A theory for multiple collisions of rigid solids and numerical simulation of granular flow

AbstractGranular materials such as soils are often modeled as a collection of discrete bodies. In this paper we apply a strategy for soil modeling which is based on a discretization of the media with rigid polygons: a mechanical description of instantaneous collisions, based on the principle of virtual work is presented. Finally, a numerical example based on the proposed theory is treated. A package of randomly generated particles has been arranged on a skid, simulating the behaviour of a landslide

A finite element modelling of thermo-hydro-mechanical behaviour and numerical simulations of progressing spalling front

This paper presents a coupled thermo-hydro-mechanical (THM) model enriched with a buckling-type criterion for progressive spalling. In the first part of the paper, a general fully coupled multi-phase THM model describing the behaviour of concrete at moderate and high temperatures is presented. Then the spalling criterion and its numerical implementation in the framework of the finite element method are presented. Finally, a simple 1D numerical example will illustrate the effectiveness of the implemented numerical approach

BENEFÍCIOS DA FACILITAÇÃO NEUROMUSCULAR PROPRIOCEPTIVA EM MULHERES MASTECTOMIZADAS: UM ESTUDO PILOTO

O carcinoma mamário pode ser tratado de diversas formas, incluindo a mastectomia. A mastectomia é caracterizada como uma cirurgia total ou parcial da mama, podendo ou não ser associada à excisão dos gânglios linfáticos axilares. Podem aparecer sequelas e complicações no período pós-operatório. A facilitação neuromuscular proprioceptiva (FNP) é uma técnica de abordagem global em que procedimentos básicos da facilitação permitem ao terapeuta ajudar seus pacientes a atingir o máximo da sua função motora eficiente. O objetivo deste estudo foi avaliar os efeitos do Método de FNP em mulheres pós mastectomizadas. No estudo foram utilizadas quatro pacientes pós-mastectomizadas, tratadas com a técnica de FNP. Foram realizadas 10 sessões de 30 minutos. Na primeira e última sessão foram aplicadas as técnicas de avaliação: perimetria (linfedema), dinamometria (força muscular) e goniometria (amplitude articular). Os resultados da avaliação do linfedema demonstram que pode haver redução do edema com a aplicação da técnica de FNP, os quais demonstraram diferença apenas em membro superior direito. Nenhum dos testes apresentou diferença significativa. Porém, mais estudos são necessários para verificar os efeitos da técnica FNP em mulheres mastectomizadas.Palavras-chave: Carcinoma mamário; FNP; fisioterapia

Metabolic fuel use after feeding in the zebrafish (Danio rerio): A respirometric analysis

We used respirometric theory and a new respirometry apparatus to assess, for the first time, the sequential oxidation of the major metabolic fuels during the post-prandial period (10 h) in adult zebrafish fed with commercial pellets (51% protein, 2.12% ration). Compared with a fasted group, fed fish presented peak increases of oxygen consumption (78%), and carbon dioxide (80%) and nitrogen excretion rates (338%) at 7-8 h, and rates remained elevated at 10 h. The respiratory quotient increased slightly (0.89 to 0.97) whereas the nitrogen quotient increased greatly (0.072 to 0.140), representing peak amino acid/protein usage (52%) at this time. After 48-h fasting, endogenous carbohydrate and lipid were the major fuels, but in the first few hours after feeding, carbohydrate oxidation increased greatly, fueling the first part of the post-prandial specific dynamic action, whereas increased protein/amino acid usage predominated from 6 h onwards. Excess dietary protein/amino acids were preferentially metabolized for energy production. © 2019. Published by The Company of Biologists Lt

The Compact Linear Collider (CLIC) - 2018 Summary Report

The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear $e^+e^-$ collider under development at CERN. Following the CLIC conceptual design published in 2012, this report provides an overview of the CLIC project, its current status, and future developments. It presents the CLIC physics potential and reports on design, technology, and implementation aspects of the accelerator and the detector. CLIC is foreseen to be built and operated in stages, at centre-of-mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively. CLIC uses a two-beam acceleration scheme, in which 12 GHz accelerating structures are powered via a high-current drive beam. For the first stage, an alternative with X-band klystron powering is also considered. CLIC accelerator optimisation, technical developments and system tests have resulted in an increased energy efficiency (power around 170 MW) for the 380 GeV stage, together with a reduced cost estimate at the level of 6 billion CHF. The detector concept has been refined using improved software tools. Significant progress has been made on detector technology developments for the tracking and calorimetry systems. A wide range of CLIC physics studies has been conducted, both through full detector simulations and parametric studies, together providing a broad overview of the CLIC physics potential. Each of the three energy stages adds cornerstones of the full CLIC physics programme, such as Higgs width and couplings, top-quark properties, Higgs self-coupling, direct searches, and many precision electroweak measurements. The interpretation of the combined results gives crucial and accurate insight into new physics, largely complementary to LHC and HL-LHC. The construction of the first CLIC energy stage could start by 2026. First beams would be available by 2035, marking the beginning of a broad CLIC physics programme spanning 25-30 years