Search results for "CHAMBER"

Giant right atrial myxoma: A rare cause of cardiovascular collapse

2019

We report the case of a patient with a giant right atrial myxoma that remained clinically silent until it almost completely obliterated the right atrium, prolapsed into the right ventricle and obstructed the tricuspid valve inflow. This case illustrates the importance of rapid surgical intervention in the setting of acute heart failure caused by tumor masses obliterating heart valves or cardiac chambers.

Spazio ritmo e tempo. La costruzione di un archivio mediterraneo

2014

Highly-parallelized simulation of a pixelated LArTPC on a GPU

2023

The rapid development of general-purpose computing on graphics processing units (GPGPU) is allowing the implementation of highly-parallelized Monte Carlo simulation chains for particle physics experiments. This technique is particularly suitable for the simulation of a pixelated charge readout for time projection chambers, given the large number of channels that this technology employs. Here we present the first implementation of a full microphysical simulator of a liquid argon time projection chamber (LArTPC) equipped with light readout and pixelated charge readout, developed for the DUNE Near Detector. The software is implemented with an end-to-end set of GPU-optimized algorithms. The alg…

Heritability of anterior chamber depth and axial length: a population-based twin study among 66 to 79-year old female twins.

2014

Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC

2020

The $3 \times 1 \times 1$ m$^3$ demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. The light signal in these detectors is crucial to provide precise timing capabilities. The performances of the photon detection system, composed of five PMTs, are discussed. The collected scintillation and electroluminescence light created by passing particles has been studied in various detector conditions. In particular, the scintillation light production and propagation processes have been analyzed and compared to simulations, improving the understanding of some liquid argon properties.

Priekšējās kameras kakta novērtēšana ar optiskās koherences tomogrāfu

2020

Bakalaura darbs uzrakstīts latviešu valodā uz 25 lapaspusēm, tas satur 6 tabulas, 19 attēlus un 30 literatūras atsauces. Pētījuma mērķis bija izpētīt acs priekšējā kameras kakta struktūras atvērta un slēgta kakta glaukomas gadījumos, un sakarību starp acs priekšējā kameras kakta leņķi un varavīksnenes saknes formu. Tika analizēti 311 vienas līnijas OCT attēli no oftalmologa privātprakses, kas tika iedalīti vairākās grupās: NORM (bez acu saslimšanām), PAKG1 (primāra atvērta kakta glaukoma 1. stadijā), PAKG2 (primāra atvērta kakta glaukoma 2. stadijā), PAKG3 (primāra atvērta kakta glaukoma 3. stadijā) un SAKG (slēgta atvērta kakta glaukoma) tika analizētas varavīksnenes saknes formas (VSF) un…

A GEM-TPC in twin configuration for the Super-FRS tracking of heavy ions at FAIR

2018

The GEM-TPC [1] described herein will be part of the standard beam-diagnostics equipment of the Super-FRS [2] . This chamber will provide tracking information for particle identification at rates up to 1 MHz on an event-by-event basis. The key requirements of operation for these chambers are: close to 100% tracking efficiency under conditions of high counting rate, spatial resolution below 1 mm and a superb large dynamic range covering projectiles from Z=1 up to Z=92. The current prototype consists of two GEM-TPCs inside a single vessel, which are operating independently and have electrical drift fields in opposite directions. The twin configuration is done by flipping one of the GEM-TPCs o…

The sirocco chambers: passive cooling structures in the XVI century Palermo area

2014

In the past centuries, the plain surrounding the city of Palermo saw the construction of tens of suburban manor houses, called villas, which were referred to as “places of delight” for the amenities they offered during the good season. These architectural machines were built by aristocrats to make living in the countryside more pleasant and to exhibit their families’ richness and power. Among the delights, the Sirocco rooms were very common in Palermo from the Renaissance, and especially beyond to the XVIII century. They were artificial subterranean structures, built close to a water spring in order to reproduce the pleasant conditions of freshness that could be experienced in a natural cav…

Paul Chambersin soittotyylin analyysi

2006

The OLYMPUS Experiment

2014

Nuclear instruments & methods in physics research / A 741, 1 - 17 (2014). doi:10.1016/j.nima.2013.12.035