Tagging High Energy Photons in the H1 Detector at HERA

Measures taken to extend the acceptance of the H1 detector at HERA for photoproduction events are described. These will enable the measurement of electrons scattered in events in the high y range 0.85 < y < 0.95 in the 1998 and 1999 HERA run period. The improvement is achieved by the installation of an electromagnetic calorimeter, the ET8, in the HERA tunnel close to the electron beam line 8 m downstream of the H1 interaction point in the electron direction. The ET8 will allow the study of tagged gamma p interactions at centre-of-mass energies significantly higher than those previously attainable. The calorimeter design and expected performance are discussed, as are results obtained using a prototype placed as close as possible to the position of the ET8 during the 1996 and 1997 HERA running.Comment: 13 pages, 13 figure

A New High Energy Photon Tagger for the H1 - Detector at HERA

The H1 detector at HERA has been upgraded by the addition of a new electromagnetic calorimeter. This is installed in the HERA tunnel close to the electron beam line at a position 8m from the interaction point in the electron beam direction. The new calorimeter extends the acceptance for tagged photoproduction events to the high y range, 0.85 < y < 0.95, and thus significantly improves the capability of H1 to study high energy gamma-p processes. The calorimeter design, performance and first results obtained during the 1996-1999 HERA running are described.Comment: 17 pages, 16 figure

Variability forms of patella in people first and second adulthood

We study the variation form patella in both sexes of different somatotype first and second adulthood MRI studies. It was found that in the first adulthood, almost all somatotypes are characterized I &II shape of the patella by Virburg, whereas in the second adulthood characteristic type only is I of the patella mesomorph of women. Rare types of patella in the first mature age are more common in women ectomorph (III) and women endomorph (IV), whereas in the second adulthood ectomorph women are more likely to have type IV and type III patella male ectomorph. In contrast to the observed distribution of somatotype for both groups of persons from accidental

Hygienic assessment of working conditions on the operator of the milling machine of the industrial enterprise Sredurallift

The article describes the hygienic assessment of the working conditions of the profession of the milling-machine operator of the Yekaterinburg production company Sredurallift.В статье рассмотрена гигиеническая оценка условий труда фрезеровщика на производственном предприятии ООО «Средураллифт» г. Екатеринбурга

Использование технологии разведочного анализа данных – “деревьев классификации” для дифференциальной диагностики типа очагового новообразования в печени при ультразвуковом исследовании с применением метода эластографии сдвиговой волной

The aim: study the possibility of using data elastometry hearth tumors in the liver parenchyma and “unchanged” the liver parenchyma in this patient for the differential diagnosis of tumors in premorphological diagnostic stage.Materials and Methods. 46 patients with liver tumor underwent ultrasound. The stiffness (elastometry)of the tissues in the tumor and intact liver parenchyma was studied. The ultrasound data were compared with the results of morphological studies, obtained by biopsy. Statistical methods for the study included analysis of variance, and to develop decision rules determine the type of tumor formation method of classification of trees applied.Results. During the work we have been able to implement a new approach to the differential diagnosis of focal liver formations based on the simultaneous study of rigidity not only the pathological focus, but also the “intact” parenchyma, lying outside the chamber and away from the capsule of the body. Conclusion. The algorithm allows, based on the measurement of Young’s modulus in the pathological focus in the “intact” parenchyma of the liver to make the conclusion about the nature of the neoplasm.Цель исследования: изучение возможности использования данных эластометрии очага новообразования в паренхиме печени и “неизмененной” паренхимы печени у данного пациента для дифференциальной диагностики характера новообразования на доморфологическом этапе диагностики.Материал и методы. УЗИ проведено 46 пациентам с очаговыми образованиями печени. Изучали жесткость тканей (эластометрия) в очаге опухоли и в неизмененной паренхиме печени. Данные УЗИ сравнивали с результатами морфологических исследований, полученных при биопсии. Статистические методы исследования включали дисперсионый анализ, для разработки решающих правил определения типа опухолевого образования применен метод “деревьев классификации”.Результаты. В ходе работы нам удалось реализовать новый подход к дифференциальной диагностике очаговых образований печени, основанный на одновременном изучении жесткости не только патологического очага, но и “интактной” паренхимы печени, лежащей вне очага и вдали от капсулы данного органа.Заключение. Представленный алгоритм позволяет на основе измерения модуля Юнга в патологическом очаге и в “интактной” паренхиме печени сделать заключение о характере новообразования

The impact of internet technology on the cognitive activities of students

The article explores the main approaches to researching the impact of Internet technologies, including the features of modern online education, on the cognitive activities of young students. The dynamics of cognitive processes: attention and memory are analyzed in students, which are the active Internet users, as well as the impact of the online environment on social cognitive responseВ статье рассмотрены основные подходы к исследованию влияния интернет-технологий, включая особенности современного онлайн-образования, на когнитивную деятельность учащейся молодежи. Проанализирована динамика когнитивных процессов: внимания и памяти у студентов и учащихся — активных пользователей Интернета, а также влияние онлайн-среды на социальное когнитивное реагирование

Characteristic features of damage of coronary arteries in patients with primary ST-elevation myocardial infarction

The aim of the study - to assess the angiographic features of the state of the coronary arteries in primary myocardial infarction with ST segment elevation.Цель исследования - оценить ангиографические особенности состояния коронарных артерий у больных первичным инфарктом миокарда с подъёмом сегмента S

MAGNETIC AND STRUCTURAL PROPERTIES IN Fe7-xMxSe8 (M=Ti, Cr, Ni)

In this work, we synthesized and studied the physical properties of Fe7-xMxSe8 (M=Ti, Cr, Ni) compounds in order to study the effect of substitution in the cationic sublattice on the magnetic ordering temperature and magnitude of the magnetocaloric effect.Работа выполнена при финансовой поддержке Российского научного фонда (грант № 22-13-00158)