Results 31 to 40 of about 1,327 (200)

Serum calcium and its relationship with immunoglobulin G (IgG) levels in prepartum buffaloes from the Venezuelan humid tropics

Revista Científica, 2023
The immune system partially recognizes specific antigens due to the role of calcium (Ca2+) as an intracellular second messenger that regulates the humoral immune response.
Juan Pablo Uzcátegui-Varela, Anacelmira Urbina Andueza, Janeth Caamaño Carrero   +2 more
doaj   +1 more source

Spatial and temporal variation of Peridinium umbonatum F. Stein, 1883 (Dinophyceae) and its relationship with total phytoplankton of a shallow, oligotrophic lake in central Brazil (Lagoon Bonita, Distrito Federal) Variação especial e temporal de Peridinium umbonatum F. Stein, 1883 (Dinophyceae) e sua relação com o fitoplâncton total de uma lagoa rasa e oligotrófica no Brasil Central (Lagoa Bonita, Distrito Federal)

Acta Limnologica Brasiliensia, 2010
AIM: The main goal of this study was to investigate the temporal and spatial distribution of Peridinium umbonatum and its relationship with the physical and chemical water variables of the pelagic and littoral zones of Lagoon Bonita, located in Brasília,
Patrícia Pereira Gomes, Maria do Socorro Rodrigues Ibañez, June Springer de Freitas   +2 more
doaj   +1 more source

DISTRIBUCIÓN VERTICAL DE LA DIVERSIDAD BETA DE MACROINVERTEBRADOS EN UN LAGO OLIGOTRÓFICO DE ALTA MONTAÑA NEOTROPICAL

Acta Biológica Colombiana, 2023
Los componentes alfa (α) y beta (β) de la diversidad gamma (γ), y la partición de β en anidamiento y recambio, contribuyen a entender los factores que determinan la diversidad biológica.
Yimy Herrera-Martínez, Mabel Giovana Pimiento-Ortega, Narcís Prat, Nayibe Yanine Castiblanco Rodríguez, Yesica Lorena González Martínez   +4 more
doaj   +1 more source

Lago Chad: qué se esconde tras la crisis de sus aguas

Relaciones Internacionales, 2020
El lago Chad es un oasis en medio del desierto. Se trata de un lago tropical cuya cuenca activa se alimenta principalmente de las aguas del río Chari y de su afluente el río Logone. Cerca de cien millones de habitantes viven de sus aguas.
Silvia Alejandra Perazzo
doaj   +1 more source

Influence of seston quantity and quality on growth of tropical cladocerans Influência da quantidade e qualidade do séston sobre o crescimento de cladóceros tropicais

Brazilian Journal of Biology, 2005
The seston of the small, shallow, and tropical lake Monte Alegre was tested for quantity and quality for cladocerans by growth bioassays, which were carried out in spring (Daphnia gessneri and Moina micrura), summer (D. gessneri, M. micrura, Ceriodaphnia
A. S Ferão-Filho, M. S. Arcifa, C. Fileto   +2 more
doaj   +1 more source

Monitoreo de cianobacterias como estrategia para el aseguramiento de la calidad del agua potable distribuida en el Área Metropolitana de San Salvador, El Salvador

Tecnología y ciencias del agua
El lago de Güija posee una superficie aproximada de 45 km2 y una profundidad máxima de 21 m en época seca; forma parte del complejo lagunar homónimo y su importancia como ecosistema fue reconocida en 2010 tras la obtención de su declaratoria como sitio ...
Luis Ortez, Yaneth Alvarado, Gabriela Montes, Alma Aguilar   +3 more
doaj   +1 more source

Centennial-scale precipitation anomalies in the southern Altiplano (18° S) suggest an extratropical driver for the South American summer monsoon during the late Holocene [PDF]

Climate of the Past, 2019
Modern precipitation anomalies in the Altiplano, South America, are closely linked to the strength of the South American summer monsoon (SASM), which is influenced by large-scale climate features sourced in the tropics such as the Intertropical ...
I. A. Jara, A. Maldonado, A. Maldonado, A. Maldonado, L. González, A. Hernández, A. Sáez, S. Giralt, R. Bao, B. Valero-Garcés, B. Valero-Garcés   +10 more
doaj   +1 more source

Structure and dynamics of phytoplankton in an Amazon lake, Brazil

Revista de Biología Tropical, 2010
Natural lake systems represent important reservoirs for residential water supply, fish production, recreational activities and enjoyment of their natural beauty. Nevertheless, human impacts may affect their health status resulting in degradation and loss
Ise de Goreth Silva, Ariadne do Nascimento Moura, Enio Wocyli Dantas, Maria do Carmo Bittencourt-Oliveira   +3 more
doaj   +2 more sources

Exploring Low‐Concentrating Photovoltaic Systems and Solar Cell Solutions for Nigeria's Renewable Energy Future

Energy Science &Engineering, EarlyView.
This study explores the potential of solar PV and concentrating PV (CPV) technologies as sustainable energy solutions for Nigeria, highlighting their suitability in transitioning away from fossil fuels. By harnessing abundant solar resources, these technologies offer efficient, clean, and locally adaptable alternatives, supporting energy security ...
Sani Mohammed Lawal, Nazila Fough, Firdaus Muhammad‐Sukki, Mohd Khairul Amri Kamarudin, Nazmi Sellami   +4 more
wiley   +1 more source

Quality of Spontaneous and Backslopped Fermented Cassava Flour From Different Cassava Landraces and Sensory Acceptability of the Cooked Dough

Food Chemistry International, EarlyView.
The cooked Oko‐iyawo spontaneously fermented cassava flour's sensory acceptability was correlated with its amylose content, pH, pasting temperature, and water absorption capability. Cassava processors may be able to create consistently high‐quality fermented cassava flour for various end users with the use of the information provided in this study ...
Awoyale Wasiu, Yusuf O. Joshua, Irondi A. Emmanuel, Abdulrahman L. Ololade, Allie Georgiana, Olatoye K. Kazeem, Maziya‐Dixon Busie   +6 more
wiley   +1 more source