Results 51 to 60 of about 326,509 (183)

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

open access: yesHigh Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov   +4 more
wiley   +1 more source

Variation in Stabilization and Resuscitation Practices at Birth of Preterm Infants Among 12 National or Regional Neonatal Networks

open access: yesActa Paediatrica, EarlyView.
ABSTRACT Aim Neonatal resuscitation follows national or regional guidelines, but uptake varies in clinical practice. This study aimed to examine variations in reported delivery room practices for infants < 29 weeks' gestation across neonatal units in 12 networks of the International Network for Evaluating Outcomes in Neonates.
Maria Fernanda de Almeida   +676 more
wiley   +1 more source

Prognóstico em médio prazo da cintilografia de perfusão miocárdica de estresse na unidade de dor torácica Medium term prognostic value of stress myocardial perfusion scintigraphy in a chest pain unit

open access: yesArquivos Brasileiros de Cardiologia, 2007
OBJETIVO: Determinar o valor prognóstico da cintilografia de perfusão miocárdica (CPM) de estresse quando aplicada aos pacientes com suspeita de síndrome coronariana aguda (SCA).
Jader Cunha de Azevedo   +7 more
doaj   +1 more source

Deep reinforcement learning for multi‐restart metaheuristics: an environment design for a hybrid of unbiased exploratory search and covariance matrix adaptation evolution strategy

open access: yesInternational Transactions in Operational Research, EarlyView.
Abstract Multi‐restart metaheuristics can be highly effective for complex optimization problems, yet their performance depends critically on how restarts and algorithmic parameters are selected. This paper introduces a reinforcement learning approach for managing restart‐level decisions and parameter configurations in the UES–CMA‐ES hybrid ...
Antonio Bolufé‐Röhler, Bowen Xu
wiley   +1 more source

Associação entre fatores de risco para doença arterial coronariana e coronariopatia em pacientes submetidos a cintilografia de perfusão do miocárdio Association between risk factors for coronary artery disease and coronary disease in patients undergoing myocardial perfusion scintigraphy

open access: yesArquivos Brasileiros de Cardiologia, 2007
OBJETIVOS: Estabelecer o grau de associação entre fatores de risco cardiovascular e a presença de doença arterial coronária (DAC) em um grupo de pacientes submetidos a cintilografia de perfusão do miocárdio (CPM). MÉTODOS: Foram estudados 7.183 pacientes
Paulo Schiavom Duarte   +7 more
doaj   +1 more source

Melatonin seed priming: A climate‐smart, green strategy to enhance abiotic stress tolerance in plants

open access: yesJournal of Integrative Plant Biology, EarlyView.
This review synthesizes how melatonin seed priming preconditions seeds to enhance tolerance against diverse abiotic stresses. It highlights the underlying mechanisms and proposes an integrative roadmap of advanced molecular and breeding tools to design next‐generation, stress‐smart plants.
Ali Raza   +8 more
wiley   +1 more source

Gasto energético na marcha em pacientes com mucopolissacaridose Energy expenditure during gait in patients with mucopolysaccharidosis

open access: yesActa Ortopédica Brasileira, 2013
OBJETIVO: Avaliar o gasto energético na marcha em pacientes com mucopolissacaridose, utilizando uma metodologia simples e aplicável ao ambiente clínico.
Marcos Almeida Matos   +4 more
doaj  

Caracterização da região espaçadora 16-23S rDNA para diferenciação de estirpes de rizóbios utilizadas na produção de inoculantes comerciais no Brasil Characterization of the spacer region 16-23S rDNA for differentiation of strains of rhizobia used in the production of commercial inoculants in Brazil

open access: yesCiência Rural, 2012
A identificação de estirpes de rizóbio tem sido feita pela especificidade por hospedeiros e ensaios microbiológicos tradicionais. Por constituírem um grupo filogeneticamente heterogêneo, diferentes técnicas moleculares têm sido empregadas para auxiliar ...
Andréia Mara Rotta Oliveira   +5 more
doaj   +1 more source

Harnessing the Therapeutic Potential of Cell Secretomes and Extracellular Vesicles for Craniofacial Regenerative Applications

open access: yesJournal of Periodontal Research, EarlyView.
The scoping review summarizes the current preclinical and clinical evidence for the use of “cell‐free” therapies in craniofacial (periodontal, bone and soft‐tissue) regeneration. It also aims to highlight key challenges and strategies towards the clinical translation of these therapies.
Siddharth Shanbhag   +6 more
wiley   +1 more source

Botulinum-A toxin in the treatment of painful post-stroke nocturnal paroxysmal dystonia triggered by periodic limb movements of sleep: case report Toxina botulínica tipo A no tratamento da distonia paroxística noturna dolorosa pós-isquemia cerebral desencadeada por movimentos periódicos do sono: relato de caso

open access: yesArquivos de Neuro-Psiquiatria, 2006
INTRODUCTION: Sleep disorders presenting involuntary movements may be very annoying to patients, apart from their negative influence on sleep. OBJECTIVE: To report the use of botulinum type-A toxin (BoNT-A) to manage the case of a patient whose sleep was
Pedro A. Kowacs   +4 more
doaj   +1 more source
medicine
environmental science
computer science
engineering
chemistry
physics
biology
cintilografia
isquemia miocárdica
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