Fragmentation and Multifragmentation of 10.6A GeV Gold Nuclei

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

Концептуальные подходы к поиску эффективного лечения новой коронавирусной инфекции на разных этапах

The article attempts to analyze the change in philosophy in approaches to the treatment of COVID-19 that have occurred in recent months, based on published research and their own experience in the treatment of a new coronavirus infection at the medical research and education center of Moscow state University. Emphasis is placed on the rationale for the phased use of different types of therapy. The reasons for using spironolactone in patients with COVID-19 as a drug for etiotropic and pathogenetic therapy are discussed in detail. The authors conclude that the use of antiviral drugs in combination with drugs that prevent the entry of the SARS-CoV-2 virus into cells from the first days of the disease should be supplemented with pre-emptive anti-inflammatory therapy that interrupts the progression of the disease. The parallel use of anticoagulants that reduce the risk of thrombotic and thromboembolic complications.В статье проведена попытка проанализировать изменение философии в подходах к лечению COVID-19, которые произошли в течение последних месяцев, на основе опубликованных научных исследований и собственного опыта лечения новой коронавирусной инфекции в Медицинском научно-образовательном центре МГУ (МНОЦ МГУ), который в разгар эпидемии работал как COVID-госпиталь. Делается акцент на обосновании этапного использования разных видов терапии. Подробно обсуждаются основания для применения у пациентов с COVID-19 спиронолактона как препарата для этиотропной и патогенетической терапии. Авторы приходят к выводу, что применение с самых первых дней болезни противовирусных препаратов в комбинации с препаратами, препятствующими входу вируса SARS-CoV-2 в клетки, должно быть дополнено упреждающей противовоспалительной терапией, прерывающей прогрессирование болезни, и параллельным использованием антикоагулянтов, снижающих риск тромботических и тромбоэмболических осложнений

New way of closure of upper jaw defects [Новый способ замещения дефектов верхней челюсти]

Article describes new original way of one-stage closure of upper jaw defects by using cutaneous-adiposal flap. The method is patented (patent of the Russian Federation for invention No. 2489096). We propose to use cutaneous-adiposal flap, mobilized in nasolabial furrow area, with axial pattern blood supply from angular artery and vein, by rotating to defect through buccal tonnel. This method allows to reliably eliminate upper jaw defect, improve functional and aesthetic results of treatment with minimal injuries caused by operation. Objective is to introduce new way of closure of upper jaw defects. © 2021 Psychological Science and Education All rights reserved