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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 80 (1976), S. 2035-2037 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 85 (1981), S. 341-350 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 62 (1958), S. 1153-1157 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of medicinal chemistry 24 (1981), S. 903-906 
    ISSN: 1520-4804
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 6977-6982 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It has been known for some time that particles of nickel oxide of less than about 100 nm in size show superparamagnetism that increases as the particle size decreases. The origin of the particle magnetic moment responsible for this behavior has never been fully explained. This research indicated that the size of the particle rather than the presence of nonstoichiometry or impurities of reduced nickel determines the moment. The critical experiment was the measurement of magnetization versus magnetic field for a sample of nickel oxide prepared under conditions that preclude metallic nickel. Almost identical results were found for the original sample, which was black in color and thus nonstoichiometric, and after mild reduction in hydrogen at 400 K, which produced stoichiometry and changed the color to green. The magnetic susceptibility was inversely proportional to the particle size for a given method of preparation. This is consistent with a simple model of incomplete edges on the bounding planes of the crystallite and provides a possible basis for a practical method for measuring particle size in nickel oxide-containing samples.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK; Malden, USA : Blackwell Science Inc
    Wound repair and regeneration 13 (2005), S. 0 
    ISSN: 1524-475X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: It has been known for several decades that early gestational human fetuses will regenerate cutaneous wounds resulting in a scarless repair. In postnatal humans, myofibroblasts are known to play a central role in wound healing and in the pathology of fibrosis. The role of the profibrotic growth factor TGF-β1 in human fetal fibroblasts remains unclear, with recent data now showing that TGF-β1 is present in fetal wounds but for shorter periods. We have therefore examined the effects of TGF-β1 on fibroblasts isolated from early human fetuses (〈14week EGA). We have identified that stimulation with 5 ng/ml TGF-β1 induces a significant proportion of human fetal fibroblasts to differentiate into myofibroblasts (approximately 40%), as identified by staining of α-smooth muscle actin (n = 5). Interestingly, this response was earlier (peaking at day 2–3) and more transitory (over by day 4–5) than that seen with postnatal dermal fibroblasts (peaking at day 6–8 and dropping at day 10). We examined the effects of blocking various intracellular pathways involved in TGF-β1 signalling. The early and transitory myofibroblast induction seen in fetal cells is blocked by an inhibitor of p-JNK (n = 4; p =〈 0.05). In contrast, the later and more prolonged induction of myofibroblasts seen in postnatal cells was not affected by inhibition of p-JNK. Despite the fact that fetal fibroblasts do indeed differentiate into myofibroblasts they were further shown to exhibit differential behavior to postnatal myofibroblasts with respect to TGF-β1 stimulation of collagen expression, producing significantly less soluble collagen (approximately 50%, n = 4) after 24 or 48 hours of treatment with TGF-β1 in serum-free media. These results appear to indicate a role for TGF-β1 during cutaneous wound healing in the early fetus and show that the response of fetal cells to this important profibrotic cytokine is rapid and more controlled, being short lived. It is possible that a prolonged response to this cytokine may lead to the overblown nature of postnatal wound healing, resulting in fibrosis.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    CNS drug reviews 3 (1997), S. 0 
    ISSN: 1527-3458
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Nefazodone, an antidepressant agent with a phenylpiperazine structure, has a pharmacological profile that is distinct from other antidepressant drugs. Like many other antidepressants, nefazodone inhibits the reuptake of norepinephrine and serotonin from the synaptic cleft. Unlike other antidepressants, nefazodone is also a potent antagonist of 5-HT2 serotonergic receptors. In addition, nefazodone is a weak antagonist of α1-adrenergic receptors, but has little or no affinity for cholinergic, histaminergic, or dopaminergic receptors. In placebo-controlled clinical trials, nefazodone has been found to be an effective antidepressant drug with minimal cardiovascular action and significantly fewer side effects than imipramine. Since nefazodone is an effective antidepressant with a low incidence of serious adverse effects, it may be particularly useful in major depressive disorder patients who are intolerant of the anticholinergic or serotonergic side effects of other antidepressants, or who do not respond to treatment with other antidepressant agents. In this paper, we review the mechanisms of action, the pharmacokinetics, and the antidepressant efficacy of nefazodone.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The fragment of β-amyloid comprised of amino acids 25–35 induces a rapid, concentration-dependent increase in cytosolic free calcium levels in suspensions of PC12 neuronal cells. This action of β-amyloid 25–35 is not altered by pretreatment with the calcium channel blockers nifedipine or cobalt, with the depleter of intracellular calcium stores cyclopiazonic acid, or with the phospholipase C inhibitor neomycin. However, the effects of β-amyloid 25–35 on cytosolic free calcium are absent in calcium-free buffer and are blocked by the antioxidant lazaroid U-83836E and by vitamin E. β-Amyloid 25–35 is also neurotoxic and produces a concentration-dependent reduction in the viability of PC12 cells in culture. The neurotoxic action of β-amyloid is blocked by U-83836E and vitamin E but not by nifedipine or cobalt. These data indicate that both the disruption of calcium homeostasis and the reduction of cell viability produced by β-amyloid in PC12 cells are mediated by free radical-based processes.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 55 (1990), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The formation of thiobarbituric acid-reactive products was measured as an index of peroxidation by oxygen free radicals in homogenates of frontal cortex and cerebellum from brains taken at autopsy and verified histologically as being Alzheimer's (n = 6) or normal (n = 6). Compared with controls, basal peroxidation is significantly higher in Alzheimer's cortex, and this difference is also evident in the presence of exogenous iron. Peroxidation in cerebellum and levels of total glutathione, RNA, and DNA in cortex and cerebellum do not differ significantly between Alzheimer's brain and controls. Iron-induced peroxidation in cortex is reduced by the lazaroid U-74500A, with calculated IC50 values that are significantly higher in Alzheimer's samples (10 μM) than in controls (2.5 μM). These observations suggest that cerebral cortex from Alzheimer's patients differs from controls with respect to in vitro peroxidation.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 85 (2002), S. 0 
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The reaction between ground granulated blast furnace slag (GGBFS) having an empirical formula of C7.88S7.39M3A and calcium hydroxide (CH) was investigated. The kinetics of the reaction were explored. Thermogravimetric analysis was used to monitor the consumption of CH from which rate constants were determined. Based on Knudsen's kinetic model, activation energies of 14.5, 17.9, and 22.6 kJ/mol were determined for three different mass ratios of slag and CH reacted over a temperature range of 15° to 50°C and hydrated for a period of time from 0 to 32 days. A comparison of the kinetics of the slag/CH reaction was made with slag/portland cement hydration. The basic features of both appear similar.
    Type of Medium: Electronic Resource
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