Results 41 to 50 of about 1,494 (197)

Study of the elemental composition of saliva of smokers and nonsmokers by X-ray fluorescence [PDF]

open access: yes, 2016
"Available online 09 September 2016"Cigarette smoking is a serious public health problem. According to data from the World Health Organization, it is estimated that currently more than 1.2 billion people worldwide do tobacco use and that smoking-related ...
Aranha, Norberto   +6 more
core   +1 more source

Análisis bioquímico del micelio del hongo Hormoconis resinae en la corrosión de aleaciones aeronáuticas de aluminio [PDF]

open access: yes, 2007
Las diferencias entre el comportamiento corrosivo y no corrosivo de una cepa del hongo Hormoconis resinae sobre aluminio y sus aleaciones aeronáuticas se explicarían a través de análisis bioquímicos del micelio.
Araya, R.   +3 more
core  

Advancements and Challenges in the Production of Biosurfactants: A Path Toward Sustainable Surfactant Alternatives

open access: yesChemBioEng Reviews, Volume 13, Issue 1, February 2026.
Microorganisms generate versatile biosurfactants with a wide range of uses. Although cost issues still exist, industrial interest is growing because to the advantages of sustainability, which are enhanced by genetic engineering; life cycle evaluation is crucial for scalable, environmentally responsible production.
Lavanya M., Rishabh Agarwala
wiley   +1 more source

Extraction and Activity of O-acetylserine(thiol)lyase (OASTL) from Microalga Chlorella sorokiniana [PDF]

open access: yes, 2017
O-acetylserine(thiol)lyase (OASTL) is an enzyme catalysing the reaction of inorganic sulphide with O-acetylserine to form the S-containing amino acid L-cysteine.
Carfagna, Simona, Salbitani, Giovanna
core   +1 more source

Radioprotection of Sensitive Rat Tissues by Oligoelements Se, Zn, Mn Plus Lachesis Muta Venom [PDF]

open access: yesJournal of Radiation Research, 2011
In this study we first evaluated the general radioprotective efficacy of Se, Zn and Mn (4 µg/ml each) plus Lachesis muta venom (4 ng/ml) combination (O-LM) by determining survival on rats irradiated with lethal doses of gamma-rays. The aim of the second part of the study was to investigate the O-LM ability to prevent ionizing radiation-induced damage ...
Crescenti, Ernesto J. V.   +7 more
openaire   +3 more sources

Primary Auxin Response Genes GH3s and DAO1 Modulate Stamen Elongation in Arabidopsis thaliana and Solanum lycopersicum

open access: yesPhysiologia Plantarum, Volume 177, Issue 3, May/June 2025.
ABSTRACT Late stamen development is mainly regulated by auxin, which acts through the Auxin Response Factor 8 (ARF8) to promote stamen elongation in Arabidopsis thaliana. Auxin concentration in the stamens peaks at the beginning of late development and then declines, but the contribution of auxin inactivation to auxin homeostasis in stamen has never ...
Davide Marzi   +10 more
wiley   +1 more source

Eléments traces dans le sérum des enfants malnutris et bien nourris vivants à Lubumbashi et Kawama dans un contexte d'un environnement de pollution minière

open access: yesThe Pan African Medical Journal, 2016
INTRODUCTION: la place des éléments traces métalliques essentiels en nutrition humaine ne peut plus être ignorée. Les déficits d'apport, les carences secondaires souvent sous à estimées, et les carences iatrogènes font le lit de pathologies telles que ...
Aimée Mudekereza Musimwa   +3 more
doaj   +1 more source

Total antioxidant status in fresh and stored human milk from mothers of term and preterm neonates

open access: yesPediatrics and Neonatology, 2018
Background: Antioxidant defense of the body is assured by both endogenous and exogenous factors comprising several enzymes, vitamins, protein components and derivates and oligoelements.
Luminiţa Păduraru   +5 more
doaj   +1 more source

Effects of selenium, selenium‐enriched spirulina and phycocyanin on myocarditis stress parameters on LPS‐induced injury in H9c2 ventricular cardiomyoblasts

open access: yesPhysiological Reports, Volume 13, Issue 10, May 2025.
Abstract Myocarditis is strongly represented in septic patients and is associated with a higher mortality rate. Spirulina platensis (Spi), a blue‐green algae, has anti‐inflammatory properties and can be enriched with selenium, an antioxidant essential oligoelement.
Thomas Castel   +4 more
wiley   +1 more source

Níveis de ferro, cobre e zinco em colostro de puérperas adultas de recém-nascidos a termo e pré-termo, segundo variáveis maternas e socioeconômicas Levels of iron, copper and zinc in the colostrum of adult puerpera of term and pre-term infants, as a function of maternal and socioeconomic variables

open access: yesRevista Brasileira de Saúde Materno Infantil, 2002
OBJETIVOS: descrever os níveis de Fe, Cu e Zn em amostras de colostro de puérperas adultas brasileiras de recém-nascidos a termo (RNAT) e pré-termo (RNPT) e avaliar a influência das variáveis maternas (idade materna, estado nutricional pré-gestacional ...
Roseli S. S. da Costa   +5 more
doaj   +1 more source

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