Results 31 to 40 of about 400 (153)

Evolution of the Post-Barreiras Sediments in the coastal zone of São Luís Basin, Maranhão, Brazil [PDF]

Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2013
The Post-Barreiras Sediments have been poorly studied,despite their interest for reconstituting sea-level fluctuations and the tectonic history in the Quaternary.
Dilce de Fátima Rossetti., Renê Rojas Rocca, Sonia Hatsue Tatumi   +2 more
doaj  

Powdered hibiscus anthocyanin‐nanofibril complexes as natural colourants: Stability and application in yoghurt and soft candy

Coloration Technology, EarlyView.
Abstract The instability of anthocyanins limits their application as natural food colorants. This study aimed to enhance the stability of anthocyanins extracted from Hibiscus sabdariffa through copigmentation with protein nanofibrils produced from pea, rice, gluten and whey isolates. Linear and curly nanofibril structures were prepared and incorporated
Vildan Eyiz, İsmail Tontul, Selman Türker   +2 more
wiley   +1 more source

Iron oxides in plinthic soils on sedimentary deposits in northeastern Brazil

Revista Brasileira de Ciência do Solo, 1999
This study was conducted to examine the distribution and nature of Fe oxides in plinthic soils on the sediments of Barreiras Group (in the state of Piauí) and Itapecuru Formation (in the state of Maranhão) in Northeastern Brazil.
R. J. Heck, A. R. Mermut, M. C. Santos
doaj   +1 more source

Sleep Health of Athletes of Different Sports: Translation and Validation of the Athlete Sleep Screening Questionnaire to Portuguese

Journal of Sleep Research, EarlyView.
ABSTRACT This study aimed to translate and validate the Athlete Sleep Screening Questionnaire (ASSQ) into Portuguese and assess the sleep health of athletes using the ASSQ. Translation followed established scientific guidelines. A sample of 246 Portuguese athletes from various sports completed the ASSQ, the Pittsburgh Sleep Quality Index (PSQI) and the
João Barreira, Júlio A. Costa, João Brito, Vasco Cardoso, Cátia Reis   +4 more
wiley   +1 more source

Green Synthesis of Silver Nanoparticles Using Root Extract of Gomphrena vaga Mart.: Metabolomic Insights Into Nanoparticle Formation and Antimicrobial Activity

Nano Select, Volume 7, Issue 8, August 2026.
This study presents the green synthesis of ultrasmall silver nanoparticles using Gomphrena vaga Mart. root extract. The nanoparticles synthesized were stable and showed good broad‐spectrum antibacterial activity against Gram‐positive and Gram‐negative bacteria in initial studies.
Uedson da Silva das Neves, Thyerre Santana da Costa, Symone Costa de Castro, Maelson Cardoso Lacerda, Mauro Alves Bueno, Ljubica Tasic   +5 more
wiley   +1 more source

Spatial Econometric Analysis of Regional Aging: Evidence From German Counties

Population, Space and Place, Volume 32, Issue 6, August 2026.
ABSTRACT Regional demographic change is widely acknowledged to contribute to economic decline, making an understanding of the determinants of regional population aging crucial for designing effective policy interventions. However, research on these determinants remains limited, particularly at the sub‐national level.
Andree Ehlert
wiley   +1 more source

Use of hydrogeophysical data to determine the role of faults in the geometry of the Barreiras Aquifer, Brazil

Brazilian Journal of Geology
Characterizing the geometry of an aquifer is fundamental for determining the locations of more productive wells. Commonly, flow and hydraulic parameters, such as transmissivity, are related to the thickness of the aquifer, which emphasizes the importance
Isaac Vinícius Fagundes de Souza, Leandson Roberto Fernandes de Lucena, Francisco Hilário Rego Bezerra, José Braz Diniz Filho   +3 more
doaj   +1 more source

Assessing the evolutionary distinctiveness of a highly threatened plant group: The urgency to preserve a unique lineage of evolution in Brazil

PLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1223-1237, July 2026.
Brazil's diverse flora is under several threats, with many unique lineages facing extinction, particularly in biodiverse regions like the Cerrado and campo rupestre. This study sheds light on the conservation needs of Cambessedesia (Melastomataceae), an endemic genus with 95% of its species endangered, using an approach to rank and prioritise species ...
Najla Bastos Scheidegger, Raquel C. Pizzardo, Bruno Vilela, Thuane Bochorny, Juliana Gastaldello Rando   +4 more
wiley   +1 more source

Balancing tracks and trees: Assessing railroad impact on Brazilian biodiversity

PLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1345-1356, July 2026.
The Brazilian West–East Integration Railway (FIOL) aims to boost the national economy by improving commodity transport; however, it crosses three of Brazil's most biodiverse and fragile regions: the Caatinga, Cerrado and Atlantic Forest. Using digitised plant records and land‐use analyses, our study reveals significant vegetation loss within the ...
Ana Luiza Silva Rocha, Anselmo Nogueira, Matheus Colli‐Silva, Juliana Gastaldello Rando   +3 more
wiley   +1 more source

New Geological and Geophysical Data for the Geometric and Stratigraphic Characterization of the Alhandra Sub-basin (Southeast of Paraíba) [PDF]

Geologia USP. Série Científica, 2009
Some recent geological and geophysical reconnaissance studies carried out in the Alhandra Sub-basin (southern segmentof the Paraíba Basin) have revealed very interesting structural and stratigraphic behaviors that have not yet been described.Four ...
Benjamim Bley de Brito Neves, José do Patrocínio Tomaz Albuquerque, José Moacyr Vianna Coutinho, Francisco Hilário Rego Bezerra   +3 more
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