Results 1 to 10 of about 405,545 (164)
Aerosol Transmission of the Pandemic SARS-CoV-2 and Influenza A Virus Was Blocked by Negative Ions [PDF]
Frontiers in Cellular and Infection Microbiology, 2022 The pandemic of respiratory diseases, such as coronavirus disease 2019 (COVID-19) and influenza, has imposed significant public health and economic burdens on the world.
Cheng Zhang +13 more
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Air Treatment by Negative Ions [PDF]
مجلة التربية والعلم, 2022 The research presents an effective and efficient mechanism for treating air and improving its specifications by designing and manufacturing a portable and small environmentally friendly device that works by an electric reactor to produce negative ions ...
Zaid Yuonis +3 more
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Positive and negative role of negative ions in cosmic exploration [PDF]
Vojnotehnički Glasnik, 2021 Introduction/purpose: At altitudes of 80 to 40 km, while the spacecraft made of duralumin without a thermal-protective coating was descending from the flight orbit at the first and second cosmic velocities, data were obtained on the increase in ...
Leonid I. Gretchikhin
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Explosion of the boundary layer upon entry of spacecraft into dense layers of the Earth's atmosphere [PDF]
Vojnotehnički Glasnik, 2020 Introduction/purpose: A supersonic flow around a sphere with a radius of 1m at altitudes of 80 to 40 km was analysed. Methods: The descent trajectory at the first cosmic velocity, similar to that of the Soyuz spacecraft with a duralumin structure ...
Leonid I. Gretchikhin
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MATHEMATICAL MODELING OF THE AEROION MODE IN A CAR [PDF]
Transport Problems, 2022 TRANSPORT PROBLEMS 2022 Volume 17 Issue 2 PROBLEMY TRANSPORTU DOI: 10.20858/tp.2022.17.2.02 Keywords: negative ions; car ionizer; mathematical modeling; comfort of car passengers Mykola BILIAIEV1 , Oleksandr PSHINKO2 , Tetiana RUSAKOVA 3 *, Viktoriia ...
Mykola BILIAIEV +4 more
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The air ionisation in Suceava Metropolitan Area [PDF]
Present Environment and Sustainable Development, 2023 This study is the first of its kind, conducted for a city and its surroundings, in Romania. The air ionisation monitoring for Suceava Metropolitan Area (SvMA) was carried out with the PC Connectable Highly Accurate Air Ion Counter Tester COM-3200PRO II ...
Alin PRISACARIU +3 more
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Chemical Reviews, 2017 Until a decade ago, the only anion observed to play a prominent role in astrophysics was H-. The bound-free transitions in H- dominate the visible opacity in stars with photospheric temperatures less than 7000 K, including the Sun. The H- anion is also believed to have been critical to the formation of molecular hydrogen in the very early evolution of ...
Millar, TJ, Walsh, C, Field, TA
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Influence of positive ions on the beamlet optics for negative-ion neutral beam injectors
Nuclear Fusion, 2023 Neutral beam injectors are based on the neutralization of ion beams accelerated at the desired energy. In the case of the ITER heating and diagnostic neutral beams, the target heating power translates into stringent requirements on the acceptable beamlet
A. Pimazzoni +3 more
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Experimental evaluation of a negative-ion source for a heavy-ion fusion negative-ion driver [PDF]
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005 Abstract Negative halogen ions have recently been proposed as a possible alternative to positive ions for heavy-ion fusion drivers because electron accumulation would not be a problem in the accelerator, and if desired, the beams could be photodetached to neutrals (Nucl. Instr. and Meth. A 464 (2001) 315; Fusion Sci. Technol.
Grisham, L. R. +4 more
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Ion-Pair Formation in Neutral Potassium-Neutral Pyrimidine Collisions: Electron Transfer Experiments
Frontiers in Chemistry, 2019 We report novel data on ion-pair formation in hyperthermal (30–800 eV) neutral potassium collisions with neutral pyrimidine (Pyr, C4H4N2) molecules. In this collision regime, negative ions formed by electron transfer from the alkali atom to the target ...
Mónica Mendes +8 more
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