Results 31 to 40 of about 63,913 (233)

LUMINESCENT PROPERTIES OF TiO₂ : Sm³+, SYNTHESIZED BY SOL-GEL METHOD

Вестник Северо-Кавказского федерального университета, 2022
This work gives description of method receiving powder titanium oxide doped ions samarium (TiO2:Sm3+) with pure anatase structure. Synthesized sample has strong red-orange luminescent lines under exposition of ultraviolet radiation.
Oleg Chapura, Alexey Skomorokhov, Arthur Osipov, Elena Belayeva, Nikita Remarenko, Yas Osamah Yas   +5 more
doaj  

Development and research of a gas stamping device for making hollow products from a pipe billet

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
It is advisable to produce hollow thin-walled parts widely used in machine designs from tubular blanks. In existing methods cold forming of the tubular billet takes place for the production of hollow products.
A. Yu. Botashev, R. A. Bayramukov, N. U. Bisilov, E. Kh. Dzhumanazarov, R. S. Malsugenov   +4 more
doaj   +1 more source

Application of barrier technologies to prolong the shelf life of sausage products

Современная наука и инновации, 2023
Regularities have been studied and modes of synthesis of a concentrate of aggregation-resistant silver nanoparticles have been optimized. The influence of the conditions of the dispersion medium on the yield of silver nanoparticles in the biologically ...
I. M. Shevchenko, V. I. Shipulin, Al. Vl. Serov, N. D. Lupandina, A. V. Savva   +4 more
doaj   +1 more source

Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens

PLANTS, PEOPLE, PLANET, EarlyView.
Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski, Łukasz Walas, Marzenna Guzicka   +2 more
wiley   +1 more source

A ‘Wholly Unjustifiable Treatment of British Subject’? The Detention of W. T. Goode in the Baltic, 1919

History, EarlyView.
Abstract In the summer of 1919, W. T. Goode, the Manchester Guardian’s special correspondent in Russia and the Baltic, was arrested in the Estonian capital Tallinn and briefly detained aboard a British warship. Goode's detention caused a furore, leading to accusations of kidnap, heated commentary in the press and questions in parliament.
Colin Storer
wiley   +1 more source

Insurance: is it better together?

Вестник Северо-Кавказского федерального университета
Introduction. In order to minimize certain risks of consumer loans, credit institutions impute to the insurance obligation to credit-borrowers. The current tariff policy of commercial insurers is in constant dynamic development due to deterministic ...
E. A. Rusetskaya, D. A. Zakharova, A. A. Krechetova, A. I. Shchetinskaya, Ya. D. Gundar, K. S. Frolov   +5 more
doaj   +1 more source

New data on the fauna of families Dytiscidae, Hydrophilidae and Dryopidae (Coleoptera) of the North Caucasus [PDF]

Кавказский энтомологический бюллетень, 2012
Nine species of water beetles of families Dytiscidae, Hydrophilidae and Dryopidae are recorded for the North Caucasus. Bidessus delicatulus (Schaum, 1844) and Oreodytes davisii (Curtis, 1831) are new for Russia and the North Caucasus, Megasternum ...
M.I. Shapovalov, A.A. Prokin, V.D. L’vov   +2 more
doaj   +1 more source

The use of Renewable Energy Sources in the Agriculture of the Stavropol Province in the Post-Reform Period

Наука. Инновации. Технологии, 2023
Introduction. The article studies the peculiarities of the use of renewable energy sources in the Stavropol province of the post-reform period, mainly in the field of flour milling, which added most to the well-being of both local population and the ...
E. G. Mishvelov, A. I. Belousov, A. L. Ivanov, S. I. Sigida, A. I. Kornienko   +4 more
doaj   +1 more source

First description of the female of the theridiid spider Robertus golovatchi (Araneae: Theridiidae) [PDF]

, 2012
The female of Robertus golovatchi Eskov, 1987 is described for the first time from Abkhazia and the male is also figured. The female is compared to another species known from the Caucasus R.
Kovblyuk, Mykola M., Marusik, Yuri M.
core   +2 more sources

Genetic and phenotypic variation in wood tiger moths from the Caucasus: insights into male warning color variation

Insect Science, EarlyView.
Coloration serves several fitness‐related functions, including thermoregulation, immunity, social signaling, sexual selection, and predator avoidance. Consequently, color polymorphism can have a significant impact on a species’ interactions with its environment, including its relationships with predators, prey, and potential mates. The wood tiger moth (
Juan A. Galarza, Ossi Nokelainen, Melanie N. Brien, Cristina Ottocento, Bibiana Rojas, Janne K. Valkonen, Tamar Chunashvili, Tõnis Tasane, Chris D. Jiggins, Johanna Mappes   +9 more
wiley   +1 more source