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  • 1
    Electronic Resource
    Electronic Resource
    Modification of the ATP inhibitory site of the Ascaris suum phosphofructokinase results in the stabilization of an inactive T state (1991)
    s.l. : American Chemical Society
    Biochemistry 30 (1991), S. 9998-10004 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00105a026
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  • 2
    Electronic Resource
    Electronic Resource
    Anatomical Studies on the Spinal Cord Segments of the Impala (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Anatomia, histologia, embryologia 22 (1993), S. 0 
    Details
    ISSN: 1439-0264
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The anatomy of the spinal cord segments was studied and recorded for the impala. The root attachment lengths were greatest at C3, T10 and L3 cord segment levels in the respective regions. As to the root emergence length the greatest lengths were observed at C7, T]0〉 L5 and S1 cord segment levels respectively. The interroot interval was longest at C2, T8 and L1 segments respectively. The longest cord segments were C2, T13, L2 and S2 segments. The widest cord segments of their respective regions were C7, T1, L5 and S1 cord segments. As to segment volume C3, T13, L2 and S1 were the most voluminous cord segments in the respective cord regions.Statistical analysis revealed a high correlation among all of the study parameters suggesting a high degree of multicolinearity.Gross anatomical relationships concerning the location of the spinal cord segments with respect to the vertebrae were studied. The cord segments C], Ts–T4 and Li–L3 were within their vertebral limits. In the impala the spinal cord terminated at the midlevel of S4 vertebra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0264.1993.tb00365.x
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  • 3
    Electronic Resource
    Electronic Resource
    Analogous effects of serum lipids from patients with nonthyroidal illness and normal subjects on the uptake of thyroxine and its conversion to triiodothyronine by rat hepatocytes in culture (1993)
    Springer
    Journal of molecular medicine 71 (1993), S. 21-26 
    Details
    ISSN: 1432-1440
    Keywords: Nonthyroidal illness ; Serum lipids ; Thyroxine uptake ; Thyroxine conversion ; Hepatocyte culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The low level of triiodothyronine (T3) in nonthyroidal illnesses (NTI) has been attributed to the decreased peripheral conversion of thyroxine (T4) to T3; patient's serum lipids decreased the conversion in a cell-free system. The objective of our study was to determine whether patients' serum lipids, whose content was elevated 2.5-fold above the reference serum value, and oleic acid affected the uptake of T4 and its conversion to T3 by rat hepatocytes in culture, thereby providing information on the cell's response to these processes. Serum ether extracts and oleic acid (0.1 μmol/l) were incubated with cells followed by assessment of T4 uptake and conversion of T4 to T3. The mean T4 uptake in the presence of ether extracts of NTI patients' or normals' sera were similar (112±15% and 110±24%, respectively). There was no difference in the T4 to T3 conversion between the patient and normal groups (90 ±14%); oleic acid also did not influence the conversion (96.7 ± 1.6%). Uptake and conversion in the absence of either extracts and oleic acid were controls. These results suggest that serum lipids from NTI patients and normal subjects exercise qualitatively and quantitatively almost similar influences on T4 uptake and its conversion to T3; oleic acid is not an inhibitor of T4 uptake and T4 to T3 conversion in the rat hepatocyte. Since hepatocytes actively process fatty acids, their influence on intracellular conversion of T4 is not equitable with T4 conversion using the cell-free system. Our results do not support the hypothesis that abnormal lipid metabolism in NTI impairs hepatic T4 to T3 conversion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00210958
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  • 4
    Electronic Resource
    Electronic Resource
    Accumulation of low molecular weight (bleomycin detectable) iron in bone marrow cells of rats after benzene exposure (1990)
    Springer
    Archives of toxicology 64 (1990), S. 339-342 
    Details
    ISSN: 1432-0738
    Keywords: Benzene ; Bleomycin ; Low molecular weight iron ; Lipid peroxidation ; Superoxide radical ; Myelotoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An accumulation of low molecular weight (LMW) bleomycin detectable iron in the bone marrow was observed after administration of benzene (IP 0.5 ml/kg, daily) for 5 and 10 days in female albino rats. However, this LMW iron was not detectable in the bone marrow of rats from the control group. Studies of bone marrow fractionation showed that the maximum accumulation of this LMW iron was in the mitochondrial fraction. An increase in the activity of superoxide dismutase and lipid peroxidation was also noticed in the benzene exposed groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01972997
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  • 5
    Electronic Resource
    Electronic Resource
    Problems of livestock development in the Himalayan region (1994)
    Springer
    The environmentalist 14 (1994), S. 201-205 
    Details
    ISSN: 1573-2991
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Summary This paper outlines the complexities and problems of animal husbandry in the Himalayas of India. In particular, the climatic influences of temperature, rainfall and humidity are emphasised. A wide range of possible improvements to decrease livestock malnutrition and mortality are proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01907139
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  • 6
    Electronic Resource
    Electronic Resource
    Micellar effect of sodium dodecyl sulfate on the reactions between iron(II) and p-benzoquinone, and iron(III) and hydroquinone (1991)
    Springer
    Reaction kinetics and catalysis letters 43 (1991), S. 209-216 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Исследовали мицеллярный эффект додецилсульфата натрия (ДСН) на начальной стадии реакции 1) Fe(II) с парабензохиноном и 2) Fe(III) с гидрохиноном. В первом случае наблюдали ускорение и кривая зависимости скорости от концентрации ПАВ-а обладает максимумом. ДСН оказывает ингибирующий эффект на вторую реакцию. Исходя из модели Березина, произведен кинетический анализ.
    Notes: Abstract The micellar effet of sodium dodecyl sulfate (SDS) on the initial stages of the reaction between (1) Fe(II) and p-benzoquinone, and (2) Fe(III) and hydroquinone have been investigated. In the former case acceleration was observed, the rate-[surfactant] profile showing a maximum. SDS has an inhibitory effect on the latter reaction. Kinetic analysis has been carried out using Berezin's approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02075435
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  • 7
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of mannich bases from cardbisphenolRRL(H) Communication No. 2243. (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 39 (1990), S. 1993-2004 
    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
    Notes: Water-soluble Mannich bases were synthesized from cardbisphenol by Mannich reaction and were characterized by 1H-NMR and 13C-NMR spectroscopic methods. The effect of electrodeposition parameters on the film formation from binders and from the pigmented composition were studied. The polymers gave uniform coatings with good mechanical properties and the pigmented systems exhibited high resistance to organic solvents and excellent corrosion resistance properties.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1990.070390915
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  • 8
    Electronic Resource
    Electronic Resource
    Grafting of maleic anhydride onto polypropylene: Synthesis and characterization (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 53 (1994), S. 239-245 
    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
    Notes: Isotactic polypropylene was grafted with maleic anhydride using benzoyl peroxide as an initiator and toluene as a solvent. Effects of various parameters such as monomer and initiator concentration, reaction time, and reaction temperature on percentage grafting were studied. Effect of various solvents on extent of grafting was also studied. The maximum extent of grafting achieved was 5.3%. The graft copolymers were characterized by i.r., thermal, viscometric, and contact angle studies. Improved thermal stability and decreased intrinsic viscosity and critical surface tension were observed for graft copolymers. © 1994 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1994.070530212
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