Results 1 to 10 of about 15,954 (210)

Features of Uranium Recovery from Complex Aqueous Solutions Using Composite Sorbents Based on Se-Derivatives of Amidoximes [PDF]

open access: yesGels
The article presents a comprehensive comparative performance evaluation and validation of composite adsorbents based on the Se-derivative of 4-amino-N′-hydroxy-1,2,5-oxadiazole-3-carboximidamide for U (VI) recovery from complex multicomponent aqueous ...
Eduard A. Tokar’   +5 more
doaj   +2 more sources

Composite Sorbents Based on Chitosan Polymer Matrix and Derivatives of 4-Amino-N′-hydroxy-1,2,5-oxadiazole-3-carboximidamide for Uranium Removal from Liquid Mineralized Media [PDF]

open access: yesGels
Composite adsorbents based on a natural biopolymer matrix of chitosan, to which 4-amino-N′-hydroxy-1,2,5-oxadiazole-3-carboximidamide and its Se derivative were attached, were synthesized.
Anna I. Matskevich   +7 more
doaj   +2 more sources

Seasonal and interannual variability of fish species composition in catches of bottom nets in the Russian waters of the Kunashir Strait

open access: yesИзвестия ТИНРО, 2023
Seasonal and interannual variability of the demersal fish species composition is considered for the depths of 70–315 m in the eastern Kunashir Strait on the data obtained in 1998–2014.
A. Ya. Velikanov   +4 more
doaj   +1 more source

Features of exploitation of high-number industrial chum salmon Oncorhynchus keta on the example of Lake Tunaicha (south-eastern Sakhalin): problems and proposed solutions

open access: yesИзвестия ТИНРО, 2022
In Lake Tunaicha mainly artificial reproduction of chum salmon is carried out. The escapement is at a high level — more than 1 million fish. Significant pre-settlement mortality of chum salmon has been regularly observed in the lake basin over the last ...
Y. I. Ignatyev   +3 more
doaj   +1 more source

The subjectivity of the personality of learners as a response to the challenges of modern times [PDF]

open access: yesE3S Web of Conferences, 2020
Justification of the objectives of the study: the article discusses issues related to the present, faced by students and future professionals, as well as teachers and psychologists.
Shvetsova Arina   +2 more
doaj   +1 more source

Macrobenthos in the estuary of a typical «salmon» river of Sakhalin Island (on example of the Manuy River)

open access: yesИзвестия ТИНРО, 2022
Species composition, structure, density and biomass of macrobenthos in the estuary of the Manuy River are described, its main communities are defined and their trophic characteristics, production, and distribution along the river channel are determined ...
V. S. Labay   +4 more
doaj   +1 more source

Motivation of students with different professional education levels as a determinant of future professional self-realization [PDF]

open access: yesE3S Web of Conferences, 2020
Justification of the study objectives: Due to the modern demands of the labour market, the reform of the Russian education system requires serious changes, both in the specialists training system and in process of their direct activities.
Afanasenkova Elena   +2 more
doaj   +1 more source

Results of the pacific salmon fishery in the Sakhalin-Kuril region in 2022

open access: yesИзвестия ТИНРО, 2023
Pacific salmon fishery in the Sakhalin-Kuril region in 2022 is analyzed. The data on predicted and actual catch are presented.
A. A. Makoedov   +4 more
doaj   +1 more source

Sakhalin

open access: yesEarthquakes in Northern Eurasia, 2019
A review of the Sakhalin seismicity in 2014 based on the data of regional network is given. The network included four stationary and ten temporary digital seismic stations. This network was supported by ten stations of local network operating in the south of Sakhalin. Parameters of 450 seismic events, including 25 explosions, and focal mechanisms for 4
T. Fokina   +3 more
openaire   +2 more sources

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