Search results for "ToF"
showing 10 items of 841 documents
‘John Tiptoft’
1997
Una voce di enciclopedia su John Tiptoft, aggiornata con bibliografia
The Light Side of Passwords : Turning Motivation from the Extrinsic to the Intrinsic
2019
There are many good and bad aspects to password authentication. They are mostly without cost, securing many accounts and systems, and allowing users access from anywhere in the world. However, passwords can elicit dark side phenomena, including security technostress; with many users feeling negatively towards them, as they struggle to cope with the sheer numbers required in their everyday lives. Much research has attempted to understand users’ interactions with passwords, examining the trade-off between security, memorability, user convenience, and suggesting techniques to manage them better. However, users continue to struggle. Many studies have shown that users are more concerned with goa…
Brisures du romaneque: 'La Malédiction de la Madone', ou d'une pratique ironique du docufiction.
2023
La Malédiction de la Madone, pubblicato nel 2022, è il primo romanzo in cui Philippe Vilain, scrittore tra i maggiori rappresentanti dell’autofinzione, ab- bandona la narrazione in prima persona per un “docufiction” in terza persona basato sulla vita della camorrista Pupetta Maresca. questo cambio di rotta, an- cor più sorprendente per un autore come Vilain che aveva sempre vilipeso que- sto genere letterario, è occasione di mettere in questione le sue concezioni del romanzo e della letteratura. Ne vien fuori una narrazione tesa tra l’aspirazione a far corpo unico con la sua precedente produzione letteraria e le condizioni im- poste dalla “docufinzionalizzazione” della storia. La Maléd…
Particle chemical properties in the vertical column based on aircraft observations in the vicinity of Cape Verde Islands
2011
During the second Saharan Mineral Dust Experiment (SAMUM-2) field campaign, particles with geometric diameters (d) between ∼0.1 and 25 μm were collected on board of the Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center, DLR) Falcon aircraft. Size, chemical composition and mixing state of aerosols sampled (spatially and vertically resolved) along the West African coastline and in the Cape Verde Islands region were determined by electron microscopy. A pronounced layer structure of biomass-burning aerosol and desert dust was present for all days during the sampling period from 23 January to 6 February. The aerosol composition of the small particles (d < 0.5 μm) was highly v…
Papel de la mitocondria en la neurodegeneración de las neuropatías periféricas
2014
La disfunción mitocondrial tiene severas consecuencias a nivel celular, y está íntimamente relacionada con el proceso de envejecimiento. Pero además, la mitocondria juega un importante papel en la muerte celular progresiva característica de algunos trastornos neurodegenerativos, de forma que la disfunción mitocondrial ha surgido como un denominador común en varias enfermedades neurodegenerativas. En la presente Tesis Doctoral nos hemos centrado en el estudio de los mecanismos patogénicos que conducen a la degeneración neuronal de dos neuropatías periféricas diferentes, pero relacionadas: ataxia de Friedreich (FRDA) y la enfermedad de Charcot-Marie-Tooth (CMT) tipos 4A/2K. Ambas enfermedades…
Study of mitochondrial dynamics and function and autophagy and their relationship with cardiovascular complications in type 2 diabetes
2021
La diabetes tipo 2 (T2D) es una enfermedad metabólica crónica de base inflamatoria cuya incidencia ha ido aumentando en los últimos años. Esta enfermedad metabólica también aumenta la predisposición a sufrir complicaciones cardiovasculares, que ponen en peligro la vida del paciente. Por ello, profundizar en el origen celular y molecular de la T2D facilitaría su prevención temprana y el retraso de las complicaciones cardiovasculares. En este contexto, esta tesis doctoral pretende describir algunas de las vías homeostáticas implicadas en la fisiopatología de la T2D en los leucocitos humanos. En concreto, se centra en el estudio de las alteraciones en la función mitocondrial, la inflamación, l…
Estudio del efecto de la cirugía de bypass gástrico en Y de Roux sobre los mecanismos moleculares asociados a la fisiopatología de la obesidad
2022
La obesidad es una enfermedad multifactorial e incapacitante que se caracteriza por una sobrecarga metabólica del tejido adiposo (AT), la inflamación crónica de bajo grado, el estrés oxidativo y la disfunción endotelial. En la actualidad, la prevalencia mundial de la obesidad está aumentando, donde el estilo de vida influye de manera significativa en la resolución de esta enfermedad. En este contexto, ha aumentado la demanda de estrategias para revertir las comorbilidades y frenar su aumento. El procedimiento de bypass gástrico en Y de Roux (RYGB) es una herramienta eficaz para la pérdida de peso y la remisión de las comorbilidades metabólicas de la obesidad, aunque se desconocen los mecani…
Approccio alla caratterizzazione di un lembo di bosco vetusto: il caso di Monte Egitto
2017
An integrated approach to characterize an old growth forest patch; the Monte Egitto case study Old growth forests, i.e. forests which have achieved a remarkable age without or with a very limited disturbance, are nowadays subject of detailed studies in order to understand their characters and capacity of ecosystems services providing. In Sicily only few wooded areas are classified as old growth forest, following the heavy land use change toward agriculture during the centuries. This paper reports the results of a study carried out to characterize the vegetation of a little crater on the Mount Etna, where a residual open wood of Quercus congesta (an endemic oak of Southern Italy) survived th…
Analysis of the impact of sex and age on the variation in the prevalence of antinuclear autoantibodies in Polish population: a nationwide observation…
2022
AbstractThe detection of antinuclear autoantibody (ANA) is dependent on many factors and varies between the populations. The aim of the study was first to assess the prevalence of ANA in the Polish adult population depending on age, sex and the cutoff threshold used for the results obtained. Second, we estimated the occurrence of individual types of ANA-staining patterns. We tested 1731 patient samples using commercially available IIFA using two cutoff thresholds of 1:100 and 1:160. We found ANA in 260 participants (15.0%), but the percentage of positive results strongly depended on the cutoff level. For a cutoff threshold 1:100, the positive population was 19.5% and for the 1:160 cutoff th…
Measurement of the α ratio and (n,γ) cross section of 235U from 0.2 to 200 eV at n_TOF
2020
We measured the neutron capture-to-fission cross-section ratio (α ratio) and the capture cross section of 235U between 0.2 and 200 eV at the n_TOF facility at CERN. The simultaneous measurement of neutron-induced capture and fission rates was performed by means of the n_TOF BaF2 Total Absorption Calorimeter (TAC), used for detection of γ rays, in combination with a set of micromegas detectors used as fission tagging detectors. The energy dependence of the capture cross section was obtained with help of the 6Li(n, t) standard reaction determining the n_TOF neutron fluence ; the well-known integral of the 235U(n, f) cross section between 7.8 and 11 eV was then used for its absolute normalizat…