Results 81 to 90 of about 14,688 (227)

Chiral thioacetyl derivatives of proline as novel potential agents for beluga reproduction

open access: yesAquaculture and Fisheries
The aim of the research was to study antioxidant activity and protective potential of new phenol-containing thioacetyl derivatives of D- and L-prolines as potential agents on beluga sperm and survival in the early stages of ontogeny of bester (Huso x ...
Victoria P. Osipova   +7 more
doaj   +1 more source

Shipping Through Sea Ice: Impacts on Marine Habitats and Best Practices [PDF]

open access: yes, 2017
As the result of Arctic climate change and an increase in shipping season length, there is a growing interest in Arctic shipping operations. Sea ice serves as an important habitat for marine mammals, therefore, shipping through sea ice could lead to ...

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A novel system for micron‐scale analysis of energy deposition and response to low‐dose radiation

open access: yesMedical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Micrometer‐scale evaluation of energy deposition is important for radiation protection and therapy as well as for advancing knowledge of responses to radiation in materials and biological systems. Due to the stochastic nature of radiation interactions, there is significant variation in energy deposition in micrometer‐sized targets ...
Prarthana Pasricha   +11 more
wiley   +1 more source

Localization and tracking of beluga whales in aerial video using deep learning

open access: yesFrontiers in Marine Science
Aerial images are increasingly adopted and widely used in various research areas. In marine mammal studies, these imagery surveys serve multiple purposes: determining population size, mapping migration routes, and gaining behavioral insights.
Mostapha Alsaidi   +6 more
doaj   +1 more source

Alaska Fuel Price Projections 2008 - 2030 [PDF]

open access: yes, 2008
We generated Low, Medium, and High case fuel price projections for the years 2008-2030 for the following fuels: • Incremental natural gas in Southcentral Alaska delivered to a utility-scale customer • Incremental diesel delivered to a PCE community ...
Colt, Steve   +2 more
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Explicit Substitutions for Contextual Type Theory [PDF]

open access: yes, 2010
In this paper, we present an explicit substitution calculus which distinguishes between ordinary bound variables and meta-variables. Its typing discipline is derived from contextual modal type theory.
Adam Poswolsky   +21 more
core   +6 more sources

Results on photo identification for beluga whale Delphinapterus leucas in the Anadyr estuary of the Bering Sea

open access: yesИзвестия ТИНРО, 2014
Definition of individual beluga whales by the method of photo identification and selection of the main types of markers are presented for beluga whales in the Anadyr estuary, western Bering Sea. The study was conducted in the aggregation of beluga whales
Ekaterina A. Prasolova   +3 more
doaj   +1 more source

An Independent Review of USGS Circular 1370: An Evaluation of the Science Needs to Inform Decisions on Outer Continental Shelf Energy Development in the Chukchi and Beaufort Seas, Alaska [PDF]

open access: yes, 2011
Reviews the U.S. Geological Survey's findings and recommendations on Alaska's Arctic Ocean, including geology, ecology and subsistence, effect of climate change on, and impact of oil spills.
Alan Springer   +13 more
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The effects of dietary Agaricus bisporus powder on growth performance, haematological indices, and serum immune response in beluga (Huso huso) juvenile

open access: yesFrontiers in Marine Science
IntroductionThe present study investigates the effects of mushroom powder (MP) on growth parameters, haematological indices, innate immune response, and serum biochemical indices in beluga (Huso huso) juveniles.MethodsA total of 120 fish (45 ± 0.5 g ...
Afshin Aminzadeh   +2 more
doaj   +1 more source

Beluga, Delphinapterus leucas, Habitat Associations in Cook Inlet, Alaska [PDF]

open access: yes, 2000
A review of available information describing habitat associations for belugas, Delphinapterus leucas, in Cook Inlet was undertaken to complement population assessment surveys from 1993-2000.
Litzky, Laura K.   +4 more
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