• THESES

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▪   A.K. Vardanyan, N.S. Vardanyan, A.S. Khachatryan, Z.M. Melkonyan, Bioleaching of pyrite by mixed cultures of iron and/or sulphur oxidizing bacteria isolated in Armenia, Metallurgical & Materials Engineering Congress of South-East Europe (MME-SEE 15) June 5-7 2019, Belgrade, Serbia.

▪   N.S. Vardanyan, G.G. Sevoyan, A.K. Vardanyan, Bioleaching of tailings resulting from benefication of polymetallic ores for recovery of valuable metals // Proceedings of the 22th International Biohydrometallurgy Symposium, September 23-27, 2017, Freiberg, Germany, Vol. 262. p. 113-117.

▪   A. Khachatryan, N.Vardanyan, Z.Melqonyan, A. Vardanyan, Study of resistance of isolated Leptospirillum ferriphilum CC and Acidithiobacillus sp. 13Zn to copper and zinc //4 International Scientific Conference of Young Researchers, Biotechnology: Science and Practice, September 28-30, 2017, Yerevan, Armenia, p. 20.

▪   N. Vardanyan, G. Sevoyan, A. Vardanyan, Z. Melqonyan, A. Khachatryan, The prevalence and biodiversity of microorganisms relevant to AMD generation in metallurgical wastes and tailings // 4 International Scientific Conference of Young Researchers, Biotechnology: Science and Practice, September 28-30, 2017, Yerevan, Armenia, p. 7.

▪   A.K. Vardanyan, N.S. Vardanyan, A.S. Khachatryan, Z.S. Melkonyan, Chemical oxidation integrated into bioleaching of pyrite and chalcopyrite using immobilized biomass // The 3rd International Conference on Chemical Engineering - ICCE 2016, November 9-11, 2016, Iaşi, România.

▪   Vardanyan N.S., Vardanyan A.K., Khachatryan A.S., Oxidation of pyrite and chalcopyrite by pure and mixed cultures of new iron- and sulfur-oxidizing bacteria // Autotrophic microorganisms:5th All-Russion International Symposium, 21-24 December 24, Moscow, 2015, p.87.

▪   Arevik Vardanyan, Narine Vardanyan, Levon Markosyan, Wolfgang Sand, Mario Vera, Ruiyong Zhang Biofilm formation and extracellular polymeric substances (EPS) analysis by new isolates of Leptospirillum, Acidithiobacillus and Sulfobacillus from Armenia // International Biohydrometallurgy Symposium 2015 (IBS 2015), October 5-9, 2015, Bali, Indonesia, Biotechnologies in Mining Industry and Environmental Engineering (Advanced Materials Research) Vol. 1130, p. 153-156.

▪   Vardanyan A., Vardanyan N. Bioleaching of pyrite by pure and mixed culture of chemolithothrophic bacteria // IX Meeting of the Mineralogical Society of Poland “Contemporary Challenges in the Mineralogical Sciences” held in Sandomierz, Poland, 8-11 October, 2015.

▪   Vardanyan A.K., Vardanyan N.S., Markosyan L.S., Immobilization of chemolithotrophic bacteria for enhancing efficiency of bioleaching // Proceedings of the International Youth Conference “Science and Innovation 2015”, September 25-27, Tsaghkadzor, Armenia, p. 251-257.

▪   Vardanyan A.K., Vardanyan N.S., Markosyan L.S. Extracellular polimeric substances  (EPS) and biofilm formation by iron oxidizing bacteria // 3rd International Scientific Conference on ''Dialogues on Sciences'', June 23-26, 2015, Yerevan, Armenia, Books of abstracts, p. 31.

▪   Vardanyan A.K., Vardanyan N.S. Isolation and identification of metal bioleaching iron oxidizing bacteria // 3rd International Scientific Conference on ''Dialogues on Sciences'', June 23-26, 2015, Yerevan, Armenia, Books of abstracts, p. 30.

▪   Vardanyan A.K. Attachment and biofilm formation of Leptospirillum sp. strain ZC on pyrite coupons // “Innovation Approaches In Science” International conference, Tsaghkadzor (Armenia), 5-7 December, 2014, p. 3-5, 11-12.

▪   Vardanyan A.K. Study of apple scab and revealing protection methods for production of healthy apple // Book of abstracts of International summer school for young scientists “Enhancing health promoting compounds in food”, Bazaleti, Georgia, September 8-10, 2014.

▪   Vardanyan A.K. Study and assessment of microbial communities in natural and commercial bioleaching processes // 7th International Biohydrometallurgy Symposium (“Biohydromet ‘14”) Falmouth, Cornwall, UK, June 9-11, 2014.

▪   Vardanyan A.K. Immobilization of new isolated bacteria Leptospiillum spp. on natural supporters // International Scientific Conference on Biotechnology, General and Applied Microbiology, Chemistry, Biochemistry, Molecular Biology and Genetics, Environmental Protection, “Contribution of young generation in the development of biotechnology”, Yerevan, 1-4 October, Book of Abstracts, p. 75, 2013.

▪   Vardanyan A.K., Markosyan L.S., Vardanyan N.S. Adhesion of new isolated Leptospirillum-like bacteria and comparative bioleaching of pyrite at elevated temperatures // 20th International Biohydrometallurgy Symposium (IBS 2013),  Antofagasta, Chile.

▪   Vardanyan A.K., Stepanyan S.Kh. Oxidation of sulfide minerals // 2nd Forum of young scientists “Achivements and perspectives of Young scientists”, Aghveran, (Armenia), 1-3 November, 2013, p. 176-182.

▪   Vardanyan A.K., Khachatryan A.N., Stepanyan S.Kh., Vardanyan N.S. Activity of immobilized cells of Leptospiillum ferriphilum and Sulfobacillus thermosulfidooxidans on natural carriers // 5th Congress of European Microbiologists FEMS 2013, Leipzig, Germany, July 21-25, 2013.

▪   Vardanyan A.K., Khachatryan A.N., Stepanyan S.Kh. Study and assessment of microbial communities in natural and commercial bioleaching processes // Electronic Journal of Natural Science, NAS of RA, Young Scientists' Conference, Yerevan, 27-28 June, 2013.

▪   Vardanyan N.S., Vardanyan A.K. Highly Efficient communities of Chemolithotrophic bacteria for extraction of valuable metals from non-conditioned concentrates // Book of Abstracts of Scientific Seminar “Modern State of Biotechnological Developments and Ways of Commersalization“, September 11-12, 2012, Yerevan, Armenia, p. 35.

▪   Vardanyan A.K., Markosyan L.S., Vardanyan N.S. Extraction of non-ferrous and other valuable metals from complex concentrate // Forum of young scientists of Armenia “Achivements and perspectives of Young scientists”, Tsakhkadzor (Armenia), July 13-15, 2012, p. 51-53.

▪   Vardanyan A.K. Dissemination and biodiversity of chemolithotrophic bacteria in sulfide ore deposits of Armenia // Biohydrometallurgy: Biotech Key to Unlock Mineral Value” (IBS2011), Changsha, China, September 18-21, 2011- Changsha, 2011, Volume 2, p. 1010.

Vardanyan N.S., Markosyan L.S., Vardanyan A.K. Selective extraction of metals from zinc concentrate by association of chemolithotrophic bacteria // 4th Congress of European Microbiologists FEMS 2011, Geneva, Switzerland, June 26 – 30, 2011, p.35.

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