Showing 181 - 200 results of 2,545 for search '"helium"', query time: 0.10s Refine Results
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    Notes on altitude control for helium balloons for area-keeping solutions by Kanesh B., Mohamed Haneefa Jiyavudeen, Muthukumar Balaji, Yu, Sheng Cheng, Lee, Hui Yao, Heng, Wei De, Lim, Seng, Ho, Shen Yong

    Published 2023
    “…Notes on the Project on altitude control of helium balloon using the "French ballonet" method. …”
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    Industrial Attachment (IA)
  8. 188

    On the formation of single and binary helium-rich sdO stars by Justham, S, Podsiadlowski, P, Han, Z

    Published 2010
    “…We propose a formation channel for the previously unexplained helium-rich subdwarf O (He-rich sdO) stars in which post-subdwarf B (sdB) stars (i.e. hybrid COHe white dwarfs) reignite helium burning in a shell after gaining matter from their helium white-dwarf (WD) companions. …”
    Journal article
  9. 189

    The origin of high helium concentrations in the gas fields of southwestern Tanzania by Mtili, KM, Byrne, DJ, Ballentine, CJ, Tyne, RL, Kazimoto, EO, Kimani, CN, Kasanzu, CH, Hillegonds, DJ, Barry, PH

    Published 2021
    “…In summary, these data demonstrate interaction between two distinct helium sources, one of which is crustal in origin (most prominent in RRB) and the other being mantle-derived (enriched in RVP). …”
    Journal article
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    VIBRATIONAL-ENERGY TRANSFER IN ORGANIC-MOLECULES .2. HELIUM + ETHENE by Clary, D

    Published 1984
    “…Application of the method is made to the calculation of vibrational relaxation rate constants for eight different vibrational modes of cyclopropane in collisions with helium atoms. Excellent agreement is obtained between the calculated rate constant for average vibration-translation energy transfer and that obtained in a laser fluorescence experiment. …”
    Journal article
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    Polyimide-based Carbon Membrane: Effect of Coating Times on Helium Separations by Muhamad Atif, Mohamed, Norazlianie, Sazali

    Published 2019
    “…Pure gas permeation tests were performed by single gas permeation test at room temperature and at 8 bars. Helium (He), and Nitrogen (N2) gas are used to investigate the transport mechanism in the carbon membrane separation process. …”
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    Article
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    Feasibility of a Helium Closed-Cycle Gas Turbine for UAV Propulsion by Emmanuel O. Osigwe, Arnold Gad-Briggs, Theoklis Nikolaidis

    Published 2020-12-01
    “…The study also investigates the feasibility of using helium closed-cycle gas turbines for UAV propulsion, highlighting the merits and demerits of helium closed-cycle gas turbines. …”
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    Article
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