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  • 1
    Electronic Resource
    Electronic Resource
    Comparison of color, chemical and mineralogical compositions of mine drainage sediments to pigment (1999)
    Springer
    Environmental geology 37 (1999), S. 243-254 
    Details
    ISSN: 1432-0495
    Keywords: Key words Mine drainage ; Sediments ; Mineralogy ; Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  Forty-three untreated and actively and passively (wetland) treated coal mine drainage sediments and five yellow-red pigments were characterized using X-ray fluorescence, fusion-inductively coupled plasma atomic emission spectroscopy, X-ray diffraction, and tristimulus colorimeter. Primary crystalline iron-bearing phases were goethite and lepidocrocite, and iron phases converted to hematite upon heating. Quartz was nearly ubiquitous except for synthetic pigments. Gypsum, bassinite, calcite, and ettringite were found in active treatment sediments. Iron concentrations from highest to lowest were synthetic pigment〉wetland sediment〉natural pigment〉active treatment (untreated sediments varied more widely), and manganese was highest in actively treated sediments. Loss on ignition was highest for passively treated sediments. No clear trends were observed between quantified color parameters (L*, a*, b*, and Redness Index) and chemical compositions. Because sediments from passive treatment are similar in chemistry, mineralogy, and color to natural pigments, the mine drainage sediments may be an untapped resource for pigment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002540050382
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  • 2
    Electronic Resource
    Electronic Resource
    Reduced binding of epidermal growth factor by avian sarcoma virus-transformed rat cells
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 113 (1983), S. 678-686 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(83)91780-1
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  • 3
    Electronic Resource
    Electronic Resource
    Phosphorylation of the M"r = 34,000 protein in normal and Rous sarcoma virus-transformed rat fibroblasts
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 109 (1982), S. 434-441 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(82)91740-5
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  • 4
    Electronic Resource
    Electronic Resource
    Purification of denatured epidermal growth factor-receptor from A431 human epidermoid carcinoma cells
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 228 (1984), S. 621-626 
    Details
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-9861(84)90031-6
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  • 5
    Electronic Resource
    Electronic Resource
    Cell volume is a major determinant of proteolysis control in liver
    Amsterdam : Elsevier
    FEBS Letters 283 (1991), S. 70-72 
    Details
    ISSN: 0014-5793
    Keywords: Bumetanide ; Cell volume ; Cyclic AMP ; Glucagon ; Glutamine ; Glycine ; Hormone action ; Insulin ; Intracellular water space ; Perfused liver ; Proteolysis
    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(91)80556-I
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  • 6
    Electronic Resource
    Electronic Resource
    Alkaline earth oxide nanoparticles as destructive absorbents for environmental toxins (1999)
    Chester : International Union of Crystallography (IUCr)
    Journal of synchrotron radiation 6 (1999), S. 604-606 
    Details
    ISSN: 1600-5775
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0909049599001739
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  • 7
    Electronic Resource
    Electronic Resource
    Growth plate pathology in feline mucopolysaccharidosis VI (1995)
    Springer
    Calcified tissue international 57 (1995), S. 185-190 
    Details
    ISSN: 1432-0827
    Keywords: Dysostosis ; Feline ; Lysosomal ; Mucopolysaccharidosis ; Storage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract The mucopolysaccharidoses (MPS) are a family of lysosomal storage diseases that result from the accumulation of partially catabolized glycosaminoglycans (GAGs) within lysosomes. A characteristic of most affected individuals is radiographic evidence of symmetrical epiphyseal dysplasia, with short stature and degenerative joint disease. Although there is evidence of epiphyseal dysfunction, little is known of the changes that occur at the morphological level. The growth plate of the femoral head was studied by light and electron microscopy in five cats with MPS VI (Maroteaux-Lamy syndrome, arylsulfatase B deficiency) and 12 normal cats. Compared with the normals, the MPS VI cat growth plates exhibited poorly organized proliferative zones, an almost total loss of column formation in the hypertrophic zone, an uneven chondro-osseous junction, a disorganized calcifying cartilage zone, and abnormal or reduced numbers of osteoclasts. By electron microscopy, the cytoplasm of affected cat chondrocytes was filled with membrane-bound vacuoles. Together these findings indicate that the MPS diseases cause major changes in growth plate structure and function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310256
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  • 8
    Electronic Resource
    Electronic Resource
    The hepatic ultrastructure of chlordene-fed pigeons (1977)
    Springer
    Archives of environmental contamination and toxicology 5 (1977), S. 385-402 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract Adult male pigeons were fed 500 ppm of nontoxic chlordene per day for 6 weeks. The ultrastructure of hepatic cells of treated pigeons was examined and compared with that of the control birds. Chlordene feeding induced cytological changes in the structure of liver cells. Thinning of the microvilli of bile canaliculi and clear marking of fibrous long spacing and non-fibrous segment long spacing on collagen fibers were noticed. Increase in the number as well as the vacuolation of lipid bodies in certain portions of the cytoplasm, presence of myeloid bodies in mitochondria, and an increase in the smooth-surfaced endoplasmic reticulum were observed in the liver cells of pigeons given chlordene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02220919
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  • 9
    Electronic Resource
    Electronic Resource
    CO hydrogenation over Co/SiO2: catalytic tests and surface analysis of adsorbed hydrocarbons (1998)
    Springer
    Catalysis letters 52 (1998), S. 131-137 
    Details
    ISSN: 1572-879X
    Keywords: Co/SiO2 catalysts ; Fischer–Tropsch synthesis ; Schulz–Flory distribution ; H2-temperature-programmed reaction ; secondary ion mass spectrometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract We have studied the CO hydrogenation over a Co/SiO2 catalyst under mild reaction conditions (up to 4.4 bar total pressure, H2/CO = 2,T = 483K) and performed a post-reaction analysis of the chemical surface composition by means of secondary ion mass spectrometry (SIMS) and temperature-programmed reaction (TPR) in hydrogen gas. A hydrocarbon chain growth probability α = 0.78 was found in the catalytic studies. The SIMS analysis revealed the existence of individually adsorbed CxHy species up to C8Hy, in accordance with end-on bonding to the catalyst surface. These species were removed from the catalyst surface in the subsequent H2-TPR experiment. Significant methane desorption occurred at temperatures (⩾500 K) well above those of the longer-chain hydrocarbons indicating either an increasing hydrogenolysis activity of Co metal during H2-TPR or the presence of a more tightly bound “carbidic” adsorbate under FT conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019004427482
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  • 10
    Electronic Resource
    Electronic Resource
    Study of the preparation of bulk tungsten carbide catalysts with C2H6/H2 and C2H4/H2 carburizing mixtures (1997)
    Springer
    Catalysis letters 44 (1997), S. 229-239 
    Details
    ISSN: 1572-879X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The influence of the preparation procedure of tungsten carbide on the mechanism of carburization is discussed. This work is focused on the reduction and the carburization of tungsten trioxide by a mixture of hydrocarbon and H2 to form WC. Temperature-programmed reaction spectra obtained with CH4, C2H6 and C2H4 have been measured. In presence of the CH4-H2 mixture, H2 is the reducing agent and the hydrocarbon is consumed for the carburization whereas C2H6 or C2H4 participates in the reduction of the tungsten oxide. The temperatures of reduction and carburization are lower by about 150 K using C2H6 or C2H4 instead of CH4. Such a decrease of the temperature of reduction of tungsten oxide is needed to avoid the formation of poorly reducible compounds that can occur during the preparation of supported tungsten carbide. Furthermore, the surface area of the resulting carbide is 25 m2/g with C2H6 and C2H4 and 10 m2/g with CH4. During the carburization, the deposit of excess carbon on the WC surface is larger with the C2 hydrocarbons than with CH4, but it protects the carbide and can be removed by hydrogen treatment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018985227289
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