Search results for "CHAMBER"

Insights into the compositional evolution of crustal magmatic systems from coupled petrological-geodynamical models

2020

Funding was provided by the VAMOS Research Center, University of Mainz (Germany) and by the ERC Consolidator Grant MAGMA (project #771143). The evolution of crustal magmatic systems is incompletely understood, as most studies are limited either by their temporal or spatial resolution. Exposed plutonic rocks represent the final stage of a long-term evolution punctuated by several magmatic events with different chemistry and generated under different mechanical conditions. Although the final state can be easily described, the nature of each magmatic pulse is more difficult to retrieve. This study presents a new method to investigate the compositional evolution of plutonic systems while consid…

Intrusion of granitic magma into the continental crust facilitated by magma pulsing and dike‐diapir interactions: Numerical simulations

2016

209 New Fricke gel with high sensitivity and low diffusion for 3D-MRI dosimetry

2018

Purpose Fricke gel (FG) dosimeters are good candidates for 3D dose assessment in biological materials. Their effective atomic number and density are similar to those of soft tissue. In view of their chemical and morphological characteristics, FG serve as dosimeters and as phantoms at the same time. FG dosimeters are obtained by incorporating an acidic aqueous solution of ferrous ions Fe2+ into a gel matrix. In order to address the limitations of gels based on natural matrices, we have studied FG produced with a matrix of poly-vinyl alcohol (PVA) cross-linked with glutaraldehyde (GTA). Materials and methods The proposed gel contains 10% w/v of PVA and GTA of 1%w/v. A common formulation agaro…

L’analisi strutturale e le fasi

2019

The X13-X13.1 is one of the most considerable cubicles in the catacomb. It consists of a quadrangular funerary chamber preceded by a short dromos placed along the gallery X. The tombs are several and of different types: arcosolia for adults and children, lithic sarcophagi, pavimental graves ("formae"), and very interesting areas for ritual "refrigerium" The archaeological investigations and the structural date indicate that the duplex cubicle is the result of different phases of development, and that it was used by a numerous and wealthy family group for several generations, by the end of the fourth/beginning of the fifth to the seventh/eighth century, as it seems also indicated by the pott…

Premessa al volume: Il cubicolo X13 nella catacomba di Villagrazia di Carini. Indagini preliminari e interventi di consolidamento 2016-2019

2019

This book is dedicated to the archaeological excavations and to the consolidation of the structures of cubicle X13 in the catacomb of Villagrazia di Carini (PA). In 2015 the interesting funerary chamber was seriously damaged by the collapse of the ceiling; from 2016 to 2019, the realization of the recovery and restoration project by the Pontificia Commissione di Archeologia Sacra has been the occasion for the study of the rock-cut architectures and of the structural characteristics of the cubicle, one of the most remarkable private funerary spaces in the Early Christian and byzantine cemetery of Carini.

Los oficiales y subalternos de la Real Audiencia de Mallorca (1716-1808)

2019

The objective of this work is to know the organic structure of the officers and subordinates of the Royal Court of Majorca during the 18th century, which was the essence of the high judicial administration insular. Because of that, we approached through these relatively extensive professionals, with the description of their functions, who they were and how they obtained their charges. The article ends with an epilogue dedicated to the enlargement of the Royal Court with the creation of the second chamber during the reformist stage of Charles III to improve the high judicial administration insular.

Near-intrinsic energy resolution for 30-662 keV gamma rays in a high pressure xenon electroluminescent TPC

2013

We present the design, data and results from the NEXT prototype for Double Beta and Dark Matter (NEXT-DBDM) detector, a high-pressure gaseous natural xenon electroluminescent time projection chamber (TPC) that was built at the Lawrence Berkeley National Laboratory. It is a prototype of the planned NEXT-100 Xe-136 neutrino-less double beta decay (0 nu beta beta) experiment with the main objectives of demonstrating near-intrinsic energy resolution at energies up to 662 keV and of optimizing the NEXT-100 detector design and operating parameters. Energy resolutions of similar to 1% FWHM for 662 keV gamma rays were obtained at 10 and 15 atm and similar to 5% FWHM for 30 keV fluorescence xenon X-…

Strumento virtuale in ambiente LabVIEW per la gestione automatica di misure di emissione radiata in camera semianecoica

2010

Efficient Low-Frequency Modal Analysis of Anechoic Chamber

2007

An efficient method to analyze the electromagnetic field inside rectangular anechoic and semianechoic chambers from 30 to 100 MHz is shown. A modal expansion is employed to develop the homogeneous and the inhomogeneous field. This is combined with circuital techniques to compute the effect of the layers of ferrite and dielectrics in the walls of the chamber. Several numerical results of the Free Space Transmission Loss (FSTL) of an anechoic chamber and the Normalized Site Attenuation (NSA) of a semianechoic chamber are provided.

PCM Thermal Energy Storage in Buildings: Experimental Study and Applications

2015

Abstract The study aims at analyzing the performance of Phase Change Materials (PCMs) in residential housing for different climates. This paper presents the results of an experiment performed in the Concordia University Solar Simulator and Environmental Chamber research facility (SSEC, Montreal, Canada). PCM boards were embedded on the back wall of a test hut placedin the climatic chamber. Several experiments were performed to explore the potential for verification of the proposed analysis and to produce enough data to perform model calibrations. Results show a strong increase in the apparent thermal inertia of the room allowing for a reduction in daily temperature fluctuations in the test …