Results 21 to 30 of about 586,867 (241)

The influence of low-frequency electromagnetic field on the operability of gray seals

open access: yesVestnik MGTU, 2019
Gray seals are widely used in biotechnical systems for various purposes. In the study of the effect of an artificial electromagnetic field (EMF) with 8 Hz frequency on the performance of gray seals, the method of conditioned reflexes has been used (one ...
A. A. Yakovlev   +3 more
doaj   +1 more source

Drones reveal spatial patterning of sympatric Alaskan pinniped species and drivers of their local distributions

open access: yesDrone Systems and Applications, 2022
The Arctic and its adjacent ecosystems are undergoing rapid ecological reorganization in response to the effects of global climate change, and sentinel species provide critical updates as these changes unfold. This study leverages emerging remote sensing
Gregory D. Larsen   +7 more
doaj   +1 more source

Loss of species and genetic diversity during colonization: Insights from acanthocephalan parasites in northern European seals

open access: yesEcology and Evolution, 2023
Studies on host–parasite systems that have experienced distributional shifts, range fragmentation, and population declines in the past can provide information regarding how parasite community richness and genetic diversity will change as a result of ...
Ludmila Sromek   +13 more
doaj   +1 more source

Spatial variation in maximum dive depth in gray seals in relation to foraging. [PDF]

open access: yes, 2014
Theoni Photopoulou was funded by SMRU Ltd in the form of a Ph.D. studentship, 2008–2012.Habitat preference maps are a way of representing animals’ space use in two dimensions.
Matthiopoulos, Jason   +4 more
core   +1 more source

Determinants of the VAT gap - part 2

open access: yesZeszyty Naukowe Wyższej Szkoły Finansów i Prawa w Bielsku-Białej, 2022
The purpose of the paper is to identify the determinants of the gap in Value Added Tax and to assess the measures already taken in order to seal this gap.
Beata Hoza
doaj   +1 more source

Oil seal surface defect detection using superpixel segmentation and circumferential difference

open access: yesInternational Journal of Advanced Robotic Systems, 2020
Surface defects affect the quality and safety of oil seals. It is a challenge to detect such defects in a vision system because of the unequal reflection property of oil seal surfaces and low contrast between the defect and the background.
Zhendong He   +5 more
doaj   +1 more source

Phocid seal leptin: tertiary structure and hydrophobic receptor binding site preservation during distinct leptin gene evolution [PDF]

open access: yes, 2012
The cytokine hormone leptin is a key signalling molecule in many pathways that control physiological functions. Although leptin demonstrates structural conservation in mammals, there is evidence of positive selection in primates, lagomorphs and ...
John A. Hammond (170370)   +17 more
core   +2 more sources

Prevalence of influenza A virus in live-captured North Atlantic gray seals: a possible wild reservoir

open access: yesEmerging Microbes and Infections, 2016
Influenza A virus (IAV) has been associated with multiple unusual mortality events (UMEs) in North Atlantic pinnipeds, frequently attributed to spillover of virus from wild-bird reservoirs.
Wendy Blay Puryear   +16 more
doaj   +1 more source

Clay seals-pintaderas from Sarvantepe settlement

open access: yesПоволжская археология, 2023
The settlement of Sarvantepe, belonging to the Late Bronze – Early Iron period (the second half of the II – the beginning of the I millennium BC), is located on the territory of the village of Chaily of the Gazakh district in the western part of the ...
Najafov Shamil N.
doaj   +1 more source

Life cycle bioenergetics of the gray seal (Halichoerus grypus) in the Baltic Sea: Population response to environmental stress

open access: yesEnvironment International, 2020
Wildlife population dynamics are shaped by multiple natural and anthropogenic factors, including predation, competition, stressful life history events, and external environmental stressors such as diseases and pollution. Marine mammals such as gray seals
Willian T.A.F. Silva   +7 more
doaj   +1 more source

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