Results 11 to 20 of about 44,165 (198)

Protonated decafluorobenzophenone and the decafluorobenzophenone-arsenic pentafluoride adduct. [PDF]

Acta Crystallogr C Struct Chem
Protonated decafluorobenzophenone (perfluorobenzophenone) and its corresponding AsF5 adduct were synthesized by reaction of the ketone with AsF5 using anhydrous HF and liquid SO2, respectively, as solvents, and their crystal structures were determined.The reaction of decafluorobenzophenone [perfluorobenzophenone, (C6F5)2CO] with AsF5 in anhydrous HF ...
Uran E, Lozinšek M.
europepmc   +2 more sources

Unsupervised Region Attention Network for Person Re-Identification

IEEE Access, 2019
As supervised person re-identification (Re-Id) requires massive labeled pedestrian data and it is very difficult to collect sufficient labeled data in reality, unsupervised Re-Id approaches attract much more attention than the former.
Chenrui Zhang, Yangxu Wu, Tao Lei
doaj   +1 more source

Evaluation of variability of the content of alpha and beta acids in Czech bittering hop varieties (Humulus lupulus L.)

Kvasný průmysl, 2023
Czech bitter varieties were evaluated between 2010 and 2022. Hop varieties displayed an average content of alpha acids between 10.24% w/w (Agnus) and 13.73% w/w (Gaia).
Vladimír Nesvadba, Lenka Straková, Gabriela Fritschová, Jana Olšovská, Jitka Charvátová, Sabina Trnková   +5 more
doaj   +1 more source

Produtividade da cana-de-açúcar relacionada à localização de adubos nitrogenados aplicados sobre os resíduos culturais em canavial sem queima Sugar cane yield as related to the location of nitrogen fertilizer applied on top of unburnt sugar cane residues

Revista Brasileira de Ciência do Solo, 2007
O conhecimento agronômico a respeito do manejo adequado de canaviais sem queima da palha, ainda é limitado, principalmente, no que se refere à adubação nitrogenada.
André Cesar Vitti, Paulo Cesar Ocheuze Trivelin, Glauber José de Castro Gava, Henrique Coutinho Junqueira Franco, Isabela Rodrigues Bologna, Carlos Eduardo Faroni   +5 more
doaj   +1 more source

DISTRIBUTION OF THE OCCURRENCE OF THE INTENSIVE IONOSPHERE SCINTILLATIONS ON THE OBSERVATIONS OF THE COSMIC RADIO SOURCES AT THE DECAMETER WAVE RANGE

Odessa Astronomical Publications, 2020
Effect of scintillations arises in the result of interaction of radio signal from the cosmic radio source with irregularities of ionosphere plasma which appears at the registration of observations as amplitude fluctuations.
O. A. Lytvynenko, S. K. Panishko
doaj   +1 more source

STRUCTURE OF VARIABILITY INDEXES OF COSMIC WEATHER AS APPLIED TO DATA MONITORING OF FLUXES OF RADIO SOURCES AT THE “URAN-4” RADIO TELESCOPE

Radio Physics and Radio Astronomy, 2017
Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the state of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources.
L. I. Sobitniak, M. I. Ryabov, A. L. Sukharev, S. K. Panishko   +3 more
doaj   +1 more source

A review on Type-I, Type-II, Z and S-scheme mechanisms involved in photocatalysis of inorganic and organic pollutant

Next Materials
This review evaluates the evolution from Type-I/II to advanced Z-scheme and S-scheme architectures for the remediation of toxic Cr(VI) and industrial dyes.
Ajay Lathe, Anil Mahadeo palve
doaj   +1 more source

Digital receivers for low-frequency radio telescopes UTR-2, URAN, GURT

, 2016
This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations. This paper describes digital radio astronomical receivers used for decameter and meter wavelength observations.
Bortsov, V., Brazhenko, A., Bubnov, I., Bulakh, E., Coffre, A., Denis, L., Dorovskyy, V., Fischer, G., Grießmeier, J. -M., Ivantyshin, O., Kalinichenko, N., Koliadin, V., Konovalenko, A., Koshovyy, V., Koval, A., Kozhin, R., Kravtsov, A., Kravtsov, I., Kuzin, A., Kvasov, G., Lecacheux, A., Lisachenko, V., Litvinenko, G., Lozinsky, A., Melnik, V., Mukha, D., Mylostna, K., Panchenko, M., Plakhov, M., Pylaev, O., Reznichenko, A., Rucker, H. O., Ryabov, V., Shepelev, V., Shevchuk, N., Shevtsova, A., Sidorchuk, M., Skoryk, A., Stanislavsky, A., Stepkin, S., Ulyanov, O., Vashchishin, R., Vasilenko, N., Vasilyev, A., Vasylieva, I., Vasylkivskyi, Y., Vavriv, D., Vinogradov, V., Volvach, Y., Yerin, S., Zakharenko, V., Zarka, P.   +51 more
core   +2 more sources

New Czech Hop Cultivars Art and Uran: A Step Toward Drought-Resistant Hops with High Brewing Potential

Kvasný průmysl
Two new Czech hop cultivars, Art and Uran, were developed within the national hop breeding program of the Czech Republic to improve drought tolerance while maintaining high brewing quality. The cultivars were evaluated for agronomic performance, chemical
Vladimír Nesvadba, Jana Olšovská, Jitka Charvátová, Sabina Trnková, Pavel Donner   +4 more
doaj   +1 more source

RADIO TELESCOPE URAN-4 AND THE PROBLEM OF RADIO INTERFERENCE

Odessa Astronomical Publications, 2018
The URAN-4 decameter radio telescope, which is located in thevillageofMayakiof theOdessaregion, is an element of system of the URAN radio telescopes (Ukrainian Radiointerferometer of theAcademyofSciences).
V. V. Galanin, O. A. Lytvynenko, V. G. Derevyagin, R. O. Kravetz   +3 more
doaj   +1 more source