Search results for "LABOR"

Mechanical properties of provisional dental materials: A systematic review and meta-analysis

2018

Provisional restorations represent an important phase during the rehabilitation process, knowledge of the mechanical properties of the available materials allows us to predict their clinical performance. At present, there is no systematic review, which supports the clinicians' criteria, in the selection of a specific material over another for a particular clinical situation. The purpose of this systematic review and meta-analysis was to assess and compare the mechanical properties of dimethacrylates and monomethacrylates used in fabricating direct provisional restorations, in terms of flexural strength, fracture toughness and hardness. This review followed the PRISMA guidelines. The searche…

Elemental Bromine Production by TiO2 Photocatalysis and/or Ozonation

2016

Significant production of elemental bromine (Br2 ) was observed for the first time when treating bromide containing solutions at acidic pH, with TiO2 photocatalyst, ozone, or a combination thereof. Br2 selectivities up to approximately 85 % were obtained and the corresponding bromine mass balance values satisfied. The process is general and may be applied at a laboratory scale for green bromination reactions, or industrially as a cheap, safe, and environmentally sustainable alternative to the currently applied bromine production methods.

Observation of s-Channel Production of Single Top Quarks at the Tevatron

2014

We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7fb-1 per experiment. The measured cross section is σs=1.29-0.24+0.26pb. The probability of observing a statistical fluctuation of the background to a cross section of the observed size or larger is 1.8×10-10, corresponding to a significance of 6.3 standard deviations for the presence of an s-channel contribution to the production of single-top quarks. © 2014 American Physical Society.

LAb book IBBC_22_23

2022

Este documento ha sido revisado por el Servicio de política Linguística. Su labor ha sido muy importante para la correción del documento. Este documento contiene el cuadernillo de prácticas que utilizan los alumnos de Integración Bioquímica y Biología Molecular, asignatura de segundo año del grado de Medicina. El documento describe las diferentes sesiones de prácticas que se realizan en el laboratorio. Para cada práctica, se incluye una pequeña base teórica, así como el protocolo de cada sesión de laboratorio. Además, en algunos casos se incluyen preguntas relacionadas con las prácticas, para ser resueltas por el alumno. This document contains the lab book used by the Integration of Biochem…

Percepción del alumnado sobre evaluación formativa y compartida: conectando dos universidades a través de la Blogosfera

2017

The aim of this study was to evaluate differences in physical education students’ perception on an educational innovation based on formative and peer assessment through the blogosphere. The sample was made up of 253 students from two Spanish universities. Data was collected using a self-reported questionnaire and t tests were employed in order to find differences among students’ groups. Results show significant differences in almost all of the items on which the students were questioned. Basque students were more satisfied with the assessment tool used than the Valencian students. Students found the blogosphere more active, meaningful, functional and motivating and that it made for collabor…

El laboratorio "encuentro con los ecritore" y el proyecto PEN .

2011

The Protection of the Weaker Parties in the Platform Economy

2018

Known by many names – platform, sharing, peer-to-peer (p2p), collaborative economy, and so on - entirely new business models have emerged in recent years, whereby online platforms use digital technologies to connect distinct groups of users in order to facilitate transactions for the exchange of assets and services. This dramatic shift in business organisation and market structure has opened an intense debate on the persisting need for those regulatory measures that typically protect the weaker party in bilateral business-to-consumer transactions. Widespread calls for a more “levelled playing field” makes a strong argument for reconsidering the scope of regulation and delegating regulatory …

A visual framework to create photorealistic retinal vessels for diagnosis purposes

2020

The methods developed in recent years for synthesising an ocular fundus can be been divided into two main categories. The first category of methods involves the development of an anatomical model of the eye, where artificial images are generated using appropriate parameters for modelling the vascular networks and fundus. The second type of method has been made possible by the development of deep learning techniques and improvements in the performance of hardware (especially graphics cards equipped with a large number of cores). The methodology proposed here to produce high-resolution synthetic fundus images is intended to be an alternative to the increasingly widespread use of generative ad…

An application of Matlab c on Dimensional Nonlinear Programming

2014

[EN] Nonlinear Programming (NLP) is a widely applicable tool in modeling real life problems applied to business, economics and engineering. Is to maximize or minimize a scalar field whose domain is given as a set of constraints given by equalities and/or inequalities not necessarily linear. In this paper we present a virtual laboratory to study the PNL graphically and numerically in the case of two variables

Pooling and expanding registries of familial hypercholesterolaemia to assess gaps in care and improve disease management and outcomes: Rationale and …

2016

WOS: 000393031600001