Results 71 to 80 of about 3,962,790 (302)

Um estudo de caso ligado ao sexo em Python regius (Serpentes: Boidae), com novas ideias sobre a determinação sexual em Henophidia

open access: yesPhyllomedusa: Journal of Herpetology, 2016
Em 2002, um herpetoculturista identificou uma característica fenotípica única, o Brilho Coral (Coral Glow - CG), em um píton-bola (Python regius), e realizou cruzamento do indivíduo para produzir descendentes com aparência similar.
Christopher S. Mallery Jr   +1 more
doaj  

Mudança no perfil de causas de morte após investigação de óbitos hospitalares em Belo Horizonte, 2017 [PDF]

open access: yesRevista Brasileira de Epidemiologia
RESUMO Introdução: Óbitos declarados com causas mal definidas, ou causas garbage (CG), comprometem a análise da mortalidade e sua utilização para planejamento e avaliação de políticas públicas de saúde.
Paulo Roberto Lopes Corrêa   +5 more
doaj   +3 more sources

β‐Adrenergic Signaling Promotes Anti‐Tumor Immunity in TP53‐mutant Oral Squamous Cell Carcinoma

open access: yesAdvanced Science, EarlyView.
β‐adrenergic stimulation enhances anti‐tumor immunity in TP53‐deficient oral squamous cell carcinoma by inducing tumor‐derived secretion of CXCL10, which attracts and activates cytotoxic CD8+ T cells. The findings demonstrate that β‐adrenergic signaling alters tumor–immune interactions via CXCL10‐mediated paracrine activation, revealing a neuro‐immune ...
Frederico O. Gleber‐Netto   +20 more
wiley   +1 more source

Cryo‐EM Structures Reveal the Molecular Basis of Asymmetric Allosteric Activation by MMOB in the Hydroxylase of Soluble Methane Monooxygenase

open access: yesAdvanced Science, EarlyView.
Cryo‐EM analysis reveals an asymmetric MMOH–MMOB complex with distinct protomers, where MMOB binding triggers structural rearrangements from the surface to the active site. This conformational asymmetry shortens the Fe···Fe distance to 2.7 Å in one protomer, forming a geometry suitable for O2 activation and supporting a sequential catalytic mechanism ...
Yunha Hwang   +9 more
wiley   +1 more source

IDENTIFICAÇÃO DE TERPENOS NO ÓLEO ESSENCIAL DOS FRUTOS DE Campomanesia adamantium (Cambessédes) O. Berg – MYRTACEAE

open access: yesRevista do Instituto Florestal, 2006
O presente trabalho teve como objetivo identificar os componentes químicos voláteis que contribuem para o aroma agradável exalado pelos frutos de Campomanesia adamantium, Myrtaceae, popularmente conhecida por gabiroba ou guabiroba comum no cerrado.
Maria Isabel Vallilo   +2 more
doaj   +1 more source

Semiconducting Polymer Nanoparticles Enable Light‐Controlled Bidirectional Modulation of Nitric Oxide in Endothelial Cells

open access: yesAdvanced Science, EarlyView.
Bimodal modulation of nitric oxide in endothelial cells is achieved by light‐sensitive polymer nanoparticles. In dark, P3HT/PEDOT:PSS NPs boost intracellular ·NO, upregulate both endothelial and induced nitric oxide synthase, and drive a metabolic shift toward glycolysis.
Camilla Marzuoli   +12 more
wiley   +1 more source

Volatile compounds and quality analysis in commercial medicinal plants of Camellia sinensis

open access: yesCiência Rural, 2019
: The interest in the use of green tea (Camellia sinensis) (L.) Kuntze (Theaceae) products have increased in the last few years due to its medicinal properties. In the present study, we proposed that headspace solid phase microextraction, in combination
Joyce Castro de Menezes   +5 more
doaj   +1 more source

Dorsal Raphe VIP Neurons Are Critical for Survival‐Oriented Vigilance

open access: yesAdvanced Science, EarlyView.
DRNVIP neurons in mice and primates are strategically positioned to influence the central extended amygdala via feedback loops. They regulate the excitability of PKC‐δ neurons in the ovBNST and CeA through glutamate release. Their ablation heightens activity in these regions, disrupts active‐phase sleep architecture, enhances risk assessment behaviors ...
Adriane Guillaumin   +15 more
wiley   +1 more source

Aislamiento e identificación de volátiles de Physalis philadelphica LAM [PDF]

open access: yes, 2007
El objetivo de este trabajo fue aislar e identificar los componentes volátiles del tomate de cáscara Physalis philadelphica Lam. Por lavado con hexano, aireación dinámica (AD) y micro extracción en fase sólida (MEFS) se aislaron volátiles de P ...
CALYECAC CORTERO, HUMBERTA GLORIA   +7 more
core  

Non‐Uniform Space‐Time‐Coding Modulation for Low‐Complexity Diagnostics of Reconfigurable Intelligent Surfaces

open access: yesAdvanced Electronic Materials, EarlyView.
A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen   +8 more
wiley   +1 more source

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