Results 201 to 210 of about 3,286,440 (286)

Analysis of the effect of COVID‐19 on crude oil and agricultural commodity market relationships

open access: yesJournal of the Agricultural and Applied Economics Association, EarlyView.
Abstract This study examines the COVID‐19 pandemic's effect on relationships between crude oil and agricultural commodity markets. Using a Time‐Varying Parameter Vector Autoregressive model, we find strong volatility transmission, with Brent, WTI, corn, and soybean prices acting as net shock transmitters, while cotton and wheat are net receivers ...
Derick Adu   +2 more
wiley   +1 more source

Identifiable regional and neural network abnormalities in early childhood anxiety

open access: yesJCPP Advances, EarlyView.
Abstract Background Although the neural underpinnings of anxiety have been investigated, most research has been confined to adolescence and adulthood, with less of a focus on the early childhood period. Little is known about the role of anticipatory fear processing early childhood, which is a sensitive period for anxiety development.
Khalil I. Thompson   +7 more
wiley   +1 more source

Amyloid‐β–Related Cortical Susceptibility Alterations in Individuals Under Assessment for Alzheimer's Disease: A χ‐Separation Study

open access: yesJournal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Assessment of amyloid‐β (Aβ) burden and associated iron deposition and neurodegeneration is important for Alzheimer's disease (AD) management. Although quantitative susceptibility mapping (QSM) detects iron and myelin changes, conventional metrics suffer from signal cancelation between paramagnetic and diamagnetic components ...
Hiroyuki Tatekawa   +14 more
wiley   +1 more source

Late Quaternary lake filling and drying in northern Australia's largest freshwater lake

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Lake Woods, Jurrkulu, is northern Australia's largest freshwater lake filled today in strong Indo–Australian summer monsoons (IASM) to maximum depths of ~5 m. On the western margins of the lake, two large arcuate ridges occur 20 to 40 m above the lake floor and inset within these are other mid‐elevation lake deposits, such as depositional ...
Tim J. Cohen   +14 more
wiley   +1 more source

Forest or tundra? How different vegetation reconstructions of Last Glacial landscapes in Europe may shape our perception of early human dispersal processes

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Regional variability and long‐term changes of past ecosystems likely had a strong impact on hunter–gatherer population dynamics, including the expansion of anatomically modern humans and the disappearance of Neanderthals. However, our understanding of these ecosystems remains limited, even when looking at large‐scale patterns, such as the ...
Oliver A. Kern   +5 more
wiley   +1 more source

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