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NEW CHITOSAN WOUND DRESSING – FIRST STEP - THE CYTOTOXICITY EVALUATION

100%
Karuga E., Zając A., Rybak Z., Hanuza J.
Progress on Chemistry and Application of Chitin and its Derivatives
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2015
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vol. 20
97-109
EN
The cytotoxicity of chitosan with polyvinox (PCH) and crosslinked chitosan (CH) was studied and analyzed. Cell viability was determined by thiazolyl blue formazan (MTT) assay and cell morphology observations were carried out during cell culturing and MTT tests. Crosslinked chitosan was used as a protective foil (scaffold) for skin wounds. Studies in vitro and the other obtained in this work results prove that the studied materials CH and PCH do not cause cytotoxic activity to Balb 3T3 mouse fibroblasts. CH and PCH are promising biomaterials with prospective application as wound healing dressings.
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EPR and optical properties of KYb(WO4)2 and KTb0.2Yb0.8(WO4)2 single crystals

76%
Kaczmarek S., Macalik L., Fuks H., Leniec G., Skibiński T., Hanuza J.
Open Physics
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2012
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vol. 10
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issue 2
492-499
EN
Well oriented KYb(WO4)2 and KTb0.2Yb0.8(WO4)2 single crystals have been investigated for their magnetic and optical properties using the Raman and EPR techniques. The registered EPR signal is dominated by three lines ascribed to ytterbium ions: one main and two satellites. Tb ions, although non-paramagnetic, distinctly modify magnetic properties of the KYb(WO4)2 single crystal. Basic parameters of the spin Hamiltonian, including Zeeman and hyperfine terms (g and A matrices) as well the spatial orientation between principal and crystallographic axes systems were determined for both crystals.
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Synthesis and spectroscopic properties of LiIn(WO4)2 nanopowders and single crystals doped with chromium(III) ions

64%
Skibiński T., Fuks H., Kaczmarek S., Bodziony T., Hermanowicz K., Maczka M., Ptak M., Hanuza J.
Open Physics
|
2013
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vol. 11
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issue 11
1559-1566
EN
LiIn(WO4)2 single crystals and nanopowders doped with chromium(III) ions were synthesized and investigated, including their EPR spectra and magnetic properties. The EPR spectra have shown low and high field lines attributed to isolated chromium ions with an electron spin S=3/2 and complex chromium centers with higher spin value, respectively. Magnetic susceptibility measurements revealed an almost linear dependence on the magnetic field. The electron resonance and magnetic properties have been related to the structural and spectroscopic data of the studied material.
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