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  • 1
    Electronic Resource
    Electronic Resource
    A new ab initio potential energy surface for hydrogen atom on ruthenium(0001) and its use for variational transition state theory and semiclassical tunneling calculations of the surface diffusion of hydrogen and deuterium (1990)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 1973-1981 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100368a047
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  • 2
    Electronic Resource
    Electronic Resource
    Physics of metal clusters (1987)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 91 (1987), S. 3141-3149 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100296a009
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  • 3
    Electronic Resource
    Electronic Resource
    Cytotoxic effects of gingival retraction cords on human gingival fibroblasts in vitro (2004)
    Oxford, UK : Blackwell Science Ltd
    Journal of oral rehabilitation 31 (2004), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary  The objective of this study was to determine the cytocompatibility of three different extracts of gingival retraction cords and to compare the cytotoxic effect of these materials on human gingival fibroblasts. Gingival retraction cords impregnated with aluminium sulphate (Gingi-Aid), dl-adrenaline HCl (Gingi-Pak) and non-drug-impregnated cord (Gingi-Plain) were eluted with culture medium for 10 min and 24 h. Cytotoxicity was judged using a tetrazolium bromide reduction assay. Our data demonstrated that gingival retraction cords applied alone almost completely inhibited cell viability (P 〈 0·05). In addition, the results also showed that the eluates from aluminium sulphate-impregnated cord, dl-adrenaline HCl-impregnated cord and non-drug-impregnated cord were cytotoxic to primary human gingival fibroblast cultures (P 〈 0·05). The cell viability of incubation of gingival fibroblasts containing 10-min eluates of aluminium sulphate, dl-adrenaline HCl and non-drug-impregnated cord was 61, 21 and 70%, respectively. The cell viability of incubation of gingival fibroblasts containing 24 h eluates of aluminium sulphate, dl-adrenaline HCl and non-drug-impregnated cord was 68, 58 and 72%, respectively. It was found that dl-adrenaline HCl-impregnated gingival retraction cord was the most toxic gingival retraction cord among the materials tested in all cultures (P 〈 0·05). The cytotoxicity decreased in an order of dl-adrenaline HCl-impregnated cord 〉 aluminium sulphate-impregnated cord 〉 non-drug-impregnated cord. The extent or degree of the cytotoxicity depended on the materials tested. Gingival retraction cords have significant potential for gingival toxicity. Careful management of gingiva retraction cords would lower the risk of potential gingival tissue damage during clinical application procedure and thus increase the success of prosthodontic procedures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2842.2003.01237.x
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  • 4
    Electronic Resource
    Electronic Resource
    Template-specific inhibitor for DNA polymerase isolated from cauliflower inflorescence
    Amsterdam : Elsevier
    BBA Section Nucleic Acids And Protein Synthesis 652 (1981), S. 48-54 
    Details
    ISSN: 0005-2787
    Keywords: (Cauliflower inflorescence) ; DNA polymerase inhibitor ; Template specificity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2787(81)90207-0
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  • 5
    Electronic Resource
    Electronic Resource
    DNA sequence of the promoter region of the ompC gene and the amino acid sequence of the signal peptide of pro-OmpC protein in Escherichia coli
    Amsterdam : Elsevier
    FEBS Letters 151 (1983), S. 159-164 
    Details
    ISSN: 0014-5793
    Keywords: (Escherichia coli) Matrix porin ; Pro-OmpC protein ; Promoter region sequence ; Signal peptide sequence ; ompC gene
    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(83)80364-0
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  • 6
    Electronic Resource
    Electronic Resource
    Shrimp hepatopancreatic deoxyribonuclease - purification and characterization as well as comparison with bovine pancreatic deoxyribonuclease
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 1036 (1990), S. 95-100 
    Details
    ISSN: 0304-4165
    Keywords: (Bovine pancreas) ; Active site ; Deoxyribonuclease ; Disulfide ; p-Nitrophenyl phenylphosphonate, (Shrimp hepatopancreas)
    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/0304-4165(90)90019-S
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  • 7
    Electronic Resource
    Electronic Resource
    Cytopathologic effects of arecoline on human gingival fibroblasts in vitro (1999)
    Springer
    Clinical oral investigations 3 (1999), S. 25-29 
    Details
    ISSN: 1436-3771
    Keywords: Key words Betel nut ; Arecoline ; Gingival fibroblasts ; Cytotoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Arecoline, a major betel nut alkaloid, has been detected in saliva obtained during betel nut chewing in concentrations up to 140 μg/ml, corresponding to 0.9 mM. Arecoline in the millimolar concentration range might participate in the initiation and/or progression of periodontal disease during the long-term effects of betel nut chewing. In this study, cell growth, cell proliferation, assessment of cytoplasmic enzyme lactate dehydrogenase (LDH) and collagen synthesis were used to investigate the effects of human gingival fibroblasts exposed to arecoline levels of 0–200 μg/ml. Control culture exhibited a normal monolayer of long spindle-shaped fibroblast morphology. Arecoline-treated human gingival fibroblasts showed a more rounded appearance and detached at the higher concentrations. At concentrations higher than 75 μg/ml, many cells had detached from the surface of the petri dish and numerous floating cells could be seen under the inverted microscope. At a concentrations higher than 25 μg/ml, arecoline inhibited cell growth, proliferation and collagen synthesis and increased LDH leakage in a dose-dependent manner (P〈0.05). These results indicate that arecoline is a cytotoxic agent to human gingival fibroblasts. Repeated and long-term exposure to arecoline could impair gingival fibroblast function. Betel quid chewers might be more susceptible to destruction of the periodontium and less responsive to a regeneration procedures during periodontal therapy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007840050074
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  • 8
    Electronic Resource
    Electronic Resource
    Pseudopotential approaches to the structural energies of crystalline solids and solid surfaces (1987)
    Springer
    Physics and chemistry of minerals 14 (1987), S. 308-314 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract It is now feasible to predict accurately the structural energies of solids and solid surfaces from first principles computational techniques based on pseudopotential theory. We illustrate these techniques for several prototypical systems. We predict structural properties for binary crystalline systems of the form: ANB8–N where (A, B) are simple metals and metalloids and N is the number of valence electrons on A. We illustrate the chemical forces responsible for stabilizing rocksalt, zinc blende, and white tin structures as a function of pressure. Also we demonstrate the utility of these techniques for predicting the surface properties for insulators and transition metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309802
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  • 9
    Electronic Resource
    Electronic Resource
    Continuum theory for lumping nonlinear reactions (1988)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 34 (1988), S. 1519-1527 
    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: A lumping procedure is proposed for continuous reaction mixtures whose components undergo nonlinear reactions. A species-type distribution function is introduced to ensure that the lumped continuous mixture is kinetically consistent with the underlying lumped discrete mixture. It is shown that, if the mixture contains some virtually unreactive species, the lump after a long time will react at a second-order rate. This is true as long as the underlying unlumped reactions are irreversible nth-order with n 〈 2 or reversible first order. When many first-order reversible reactions are lumped together, the apparent behavior of the lump can qualitatively look like that of a reversible reaction. Practical implications of these predictions are discussed. Some published data are reconciled in light of the present theoretical development.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690340914
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  • 10
    Electronic Resource
    Electronic Resource
    Lumping coupled nonlinear reactions in continuous mixtures (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 533-538 
    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: A lumping procedure proposed previously is applied to two types of continuous reaction mixtures: one in which the constituents undergo reactions of a Langmuir-Hinshelwood (LH) type, the other in which the constituents undergo reactions of a bimolecular type. It is shown that both mixtures initially can behave qualitatively like lumped first-order reactions. At large times, the behavior of the lumps can be described by power law kinetics, with the bimolecular lump displaying a higher overall reaction order. In particular, if the feed contains a nonzero amount of unconvertible species, the LH lump at large times decays at a second-order rate, whereas the bimolecular lump decays at a third-order rate. To complement the asymptotic results, expressions describing the behavior of the lumps at any time are derived.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690350403
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