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showing 10 items of 1530 documents
Search for excited electrons and muons in root s=8 TeV proton-proton collisions with the ATLAS detector
2013
The ATLAS detector at the Large Hadron Collider is used to search for excited electrons and excited muons in the channel pp → ℓℓ* → ℓℓγ, assuming that excited leptons are produced via contact interactions. The analysis is based on 13 fb[superscript −1] of pp collisions at a centre-of-mass energy of 8 TeV. No evidence for excited leptons is found, and a limit is set at the 95% credibility level on the cross section times branching ratio as a function of the excited-lepton mass m[subscript ℓ*]. For m[subscript ℓ*] ≥ 0.8 TeV, the respective upper limits on σB(ℓ* → ℓγ) are 0.75 and 0.90 fb for the e* and μ* searches. Limits on σB are converted into lower bounds on the compositeness scale Λ. In …
Search for strong gravity signatures in same-sign dimuon final states using the ATLAS detector at the LHC
2012
A search for microscopic black holes has been performed in a same-sign dimuon final state using 1.3 fb[superscript −1] of proton–proton collision data collected with the ATLAS detector at a centre of mass energy of 7 TeV at the CERN Large Hadron Collider. The data are found to be consistent with the expectation from the Standard Model and the results are used to derive exclusion contours in the context of a low scale gravity model.
Origin of atmospheric aerosols at the Pierre Auger Observatory using studies of air mass trajectories in South America
2014
The Pierre Auger Observatory is making significant contributions towards understanding the nature and origin of ultra-high energy cosmic rays. One of its main challenges is the monitoring of the atmosphere, both in terms of its state variables and its optical properties. The aim of this work is to analyze aerosol optical depth $\tau_{\rm a}(z)$ values measured from 2004 to 2012 at the observatory, which is located in a remote and relatively unstudied area of the Pampa Amarilla, Argentina. The aerosol optical depth is in average quite low - annual mean $\tau_{\rm a}(3.5~{\rm km})\sim 0.04$ - and shows a seasonal trend with a winter minimum - $\tau_{\rm a}(3.5~{\rm km})\sim 0.03$ -, and a sum…
Current trends in scientific research on global warming: A bibliometric analysis
2019
[EN] The objective of this paper is to contribute to a better understanding of the scientific knowledge in global warming, as well as to investigate the evolution of the research knowledge through the published papers included in Web of Science database. A bibliometric and social network analyses was performed to obtain indicators of scientific productivity, impact and collaboration between researchers, institutions and countries. A subject analysis was also carried out taking into account the key words assigned to papers and subject areas of journals. A number of 1,672 articles were analysed since 2005 until 2014. The most productive journals were Journal of Climate (n = 95) and the most f…
El Padre Tosca y la iglesia de Santo Tomás de Valencia
1978
Docencia presencial, on-line o mixta: ¿Qué herramientas pedagógicas son mejor valoradas por el alumnado?
2020
[EN] The implementation of the Bologna process in Spanish universities, which has been active for a decade as of this academic year, facilitated the implementation of multiple teaching methodologies where numerous Information and Communication Technologies (ICTs) and e-learning tools have had a place. Thus, at this point, an analysis ought to be carried out of the impact that their use may have had on the teaching-learning process for the students. The results from such study will allow selecting the tools that could potentially optimize the results of the aforementioned process. Once the best ones among them have been identified, and taking into account their face-to-face or online nature,…
La Ley 41/2002, de 14 de noviembre, básica reguladora de la autonomia del paciente y de los derechos y obligaciones en materia de información y docum…
2003
En el presente trabajo se va a exponer (por su extensión en dos partes) el contenido básico de la reciente Ley sobre autonomía de los pacientes, con referencia expresa a las leyes autonómicas sobre la misma materia. Es de destacar que en todas ellas se consagra como un principio fundamental en la relación médico-paciente el principio de información y requerimiento del consentimiento al paciente para la realización de cualquier intervención sobre el mismo. Asimismo, se establecen los mecanismos de sustituciónde ese consentimiento cuando el paciente no se encuentre en condiciones de darlo por incapacidad o minoría de edad. Por otra parte, se regula mínimamente el documento de voluntades antic…
Sguardo di ascolto: note di ricerca sul film Aylesbury Estate (2020)
2022
Aylesbury Estate (2020) è un lungometraggio documentario sul noto complesso abitativo di social housing londinese, nel quale ho abitato per alcuni anni. Il film, da me diretto tra il 2017 e il 2020, segue il percorso esistenziale ed emotivo di alcuni residenti dell’Aylesbury mentre si fa strada il lungo processo di demolizione dello stesso. Nel ripercorrere il processo di realizzazione del film e attraverso l’analisi di alcune sequenze del film finito, questo articolo propone uno ‘sguardo di ascolto’ per condurre ricerca sul campo attraverso il mezzo filmico.
High temperature solid-catalized transesterification for biodiesel production
2010
Biodiesel has become more attractive recently because of its environmental benefits and the fact that it is made from renewable resources. Biodiesel is a mixture of monoalkyl esters of long chain fatty acids derived from renewable feed stock like vegetable oils and animal fats, mainly made of fatty acid glycerides. It is produced by transesterification processes in which oil or fat are reacted with a monohydric alcohol in the presence of a catalyst. The transesterification process is affected by reaction conditions, alcohol to oil molar ratio, type of alcohol, type and amount of catalysts, temperature and purity of reactants. Heterogeneous acid catalysts are quite efficient in promoting the…
Sui lavori di recupero del patrimonio storico-artistico dell'auditorium San Vito di Barcellona Pozzo di Gotto (Messina)
2010
Italian Abstract: I lavori di recupero del patrimonio storico artistico della chiesa di San Vito, recentemente eseguiti, hanno permesso di riscoprire, anche sulla scorta delle informazioni contenute in numerosi documenti, l’identita storico-architettonica di questo importante monumento barcellonese, che si ripropone nel gradevole connubio tra barocco, pitture policrome e pietra calcarea che fu generato dalla simbiosi tra la facies seicentesca e quella settecentesca della struttura e che era stato disperso negli ultimi due secoli.English Abstract: The jobs of recovery of the artistic historical patrimony of the church St. Vito of Barcellona Pozzo di Gotto (Messina) has allowed to rediscover,…