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Wyszukujesz frazę "Hu, Gang" wg kryterium: Autor

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Spatial synchronization of unbalanced rotors excited with paralleled and counterrotating motors in a far resonance system
    Autorzy:
    Fang, Pan
    Zou, Min
    Peng, Huan
    Du, Mingjun
    Hu, Gang
    Hou, Yongjun
    Powiązania:
    https://bibliotekanauki.pl/articles/279402.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    synchronization
    rotors
    dynamics
    stability
    Opis:
    Dynamic characteristics of the vibration screening machinery is influenced by synchronization between induction motors. Therefore, estimating the synchronous state between the motors is a crucial process for designing the vibration screening machinery. In this paper, two rotors excited with paralleled and counterrotating motors in a far resonance system are concerned. To master the synchronization of the system, the dynamic model is firstly established; then, the synchronous condition of the system is derived with the Poincar´e method; subsequently, the synchronous stability of the system is discussed by the Hamilton principle; finally, some computation simulations are implemented to verify correctness of theoretical analysis. The research result shows that the system actuated by rotors of the identical mass is planar motion as the stable phase difference between the rotors is stabilized in the zero phase. The system actuated by nonequivalent mass rotors exhibits spatial motion as the stable phase difference stabilizes in a nonzero phase.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2019, 57, 3; 723-738
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stair-like multivariable generalized predictive control of pulverizing system in thermal power plants
    Autorzy:
    Zhang, Jiansheng
    Zhang, Gang
    Gao, Yaokui
    Hu, Yong
    Powiązania:
    https://bibliotekanauki.pl/articles/136266.pdf
    Data publikacji:
    2019
    Wydawca:
    EEEIC International Barbara Leonowicz Szabłowska
    Tematy:
    power plants
    predictive Control
    pulverization process
    Opis:
    Pulverizing system is an important part in the clean and efficient utilization of coal in thermal power plant, and the optimal control of the system is an important way to achieve this goal. This paper presents a stair-like multivariable generalized predictive control scheme for a pulverizing system. This control scheme focuses on the problem of predictive control algorithm in practical application, and integrates the feedforward experience in traditional control schemes of pulverizing system. Simulation results showed that the scheme are able to realize the decoupling control of the pulverizing system, avoid the problem of matrix inversion, reduce the amount of calculation, and has certain engineering application value.
    Źródło:
    Transactions on Environment and Electrical Engineering; 2019, 3, 1; 21-25
    2450-5730
    Pojawia się w:
    Transactions on Environment and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polyamine plays a role in subculture growth of in vitro callus of indica rice
    Autorzy:
    Tan, Yanping
    Hu, Wen
    Xu, Xin
    Zhou, Jie
    Wang, Chuntai
    Liu, Xuequn
    Cheng, Gang
    Powiązania:
    https://bibliotekanauki.pl/articles/952026.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    browning
    callus
    gene expression
    indica rice
    polyamine
    Opis:
    In vitro embryogenic callus is a critical factor for genetic transformation of rice, especially for indica varieties. In this study, we investigated the relationship between polyamines, including putrescine (Put), spermidine (Spd) and spermine (Spm), and callus browning, and we studied the effect of exogenous Put on callus regeneration and on the content of endogenous polyamines. In addition, the expression levels of arginine decarboxylase gene (Adc1) and S-adenosylmethionine decarboxylase gene (Samdc) in embryogenic callus were studied by quantitative Real-time PCR analysis. The results showed that the contents of endogenous Put and Spd in the browning callus were significantly lower than those in normal callus. Exogenous Put could effectively improve the growing state of callus of indica rice and enhance the development of embryogenic callus. The content of endogenous polyamines in embryogenic callus, especially Spd and Spm, was increased after addition of exogenous Put. Additionally, exogenous Put also had an obvious impact on the expression levels of Adc1 but partial effect on the expression levels of Samdc gene. This study could increase the knowledge of both embryogenic callus induction and polyamine catabolism in callus in indica rice.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2017, 59, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of airplane passenger seat armrest height on human neck comfort when using a smartphone
    Autorzy:
    Tang, Xing
    Yu, Suihuai
    Chu, Jianjie
    Zhang, Luwei
    Fan, Hao
    Hu, Yukun
    Jiang, Gang
    Powiązania:
    https://bibliotekanauki.pl/articles/2084809.pdf
    Data publikacji:
    2022-04-11
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    smartphone
    airplane
    armrest height
    head posture
    neck comfort
    flexion angle
    Opis:
    ObjectivesThe objective of this study was to explore the relationship between seat armrest height and human neck comfort when using a smartphone while sitting on a passenger seat during the flight.Material and MethodsThe authors used a wireless angle-measuring instrument and subjective comfort scale to evaluate the changes of head flexion angle and neck comfort level of 24 young smartphone users in an aircraft simulated cabin.ResultsThe study results indicated that using a smartphone while sitting on a passenger seat during the flight would pose a larger discomfort to the neck, and the discomfort would be higher for gaming than reading tasks. Seat armrest height is related to the comfort level of the neck when using a smartphone, increasing the height of the armrest can effectively alleviate discomfort in this state.ConclusionsConsidering the prevalence of passengers using smartphones in aircraft, a seat armrest that can be properly adjusted in height, which can effectively reduce the risk of passenger head flexion angle and neck discomfort.
    Źródło:
    International Journal of Occupational Medicine and Environmental Health; 2022, 35, 2; 199-208
    1232-1087
    1896-494X
    Pojawia się w:
    International Journal of Occupational Medicine and Environmental Health
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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