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Wyświetlanie 1-5 z 5
Tytuł:
Problemy regulacji ciśnienia gazu surowego w komorach baterii koksowniczych systemu zasypowego i ubijanego
Problems with pressure control of raw gas in coke oven batteries charged with stamped and unstamped coal
Autorzy:
Fitko, H.
Chwała, T.
Powiązania:
https://bibliotekanauki.pl/articles/970883.pdf
Data publikacji:
2014
Wydawca:
AXIS MEDIA
Tematy:
gaz surowy
regulacja ciśnienia
bateria koksownicza
system zasypowy
system ubijany
raw gas
pressure control
coke batteries
stamped coal
unstamped coal
Opis:
Celem publikacji jest przedstawienie zasad ustalania optymalnego poziomu ciśnienia gazu surowego w komorach koksowniczych pracujących zarówno w systemie zasypowym jak i ubijanym. Przedstawiono przykładowe charakterystyki zmian ciśnień w toku komór dla obu rodzajów baterii koksowniczej. Zaprezentowano koncepcję techniczną i rozwiązanie konstrukcyjne Zaworu Regulacyjno- Odcinającego "ZaReO", który jest głównym elementem wykonawczym nowego systemu indywidualnej regulacji ciśnienia gazu surowego w komorach baterii koksowniczych.
Scope of this publication is presentation of determination principles of crude gas pressure optimal level in coke oven chambers both in gravity and stamp charging system. Examples of pressure changes characteristic in sole of coke oven chamber for both types of coke oven batteries has been presented. Technical concept and constructional solution shut-off and control valve "ZaReO", which is the main executive element of the new individual regulation system of raw gas pressure in coke oven chambers, has been described.
Źródło:
Piece Przemysłowe & Kotły; 2014, 7-8 / 9-10; 17-22
2082-9833
Pojawia się w:
Piece Przemysłowe & Kotły
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena efektów odległych zabiegu operacyjnego i postępowania usprawniającego u pacjentów po rekonstrukcji zerwanego ścięgna Achillesa materiałem węglowym
Evaluation of remote effects of operative procedure and rehabilitation treatment of patients who have undergone reconstruction of ruptured Achilles tendom with carbon material
Autorzy:
Walaszek, R.
Kasperczyk, T.
Chwała, W.
Staszków, E.
Powiązania:
https://bibliotekanauki.pl/articles/284674.pdf
Data publikacji:
2009
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
materiał węglowy
rekonstrukcja ścięgien Achillesa
rehabilitacja ruchowa
ocena narządu ruchu
carbon material
reconstruction of Achilles tendom
physiotherapy
research of the Motor System
Opis:
W pracy dokonano oceny efektów odległych zabiegu operacyjnego i postępowania usprawniającego u pacjentów, u których dokonano zabiegu zszycia przerwanego ścięgna Achillesa nićmi i taśmami wykonanymi z materiału węglowego. Stosowano metodę Łukasika w modyfikacji dr. Staszkowa (szwy kotwiczące pojedyncze + pięć szwów ciągnących). Od lutego do września 2008 roku udało się przebadać 16 z 37 uprzednio operowanych osób. Wiek pacjentów obojga płci mieścił się w zakresie od 43 do 69 lat. Badania obejmowały: pomiary zakresów ruchów czynnych i biernych wyprostu grzbietowego i zgięcia podeszwowego w stawach skokowych kończyn operowanych i nieoperowanych, pomiary obwodów kończyn dolnych oraz pomiary grubości ścięgien Achillesa. Po wielu latach od operacji zerwanego ścięgna Achillesa badanym pacjentom nie udało się odbudować w pełni masy mięśniowej mięśnia trójgłowego łydki w kończynach operowanych.
This paper aims to assess the remote effects of operative procedure and rehabilitation treatment of patients whose ruptured tendon has been reconstructed with sutures and tapes made of carbon material. Dr. Staszków's modification of Łukasik's method has been used (single anchoring suture + five pulling sutures). During the period from February to September 2008, 16 of 37 operated patients were examined. The patients were both male and female, aged between 43 and 69. The examination included: measurements of active and passive mobility of dorsal extension and plantar flexion in ankle joints of operated limbs and non-operated limbs, measurements of circumference of both Iower limbs and measurements of thickness of Achilles tendons. Even many years after the reconstruction of a ruptured Achilles tendon with carbon material, patients did not manage to rebuild the muscle mass of the triceps calf muscle entirely in operated limbs.
Źródło:
Engineering of Biomaterials; 2009, 12, 87; 13-23
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors determining swimming efficiency observed in less skilled swimmers
Autorzy:
Kucia-Krzysztoń, K.
Dybińska, E.
Ambroży, T.
Chwała, W.
Powiązania:
https://bibliotekanauki.pl/articles/306793.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
training loads
swimming strokes
kinematics
pływalnia
kinematyka
szkolenie
sport
Opis:
The dynamics of performance in professional sport requires a systematic improvement of the training process. Such activities should also include optimizing the children and youth training in these disciplines, where an early specialization operates. The main aim of this paper was to search for the relationship between swimmer’s segmental kinematics (segmental velocities, stroke rate, stroke length, stroke index); the relationship between swimmer’s technical skill level (in four competitive swimming techniques) and training overloads taking into consideration gender and age effect. The study group consisted of 121 swimmers (69 female and 52 male), of the Polish 12–15 age group swim team, volunteered to serve as subjects. Video-based methods and video equipment are being applied to assist qualitative and simple quantitative analysis for immediate feedback and research in swimming. Both technical skill level preparation and segmental kinematics of 12–15 year old swimmers proved to be highly conditioned by implemented training intensity ( p < 0.001), as well as the volume of training (high and average trade at a level of significance p < 0.001). Implemented training overloads expressed by both volume and intensity of training showed high and very high correlation with the swimming efficiency, presented segmental kinematics and technical skill level, however, there appeared particularly pronounced relationship with the size of kinematic parameters taken into account in four competitive swimming techniques, components of the 100 m individual medley.
Źródło:
Acta of Bioengineering and Biomechanics; 2013, 15, 4; 115-124
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship of maximal isometric torque produced in flexors and extensors rate to technique by judo athletes
Autorzy:
Sterkowicz, S.
Lech, G.
Sterkowicz-Przybycień, K.
Chwała, W.
Ambroży, T.
Pałka, T.
Powiązania:
https://bibliotekanauki.pl/articles/307561.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
skład ciała
biomechanika
sport
athletic performance
body composition
biomechanics
martial arts
Opis:
Purpose: Development of strength is one of essential elements of motor preparation of judo athletes. The aim this study was to examine the influence of body composition and the joint torques on successful performance of various judo techniques. Methods: Twentyfive judo athletes participated in 175 judo bouts, which were video-recorded during the All-Polish competitions. Biomechanical classification of technical actions was used. The age and athletic experience of the subjects were 18 and 8.8 years, respectively. Their body height was 179.4 cm (Martin’s type anthropometer) and body mass was 80.3 kg (Sartorius F 1505 – DZA scales). Percentage of fat (10.6%) was estimated using skinfold result measurements. BMI (24.9 kgm–2), fat-free mass index (21.9 kgm–2) and fat mass index (3.0 kgm–2) were calculated. Maximum torques measured under static conditions were evaluated 2–3 days after the tournament. Descriptive statistics and ANOVA were conducted ( p 0.05). Results: Balancing of maximum torques in the muscles of the pelvic and illiac regions caused more frequent performance of physical lever-type throwing techniques, compared to couple of force-type throwing techniques. A negative correlation was found between body fat and value of force recorded for knee flexors and between the frequency of using techniques during groundwork and torques measured in hip extensors. High correlation of fat-free mass index and relative elbow flexor torque was found. Conclusions: The relationship between body composition and frequency of techniques used in a tournament, and joint torques developed by athletes were found.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 2; 65-71
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of hippotherapeutic exercises with larger support surface in development of balance in boys aged 15 to 17 years with mild intellectual disability
Autorzy:
Ambroży, T.
Mazur-Rylska, A.
Chwała, W.
Ambroży, D.
Mucha, T.
Omorczyk, J.
Ostrowski, A.
Mucha, D.
Powiązania:
https://bibliotekanauki.pl/articles/307283.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
parametry stabilograficzne
równowaga
hipoterapia
niepełnosprawność
stabilographic parameters
balance
hippotherapy
intellectual disability
mild intellectual disability
Opis:
Purpose: Maintaining balance in humans involves continuous changes in parameters. The aim of this study was to assess the effect of hippotherapeutic exercises on development of the sense of balance in boys aged 15 to 17 years with mild intellectual disability. Methods: The study examined 50 randomly chosen boys aged 15 to 17 years with mild intellectual disability from the special education centre in Leżajsk, Poland. The study participants were divided into two groups: experimental group, who participated for 3 months in hippotherapeutic classes and the control group, with boys attending outdoor or indoor physical education classes. Before and after completion of the study, both experimental and control groups were diagnosed by means of Accu SwayPlus force plate. The force plate was used to determine alterations in the position of the centre of pressure (COP) on the platform in the frontal and sagittal planes in relaxed standing position with feet spread to the shoulder width and with eye control with respect to the base of support (BOS). The description was based on mean displacement of the centre of gravity (COG), mean velocity of displacements of the COG, mean radial displacement and total length of the COP pathway. Results: In the experimental group, equestrian exercises induced a series of significant changes that pointed to the improved balance reactions. The character of these changes in the positions analysed was similar: values of body sway in the sagittal plane and their range and mean displacements decreased statistically significantly after training. The same tendency was observed for mean radial displacements in the free open position and with closed support surface. Furthermore, the velocity of displacement and the length of the COP’s projection pathway on the support surface in the free open position was also reduced. All significant changes and trends found for the experimental group, which occurred after 3 month of hippotherapeutic classes, suggest improved parameters of balance. Conclusions: The lack of changes in balance parameters in the control group shows that the hippotherapeutic classes significantly develop balance abilities in boys aged 15 to 17 years with mild intellectual disability.
Źródło:
Acta of Bioengineering and Biomechanics; 2017, 19, 4; 143-151
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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