Search results for "Pact"
showing 10 items of 2355 documents
Reduced regional systolic function evolved compacted segments in noncompaction
2010
Abstract In a recent report about noncompaction Nemes et al. reported that systolic left ventricular (LV) dysfunction assessed using the wall motion score during 2D echocardiography in noncompaction is not confined to noncompacted LV segments. These results confirmed some published reports of our group. Recently we analyzed a population of 238 patients affected by noncompaction, and demonstrated that the number of noncompacted segment is uncorrelated with the degree of systolic dysfunction. It is an attractive hypothesis that the systolic dysfunction could be depend on the fibrosis of the left ventricle, itself a consequence of microcirculatory dysfunction, which has been confirmed by repor…
Analysis of the multipactor effect in microwave waveguides and transmission lines
2017
El trabajo desarrollado en la presente tesis doctoral tiene por objeto el estudio del efecto multipactor en guías de microondas. La descarga de multipactor es un fenómeno que aparece en componentes que operan en condiciones de alto vacío, y en presencia de campos electromagnéticos de gran intensidad en el rango de la radiofrecuencia (RF) y las microondas. El efecto multipactor aparece en un amplio rango de dispositivos como son los componentes pasivos de los satélites de telecomunicaciones espaciales, los aceleradores de partículas, y los amplificadores tipo klystron. Este fenómeno se produce debido a la presencia de electrones libres en el interior del dispositivo que son acelerados por el…
Comparative study of the anesthetic efficacy of 4% articaine versus 2% lidocaine in inferior alveolar nerve block during surgical extraction of impac…
2007
Background: A comparative study is made of the anesthetic efficacy of 4% articaine versus 2% lidocaine, both with epinephrine 1:100,000, in truncal block of the inferior alveolar nerve during the surgical extraction of impacted lower third molars. Study design: A randomized double-blind clinical trial was conducted of 30 patients programmed for the bilateral surgical extraction of symmetrical lower third molars in the context of the Master of Oral Surgery and Implantology (University of Barcelona, Barcelona, Spain). Following the obtainment of informed consent, two operators performed surgery on an extemporaneous basis, using as local anesthetic 4% articaine or 2% lidocaine with the same co…
Government Economic Regulations in the Sphere of Higher Education during COVID-19 Crisis in Central Asia
2021
Bakalaura darbā tiek pētīta valsts ekonomiskā iejaukšanās, izmantojot augstākās izglītības ekonomisko regulējumu piemēru Vidusāzijā laikā no 2020. gada marta līdz 2021. gada martam. Mērķis ir salīdzināt COVID-19 krīzes ekonomisko ietekmi uz augstāko izglītību un ieviestajiem ekonomikas noteikumiem. Autors pētījumu veic daļēji strukturētu interviju veidā ar vadošo Vidusāzijas augstskolu pārstāvjiem. Galvenā atklātā problēma ir nesagatavotība ātrai pārejai uz tālmācību. Visbiežākie iemesli ir retā tiešsaistes studiju programmu prakse un sabiedrisko preču, piemēram, stabila interneta pieslēguma un elektrības, nodrošināšana. Pētījums arī parādīja, ka reģionā visplašāk izmantotais regulatīvais r…
Multipactor radiation analysis within a waveguide region based on a frequency-domain representation of the dynamics of charged particles
2009
[EN] A technique for the accurate computation of the electromagnetic fields radiated by a charged particle moving within a parallel-plate waveguide is presented. Based on a transformation of the time-varying current density of the particle into a time-harmonic current density, this technique allows the evaluation of the radiated electromagnetic fields both in the frequency and time domains, as well as in the near- and far-field regions. For this purpose, several accelerated versions of the parallel-plate Green's function in the frequency domain have been considered. The theory has been successfully applied to the multipactor discharge occurring within a two metal-plates region. The proposed…
Life cycle methods for environmental assessment of nanotechnology
2012
Tämä tutkielma on kirjallisuuskatsaus, joka antaa yleissilmäyksen erilaisiin elinkaarimetodeihin, joilla voidaan arvioida nanoteknologiaa sisältävien tuotteiden ympäristövaikutuksia. Työssä selvitetään elinkaariajattelun tärkeys ja kuvataan erilaisia ympäristöarviointimenetelmiä. Tässä tutkielmassa tarkastellut menetelmät ovat elinkaariarvionti (LCA), hiilijalanjälki, vesijalanjälki, ekologinen jalanjälki ja ekologinen selkäreppu (MIPS). Työ käsittelee nanoteknologiaan liittyviä ympäristöasioita ja tarkastelee elinkaarimenetelmien soveltamista ja soveltuvuutta nanoteknologiaan. Työn tuloksena raportoidaan, että kuvatut ympäristöarviointimenetelmät soveltuvat nanoteknologian vaikutusten arvi…
Demo 71. Modelo de bolas rígidas para apilamiento compacto
2013
Objetivos: Mostrar gráficamente diferentes empaquetamientos atómicos compactos.
Structural and functional characterization of IMPACT proteins: a novel nuclease family
2016
Tesis doctoral, 183 páginas, tablas y figuras.
La estrategia de la UE para aprovechar el potencial de las energías renovables marinas para un futuro climáticamente neutro
2023
Esta publicación resume las claves de la estrategia de la UE para aprovechar el potencial de las energías renovables marinas para un futuro climáticamente neutro.
Review on Life Cycle Assessment of Solar Photovoltaic Panels
2020
The photovoltaic (PV) sector has undergone both major expansion and evolution over the last decades, and currently, the technologies already marketed or still in the laboratory/research phase are numerous and very different. Likewise, in order to assess the energy and environmental impacts of these devices, life cycle assessment (LCA) studies related to these systems are always increasing. The objective of this paper is to summarize and update the current literature of LCA applied to different types of grid-connected PV, as well as to critically analyze the results related to energy and environmental impacts generated during the life cycle of PV technologies, from 1st generation (traditiona…