Search results for "IMPACT"
showing 10 items of 1703 documents
Halogen activation in the plume of Masaya volcano: field observations and box model investigations
2020
Volcanic emissions are a source of halogens in the atmosphere. Rapid reactions convert the initially emitted hydrogen halides (HCl, HBr, and HI) into reactive species such as BrO, Br2, BrCl, ClO, OClO, and IO. The activation reaction mechanisms in the plume consume ozone (O3), which is entrained by ambient air that is mixed into the plume. In this study, we present observations of the oxidation of bromine, chlorine, and iodine during the first 11 min following emission, examining the plume from Santiago crater of the Masaya volcano in Nicaragua. Two field campaigns were conducted: one in July 2016 and one in September 2016. The sum of the reactive species of each halogen was determined by g…
Deep-Sea Bioluminescence Blooms after Dense Water Formation at the Ocean Surface
2013
The deep ocean is the largest and least known ecosystem on Earth. It hosts numerous pelagic organisms, most of which are able to emit light. Here we present a unique data set consisting of a 2.5-year long record of light emission by deep-sea pelagic organisms, measured from December 2007 to June 2010 at the ANTARES underwater neutrino telescope in the deep NW Mediterranean Sea, jointly with synchronous hydrological records. This is the longest continuous time-series of deep-sea bioluminescence ever recorded. Our record reveals several weeks long, seasonal bioluminescence blooms with light intensity up to two orders of magnitude higher than background values, which correlate to changes in th…
Fremmede arter i Norge: resultater fra kvantitative økologiske risikovurderinger
2020
1. Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in local biodiversity and ecosystem functioning, and, ultimately, to biotic homogenisation. 2. We risk-assessed all alien plants, animals, fungi and algae, within certain delimitations, that are known to reproduce in Norway. Mainland Norway and the Arctic archipelago of Svalbard plus Jan Mayen were treated as separate assessment areas. Assessments followed the Generic Ecological Impact Assessment of Alien Species (GEIAA) protocol, which uses a fully quantitative set of criteria.…
The impact of direct acting antivirals on hepatitis C virus disease burden and associated costs in four European countries
2021
Eliminació del VHC; Punt d'equilibri; Infecció d'hepatitis C Eliminación del VHC; Punto de equilibrio; Infección de hepatitis C HCV elimination; Break-even; Hepatitis C infection Background and Aims We assessed the clinical and economic impact of direct-acting antiviral (DAA) therapy for hepatitis C virus (HCV) in England, Italy, Romania and Spain. Methods An HCV progression Markov model was developed considering DAA eligibility and population data during the years 2015-2019. The period of time to recover the investment in DAAs was calculated as the cost saved by avoiding estimated clinical events for 1000 standardized treated patients. A delayed treatment scenario because of coronavirus di…
Transverse momentum spectra and nuclear modification factors of charged particles in pp, p-Pb and Pb-Pb collisions at the LHC
2018
We report the measured transverse momentum ($p_{\rm T}$) spectra of primary charged particles from pp, p-Pb and Pb-Pb collisions at a center-of-mass energy $\sqrt{s_{\rm NN}} = 5.02$ TeV in the kinematic range of $0.15<p_{\rm T}<50$ GeV/$c$ and $|\eta|< 0.8$. A significant improvement of systematic uncertainties motivated the reanalysis of data in pp and Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV, as well as in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV, which is also presented. Spectra from Pb-Pb collisions are presented in nine centrality intervals and are compared to a reference spectrum from pp collisions scaled by the number of binary nucleon-nucleon collisions. For cent…
Visibilidad internacional de la investigación de la Universitat de València (Web of Science 2000-2009)
2013
En esta publicación se ofrecen los primeros resultados del análisis de la producción científica de la Universitat de València para la década 2000-2009 realizado mediante la explotación de las bases de datos de la Web of Science (SCI, SSCI y A&HCI). La información está organizada en dos capítulos. El primero, dedicado a ofrecer una imagen general de la producción de la Universitat, permite apreciar el volumen de publicaciones circulantes en esas bases de datos, su crecimiento en el periodo estudiado, la tipología documental, el idioma de publicación y su clasificación temática. Para esto se han utilizado dos clasificaciones, la primera más detallada basada en las 247 categorías temáticas en …
La biblioteca en el espacio ciudadano. Reflexiones a partir de la investigación española sobre el usuario de la información, 2005-2019
2021
Los últimos datos sobre el escaso uso de las bibliotecas españolas cuestionan la utilidad de este servicio en la cotidianidad ciudadana. Paralelamente, un movimiento dentro de la Biblioteconomía y Documentación que habla de la biblioteca social, participativa o del bien común, busca ampliar el espacio ciudadano que ésta ocupa. Este trabajo se centra en las implicaciones que para este propósito tienen las últimas investigaciones españolas sobre usuarios de la información. Primero, los datos revelan la escasa participación de los profesionales en estas investigaciones. Segundo, abundan aquellas que se centran en la evaluación de unidades de información, pero escasean las dirigidas a obtener d…
SHORTNESS OF FILUM TERMINALE REPRESENT AN ANATOMICAL SPECIFC FEATURES IN FIBROMYALGIIA : A NUCLEAR MAGNETIC RESONANCE AND CLINICAL STUDY
2015
BACKGROUND: we aimed to assess whether shortness of filum terminale (FT) can represent a specific feature of fibromyalgia. Therefore we investigated benefits coming from FT section with a mini-invasive technique in patients with fibromyalgia. Filum terminale disease (FD), described firstly in 1996, is consequence of an abnormal traction exerted on spinal cord since FT is shorter than usual. Fibromyalgia syndrome (FS) is featured by chronic widespread musculoskeletal pain associated with stiffness and extra-skeletal symptoms affecting many organs and systems. Filum terminale disease and fibromyalgia syndrome share common clinical features in at least one subset of patients. METHODS: we evalu…
The Intention-to-Treat Effect of Bridging Treatments in the Setting of Milan Criteria–In Patients Waiting for Liver Transplantation
2019
In patients with hepatocellular carcinoma (HCC) meeting the Milan criteria (MC), the benefit of locoregional therapies (LRTs) in the context of liver transplantation (LT) is still debated. Initial biases in the selection between treated and untreated patients have yielded conflicting reported results. The study aimed to identify, using a competing risk analysis, risk factors for HCC-dependent LT failure, defined as pretransplant tumor-related delisting or posttransplant recurrence. The study was registered at www.clinicaltrials.gov (identification number NCT03723304). In order to offset the initial limitations of the investigated population, an inverse probability of treatment weighting (IP…
Plan S: challenges and opportunities in Spain
2019
Spain is one of the most active European countries in the open access (OA) movement. Although the gold route has scarcely been used, the green route has been intensively implemented through fulfilment of European and national mandates and the development of institutional policies. Plan S is becoming a disruptive element in the context of scientific communication, and Spain’s possible adherence to Plan S could imply technical challenges in journals and repositories, additional costs that are difficult to estimate, or refusal to accept the Plan on the part of researchers (based on the loss of freedom to choose the journal in which to publish). However, the implementation of Plan S in Spain wo…