Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Dmitrijs Jakovlevs"'
Autor:
Vitalijs Radenkovs, Anda Valdovska, Daiga Galina, Stefan Cairns, Dmitrijs Jakovlevs, Sergejs Gaidukovs, Ingmars Cinkmanis, Karina Juhnevica-Radenkova
Publikováno v:
Nanomaterials, Vol 13, Iss 22, p 2969 (2023)
Considering the documented health benefits of bacterial exopolysaccharides (EPSs), specifically of bacterial levan (BL), including its intrinsic antimicrobial activity against certain pathogenic species, the current study concentrated on the developm
Externí odkaz:
https://doaj.org/article/433a1caa29514afd9e496a2a4e1eb561
Autor:
Vjaceslavs Kocetkovs, Vitalijs Radenkovs, Karina Juhnevica-Radenkova, Dmitrijs Jakovlevs, Sandra Muizniece-Brasava
Publikováno v:
Applied Sciences, Vol 12, Iss 22, p 11539 (2022)
The study aimed to compare the physical-chemical attributes of table eggs from three laying hen breeds housed in the cage and cage-free conditions and to characterize the morphological characteristics of the eggshell interior. A morphological and ele
Externí odkaz:
https://doaj.org/article/fbdefb34440e424e9214c83934757ea9
Autor:
Vitalijs Radenkovs, Karina Juhnevica-Radenkova, Dmitrijs Jakovlevs, Peteris Zikmanis, Daiga Galina, Anda Valdovska
Publikováno v:
Nanomaterials, Vol 12, Iss 17, p 3053 (2022)
The present work was undertaken to elucidate the potential contribution of biosynthetically produced ferulic acid (FA) via enzymatic hydrolysis (EH) of rye bran (RB) to the formation of silver nanoparticles (AgNPs) during green synthesis. An analytic
Externí odkaz:
https://doaj.org/article/6f8762a413c0453ea65d7858f06a1f9e
Autor:
I. Kuusik, Tanel Käämbre, Andris Šutka, Santa Lagzdina, Rainer Pärna, Vambola Kisand, Janis Kleperis, Mikhail Maiorov, Dmitrijs Jakovlevs, Arvo Kikas
Publikováno v:
Materials Chemistry and Physics. :473-479
Magnetite nanoparticles were precipitated from a pure aqueous ferrous salt solution in an air atmosphere. The influence of the solution molarity, the rate of precipitator agent addition, stirring time and annealing temperature was studied. The morpho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::072c68d1340b1e6982f29b828f884f0e
https://doi.org/10.1016/j.matchemphys.2014.10.048
https://doi.org/10.1016/j.matchemphys.2014.10.048
Publikováno v:
Ceramics International. 40:11437-11440
Precipitation can be applied to synthesize magnetite Fe3O4 nanoflakes in an ambient air atmosphere without using any surfactant, templates or special equipment. Magnetite nanoflakes were precipitated from only Fe2+ chloride solution without adding Fe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e52bc8d2f0b9b837b3559f23e44c37a6
https://doi.org/10.1016/j.ceramint.2014.03.140
https://doi.org/10.1016/j.ceramint.2014.03.140
Autor:
Marina Sokolova, Dmitrijs Jakovlevs, Kristine Salma-Ancane, Liga Stipniece, Natalija Borodajenko, Liga Berzina-Cimdina
Publikováno v:
Ceramics International. 40:3261-3267
Mg-substituted hydroxyapatite made up of needle-like and plate-like particles containing different amounts of Mg (between 0.21 wt% and 2.11 wt%) were prepared via wet chemical precipitation method of a homogenous suspension of Mg(OH) 2 /Ca(OH) 2 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::194d2308596d1897ac234f10aa490c37
https://doi.org/10.1016/j.ceramint.2013.09.110
https://doi.org/10.1016/j.ceramint.2013.09.110
Publikováno v:
Ceramics International. 39:8499-8502
The influence of sol–gel auto combustion synthesis conditions on the phase purity and microstructure of ZnFe 2 O 4 (ZnO·Fe 2 O 3 ) nanopowders was studied. The phase composition was determined by X-ray diffraction and the particle size measured by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58749075f7612b48b24f44b8ad4bb999
https://doi.org/10.1016/j.ceramint.2013.02.092
https://doi.org/10.1016/j.ceramint.2013.02.092
Publikováno v:
Sensors and Actuators B: Chemical. 176:330-334
The results presented in this paper were focused on the easy development of cheap, sensitive and integrable spinel zinc ferrite (ZnFe2O4) thin film gas sensors for the detection of ethanol. ZnFe2O4 layers of about 450 nm thick were deposited by spray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cea7891f82cd772b902261af4420d7b6
https://doi.org/10.1016/j.snb.2012.09.061
https://doi.org/10.1016/j.snb.2012.09.061
Autor:
Andris Šutka, Gundars Mezinskis, G. Strikis, Jānis Kleperis, A. Lusis, Juris Zavickis, Dmitrijs Jakovlevs
Publikováno v:
Thin Solid Films. 526:65-69
Nanocrystalline, homogeneous spinel Ni 1 − x Zn x Fe 2 O 4 thin films were deposited on glass substrates by using spray pyrolysis of metal nitrate aqueous solutions. The thickness of deposited films was below 500 nm, but crystallite size was under
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03f281eaf0a3bf940881fbb11e311fa3
https://doi.org/10.1016/j.tsf.2012.11.017
https://doi.org/10.1016/j.tsf.2012.11.017
Autor:
Liga Berzina-Cimdina, Liga Stipniece, Dmitrijs Jakovlevs, Kristine Salma-Ancane, Natalija Borodajenko
Publikováno v:
Key Engineering Materials. 527:26-31
The objective of this work is to synthesize pure and Mg-substituted hydroxyapatite (HAp) powders with different MgO content in synthesis media (in the wide range of 0.1-10.0 wt% in respect to Ca), and to study the influence of Mg2+ ions substitution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ceb88a3be28e5c84e9413ca4cef3828
https://doi.org/10.4028/www.scientific.net/kem.527.26
https://doi.org/10.4028/www.scientific.net/kem.527.26