Showing 781 - 800 results of 21,809 for search '"Race ', query time: 0.17s Refine Results
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    FATIGUE STRENGTH ANALYSIS AND OPTIMIZATION OF FSC RACING EXHAUST SYSTEM by QI Qi, LIU HaoTian, WU XiaoJian, LUO Cheng

    Published 2020-01-01
    “…The exhaust pipe of engine is subjected to alternating load of low and high temperatures during operation,which is prone to fatigue damage.For the FSC(Formula Student China) racing engine with the highest speed of 11 000 r/min~13 OOOr/min,the exhaust pipe fatigue problem is more serious.In this paper,the FSC racing exhaust system is taken as the research object to analyze its fatigue strength and optimize the exhaust pipe thickness.Firstly,the Fluent software is used to analyze the conjugate heat transfer of the exhaust system to determine the temperature distribution of the exhaust system.Then the temperature distribution is mapped to the finite element mesh of the exhaust system,and the thermal stress and thermal strain are analyzed by finite element technology.Subsequently,two schemes including exhaust manifold " normal operation-parking cooling" cycle and extreme working condition cycle are designed to carry out the thermal cycle simulation.It is found that the exhaust gas accumulates plastic deformation under the alternating load of each cycle,and the exhaust system will eventually crack and be destroyed.Finally,the fatigue life of the two schemes is studied by using Ansys nCode DesignLife fatigue analysis software.The results show that both schemes effectively reflect the life expectancy of low-cycle fatigue damages under the combined action of exhaust manifold temperature field,thermal stress and strain.Based on the above analysis,the exhaust thickness is optimized by the extreme working condition circulation scheme.and it is verified by experiments that the 1.2 mm thickness steel pipe meets the FSC exhaust requirements.…”
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  6. 786

    Race and sex differences in ROS production and SOD activity in HUVECs. by Sara E Mascone, Katherine I Kim, William S Evans, Steven J Prior, Marc D Cook, Sushant M Ranadive

    Published 2023-01-01
    “…Therefore, the influence of race and sex on reactive oxygen species (ROS) production and superoxide dismutase (SOD) activity following induced inflammation was evaluated in female and male human umbilical vein endothelial cells (HUVECs) from Black and White individuals. …”
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    Definition and use of the variable "race" by medical students in Salvador, Brazil by Crésio Alves, Michele Souza Dantas da Silva, Luciana Muniz Pinto, Maria Betânia Pereira Toralles, José Tavares-Neto

    “…CONTEXT AND OBJECTIVE: The lack of a clear definition for human "race" and the importance of this topic in medical practice continue to create doubt among scholars. …”
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  12. 792

    Arm race between Rift Valley fever virus and host by Xiao Wang, Xiao Wang, Xiao Wang, Yupei Yuan, Yihan Liu, Yihan Liu, Leiliang Zhang, Leiliang Zhang, Leiliang Zhang

    Published 2022-12-01
    “…In this review, we summarize the innate immunity host cells employ depending on IFN signal transduction pathways, as well as the immune evasion mechanisms developed by RVFV primarily with the inhibitory activity of NSs protein. Clarifying the arms race between host innate immunity and RVFV immune evasion provides new avenues for drug target screening and offers possible solutions to current and future epidemics.…”
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  13. 793

    Effects of Lure Type on Chase-Related Behaviour in Racing Greyhounds by Melissa Starling, Bethany Wilson, Paul McGreevy

    Published 2020-12-01
    “…The willingness of racing greyhounds in Australia to chase a mechanical lure on racetracks will affect the longevity of its racing career. …”
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    “Spotting” words: spotter in aircraft observation and photography and in motor racing by Lorena M. A. de-Matteis

    Published 2021-11-01
    “…It proposes an approach to the use of spotter in relation with two activities: observation and photographic record of aircraft, and motor racing. Analysis of spotter in journalistic texts and productions of Spanish speakers on the social network Twitter, shows that this lexical unit has not yet become widespread in the general use of language, although it does signal group identity among those speakers who participate of these activities.…”
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    Creatine supplementation and endurance performance: surges and sprints to win the race by Scott C. Forbes, Darren G. Candow, Joao Henrique Falk Neto, Michael D. Kennedy, Jennifer L. Forbes, Marco Machado, Erik Bustillo, Jose Gomez-Lopez, Andres Zapata, Jose Antonio

    Published 2023-12-01
    “…In terms of time trial performances, results are mixed; however, creatine supplementation appears to be more effective at improving performances that require multiple surges in intensity and/or during end spurts, which are often key race-defining moments. Given creatines ability to enhance anaerobic work capacity and performance through repeated surges in intensity, creatine supplementation may be beneficial for sports, such as cross-country skiing, mountain biking, cycling, triathlon, and for short-duration events where end-spurts are critical for performance, such as rowing, kayaking, and track cycling.…”
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  18. 798

    Optimization-based path planning and collision avoidance for autonomous racing by Keanly Oran, Engelbrecht Jacobus Adriaan Albertus

    Published 2023-01-01
    “…This paper presents a hierarchical motion planner for autonomous racing. The long-term motion planner functions offline and formulates the optimal motion plan for the entire race track. …”
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  19. 799

    Race Matters: 1968 as Living History in the Black Freedom Struggle by Jorrit van den Berk, Laura Visser-Maessen

    “…This is particularly true of race and racial struggle, as unresolved race matters from the past poignantly intersect with twenty-first century activism aimed at countering the continued devaluation of black lives. …”
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  20. 800

    When Race and Gender are on Focus: Discursive Confrontations on Social Network by Roberto Carlos da Silva Borges, Glenda Cristina Valim de Melo

    Published 2019-09-01
    “…Our focus is to produce knowledge regarding the discursive (re)production of race and gender-related slurs in an on-line context. …”
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