Search results for "Opera"
showing 10 items of 8665 documents
Ārstēšanas aspekti bērnu vecuma pacientiem ar zarnu invagināciju
2016
Problēmas būtība. Zarnu invaginācija ir visbiežākais zarnu obstrukcijas iemesls bērniem vecumā no trīs mēnešiem līdz trīs gadiem (Bode, 2008). Neskatoties uz zinātnisko publikāciju klāstu, kas veltīts zarnu invagināciju izpētei, joprojām nav vienotu rekomendāciju par ārstēšanas pielietošanu. Pētījuma mērķi. 1) Literatūras apskates analīze. 2) Analizēt BKUS diagnostikas un ārstēšanas taktiku (rezultātus) pacientiem ar zarnu invagināciju laika posmā no 2006. gada janvāra līdz 2015. gada decembrim. 3) Salīdzināt iegūtos rezultātus ar pasaules literatūras datiem. Darba metode. Pēdējo piecu gadu literatūras atlase, izmantojot medicīnas literatūras datubāzes pēc atslēgas vārdiem. Retrospektīvs pē…
Quantitative Runge Approximation and Inverse Problems
2017
In this short note we provide a quantitative version of the classical Runge approximation property for second order elliptic operators. This relies on quantitative unique continuation results and duality arguments. We show that these estimates are essentially optimal. As a model application we provide a new proof of the result from \cite{F07}, \cite{AK12} on stability for the Calder\'on problem with local data.
El consorcio contractual de I+D+i. Un instrumento de cooperación científica, tecnológica e industrial
2021
La cooperación con otras entidades es una de las vías seguidas por las empresas para optimizar sus productos o procesos; es decir, para llevar a cabo sus actividades de I+D+i (investigación científica, desarrollo tecnológico e innovación industrial). Comporta la formación de un consorcio con universidades, organismos de investigación y/u otras empresas, cuya misión será ejecutar conjuntamente un proyecto de I+D y, en muchos casos, explotar sus resultados de manera concertada. Dichos consorcios de I+D+i han ido cobrando relevancia en las últimas décadas, avivados por los programas de ayudas públicas que incentivan su creación. Sin embargo, a pesar de ser numerosos los autores que los han est…
Computer-mediated communication and time pressure induce higher cardiovascular responses in the preparatory and execution phases of cooperative tasks
2010
Resumen tomado de la publicación La comunicación mediada por ordenador y la presión temporal inducen mayores respuestas cardiovasculares durante la preparación y la ejecución de tareas cooperativas. Las respuestas cardiovasculares (CV) en situaciones de estrés y reto han sido asociadas a diversos trastornos cardiovasculares, de alta prevalencia en las sociedades actuales. El empleo de nuevos canales de comunicación, el ritmo acelerado y el tipo de información manejada son potenciales factores moduladores de la respuesta psicofisiológica a situaciones comunes en nuestra sociedad, como la cooperación en grupos de trabajo En este estudio se ha analizado la respuesta cardiovascular ante dos tar…
Intraoperative Ultrasound: Emerging Technology and Novel Applications in Brain Tumor Surgery
2022
Intraoperative ultrasound (IOUS) is becoming progressively more common during brain tumor surgery. We present data from our case series of brain tumor surgery performed with the aid of IOUS in order to identify IOUS advantages and crucial aspects that may improve the management of neurosurgical procedures for brain tumors. From January 2021 to September 2021, 17 patients with different brain tumors underwent brain tumor surgery aided by the use of IOUS. During surgery, the procedure was supported by the use of multiples ultrasonographic modalities in addition to standard B-mode: Doppler, color Doppler, elastosonography, and contrast-enhanced intraoperative ultrasound (CEUS). In selected cas…
Central Region Upgrade for the Jyväskylä K130 Cyclotron
2020
The Jyväskylä K130 cyclotron has been in operation for more than 25 years providing beams from H to Au with energies ranging from 1 to 80 MeV/u for nuclear physics research and applications. At the typical energies around 5 MeV/u used for the nuclear physics program the injection voltage used is about 10 kV. The low voltage limits the beam intensity especially from the 18 GHz ECRIS HIISI. To increase the beam intensities the central region of the K130 cyclotron is being upgraded by increasing the injection voltage by a factor of 2. The new central region with spiral inflectors for harmonics 1-3 has been designed. The new central region shows better transmission in simulations than the origi…
Cell and molecular response to IORT treatment
2014
Ionizing radiations (IRs) generated by intraoperative radiotherapy (IORT) treatment activates both pro- and antiproliferative signal pathways producing an imbalance in cell fate decision regulated by several genes and factors involved in cell cycle progression, survival and/or cell death, DNA repair and inflammation. This paper describes the latest advances on cellular and molecular response to IR, highlighting the most relevant research data from cell biology, gene expression profiling and epigenetic studies on different tumor cell types. Understanding the cell molecular strategies to choose between death and survival, after an irradiation-induced damage, opens new avenues for the selectio…
La hubris manageriale quale fonte della irresponsabilità d’impresa: uno studio esplorativo
2014
Obiettivo del paper: L’ondata di scandali etici che ha colpito intensamente il mondo delle imprese a partire dalla fine del XX secolo ha fatto emergere l’esigenza di esplorare i meccanismi istituzionali tesi a evitare nuovi casi di corporate social irresponsibility (CSI). S’intende contribuire a tale dibattito introducendo la trappola della hubris manageriale quale determinante della CSI. Metodologia: Esame qualitativo-longitudinale del caso Parmalat nel periodo in cui è stata sotto la guida del suo fondatore Calisto Tanzi (1961-2003). L’analisi del caso segue i criteri scientifici del campionamento teorico, della triangolazione dei fatti e della periodizzazione della narrazione. Risultati:…
A sharp estimate for Neumann eigenvalues of the Laplace-Beltrami operator for domains in a hemisphere
2018
Here, we prove an isoperimetric inequality for the harmonic mean of the first [Formula: see text] non-trivial Neumann eigenvalues of the Laplace–Beltrami operator for domains contained in a hemisphere of [Formula: see text].
Aspects regarding the existence of fixed points of the iterates of Stancu operators
2019
In the papers Iterates of Stancu Operators, via Contraction Principle (2002), respectively Iterates of Bernstein Operators, via Contraction Principle (2004), author I. A. Rus studied the existence of fixed points for Stancu operators Pn,α,β and Bernstein operators Bn. The aim of this paper is to find conditions for which the Stancu operators Pn,α,β are contractions on the graph, in order to demonstrate that the contraction principle can be applied for the study of the existence of fixed points for iterates of Stancu operators. The method used for this paper is the spectral method, which was also used in the paper Over-iterates of Bernstein-Stancu operators (2007), authors Gonska, Piţul and …