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Your search keyword '"A.I Vorobyev"' showing total 3 results
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3 results on '"A.I Vorobyev"'

1. Status of the KEDR detector

Author

M.Yu. Lelchuk, M.Yu. Barnyakov, A.G. Chilingarov, A. N. Yushkov, F. Palombo, L.V Romanov, L.M. Barkov, R Ovechkin, N.I. Root, V. A. Kiselev, P.B. Gaidarev, S.V Pivovarov, A.A. Ruban, G.A. Savinov, S.I. Eidelman, V.A. Sidorov, D.A Epifanov, G.D. Minakov, S.B. Oreshkin, I Bedny, V. F. Kulikov, V. E. Blinov, V.M Malyshev, D.M Beilin, P.F. Manfredi, Evgeny Levichev, Valery I. Telnov, A.M Soukharev, L.A. Leontiev, M.A Shubin, D. N. Shatilov, A.G. Shamov, S.A. Nikitin, P. L. Frabetti, A. Bondar, S. S. Petrosyan, V.N. Kozlov, A.S. Kuzmin, Yu. V. Usov, P. Cantoni, A. R. Buzykaev, S.A. Kononov, Valerio Re, Yu I. Skovpen, Francesco Lanni, B.O Baibusinov, D.V Bondarev, L. Dneprovsky, A. I. Shusharo, Sergey Peleganchuk, A.A Talyshev, B.A. Shwartz, R. Snopkov, V.P Nagaslaev, V.P. Smakhtin, G. M. Kolachev, I. Ya. Protopopov, E.M Baldin, S.V. Karpov, Anton Poluektov, A. P. Onuchin, V. N. Zhilich, A.K. Barladyan, V.M. Aulchenko, V.V. Anashin, L.M. Kurdadze, E. A. Kravchenko, Alexey Maslennikov, V.R. Groshev, A. Sokolov, A. E. Blinov, Yu. A. Tikhonov, A.B. Nomerotsky, S.E. Baru, G. E. Pospelov, S.G. Klimenko, A.I Vorobyev, A. I. Naumenkov, K. Yu Todyshev, V.A. Tayursky, A.V Zatcepin, S.A Kuznecov, and V Balashov

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Meson, Physics::Instrumentation and Detectors, Detector, Linear particle accelerator, Particle detector, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Instrumentation, Energy (signal processing), Cherenkov radiation
Abstract

KEDR is a general-purpose detector for experiments at the VEPP-4M e + e − -collider in the energy range 2 E =2.0– 12 GeV . All detector subsystems (except the aerogel Cherenkov counters) have been installed into the detector at VEPP-4M. Some preliminary data have been taken in the energy region of the J/Ψ meson. The tuning of the detector and the VEPP-4M collider is in progress. Preliminary results on the detector performance are presented. The future experimental program for the KEDR detector is discussed.

Published
2002

2. Chromosome aberrations induced in human bone-marrow cells by therapeutical local γ irradiation

Author

I.I. Suskov, S.A. Petrova, A.I. Vorobyev, E.K. Pyatkin, and N.N. Alexsandrov

Subjects
Genetics, Health, Toxicology and Mutagenesis, medicine.medical_treatment, Cell, Chromosome, Human bone, Biology, Molecular biology, Chromosome aberration, Radiation therapy, medicine.anatomical_structure, medicine, Local irradiation, Irradiation, Molecular Biology, Mitosis
Abstract

Bone-marrow cell chromosome aberrations were studied in 14 unirradiated control patients with malignant tumors and 132 comparable patients after a single localised exposure to 60Co γ irradiation. In control patients the chromosome break frequency was 0.01 per cell and aberrant cell frequency was 1.1%. In 79 patients the dependence of chromosome aberrations on the time interval after irradiation following a dose of 250 rad was studied. The highest frequency of aberrant cells was observed 18 and 21 h after a single irradiation (about 65%). It was shown that the number of chromosome aberrations in cells entering mitosis soon after irradiation (apparently the G2 cells) was much greater (438.1 aberrations per 100 cells) than that in cells entering mitosis in other periods. A sharp decrease in the number of aberrant cells and aberrations was observed 72 and 96 h after irradiation, and especially at 120 and 168 h. In 67 patients the relation between dose and chromosome aberration yield was studied. It was shown that the yield of chromosomally aberrant cells increases linearly with dose, according to the equation Y = 6.385+0.195 s D .

Published
1972
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3. Cytogenetical Study of Bone-marrow in Man after a Single Local Gamma-irradiation: Dose- and Time-relationships

Author

L.I. Dvoretsky, E.K. Pyatkin, and A.I. Vorobyev

Subjects
Adult, Pathology, medicine.medical_specialty, Time Factors, medicine.medical_treatment, Bone Marrow Cells, Chromatids, Biology, Bone Marrow, medicine, Humans, Radiation Genetics, Dosimetry, Radiosensitivity, Irradiation, Radiometry, Mitosis, Aged, Pelvic Neoplasms, Chromosome Aberrations, Chromosome, General Medicine, Middle Aged, Thoracic Neoplasms, Radiation therapy, Cobalt Isotopes, medicine.anatomical_structure, Chromatid, Bone marrow
Abstract

SummaryDirect chromosome studies of bone-marrow cells were made in a control group of four tumour patients and in a group of 39 patients at different intervals of time (1 to 96 hours) after a single local irradiation with 60Co gamma-rays at doses of 50, 100, 150, 200 and 250 rads. The data obtained demonstrated that the frequency and type of chromosome aberrations are dependent on the time after irradiation. The most frequent aberrations induced in bone-marrow cells by gamma-rays are chromatid and chromosome fragments. It was shown that the yield of aberrant cells increases linearly with increase in dose.

Published
1969
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