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    Гл. ас. д-р  Карамфил Николов Калчев
    Гл. ас. д-р Карамфил Николов Калчев

    Факултет: Факултет по природни науки

    Катедра: БИОЛОГИЯ

    Кабинет: Корпус 1, стая 313

    Телефон: 0885 956 709

    Email: k.kalchev@shu.bg

    Приемно време: І седмица: консултации - четвъртък 10-12 часа; присъствено време: вторник, сряда 8-16ч
    ІІ седмица: консултации четвъртък 10-12 часа; присъствено време вторник, сряда 8-16 часа


    2021 A. Georgieva, L. Yakimov, K. Kalchev, E. Tsvetanova,*N. Chipev& A. Alexandrova (2021). Variations of glutatione level and glutatione related enzymes activities in Mytilus galloprovincialis LAM. from bulgarian black sea coastal region. Ecologia Balkanica, 22, No 2, 532–541
    2020 Sevginar Ibryamova, Nina Arhangelova, Teodora Koynova, Dimitar Dimitrov, Zheni Dimitrova, Radoslav Ivanov, Karamphil Kalchev, Nescho Chipev, Nikolay Natchev, Tsveteslava Ignatova-Ivanova. Antifungal Activity of Lactic Acid Bacteria, Isolated from (Mytilus galloprovincialis Lam.) in The Bulgarian Black Sea aquatory, 2020. Journal of IMAB - Annual Proceeding (Scientific Papers) IF 0.233; Web of sciences,.ISSN: 1312-773X, 26 (1), pp.2875-2882. Q4
    2019 Dilyan Stoyanov, Gergana Manova, Lyubomir Manov, Karamfil Kalchev. Isolation and characteristics of protein-bound polysaccharides produced by Trametes versicolor from the region of the Shumen plateau. Ecology and Environment proceedings of the seventh student scientific conference, Volume 6, 2019,90-95.
    2017 Georgi D Bonchev, Lyubomir Е ManovandKaramfil N Kalchev, 2017. Detecting the presence of antitumor terpenoids in bark of white birch from North-eastern Bulgaria, Journal of Pharmacognosyand Phytochemistry, 6 (2), 164-167, E-ISSN:2278-4136, P-ISSN:2349-8234.
    2016 Kalchev, K., N, Chipev, 2016. Comparative analysis of protease and urease activity in soils from Livingston Island (Antarctica). Science & Technologies, 6(2), 8-14.
    2015 Bachvarova, D., Al. Doichinov, P. Stoev, K. Kalchev, 2015. Habitat preferences and effect of environmental factors on the seasonal activity of Lithobius nigripalpis L. Koch, 1867 (Chilopoda: Lithobiomorpha: Lithobiidae), International Research Journal of Natural Sciences, Vol. 3, № 4, pp. 1-13, ISSN 2053-4116.
    2014 Kalchev, K., 2014. Purification and characterization of proteases from Streptomyces strains. Bulg. J. Agric. Sci., 20 (1): 66–68, IF (0,198).
    2013 Kalchev K., Y. Rabadjiev, D. Ganchev, M. Tzenovaq I. Iliev, I. Ivanova. 2013 Study of proteases and protease inhibitors from Streptomyces strains. Journal of Agricultural Science, 19 (2), 65–67, IF (0,198).
    2009 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009, Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bonemarrow cells, Genetics and Molecular Biology, 32, 2, 389-393
    2009 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009, Determination of cytotoxic effect of 4–bromo–N,N–diethyl–5,5–dimethyl–2,5–dihydro–1,2–oxaphosphol–2–amine2–oxide, Biotechnol. & biotechnol. eq., special edition/on-line., 23, 2, 414-417.
    2009 Kalcheva, V.P., A.P. Dragoeva, K.N. Kalchev, D.D. Enchev, 2009, Low dose genotoxicity of 4-bromo-N,N-diethyl-5,5-dimethyl-2,5-dihydro-1,2-oxaphosphol-2-amine 2-oxide in mice bone marrow cells and Allium cepa L. root tip cells, GENETIKA, 41(2):179-188.
    2021 Borislava Pavlova, Sevginar Ibryamova, Stefani Toschkova, Elitsa Stanachkova, Dimitar Doichev, Karamfil Kalchev, Darina Bachvarova, Nikolay Natchev, Tsveteslava Ignatova-Ivanova. Investigation of the degree of pollution of Varna Lake by the use of white sand mussels as a microbiological biomarker. Ninth student scientific conference “Еcology and environment” April 23-24, 2021. Volume 8. ISSN 2367-5209.
    2019 S. Ibryamova, N. Arhangelova, T. Koynova, D. Dimitrov, Zh. Dimitrova, R. Ivanov, K. Kalchev, N. Chipev, N. Natchev, Ts. Ignatova-Ivanova1. 2019.The radioactivity and microbiological evaluation of Mussels (Mytilus galloprovincialis Lam.) and algae used as a bio-indicator species in the ecological monitoring of The Bulgarian Black Sea waters.29-th Jubilee Annual Assembly of International Medical Association Bulgaria (IMAB) 09 - 12 May 2019.Hotel Admiral, Resort Golden Sands, near Varna, Bulgaria.
    2019 L. Yakimov, G. Nenkova, K. Kalchev, E. Tsvetanova, A. Alexandrova, N. Chipev, Variations of glutathione and glutathione transferases in Mytilus gallaprovincialis LAM. as response to diferent environmental conditions in the northern Bulgarian Black sea aquatory, Sixth International Conference with Youth Scientific Session ECOLOGICAL ENGINEERING AND ENVIRONMENT PROTECTION 5-7 June 2019, Burgas, Bulgaria
    2019 Sevginar Ibryamova, N. Arhangelova, T. Koynova, D. Dimitrov, Zh. Dimitrova, R. Ivanov,K. Kalchev, N. Chipev, N. Natchev, Ts. Ignatova-Ivanova1. 2019.The radioactivity and microbiological evaluation of Mussels (Mytilus galloprovincialis Lam.) and algae used as a bio-indicator species in the ecological monitoring of The Bulgarian Black Sea waters.29-th Jubilee Annual Assembly of International Medical Association Bulgaria (IMAB) 09 - 12 May 2019.Hotel Admiral, Resort Golden Sands, near Varna, Bulgaria.
    2019 Sevginar Ibryamova, N. Arhangelova, T. Koynova, D. Dimitrov, Zh. Dimitrova, R. Ivanov,K. Kalchev, N. Chipev, N. Natchev, Ts. Ignatova-Ivanova1. 2019.The radioactivity and microbiological evaluation of Mussels (Mytilus galloprovincialis Lam.) and algae used as a bio-indicator species in the ecological monitoring of The Bulgarian Black Sea waters.29-th Jubilee Annual Assembly of International Medical Association Bulgaria (IMAB) 09 - 12 May 2019.Hotel Admiral, Resort Golden Sands, near Varna, Bulgaria.
    2018 Radoslavova Маsha, Karamfil Kalchev, Yoanna Simeonova, Simona Valkova, Ralitsa Andreeva - Постер: Chronotype and level of capacity for work - Национална конференция XVI Национална конференция с международно участие "Природни науки 2018", 05.10. - 07.10.2018г. Шумен, България.
    2018 Masha Radoslavova, Karamfil Kalchev, Simona Valkova, Yoanna Simeonova, Ralitsa Andreeva - Постер: Real and optimal start of working time depending on the chronotype - Национална конференция XVI Национална конференция с международно участие "Природни науки 2018", 05.10. - 07.10.2018, Шумен, България
    2018 Simeonova Yoanna, Simona Valkova, Elis Vasfi, Ralitsa Andreeva, Ivanka Raikova, Masha Radoslavova, Karamfil Kalchev, Biological effects of melatonin in the human body, Sixth Student Scientific Conference „Ecology and Environment“ Konstantin Preslavsky University of Shumen, April 20 – 21, 2018, Shumen, Bulgaria, P4
    2018 Simeonova Yoanna, Simona Valkova, Elis Vasfi1, Masha Radoslavova, Karamfil Kalchev, Chronotype: photoperiod at birth, gender and age, Sixth Student Scientific Conference „Ecology and Environment“ Konstantin Preslavsky University of Shumen, April 20 – 21, 2018, Shumen, Bulgaria, P3
    2018 Kalchev Karamfil, Gergana Manova, Lyubomir Manov, Georgi Bonchev, Study of birch bark extract interaction with serum albumin - Национална конференция XVI Национална конференция с международно участие "Природни науки 2018", 05.10. - 07.10.2018г. Шумен, България
    2017 Radoslavova Masha, Karamfil Kalchev, Ralitsa Andreeva, Victoria Krasenova. The Impact of School Start Change on Adolescents Sleep Duration.XV Национална конференция с международно участие "Природни науки 2017". 29.09. - 01.10.2017г. Варна
    2017 Kalchev, K., Chipev N. (2017). Kinetics of soil enzyme activities in different habitats , ХХVII-th International Scientific Conference – 1-2-th June, Starozagorski Mineralni Bani.
    2017 Kalchev, K., Kinetics of soil enzyme activities in different habitats , ХХVII-th International Scientific Conference – 1-2-th June, Starozagorski Mineralni Bani, 2017. 63-64
    2016 Kalchev, K., Chipev N. (2016). Comparative analysis of protease and urease activity in soils from Livingston Island (Antarctica), ХХVI-th International Scientific Conference – 2-3-th June, Starozagorski Mineralni Bani. (доклад)
    2015 Georgieva T., K. Kalchev, 2015, Enzyme activities in soils from different habitats, Third student scientific conference “Ecology and Environment”, Vol. 2, Konstantin Preslavsky University Press, Shumen, 121.
    2012 Калчев К., Изследване на екстрацелуларна протеиназна инхибиторна активност и алкалнофосфатазна активност в някои щамове Streptomices, Сборник научни трудове „40 години Шуменски университет 1971-2011”, Факултет природни науки. Университетско издателство „Еп. К. Преславски”, 2012 стр. 55-60.
    2008 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2008, Effects of a Br-containing oxaphosphole derivative on the body weight and the fertility of male mice, Annualconference of University of Rousse “Angel Kanchev” and U Union of scientists - Rousse, 31.10 - 01.11.2008, 47(1.2), 81-84
    2008 Kalcheva V., K. Kalchev, D. Enchev, 2008, Evaluation of genotoxic potential of commercial mix of granules for rabbits containing Robenidine hydrochloride in in vivo ICR micebone marrow cells, VII national conference with international participation “Natural sciences 2008”, 25-28. 09. 2008, Varna, XIX B 6, 58-72
    2007 Калчев, К., В. Калчева, И. Атанасова, 2007, Проблеми в таксономичния статус на род Apodenus Kaup, 1829, Научна конференция “Природни науки`2006”,28.09-1.10., Годишник на ШУ”Епископ Константин Преславски”, 76-82
    2007 Zagorchev L, K. Kalchev, M. Odjakova, 2007, Получаване на антитела срещу стресови екстрацелуларни белтъци от ембриогенни клетъчни култури на Dactylisglomerata L., чрез фагов дисплей, Annual of Konstatin Preslavsky University, Shumen 2007, Vol. XVII B 3, 166-181
    2006 Енчев D., В. Калчева, К. Калчев, 2006, Биологична активност и генотоксичност на N,N-диетил-5,5-диметил-4-фенилселенил-2,5-дихидро-1,2-оксафосфол-2-амин2-оксид, Годишник на ШУ”Епископ Константин Преславски” т.16В4, 18-30. ISSN1311-834Х
    2006 Калчев K., Я. Сивков, Л. Христов, И. Атанасова, 2006, Таксономично и електрофоретично изследване на представители от род Apodemus (подрод Sylvaemus) врайона на гр. Шумен, Годишник на ШУ”Епископ Константин Преславски” т.16В4, 164-174. ISSN1311-834Х
    2005 Калчев K., Д Енчев, С. Станколов, 2005, Влияние на 2,5-дихидро-1,2-оксафосфол-2-оксиди върху Triticum vulgare L., Cucumis Sativus L., Lycopersicon esculentum Mill,Научни трудове РУ“Ангел Кънчев” – филиал Силистра, Силистра, , т.44 7.1, 235-239. ISSN 1311-3321
    2003 Калчев K., М. Шкодрова, З. Николова, И. Минков, 2003, Влияние на сулфонамидите метансулфонилхидразин и салицилалдехид метансулфонилхидразон върхуАТФазната активност на чернодробни митохондрии, Сборник научни трудове “Природни науки – 2003”, 125-128. ISBN 954-577-161-5
    2002 Калчев K., 2002, Определяне на подвижните форми на Cd, Cu, Mn и Pb в почвени проби от Търговишки регион, Научни трудове на Русенски Университет “АнгелКънчев” т.39 серия 10, 213-217. ISSN 1311-3321
    2002 Калчев K., 2002, Определяне на подвижните форми на Cd, Cu, Mn и Pb в почвени проби от Шуменски регион, Научни трудове на Русенски Университет “АнгелКънчев” т.39 серия 10, 208-212. ISSN
    1999 Ангарска Ж., Кр. Тачев, K. Калчев, 1999, Изследване на адхезионното поведение на еритроцити с мембрани, обогатени с гликофорин, Юбилейна научнаконференция “25 години ШУ “Епископ Константин Преславски”. Шумен, Физика и химия, 168-172. ISBN 954-577-076-7
    2014 Оджакова М., Св. Петрова, А. Александрова, К. Калчев, 2014. Протоколна тетрадка по биохимия. Изд. “Химера” ООД, 122. ISBN 978-954-9775-97-6
    2020 alchealcheva V, A Dragoeva, K Kalchev, D Enchev Low dose genotoxicity of 4-bromo-N, N-diethyl-5, 5-dimethyl-2, 5-dihydro-1, 2-oxaphosphol-2-amine Kalcheva V, A Dragoeva, K Kalchev, D Enchev Low dose genotoxicity of 4-bromo-N, N-diethyl-5, 5-dimethyl-2, 5-dihydro-1, 2-oxaphosphol-2-amine 2-oxide in mice bone marrow cells and Allium cepa L. root tip - Genetika, 2009. ЦИТИРАНА В: Dumei Ma, Shanshan Hu, Sirui Chen, Jiaoting Pan, Song Tu, Yingwu Yin, Yuxing Gao, Yufen Zhao2020 Palladium-Catalyzed Addition/Cyclization of (2-Hydroxyaryl)boronic Acids with Alkynylphosphonates: Access to Phosphacoumarins Organic Letters 22 (20), 8156-8160 DOI: 10.1021/acs.orglett.0c03151
    2020 Kalcheva, V., A. Dragoeva, K. Kalchev, D. Enchev (2009) Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bonemarrow cells. Genetics and Molecular Biology, 32(2):389-393. doi: 10.1590/S1415-47572009000200028, ISSN: 0100-8455 (Web of Science, IF 0.813, Q4) ЦИТИРАНА В: Macar, O. (2020) Multiple toxic effects of tetraconazole in Allium cepa L. meristematic cells. Environmental Science and Pollution Research (2020). https://doi.org/10.1007/s11356-020-11584-4 ISSN 16147499 (WoS, IF 3.600, Q2)
    2019 Bachvarova D., A. Doichinov, P. Stoev, K. Kalchev. Habitat preferences and effect of environmental factors on the seasonal activity of Lithobius nigripalpis L. Koch, 1867 (Chilopoda: Lithobiomorpha: Lithobiidae). International Research Journal of Natural Sciences, Volume 3, № 4, pp. 1-13 (APS Impact Factor = 7.72), 2015. Цитирана в: Simcic, G. (2019). Primernost terenskih ter javno dostopnih okoljskih podatkov za modeliranje razsirjenosti nekaterih vrst strig (Chilopoda) (Doctoral dissertation, Univerza v Ljubljani, Biotehniska fakulteta).
    2018 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Soare LC, NA Sutan 2018 Current Trends in Pteridophyte Extracts: From Plant to Nanoparticles. Pages 329-357 In: Current Advances in Fern Research Fernandez, Helena (Ed.), Springer International Publishing AG, part of Springer Nature.
    2017 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Vinod Jaiswal, Mahesh Samant, Ashiya Kadir, Komal Chaturvedi, A. B. Nawale, V. L. Mathe, P. M. Dongre (2017) UV Radiation Protection by Thermal Plasma Synthesized Zinc Oxide Nanosheets. J Inorg Organomet Polym. 27(5): 1211-1219 (IF 1.577) doi:10.1007/s10904-017-0568-y.
    2017 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Manna I and Bandyopadhyay M (2017) Engineered Nickel Oxide Nanoparticle Causes Substantial Physicochemical Perturbation in Plants. Front. Chem. 5:92. (IF 3.994)
    2016 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Izet Eminovic, Emira Kahrovic, Aner Mesic, Emir Turkusic, Dzenana Kargic, Adnan Zahirovic, Zana Dolicanin 2016 Cytogenotoxic effects of two potential anticancer Ruthenium(III) Schiff Bases complexes. JOURNAL OF HEALTH SCIENCES. DOI: http://dx.doi.org/10.17532/jhsci.2016.357
    2016 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Al-Ansary A.M.F., Nagwa R. Abd-El Hamied, A.M. Abd-El-Hamid, M.E.S. Ottai (2016) Cytogenetic changes and genomic DNA assay of Sudani and Masri Roselle varieties affected by different gamma irradiation doses. International Journal of ChemTech Research Vol.9, No.03 pp 97-107 (SJR 0.21)
    2015 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Rodriguez, Y.A., C. Ap. Christofoletti, J. Pedro, O. C. Bueno, O. Malaspina, R. A. C. Ferreira, C. S. Fontanetti. 2015. Allium cepa and Tradescantia pallida bioassays to evaluate effects of the insecticide imidacloprid. Chemosphere. 120:438-442. (IF 3.499)
    2015 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Njoku, K.L., Akinola, M.O. and Tommy, I. O. (2015) Genotoxicity of industrial paint effluent on the root meristem of Allium cepa. IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT). 9(2):11-17. (SJIF 0.417)
    2015 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: K. Dwivedi and G. Kumar (2015) Genetic Damage Induced by a Food Coloring Dye (Sunset Yellow) on Meristematic Cells of Brassica campestris L. Journal of Environmental and Public Health, Article ID 319727, 5 pages http://dx.doi.org/10.1155/2015/319727 (SJR 0.79)
    2015 Kalchev, K., Rabadjiev, Y., Ganchev, D., Tsenova, M., Iliev, I., & Ivanova, I. (2013). Study of proteases and protease inhibitors from Streptomyces strains. Bulg. J. Agric. Sci, 19(2), 65-67. ЦИТИРАНА В: Ashwini, B., & Manjula, I. K. (2015). Protein fraction from actinomycetes isolates inhibits protease activity secreted by staphylococcus aureus. European Journal of Pharmaceutical and Medical Research, 2(7), 186-193.
    2014 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev (2009) Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology. 32(2): 389-393. (IF 0.58) ЦИТИРАНА В: Жени Димитрова Нанова, 2014, Микроразмножаване на бял риган (Origanum vulgare ssp. Hirtum (Link) Ietswaart) и исоп (Hyssopus оfficinalis L.) и оценка на тяхната цитотоксична активност. Дисертация за присъждане на образователна и научна степен „Доктор”, СУ „Св. Климент Охридски“
    2014 Kalchev, K., Rabadjiev, Y., Ganchev, D., Tsenova, M., Iliev, I., & Ivanova, I. (2013). Study of proteases and protease inhibitors from Streptomyces strains. Bulg. J. Agric. Sci, 19(2), 65-67. ЦИТИРАНА В: El-Hadedy, D. E., Saad, M. M., & Hassan, H. M. (2014). Protease Inhibitor Expression with Immobilized Cells of Egyptian Streptomyces lavendulae on Different Radiated Matrices Using Gamma Radiation. World Journal of Pharmaceutical Sciences, 2(9), 899-913.
    2013 2013г. - Kalcheva V, Dragoeva A, Kalchev K, Enchev D (2009). Determination of cytotoxic effect of 4-bromo-N, N-diethyl-5,5-dimethyl-2,5-dihydro-1,2-oxaphosphol-2-amine 2-oxide. Biotechnol Biotec Eq 23: 414 – 417. Valencia-Quintana, R., J. S. Alarcon, S. Gomez-Arrroyo, J. C. Eslava, S. Waliszewski, S. Fernandez, R. Villalobos-Pietrini (2013) GENOTOXICIDAD DE PLAGUICIDAS EN SISTEMAS VEGETALES, Rev. Int. Contam. Ambie. 29 (Sup. 3) 1-25 (IF 0.169)
    2013 2013г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. ЦИТИРАНА В: Iqbal Lone, M., Nazam, N., Shaikh, S., & Ahmad, W. (2013). Genotoxicity of an organochlorine pesticide dichlorophene by micronucleus and chromosomal aberration assays using bone marrow cells of Rattus norvegicus. Caryologia: International Journal of Cytology, Cytosystematics and Cytogenetics, (ahead-of-print), 1-8. (IF: 0.632)
    2013 2013г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. ЦИТИРАНА В: Truta E., Vochita G., Zamfirache M.M., Olteanu Z., Rosu C.M. Copper-induced genotoxic effects in root meristems of Triticum aestivum L. cv. Beti. Carpathian journal of earth and environmental sciences 01/2013; 8(4):83-92. (IF: 1.495)
    2013 Kalcheva V, A., Dragoeva, K., Kalchev, D., Enchev, 2009. Determination of cytotoxic effect of 4-bromo-N, N-diethyl-5,5-dimethyl-2,5-dihydro-1,2-oxaphosphol-2-amine 2-oxide. Biotechnol Biotec Eq 23: 414 – 417. ЦИТИРАНА В: Jitareanu, A., S. Padureanu, G. Tataringa, Cristina Tuchilus, U. Stanescu, 2013, Evaluation of phytotoxic and mutagenic effects of some cinnamic acid derivatives using the Triticum test, Turkish Journal of Biology, 37 (1) doi:10.3906/biy-1304-39 (IF 0.914)
    2012 2012г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. Цитирано в: Marija Radojkovic, Ekstrakti duda (Morus spp., Morasceae), sastav, delovanje i primena, doktorska disertacija, UNIVERZITET U NOVOM SADU, TEHNOLOSKI FAKULTET, 2012
    2012 2012г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. Цитирано в: Pavle Maskovic, Jelena Dragisic Maksimovic, Vuk Maksimovic, Jelena Blagojevic, Mladen Vujolevic, Nedeljko T. Manojlovic, Marija Radojkovic, Milica Cvijovic and Slavica Solujic. 2012. Biological activities of phenolic compounds and ethanolic extract of Halacsya sendtneri (Boiss) Dorfler. Central European Journal of Biology, 7(2): 327-333. (IF 1)
    2012 2012г. - Kalcheva, V.P., A.P. Dragoeva, K.N. Kalchev, D.D. Enchev 2009 Low dose genotoxicity of 4–bromo–n,n–diethyl–5,5–dimethyl–2,5–dihydro–1,2–oxaphosphol–2–amine 2–oxide in mice bone marrow cells and Allium cepa L. root tip cells. Genetika. 41(2):179-188. Цитирано в: Qu, Z., X. Chen, J. Yuan, Y. Bai, T. Chen, L. Qu, F. Wang, X. Li, Y. Zhao. 2012. New synthetic methodology leading to a series of novel heterocyclic alpha-aminophosphonates: a very attractive expansion of Kabachnik-Fields reaction. Tetrahedron. 68(15):3156-3159. (IF 3.025)
    2011 2011г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. Цитирано в: Abdel-Hameid, N.R., M.A.M. Elanany, A.A.A. Haiba, E.A.A. AbdEl-Hady, 2011. Relative Mutagenecity of Some Food Preservatives on Plant Cells. Australian Journal of Basic and Applied Sciences, 5(12): 2817-2826.
    2011 2011г. - Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393, 2009. Цитирано в: De Micco V., C. Arena, D. Pignalosa and M. Durante. Effects of sparsely and densely ionizing radiation on plants. Radiation and Environmental Biophysics, 50(1): 1-19, 2011.
    2011 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009. Cytotoxic and genotoxic effects of Br-containing oxaphosphole on Allium cepa L. root tip cells and mouse bone marrow cells. Genetics and Molecular Biology, 32(2): 389-393. Цитирано в: Машковис Павле, дипломирани хемичар, је за израду докторске дисертације пријавио тему, Биохемијска активност алкохолног екстракта биљака Halacsya sendtneri, Onosma aucherianum и Kitaibelia vitifolia у функцији количине фенолних једињења. Научно-наставном веhу ПМФ-а у Крагујевцу, 2011.
    2014 Marinova, H.,K. Kalchev. 2014 Characterization of extracellular proteases, protease inhibitors and alkaline phosphatases activities from streptomyces strains, ECOLOGY AND ENVIRONMENT PROCEEDINGS OF THE SECOND STUDENT SCIENTIFIC CONFERENCE, 1:222.
    2013 Kalchev K. 2013 Purifikation and characterization of proteases and protease inhibitors from Streptomyces strains, International conference Bioscience – development and now opportunities-Kliments Deys, 20-22.11. 2013, vol IV, p 99.
    2012 Kalchev K., Y. Rabadjiev, D. Ganchev, M. Tzenovaq I. Iliev, I. Ivanova. 2012 Study of proteases and protease inhibitors from Streptomyces strains. Journal of Agricultural Science, Младежка научна конференция, "Климентови дни", P 45, София, 22-23.11.2012.
    2009 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009. Low dose genotoxicity of 4–bromo–N,N–diethyl–5,5–dimethyl–2,5–dihydro–1,2–oxaphosphol–2–amine 2–oxide in mice bone marrow cells. IV congress of the Serbian genetic society, Р 55, Tara, 1-5.06.2009.
    2009 Kalcheva V., A. Dragoeva, K. Kalchev, D. Enchev, 2009. Low dose genotoxicity of 4–bromo–N,N–diethyl–5,5–dimethyl–2,5–dihydro–1,2–oxaphosphol–2–amine 2–oxide in Allium cepa L. root tip cells. IV congress of the Serbian genetic society, Tara, Р 56, 1-5.06.2009.