Results 41 to 50 of about 22,415 (310)

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Cobalt-based multicomponent embedded in biomass-derived porous biochar as a highly efficient oxygen reduction reaction electrocatalyst

Biochar
The oxygen reduction reaction (ORR) is pivotal for energy conversion systems such as metal-air batteries and fuel cells, yet the development of cost-effective and efficient catalysts remains a challenge.
Yu Cheng, Jue Ding, Hongzhe Pan, Yiping Li, Ningyuan Zhu, Linlin Ma, Han Sun, Jun Wu   +7 more
doaj   +1 more source

Water quality's responses to water energy variability of the Yangtze River

Water Science and Technology
River energy serves as an indicator of pollutant-carrying capacity (PCC), influencing regional water quality dynamics. In this study, MIKE21 hydrodynamics-water quality models were developed for two scenarios, and grid-by-grid numerical integration of ...
XueQi Tian, Hua Wang, Dongfang Liang, Yichuan Zeng, Yuhan Shen, Yuting Yan, Siqiong Li   +6 more
doaj   +1 more source

Effects of Different Water Seasons on the Residual Characteristics and Ecological Risk of Polycyclic Aromatic Hydrocarbons in Sediments from Changdang Lake, China

Journal of Chemistry, 2016
The sediments’ samples were collected from Changdang Lake for the concentration of fourteen polycyclic aromatic hydrocarbons in March (dry season), June (wet season), and September (temperate season) 2013.
Javid Hussain, Zhenhua Zhao, Yong Pang, Liling Xia, Ittehad Hussain, Xin Jiang   +5 more
doaj   +1 more source

Effects of muddy water irrigation with different sediment gradations on nitrogen transformation in agricultural soil of Yellow River Basin

Water Science and Engineering, 2022
Muddy water irrigation has been widely practiced in the Yellow River Basin for agricultural production and is an important method of economical and intensive utilization of water resources.
Li-na Chen, Zi-long Zhao, Guo-mian Guo, Jiang Li, Wen-bo Wu, Fang-xiu Zhang, Xiang Zhang   +6 more
doaj   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

Zooplankton biomass in an eutrophic shallow lake (Buenos Aires, Argentina): spatio-temporal variations [PDF]

, 2009
Zooplankton biomass was investigated monthly from September 1997 to August 1998 in a shallow eutrophic lake (San Miguel del Monte, Argentina). Duplicate samples of zooplankton were obtained from three stations with different limnological characteristics.
M. C. Claps, N. A. Gabellone, H. H. Benítez   +2 more
core   +3 more sources

Surface water extent dynamics from three periods of continuous Landsat time series; subregional differences across Argentine plains

Revista de Teledetección, 2021
The Pampean region in Argentina is an extensive plain characterized by abundant shallow lakes that fulfill many environmental, ecological, and social functions.
Vanina S. Aliaga, María C. Piccolo, Gerardo M. E. Perillo   +2 more
doaj   +1 more source

Planktonic Respiration in a Shallow Eutrophic Lake

Journal of Freshwater Ecology, 2006
ABSTRACT We studied the relationships between planktonic respiration and key physicochemical parameters and total autochthonous biomass for three years in Lake Pamvotis, a shallow and eutrophic Greek lake. Planktonic community respiration was correlated with only one environmental parameter, dissolved inorganic nitrogen concentration, which appeared to
Kagalou, I., Leonardos, I.
openaire   +2 more sources

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source