Results 41 to 50 of about 33,873 (194)

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

Gamma radiation of the street corners from South zone of Natal city, Rio Grande do Norte, Brazil

Brazilian Journal of Radiation Sciences, 2022
This research had the objective of studying the absorbed dose of the street corner intersections from the South zone of Natal city, Brazil. This city grew up on dune lands, on siliciclastic rocks from Barreiras Formation, these dunes are quartz-sand and ...
Thomas Ferreira da Costa Campos, Kenji Freire Motoki, Valéria Fonsêca da Silva Pastura, Susanna Eleonora Sichel, Estefan Monteiro Fonseca   +4 more
doaj   +1 more source

Comparative measurements of carbon dioxide fluxes from two nearby towers in a central Amazonian rainforest: the Manaus LBA site [PDF]

, 2002
Forests around Manaus have staged the oldest and the longest forest-atmosphere CO2 exchange studies made anywhere in the Amazon. Since July 1999 the exchange of CO2, water, and energy, as well as weather variables, have been measured almost continuously ...
Araújo, A.C., Culf, A.D., Dallarosa, R., Elbers, J.A., Gash, J.H.C., Kabat, P., Kruijt, B., Manzi, A.O., Nobre, A.D., Randow, C., von, Stefani, P., Valentini, R.   +11 more
core   +2 more sources

Integrative taxonomy reveals two new species of whiptail catfishes Loricaria (Siluriformes: Loricariidae) from northeastern Brazil

Journal of Fish Biology, EarlyView.
Abstract Two new species of whiptail catfish, Loricaria (Siluriformes: Loricariidae), were discovered in the Munim and Itapecuru river basins, Maranhão State, northeastern Brazil, through an integrative taxonomic approach combining morphology and mitochondrial DNA.
Ananda. C. Serejo‐Saraiva, Nivaldo M. Piorski, Felipe P. Ottoni, Mark H. Sabaj, Sergio M. Q. Lima   +4 more
wiley   +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

ABCA12 Frameshift Deletion in Domestic Cats With Ichthyosis Fetalis

Veterinary Dermatology, EarlyView.
ABSTRACT Background Ichthyosis fetalis (IF), also known as harlequin ichthyosis, is a rare and often fatal autosomal recessive congenital skin disorder. It is characterized by thickened, hard skin plaques and deep skin fissures that limit mobility and cause malformations of the eyes, lips and ears.
Jeanna M. Blake, Melissa P. Swan, Kari J. Ekenstedt   +2 more
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

American manatees adjust their diet composition and trophic niche breadth across different coastal regions

Limnology and Oceanography Letters, Volume 11, Issue 3, May 2026.
Abstract Marine mammals can exhibit high plasticity in foraging strategies, but how such plasticity is driven by environmental conditions is poorly understood. The American manatee (Trichechus manatus), a large, endangered herbivore, inhabits marine, estuarine, and freshwater environments.
Camila Carvalho de Carvalho, Emma Deeks, Leandro L. Ciotti, Silvina Botta, Miriam Marmontel, Margareth Copertino, Fábia de Oliveira Luna, Fernanda Niemeyer Löffer Attademo, Vitor Luz Carvalho, João Carlos Gomes Borges, Alexandra Fernandes Costa, Renata Emin‐Lima, Pavel Kratina, Eduardo Resende Secchi   +13 more
wiley   +1 more source

GEOTECHNICAL PROPERTIES OF THE BARREIRAS FORMATION SEDIMENTS IN THE CLIFFS OF BARRA DE TABATINGA, EASTERN COAST OF RIO GRANDE DO NORTE / BRAZIL

, 2020
In the state of Rio Grande do Norte exists outcrops of cliffs that belongs to the Barreiras Formation, which cities and infrastructure works are developed on. In this region, mass movements are reported in relevant proportions, especially in rainy season.
morais, Anderson Dantas, dos Santos JR, Olavo Francisco, de Freitas Neto, Osvaldo   +2 more
openaire   +2 more sources

Phenolic Compounds: From Traditional Uses to Innovative Applications and Everything in Between

Molecular Nutrition &Food Research, Volume 70, Issue 9, 13 May 2026.
This review deals with many aspects related to the study of phenolic compounds, starting with advances in extraction, detection, and quantification methods, going through bioavailability, bioactivity, and beneficial health properties, and discussing antioxidant and antimicrobial uses and mechanisms.
Marcela de Sá Barreto da Cunha, Cristina Maria Turim Santos Miguel, Emília Maria França Lima, Uelinton Manoel Pinto, Cláudia Vieira Prudêncio, Svetoslav Dimitrov Todorov   +5 more
wiley   +1 more source