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Sökning: WFRF:(Mansson A)

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31.
  • Thomberg, T., et al. (författare)
  • The anti SARS-CoV-2 activity of nanofibrous filter materials activated with metal clusters
  • 2023
  • Ingår i: ATMOSPHERIC ENVIRONMENT-X. - : Elsevier BV. - 2590-1621. ; 17
  • Tidskriftsartikel (refereegranskat)abstract
    • Nanofibrous filter materials were prepared by electrospinning a solution of 28 wt% poly(vinylidene fluoride) in N,N-dimethylacetamide with and without the addition of 2 wt% AgNO3, Cu(NO3)(2)center dot 2.5H(2)O or ZnCl2. X-ray diffraction, scanning electron microscopy with energy dispersive X-ray spectroscopy, inductively coupled plasma mass spectroscopy, thermogravimetric analysis, contact angle measurement, nitrogen sorption, and mercury intrusion porosimetry methods were used for the characterization of physical structure as well as the chemical composition of the electrospun materials. Particle filtration efficiency and antiviral activity against the SARS-CoV-2 alpha variant were tested in order to estimate the suitability of the prepared electrospun filter mate-rials for application as indoor air filtration systems with virucidal properties. All filter materials prepared with salts demonstrated very high particle filtration efficiency (>= 98.0%). The best antiviral activity was demonstrated by a material containing Cu(NO3)(2)center dot 2.5H(2)O in the spinning solution, which displayed the decrease in the number of infectious virions by three orders of magnitude after a contact time of 12 h. Materials with the addition of AgNO3 and ZnCl2 decreased the number of infectious virions after the same contact time by only-8 and-11 times, respectively.
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  • Berntsen, Magnus H., et al. (författare)
  • A spin- and angle-resolving photoelectron spectrometer
  • 2010
  • Ingår i: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 81:3
  • Tidskriftsartikel (refereegranskat)abstract
    • A new type of hemispherical electron energy analyzer that permits angle and spin resolved photoelectron spectroscopy has been developed. The analyzer permits standard angle resolved spectra to be recorded with a two-dimensional detector in parallel with spin detection using a mini-Mott polarimeter. General design considerations as well as technical solutions are discussed and test results from the Au(111) surface state are presented.
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  • Resultat 31-40 av 118

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