Polarization of asteroid (387) Aquitania: the newest member of a class of large inversion angle asteroids

We present new imaging polarimetric observations of two Main Belt asteroids, (234) Barbara and (387) Aquitania, taken in the first half of 2008 using the Dual-Beam Imaging Polarimeter on the University of Hawaii 2.2 meter telescope, located on Mauna Kea, Hawaii. Barbara had been previously shown to exhibit a very unusual polarization-phase curve by Cellino, et al. (2006). Our observations confirm this result and add Aquitania to the growing class of large inversion angle objects. Interestingly, these asteroids show spinel features in their IR spectra suggesting a mineralogical origin to the phase angle-dependent polarimetric features. As spinel is associated with calcium-aluminum-rich inclusions and carbonaceous chondrites, these large inversion angle asteroids may represent some of the oldest surfaces in the solar system. Circular as well as linear polarization measurements were obtained but circular polarization was not detected.Comment: 12 pages, 2 figures, accepted to Icaru

Predicting total reaction cross sections for nucleon-nucleus scattering

Nucleon total reaction and neutron total cross sections to 300 MeV for 12C and 208Pb, and for 65 MeV spanning the mass range, are predicted using coordinate space optical potentials formed by full folding of effective nucleon-nucleon interactions with realistic nuclear ground state densities. Good to excellent agreement is found with existing data.Comment: 10 pages, 4 figure

Применение вейвлет-анализа для фильтрации электрокардиографических данных

Показано можливість застосування вейвлет-перетворення для фільтрації електрокардіографічних даних, що дозволяє зробити не тільки відсічення сторонніх шумів, відновлення ізолінії та виділення інтервалів R-R, але і враховувати локалізацію особливостей електрокардіосигналу при його фільтрації.The opportunity of application wavelet-transformation for a filtration electrocardiography the data that allows to make not only cutting off of extraneous noise, restoration isoline and allocation of intervals R-R but also to take into account localization of features electrocardiosignal at his filtration.Показано возможность использования вейвлет-преобразования для фильтрации электрокардиографических данных, что позволяет сделать не только отсечение посторонних шумов, восстановление изолинии и выделение интервалов R-R, но и учитывать локализацию особенностей электрокардиосигнала при его фильтрации

Efficiency of the "routine" external choledoch drainage method for patients with acute cholecystitis

Purpose of the study: To justify the efficiency of 'routine' choledoch drainage for patients suffering from acute cholecystitis. Materials and methods: The study was carried out at the Septic Surgery Department, Rostov-on-Don Emergency Care Hospital. The survey included 532 patients with various forms of acute cholecystitis admitted to the surgery department from 2016 through 2017. Age of the patients: 38 to 67 years. All patients were operated (laparoscopic cholecystectomy), with a 'routine' choledoch drainage performed according to an original method (RF Patent No. 2218949). Results: Results collected during the study demonstrated advisability and effectiveness of the method, which did not only prevent reoperation but also facilitated quick post-surgery organism rehabilitation. Whenever the 'routine' choledoch drainage method was used, during the postoperative care period we diagnosed choledocholithiasis in 14,8% of cases representing an indication for endoscopic papillosphincterotomy, in 82,4% of cases we noted early normalization of the total bilirubin and hemodiastase levels, improvement of the patients' condition, and shorter stay at the in-patient department. Conclusions: The range of indications for choledoch drainage in cases of acute cholecystitis should be expanded. Our method allows to reduce the number of postoperative complications and shorten the hospital stay representing both a positive factor for patients, and economic benefit for the department.Цель исследования: Обосновать эффективность использования «рутинного» дренирования холедоха у пациентов с острым холециститом. Материалы и методы: Работа выполнена на базе хирургического отделения МБУЗ ГБСМП г. Ростова-на-Дону. В исследование вошли 532 пациента с различными формами острого холецистита, находившихся на лечении в хирургическом отделении с 2016 по 2017 год. Возраст пациентов от 38 до 67 лет. Все пациенты были прооперированы (лапароскопическая холецистэктомия), выполнено «рутинное» дренирование холедоха по оригинальной методике (Федеральный патент РФ №2218949). Результаты: Полученные в ходе исследования результаты показали целесообразность и эффективность метода, которая заключается не только в предотвращении повторных операций, но и быстрой реабилитации организма после операции. При использовании «рутинного» дренирования холедоха, в послеоперационном периоде, нами был диагностирован холедохолитиазв 14,6% случаев, что явилось показанием к выполнению эндоскопической папиллосфинктеротомии, у 82,4% была отмечена ранняя нормализацию уровня общего билирубина и амилазы крови, улучшение состояния пациентов, и сокращение сроков пребывания в стационаре. Выводы: Необходимо расширить показания к выполнению дренирования холедоха при остром холецистите. Наша методика позволяет своевременно диагностировать нарушения желчеоттока, сократить количество послеоперационных осложнений, и срок пребывания пациентов в стационаре, что является не только положительным фактором для пациента, но и экономически выгодным для отделения

APPRAISAL OF FINAL TAILINGS APPLICABILITY FOR PROCESSING AND PRODUCTION OF MODIFIERS OF IRON-CARBON ALLOYS

The methodology of rating of the galvanic final tailings applicability for further processing in the interests of needs of metallurgical production of the Republic Belarus is offered

SUITABILITY OF CU-AND NI-CONTAINING GALVANIC FINAL TAILINGS FOR PROCESSING IN ADDITION ALLOYS FOR IRON-CARBON METAL

The problems of galvanic production waste recovery, conditions, influencing on the final tailings composition, influence of the chemical composition of final tailings on the ways of their recovery are examined

Elements of lead metabolism in the body of dairy cows

The article is devoted to the actual problem of studying the peculiarities of lead exchange in the organism of dairy cows in conditions of winter and summer feeding rations. The experimental and analytical part of the research was carried out at the All-Russian Scientific Research Institute of Reclaimed Lands (FGBNU VNIIMZ) on cows of black-nosed breed with productivity of 4600.5000 kg of milk. To study the exchange of macro- and microelements in the body of cows, physiological experiments were carried out according to the methods of the FGBNU VIZH and FGBNU VIC and zootechnical analysis taking into account the recommendations. In the experiments it was provided by the methodical principle of “unity of intergroup differences” and the presence of the control animals. It is possible to obtain objective comparative experimental data and credible conclusions based on mathematical processing using statistical computer programs. Results of physiological test were studied by correlation and regression analyzes. The method of correlation analysis determined mutual dependence of lead content in the feed, feces, urine, milk, and in the body of animals on its content in a ration. It has allowed to reveal total (linear) relationship in the metabolism of the element occurring in an organism of the animal in the winter and summer feeding rations. Equations the pair non-linear regression, showing the dependence of the content of a particular chemical element in the feces, urine, breast milk, and in the body of an animal from its content in a ration, make it possible to identify the true form of communication, due to the influence factor of the element content in ration on the chemical composition of the products, and animal excrement. In experiments with dairy cows (balance tests) characteristics of lead intake in the body of animals with food and water, the degree of removing it from the feces and urine were installed, as well as the degree of contamination of milk

Use of Complex Technique of Geological Interpretation of Geophysical Fields for Prediction of Possible Values of Velocles of Modern Vertical Movements of the Earth's Crust

В статье рассмотрена возможность прогнозирования скоростей современных вертикальных движений земной коры (СВДЗК) с использованием комплексной методики геологической интерпретации геофизических полей Архангельского – Федынского – Фотиади. Выполнен поиск связей скоростей СВДЗК с аномальным гравитацион-ным и магнитным полями, рельефом дневной поверхности, мощностью земной коры для одной геологической струк-туры территории Республики Беларусь в виде Оршанской впадины путем применения интегрального соотноше-ния Каратаева – Ватлина – Захаровой. На основании результатов прогнозирования построена модельная карта скоростей СВДЗК, имеющая достаточную точность и достоверность для практического использования