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Wyszukujesz frazę "Kucharska, M" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
The evaluation of resorbable haemostatic wound dressings in contact with blood in vitro
Autorzy:
Szymonowicz, M.
Kucharska, M.
Wiśniewska-Wrona, M.
Dobrzyński, M.
Kołodziejczyk, K.
Rybak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/306978.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
opatrunek
chitozan
alginian
mikrofibrydy
nanofibrydy
hemoliza
haemostatic
dressing
chitosan-alginate
nanofibrids
microfibrids
haemolysis
plasmatic clotting system
Opis:
Purpose: For many years research has been conducted on the development of resorbable, polymer, haemostatic materials designed to provide first aid and preliminary protection of injuries. The biological properties in vitro of a dressing in powder form called Hemoguard are expected to provide the ability to instantaneously stem bleeding with safe conditions of use. The aim of the study was to evaluate the haemostatic properties of a model of dressing based on micro- and nanofibrids of the chitosan, sodium/calcium alginate and/or carboxymethylcellulose complex. Dressings were prepared by spray-drying and freeze-drying. Methods: Human whole blood was subjected to timed contact with the haemostatic dressing model. Haemolytic action was determined by assaying the degree of haemolysis and evaluating blood cell morphology. Haemostatic action was determined on the basis of selected parameters of plasmatic clotting systems. Results: Dressings prepared by freeze-drying activated the coagulation system. The haemolytic index, plasma haemoglobin concentration values and blood cell morphological shapes were normal. Dressings prepared by spray-drying significantly activated coagulation. Activation of the coagulation process was evidenced by shorter clotting time of the plasma coagulation system and a longer process of clot formation. The dressing was associated with an increased haemolytic index and higher plasma haemoglobin concentration. The morphological shape of blood cells changed. Conclusions: The model of multi-resorbable wound dressings has haemostatic properties. The materials activate the clotting process more quickly than a single-dressing model. Increased activity was found for dressings prepared by spray-drying.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 1; 151-165
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Symmetry of electromechanical delay, peak torque and rate of force development in knee flexors and extensors in female and male subjects
Autorzy:
Szpala, A.
Rutkowska-Kucharska, A.
Stawiany, M.
Powiązania:
https://bibliotekanauki.pl/articles/307230.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
elektromiografia
gender
kończyna dolna
electromyography
lower extremity
Opis:
Purpose: The aim of the study was to evaluate electromechanical delay (EMD), peak torque (PT) and rate of force development (RFD) in selected muscles of right and left lower extremities in groups of female and male subjects. Methods: The study evaluated 9 volunteer female subjects (mean ± SD: age: 21.67 ± 0.87 years; height: 168 ± 7 cm; body mass: 59.44 ± 4.8 kg) and 10 male university students (mean ± SD: age 22 ± 1.25 years; height: 179 ± 6 cm; body mass: 74.3 ± 5.1 kg) from the Faculty of Physical Education. Muscle torques and electromyographic activity were measured for knee flexors and extensors in static conditions, separately for the right and the left lower extremities. During the measurements, the subjects generated the maximum torque as fast as possible. Surface electrodes were placed on the right and left lower extremities on the following muscles: rectus femoris, vastus lateralis (m.VL), vastus medialis and biceps femoris. Results: Symmetry of EMD, RFD and “flexors-extensors” ratio was found in the muscles of the right and left lower extremities (with an exception of m.VL) in the group of male and female subjects. Statistical analysis demonstrated the presence of asymmetry in PT (297.66 vs. 272.05 N⋅m) and relative force in knee extensors in the group of men (3.90 vs. 3.54 N⋅m⋅kg–1). Conclusions: Symmetry of EMD and asymmetry of PT might suggest that the cause of asymmetry of the muscular force is mainly morphological characteristics of the muscle rather than the process of controlling its activity.
Źródło:
Acta of Bioengineering and Biomechanics; 2015, 17, 1; 61-68
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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