Modelado por medio de elementos finitos móviles de la dinámica de flujos en ebullición

Se presenta un modelo numérico de un canal de ebullición en base a elementos finitos unidimensionales móviles. El modelo se basa en una aproximación nodal de Galerkin para las ecuaciones de conservación de un canal en ebullición. Entre cada nodo se proponen perfiles espaciales de entalpía, llegándose a un sistema de ecuaciones ordinarias no lineales que permiten hallar la evolución temporal de la posición de cada nodo. Se presentan varias soluciones, y se discuten las ventajas e inconvenientes que posee la utilización de un método de elementos finitos móviles para la resolución de este tipo de problemas.A numerical model of a boiling channel based in one-dimensional variable-length finite elements is presented. A Galerkin nodal approximation is used to reduce the conservation equations to a set of ordinary differential equations. Spatial enthalpy profiles are assumed between each.node, yielding a set of non-linear equations for the position of the nodes. Severa1 numerical solutions are presented and the advantages and disadvantages of the application of finite elements in this type of problems is discussed.Peer Reviewe

PO-0752: Outcome of prostate cancer patients treated with 3DCRT: impact of rectal/bladder preparation

n/

Radiation tolerant VLSI circuits in standard deep submicron CMOS technologies for the LHC experiments: practical design aspects

We discuss design issues related to the extensive use of Enclosed Layout Transistors (ELT's) and guard rings in deep submicron CMOS technologies in order to improve radiation tolerance of ASIC's designed for the LHC experiments (the Large Hadron Collider at present under construction at CERN). We present novel aspects related to the use of ELT's: noise measured before and after irradiation up to 100 Mrad (SiO/sub 2/), a model to calculate the W/L ratio and matching properties of these devices. Some conclusions concerning the density and the speed of IC's conceived with this design approach are finally drawn. (16 refs)

The energy center initiative at politecnico di torino: practical experiences on energy efficiency measures in the municipality of torino

Urban districts should evolve towards a more sustainable infrastructure and greener energy carriers. The utmost challenge is the smart integration and control, within the existing infrastructure, of new information and energy technologies (such as sensors, appliances, electric and thermal power and storage devices) that are able to provide multi-services based on multi-actors and multi and interchangeable energy carriers. In recent years, the Municipality of Torino represents an experimental scenario, in which practical experiences in the below-areas have taken place through a number of projects: 1. energy efficiency in building; 2. smart energy grids management and smart metering; 3. biowaste-to-energy: mixed urban/industrial waste management with enhanced energy recovery from biogas. This work provides an overview and update on the most interesting initiatives of smart energy management in the urban context of Torino, with an analysis and quantification of the advantages gained in terms of energy and environmental efficiency

OC-0145: Preoperative radiotherapy with an integrated boost compared to chemoradiotherapy for rectal cancer

n/