Quantum Electronics and Laser Science Conference, 2001
For the first time a persistent spectral-hole burning stable at room temperature was realized in ... more For the first time a persistent spectral-hole burning stable at room temperature was realized in LiF crystals with F2- color centers. The Huang-Rhys factors and zero-phonon linewidth of F2- color centers were studied at 14-350 K temperature range.
Several strains of Staphylococcus aureus and Staphylococcus epidermidis, exhibiting characteristi... more Several strains of Staphylococcus aureus and Staphylococcus epidermidis, exhibiting characteristic resistance patterns to aminoglycoside antibiotics, were examined. The aminoglycoside-modifying enzymes from these strains were purified by DEAE-Sephadex A-50 chromatography, affinity chromatography, and Sephadex G-100 gel filtration. Three enzymes, a 3'-phosphotransferase III (molecular weight, 31,000; pI 4.1), a bifunctional enzyme having 6'-acetyltransferase and 2"-phosphotransferase (molecular weight, 56,000; pI 4.1) activity, and a 4'4"-adenylytransferase (molecular weight, 34,000; pI 4.7), were isolated from crude extracts of the resistant strains. Aminoglycoside-modifying enzymes with identical enzymatic properties derived from S. aureus and S. epidermidis were also immunologically identical.
... Incubation Temperature on the Microbiological and some Biochemical Qualities of Fermenting Er... more ... Incubation Temperature on the Microbiological and some Biochemical Qualities of Fermenting Ergo, a Traditional Ethiopian Sour Milk Mogessie Ashenafi Department ... ACKNOWLEDGEMENT The technical assistance of Haile Alemayehu and Tsigereda Bekele is acknowl-edged ...
Quantum Electronics and Laser Science Conference, 2001
For the first time a persistent spectral-hole burning stable at room temperature was realized in ... more For the first time a persistent spectral-hole burning stable at room temperature was realized in LiF crystals with F2- color centers. The Huang-Rhys factors and zero-phonon linewidth of F2- color centers were studied at 14-350 K temperature range.
Several strains of Staphylococcus aureus and Staphylococcus epidermidis, exhibiting characteristi... more Several strains of Staphylococcus aureus and Staphylococcus epidermidis, exhibiting characteristic resistance patterns to aminoglycoside antibiotics, were examined. The aminoglycoside-modifying enzymes from these strains were purified by DEAE-Sephadex A-50 chromatography, affinity chromatography, and Sephadex G-100 gel filtration. Three enzymes, a 3'-phosphotransferase III (molecular weight, 31,000; pI 4.1), a bifunctional enzyme having 6'-acetyltransferase and 2"-phosphotransferase (molecular weight, 56,000; pI 4.1) activity, and a 4'4"-adenylytransferase (molecular weight, 34,000; pI 4.7), were isolated from crude extracts of the resistant strains. Aminoglycoside-modifying enzymes with identical enzymatic properties derived from S. aureus and S. epidermidis were also immunologically identical.
... Incubation Temperature on the Microbiological and some Biochemical Qualities of Fermenting Er... more ... Incubation Temperature on the Microbiological and some Biochemical Qualities of Fermenting Ergo, a Traditional Ethiopian Sour Milk Mogessie Ashenafi Department ... ACKNOWLEDGEMENT The technical assistance of Haile Alemayehu and Tsigereda Bekele is acknowl-edged ...
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