28 research outputs found
Condition of pro-oxidant and antioxidant systems in guinea pigs' lungs under the condition of immobilization stress
No full textKryvko Yurij, Soguiko Yurij, Hot Iryna, Antonenko Yuliia, Baida Mariana, Kovalska Marta. Condition of pro-oxidant and antioxidant systems in guinea pigs’ lungs under the condition of immobilization stress. Journal of Education, Health and Sport. 2021;11(05): 319-324. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2021.11.05.033
https://apcz.umk.pl/czasopisma/index.php/JEHS/article/view/JEHS.2021.11.05.033
https://zenodo.org/record/5559664
The journal has had 5 points in Ministry of Science and Higher Education parametric evaluation. § 8. 2) and § 12. 1. 2) 22.02.2019.
© The Authors 2021;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
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The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 15.05.2021. Revised: 21.05.2021. Accepted: 28.05.2021.
UDC: 616.24-002-008.6-056.3-092: 612.24.015.11
сondition of pro-oxidant and antioxidant systems in guinea pigs’ lungs under the condition of immobilization stress
Yurij Kryvko1, Yurij Soguiko1, Iryna Hot¹, Yuliia Antonenko¹, Mariana Baida,
Marta Kovalska
Danylo Halytsky Lviv National Medical University, Lviv
1Andrei Krupynskyi Lviv Medical Academy, Lviv
[email protected]
Abstract
We have investigated the results of alterations in indices of pro-oxidant (conjugated diene and malondialdehyde) and antioxidant (superoxide dismutase, ceruloplasmin, catalase) systems in guinea pigs’ lungs under the conditions of immobilization stress. The experiment was conducted on 40 female guinea pigs weighing 0.18-0.20 kg. The animals were divided into 4 groups, each contained 10 guinea pigs: I – intact guinea pigs (control), II–guinea pigs with model of IS on1st day of experiment;Ш–animals on 2nd day of experiment;IV- group of animals on 34th day of experimental model of IS.
The results of our experimental work showed a significant accumulation of lipid peroxidation products in the lung`s tissure in different periods (on 1st, 2nd and 34th days) of immobilization stress. The state of antioxidant defence was characterized by moderate decrease of inzymes activity (superoxide dismutase, catalase and ceruloplasmin). disorders of balance between pro-oxidant and antioxidant systems couse oxidative stress development.
Key words: immobilization stress; peroxide lipid oxidation; antioxidant system
Genre and Stylistic Features of Epistolary Dialogue of Yurij Shevelev – Oksana Zabuzhko
No full textУ статті розглянуто епістолярний діалог Ю. Шевельова – О. Забужко як сукупність парних текстів – документів писемного спілкування суб’єктів, що в підсумку складають цілісний текст, набувають жанрово-стильової визначеності та завершеності, зафіксованої у книжковому виданні. Авторська постать у такому діа-лозі проявляється завдяки стильовій домінанті, адже специфіка епістилю спрямована на те, щоб максимально об’єктивно розкрити особу автора та адресата. Епістолярні тексти О. Забужко – Ю. Шевельова – це стилізована літературна форма спілкування, перенесена у площину листа. The article deals with epistolary dialogue of Yurij Shevelev – Oksana Zabuzhko as a set of paired texts written communication – subjects of documents that in resulting constitute integral text, obtain genre and stylistic definition and completeness fixed in book publishing. The author’s component in such a dialogue is manifested trough stylistic unit, specificity of epistyle aims to reveal the author and the addressee more objectively. Epistolary texts of O. Zabuzhko – Y. Shevelev – stylized literary form of communication carried over into the sphere of writing. These epistolary messages have confirmed existence and development in Ukrainian literature a new genre – the epistolary dialogue. Edition of the epistolary texts of famous Ukrainians from the position of pair perspective demonstrate poetic, motives, style, dialogues problem
Detection of Low Velocity Space Debris and Micrometeoroid Impacts: An Experimental Investigation
No full textSpace debris and micrometeoroids are abundant around our home planet and offer both an opportunity of research for scientists and a threat to human’s endeavours in space. Impacts with even the smallest particles can happen at such high velocities that they can damage or destroy an operational spacecraft, creating even more debris and possibly endangering its crew, if manned. Detecting and cataloguing the debris and micrometeoroid population has thus been a priority for many space agencies around the world to ensure safe space access. Unfortunately, small debris in high orbits cannot be detected by ground based observatories that can detect objects with a minimum diameter of 10 cm in LEO and 1m in GEO. This is why space based detectors are needed. Current detectors are small in size and can often detect only high velocity impacts due to relying on ionisation of particles upon impact. This MSc thesis investigated the possibility of using the whole spacecraft as a detector, by employing vibration sensors on its structure to detect impact-induced oscillations. These vibrations could contain information on the impactor’s mass, speed, material class and other features. Impacts of pieces of debris were simulated in a laboratory environment and the vibrations generated in a spacecraft-like structure were measured and processed to study the effectiveness of such a detection method. Three types of projectiles were used, beads of glass (3mm diameter, 0.04g average mass), teflon (3.2 mm average diameter and 0.033g average mass) and steel (3 mm average diameter and 0.11 g average mass). As target, to represent a spacecraft, a 3mm thick aluminium panel, a 5 mm thick aluminium- skin aluminium-honeycomb sandwich panel and a flight spare model of a solar array were used. An impact-location estimation algorithm was developed that can successfully determine the point of impact based on the signal of at least 4 sensors with centimetre accuracy. Analysis of the waveforms acquired by the sensors showed that deformation phenomena upon impact affect the frequency content of the signal, showing that to preserve as much as possible the high frequency content of the signal stiffer parts of a satellite are more indicated for this type of technology. Lastly, it was observed that the maximum voltage measured grows linearly with the momentum of the particles, making it possible to estimate the impact momentum solely based on the signal acquired. The dependence of voltage from the impact momentum together with the experimentally calculated coefficient of vibration dissipation of -0.05 cm^(−1) was used to determine the maximum distance of sensors from the point of impact as a function of particle speed and mass for successful detection of the impact. Particles as light as 0.03 g (the lightest used in the experiments) travelling at speeds as low as 15 m/s are expected to be detectable from sensors as far as 50cm, while for objects of 0.2 g travelling at speeds exceeding 200 m/s it is expected that a sensor can be as far as 1 meter away from the point of impact. The method, for its simplicity and low-cost provides an easy way to greatly increase the amount of data on small pieces of debris and micrometeoroid around our planet, enhancing space exploration safety and supporting future missions.Aerospace Engineerin
A semiotic interpretation of national typology: the English, the Boers and ... the Russians (Ivan Goncharov’s <i>Frigate Pallas</i>)
No full textThis article examines the text of renowned nineteenth century Russian travellers notes, The Frigate Pallada, by Ivan Goncharov, the author of Oblomov. Using the teachings of Victor Shklovsky, Yurij Tynianov and Yurij Lotman on the role of the genre of travellers notes in the history of Russian literature, the author examines the chapter on the Cape Province. She demonstrates that in his descriptions of the two nations of the Cape Province - the English and the Boers - Goncharov is applying that which is known to him - his own cultural model of the Russian society of the mid-nineteenth century. In his examination of differences between the English and the Boers Goncharov applies the ideological dichotomy between the Slavophiles and the Westernisers. Goncharov, by "inverting" the "dual model of Russian culture" (Lotman & Uspensky, 1984a) draws comparisons between the Russians of the Oblomov Slavophile type on the one hand, and the English on the other hand as the model for the improvement of the industry of the economically backward Russian nation. To Goncharov the Boers resemble the Oblomov, old world side of dichotomy, which by inversions of the dual model can fluctuate between "the good" and "the bad" categories
LE ALI DEL TERRORE: TRADUZIONE E COMMENTO DELL’OPERA DI MAMLEEV
No full textLa tesi verte sulla traduzione e sul commento di una delle opere principali dell'autore novecentesco Jurij Mamleev: Le Ali del Terrore. La prima parte della tesi introduce l'autore, il suo pensiero e le opere, riassumendo il contenuto dell'opera che si intende tradurre. La seconda e la terza parte della tesi si concentra sulla proposta di traduzione e sul commento alla traduzione con una breve analisi delle problematiche riscontrate durante la traduzione del testo.
The thesis focuses on the translation and commentary of one of the main works of the twentieth-century author Yurij Mamleev: The Wings of Terror. The first part of the thesis introduces the author, his thoughts and works, summarizing the content of the work that he intends to translate. The second and third part of the thesis focuses on the translation proposal its commentary with a brief analysis of the problems encountered during the translation of the text
Superfast coagulation and superstabilization of the titanium oxide dispersions over the carboxylic acids and titanium ions (IV+)
No full textBobyrenko Yurij Yakovlevich - Cand.Sc. (Chemistry), Associate Professor, Senior Research Scientist, Chemistry and Methods of Teaching Chemistry Department, Chelyabinsk State Pedagogical University.
Бобыренко Юрий Яковлевич - кандидат химических наук, доцент, старший научный сотрудник, кафедра химии и методики преподавания химии, Челябинский государственный педагогический университет.
e-mail: [email protected]Методом поточной ультрамикроскопии показано замедляющее действие оксикарбоновых кислот на коагуляцию дисперсий оксида титана в концентрированном растворе хлорида натрия. Установлено, что высокая стабилизация соседствует со сверхбыстрой коагуляцией коллоидов. Предложена
идея теоретического обоснования последнего явления как броуновского движения, усиленного химическими процессами на поверхности коллоидных
частиц.Using the flow ultramicroscope method the author shows retarding effect of the hydroxycarboxylic acids on dispersion coagulation of the titanium oxide in the strong solution of sodium chlorine. They established that the high stability goes together with the superfast colloid coagulation. The author offers a theoretical justification of this phenomenon as Brownian movement, intensified by the chemical reactions on the afloat of the colloidal particles.Челябинский государственный педагогический университе
Demographic Approach in Measuring Human Capital of Kazakhstan
No full textDemographic approach in measuring human capital of Kazakhstan Abstract This work is intended to provide reader with information about the value of human capital stock in Kazakhstan using well-known so-called education-based and lifetime labor income-based approaches. Author tries to research the reproduction model of human capital in conjunction with institutional factors in transition, such as socio-demographic, political and economic changes, historical development and the current level of human capital in KazakhstanThe main goal of this study is determination of main components of human capital development in Kazakhstan, especially from demographic viewpoint through the evaluations of modern reproduction of human capital in Kazakhstan. The results of estimations indicate that the human capital stock has significantly increased in Kazakhstan during the period studied (from 2003 to 2008) and that it surpass the value of physical capital in the country. The potential of human capital augmentation has been estimated as favorable for upcoming years in Kazakhstan. Key words: human capital, population quality, Kazakhstan, demography, working age-population, education
Optical Properties of Nanostructure Formed on a Surface of CdZnTe Crystal by Laser Radiation
No full textSelf-organizing structures of nanometer size are observed on the surface of CdZnTe crystal irradiated by strongly absorbed Nd:YAG laser radiation (LR) at intensities within 4 - 12 MW/cm2. The effect of exciton quantum confinement manifested by a shift to higher energies of the A0,X exciton band of the photoluminescent spectrum is present in structures of 10 – 15 nm in diameter at the top of nano-hills. A graded band gap structure with optical window is formed at the top of nano-hills
City-states in medieval Russia and the Great Russian state system
No full textThe article provides an insight into the author’s view on the rise and development of the state institutions
in Rus-Great Russia. According to the author, extant sources and historiographic heritage make it
possible to draw a conclusion regarding the zemskoe (communal) origin of the medieval Russian state
system. Thus, the united Russian state emerged as a communal-autocratic state. Without idealizing
relations between the grand prince, the nobility, the bureaucracy and the communal institutions, we
must acknowledge that there was a certain balance and in some cases — prevalence of the traditional
communal way of life. For the first time in the history of Russian civilization the turn of the 16th
century witnessed the rise of a united Russian state, which embodied principles of autocracy and a
communal way of life, namely a state, which was both communal and autocratic in its form and nature.
Refs 53
The first pension systems of the Russian Empire
No full textБокарев Юрий Павлович, доктор исторических наук, профессор, главный научный сотрудник и заведующий сектором экономической истории, Институт экономики Российская Академия наук (Москва, Россия). E-mail: [email protected]
Yu. P. Bokarev, [email protected]
Institute of Economics Russian Academy of Sciences, Moscow, Russian FederationВ статье рассматривается история российской пенсионной системы с момента ее отделения от благотворительной и прочих видов социальной деятельности до появления пенсионных уставов конца XIX — начала XX века. Анализируется поступательное расширение состава граждан, охваченных этой системой социальной защиты от морских офицеров и членов их семей до служащих государственных ведомств с попытками охвата лиц гражданских профессий (священнослужителей, ученых, учителей, художников, служащих некоторых частных
предприятий и др.) Наряду с пенсиями, выплачиваемыми из государственного бюджета, предпринимались попытки создания пенсий на основе эмеритальных касс. Автор не согласен с исследователями, считающими, что пенсия в дореволюционной России носила исключительно сословный характер. The article deals with the history of the Russian pension system from the moment of its separation
from charitable and other social activities until the retirement statutes of the late XIX — early XX century. The article analyzes the progressive expansion of the number of citizens covered by this system of social protection from naval officers and their families to employees of state agencies with attempts to cover people of civil professions (clerics, scientists, teachers, artists, employees of some private enterprises, etc.). Along with pensions paid from the state budget, attempts were made to create pensions on the basis of emerital cash desks. The author does not agree with researchers
who believe that the pension in pre-revolutionary Russia was of exclusively class character
