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  • Physics  (3)
  • Aldose reductase  (2)
  • ESR  (2)
  • Life Sciences (general)  (2)
  • Magnetic resonance imaging  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Electron flow and heme-heme interaction between cytochromes b-558, b-595 and d in a terminal oxidase of Escherichia coli
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 893 (1987), S. 289-295 
    Details
    ISSN: 0005-2728
    Keywords: (E. coli) ; Carbon monoxide photolysis ; Cytochrome d complex ; ESR ; Respiration, bacterial ; Terminal oxidase
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2728(87)90050-8
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  • 2
    Electronic Resource
    Electronic Resource
    ESR studies on iron-sulfur clusters of complex II in Ascaris suum mitochondria which exhibits strong fumarate reductase activity
    Amsterdam : Elsevier
    FEBS Letters 242 (1988), S. 183-186 
    Details
    ISSN: 0014-5793
    Keywords: (Ascaris suum, Nematoda) ; Complex II ; ESR ; Fumarate reductase ; Iron-sulfur cluster
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(88)81012-3
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization of aldose reductase and aldehyde reductase from rat testis
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 996 (1989), S. 30-36 
    Details
    ISSN: 0167-4838
    Keywords: (Rat testis) ; Aldehyde reductase ; Aldose reductase ; Aldose reductase inhibitor
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0167-4838(89)90090-3
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  • 4
    Electronic Resource
    Electronic Resource
    Localization, isolation and properties of three NADPH-dependent aldehyde reducing enzymes from dog kidney
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 1078 (1991), S. 395-403 
    Details
    ISSN: 0167-4838
    Keywords: (Dog kidney) ; Aldehyde reductase ; Aldose reductase ; Aldose reductase inhibitor ; NADPH-dependent aldehyde reducing enzyme
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0167-4838(91)90162-S
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  • 5
    Electronic Resource
    Electronic Resource
    Magnetic resonance imaging of xanthomatous meningioma (1993)
    Springer
    Neuroradiology 35 (1993), S. 187-189 
    Details
    ISSN: 1432-1920
    Keywords: Brain neoplasm ; Meningioma ; Xanthomatous metaplasia ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A case of meningioma with extensive xanthomatous metaplasia occurring in the left frontal convexity of a 37-year-old woman is reported. The tumour was demonstrated as a hypodense mass with minimal enhancement on CT. Our findings suggest that magnetic resonance imaging may provide a clue to the diagnosis of meningiomas with extensive xanthomatous metaplasia when CT is less specific.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00588490
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  • 6
    Electronic Resource
    Electronic Resource
    Scalp cavernous angioma presenting as sinus pericranii: diagnostic value of cerebral angiography and magnetic resonance imaging (2000)
    Springer
    Child's nervous system 16 (2000), S. 598-602 
    Details
    ISSN: 1433-0350
    Keywords: Keywords Cavernous angioma ; Cerebral angiography ; Dynamic scan ; Magnetic resonance imaging ; Sinus pericranii
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Objects: Sinus pericranii is only a symptom complex, and it can have a variety of etiologies. Therefore, it is important to differentiate these etiologies preoperatively by means of radiological examinations. A 5-year-old boy was admitted with a soft and fluctuant tumor in the right parietal region near the midline. The tumor appeared when the child was in a recumbent position, distending noticeably with the Valsalva maneuver and disappearing completely when the patient was in the sitting position. Methods: Magnetic resonance imaging showed the lesion with honeycomb-like heterogeneous iso- and low-intensity signals on the T1-weighted image and with heterogeneous high- and iso- intensity signal on the T2-weighted image. Dynamic study with an injection of gadolinium diethylene-triaminopentaacetic acid demonstrated and nodular peripheral enhancement at early phase and subsequent progressive enhancement towards the center of tumor. The internal carotid angiogram was normal. The external carotid angiogram, however, showed a tumor stain fed by the superficial temporal arteries. The stain was retained until the late phase and drained into the scalp veins and into the superior sagittal sinus. Following direct injection of contrast medium into the tumor there was prolonged retention of the medium in the tumor and leakage into scalp veins and the superior sagittal sinus. The mass under the periosteum was totally removed and proved to be a cavernous angioma. Conclusions: Scalp cavernous angioma is one of the etiologies of sinus pericranii and may be diagnosed preoperatively by cerebral angiography or magnetic resonance imaging. Serial dynamic magnetic resonance imaging will be particularly helpful for this diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003810000288
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  • 7
    Electronic Resource
    Electronic Resource
    Rheo-optical studies of the nature of the α mechanical loss mechanism of polyethylene (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 11 (1973), S. 1891-1939 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Dynamic x-ray diffraction and dynamic birefringence techniques are employed to determine the nature of the molecular motions associated with the α mechanical loss processes for low-density polyethylene. The results indicate that the low-temperature part of this loss (designated α1) is associated with an interlammellar “grain boundary” slip process while the higher temperature process (α2) involves intracrystalline motion and plasticity of the crystal itself. The activation energy for α1 determined by x-ray response is 25-30 kcal/mole, while that for α2 is 30-60 kcal/mole. The findings are consistent with dynamic infrared and dynamic light-scattering results which indicate that the motion of amorphous chains is closely correlated with that of the crystals. The relative contributions of amorphous and crystalline regions to the birefringence are dependent on the thermal treatment of the sample. The effect of static strain on the dynamic response indicates that crystal orientability is first increased with strain, probably because of splaying apart of lamellae, is subsequently decreased because of the restrictions of interlamellae tie chains, but then increases again as the spherulites are destroyed at high strain. The static strain reduces the orientability of amorphous regions.
    Additional Material: 29 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.180111004
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  • 8
    Electronic Resource
    Electronic Resource
    Peroxisomes of alkane-utilizing yeasts metabolic functions and practical aspectsPaper given at the Leipzig Symposium on Biotechnology 1982 Leipzig 21.-25. 9. 1982. (1983)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 3 (1983), S. 327-337 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: One of the most striking features of alkane-grown yeast cells is conspicuous appearance of peroxisomes in harmony with a high level of catalase. This unique phenomenon was first demonstrated in the authors′ laboratory, and the metabolic functions of peroxisomes in yeasts utilizing alkanes has been estabilished with intact peroxisomes isolated by density gradient centrifugation. The organelles participate in the degradation of fatty acids derived from alkanes to C2-units and the synthesis of gluconeogenic intermediates from C2-units. The abundant appearance of peroxisomes in alkane-utilizing cells has allowed successful production of several useful enzymes including catalase, D-amino acid oxidase, uricase, acyl-CoA oxidase etc. Yeast cells will be an excellent system for investigation the functions and development of peroxisomes because biogenesis of the organelles is induced only by transferring the cells into alkane medium from glucose or ethanol medium.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370030405
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  • 9
    Electronic Resource
    Electronic Resource
    Bioconversion of lipophilic compounds by immobilized microbial cells in organic solvents (1981)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 1 (1981), S. 339-350 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Microbial cells were gel-entrapped with photo-crosslinkable resin prepolymers or urethane prepolymers, respectively. The resulting gels have different tailor-made hydrophobic or hydrophilic character. They were used for successful bioconversion of hydrophobic steroids and terpenoids in watersaturated mixtures of organic solvents. The experiments show the influence of the hydrophobicity of the gels and the polarity of the solvent mixtures, respectively. Use of hydrophobic gels and less polar solvents is preferable for bioconversion of hydrophobic compounds. The selective formation of a desired product among diverse products from a single substrate by appropriate use of hydrophobic or hydrophilic gels is possible. In each case, tests should be made to select the appropriate gel and solvent mixture. Bioconversions tested are: dehydroepiandrosterone to 4-androstene-3,17-dione; cholesterol to cholestenone; β-sitosterol to β-sitostenone; stigmasterol to stigmastenone; pregnenolone to progesterone; testosterone to Δ1-dehydrotestosterone or 4-androstene-3,17-dione, respectively; all with immobilized cells of Nocardia rhodocrous; and stereoselective hydrolysis of dl-menthyl-succinate to yield l-menthol with immobilized cells of Rhodotorula minuta var. texensis.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370010406
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  • 10
    Electronic Resource
    Electronic Resource
    Copolymerization of tetraoxane with styrene catalyzed by BF3·O(C2H5)2 (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 5 (1967), S. 1937-1949 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The copolymerization of tetraoxane with styrene catalyzed by BF3·O(C2H5)2 was studied at 30°C. to determine whether a cyclic monomer can copolymerize with a vinyl monomer. The formation of the copolymer was confirmed by elementary analysis of both benzene-soluble and benzene-insoluble fractions of the polymer obtained. It was found by gas chromatography that a fairly large amount of 4-phenyl-1,3-dioxane and a small amount of trioxane were formed in the present system, in addition to polymers. Roughly a third of the total amount of the monomers reacted was consumed in the formation of methanol-insoluble polymer, a third for 4-phenyl-1,3-dioxane, and another third for trioxane and unknown products which could not be indentified. The formation of these cyclic compounds during the copolymerization may be explained in terms of a back-biting (or intramolecular transacetalization) reaction. The cationic reactivity of tetraoxane was found to be similar to that of styrene on the basis of both the consumption rate of each monomer in the copolymerizing system and the composition of the methanol-insoluble polymer obtained.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.150050811
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