Discrete Modified Nanostructural Wearproof Coatings TiN-Cu

Discrete modified nanostructural wearproof coatings Ti-N-Cu with crystallites size from 100 to 20 nanometers formed with ion-plasma vacuum-arc method. Copper amount in the received coatings made from 0 to 20 at. %, their hardness have considerably increased up to about 40-45 hPa in comparison with 20-22 hPa for Ti-N coverings. In this work, processes of structure and phase formation of Ti-N-Cu system coatings in a wide interval of copper concentration are investigated. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3531

Multilayer Nanostructured Wear-Resistant Coatings with Increased Thermal Stability, Adapted to Varying Friction Conditions

The work covers studying of influence of indexes of an ion-plasma vacuum-arc deposition method to the structure, composition and properties of Ti-Al-N/Zr-Nb-N/Cr-N multilayer nanostructured coatings (MNC). The average crystallites size within the layers is about 5-10 nm. Received coatings are featured by absence of any change in the composition and properties after heating up to 1000 ºС, the coatings hardness is up to 36,6GPa, Young's modulus of elasticity is up to 580 GPa, plastic work of deformation is up to 64 %, adhesive strength is about 100 N and coefficient of friction is 0,45. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3531

Modelling of ceramic coatings grow during Arc-PVD deposition

This paper presents the results of modeling the growth of ceramic coatings obtained by the LDPE method. In the considered model, the possibility of forming misoriented grains relative to each other both in the direction of coating growth and in the growth plane is realized. To verify the model, three coatings of different compositions were prepared and their structure was studied by XRD, TEM, and XPS methods.The reported study was funded by RFBR, project number 19-38-90113

Possibilities of producing a highly disperse composite material in a pulsed high-enthalpy flow

10.00; Translated from Russian (Fiz. Khim. Obrab. Mater. 1987 v. 21(1) p. 111-115)SIGLEAvailable from British Library Document Supply Centre- DSC:9023.19(VR-Trans--3901)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Информативность антеи интранатальных факторов риска развития бронхолегочной дисплазии у недоношенных новорожденных

Aim of the study. To identify the leading antenatal and intranatal risk factors for bronchopulmonary dysplasia based on the analysis of their prevalence and information contentMaterials and methods. We performed a prospective follow-up of 124 infants of gestational age of less than 32 weeks with the classical form of bronchopulmonary dysplasia (study group). The control group included 119 newborns with gestational age of less than 32 weeks without bronchopulmonary dysplasia. The parents of the compared groups were questioned, with the following assessment of the prevalence and informative value of antenatal and intranatal risk factors. Results. The leading antenatal and intranatal risk factors for the development of bronchopulmonary dysplasia are: acute respiratory viral infection in II-III trimester, threatened miscarriage, intrauterine growth retardation, Apgar score at the 1st (3 or less) and 5th minute (5 or less), body weight of less than 1400g at birth, body length less than 36 cm at birth, cesarean section, more then 6-hours waterless period. Conclusion. The combination of these intranatal and antenatal risk factors can be attributed to a group with high risk of bronchopulmonary dysplasia.Цель исследования. Выделение ведущих анте- и интранатальных факторов риска развития бронхолегочной дисплазии на основе анализа их распространенности и информативности.Материал и методы. Проведено проспективное наблюдение за 124 младенцами гестационного возраста менее 32 нед с классической формой бронхолегочной дисплазии (основная группа). Контролем служили 119 новорожденных со сроком гестации менее 32 нед без бронхолегочной дисплазии. На основе анкетирования проведен опрос родителей сравниваемых групп с последующей оценкой распространенности и информативности анте- и интранатальных факторов риска. Результаты. Ведущими анте- и интранатальными факторами риска развития бронхолегочной дисплазии служат присоединение острой респираторной вирусной инфекции во II-III триместре, угроза прерывания беременности, задержка внутриутробного развития плода, низкая оценка по шкале Апгар на 1-й (3 балла и менее) и 5-й (5 баллов и менее) минутах, масса тела при рождении менее 1400 г, длина тела при рождении менее 36 см, выполнение кесарева сечения, безводный промежуток более 6 ч. Заключение. Сочетание указанных интра- и антенатальных факторов дает основание отнести новорожденных к высокой группе риска формирования бронхолегочной дисплазии

Laboratory diagnostics of ovarian cancer among the elderly in the parameters of immunoglobulins and phagocytic activity of blood

Due to the increase in the proportion of elderly women, the prevalence of ovarian cancer is increasing, which requires the search for new methods of its diagnosis. The aim of the work is to analyze the content and informativeness of immunoglobulins and phagocytic activity of peripheral blood to improve the diagnosis of ovarian cancer among elderly women. In 78 patients with ovarian cancer aged 65-70 years immunological and spectrophotometric methods studied phagocytic activity and the level of peripheral blood immunoglobulins. 42 women of the same age with no ovarian cancer served as control. The primary importance of circulating immune complexes, phagocyte migration inhibition index and neutrophil activity index for laboratory diagnosis of ovarian cancer among the elderly was established. The use of highly informative parameters of systemic immunity improves the diagnosis of ovarian cancer in the elderly.В связи с увеличением доли пожилых женщин возрастает распространенность рака яичников, что требует поиска новых методов его диагностики. Цель работы — анализ содержания и информативности иммуноглобулинов и фагоцитарной активности периферической крови для улучшения диагностики рака яичников у женщин пожилого возраста. У 78 больных 65–70 лет с раком яичников иммунологическим и спектрофотометрическим методами изучены фагоцитарная активность и уровень иммуноглобулинов периферической крови. Контрольную группу составили 42 женщины такого же возраста с отсутствием рака яичников. Установлено первостепенное значение ЦИК, индекса ингибиции миграции фагоцитов и показателя активности нейтрофилов для лабораторной диагностики рака яичников у лиц пожилого возраста. Использование высокоинформативных параметров системного иммунитета улучшает диагностику рака яичников у пожилых

Laboratory Diagnostics of Ovarian Cancer among the Elderly Based on the Parameters of Immunoglobulins and Phagocytic Activity of Blood

Abstract: New diagnostic methods are being sought for ovarian cancer due to its higher prevalence, which is the result of an increase in the share of elderly women. The purpose of this study was to analyze the content and sensitivity of immunoglobulins and the phagocytic activity of peripheral blood in order to improve the diagnostics of ovarian cancer among elderly women. The phagocytic activity and the immunoglobulin level in the peripheral blood were assessed with immunological and spectrophotometric methods in 78 patients with ovarian cancer aged 65–70 years. The control group comprised 42 women of the same age with no ovarian cancer. The primary importance of circulating immune complexes and the indices of neutrophil activity and the inhibition of phagocyte migration was established for laboratory diagnostics of ovarian cancer among elderly people. The use of highly informative parameters of systemic immunity may enhance the diagnostics of ovarian cancer in the elderly. © 2020, Pleiades Publishing, Ltd

Information value of ante- And intranatal risk factors for bronchopulmonary dysplasia in preterm newborns [Информативность анте- и интранатальных факторов риска развития бронхолегочной дисплазии у недоношенных новорожденных]

Aim of the study. To identify the leading antenatal and intranatal risk factors for bronchopulmonary dysplasia based on the analysis of their prevalence and information content Materials and methods. We performed a prospective follow-up of 124 infants of gestational age of less than 32 weeks with the classical form of bronchopulmonary dysplasia (study group). The control group included 119 newborns with gestational age of less than 32 weeks without bronchopulmonary dysplasia. The parents of the compared groups were questioned, with the following assessment of the prevalence and informative value of antenatal and intranatal risk factors. Results. The leading antenatal and intranatal risk factors for the development of bronchopulmonary dysplasia are: acute respiratory viral infection in II-III trimester, threatened miscarriage, intrauterine growth retardation, Apgar score at the 1st (3 or less) and 5th minute (5 or less), body weight of less than 1400g at birth, body length less than 36 cm at birth, cesarean section, more then 6-hours waterless period. Conclusion. The combination of these intranatal and antenatal risk factors can be attributed to a group with high risk of bronchopulmonary dysplasia. © 2019 National Academy of Pediatric Science and Innovation. All rights reserved