Results 11 to 20 of about 66,937 (185)

Research Applications for the Geostationary Lightning Mapper Operational Lightning Flash Data Product. [PDF]

J Geophys Res Atmos, 2019
Abstract The Lightning Cluster Filter Algorithm in the Geostationary Lightning Mapper (GLM) ground system identifies lightning flashes from the stream of event detections. It excels at clustering simple flashes but experiences anomalies with complex flashes that last longer than 3 s or contain more than 100 groups, leading to flashes being artificially
Peterson M.
europepmc   +2 more sources

Породы-коллекторы бассейна Маракайбо - Венесуэла [PDF]

, 2011
Zusammenfassung Bei der Messung dimensioneller Größen mit Röntgen-Computertomografie (CT) kann die Messunsicherheit anhand kalibrierter Werkstücke ermittelt werden.
Damm, Björn Eric, Niggemann, Christian, Schmitt, Robert H.   +2 more
core   +2 more sources

Fertility in Gyr Cows (Bos indicus) with Fixed Time Artificial Insemination and Visual Estrus Detection Using a Classification Table. [PDF]

J Vet Med, 2014
The aim of this research was to compare two artificial insemination protocols (AIP): hormonal synchronization with fixed time artificial insemination (SC‐FTAI) and the use of a table based on visual observation of estrus signs (VO) in order to identify cows in natural or spontaneous estrus being assigned to AI (NSE‐IA).
Ramírez-Iglesia LN, Roman Bravo RM, Díaz de Ramirez A, Torres LJ.   +3 more
europepmc   +2 more sources

Evolutionary History and Taxonomic Reclassification of the Critically Endangered Daggernose Shark, a Species Endemic to the Western Atlantic

Journal of Zoological Systematics and Evolutionary Research, Volume 2023, Issue 1, 2023., 2023
The family Carcharhinidae includes the most typical and recognizable sharks, although its internal classification is the subject of extensive debate. In particular, the type genus, Carcharhinus Blainville, 1816, which is also the most speciose, appears to be paraphyletic in relation to a number of morphologically distinct taxa. Isogomphodon oxyrhynchus
Luis Fernando da Silva Rodrigues-Filho, Paula da Costa Nogueira, Davidson Sodré, José Rafael da Silva Leal, Jorge Luiz Silva Nunes, Getulio Rincon, Rosangela Paula Teixeira Lessa, Iracilda Sampaio, Marcelo Vallinoto, Jonathan S. Ready, João Bráullio Luna Sales, Savel Daniels   +11 more
wiley   +1 more source

Variability in fluvially‐dominated, fine‐grained, shallow‐water deltas

Sedimentology, Volume 69, Issue 7, Page 2779-2813, December 2022., 2022
Abstract Fluvially‐dominated, fine‐grained, shallow‐water deltas are more variable than is generally recognized. Studies of the Mississippi River imply rather persistent river‐mouth jet dynamics, resulting in either progressive channel bifurcation around middle‐ground mouth bars on lobate deltas, or steady channel progradation to form elongate deltas ...
Antony David Reynolds, Jeff Peakall
wiley   +1 more source

Use of wireless sensor network system based on water level, rain, conductivity, oil and turbidity sensors to monitor the storm sewerage

IET Wireless Sensor Systems, Volume 12, Issue 3-4, Page 103-121, June-August 2022., 2022
Abstract Storm sewerages are crucial infrastructures in water management. In this paper, a system was developed to detect the blockage of the sewerage and the presence of illegal spills in Storm sewerages. Different nodes with sensors measuring the water level, turbidity, conductivity, and oil presence are scattered in the sewerage.
Javier Rocher, Albert Rego, Jaime Lloret, Luís M. L. Oliveira   +3 more
wiley   +1 more source

The onset of grasses in the Amazon drainage basin, evidence from the fossil record [PDF]

, 2020
Poaceae (the grass family) originated in the Cretaceous, but first dominate the palynological records of the Amazon drainage basin (ADB) in the Neogene (23 to 2.5 million years ago (Ma)).
Hoorn, Carina, Kirschner, Judith A.
core   +3 more sources

Biogeography of curimatid fishes reveals multiple lowland–upland river transitions and differential diversification in the Neotropics (Teleostei, Curimatidae)

Ecology and Evolution, Volume 11, Issue 22, Page 15815-15832, November 2021., 2021
The time‐calibrated molecular phylogeny and geographic range evolution of the Neotropical family Curimatidae show a Late Cretaceous origin in lowland basins of South America with subsequent colonization to upland basins at multiple times during the Cenozoic.
Bruno F. Melo, James S. Albert, Fernando C. P. Dagosta, Victor A. Tagliacollo   +3 more
wiley   +1 more source

Origin and Biodegradation of Crude Oils from the Northernmost Fields in the Bolivar Coastal Complex (Zulia State, Venezuela)

Energies, 2020
The organic geochemical features of 30 sampled oils from the northern Bolivar Coastal Complex (Lake Maracaibo Basin, NW Venezuela) were examined by combining carbon isotope, classical biomarker, and extended diamondoid analyses to clarify source facies ...
Marcos Escobar, Gonzalo Márquez, Blanca Guerrero, Patricia Marín, Carlos Boente, Antonio Bernardo-Sánchez, Emilio Romero, Albert Permanyer   +7 more
doaj   +1 more source

A Global LIS/OTD Climatology of Lightning Flash Extent Density

Journal of Geophysical Research: Atmospheres, Volume 126, Issue 8, 27 April 2021., 2021
Abstract Previous lightning climatologies derived from Lightning Imaging Sensor (LIS) and Optical Transient Detector (OTD) total lightning measurements have quantified lightning frequency as a Flash Rate Density (FRD). This approach assumes that lightning flashes can be represented as points and quantifies the frequency of lightning centered in each ...
Michael Peterson, Douglas Mach, Dennis Buechler   +2 more
wiley   +1 more source