Results 51 to 60 of about 546 (176)

Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelves

open access: yesLimnology and Oceanography Letters, Volume 10, Issue 5, Page 724-733, September 2025.
Abstract Land permafrost thaw transfers increasing amounts of organic matter and nutrients to the Arctic Ocean. These nutrients could stimulate primary production directly, or indirectly following remineralization in sediments. Projections of this effect are limited by scarce observations and poor understanding of the underlying controls.
Birgit Wild   +10 more
wiley   +1 more source

Conservation and Use of Archaeological Heritage in Ulyanovsk Oblast

open access: yesПоволжская археология, 2017
This article addresses the problems of preservation and use of archaeological sites on the territory of the Ulyanovsk Oblast, where over 700 sites were discovered.
Semykin Yuriy A
doaj   +1 more source

Environmental Gradients, Not Geographic Boundaries, Structure Meiofaunal Communities in Siberian Seas

open access: yesEnvironmental DNA, Volume 7, Issue 3, May–June 2025.
This study uses sediment eDNA metabarcoding to assess the diversity and distribution of meiofauna in Siberian seas, marking the first application of this technique in the region. Our results reveal that meiofauna diversity is similar across the three studied seas; however, both meiofauna diversity and the maturity index of nematode communities are ...
Adele Maciute   +9 more
wiley   +1 more source

Distribution and host plants of some tephritid fies (Diptera: Tephritidae) in European Russia and Armenia [PDF]

open access: yesКавказский энтомологический бюллетень
tFirst records of Tephritidae spp. (Diptera) for selected areas of European Russia are presented: Chaetostomella rossica Hendel, 1927 for Ulyanovsk and Samara regions, Euleia rotundiventris (Fallén, 1814) for Ulyanovsk Region and Mordovia, Urophora ...
D.A. Evstigneev   +2 more
doaj   +1 more source

Flexible Asymmetrically Transparent Conductive Metamaterial Electrode Based on Photonic Nanojet Arrays

open access: yesLaser &Photonics Reviews, Volume 19, Issue 2, January 22, 2025.
A new platform of Flexible Asymmetrically Transparent Conductive Electrode is proposed. The design is based on an array of silica microspheres deposited on a patterned thin aluminum film attached to a flexible polymer matrix. The photonic device exhibits over 80% transmittance, 5‐fold level transmittance asymmetry and a remarkable 2.8 Ω sq−1 sheet ...
D. A. Kislov   +19 more
wiley   +1 more source

Mineral composition and gemological characteristics of the petrified wood of the Ulyanovsk region

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
For the first time, the mineral composition and gemological characteristics of the petrified wood from the Ulyanovsk region, of jewelry and ornamental quality, have been studied.
D. A. Petrochenkov
doaj   +1 more source

Heart failure in Europe: Guideline‐directed medical therapy use and decision making in chronic and acute, pre‐existing and de novo, heart failure with reduced, mildly reduced, and preserved ejection fraction – the ESC EORP Heart Failure III Registry

open access: yesEuropean Journal of Heart Failure, Volume 26, Issue 12, Page 2487-2501, December 2024.
The ESC Heart Failure III Registry enrolled 10 162 patients between 2018 and 2020, with acute heart failure (HF) and in the outpatient setting, with pre‐existing and de novo HF, in cardiology and non‐cardiology settings, including patients with HF with reduced (HFrEF), mildly reduced (HFmrEF) and preserved ejection fraction (HFpEF).
Lars H. Lund   +1226 more
wiley   +1 more source

EVALUATION OF MOTIVATION CONDITIONS FOR REPRODUCTION OF LABOR RESOURCES AND SOCIAL-LABOR RELATIONS IN AGRICULTURE (ON THE EXAMPLE OF THE ULYANOVSK REGION)

open access: yesВестник университета, 2017
The article assesses the motivational conditions for the reproduction of labor resources and social and labor relations in agriculture in the Ulyanovsk region. Reproduction of labor resources is considered.
N. Laptev, N. Ananyeva, M. Rybkina
doaj   +1 more source

Universal system of passive heat removal from the core of a research reactor [PDF]

open access: yesNuclear Technology and Radiation Protection, 2019
This paper presents the results of an analysis of a universal cooling system for the core of re- search reactors built on the passive principle of natural convection.
Uzikov Vitaly, Uzikova Irina
doaj   +1 more source

Agricultural Sector of Ulyanovsk Region (1966-1970): A Focus on Crop Production

open access: yesНаучный диалог
This article provides a comprehensive analysis of the modernization processes in the crop production sector of the Ulyanovsk region during the Eighth Five-Year Plan.
R. A. Mukhamedov, I. V. Ilyichev
doaj   +1 more source

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