The in-process control of PVC sheath of a double core cable

In this work the possibility of the sheath hermiticity testing by measuring of the cable capacity per unit length variation during spark testing is considered. The research object is 2•0.75 HO3VVH2-F cable. According to the physical modelling it is proved that such defect of sheath as pinhole through the whole thickness of sheath can be registered for the test length 10 cm with test voltage frequencies 1kHz and 10kHz

How to Evaluate Students’ Entrepreneurial Projects? International Experience and Recommendations for Application in Russia

Quality assessment of entrepreneurship education and its’ results is an important problem in higher education. The task becomes even more relevant with the necessity of technological modernization in times of economic crisis. In particular, it is necessary to develop a system of criteria that would not only serve educational purposes, but also simulate the emerging of new market enterprises, which remains problematic so far now, despite the active measures from the government to support student initiatives. The lack of attention towards contemporary international ratings in the field of startup evaluation appears to be a significant limitation. Analysis of the related field will help with defining the criteria for entrepreneurial project assessment. The present paper aims to fill this gap. As a result, suggestions for projects’ evaluation were developed that include both financial and non-financial criteria, applicable to the student initiatives, and taking into account their specifics

Shelf Life Improvement of SERS-Active Substrates Based on Copper and Porous Aluminum Oxide

Copper nanostructures demonstrating an activity in the surface-enhanced Raman scattering (SERS) spectroscopy were formed via electrochemical deposition of copper on porous aluminum oxide (PAO) and protected from oxidation by surface coverage with polyethylene glycol (PEG) and silver. The SERS measurements of 10−6−6-M 4-mercaptophenylboronic acid (MPBA) molecules adsorbed on fresh Cu-coated samples, Cu–PEG and Cu–PEG–Ag nanocomposites after 5, 10, 15, 60, 180 and 300min of storage in air indicated the effectiveness of the proposed approach in protection from oxidation

Opportunities for improving personnel situation assessment in community pediatric services: a retrospective analytical descriptive study

Background. The variety of current methods for assessing the healthcare personnel resources remains insufficient to completely evaluate the actual staffing and needs of certain medical institutions. Using a combination of different sources of data enables a more comprehensive picture of the healthcare personnel situation to be obtained. Objective. To identify the potential for improving approaches to assessment of the personnel situation in community pediatric services at the regional level. Methods. The present study involved data from Krasnodar Krai, Astrakhan and Volgograd Oblasts: Federal Statistical Monitoring form No. 30 “Information on Medical Organization” for 2007–2022, as well as depersonalized data from the regional registers of medical workers and assigned population of Krasnodar Krai as of 01.01.2023. The methodology involved statistical and analytical methods. The study estimated the following parameters: community pediatric staffing in relation to? the child population, the staffing level of pediatric full-time positions, the rate of part-time jobs, and the average number of children per pediatrician. Results. The study justified the possibility of using additional sources of data to evaluate the personnel situation in local, municipal or regional healthcare institutions. The authors suggested an interactive analytical board for graphical visualization of the current state of healthcare human resources. Conclusion. The introduction of additional sources of information and monitoring in the healthcare human resources policy encourages a systematic comprehensive approach to estimating the staffing requirements

Radial-piston pump for drive of test machines

The article reviews the development of radial-piston pump with phase control and alternating-flow mode for seismic-testing platforms and other test machines. The prospects for use of the developed device are proved. It is noted that the method of frequency modulation with the detection of the natural frequencies is easily realized by using the radial-piston pump. The prospects of further research are given proof

The fate of the scientist as a reflection of the epoch: in memory of the first rector of the Kuban State Medical University Nikolai F. Melnikov-Razvedenkov

The paper analyzes the life and professional journey of Nikolai F. Melnikov-Razvedenkov, an outstanding scientist, doctor, and professor, as a reflection of Russian history from the end of the 19th century till the first quarter of the 20th century. The study identifies the role of Nikolai F. Melnikov-Razvedenkov in the development of medical science and the establishment of medical education in the Kuban region. The analysis was conducted with the involvement of archival records, personal correspondence, and scientific works of Nikolai F. Melnikov-Razvedenkov. To solve research problems, the authors used historical descriptive, comparative historical, problem-based chronological, biographical methods, and the method of monographic description. It is shown that the scientist’s fate mirrors the cultural and historical era experienced by the country. The authors define the exclusive role of Nikolai F. Melnikov-Razvedenkov in the establishment of the Kuban Medical Institute. His life path helped reveal the inviolability of medical ethics based on mercy, dedication to the profession, and willingness to serve people. Even in the situation of social upheaval Nikolai F. Melnikov-Razvedenkov found the meaning of his life in scientific work and helping people. His example will allow the modern generation of doctors to gain a greater understanding of the essential purpose of their work

Development of functional purpose snacks

The article provides information on the development of new functional snacks based on local traditional and non-traditional raw materials. The uniqueness of the composition of snacks is associated with the presence in the recipe of dry mare's and camel's milk, as well as fruit and vegetable purees, dry strains of lacto and bifidobacteria, fucoidan and other food ingredients with increased nutritional and biological value. Evaluation of the chemical composition of the nutritional and biological value of snacks indicates their targeted antioxidant, detoxifying and immunostimulating properties. Functional snacks are recommended for use by the general public, including climbers, pilots of civil and military aviation, athletes, as well as in emergencies and conditions that adversely affect human health

Carrier transport in porous-SiNic-Si nanostructures

In the present paper we have studied the peculiarities of carrier transport properties of nanoheterostructures containing silicon substrate covered with porous silicon layer, where pores were either filled or non-filled with ferromagnetic Ni clusters.We have carried out DC conductivity experiments as a function of temperature (ranging from 2 to 300 K) and porosity of porous silicon layer (between 30% and 70%). Presence of a surface layer with high resistance on the porous silicon top and its role in nanoheterostructure formation was revealed. It was shown that specific electrochemical kinetics of Ni deposition into porous silicon significantly influences resultant nanostructure resistance and high temperature conductance activation energy

ФОРМИРОВАНИЕ МАССИВОВ НАНОСТРУКТУР ИЗ ЛЕГИРОВАННОГО И НЕЛЕГИРОВАННОГО ОКСИДА ЦИНКА МЕТОДАМИ ОСАЖДЕНИЯ ИЗ ЖИДКОЙ ФАЗЫ

The results of study of electrochemical and hydrothermal deposition of doped and undoped zinc oxide nanostructure arrays in liquid phase are presented in the article. The values of parameters of electrochemical deposition process at which formation of erbium doped zinc oxide nanostructures arrays occurs are determined. The influence of parameters of hydrothermal deposition process on structural properties of undoped zinc oxide is investigated. Obtained arrays of doped and undoped zinc oxide nanostructures deposited by hydrothermal and electrochemical methods can be used in photovoltaic and optoelectronic applications.Проведены исследования процессов формирования массивов легированных и нелегированных наноструктур из оксида цинка методами электрохимического и химического осаждения из жидкой фазы. Определены параметры процесса электрохимического осаждения, при которых происходит формирование массивов наноструктур оксида цинка, легированного эрбием. Изучено влияние параметров процесса химического гидротермального осаждения на структурные свойства массивов нанокристаллов нелегированного оксида цинка. Получены массивы наноструктур легированного и нелегированного оксида цинка, сформированных гидротермальным и электрохимическим методами, которые могут быть использованы в качестве функциональных слоев в фотовольтаических и оптоэлектронных приборах