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Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 420
Author(s):  
Anna Yakovleva ◽  
Margarita Isaenkova ◽  
Roman Minushkin

The purpose of this research was to analyze the change in residual stresses in the surface layer of steel samples taking into account the technological heredity effect on the value and sign of residual stresses. An installation of combined processing was developed. Combined processing consists of sequentially performing electromechanical processing and diamond smoothing. All areas of the samples were studied—after machining (i.e., in the initial state), after electromechanical processing, and after diamond smoothing. The research shows that the sign and value of residual stresses are significantly affected by the combined processing modes. The main parameters of the surface layer are formed at the final stage of the combined processing–diamond smoothing. This paper gives recommendations on the use of combined processing for power plant parts.


Author(s):  
A. Smekalova ◽  
O. Mityashova ◽  
O. Aleinikova ◽  
E. Montvila ◽  
I. Lebedeva

Somatotropic hormone (STH) is an important positive modulator of ovarian function in mammals. Local production of STH and the expression of the corresponding specific receptors were also detected in hen ovarian follicles, which indicates the participation of this hormone in the endocrine/paracrine control of folliculogenesis in birds. Nevertheless, the role of STH in the regulation of growth of avian follicles at the final stage of maturation is still not clear.Objective: To study in vitro the effect of STH on the proliferative activity and apoptotic changes of granulosa and theca cells from preovulatory follicles of domestic hens.Materials and methods. Young laying hens aged 34-35 weeks with a long clutch were used in the experiments. Granulosa and theca cells were isolated from the largest yellow follicle in the hierarchy (F1). The cells were cultured in a medium containing 10% fetal bovine serum until a monolayer was formed, and then for 24 h in the medium without serum in the absence (control) or in the presence of STH at various concentrations (1-100 ng/ml). The proliferative activity and apoptotic changes in the cells were assessed by immunocytochemical assay, based on the expression level of proliferating cell nuclear antigen PCNA and pro-apoptotic protein Bax, respectively.Results. The proportion of PCNA-positive granulosa cells increased 1.3-1.8 times (P<0.01-0.05) as compared to control with increasing the content of STH in the medium to 10-100 ng/ml. Furthermore, within this concentration range, the studied hormone reduced 1.2-1.6 times (P<0.05) the relative number of granulosa cells with the positive reaction to Bax. The sensitivity of theca cells to the growth-stimulating effect of STH was lower than that of granulosa cells. Such the effect of STH led to an increase in the proportion of PCNA-positive thecal cells by 1.2-1.3 times (P<0.05) and was detected only at concentrations of 25 and 100 ng/ml. Meanwhile, STH (25-100 ng/ml) increased 1.3 times (P<0.05) the level of Bax expression in theca cells.Conclusions. The results of the present study indicate the stimulating effect of STH in vitro on the proliferative activity of granulosa and theca cells from the most mature hen preovulatory follicle. In addition, STH is able to reduce the expression of the pro-apoptotic protein Bax in granulosa cells and increase this expression in thecal cells. Thus, the data obtained indicate the possible participation of STH in the regulation of growth and development of follicles at the final stage of maturation during the period of maximum egg-laying intensity in laying hens.


2022 ◽  
Vol 6 ◽  
Author(s):  
Gitumoni Konwar ◽  
Sweetimani Kakati ◽  
Nabanita Sarma

The outbreak of SARS-COV-2 has become an opportunity for nursing professionals of North Eastern states of India to experience handling patients during pandemics with limited resources. To explore the experiences of nursing staff in the care of COVID-19 patients. Descriptive phenomenological design was adopted to describe the experiences of nursing professionals involved in the care of COVID-19 patients in selected hospitals/COVID centers of Assam, India. The experiences of nurses caring for COVID-19 patients were summarized into 4 themes and various sub-themes. The themes include: Perspectives about COVID-19 duty, Experience on PPE kit, Conflicts & disagreements and Swab test & the final stage of isolation. Nurses reported changing patterns of nursing care, anxiety regarding COVID-19 duty, professional growth amidst risks and pressure. The nurses had to work under certain conflicts and disagreements in relation to patient care, their personal and career related decisions and interprofessional role distribution. At the final stage of isolation, most nurses were prepared to handle the situation even if they test COVID-19 positive. During this COVID-19 outbreak, positive and negative emotions of the front-line nurses interweaved and coexisted. The experience was new and challenging, the nurses had contributed in the management of COVID-19.


MAUSAM ◽  
2022 ◽  
Vol 45 (1) ◽  
pp. 63-68
Author(s):  
L. S. RATHORE ◽  
G. SRINIVASAN ◽  
K. K. SINGH

goil-Plant -Atmosph erc-Watcr (S PAW) model has been applied 10 sim ula te soil-moistureprofiles for .... hea l in Delhi. Prescr ibed Inrorrnation on wheat growt h characteristics and soils alongwit h dailymeteorological data on evaporation an d rainfall were used to estima te soil- moi sture 31 a locat ion in Delhi for I Iyear s. Soil moisture simulations from model runs of consecu tive f,."T"0P seasons from 1979-80 10 1989-90 were infa vourable agreement with the gravimetrically measured obse rved dat a. Comparisons were also made for themo del gene rat ed eva pot ra nspi rat ion values. Ccrrcla tionv between observed a nd simu la ted soil-moisture in tho:different layers ra nged from 0 .7 to 0.85 for the tl -year period . Similarl y. integrated co lumn moisture amountsduring d iffe rent stage; of the crop also sho wed sign ificant cor rela tio ns ra nging from 0 .4 to 0 .8 . The model exhibitsa tendency to syste-n nicall v over estimate soil-moist ure du ring the final stage s of crop. possibly due I,)im perfections in in put . model a rt ifacts an~ observationa l ina deq uaci es. H ONe..-er-. the overall ability of the modelto rep roduce obser ved changes m soil-moisture for activ ely growing wheat crop In Indian con ditions, underlinesito; uti lity.


2022 ◽  
Vol 1215 (1) ◽  
pp. 012011
Author(s):  
I A Iznairov ◽  
M V Efremov ◽  
M A Barulina

Abstract Optimization of the suspension of the micromechanical accelerometer, which is a part of an angular velocity measurement unit, was considered. This problem was faced because of the need to improve the design of the existing device to meet new technical requirements. Shock loads up to 1 000 g exceed ultimate loads for micromechanical accelerometers by several orders of magnitude. During the study, it turned out that the measurement unit shell works as a resonator, so the shock loads on the micromechanical accelerometer can even exceed 1 000g. In this case, suspensions of the micromechanical accelerometer are deformed in the plane of the accelerometer, which causes their destruction. The solution to this problem was hampered by the strict limits on the overall dimensions of the device. The existing shock dampers that could absorb such shock loads simply did not fit into the attachment points. Therefore, an original spring was designed and manufactured for this purpose. At the final stage, an additional system of passive heat outlets from the accelerometer to the device shell was designed and installed.


Author(s):  
Syuaib Syuaib ◽  
M. Taufan B. ◽  
Ermawati Ermawati

This study discusses the duties and functions of court bailiff in the settlement of marriage properties or  gono gini in the religion court.   This study used qualitative method which the data were collected through direct observation and interviews with the religious court staff and judges. The findings show that  the tasks and roles of the bailiff at the religious court in solving the marriage properties. They play  an important role in carrying out the execution of the marriage properties ot gono gini ssets. In the process of confiscation of the marriage properties, the confiscator is an important component in the final stage of the settlement of a case. The steps or stages of the process of carrying out the confiscation of the bailiffs are waiting for the verdict issued by the head of the judges in the settlement of marriage properties. Importance prospects of thought to the question of duty and fun g of the bailiff to the people as possible with their special studies were made of the court to the public.


2021 ◽  
Vol 34 (06) ◽  
pp. 1740-1750
Author(s):  
Valery A. Chejmatova ◽  
Yuriy V. Vaganov

The article introduces the problems of choosing a methodological base for forming and accounting costs during well construction, taking into account the intensification of gas inflow at the final stage of field development. The main methods that allow taking into account the costs of drilling operations are outlined. The main costs that need to be taken into account when designing fields with hard-to-recover gas reserves are identified and characterized. The main stages of cost formation by construction phases of a gas-producing well are shown, as well as the factors influencing the level and structure of the cost price during the construction of a well are highlighted. The authors consider the classification of cost accounting methods in the context of the comparison criterion and present the possible results of the correct choice of the cost formation method during the construction of a gas well at the final stage of its development.


Author(s):  
Ikha Nadia Lilfitri ◽  
Dewi Candra Ciptosari ◽  
Widya Nur Aisa ◽  
Ratih Puspita Dewi

This article is the result of community service activities. The purpose of this activity is to disseminate information about Covid-19 to children in Talang Hamlet. This socialization activity was carried out online with the Google Meet application with 19 children as participants from elementary to high school levels. The technique of delivering socialization uses the lecture method with PowerPoint media. This activity increased the knowledge of children in Talang Hamlet about the Covid-19 pandemic, especially about the dangers of Covid-19, prevention of Covid-19, and the application of health protocols during the Covid-19 pandemic. At the final stage of the activity, assistance was provided in necessities and hand sanitizer to local hamlet residents. This activity concluded that COVID-19 socialization activities for children could increase their knowledge about Covid-19.AbstrakArtikel ini merupakan hasil kegiatan pengabdian kepada masyarakat. Tujuan dari kegiatan ini adalah untuk menyebarluaskan informasi tentang Covid-19 kepada anak-anak di Dusun Talang. Kegiatan sosialisasi ini dilakukan secara online dengan aplikasi Google Meet dengan peserta 19 anak dari tingkat SD hingga SMA. Teknik penyampaian sosialisasi menggunakan metode ceramah dengan media PowerPoint. Kegiatan ini menambah pengetahuan anak-anak di Dusun Talang tentang pandemi Covid-19 khususnya tentang bahaya Covid-19, pencegahan Covid-19, dan penerapan protokol kesehatan selama pandemi Covid-19. Di akhir kegiatan, diberikan bantuan sembako dan hand sanitizer kepada warga dusun setempat. Kegiatan ini menyimpulkan bahwa kegiatan sosialisasi COVID-19 kepada anak-anak dapat menambah pengetahuan mereka tentang Covid-19.


Author(s):  
Borys Magomedov

The aim of the study is to explain the unusually high for provincial city percentage of Roman denarii among the coins of ancient Olbia. Research methodology – principles of science, historicism, objectivity, generalization, historical-genetic and historical-typological. Scientific novelty. Some researchers of Olbia connected the final stage of its history with presence of barbarians, carriers of the Chernyakhiv culture (the second third of 3rd – the beginning of 5th c., the dominant population – the Goths). Other researchers believed that the material culture of the city retains its ancient character to the end. Modern analysis of finds from the late Roman layers of Olbia and its surroundings demonstrates undeniable Chernyakhiv analogies and shows the inclusion of the city in political and economic system of barbarians. The truth of this statement can be verified by comparing the numismatic materials of Chernyakhiv culture and Olbia of Roman times. In the area of this culture within the borders of former USSR, finds of more than 26 thousand Roman coins have been recorded. Coins modern to this culture (3rd – 4th c.) are a minority, and 78,7% are represented by earlier silver denarii of the 1st – 2nd c. The barbarians received these denarii from Rome as military contributions and subsidies or wage to military units. Some coins were put into circulation for internal payments. P. Karyshkovsky made statistical calculations of coins of the 1st – 4th c. from Olbia and found some local peculiarity. Unlike other ancient cities of Northern and Western Black Sea coast, among the Roman and provincial coins found in Olbia, the majority are denarii of the 1st – 2nd c.: 53,5% of finds. However, in Histria city (Western Black Sea Coast) denarii make only 17,3%. The peculiarity of Olbia collection can be explained by the history of this city. After the Gothic conquest (between the late 250s and early 270s), Olbia was reborn as small fortified town, a trade and craft center inhabited by Goth barbarians. The distribution of coin finds from the second half of 3rd to the beginning of 5th c. corresponds to the situation in Chernyakhiv culture. Issues of coins of that time came to its population in small quantities. However, the barbarians owned a large mass of old denarii of 1st – 2nd c. Some of them fall into the cultural layer of Olbia, which creates a false picture of money circulation of the city in early Roman times. The percentage of such denarii in Olbia without the participation of the later “Chernyakhiv” addition should be close to the percentage of denarii in Histria (17,3%). Conclusions. A feature of the money circulation of Olbia in Roman times is relatively large number of finds of denarii of the 1st – 2nd c. This can be explained by the fact that in the third quarter of 3rd c. the city was included into political and economic system of Chernyakhiv culture, where the main currency was the silver denarii of the 1st – 2nd c., which by that time were out of circulation in the Empire. The Olbia collection of Roman coins should be divided into the “Ancient” and “Chernyakhiv” (or “Late Antique”) periods, and the latter, in addition to coins of the second half of 3rd – 4th c., contains most of the denarii of the 1st – 2nd c.


2021 ◽  
pp. 96-110
Author(s):  
Леонид Александрович Поморцев

Предлагаемая работа нацелена на искоренение недостатков Последовательностей Вывода ({\bf ПВ}), присущих программам вычислительных машин. Постановка задачи и предшествующие исследования {\bf ПВ} составляют содержание работ [10-12]. На завершающем этапе статьи {\bf ПВ} заменяются Функционально-Эквивалентными ({\bf ФЭ}) им алгебраическими выражениями, на входе в которые имеют место те же Функциональные Зависимости ({\bf ФЗ}), что и в исходных {\bf ПВ}. Результат работы, соответствующий её целям, содержится в Теореме 3. The offered work is aimed at eradication of shortcomings of the Sequences of the Derivation ({\bf SD}) inherent in programs of computers. The establish of the problem and the previous researches {\bf SD} make the content of works [10-12]. At the final stage of this article {\bf SD} are replaced with algebraic expressions wich is Functionally Equivalent ({\bf FE}) to them on which entrance the same Functional Dependences ({\bf FD}), as in initial {\bf SD}. The result of work answering her purpose contains in the Theorem 3.


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