Wyniki wyszukiwania - BazTech

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Hip strategy alterations in patients with history of low disc herniation and non-specific low back pain measured by surface electromyography and balance platform

Ciesielska J., Lisiński P., Bandosz A., Huber J., Kulczyk A., Lipiec J.

Acta of Bioengineering and Biomechanics

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2015

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Vol. 17, no. 3

103--108

EN

Purpose: The appearance of pathology in the lumbar spine, such as a previous episode of low disc herniation or non-specific low back pain contributes to improper activation of the hip muscles. The aim of the study was to detect alterations in hip strategy manifested by differences in balance parameters and rectus femoris and gluteus maximus activity in people with previous episode of pain radiation to one lower limb caused by low disc herniation or non-specific low back pain. Methods: We studied 11 patients with history of low-disc herniation, 9 patients with history of non-specific low back pain and 10 healthy subjects. Hip strategy alterations were detected by measuring rectus femoris and gluteus maximus activity in bilateral surface polyelectromyographic recordings and by stability measurements on a balance platform. Results: In the surface polyelectromyography study, in both patients' group the value of the average amplitude was higher and the amount of the fluctuations was lower than in healthy subjects. There were no significant differences in stability parameters. Conclusions: A changed pattern of hip muscles activity was detected in the patients without changes in stability parameters. Greater disorder occurs in people in with previous episode of pain radiation to one lower limb caused by low disc herniation than in people with non-specific low back pain.

2

Entropy generation minimization in steady-state and transient diffusional heat conduction processes Part I – Steady-state boundary value problem

Kolenda Z. S., Szmyd J. S., Huber J.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2014

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Vol. 62, nr 4

875--882

EN

An application of the Entropy Generation Minimization principle allows new formulation of the boundary and initial boundaryvalue problems. Applying Euler-Lagrange variational formalism new mathematical form of heat conduction equation describing steady-state processes have been derived. Mathematical method presented in the paper can also be used for any diffusion heat and mass transfer process. Linear and non-linear problems with internal heat sources have been analyzed.

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Importance of the functional examination in lower extremities in patients with rheumatoid arthritis

Wareńczak A., Lisiński P., Huber J.

Acta of Bioengineering and Biomechanics

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2014

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Vol. 16, no. 3

103--110

EN

This paper deals with evaluation the lower extremity efficiency and balance in rheumatoid arthritis (RA) patients. Own authors test (LLFT-lower extremities functional test) and balance tests during normal standing and tandem positions with eyes opened or closed were used. Twelve patients with RA and fifteen controls for comparison were examined. Center feet of pressure dislocation on platform in normal standing with eyes open, normal standing with eyes closed, tandem left foot in front and tandem right foot in front positions and further dynamic balance tests on three different boards were analyzed. Visual Analogue Scale monitored level of pain after each LLFT task. There was found a relation between intensity of pain and overloading of joints in particular tasks, resulting in lower extremities dysfunction. Significant disbalance in medio-lateral direction during normal standing with eyes closed and tandem right foot in front positions and also in anterior-posterior direction in tandem right foot in front position during static balance tests was found. Correlations showed that patient’s age, disease’s duration and Steinbrocker Functional Classes have an influence on parameters of balance tests. Results indicate that complex dysfunction of lower extremities causes disbalance of posture in static conditions.

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The Influence of Clothes Made from Natural and Synthetic Fibres on the Activity of the Motor Units in Selected Muscles in the Forearm - Preliminary Studies

Zimniewska M., Huber J., Krucińska I., Torlińska T., Kozłowski R.

Fibres & Textiles in Eastern Europe

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2002

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Vol. 8, no. 4 (39)

55--59

EN

The present paper deals with new health aspects of clothing. These research studies were undertaken to determine the influence of natural and synthetic fibres which temporarily cover the forearm muscles on the activity of the motor units in these muscles. The electrophysiological parameters of motor units were measured with electromyographical methods. The results of the tests showed that temporarily covering the examined muscles in the forearm with synthetic clothing changed the pattern of the motor units’ activity. Covering the forearm with natural clothing evoked no such effect.

PL

W artykule opisano nowe zjawisko, jakim jest wpływ odzieży na stan czynnościowy mięśni użytkownika. Badano parametry elektromiograficzne mięśni osłoniętych odzieżą lnianą, a następnie poliestrową. Badania przeprowadzono przy pomocy aparatu EMG. Rezultaty prac pokazały, że czasowe osłonięcie mięśni przedramienia odzieżą poliestrową częściowo zmienia zapis EMG badanych jednostek ruchowych. W przypadku osłonięcia przedramienia odzieżą lnianą, zjawiska takiego nie zauważono.

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Rozwój standardów techniki UMTS - usługi multimedialne w telekomunikacji ruchomej w wizji IMT-2000

Huber J., Weiler D., Brand H.

Przegląd Telekomunikacyjny + Wiadomości Telekomunikacyjne

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2001

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nr 3

167-173

PL

Przedstawiono historię i stan obecny prac nad globalnym standardem techniki UMTS. Opisano także główne decyzje techniczne, podjęte w toku prac standaryzacyjnych.

EN

The history and presence of UMTS global standarization are discussed. Key technology decisions for UMTS are also briefly presented.