Перегляд за автором "Medvedeva, E.P."

Сортувати за: Порядок: Результатів:

  • Analysis of structural transformations in natural quartzites under the influence of gamma irradiation 
    Bereznyak, E.P.; Dikiy, N.P.; Kolodiy, I.V.; Medvedeva, E.P.; Khodyreva, Yu.S. (Вопросы атомной науки и техники, 2021)
    Using the methods of IR spectroscopy, crystal-optical and XRD analysis the evolution of the structure of Ovruch deposit natural quartzites under the influence of γ-irradiation in the range of absorbed doses (Dabs = 10⁶…3.5⋅10⁷ ...
  • Analysis of uranium mobility and concentration process in objects of environment and patients’ kidney stones in Kharkiv region 
    Dikiy, N.P.; Lisovoy, V.N.; Bereznyak, E.P.; Kolupayev, S.M.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V.; Hodyreva, Y.S. (Вопросы атомной науки и техники, 2021)
    The specific activity of ²³⁵U and content of native uranium for the Kharkiv region in drinking water, soil, roots, the leaf of hydrophyte “Pistia stratiotes” and the samples of kidney stones obtained from patients with ...
  • Antineoplastic therapy by radioactive cisplatin in experiment 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Y.V.; Medvedeva, E.P.; Medvedev, D.V.; Uvarov, V.L. (Вопросы атомной науки и техники, 2007)
    The method of ¹⁹⁵mPt production on linear electron accelerators and cyclotron of NSC KIPT are described. The method of ¹⁹⁵mPt separation from the irradiated samples are developed. The methods of cisplatin synthesis with ...
  • Application of gamma activation analysis for research of Cs and I diffusion into a glassceramic matrix 
    Dikiy, N.P.; Gabelkov, S.V.; Dovbnya, A.N.; Lyashko, Yu.V.; Medvedeva, E.P.; Saenko, S.Yu.; Surkov, A.E.; Tarasov, V.V.; Uvarov, V.L.; Fedorets, I.D.; Holomeev, G.A.; Borovlev, V.I.; Zabolotny, V.D.; Medvedev, D.V. (Вопросы атомной науки и техники, 2006)
    Nuclear reactions ¹³³Cs(γ,n)¹³²Cs, ¹²⁷I(γ,n)¹²⁶I were utilized for research of Cs and I diffusion in glassceramic matrices. The glassceramic matrix was manufactured with the help of hot isostatic pressing at 910°C and ...
  • Application of linac for study of diffusion macro- and trace elements in minerals used at vacuum drying 
    Dikiy, N.P.; Dovbnya, A.N.; Kutovoy, V.A.; Medvedeva, E.P. (Вопросы атомной науки и техники, 2004)
    The gamma activation analysis at the powerful linear accelerator was used for study of element diffusion in minerals of heating elements before vacuum drying. It is shown, that after vacuum drying the transition of ...
  • Cesium, strontium and sodium diffusion in magnesium kalium phosphates system 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Yu.V.; Medvedev, D.V.; Medvedeva, E.P.; Repikhov, O.A.; Saenko, S.Y.; Shkuropatenko, V.A.; Tarasov, R.V.; Fedorets, I.D.; Khlapova, N.P. (Вопросы атомной науки и техники, 2014)
    Nuclear-physical methods have been used for determination of diffusion coefficient of Cs, Na, Sr and Ga in samples on the basis of Ceramicrete which contained simulators of a liquid radioactive waste of "Hanford-1", KW and ...
  • Comparative analysis of pulsed and steady radiation influence on dynamic of extractives 
    Dikiy, N.P.; Dovbnya, A.N.; Kutovoy, V.A.; Kutovoy, S.V.; Medvedeva, E.P.; Medvedev, D.V.; Borisenko, V.N. (Вопросы атомной науки и техники, 2006)
    An electron accelerator has been applied to radiation technology for extraction of grape polyphenols after the grape being preliminary dried in vacuum. It is shown that the extraction process is more effective while the ...
  • Elemental, phase and structural analysis of gallstones with hiatal hernias in patients of Kharkiv region 
    Dikiy, N.P.; Bereznyak, E.P.; Boyko, V.V.; Medvedeva, E.P.; Parhomenko, K.Yu.; Parhomenko, T.A.; Hodyreva, Y.S. (Вопросы атомной науки и техники, 2020)
    Gamma activation method on linac NSC KIPT, IR-spectrometry and crystal-optical investigations have been used to determinate the content of elements, the phase analysis and structural features of a different organic and ...
  • Estimation of the absorbed doses of synthesized cisplatin with ¹⁹⁵mPt in various organs of animals 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Y.V.; Medvedeva, E.P.; Medvedev, D.V.; Uvarov, V.L.; Gritsan, L.D.; Onishchenko, N.I. (Вопросы атомной науки и техники, 2008)
    195mPt has been obtained in reaction ¹⁹⁷Au(g,np)¹⁹⁵mPt on the electron linear accelerator with energy 40 MeV and current 10 mA. To produce ¹⁹⁵mPt from a target of gold the extractor such as Kuchera-Shtoly was needed. The ...
  • Gamma-activation method for the element analysis of agricultural products after vacuum drying 
    Dikiy, N.P.; Kutovoy, V.A.; Kutovoy, S.V.; Lyachko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V.; Nikolaenko, A.A.; Onishchenko, N.I.; Uvarov, V.L.; Fedorets, I.D.; Grytsan, L.D. (Вопросы атомной науки и техники, 2004)
    Development of the combined technologies of drying allows one to speed up the process of moisture moving away from the dried material and to decrease the energy consumption per the production unit. The composition of macro- ...
  • Imbalance of essential and toxic elements in the biosamples of patients with surface gastritis with different secretory activity 
    Dikiy, N.P.; Layshko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V.; Parhomenko, T.А.; Parhomenko, K.Yu. (Problems of Atomic Science and Technology, 2022)
    The results of the application of various nuclear physics methods (characteristic X-ray radiation, gamma-activation analysis, and X-ray fluorescence analysis) to the study of the imbalance of certain elements in various ...
  • Influence of ionizing radiation on the elemental content and structure of natural minerals 
    Dikiy, N.P.; Bereznyak, E.P.; Layshko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V. (Problems of Atomic Science and Technology, 2022)
    The granites of the Ukrainian crystalline shield and the Donetsk-Dnieper hollow of the Pre-Cambrian basement, discovered at a depth of 840…900 to 3420 m were irradiated on a KUT-1 linear electron accelerator with the ...
  • Investigation of actinide simulators migration in granite and tuff irradiated by gamma-quanta 
    Dubinko, V.I.; Dovbnya, A.N.; Sayenko, S.Yu.; Dikiy, N.P.; Shevyakova, E.P.; Grytsyna, V.M.; Surkov, A.E.; Bereznyak, E.P.; Lyashko, Yu.V.; Medvedeva, E.P. (Вопросы атомной науки и техники, 2006)
    Granite and tuff specimens have been γ- irradiated to the absorbed doses ranging from 10⁷ to 3.0·10⁸ Gy. Penetration profiles of cerium ¹³⁹Ce (actinide simulator) in granite and tuff specimens (before and after ...
  • Investigation of granite rocks radiation-chemical durability 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Yu.V.; Medvedeva, E.P.; Sayenko, S.Yu.; Tarasov, R.V.; Uvarov, V.L.; Kholomeyev, G.A.; Shevyakova, E.P.; Fedorets, I.D. (Вопросы атомной науки и техники, 2002)
    Gamma-activation analysis is used to study dynamics of leaching of various elements from granite samples. The sample preliminary irradiation and activation was carried out in the field of bremsstrahlung of electron ...
  • Ion exchange in photoactivated inorganic matters 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Yu.V.; Medvedev, D.V.; Medvedeva, E.P.; Parhomenko, Yu.G.; Uvarov, V.L.; Fedorets, I.D. (Вопросы атомной науки и техники, 2017)
    The effects of monovalent and bivalent impurities on the diffusive mobility sodium, caesium and strontium in magnesium potassium phosphate hexahydrate and clinoptilolite were analysed. It was determined that ratio of ...
  • Kinetics of ¹⁵³Sm oxabiphor in the blood of cancer patients undergoing complex therapy for bone metastasis 
    Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Bodnar, E.N.; Grushka, A.V.; Krasnoselsky, N.V.; Paskevich, O.N. (Вопросы атомной науки и техники, 2015)
    Concentration ¹⁵³Sm in the blood of patients with bone metastasis after radionuclide therapy was determined. Considerable variation of the content of ¹⁵³Sm in blood of patients with various primary cancers from 10 to 65 ...
  • Low doses of radiation: epidemiological investigations 
    Dikiy, N.P.; Dovbnya, A.N.; Medvedeva, E.P. (Вопросы атомной науки и техники, 2013)
    Influence of small dozes of radiation was investigated with the help epidemiologic evidence. Correlation analysis, regression analysis and frequency analysis were used for investigating morbidity of various cancer illnesses. ...
  • Mechanisms of morphology death of tumor cell by effect non-radioactive and radioactive ¹⁹⁵ᵐPt-cisplatin 
    Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V. (Вопросы атомной науки и техники, 2021)
    The photonuclear technology of preparation radioactive cisplatin ¹⁹⁵ᵐPt was been developed by the bremsstrahlung from the electron accelerators. In the novel technology, the production of ¹⁹⁵ᵐPt from reaction ¹⁹⁷Au(γ,np)¹⁹⁵ᵐPt ...
  • Men-made radionuclides in lichens and mosses of the Kharkiv region 
    Dikiy, N.P.; Lyashko, Yu.V.; Medvedeva, E.P.; Katalevskaya, D.S.; Medvedev, D.V.; Parkhomenko, Yu.G.; Yatsuk, M.A.; Fedorets, I.D. (Вопросы атомной науки и техники, 2016)
    Проведено вимірювання питомої активності радіонуклідів у ґрунті, моховинні, лишайниках, листяних деревах та хвойній фітомасі. Вивчені особливості надходження и накопичення радіонуклідів ¹³⁷Cs, ⁴⁰К, ²²⁶Ra та інших у ...
  • Nanostructural deactivating agents selective to caesium 
    Dikiy, N.P.; Dovbnya, A.N.; Lyashko, Yu.V.; Medvedeva, E.P.; Medvedev, D.V.; Uvarov, V.L.; Fedorets, I.D.; Khlapova, N.P.; Bakay, D.S. (Вопросы атомной науки и техники, 2011)
    The chemical reactivity of nanostructural clinoptilolite and γ-hematite which have highly selective for ¹³²Cs sorption from polyethylene surface and for liquid environments are studied. There are different components besides ...