Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Narine Vardanyan"'
Autor:
Arevik Vardanyan, Ruiyong Zhang, Anna Khachatryan, Zaruhi Melkonyan, Arshavir Hovhannisyan, Sabine Willscher, Andreas Kamradt, Manuel Jost, Yimeng Zhang, Can Wang, Narine Vardanyan
Publikováno v:
Separations, Vol 11, Iss 4, p 124 (2024)
Bioleaching of Cu from the copper concentrate of Armanis gold-bearing polymetallic ore (Armenia) was investigated. The main objective was revealing high active bacteria and their association, as well as optimizing the bioleaching process with their a
Externí odkaz:
https://doaj.org/article/a756830d76bd41868b003840d3ea926e
Autor:
Anna Khachatryan, Narine Vardanyan, Sabine Willscher, Garegin Sevoyan, Ruiyong Zhang, Arevik Vardanyan
Publikováno v:
Minerals, Vol 14, Iss 1, p 26 (2023)
A new strain of Leptospirillum sp. Ksh-L was isolated from a dump-bioleaching system of the Kashen copper-molybdenum mine (South Caucasus). Ksh-L is an obligate chemolithoautotroph, capable of oxidizing ferrous iron (Fe2+). Cells are Gram-negative an
Externí odkaz:
https://doaj.org/article/32731bb4fcc04eaa92c3617f4617a6dd
Autor:
Arevik Vardanyan, Anna Khachatryan, Laura Castro, Sabine Willscher, Stoyan Gaydardzhiev, Ruiyong Zhang, Narine Vardanyan
Publikováno v:
Minerals, Vol 13, Iss 2, p 243 (2023)
A strain of Leptospirillum sp. CC previously isolated from Akhtala polymetallic ore (Armenia) was studied. The main morphological and physiological characteristics of CC were revealed. The optimal growth temperature was 40 °C and optimal pH 1.5. A p
Externí odkaz:
https://doaj.org/article/ac4cc52a6fb14969aac94fb2cdba012a
Publikováno v:
Metals, Vol 12, Iss 12, p 2092 (2022)
The effect of varying process parameters during bio-catalyzed leaching of metals from end-of-life printed circuit boards (PCBs) was investigated. Fragmented PCBs (under 2 mm) were subjected to an indirect bioleaching in a stirred tank reactor while p
Externí odkaz:
https://doaj.org/article/46d1d32b9b6d446780e450c38f18f0a6
Autor:
Narine Vardanyan, Hamlet Badalyan, Levon Markosyan, Arevik Vardanyan, Ruiyong Zhang, Wolfgang Sand
Publikováno v:
Frontiers in Microbiology, Vol 11 (2020)
A novel strain of an iron- and sulfur-oxidizing bacterium was isolated from a natural biotope at Kashen copper ore (Martakert Province, Republic of Artsakh). The strain is able to grow and oxidize ferrous ions in the range of pH 1.4–2.6 with optima
Externí odkaz:
https://doaj.org/article/df3ce8b70eb6484dbe4430a7ae4c0c07
Publikováno v:
International Archives of Otorhinolaryngology, Vol 24, Iss 04, Pp e407-e412 (2020)
Introduction From April 2009 to December 2016, 661 consecutive patients undergoing sinus surgery completed a quality of life (QOL) questionnaire (SNOT-22) preoperatively and at 3, 6, and 12 months postoperatively. Objective (1) To evaluate the long-t
Externí odkaz:
https://doaj.org/article/7a79280aa2dd41bea1be39353f448acb
Publikováno v:
International Journal of Environmental Studies. :1-16
Autor:
Narine Vardanyan
Publikováno v:
“Katchar” Collection of Scientific Articles International Scientific-Educational Center NAS RA. :125-138
Higher education quality issues continue to be the focus of education experts, researchers, and policymakers in this context. The issue of involvement in the process of education quality assurance is also important, moreover, we are talking about bot
Publikováno v:
Metals, Vol 11, Iss 3, p 425 (2021)
The aim of this study is to investigate the potential of newly isolated strain Leptospirillum (L.) ferriphilum CC for bioleaching of pyrite and chalcopyrite in pure or mixed culture with other iron- and/or sulfur-oxidizing bacteria. In this paper, ki
Externí odkaz:
https://doaj.org/article/8a8312cac102422c8f2cf983a362623b