Results 1 to 10 of about 5,263 (182)
Estado oxidante e antioxidante de crianças com bronquiolite aguda
Jornal de Pediatria, 2013 OBJECTIVE: Oxidative stress has been shown to contribute to the pathogenesis of acute and chronic lung inflammatory diseases. This article aimed to evaluate the oxidant/antioxidant status of children with acute bronchiolitis through the measurement of plasma total antioxidant capacity, total oxidant status, and oxidative stress index. METHODS: Children
Dundaroz, Rusen +5 more
doaj +6 more sources
NOVA ROTA DE SINTERIZAÇÃO DO CARBETO DE SÍLICIO EM ATMOSFERA OXIDANTE
Brazilian Journal of DevelopmentO método convencional de sinterização do carbeto de silício (SiC) apresenta custos consideravelmente inviáveis, uma vez que demanda a aplicação de elevadas temperaturas e uso de atmosfera inerte. Portanto, uma abordagem alternativa de sinterização foi estudada, utilizando fornos com temperaturas abaixo de 1700°C e atmosfera oxidante.
Rhayana Ayamy Yamaguchi Gomes da Costa +4 more
exaly +4 more sources
Avaliação do Efeito Pró-Oxidante no PP, em Blendas com PHB [PDF]
Polímeros Ciência e Tecnologia, 2013 O interesse por polímeros biodegradáveis tem aumentado devido ao baixo impacto ambiental dos mesmos. No entanto, muitos desses produtos disponíveis no mercado são frágeis, difíceis de processar e têm alto custo. Uma das técnicas para superar essas deficiências é através de blenda com outros polímeros.
Santos, Paulo A. +4 more
openaire +6 more sources
Lixiviación de calcopirita con ácido etilendiaminotetraacético (EDTA) en medio oxidante
EPISTEMUS, 2023 El cobre en la naturaleza se presenta en forma predominante como complejos sulfurados, calcopirita (CuFeS2), bornita (Cu5FeS4) y calcosina (Cu2S). La recuperación de cobre a partir de calcopirita por lixiviación es un proceso complicado debido a la estabilidad química de este mineral y conlleva el uso de sistemas complejos para el tratamiento en ...
Carlos Uriel Mendez-Velasco +3 more
openaire +3 more sources
Pigment molecular composition reveals significant information for visual communication
Functional Ecology, Volume 36, Issue 11, Page 2756-2762, November 2022., 2022 Read the free Plain Language Summary for this article on the Journal blog. Abstract Melanins are the most common pigments in vertebrates and, as such, fufill multiple adaptive functions, including honest signalling. This is the case of male pied flycatchers Ficedula hypoleuca, whose dorsal plumage, composed of black and grey feathers pigmented by ...
Ismael Galván
wiley +1 more source
Cuerpos lipídicos y estrés oxidante
Tequio, 2022 Oxidative stress is a characteristic of cell damage in various diseases since one of its primary effects is lipid peroxidation, with the consequent generation of toxic aldehydes and ketones. For their part, lipid droplets are ubiquitous and highly conserved cellular organelles responsible for storing neutral lipids.
Norma Serrano García +1 more
openaire +1 more source
Deficiencia de vitamina D, estrés oxidante y enfermedad
Tequio, 2022 The active form of vitamin D, 1α,25- dihydroxyvitamin D3 [1α,25(OH)2D3], is a steroid hormone whose biological actions are mediated through the vitamin D receptor (VDR). Globally, its deficiency is a major public health problem and is mainly due to insufficient exposure to sunlight. It is estimated that 50% of the world’s population has vitamin D
Joselyn Rojas Guadarrama +2 more
openaire +1 more source
Short communication: Clinical evaluation of pea sprout extract in the treatment of hair loss
Phytotherapy Research, Volume 34, Issue 2, Page 428-431, February 2020., 2020 Hair loss affects millions of people worldwide, but currently available treatment options are often dissatisfying due to side effects or limited efficacy. Pea sprout extract has been shown to improve hair density when applied topically, but its mode of action and effectiveness upon oral administration remain unknown.
Torsten Grothe +2 more
wiley +1 more source
Oxidantes y radicales libres en biomedicina
Revista de Medicina de la Universidad de Navarra, 2017 Las reacciones donde intervienen oxidantes y radicales han jugado un papel esencial en el origen de las formas de vida aerobias y son una parte integral de la homeostasis celular. Sin embargo y debido a los efectos tóxicos colaterales de esta presión oxidativa, de forma muy temprana en la evolución se desarrollaron los enzimas y factores antioxidantes ...
J. A. Casado +4 more
openaire +1 more source