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Wyszukujesz frazę "Vlasenko, Alexander" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Soil and Eco-Economic Substantiation of the Need for Switching to the Adaptive-Landscape Systems of Agriculture in the Krasnodar Krai
Autorzy:
Barsukova, Galina Nikolayevna
Bershitskiy, Yuriy Iosifovich
Vlasenko, Valery Petrovich
Bagmut, Alexey Alexandrovich
Rysmyatov, Alexander Zakirovich
Powiązania:
https://bibliotekanauki.pl/articles/123398.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
farming system
soil erosion
humus
fertility
terrain
cropping pattern
crop rotation
eco-economic efficiency
Opis:
The climatic, soil, ecological and economic features of the natural landscapes in the Krasnodar Krai were analyzed. The land structure of cultivated land in Western Ciscaucasia was given; the current state of soils in the Krasnodar Krai was analyzed. The changes in the content of humus in the arable layer over the century were considered. The qualitative state of agricultural lands, such as the susceptibility to erosion, the content of humus, and indicators of the nutrients balance in the soil was shown. A conclusion the existing zonal agriculture systems do not use the landscape diversity of the region was drawn. The need for switching to the adaptive landscape system of agriculture was substantiated. Using the GIS technologies, the boundaries of the natural landscapes in the Krasnodar Krai and the areas of agricultural land was determined by types and the degree of the manifestation of erosion processes. An eco-economic assessment of the field crop rotations adapted to the natural landscape by cultivated lands was made.
Źródło:
Journal of Ecological Engineering; 2020, 21, 4; 94-102
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Current-voltage characteristic and electroluminescence of UV LEDs 365 nm at liquid nitrogen temperature
Autorzy:
Veleschuk, Vitaly
Vlasenko, Alexander
Vlasenko, Zoya
Petrenko, Ihor
Malyi, Yevhen
Borshch, Vladimir
Borshch, Olena
Shefer, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/174330.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
S-shaped current-voltage characteristic
UV LED
Opis:
For InGaN/AlGaN/GaN ultraviolet (λ = 365 nm) light emitting diodes, the S-shaped current-voltage characteristic was observed at liquid nitrogen temperature due to the transition from single injection (electrons) to double (electrons and holes) injection. Initially only electron injection into the active region takes place and as the current is increased, the injection of holes starts. It has been found that at the voltage of the minimum of the negative differential resistance region, oscillations of the current, accompanied by increasing electroluminescence intensity arise, and the repetition rate of the oscillations increases with the direct current rise. The intensity of the main ultraviolet and yellow electroluminescence bands sharply increases with increasing current at negative differential resistance region due to the rise of holes injection.
Źródło:
Optica Applicata; 2019, 49, 1; 125-133
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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