11 research outputs found
Creation of the precision magnetic spectrometer SCAN-3
The new JINR project [1] is aimed at studies of highly excited nuclear matter created in nuclei by a high-energy deuteron beam. The matter is studied through observation of its particular decay products - pairs of energetic particles with a wide opening angle, close to 180°. The new precision hybrid magnetic spectrometer SCAN-3 is to be built for detecting charged (π±, K±, p) and neutral (n) particles produced at the JINR Nuclotron internal target in dA collisions. One of the main and complex tasks is a study of low-energy ηA interaction and a search for η-bound states (η-mesic nuclei). Basic elements of the spectrometer and its characteristics are discussed in the article
Effect of technology parameters on the quality of nZnSe(X)/Ni Schottky diodes
Effect of technology parameters on the quality of nZnSe(X)/Nl Schottky's surface barrier structure used as components of UV photosensitive detectors are studied. Both the spectrum and the total sensitivity of photodiodes depend substantially on the nickel film thickness. Estimation of the film thickness showed that optimal nickel layer thickness is ~ 20 nm. The shape of spectral sensitivity curve does not depend on activator impurity in the ZnSe crystal which the diode is formed from.Вивчено вплив технологічних параметрів, а також проведено пошук причин, що впливають на основні вихідні параметри поверхнево-бар'єрної структури Шоткі ZnSe(X)/Ni, яка є основним компонентом при створенні детекторів УФ-випромінювання. Встановлено, що як спектр, так і інтегральна чутливість фотодіодів суттєво залежать від товщини плівки нікелю, причому оптимальною можна вважати товщину близько 20 нм. Форма спектральної чутливості не залежить від активуючої домішки у кристалі ZnSe, з якого формується діод.Изучено влияние технологических параметров, влияющих на основные выходные параметры поверхностно-барьерной структуры Шоттки nZnSe(X)/Ni, которая является основным компонентом при создании детекторов УФ излучения. Установлено, что как спектр, так и интегральная чувствительность фотодиодов существенно зависят от толщины пленки никеля, причем оптимальной можно считать толщину порядка 20 нм. Форма кривой спектральной чувствительности не зависит от активирующей добавки в кристалле ZnSe, из которого формируется диод
Studies of thin wear-resistant carbon coatings and structures formed by thermal evaporation in a vacuum on piezoceramic materials
In children with bronchial asthma: Causal, complicated, unspecified, reverse
The review, based on modern literature data and the results of many years of research conducted by the authors, highlights the problem of comorbidity (multimorbidity) in children with bronchial asthma (BA). There is a grouping of concomitant diseases in children with asthma depending on the type of comorbidity (causal, complicated, unspecified, reverse). Based on epidemiological data, observational and cohort studies, systematic reviews and meta-analyses, information on the frequency of BA in children with various comorbid diseases and comorbid diseases in children with BA was summarized. Scientific, theoretical and practical significance of comorbidity in BA, diagnostic and treatment programs in pediatric patients suffering from BA and comorbid diseases are substantiated. © 2021, Pediatria Ltd.. All rights reserved