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  • 1985-1989  (9)
  • Chemistry  (7)
  • Glomerulus  (2)
  • Angiotensin II  (1)
  • Biochemistry and Biotechnology  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Glomerular ultrastructure of the trout, Salmo gairdneri: Effects of angiotensin II and adaptation to seawater (1987)
    Springer
    Cell & tissue research 249 (1987), S. 437-442 
    Details
    ISSN: 1432-0878
    Keywords: Angiotensin II ; Glomerulus ; Salmo gairdneri ; Seawater-adaptation ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of angiotensin infusion on the glomerular ultrastructure of freshwater- and seawater-adapted rainbow trout, Salmo gairdneri, has been examined by scanning and transmission electron microscopy. Adaptation of trout to seawater resulted in epithelial podocyte flattening, primary process broadening and apparent loss of foot processes in almost all glomeruli, features which were uncommon in freshwater-adapted trout. Similar changes were induced by infusion of freshwater-adapted animals with angiotensin, suggesting that the renin-angiotensin system plays a role in the modification of glomerular epithelial ultrastructure. Adaptation of trout to seawater also reduced glomerular diameter, but infusion of freshwater-adapted animals with angiotensin did not mirror this effect. Infusion of angiotensin into seawater-adapted animals increased the overall thickness of glomerular basement membrane by increasing the lamina rara interna and lamina densa. This did not occur when freshwater-adapted fish were either infused with angiotensin or adapted to seawater. These findings suggest that other humoral systems are involved in the control of glomerular diameter and basement membrane thickness as part of an integrated response to increased environmental salinity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00215528
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Glomerular bypass shunts in the kidney of the Atlantic hagfish, Myxine glutinosa (1988)
    Springer
    Cell & tissue research 253 (1988), S. 377-381 
    Details
    ISSN: 1432-0878
    Keywords: Glomerulus ; Renal circulation ; Vascular casts ; Microcorrosion casts ; Glomerular bypass shunts ; Myxine glutinosa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The vascular pathways associated with the glomerulus of the Atlantic hagfish, Myxine glutinosa have been studied by scanning electron microscopy of corroded resin casts of the vasculature. Although the overall pattern of the renal vasculature did not differ from earlier reports, a previously unreported vascular pathway which arose from the renal artery and bypassed the glomerular capillaries in 28% of glomeruli was clearly demonstrated. Glomerular bypass shunts either ran to join the loose capillary network around Bowman's capsule and thereby drain into the network of vessels associated with the mesonephric duct (ureter), or ran directly into the ureteral system of vessels and subsequently into the posterior cardinal veins. Glomerular bypass shunts which theoretically permit renal arterial blood to bypass the process of filtration may play a role in the regulation of body fluid volume.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00222294
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The effect of hydrogen chloride on the corrosion of an FeCrAlY alloy in simulated coal gasifier atmospheres (1989)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 40 (1989), S. 175-181 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Einfluß von Chlorwasserstoff auf die Korrosion einer FeCrAlY-Legierung in einer simulierten KohlevergasungsatmosphäreEie Chrom-Aluminium-Yttrium-Stahl wurde einer simulierten Kohlevergasungsatmosphäre ausgesetzt die 1000 ppm bzw. 2200 ppm Chlorwasserstoff enthielt und deren Temperatur 450 °C betrug. Durch Erhöhen des Chlorwasserstoffgehalts werden die Reaktionsgeschwindigkeit erhöht und die Mikrostruktur sowie die Zusammensetzung des Korrosionsprodukts beträchtlich verändert. Für diese Ergebnisse werden versuchsweise Mechanismen postuliert, nach denen Metallchloride über die Gasphase transportiert werden.
    Notes: An iron chromium aluminium yttrium steel was exposed to a simulated coal gasifier atmosphere containing 1000 ppm and 2200 ppm hydrogen chloride at 450 °C. Increasing hydrogen chloride content was found to accelerate reaction rates, and significantly alter the microstructure and composition of the corrosion product. Tentative explanations for these results, involving vapour phase transport of metal chlorides are proposed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19890400312
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Soluble polymeric carriers for drug delivery. Part I: Free radical copolymerization of N-(2-hydroxypropyl) methacrylamide with N-[2-(4-hydroxyphenyl) ethyl]acrylamide (1989)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 27 (1989), S. 515-525 
    Details
    ISSN: 0887-6258
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1989.140271302
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  • 5
    Electronic Resource
    Electronic Resource
    Reactions on thin films of cobalt-molybdenum oxides: II. Reduction, sulphidation and hydrodesulphurization (HDS) activities (1986)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 9 (1986), S. 255-257 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740090416
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  • 6
    Electronic Resource
    Electronic Resource
    Reactions on thin films of cobalt-molybdenum oxides: I. characterization of molybdenum and cobalt oxide species by high resolution XPS (1986)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 9 (1986), S. 253-254 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740090415
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Scanning ion imaging as a diagnostic tool for an ion microscope (1985)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 7 (1985), S. 74-78 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: A scanning system has been installed on a Cameca IMS 3f ion microscope. The system has been invaluable for alignment of secondary ion extraction to the centre of the crater during depth profiling, detection of inclusions and lateral inhomogeneities during depth profiling and compensation of charging of insulators using an electron flood gun. Limitations of the standard gun have become apparent.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740070204
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Stabilization of charge on electrically insulating surfaces during SIMS experiments - experimental and theoretical studies of the specimen isolation method (1985)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 7 (1985), S. 275-281 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Recent experiments have shown that secondary ion mass spectrometric (SIMS) measurements of insulator surfaces can be greatly facilitated by the use of a charged aperture located immediately above the analysis area (the ‘specimen isolation technique’). This allows the surface potential within the aperture area to be stabilized. Charging is stabilized when the potential difference between the surface and the aperture becomes large enough that excessive charge, in the form of secondary electrons, is drained away from the surface to the aperture. The potential difference generated on such insulating surfaces can be measured experimentally by varying the voltages applied to the electrostatic analyzer to measure the secondary ion intensity as a function of kinetic energy. Such measurements have been carried out on a Cameca IMS-3F instrument for a range of aperture dimensions and for different primary and secondary ions. The surface potential can be stabilized at a potential readily measurable by the electrostatic analyzer for both O- and Cs+ ion beams. The mechanism for this stabilization has been analyzed through calculations of two dimensional contours for the region around the specimen holder. For surfaces with a very high charging potential (〉600 V), potential wells which can trap ions of low kinetic energy develop near the surface. Element and oxide secondary ion kinetic energy distribution curves, taken under specimen isolation conditions, which differ from those obtained under normal non-charging SIMS conditions, are evidence for such ion trapping.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740070605
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  • 9
    Electronic Resource
    Electronic Resource
    Letter to the Editor (1986)
    Weinheim : Wiley-Blackwell
    Electrophoresis 7 (1986), S. 239-239 
    Details
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.1150070513
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    Paper (German National Licenses)
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