Results 81 to 90 of about 4,450,726 (377)

Curvature in causal BD-type inflationary cosmology

open access: yes, 2004
We study a closed model of the universe filled with viscous fluid and quintessence matter components in a Brans-Dicke type cosmological model. The dynamical equations imply that the universe may look like an accelerated flat Friedmann-Robertson-Walker ...
A.G. Riess   +22 more
core   +1 more source

Associations of Sleep and Shift Work with Osteoarthritis Risk

open access: yesArthritis Care &Research, Accepted Article.
Objective Daily rhythms may be critical for maintaining homeostasis of joint tissues. We aimed to investigate the relationships between circadian clock disruption, sleep, and osteoarthritis (OA) risk in humans. Methods In the UK Biobank, a prospective 500,000‐person cohort, we evaluated associations between sleep duration, sleeplessness/insomnia, and ...
Elizabeth L. Yanik   +5 more
wiley   +1 more source

Paralisia bilateral das cordas vocais: causas e sua abordagem – análise dos últimos 12 anos

open access: yesRevista Portuguesa Otorrinolaringologia e Cirurgia de Cabeça e Pescoço
Objetivos: Analisar os casos de paralisia bilateral das cordas vocais (PBCV) diagnosticados no serviço de Otorrinolaringologia do Hospital Garcia de Orta. Alertar para causas raras desta entidade e seu tratamento.
Cláudia Santos   +5 more
doaj   +1 more source

Perfil audiométrico das crianças com diagnóstico de infecção congénita por citomegalovírus – Dados de 9 anos de consulta de surdez infantil

open access: yesRevista Portuguesa Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, 2019
A infecção congénita por citomegalovírus é a infecção congénita mais comum no recém-nascido. Estima-se que 1% dos recém-nascidos esteja infectado pelo vírus.
Sílvia Fidalgo Alves   +4 more
doaj   +1 more source

Kuster Opens Lead In CD2 10/28/14 [PDF]

open access: yes, 2014
With a week to go before the general election, District 2 Congresswoman Ann Kuster has opened a lead over her Republican challenger Marilinda Garcia.
Survey Center, UNH
core   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

Underuse of reperfusion therapy with systemic thrombolysis in high-risk acute pulmonary embolism in a Portuguese center

open access: yesRevista Portuguesa de Cardiologia
Introduction: Reperfusion therapy is generally recommended in acute high-risk pulmonary embolism (HR-PE), but several population-based studies report that it is underused.
Mariana Martinho   +15 more
doaj   +1 more source

Lesões por arma de fogo em ORL

open access: yesRevista Portuguesa Otorrinolaringologia e Cirurgia de Cabeça e Pescoço, 2010
O aumento da violência urbana determina a existência de um maior número de doentes com ferimentos por projécteis de armas de fogo a recorrerem aos Serviços de Saúde de Urgência.
Marta Monteiro   +5 more
doaj   +1 more source

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

open access: yesAdvanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi   +3 more
wiley   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

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