Types and Annotations for CIDOC CRM Properties

The CIDOC CRM provides an extensive ontology for describing entities and properties appearing in cultural heritage (CH) documentation, history and archeology. CRM provides some means for describing information about properties (property types, attribute assignment, and "long-cuts") and guidelines for extending the vocabulary. However, these means are far from complete, and in some cases there is little guidance how to "implement" them in RDF. In this article we outline the problems, relate them to established RDF patterns and mechanisms, and describe several implementation alternatives.

流化床中RDF焚烧时CO、SO_2和HCl的生成

垃圾衍生燃料 (Refuse-Derived Fuels-RDF)具有热值高、易燃烧的优点。RDF的一个潜在应用是与煤进行混烧，替代一部分锅炉燃烧用煤。由于RDF挥发份相当高，因此燃烧时的污染物排放不易控制。本文在非均匀布风流化床中进行了RDF与煤的混烧试验，测量了H_2O、CO、CO_2、NO、N_2O、HCl、SO_2等污染物质的排放特性。结果表明与单纯燃烧RDF相比，混烧时的CO生成量大大下降；SO2生成浓度较低，而HCl的生成量比单纯烧煤时明显增加。

Release of Sulfur and Chlorine during Cofiring RDF and Coal in an Internally Circulating Fluidized Bed

An internally circulating fluidized bed (ICFB) was applied to investigate the behavior of chlorine and sulfur during cofiring RDF and coal. The pollutant emissions in the flue gas were measured by Fourier transform infrared (FTIR) spectrometry (Gasmet DX-3000). In the tests, the concentrations of the species CO, CO2, HCl, and SO2 were measured online. Results indicated when cofiring RDF and char, due to the higher content of chlorine in RDF, the formation of HCl significantly increases. The concentration of SO2 is relatively low because alkaline metal in the fuel ash can absorb SO2. The concentration of CO emission during firing pure RDF is relatively higher and fluctuates sharply. With the CaO addition, the sulfur absorption by calcium quickly increases, and the desulfuration ratio is bigger than the dechlorination ratio. The chemical equilibrium method is applied to predict the behavior of chlorine. Results show that gaseous HCl emission increases with increasing RDF fraction, and gaseous KCl and NaCl formation might occur.

Release of Sulfur and Chlorine During Cofiring Rdf and Coal In An Internally Circulating Fluidized Bed

An internally circulating fluidized bed (ICFB) was applied to investigate the behavior of chlorine and sulfur during cofiring RDF and coal. The pollutant emissions in the flue gas were measured by Fourier transform infrared (FTIR) spectrometry (Gasmet DX-3000). In the tests, the concentrations of the species CO, CO2, HCl, and SO2 were measured online. Results indicated when cofiring RDF and char, due to the higher content of chlorine in RDF, the formation of HCl significantly increases. The concentration Of SO2 is relatively low because alkaline metal in the fuel ash can absorb SO2. The concentration of CO emission during firing pure RDF is relatively higher and fluctuates sharply. With the CaO addition, the sulfur absorption by calcium quickly increases, and the desulfuration ratio is bigger than the dechlorination ratio. The chemical equilibrium method is applied to predict the behavior of chlorine. Results show that gaseous HCl emission increases with increasing RDF fraction, and gaseous KCl and NaCl formation might occur.

Centro de gestión de contenido en RDF

La primera idea de la realización de este proyecto, fue concebida por la necesidad de tener un sistema por el cual se pudieran cambiar datos de una aplicación, en un sistema móvil, a través de una página web. Sin embargo al conocer la potencia que tiene RDF para ser muy escalable terminó siendo un sistema de gestión de contenido general en RDF. Este sistema de gestión se ha realizado para ser lo más simple posible para un usuario, de tal manera que con solo 2 click en la página web y rellenando un formulario simple, pudiera tener una base de datos sin muchos conocimientos sobre la gestión de las mismas. Aunque claramente no es un sistema potente como si fuera una base de datos en Oracle, por citar un ejemplo, sirve para poder agregar, modificar y eliminar datos con sencillez. Así este sistema de gestión da una posibilidad muy sencilla de realizar tus propias bases de datos. Además aunque tiene un motor SQL para la gestión interna de almacenamiento, la salida de los datos es en RDF/XML con lo que podría ser compatible con un sistema más amplio como Oracle Database Semantic Technologies. Este CMS también tendrá un sistema de seguridad basado en usuario y contraseña. Para que la edición del contenido sea accesible solo a usuarios con acceso, mientras que la exportación de los datos será pública, y podrá ser accesible por cualquier usuario mediante una URI.

一种高效的RDF图模式匹配算法

随着越来越多的信息被表示为RDF格式，如何高效地对RDF信息进行分发和过滤成为一个重要的问题．在语义Web环境下的信息分发系统中，输入的RDF信息需要和大量的用户订阅条件进行匹配，而用户的订阅条件可以被表示为RDF图模式．根据RDF图的特点，并对其增加了一些约束．设计了一种新的RDF图模式匹配算法．实验结果表明，该算法的匹配效率远远高于传统的图模式匹配算法．

日本垃圾衍生燃料(RDF)的研究开发

综述垃圾衍生燃料（ Refuse Derived Fuel， R D F）的性能、研究开发概况，介绍了日本几个有代表性的垃圾衍生燃料生产利用设备