Results 221 to 230 of about 3,014,245 (329)

Brasil

open access: yesRebeca - Revista Brasileira de Estudos de Cinema e Audiovisual, 2016
openaire   +3 more sources

Diosgenin ameliorates silica‐induced tuberculosis in rats

open access: yesAnimal Models and Experimental Medicine, EarlyView.
Silicosis increases susceptibility to tuberculosis due to impaired macrophage function and oxidative stress. This study demonstrates that diosgenin, a steroidal saponin, significantly inhibits Mycobacterium smegmatis (IC₅₀ = 0.006 μg/mL), reduces lung fibrosis, and restores antioxidant enzyme levels (↑SOD, ↑CAT, ↓MDA) in silica‐exposed rats ...
Williams Asamoah Adu   +5 more
wiley   +1 more source

Ensaio sobre a Tectonica moderna do Brasil

open access: gold, 1951
Ruy Ozorio de Freitas
openalex   +2 more sources

Neuroimaging Biomarkers for Friedreich Ataxia: A Cross‐Sectional Analysis of the TRACK‐FA Study

open access: yesAnnals of Neurology, EarlyView.
Objective We aimed to quantify differences in the brain and spinal cord between Friedreich ataxia and controls, stratified by age and disease stage, including for the first time in young children. Methods TRACK‐FA is the largest prospective, longitudinal, multi‐modal neuroimaging study in Friedreich ataxia to date.
Nellie Georgiou‐Karistianis   +33 more
wiley   +1 more source

¿Brasil potencia?

open access: yes, 1979
"Este Artículo pertenece a la sección Arte, Letras, Espectáculos. "
openaire   +1 more source

Photo‐controlled Release of Urea Enables the Detection of Urea‐Urease Intermediates by cryo‐FTIR

open access: yesAngewandte Chemie International Edition, Accepted Article.
Caged compounds are a valuable tool to photocontrol the release of enzymatic substrates in a reaction. For example, caged urea molecules were proposed to control urea delivery to urease reactions and aid the determination of the catalytic mechanism of this enzyme.
Caterina Netto   +7 more
wiley   +1 more source

Novos Phaneropteridae do Brasil [PDF]

open access: gold, 1950
S. de Toledo Piza
openalex   +1 more source

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