中距相位共轭系统中的传输演化特性，数值模拟了在其作用下超短飞秒高斯脉冲的动态传输过程，讨论了自陡峭效应对中距相位共轭系统复原性能的影响。结果表明自陡峭效应将导致高斯脉冲信号发生峰值漂移和脉冲后沿变陡，相位共轭系统不能补偿由此导致的脉冲失真和畸变。引入合适的色散可以减小这种信号失真，并使得相位共轭系统能够同时补偿由于色散、自相位调制和

Pio del Rio Hortega and the discovery of the oligodendrocytes

Rio del Rio Hortega (1882-1945) discovered microglia and oligodendrocytes (OLGs), and after Ramon y Cajal, was the most prominent figure of the Spanish school of neurology. He began his scientific career with Nicolas Achucarro from whom he learned the use of metallic impregnation techniques suitable to study non-neuronal cells. Later on, he joined Cajal's laboratory. and Subsequently, he created his own group, where he continued to develop other innovative modifications of silver staining methods that revolutionized the study of glial cells a century ago. He was also interested in neuropathology and became a leading authority on Central Nervous System (CNS) tumors. In parallel to this clinical activity, del Rio Hortega rendered the first systematic description of a major polymorphism present in a subtype of macroglial cells that he named as oligodendroglia and later OLGs. He established their ectodermal origin and suggested that they built the myelin sheath of CNS axons, just as Schwann cells did in the periphery. Notably, he also suggested the trophic role of OLGs for neuronal functionality, an idea that has been substantiated in the last few years. Del Rio Hortega became internationally recognized and established an important neurohistological school with outstanding pupils from Spain and abroad, which nearly disappeared after his exile due to the Spanish civil war. Yet, the difficulty of metal impregnation methods and their variability in results, delayed for some decades the confirmation of his great insights into oligodendrocyte biology until the development of electron microscopy and immunohistochemistry. This review aims at summarizing the pioneer and essential contributions of del Rio Hortega to the current knowledge of oligodendrocyte structure and function, and to provide a hint of the scientific personality of this extraordinary and insufficiently recognized man.

流程工业CIMS中的实时数据库技术

流程工业存在着大量的实时数据处理、存储和集成问题，仅靠采用集散式控制系统（ＤＣＳ）和关系数据库技术并不能完全解决。开放结构的分布式实时数据库系统能够提供高速的实时数据服务，能够有效地集成异构控制系统，它和关系数据库一起构成了流程企业的数据平台，对流程工业的生产信息集成起着极其重要的作用，是流程工业ＣＩＭＳ实施中的关键技术。该文针对流程工业ＣＩＭＳ的特点，介绍了在流程工业ＣＩＭＳ中实时数据库的功能．系统结构及其采用的关键技术。

企业级工控实时数据库研究与实现

在工控领域中，企业实时数据的管理和共享是企业在提高自动化程度过程中面临的重要课题。该文在着重分析了工控领域中实时数据库的应用需求之后，详细介绍了实时数据库系统Ａｇｉｌｏｒ开放式的系统结构及其数据处理中所采用的关键技术。

基于实时数据库的分布式卫星综合测试平台设计与实现

近年来卫星技术获得了突飞猛进的发展，由于卫星技术本身的特殊性，卫星测试对卫星技术的发展起着至关重要的作用。随着卫星技术的发展，单颗卫星的多阶段测试，多颗卫星同时测试是不可避免的。传统的文件存储和关系数据库存储已经不能适应日益增多的测试数据，及时有效的处理测试产生的大量动态数据是卫星综合测试面临的重要问题。 本文主要工作如下： 1.分析了现有的各种卫星测试系统，在总结各个系统的基础上设计了一种基于实时数据库的分布式卫星综合测试平台。 2.针对分布式数据库同步问题，给出了一种基于单向数据传输的分布式数据同步机制。 3.开发了基于实时数据库的分布式卫星综合测试平台。通过该平台可以把各个测试间内的测试数据展现到测试间外，为测试人员提供了极大的方便。系统网络通信部分采用ACE框架使得系统具有很好的移植性和稳定性。卫星数据的采集支持OPC接口从而可以适应不同数据源的卫星测试。

Identification of 27 Porphyra lines (Rhodophyta) by DNA fingerprinting and molecular markers

Twenty-seven Porphyra lines, including lines widely used in China, wild lines and lines introduced to China from abroad in recent years, were screened by random amplified polymorphic DNA (RAPD) technique with 120 operon primers. From the generated RAPD products, 11 bands that showed stable and repeatable RAPD patterns amplified by OPC-04, OPJ-18 and OPX-06, respectively were scored and used to develop the DNA fingerprints of the 27 Porphyra lines. Moreover, the DNA fingerprinting patterns were converted into computer language expressed with two digitals, 1 and 0, which represented the presence (numbered as 1) or absence (numbered as 0) of the corresponding band, respectively. Based on the above results, computerized DNA fingerprints were constructed in which each of the 27 Porphyra lines has its unique fingerprinting pattern and can be easily distinguished from others. Software named PGI (Porphyra germplasm identification) was designed for identification of the 27 Porphyra lines. In addition, seven specific RAPD markers from seven Porphyra lines were identified and two of them were successfully converted into SCAR (sequence characterized amplification region) markers. The developed DNA fingerprinting and specific molecular markers provide useful ways for the identification, classification and resource protection of the Porphyra lines.

装配与检测生产线监控系统的分析与设计

自动化装配与检测技术是先进制造技术的一个重要组成部分，广泛应用于电子、电气、机械、汽车以及其他高科技行业，是提高生产效率，提高产品质量，保证产品质量稳定性、减轻工人劳动强度、提升企业市场竞争能力的重要手段。装配与检测生产线监控系统采用计算机进行数据采集、数据分析和数据处理，从而达到生产监控管理功能。本文主要针对装配与检测自动化生产线的监控系统并侧重质量监控系统进行了研究、设计和实现。 本论文主要从设备与产品质量监控的理论分析、功能模块设计和监控系统实现三个方面对装配与检测生产线监控系统进行研究。 对设备的监控主要包括设备操作流程提示、操作失误提示、生产线类型设置、故障信息提示、安全提示、调度管理和数据管理。设备监控系统硬件结构由管理层、监控层和设备层三层结构组成，本文对这三层结构的功能及特点分别进行了分析。装配与检测生产线监控系统对产品质量监控理论分为两个部分：一是统计过程控制；二是测量系统分析。统计过程控制通过分析生产过程中产品的参数对装配与检测生产线的故障进行实时监控，并且对评价生产线质量能力的过程能力指数进行监控。测量系统分析通过对生产线中各测量传感器和测量仪器的测量数据进行分析，评价各测量设备的误差是否符合生产要求。 论文通过实际项目研究分析，总结出实现该类监控系统的基本模块，并实现了其中的四个模块，即数据采集模块、数据库系统模块、质量监控模块、人机界面模块。数据采集模块设计了四种与底层设备通讯的方式：串口、OPC、调用ActiveX控件和DDE。数据库系统模块完成数据的存储查询、图表的存储和查询、测试数据的存储与查询。质量监控模块设计了统计过程控制子模块、测量系统分析重复性与再现性子模块。人机界面模块提供了开发流程图的方法。 论文的最后以两个实际项目为背景，应用本论文对设备和产品质量监控的理论分析和开发的基本功能模块来快速地开发具有设备和质量监控功能的装配与检测生产线监控系统。

基于ARM的可编程控制系统实现

采用ARM设计小型可编程控制器,提供基于以太网和OPC标准的组态监控接口。用户采用符合IEC61131-3标准的梯形图方式对控制器自由编程,并通过计算机网络对其进行程序调试、下载和数据通信,从而实现了一套经济实用的小型可编程控制系统。

新型托辊柔性装配线制造信息系统

本文介绍了目前第一条完全由国内生产的全自动托辊装配线及其制造信息系统。该套装系统除具有较高的自动化程度外,还充分利用先进的伺服控制技术,采用先进的SIMOTION运动控制系统,实现了托辊产品装配的柔性化。同时在软件及信息管理方面充分考虑到先进制造管理的理念,为企业的MES系统及管理信息系统的实施和升级提供了充分的接口,从而打造出一条具有较高科技含量和先进性的自动装配线。

汽车变速器装配生产线监控系统的设计

生产监控系统在企业生产管理中具有重要的不可替代的地位。网络化生产监控系统适应了企业管控一体化发展的要求,它可以直接与企业上层管理信息系统相融合,使得管理人员可以直观的了解到生产现场细致的生产数据,从而可以在宏观和微观两个方面来把握企业生产、计划、调度、管理。本文以现场总线技术和OPC技术为理论基础,提出了一种网络化监控系统架构,并讲述了其功能,着重阐述了系统功能的设计和实现。

柔性托辊自动装配线及产品在线检测的研究与实现

托辊在国民经济的各行各业扮演着十分重要的角色，尤其在矿业生产的输送过程中,托辊更是发挥着巨大的作用。本项目旨在为托辊的自动化装配线提供整套控制执行系统。本文根据沈阳机床集团所提出的装配线控制要求，在查阅大量相关文献基础上，分析了托辊装配的整个工艺过程，结合先进制造的理念和技术，研究设计出包括制造过程底层信息系统在内的装配线控制系统。本文主要完成了以下研究工作及相关的创新性成果： 系统的供配电设计。根据设备的配电要求及相关规范，对整套控制系统的供配电进行合理的设计。 整条装配线的协调控制及信息系统设计与实现。结合目前广泛采用的工业现场总线技术，设计了整套分层控制及信息系统。整套系统分为三层，在顶层设计有监控系统，该系统通过以太网与下层的单台机床控制器进行信息互换。通过OPC技术将底层控制器采集到的现场信息在上位机上以友好的图文界面显示出来，供操作人员监控。同时还将每台机床的相关信息及以往报警历史按时间进行归档，形成现场装配过程信息备份，供上层的分析与决策系统使用。 现场每台机床采用独立的现场控制器进行控制。因为整条装配线被设计定位为柔性装配线，所以在机床控制上采用了伺服控制技术，以实现针对不同装配产品型号对托辊的支撑及夹具进行准确定位。控制器采用集逻辑、工艺、伺服控制于一体的西门子SIMOTION控制器。该控制器完成整个机床的动作及工艺控制，同时在现场每台机床控制器都配备一个触摸屏作为现场级人机界面，供机床现场调试和人机交互之用。 论文从整体上阐述了装配线控制系统的整体架构，并结合在线检测机床对机床的控制进行了讨论，从多方面体现出该控制及信息系统的完整性和先进性。 该项目开发的托辊装配线控制及信息系统旨在实现托辊安全、快速地自动化装配。并以单台机床单元控制器为主体通过现场总线技术为上层信息管理系统提供信息接口，为整条线的管理功能智能化扩展提供一个良好的平台。