Autor: Uhryński, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analiza termowizyjna zmian temperatury kończyn dolnych pod wpływem drgań ogólnych niskiej częstotliwości
Thermovision analysis of temperature changes in lower extremities after exposing to general low frequency vibrations
Autorzy:: Krzyworzeka, P.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/261640.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki. Katedra Inżynierii Biomedycznej
Tematy:: drgania niskoczęstotliwościowe
termowizja
thermovision
low-frequency vibrations
Opis:: W pracy przedstawiono wpływ drgań niskiej częstotliwości na zmianę temperatury w obrębie kończyn dolnych. Badania odbyły się w lipcu 2006 r. w Krynicy-Zdroju. Eksperyment polegał na przeprowadzeniu 19 dwudziestominutowych treningów z wykorzystaniem drgań ogólnych niskiej częstotliwości (pozycja stojąca), o stałej porze dnia. Przed i po ekspozycji rejestrowano zdjęcia termowizyjne kończyn dolnych. Amplituda drgań niskoczęstotliwościowych wynosiła 4 mm, częstotliwość 3,5 Hz. W eksperymencie uczestniczyło 28 osób. Otrzymane wyniki poddano analizom statystycznym w środowisku Statistica. W analizach statystycznych przyjęto poziom istotności p = 0,05, zastosowano nieparametryczny test Wilcoxona oraz parametryczny test t-studenta dla dwóch grup zmiennych zależnych. Po przeprowadzeniu badań i analiz można stwierdzić, iż po 20 minutach drgań niskiej częstotliwości obserwowane są istotne zmiany temperatur kończyn dolnych.
The influence of low frequency vibrations on temperature variations in lower extremities, is analyzed. The examination was conducted in Krynica-Zdrój in July 2006. The experiment included 19 training sessions, each lasting 20 minutes. The low frequency vibration was applied to each participant in standing position at the same time each day. Before and after the session thermal images were recorded. The low frequency vibration amplitude was 4 mm, while the frequency was 3,5 Hz. 28 participants were examined. The results were analyzed by means of Statistica software. The significance level p = 0,05 was chosen, the non-parametric Wilcoxon test and the parametric t-student test were applied for two groups of dependent variables. It was stated that 20 minutes exposure to low frequency vibrations resulted in significant changes temperature distribution within lower extremities.
Źródło:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna; 2009, 15, 1; 23-26
1234-5563
Pojawia się w:: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Effect of General Low Frequency Vibration on Energy Balance of a Human Being
Autorzy:: Damijan, Z.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1177286.pdf
Data publikacji:: 2013-06
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.50.yt
07.20.-n
Opis:: The work presents the research and analysis concerning general low frequency vibration and its effect on energy balance of a human organism (a comparison with a control group). The research was conducted in two phases: a group exposed to vibration and a control group. An exposed group (28 participants) took part in 19 training sessions, each lasting 20 min, of low frequency vibration (around 3.2 Hz in standing position) applied to each participant at fixed time of the day. Before and after the session, the thermographic images were taken and deep temperature was taken too. The control group (33 participants) also took part in 19 everyday 20-min sessions with no vibrations and only measurements conducted. The results were analysed concerning statistics using Statistica. For the sake of the analysis the significance level was p = 0.05, the parametric T - test, and the non-parametric Kołmogorow-Smirnow tests were used for two groups of independent variables. Having conducted the research and analysis, one can state that 20-min exposure to low frequency vibration results in significant positive changes in chosen parameters.
Źródło:: Acta Physica Polonica A; 2013, 123, 6; 970-973
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Influence of Drivers Working Environment οn Thermical Changes of Their Organism
Autorzy:: Damijan, Z.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1537402.pdf
Data publikacji:: 2010-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 08.89.40.-a
46.40.-f
87.19.R-
43.80.-n
43.80.+p
Opis:: The work presents the research on the influence of driver's working environment on thermical changes in their organism. The experiment was conducted between 24 and 31 March 2008 in the tram depot of Public Transport Agency in Tychy. Thermo-visual photos were conducted twice a day - before starting work and after finishing it during six following days. The group consisted of 14 drivers aged 24-49 driving city buses (the make: Solaris Urbino 18). The results were analyzed concerning statistics using Statistica. For the sake of the analysis the significance level was p = 0.05, the non-parametric Wilcoxon test or parametric T-test were used for two groups of dependent variables. The research and analysis show that driver's working environment has valid influence on thermical changes in their organism.
Źródło:: Acta Physica Polonica A; 2010, 118, 1; 35-40
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The Influence of General Low Frequency Vibration on Posture Stability
Autorzy:: Damijan, Z.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1490372.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 89.40.-a
07.10.-h
46.32.+x
87.50.Y-
Opis:: The work presents the research and analysis concerning general low frequency vibration and its influence on posture stability. The research was conducted in two phases: a group exposed to vibration - August 2006, a control group: November 2006 in Krynica-Zdrój. An exposed group (29 participants/took part in 19 training sessions, each lasting 20 min, of low frequency vibration, standing position) applied to each participant at fixed time of the day. The low frequency vibration amplitude was 4 mm, while the frequency was 3.5 Hz. Before and after the session the posturographic examination of posture stability was conducted. The control group (33 participants) also took part in 19 everyday 20 min sessions with no vibrations and only measurements conducted. The results were analyzed concerning statistics using Statistica. For the sake of the analysis the significance level was p = 0.05, the parametric t-test and the nonparametric Kolmogorov-Smirnov tests were used for two groups of independent variables. Having conducted the research and analysis, one can state that 20 min exposure to low frequency vibration results in significant changes in posture stability and 19 day long vibration training changes significantly the posture stability among the participants. The observed changes were of positive nature. The work introduces research on the possibility of using low-frequency vibration to improve human stability. The results presented concern biophysics in rehabilitation of posture stability and are not often met in specialist literature.
Źródło:: Acta Physica Polonica A; 2012, 121, 1A; A-028-A-031
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Systemic Cryotherapy Influence of Low Temperatures on Selected Physiological Parameters
Autorzy:: Damijan, Z.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/1490377.pdf
Data publikacji:: 2012-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 07.20.Mc
Opis:: The work presents the research and analysis of the influence of low temperatures on selected physiological parameters of a human being. The research was conducted in the 20th Military Healing and Rehabilitation Hospital SPZOZ in Krynica-Zdrój, Poland. Systematic cryotherapy is a procedure during which the whole body, including the head, is exposed to very low temperature (about - 110°C) in a short time (no more than 3 min). The procedure is of a stressful nature; the exposure of almost naked body to a temperature not met in human natural environment causes a sudden mobilization of all the organism defence forces which is used in treatment, sport training and biological renewal. The reaction to extreme cold takes form of a short contraction which is followed by long-lasting - a few hours - dilatation of skin blood vessels. It is accompanied by analgesic and anti-inflammatory effect, relaxation of bronchi muscles, tendency to decrease oedemas and exudates, increase in immunity and mood, including even the euphoria feeling. The research included 20 people after having signed the agreement and excluding any contraindications. The research was carried on following the criteria of the estimate of research reliability according to Jadad randomisation. Every day, during 14 weekdays, after and before the procedure (3 min stay in a cryochamber, t = - 110°C) the measurement of selected parameters were taken, such as: systolic and diastolic pressure, pulse, temperature in aural canal, body mass, fatty tissue and changes of outer body temperatures (thermo-vision analysis). On the basis of the results and conducted analysis one can state that systemic cryotherapy causes the following changes: statistically significant increase of systolic pressure, diastolic pressure, fatty tissue, significant drop of pulse, deep temperature in aural canal and outer body temperature in analysed thermograms. The results were developed statistically using standard methods in accordance with algorithms of statistical inference. The aim of the work is the research on how a short-term exposure to cold changes the outside temperature of the front of a body, and answer to the question if the limb heat - the left and right side - reacts to heat identically. The work introduces biophysical research of the influence of low temperatures on thermodynamic changes in a human being. The results presented are not often met in specialist literature.
Źródło:: Acta Physica Polonica A; 2012, 121, 1A; A-038-A-041
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The analysis of heating process of catalytic converter using thermo-vision
Analiza procesu nagrzewania reaktora katalitycznego przy użyciu termowizji
Autorzy:: Worsztynowicz, B.
Uhryński, A.
Powiązania:: https://bibliotekanauki.pl/articles/134003.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: internal combustion engine
catalytic converter
thermovision
silnik spalinowy
reaktor katalityczny
termowizja
Opis:: The article tackles the issues related to a process of heating of three way catalytic converter during the cold start and the heating of the spark ignition engine. The measurements on the test bench were performed, taking into consideration how engine works directly after the start, on the idle speed and under the load, during which the temperature of the exhaust gases in the exhaust system and coolant on the cylinder head were measured. At the same time the track of the heat state of the catalytic converter was monitored using thermo-vision camera. The results of the measurements were presented as charts and selected thermo-grams, qualitatively representing the issue of heating of the catalytic converter.
W artykule omówiono zagadnienia związane z procesem nagrzewania trójfunkcyjnego reaktora katalitycznego podczas zimnego rozruchu i nagrzewania silnika spalinowego ZI. Przeprowadzono pomiary na stanowisku hamowni, uwzględniając pracę silnika bezpośrednio po rozruchu, na biegu jałowym oraz obciążonego, w czasie których mierzono temperaturę spalin w układzie wylotowym i cieczy w głowicy silnika, równocześnie prowadząc zapis stanu cieplnego reaktora katalitycznego przy użyciu kamery termowizyjnej. Wyniki pomiarów przedstawiono w postaci wykresów oraz wybranych termogramów, obrazujących jakościowo zagadnienie nagrzewania się reaktora katalitycznego.
Źródło:: Combustion Engines; 2015, 54, 3; 41-51
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The analysis of thermal state of catalytic converter depending on fuel supply and engine load using thermo-vision
Autorzy:: Worsztynowicz, B.
Uhryński, A.
Borkowski, B.
Pluta, M.
Powiązania:: https://bibliotekanauki.pl/articles/132956.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: catalytic converter
thermovision
thermal state
emissivity
reaktor katalityczny
termowizja
stan termiczny
emisyjność
Opis:: The paper discusses the problem of thermal state of three-way catalytic converter depending on engine load with spark ignition fueled with gasoline and natural gas. The measurements on the test bench were performed, during which the temperature of the exhaust gases in the exhaust system was measured with the help of thermocouples, and at the same time, the track of the thermal state of the catalytic converter was monitored using thermo-vision camera. The stable work of engine with different rotation speed and values of load was considered together with transient states. The results of the measurements were presented in forms of charts and selected thermograms, qualitatively presenting the issue of thermal state of the catalytic converter.
Źródło:: Combustion Engines; 2017, 56, 3; 30-36
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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