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Tytuł:
On some Properties of Quasi MV Algebras and $\sqrt\prime$ quasi-MV Algebras. Part III.
Autorzy:
Kowalski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/1368539.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Opis:
In the present paper, which is a sequel to [14] and [3], we investigate further the structure theory of quasi-MV algebras and $\sqrt'$ quasi-MV algebras. In particular: we provide an improved version of the subdirect representation theorem for both varieties; we characterise the Ursini ideals of quasi-MV algebras; we establish a restricted version of Jónsson’s lemma, again for both varieties; we simplify the proof of standard completeness for the variety of $\sqrt'$ quasi-MV algebras; we show that this same variety has the finite embeddability property; finally, we investigate the structure of the lattice of subvarieties of $\sqrt'$ quasi-MV algebras.
Źródło:
Reports on Mathematical Logic; 2010, 45; 161-199
0137-2904
2084-2589
Pojawia się w:
Reports on Mathematical Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Framing Polish-Jewish Relations Through Shakespeare in Post-war and Contemporary Polish Theatre
Autorzy:
Kowalski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/39774053.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Polish-Jewish relations
Holocaust
antisemitism
Jerzy Grotowski
Krzysztof Warlikowski
'Hamlet' in Poland
'Hamlet Study'
'The Merchant of Venice' in Poland
Opis:
The paper aims to analyse how the staging of Shakespeare’s texts in post-war and contemporary Poland reflected the indifferent and hostile attitudes of Poles towards Jews, particularly during the Holocaust, and the distortions and gaps in the collective memory regarding the events. In the first part, the author focuses on Hamlet Study (dir. Jerzy Grotowski) performed in 1964 by Laboratory Theatre of 13 Rows in Opole, which is symptomatic of silencing the matter during the communist period. The second part draws from the statement of Jan Ciechowicz, a Polish theatre historian, who claimed that “the Holocaust killed Shylock for Polish stage.” While verifying it, the author analyses selected aspects of three productions directed by Krzysztof Warlikowski (The Tempest (2003), The Merchant of Venice (1994) and The African Tales by Shakespeare (2011)) and juxtaposes them against the background of the changes in collective memory. He argues that the most cogent productions concerning Polish attitudes towards Jews are those that position the audience as witnesses of the acts of re-enacted violence and thus provoke an affective response.
Źródło:
Multicultural Shakespeare: Translation, Appropriation and Performance; 2023, 28, 43; 193-207
2083-8530
2300-7605
Pojawia się w:
Multicultural Shakespeare: Translation, Appropriation and Performance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Structure and physical properties of Fe59Mn27Ni7Cr3Si4 shape memory alloy
Autorzy:
Lipiński, Piotr
Kowalik, Dawid
Kowalski, Tomasz
Królicki, Michał
Hasiak, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1189884.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
stopy z pamięcią kształtu
mikrostruktura
twardość
AFM
XRD
shape memory alloy
microstructure
hardness
Opis:
In this work the authors present the properties of the Fe59Mn27Ni7Cr3Si4 (at. %) shape memory alloy. Two different phases were discovered during the XRD analysis and Fe-Mn phase was identified. The hardness of the investigated material in the as-cast state was 194 HV. The nano hardness was 511 HV and Young modulus was determined as 159 GPa. AFM and LFM tests allowed to observe linear arrangement of one phase formed as multiple irregular separations. Shape memory effect was not observed in the temperature range 22 – 600oC.
Źródło:
Interdisciplinary Journal of Engineering Sciences; 2019, 7, 1; 10--16
2300-5874
Pojawia się w:
Interdisciplinary Journal of Engineering Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Terrestrial and extraterrestrial drillings in the 21st century. Research challenges and the way to satisfy them by means of a new research infrastructure at AGH-UST
Autorzy:
Kowalski, Tomasz
Skrzypaszek, Krzysztof
Teper, Wojciech
Toczek, Przemysław
Złotkowski, Albert
Powiązania:
https://bibliotekanauki.pl/articles/2052216.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
drillings
space drilling
lunar regolith
drilling test
data acquisition
data processing
real time condition
Opis:
Knowing the impact of technical solutions on the drilling process is a very important element in the process of the exploration of new fossil fuel deposits. Drilling equipment used during drilling operations is highly liable to all conditions which prevail in the well bore. The study of the impact of drilling fluid flow with various rheological properties on the strength and work of drill stem components will allow to search for the best solutions. The article describes the design and construction of two boreholes, fill up with 9 5/8" (244.5 mm) and 24" (609.6 mm) casings. The designed boreholes will be a joint part of the drilling laboratory in the S-1 building at AGH-UST in Krakow. Research The research described above can be done in openholes and implemented at the beginning of the design process for drilling works in new deposits. In addition, it will provide an opportunity for all engineers to get to know the behavior of components operating in an open hole.
Źródło:
AGH Drilling, Oil, Gas; 2020, 37, 3; 5-11
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Query Optimization by Indexing in the ODRA OODBMS
Autorzy:
M. Kowalski, Tomasz
Chromiak, Michał
Kuliberda, Kamil
Wiślicki, Jacek
Adamus, Radosław
Subieta, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/764347.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Źródło:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica; 2009, 9, 1
1732-1360
2083-3628
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska. Sectio AI, Informatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of physiotherapy on spinal alignment in children with postural defects
Autorzy:
Zmyślna, Anna
Kiebzak, Wojciech
Żurawski, Arkadiusz
Pogorzelska, Justyna
Kotela, Ireneusz
Kowalski, Tomasz J.
Śliwiński, Zbigniew
Śliwiński, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2161989.pdf
Data publikacji:
2019-02-27
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
postural defects
PNF
Vojta
DIERS
physiotherapy
rehabilitation
Opis:
Objectives This paper assesses the effect of neurophysiological rehabilitation in children with postural defects on the depth of thoracic kyphosis, lateral spinal deviation and rotation of spinal motor segments. Material and Methods A total of 201 patients aged 8–15 years old with a postural defect diagnosed by medical examination were enrolled. The analyzed parameters were determined using the DIERS system before the first therapeutic session and after 4 weeks of therapy. The angle of thoracic kyphosis, lateral deviation of the spine and spinal rotation were assessed. The therapy employed techniques associated with the proprioceptive neuromuscular facilitation (PNF) and Vojta’s approaches. The results were analyzed separately for both sexes and for patients rehabilitated solely with Vojta’s techniques vs. patients rehabilitated according to combined Vojta’s and PNF techniques. The χ² test was used for statistical analyses, at p < 0.05. Results There was improvement in the angle of thoracic kyphosis, ranging from 0.14 (among boys with kyphosis < 42°) to 5.47 (among girls with kyphosis ≥ 42°), spinal rotation, from 0.37 (among boys with kyphosis ≥ 42°) to 4.33 (among patients with kyphosis ≥ 42° rehabilitated solely according to Vojta’s method), and lateral deviations, ranging from 1.32 mm (among boys with kyphosis < 42°) to 2.99 mm (among patients with kyphosis ≥ 42° rehabilitated solely according to Vojta’s method). Conclusions Neurophysiological rehabilitation of patients with postural defects produced positive effects by improving the angle of thoracic kyphosis, spinal rotation and lateral deviation of the spine. Children with reduced thoracic kyphosis achieved less improvement in the kyphosis angle, lateral spinal deviation and spinal rotation than children with kyphosis ≥ 42°. The DIERS Formetric System enables precise monitoring of therapeutic outcomes. Int J Occup Med Environ Health. 2019;32(1):25–32
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2019, 32, 1; 25-32
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of the use of the McKenzie and Vojta methods to treat discopathy-associated syndromes in the pediatric population
Autorzy:
Żurawski, Arkadiusz
Kiebzak, Wojciech
Zmyślna, Anna
Pogożelska, Justyna
Kotela, Ireneusz
Kowalski, Tomasz J.
Śliwiński, Zbigniew
Śliwiński, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2161990.pdf
Data publikacji:
2019-02-27
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
DIERS
Vojta
McKenzie
lordosis
kyphosis
back pain
Opis:
Objectives This paper evaluates the efficacy of using the McKenzie and Vojta methods for patients with low back pain and the use of the DIERS Formetric 4D system as an objective diagnostic tool. Material and Methods The study enrolled 28 patients aged 15–17 years old. The patients were hospitalized at the Department of Orthopedics and Traumatology of the Świętokrzyskie Center for Pediatrics in Kielce with a diagnosis of back pain associated with a discopathy. The patients were rehabilitated according to the McKenzie and Vojta methods. Assessment by means of the DIERS Formetric system had taken place before the first therapy session and on the day that pain was eliminated to evaluate trunk inclination, angle of thoracic kyphosis, angle of lumbar lordosis, lateral deviation, trunk torsion, surface rotation and pelvic obliquity. Pain intensity and change in pain intensity over time were assessed by means of a numerical rating scale. Results Pain intensity was reduced to 0 over 3–12 days. The study participants demonstrated reduction in anterior trunk inclination of the mean value at 1.83°. The angle of thoracic kyphosis was also reduced by 7.95°. The angle of lordosis increased by 7.6°. The lateral spinal curvature was reduced by 8.92 mm. There was a reduction of 4.64° in trunk torsion. Surface rotation was reduced by 1.61° and pelvic obliquity was reduced by 3.78°. Conclusions In discopathic patients, postural parameters comprising trunk inclination, angle of thoracic kyphosis, angle of lumbar lordosis, lateral deviation, trunk torsion, vertebral rotation and pelvic obliquity fail to reach Hartzmann’s physiological reference ranges. A therapeutic intervention based on the Vojta and McKenzie methods may normalize the posture to physiological reference ranges and is effective in the treatment of patients with back pain. The DIERS system is an objective tool for tracing the effects of therapy in patients with back pain. Int J Occup Med Environ Health. 2019;32(1):33–41
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2019, 32, 1; 33-41
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Burnout among physiotherapists and length of service
Autorzy:
Śliwiński, Zbigniew
Starczyńska, Małgorzata
Kotela, Ireneusz
Kowalski, Tomasz
Kryś-Noszczyk, Karolina
Lietz-Kijak, Danuta
Kijak, Edward
Makara-Studzińska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/2179020.pdf
Data publikacji:
2015-04-14
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
stress
physiotherapy
burnout
length of service
determinants
fatigue
Opis:
Objectives: The aim of this study was to identify factors that contribute to the development of burnout among physiotherapists with different length of service in physiotherapy. Material and Methods: The following research tools were used to study burnout: the Life Satisfaction Questionnaire (LSQ), based on FLZ (Fragebogen zur Lebenszufriedenheit) by Frahrenberg, Myrtek, Schumacher, and Brähler; the Burnout Scale Inventory (BSI) by Steuden and Okła; and an ad hoc questionnaire to collect socio-demographic data. The survey was anonymous and voluntary and involved a group of 200 active physiotherapists working in Poland. Results: A statistical analysis revealed significant differences in overall life satisfaction between length-of-service groups (p = 0.03). Physiotherapists with more than 15 years of service reported greater satisfaction than those with less than 5 years and between 5 and 15 years of service. The results suggest that burnout in those with 5-15 years of service is higher in physiotherapists working in health care centers and increases with age and greater financial satisfaction, while it decreases with greater satisfaction with friend and family relations and greater satisfaction with one's work and profession. In those with more than 15 years of service, burnout increases in the case of working in a setting other than a health care or educational center and decreases with greater satisfaction with one's work and profession. Conclusions: Job satisfaction and a satisfying family life prevent burnout among physiotherapists with 5-15 years of service in the profession. Financial satisfaction, age and being employed in health care may cause burnout among physiotherapists with 5-15 years of service. Physiotherapists with more than 15 years of service experience more burnout if they work in a setting other than a health care or educational center and less burnout if they are satisfied with their profession.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2014, 27, 2; 224-235
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Life satisfaction and risk of burnout among men and women working as physiotherapists
Autorzy:
Śliwiński, Zbigniew
Starczyńska, Małgorzata
Kotela, Ireneusz
Kowalski, Tomasz
Kryś-Noszczyk, Karolina
Lietz-Kijak, Danuta
Kijak, Edward
Makara-Studzińska, Marta
Powiązania:
https://bibliotekanauki.pl/articles/2178848.pdf
Data publikacji:
2014-06-21
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
burnout
satisfaction
gender
physical therapy
Opis:
Objectives: Recently in Poland as a result of the high rate of aging population and high rates of morbidity, a growing demand for the physiotherapist profession is observed. The results of this study can be used to formulate principles for better organization of physiotherapist's workplace in order to prevent occurrence of burnout. The aim of this study is to investigate the effect of gender on satisfaction with life and burnout among active physiotherapists. Material and Methods: The survey was anonymous and voluntary, and involved a group of 200 active physiotherapists working in health care units and educational centers in Poland. The study group was selected randomly and incidentally. Each respondent received a demographic data sheet and a set of self-rating questionnaires (Life Satisfaction Questionnaire, Burnout Scale Inventory). Results: Burnout among men decreased along with increasing satisfaction with one's work and occupation, friends, relatives and acquaintances, sexuality, and increased due to greater satisfaction with one's housing status. Burnout among women decreased along with increasing satisfaction with one's health, free time and friends, relatives and acquaintances, and increased due to work at a setting other than a health care unit or educational center. Statistical analysis failed to reveal any significant differences with regard to the BSI domains and with regard to the overall burnout index as well as with regard to the assessment of satisfaction with life between female and male physiotherapists. Conclusions: Satisfaction with children, marriage and partnership, with one's work and occupation, interactions with friends, relatives and acquaintances and sexuality may contribute to reduction of burnout among men. Women who are satisfied with their children, family, health, free time and contacts with friends, relatives and acquaintances are less prone to burnout. Weak financial situation among women and deficiency of free time among men can induce burnout. Improving staff happiness may contribute to decreasing burnout.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2014, 27, 3; 400-412
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing materials used for 3D printing
Badania materiałów stosowanych do druku 3D
Autorzy:
Zahorski, Tomasz
Kowalski, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/38953896.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
3D printing
3D printing material
material strength
strength testing
druk 3D
materiał do druku 3D
wytrzymałość materiału
badanie materiałowe
Opis:
The paper addresses issues related to 3D printing in repairing military equipment. It quoted a short story on the invention of the 3D printer and the development of printing technology. The significance of knowledge of the materials employed in 3D printing is discussed in the further part. To this end, the authors reviewed selected strength-related tests (tensile strength, in particular), to determine their application possibilities. Test samples were prepared based on a Polish standard and the material provided by two manufacturers. The tests were conducted using a Zwick Roell Z100 machine. The obtained results were presented as graphs. The paper is concluded by a short summary and an indication of further research.
W artykule poruszono kwestię druku 3D w naprawie sprzętu wojskowego. Przytoczono krótką historię drukarki 3D oraz rozwoju technologii druku. W dalszej części omówiono znaczenie znajomości materiałów stosowanych w druku 3D. W tym celu przedstawiono wybrane badania wytrzymałościowe, głównie wytrzymałość na rozciąganie, w celu określenia możliwości ich zastosowania. Próbki do badań wykonano w oparciu o polską normę i materiał dostarczony przez dwóch producentów. Badania zrealizowano na maszynie Zwick Roell Z100. Otrzymane wyniki przedstawiono graficznie na wykresach. Na zakończenie dokonano krótkiego podsumowania oraz wskazano kierunki dalszych prac.
Źródło:
Journal of KONBiN; 2023, 53, 4; 223-234
1895-8281
2083-4608
Pojawia się w:
Journal of KONBiN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pipe organ evolution. From mechanical to mechatronical subsysystems
Ewolucja organów piszczałkowych. Od podsystemów mechanicznych do mechatronicznych
Autorzy:
Kądziołka, Tomasz
Kowalski, Sławomir
Mońko, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2130867.pdf
Data publikacji:
2021
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Nowym Sączu
Tematy:
pipe organs
windchest
registration of the instrument
organy piszczałkowe
wiatrownica
rejestracja instrumentu
Opis:
This document discusses the use of mechatronic solutions in pipe organs. This article is the first in a series, in which the authors present a historical view of pipe organs, as well as their development. It is also an explanation of new mechatronic solutions used in modern pipe instruments, ensuring the organist's intended sounds are delivered. The registration of the instrument, both before and after performance, is explored in terms of the usage of systems.
Praca przedstawia zastosowanie rozwiązań mechatronicznych w organach piszczałkowych. Jest to pierwszy artykuł z tego cyklu, w którym autorzy zaprezentowali rys historyczny organów piszczałkowych, a także ich rozwój. Podjęta została też próba opisania nowych rozwiązań mechatronicznych, stosowanych we współczesnych instrumentach piszczałkowych, które nadają im możliwość odpowiedniego, zgodnego z wolą organisty, wydawania dźwięku. Nie bez znaczenia pozostaje także aspekt rejestrowania instrumentu zarówno przed, jak i w trakcie wykonywania utworu. Autorzy postarali się udzielić odpowiedzi na pytanie zawarte w tytule niniejszej pracy.
Źródło:
Journal of Engineering, Energy and Informatics; 2021, 1; 29-42
2720-4162
2720-5541
Pojawia się w:
Journal of Engineering, Energy and Informatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A modified particle swarm optimization procedure for triggering fuzzy flip-flop neural networks
Autorzy:
Kowalski, Piotr A.
Słoczyński, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2055168.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fuzzy neural network
fuzzy flip-flop neuron
particle swarm optimization
training procedure
sieć neuronowa rozmyta
optymalizacja rojem cząstek
procedura szkoleniowa
Opis:
The aim of the presented study is to investigate the application of an optimization algorithm based on swarm intelligence to the configuration of a fuzzy flip-flop neural network. Research on solving this problem consists of the following stages. The first one is to analyze the impact of the basic internal parameters of the neural network and the particle swarm optimization (PSO) algorithm. Subsequently, some modifications to the PSO algorithm are investigated. Approximations of trigonometric functions are then adopted as the main task to be performed by the neural network. As a result of the numerical verification of the problem, a set of rules are developed that can be helpful in constructing a fuzzy flip-flop type neural network. The obtained results of the computations significantly simplify the structure of the neural network in relation to similar conditions known from the literature.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 4; 577--586
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How the analytical hierarchical process and revitalisation work together: A case study of Poland
Autorzy:
Rogatka, Krzysztof
Starczewski, Tomasz
Kowalski, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/15805136.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
city
urban regeneration
evaluation
multi-criteria analysis
comparative analysis
Opis:
Due to the multifaceted nature of the revitalisation process, its evaluation and monitoring, as well as possible comparisons, are complex and difficult to carry out. Evaluation of the revitalisation process currently poses a challenge for all municipalities. The article aims to compare the revitalisation process in the two Polish cities of Toruń and Bydgoszcz. The analysis was based on two financial perspectives: 2007–2015 and 2016–2023. The authors chose a multi-criteria analysis method based on the analytical hierarchical process (AHP) as the main research method. The results show that the Local Revitalisation Programme of the City of Toruń for the years 2007–2015 had the best impact on the revitalisation process. Using the AHP method, we could carry out a multidimensional evaluation of the revitalisation process. Moreover, it allowed us to combine different elements of the evaluation of the revitalisation process and transform them into one synthetic result, ranking each programme in a hierarchy. At the methodological level, the article presents a new approach to conduct research in socio-economic geography, using the tool of multi-criteria analysis derived from the disciplines of economics and management sciences. Until now, the AHP method has not been used in the analysis of the revitalisation process, which confirms the innovative character of the conducted research.
Źródło:
Quaestiones Geographicae; 2022, 41, 4; 141-163
0137-477X
2081-6383
Pojawia się w:
Quaestiones Geographicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of sauna bath on the cardiovascular system
Wpływ kąpieli w saunie na układ sercowo-naczyniowy
Autorzy:
Sawicka, Anna
Brzostek, Tomasz
Kowalski, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1938532.pdf
Data publikacji:
2007
Wydawca:
Akademia Wychowania Fizycznego im. Bronisława Czecha w Krakowie
Tematy:
sauna
Cardiovascular System
Heart
Blood Pressure
ecg
układ sercowo-naczyniowy
serce
cisnienie tetnicze
EKG
Opis:
Sauna is a form of biomedical regeneration consisting of consecutive exposure to two opposite thermal agents. Firstly, during sauna bath, a person is exposed to high temperature (ranging from 70 to100 °C) at low relative humidity. Secondly, thermal exposure is followed by body cooling. One sauna bath consists of two or three repeated cycles of heat exposure followed by cooling off. Sauna can be applied in sport, recreation and therapy. The aim of this publication is to present cardiovascular changes elicited by the sauna bath. High temperature induces cutaneous vasodilation and, consequently, an incerase in cutaneous blood flow. Myocardial contractility and heart rate increase. These changes lead to alterations of blood pressure and cardiac output. Abnormalities of the electrocardiogram pattern, changes in activity of renin-angiotensin-aldosterone and blood rheological properties are observed. Cardiovascular responses to sauna bath depend both on the mode and intensity of warming and the applied methods of cooling. The risk of the sauna bath-related cardiovascular complications in healthy persons is small. Nevertheless, it is higher in individuals, who apply excessive heat exposure in order to reduce the body mass or combine sauna bathing with physical effort or alcohol consumption. However, sauna bathing in patients with cardiovascular disease should be used cautiously and preceded by individual assessment of potential risks, considering concomitant medication and the methods of both heat exposure and, especially, cooling off.
Źródło:
Medical Rehabilitation; 2007, 11(1); 23-30
1427-9622
1896-3250
Pojawia się w:
Medical Rehabilitation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Test of rolling stock compatibility with axle counters
Badania kompatybilności taboru kolejowego z licznikami osi
Autorzy:
Olejniczak, Tomasz
Woźniak, Krystian
Kowalski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/33572116.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
rolling stock
axle counter
compatibility
tests
sensor
noise
tabor kolejowy
licznik osi
kompatybilność
badania
czujnik
zakłócenia
Opis:
The article presents the problems linked to the compatibility of the rolling stock with axle counters, specifying acceptable levels of interference for selected types of sensors, and conducting research. Taking measurements on railway infrastructure requires proper preparation of both the substantive test object and measuring station. Measurements are made in accordance with a plan that takes into account all the situations in which the vehicle being tested can generate interference that may cause unstable operation of sensors, such as start-up or braking.
W artykule przedstawiono problematykę związaną z kompatybilnością taboru z licznikami osi, określającą dopuszczalne poziomy zakłóceń dla wybranych typów czujników oraz przeprowadzaniem badań. Wykonywanie pomiarów na infrastrukturze kolejowej wymaga odpowiedniego przygotowania zarówno merytorycznego, badanego obiektu jak i stanowiska pomiarowego. Pomiary wykonuje się zgodnie z przygotowanym planem, który uwzględnia wszystkie sytuacje, w których badany pojazd może generować zakłócenia powodujące niestabilną pracę czujników, takie jak rozruch czy hamowanie.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2017, Nr 3; 61-65
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 19

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