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Sökning: WFRF:(Masich Sergej) > (2020-2022)

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1.
  • Liu, Lianlian, 1988-, et al. (författare)
  • Black Charcoal for Green and Scalable Wooden Electrodes for Supercapabatteries
  • 2022
  • Ingår i: Energy Technology. - : Wiley-VCH Verlag GMBH. - 2194-4288 .- 2194-4296. ; 10:3
  • Tidskriftsartikel (refereegranskat)abstract
    • A green, though black, sustainable and low-cost carbon material-charcoal produced from wood-is developed for electricity storage. Charcoal electrodes are fabricated by ball-milling charcoal and adding protein nanofibril binders. The charcoal electrode presents a capacitance of 360 F g(-1) and a conductivity of 0.2 S m(-1). A pair of redox peaks is observed in the cyclic voltammetry and assigned to originate from quinone groups. Compared with other wooden electrodes, these charcoal electrodes display better cycling stability with 88% capacity retention after 1000 cycles. Their discharge capacity is 2.5 times that of lignosulfonate/graphite hybrid electrodes.
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2.
  • Narangifard, Ali, et al. (författare)
  • Molecular Reorganization during the Formation of the Human Skin Barrier Studied In Situ
  • 2021
  • Ingår i: Journal of Investigative Dermatology. - : Elsevier BV. - 0022-202X .- 1523-1747. ; 141:5, s. 1243-1253
  • Tidskriftsartikel (refereegranskat)abstract
    • In vertebrates, skin upholds homeostasis by preventing body water loss. The skin's permeability barrier is located intercellularly in the stratum corneum and consists of stacked lipid lamellae composed of ceramides, cholesterol, and free fatty acids. We have combined cryo-electron microscopy with molecular dynamics modeling and electron microscopy simulation in our analysis of the lamellae's formation, a maturation process beginning in stratum granulosum and ending in stratum corneum. Previously, we have revealed the lipid lamellae's initial- and end-stage molecular organizations. In this study, we reveal two cryo-electron microscopy patterns representing intermediate stages in the lamellae's maturation process: a single-band pattern with 2.0-2.5 nm periodicity and a two-band pattern with 5.5-6.0 nm periodicity, which may be derived from lamellar lipid structures with 4.0-5.0 nm and 5.5-6.0 nm periodicity, respectively. On the basis of the analysis of the data now available on the four maturation stages identified, we can present a tentative molecular model for the complete skin barrier formation process.
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