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  • Chemistry  (10)
  • Aldose reductase  (2)
  • Aldose reductase inhibitor  (2)
  • Magnetic resonance imaging  (2)
  • 1
    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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  • 2
    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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  • 3
    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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  • 4
    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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  • 5
    Electronic Resource
    Electronic Resource
    Microbiological studies on the formation of gramicidin S synthetases (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 129-142 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Rapid and extensive growth of Bacillus brevis ATCC 9999 was obtained in a complex medium containing yeast extract and peptone. Gramicidin S (GS) production in this medium reached 2.5 g/liter and 0.25 g/g dry cell weight. GS synthetase I production was also high in this complex medium. Chemically defined media were also developed for this strain. In a glycerol-ammonium sulfate-Tris-salts medium, the culture grew about 40% as well (rate and extent) as in complex medium. Although GS production was low (0.23 g GS/liter), peak specific activity of GS synthetase I was as high as on complex medium. Nutritional experiments showed that growth was stimulated by glutamine, methionine, proline, arginine, and histidine. Addition of these amino acids almost doubled the rate and extent of growth and GS production on a volumetric basis. However the increase in GS was due merely to the increased cell density; GS synthetase I specific activity was in fact decreased by the supplement. Complex medium is better than defined medium for GS and GS synthetase production due to increased cell density and a slower rate of synthetase disappearance.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260170111
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrasonic velocity and attenuation of polymeric solids under oscillatory deformation: Apparatus and preliminary results (1989)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 29 (1989), S. 1124-1130 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A new apparatus has been constructed in which ultrasonic velocity and attenuation coefficients can be measured under oscillatory deformation. Using this apparatus, dynamic ultrasonic parameters were obtained with sufficient accuracy to investigate plastic deformation directly. It is found that this method has potential as a new tool for the study of solid polymers during deformation.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760291609
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of dynamic density by simultaneous measurement of ultrasonic velocity and elastic modulus under oscillatory deformation (1989)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 29 (1989), S. 1131-1135 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: It is proposed that dynamic density can be estimated from simultaneous measurements of ultrasonic velocity and modulus under an oscillatory deformation. An experimental investigation was carried out and a theoretical model applied. Preliminary experiments show that measurement of the dynamic density is a major aid to the study of plastic deformation.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760291610
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  • 8
    Electronic Resource
    Electronic Resource
    Experimental detection of entropy elasticity within the plasic deformation of paper (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 53 (1994), S. 1125-1127 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070530816
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  • 9
    Electronic Resource
    Electronic Resource
    Evaluation of correction accuracy of several schemes for AES matrix effect correctionsPaper presented at ECASIA 89, Antibes, France, 23-27 October 1989. (1990)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 15 (1990), S. 466-472 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A matrix effect correction is required to improve the accuracy of quantitative AES analysis. The correction includes terms involving the atomic density (n), electron back-scattering factor (R) and electron escape depth (L). Many schemes have been proposed by various people for corrections of the R and L terms. However, up to now, there have been no systematic investigations of the correction accuracy of the proposed schemes. We have evaluated the correction accuracy, based on measured intensity data for Au—Cu alloys of different compositions. Comparison was made between the observed intensity ratio K (=Iunk/Istd) and the calculated intensity, ratio K′ (= C(nunk/nstd)(Runk/Rstd)(Lunk/Lstd)), where C and I represent the concentration and intensity, respectively. The superscripts ‘unk’ and ‘std’ denote that the parameters are for unknown and standard specimens, here the pure elements. If the correction works well, the error Er (= K′ — K)/(K) will become smaller. Evaluations were carried out on three schemes for the R correction and on seven schemes for the L correction using the Au 239 eV, Au 2024 eV and Cu 920 eV transitions. The root mean square (RMS) of the calculated errors showed several per cent for the best case and 20-30% for the worst case. The RMS error varied a few per cent between schemes for the R correction but it varied ∼30% for the L correction.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740150805
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  • 10
    Electronic Resource
    Electronic Resource
    The reliability of quantitative analysis with AES (1990)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 16 (1990), S. 140-143 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The Japanese VAMAS-SCA working group is composed of 19 institutes. Three kind of Au—Cu alloys (Au 75 at.-%-Cu 25 at.-%, Au 50 at.-%-Cu 50 at.-%, Au 25 at.-%-Cu 75 at.-%) were prepared, and these specimens, pure Au and pure Cu were distributed to the members of the VAMAS-SCA working group. The surface concentrations of these alloys were calculated from the Auger peak amplitudes in two ways. One method used the published relative sensitivity factors, and the other used pure Au and Pure Cu as the standard materials. The mean values of the surface concentrations calculated with the published relative sensitivity factors were almost the same as those calculated with the standard materials. This means that the published relative sensitivity factors are reliable to some extent. The error of the surface concentration calculated with pure Au and pure Cu as the standard materials lay between about 3% and 10%, and that with the relative sensitivity factors lay between about 7% and 20%. The calculated surface concentrations of Au were larger than the bulk concentrations of Au when the matrix effect was neglected.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740160127
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