Showing 521 - 540 results of 3,780 for search '"helium"', query time: 0.14s Refine Results
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    Helium-electrospray improves sample delivery in X-ray single-particle imaging experiments by Tej Varma Yenupuri, Safi Rafie-Zinedine, Lena Worbs, Michael Heymann, Joachim Schulz, Johan Bielecki, Filipe R. N. C. Maia

    Published 2024-02-01
    “…Here we present our modified electrospray ionization (ESI) source, which we dubbed helium-ESI (He-ESI). With it, we increased particle delivery into the interaction region by a factor of 10, for 26 nm-sized biological particles, and decreased the gas load in the interaction chamber corresponding to an 80% reduction in gas scattering when compared to the original ESI. …”
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    Effects of transition metal carbide dispersoids on helium bubble formation in dispersion-strengthened tungsten by Ashrakat Saefan, Xingyu Liu, Eric Lang, Levko Higgins, Yongqiang Wang, Osman El-Atwani, Jean Paul Allain, Xing Wang

    Published 2023-08-01
    “…Abstract The formation of helium bubbles and subsequent property degradation poses a significant challenge to tungsten as a plasma-facing material in future long-pulse plasma-burning fusion reactors. …”
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  8. 528

    Combustion characteristics of hydrogen direct injection in a helium–oxygen compression ignition engine by Norhidayah Mat Taib, Wan Mohd Faizal Wan Mahmood, Mohd Radzi Abu Mansor

    Published 2022-11-01
    “…This paper emphasizes the potential of helium–oxygen atmosphere for hydrogen combustion in CI engines and provides data on the engine configuration. …”
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    Exploring the isopycnal mixing and helium–heat paradoxes in a suite of Earth system models by A. Gnanadesikan, M.-A. Pradal, R. Abernathey

    Published 2015-07-01
    “…This paper uses a suite of Earth system models which simulate the distribution of He isotopes and radiocarbon to examine two paradoxes in Earth science, each of which results from an inconsistency between theoretically motivated global energy balances and direct observations. The helium–heat paradox refers to the fact that helium emissions to the deep ocean are far lower than would be expected given the rate of geothermal heating, since both are thought to be the result of radioactive decay in Earth's interior. …”
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  15. 535

    Investigation of the effect of air gap size on the spatial resolution in proton- and helium radio- and tomography by Stephan Radonic, Roger A. Hälg, Uwe Schneider

    Published 2022-02-01
    “…Using protons with E = 250 MeV a spatial resolution of about 1.1 mm and using helium ions (He-4) with E = 798 MeV even a spatial resolution below 0.7 mm respectively is attainable.…”
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  16. 536

    Effects of the solar wind termination shock and heliosheath on theheliospheric modulation of galactic and anomalous Helium by U. W. Langner, M. S. Potgieter

    Published 2004-09-01
    “…The effect of the solar wind termination shock on charge-sign dependent modulation, as is experienced by galactic cosmic ray Helium (He<sup>++</sup>) and anomalous Helium (He<sup>+</sup>), is the main topic of this work, and is complementary to the previous work on protons, anti-protons, electrons, and positrons. …”
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  17. 537

    MgB2 Josephson junctions produced by focused helium ion beam irradiation by L. Kasaei, T. Melbourne, V. Manichev, L. C. Feldman, T. Gustafsson, Ke Chen, X. X. Xi, B. A. Davidson

    Published 2018-07-01
    “…Planar magnesium diboride Josephson junctions are fabricated using focused helium ion beam irradiation. A single track of ion irradiation with a 30 kV He+ beam with nominal beam diameter < 0.5 nm is used to create a normal-metal barrier on a MgB2 film deposited by hybrid physical-chemical vapor deposition. …”
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  18. 538

    Helium Atmospheric Pressure Plasma Jet Source Treatment of White Grapes Juice for Winemaking by Ramona Huzum, Andrei Vasile Nastuta

    Published 2021-09-01
    “…Using the principles of dielectric barrier discharge, we power up an atmospheric pressure plasma jet in helium. This plasma is used for treatment of fresh must obtained from white grapes. …”
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    A fast iterative method for identifying the radiogenic source for the helium production-diffusion equation by Zhengqiang Zhang, Yuan-Xiang Zhang

    Published 2022-12-01
    “…In this paper, we consider an inverse source problem for the helium production-diffusion equation. That is to determine a space-dependent source term in the helium production-diffusion equation from a noisy final data. …”
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