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    Wyświetlanie 1-5 z 5
    Tytuł:
    Static analysis of the tipper semi-trailer frame
    Autorzy:
    Misiak, J.
    Stachura, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/244712.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    static balance
    global static
    web local buckling
    Finite Element Method
    równowaga statyczna
    metoda elementów skończonych
    Opis:
    The article presents a static analysis of the existing three-axle tipper semitrailer using the finite element method. The tipper trailer frame must be strong enough to carry loads from the load while driving, during an accident and especially when emptying the load box when a very large part of the load is pointing at the rear of the frame. Frames are usually made of low-alloy steel with increased strength, most often of grade S355J2G3; duralumin alloy frames are also used. The currently designed semi-trailer frames are becoming more lightweight while the required load capacity and durability are retained. This is possible thanks to the use of computational methods by the engineers in this finite element method. Static analysis allows for the determination of stress and deformation in the loaded frame and also a possible modification of the frame. The aim of the work was to investigate the influence of the position of the crossbar on the level of stress and deformations for three different load situations of the frame.
    Źródło:
    Journal of KONES; 2018, 25, 1; 289-294
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effects of Different Exercise Intensities on the Static and Dynamic Balance of Older Adults: A randomised Controlled Trial
    Autorzy:
    Ghasemabad, Kamran
    Kamalden, Tengku
    Dev, Roxana
    Gasibat, Qais
    Nekooei, Pooya
    Majlesi, Sara
    Nekouei, Paria
    Alemi, Behzad
    Powiązania:
    https://bibliotekanauki.pl/articles/2148827.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
    Tematy:
    elderly
    resistance training
    high-intensity training
    moderate-intensity training
    low-intensity training
    static balance
    dynamic balance
    Opis:
    This study aims to find the effectiveness of different exercise intensities (high-, moderate-, and low-intensity) on the dynamic and static balance of elderly women. A single-blinded factorial design study was conducted in healthy older adults (>65 years) in 12 weeks. The authors have assessed the Forward Reach Test (FRT), Lateral Reach Test (LRT), One Leg Stand (OLS), Tandem Stand Test (TST) in 60 healthy older women at a gym centre, Fit House located in Bukit Rimau, Kuala Lumpur, Malaysia. Participants were randomly assigned to a High-Intensity Training (HIT) group; (n=15) (Mean age 69.60 ± 3.68) who performed four exercises [Leg Press (LP), Leg Extension (LE), Leg Curl (LC), and Calf Raises (CR)] at 80 to 90% of One-Repetition Maximum (1RM); Moderate-Intensity Training (MIT) group (n=15) (Mean age 69.27 ± 3.41) performed at 65 to 75% of 1RM; Low- Intensity Training (LIT) group (n=15) (Mean age 69.27 ± 1.94) performed at 50 to 60% of 1 RM; and a Control Group (CG) (n = 15) (Mean age 68.67 ± 2.38) with no training. Data was collected at pre-test, 4th, 8th, and 12th weeks of intervention. 60 participants were analysed and the main effect of time showed a statistically significant difference in the mean of all variables (all p < 0.001), and also there was a statistically significant interaction between intervention and time on all variables (all p < 0.001). Different levels of intensity on only the lower extremities muscles had a significant effect on the dynamic balance and static balance of the elderly population. After four weeks of training HIT, MIT, and LIT illustrated significant improvement in dynamic balance, as well as static balance.
    Źródło:
    Central European Journal of Sport Sciences and Medicine; 2022, 39; 49-64
    2300-9705
    2353-2807
    Pojawia się w:
    Central European Journal of Sport Sciences and Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of postural control in 6–17 old years healthy children. Part I Postural control evaluation in modified Clinical Test for The Sensory Interaction on Balance in 6–17 old year children (mctsib)
    Autorzy:
    Orendorz-Frączkowska, Krystyna
    Kubacka, Marzena
    Powiązania:
    https://bibliotekanauki.pl/articles/1397293.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    balance maturation
    balance system in children
    posturography
    static and dynamic balance
    vestibulospinal reflexes
    Opis:
    Introduction: Proper development of postural control in children is connected with the maturation of the central nervous system, development of sensory organisation with appropriate use of proprioceptive, visual, vestibular information as well as reactions and postural strategy which allow the maintenance of balance in changeable environmental conditions. Developmental disturbances in this particular area is reflected in postural disfunctions and the assessment of these disfunctions and disturbances needs referring to normative values of the healthy population of children. Aim: Examination of postural control development in children aged 6–17 years. Material: 127 healthy children were tested (65 girls and 62 boys) aged 6–17 years. Method: Laryngological investigation, medical history interview, audiometry and tympanometry were conducted in all children. In the evaluation of postural control (mCTSIB-modified Clinical Test For The Sensory Interaction On Balance) a computer posturography system was used (Balance Master Neurocom). R esults: Further development of postural control was found in healthy children up to the age of 13 years of age. The development was not linear but showed transient characteristics with a faster development stage between the age of 6–7 and 8–9. Better postural control in girls, particularly the youngest, in comparison with boys was noticed. C onclusions: 1. The values of norm postural control in posturographic test mCTSIB in children aged 6–17 was established. In this test postural control development was completed in children before 13 year and it was not linear. 2. Due to gender differences it seems appropriate to use separate norms in order to evaluate the development of postural control in boys and girls.
    Źródło:
    Polish Journal of Otolaryngology; 2020, 74, 1; 29-35
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of postural control in 6–17 old years healthy children. Part II Postural control evaluation – Limits of Stability Test (LOS) in 6–17 old year children
    Autorzy:
    Orendorz-Frączkowska, Krystyna
    Kubacka, Marzena
    Powiązania:
    https://bibliotekanauki.pl/articles/1397378.pdf
    Data publikacji:
    2020
    Wydawca:
    Index Copernicus International
    Tematy:
    balance maturation
    balance system in children
    limits of stability
    posturography
    static and dynamic balance
    Opis:
    Introduction: The ability to Reach quickly to changing external stimuli, to move the body quickly and precisely in any direction and to maintain the centre of gravity above the support base, all contribute to maintaining balance in dynamic conditions. The Limits of Stability Test (LOS) provides information on the state of dynamic equilibrium in a standing position. Aim : Assessment of dynamic postural control in developmental age. Material : 127 healthy children (65 girls and 62 boys) aged 6 – 17years. Methods: All children underwent LOS test (posturograph NeuroCom) with registration of reaction time (RT), movement velocity (MVL), directional control (DCL) , maximum excursion (MXE) and endpoint excursion (EPE). Results: At the age of 6-7 years, not fully developed jumping strategy and visual feedback mechanism in the control of movement were observed. All tested parameters were significantly worse in children aged 6 – 9 years. After this period, a significant improvement in TR and MVL was observed, with no significant changes in subsequent age groups while significant improvement in MXE up to 12 , EPE and DCL up to 13 years of age was noted. No significant gender differences were fund in the LOS test parameters. Conclusions: 1 The LOS test showed significantly lower dynamic balance development in children aged 6 – 7 years. 2 The study showed a significant improvement in all parameters of the LOS test up to 13 years of age, which supports the termination of the function at that time.
    Źródło:
    Polish Journal of Otolaryngology; 2020, 74, 4; 18-24
    0030-6657
    2300-8423
    Pojawia się w:
    Polish Journal of Otolaryngology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Static and dynamic analysis of a pump impeller with a balancing device. Part I: static analysis
    Autorzy:
    Kundera, C.
    Martsinkovsky, V. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/955217.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    pompa wirowa
    analiza statyczna
    wirnik
    pump impeller
    balance device
    static analysis
    Opis:
    This part of the work presents the design and static analysis of an impeller for a single-stage pump. The impeller is directly connected with a balancing device. The impeller needs to have a properly designed system of longitudinal and lateral clearances on both sides. With the simplifying assumptions concerning the flow and distribution of pressure in the longitudinal and lateral clearances, the static analysis involved deriving relationships between the impeller geometry and the basic performance parameters of the pump. A numerical example was used to show the calculation procedure of static characteristics for the predetermined parameters.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 3; 609-619
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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