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Advances in the adsorptive particulate flotation process
(09/18/2003)
The removal of contaminants from liquid effluents by the adsorptive particulate flotation (APF) process, including new adsorbents and flotation devices, are reported. Herein, contaminants are adsorbed (and/or absorbed) ...
Remoção de íons de metais pesados com bentonitas modificadas
(2001-06-23)
O presente trabalho apresenta o desenvolvimento
de um material sorvente a partir de bentonitas brasileiras
modificadas quimicamente com o objetivo de aumentar sua
capacidade de sorção de metais pesados e seu valor
agregado. ...
Displays and Photonics Application Group Activities
(06/01/2004)
Displays and Photonics Application Group (GDAF) is devoted to design and development of passive and active devices and sensors for their applications in WDM networks, CWDM, POF, and RF over fiber networks using different ...
Modelling ETL processes of data warehouses with UML activity diagrams
(11/09/2008)
Extraction-transformation-loading (ETL) processes play an important role in a data warehouse (DW) architecture because they are responsible of integrating data from heterogeneous data sources into the DW repository. ...
Preparación de Películas de Óxidos de Estaño Como Sensores de Gases
(2009-06)
Se obtuvieron películas delgadas de Óxido de Estaño (SnO2) por el método de química líquida a partir de una solución precursora de Cloruro de Estaño IV (SnCl4). Las muestras fueron depositadas sobre sustrato de vidrio ...
Efecto del estrés hídrico a distintas temperaturas sobre la germinación de semillas de Bulnesia retama (Gill. ex. Hook.) Griseb. -Zigofiláceas - en San Luis, Argentina
(07/12/2007)
Se estudió la germinación de semillas de Bulnesia retama frente a condiciones de estrés hídrico, simulado con PEG6000 a distintas temperaturas, y su recuperación ante el estrés. Las semillas recolectadas en San Luis ...
A numerical study of parameters governing an inherent deformation database of plates formed by line heating
(2008-08)
As an overall strategy to improve the accuracy of the forming process, the authors pay attention to those factors which may influence the inherent deformation of plates formed by line heating. In order to identify those ...
From implicit to touching interaction: RFID and NFC approaches
(05/25/2008)
Intelligent environments need interactions capable of detecting users and providing them with goodquality contextual information. In this sense we adapt technologies identifying and locating people adjusting their requirements. ...
Design and tolerance analysis of a router with an amplified resonator and Bragg gratings
(04/20/2000)
A novel ring resonator configuration with Bragg gratings is presented. The stability of this configuration is studied by a z-transform technique. A router design with a FWHM of 17 MHz, a -40-dB rejection ratio, and a 15-dB ...
Outer Factor 2-D MA Models for Purely Random Fields and Fields and Wold-Tipe Texture Decompositions
(2007-06-29)
In this paper, we propose a new method to compute the parameters of finite approximations of 2-D MA infinite models associated with purely indeterministic stationary fields, by using spectral factorizations. This method ...