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  • Chemistry  (10)
  • Lens  (3)
  • Aminopeptidase  (2)
  • Ascorbate  (2)
  • Fibre types  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Lens proteasome shows enhanced rates of degradation of hydroxyl radical modified alpha-crystallin
    Amsterdam : Elsevier
    Free Radical Biology and Medicine 8 (1990), S. 217-222 
    Details
    ISSN: 0891-5849
    Keywords: Aging ; Alpha-crystallin ; Eye ; High molecular weight protease ; Irradiation ; Lens ; Macroxyproteinase (M.O.P.) ; Oxidation ; Oxidative stress ; Proteolysis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0891-5849(90)90066-R
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  • 2
    Electronic Resource
    Electronic Resource
    Delay of uv-induced eye lens protein damage in guinea pigs by dietary ascorbate
    Amsterdam : Elsevier
    Journal of Free Radicals in Biology & Medicine 2 (1986), S. 275-281 
    Details
    ISSN: 0748-5514
    Keywords: Aging ; Aminopeptidase ; Ascorbate ; Cataract ; Eye lens ; Nutrition ; Ultraviolet light
    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/S0748-5514(86)80010-1
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  • 3
    Electronic Resource
    Electronic Resource
    Bovine lens epithelial cells have a ubiquitin-dependent proteolysis system
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Molecular Cell Research 1175 (1993), S. 181-187 
    Details
    ISSN: 0167-4889
    Keywords: Damaged or obsolete protein turnover ; Lens ; Proteolysis ; Ubiquitin
    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/0167-4889(93)90021-G
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  • 4
    Electronic Resource
    Electronic Resource
    Measures of leucine aminopeptidase can be used to anticipate UV-induced age-related damage to lens proteins: Ascorbate can delay this damage
    Amsterdam : Elsevier
    Mechanisms of Ageing and Development 41 (1987), S. 39-46 
    Details
    ISSN: 0047-6374
    Keywords: Aminopeptidase ; Ascorbate ; Cataract ; Lens ; Proteases ; Protein damage ; Ultraviolet light ; Vitamin C
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0047-6374(87)90052-2
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  • 5
    Electronic Resource
    Electronic Resource
    Skeletal muscle fibre size adaptation to an eight-week swimming programme (1980)
    Springer
    European journal of applied physiology 44 (1980), S. 161-165 
    Details
    ISSN: 1439-6327
    Keywords: Swimming training ; Triceps brachii muscle ; Muscle fibre size ; Fibre types
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To evaluate the effects of short-term physical training on muscle fibre size, seven males were submitted to an eight-week swimming programme. Biopsy samples from the triceps brachii muscle were obtained before and after the training period, and compared with controls. After training, free swimming maximal oxygen uptake was significantly higher in the exercised subjects (3.61 to 3.76 l·min−1), whereas the type I fibre distribution in the triceps was not affected (45.5 vs 44.6%). However, a significant increase in type II fibre area was observed (23.8%) and the type II/type I fibre area ratio increased from 1.63 to 1.83 with training. Muscle succinate dehydrogenase and phosphofructokinase activities were not significantly affected by the training programme. No significant changes were observed in the control group. It is concluded that type II fibres are recruited preferentially during a short-term swim-training programme.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00421094
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  • 6
    Electronic Resource
    Electronic Resource
    Comparison of the histochemical and contractile properties of human triceps surae (1988)
    Springer
    European journal of applied physiology 58 (1988), S. 165-170 
    Details
    ISSN: 1439-6327
    Keywords: Human triceps surae ; Fibre types ; Contractile properties
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Contractile and histochemical properties of the triceps surae were compared in 16 males and 4 females aged 20 to 49 years. Surface electrical stimulation was used to determine twitch, tetanic and fatigue parameters. From these tests, twitch tension (Pt), time to peak tension (TPT), half relaxation time 1/2 RT), tetanic tensions at 10, 20 and 50 Hz and an index of fatigue (FI) were calculated. A maximal voluntary contraction (MVC) was also performed. Muscle samples from the belly of the lateral gastrocnemius were obtained using the needle biopsy technique. The samples were treated histochemically for myosin ATPase and NADH-tetrazolium reductase in order to classify the fibres as either Type I, slow twitch (ST) or Type II, fast twitch (FT) and to determine fibre areas. Correlations were performed between the grouped male and female contractile and histochemical variables. The results demonstrated significant positive relationships between percentage of ST fibres (%ST) and TPT (r=0.49), and %ST and the ratio of tetanic forces at 10 Hz to 50 Hz (Po10/Po50) (r=0.55). No significant relationships were obtained for Pt, 1/2 RT, MVC or FI with any histochemical parameter. The results suggest that fibre type distribution determined using myosin ATPase is related to electrically stimulated isometric contractile speeds and not to voluntary force generation (MVC) or electrically induced fatigue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00636621
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  • 7
    Electronic Resource
    Electronic Resource
    Studies of lipase-catalyzed polyesterification of an unactivated diacid/diol system (1998)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 36 (1998), S. 2069-2079 
    Details
    ISSN: 0887-624X
    Keywords: Candida antarctica lipase ; Novozym 435® ; polyester ; enzymatic polymerization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Preliminary enzymatic polymerization studies in the simple stoichiometric adipic acid/butane-1,4-diol system using lipase B from Candida antarctica, immobilized as Novozym 435®, suggest that in solvent-free conditions a step-growth mechanism operates involving the sequential addition of an AB synthon by esterification mode only. Conversely, in toluene as solvent there is a change to the more facile transesterification mode in line with the conventional polyesterification procedure, pointing to a change in specificity of the lipase. Evidence is drawn from qualitative studies using a series of synthetic intermediates, enabling authentication of product mixtures together with an indication of the comparative reactivity of species along the proposed reaction pathway. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 2069-2080, 1998
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 8
    Electronic Resource
    Electronic Resource
    The determination of sugars by high performance liquid chromatography using a novel bonded phase column and selective post column colorimetric detection (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 290-292 
    Details
    ISSN: 0935-6304
    Keywords: Liquid chromatography, HPLC ; Post column, colorimetric detection ; Sugars ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080604
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  • 9
    Electronic Resource
    Electronic Resource
    Turbulent dispersion in drag-reducing fluids (1974)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 20 (1974), S. 454-461 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Turbulent pipe flow was examined by measuring the radial dispersion of dyed fluid introduced at an axial point source within the flow. From the classical theoretical results of G. I. Taylor it was possible thereby to calculate various parameters that characterize the structure of the turbulent flow field. A comparison was made between water, and aqueous solutions of polyethylene oxide (Polyox) at concentrations up to 50 ppm (by weight). Results indicate that Polyox affects the turbulence in the following ways: (1) intensity is reduced, (2) the energy spectrum is shifted toward low frequency, (3) dispersion occurs largely through large scale motion, and intermittency is increased. Indication is also seen that a simple exponential form for the Lagrangian correlation coefficient is superior to other often recommended models.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690200304
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  • 10
    Electronic Resource
    Electronic Resource
    In situ studies of epitaxial silicon growth by gas source molecular beam epitaxy (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Advanced Materials for Optics and Electronics 7 (1997), S. 215-224 
    Details
    ISSN: 1057-9257
    Keywords: silicon ; epitaxy ; kinetics ; dynamics ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: The value of in situ monitoring to study growth dynamics and surface reaction kinetics in a gas source molecular beam epitaxy process is illustrated with reference to the growth of Si films on Si(001) substrates using a beam of disilane (Si2H6). By using a combination of reflection high-energy electron diffraction (RHEED) and reflection anisotropy spectroscopy (RAS), we show first how morphological (long-range order) and local electronic structure effects can be separated in the evaluation of growth dynamics. This involves the measurement of step density changes by RHEED concomitantly with the variation in domain coverage on the Si(001) (2×1)+(1×2) reconstructed surface by RAS. This approach is then extended to investigate the kinetics of hydrogen desorption, which is the rate-limiting step in Si growth from Si2H6. It is shown that over a significant temperature range, zeroth-order kinetics are obeyed and this is explained on the basis of a step-mediated desorption process. Finally we show how this influences the growth rate on substrates of differing degrees of vicinality. © 1997 John Wiley & Sons, Ltd.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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