91 research outputs found

    "Tomography" of the cluster structure of light nuclei via relativistic dissociation

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    These lecture notes present the capabilities of relativistic nuclear physics for the development of the physics of nuclear clusters. Nuclear track emulsion continues to be an effective technique for pilot studies that allows one, in particular, to study the cluster dissociation of a wide variety of light relativistic nuclei within a common approach. Despite the fact that the capabilities of the relativistic fragmentation for the study of nuclear clustering were recognized quite a long time ago, electronic experiments have not been able to come closer to an integrated analysis of ensembles of relativistic fragments. The continued pause in the investigation of the "fine" structure of relativistic fragmentation has led to resumption of regular exposures of nuclear emulsions in beams of light nuclei produced for the first time at the Nuclotron of the Joint Institute for Nuclear Research (JINR, Dubna). To date, an analysis of the peripheral interactions of relativistic isotopes of beryllium, boron, carbon and nitrogen, including radioactive ones, with nuclei of the emulsion composition, has been performed, which allows the clustering pattern to be presented for a whole family of light nuclei.Comment: ISBN 978-3-319-01076-2. 55 pages, 28 figure

    Fragmentation and Multifragmentation of 10.6A GeV Gold Nuclei

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    We present the results of a study performed on the interactions of 10.6A GeV gold nuclei in nuclear emulsions. In a minimum bias sample of 1311 interac- tions, 5260 helium nuclei and 2622 heavy fragments were observed as Au projec- tile fragments. The experimental data are analyzed with particular emphasis of target separation interactions in emulsions and study of criticalexponents. Multiplicity distributions of the fast-moving projectile fragments are inves- tigated. Charged fragment moments, conditional moments as well as two and three -body asymmetries of the fast moving projectile particles are determined in terms of the total charge remaining bound in the multiply charged projectile fragments. Some differences in the average yields of helium nuclei and heavier fragments are observed, which may be attributed to a target effect. However, two and three-body asymmetries and conditional moments indicate that the breakup mechanism of the projectile seems to be independent of target mass. We looked for evidence of critical point observable in finite nuclei by study the resulting charged fragments distributions. We have obtained the values for the critical exponents gamma, beta and tau and compare our results with those at lower energy experiment (1.0A GeV data). The values suggest that a phase transition like behavior, is observed.Comment: latex, revtex, 28 pages, 12 figures, 3tables, submitted to Europysics Journal

    Effect of combined oral contraceptives conaining drospirenone + ethinylestradiol on the mammary gland condition in women of reproductive age

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    Drospirenone, as a part of combined oral contraceptives, has an antiproliferative effect on hyperplastic processes in the organs of the female reproductive system. Individual selection of COCs taking into account the dose and properties of the gestagenic and estrogenic components allows, with contraceptive and non-contraceptive purposes, to prescribe it to women of reproductive age. Intake of COC containing drospirenone + ethinyl estradiol is not associated with impaired drug tolerance due to complaints of soreness and breast engorgement in the first 3 months. 6 months of COCs containing drospirenone + ethinyl estradiol are significantly associated with a decrease in the frequency of clinical and US-signs of dyshormonal dysplasia of the breast. © 2018 Stavropol State Medical University. All rights reserved

    Effect of combined oral contraceptives conaining drospirenone + ethinylestradiol on the mammary gland condition in women of reproductive age

    No full text
    Drospirenone, as a part of combined oral contraceptives, has an antiproliferative effect on hyperplastic processes in the organs of the female reproductive system. Individual selection of COCs taking into account the dose and properties of the gestagenic and estrogenic components allows, with contraceptive and non-contraceptive purposes, to prescribe it to women of reproductive age. Intake of COC containing drospirenone + ethinyl estradiol is not associated with impaired drug tolerance due to complaints of soreness and breast engorgement in the first 3 months. 6 months of COCs containing drospirenone + ethinyl estradiol are significantly associated with a decrease in the frequency of clinical and US-signs of dyshormonal dysplasia of the breast. © 2018 Stavropol State Medical University. All rights reserved
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