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  • 1
    Electronic Resource
    Electronic Resource
    Surface Texturing of PTFE Film Using Nonequilibrium Plasmas (1995)
    s.l. : American Chemical Society
    Macromolecules 28 (1995), S. 1377-1382 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00109a008
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  • 2
    Electronic Resource
    Electronic Resource
    A matrix metalloproteinase inhibitor reduces bone-type collagen degradation fragments and specific collagenases in gingival crevicular fluid during adult periodontitis (1997)
    Springer
    Inflammation research 46 (1997), S. 310-319 
    Details
    ISSN: 1420-908X
    Keywords: Key words: Gingival crevicular fluid — Periodontitis — Protease inhibitor — Collagenase — Bone resorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Objective and Design: To determine whether an inhibitor of matrix metalloproteinases (MMPs), administered to human subjects in a dental school research clinic, can reduce bone-type collagen degradation fragments in oral inflammatory exudates containing excessive levels of collagenase.¶Materials and Subjects: Gingival crevicular fluid (GCF) was collected from 18 subjects with adult periodontitis whose clinical findings (gingival inflammation, pocket depth, and bone loss on radiographs) predicted excessive MMP activity in their periodontal pockets.¶Treatment: One month before the baseline appointment, plaque and calculus were removed from the teeth by supra- and subgingival scaling. After collection of GCF from 8–12 pocket sites per subject and recording of clinical indices, 12 of the 18 subjects were treated with doxycycline at a low dosage (20 mg b.i.d.) known via an extensive literature to suppress mammalian MMP activity by a non-antimicrobial mechanism. The remaining 6 subjects were followed without drug treatment.¶Methods: At the baseline, 1 and 2-month appointments, GCF samples were analyzed for ICTP (carboxyterminal peptide, a pyridinoline-containing fragment of Type I collagen) and osteocalcin by radioimmunoassay, as well as collagenolytic enzyme activity and MMP species (Western blot). Statistical analyses were determined by ANOVA.¶Results: GCF ICTP and functional collagenase activity (but not osteocalcin levels) were significantly reduced (p 〈 0.05) in the doxycycline-treated subjects at both 1 and 2 month evaluations; there was no such change in the non-treated subjects. Western blots revealed that neutrophil-type collagenase (MMP-8) was the predominant MMP; MMP-13, which has been associated with pathologic collagenolysis including bone resorption, was detected in human GCF for the first time and was more substantially reduced than MMP-8. ¶Conclusion: This is the first demonstration in human subjects of the simultaneous reduction of excessive MMP activity with concomitant reduction in levels of collagen degradation fragments. The findings are potentially applicable to a wide variety of human diseases characterized by excessive collagenase activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000110050193
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  • 3
    Electronic Resource
    Electronic Resource
    Plasma Polymerization of Sputtered Poly(tetrafluoroethylene) (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 7060-7064 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100018a044
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  • 4
    Electronic Resource
    Electronic Resource
    Modeling of non-isothermal glow discharge modification of PTFE using low-energy ion beams (1993)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 97 (1993), S. 12879-12881 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100151a040
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  • 5
    Electronic Resource
    Electronic Resource
    Laboratory studies on fluctuating phenomena (1968)
    Springer
    International journal of biometeorology 12 (1968), S. 15-19 
    Details
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Wechselnde elektromagnetische und elektrische Felder,die auf kolloidale Systeme oder deren Suspensionsmedium einwirken, führen zu einem Anstieg der Sedimentationsrate, elektrophoretischen Beweglichkeit, spezifischen Widerstandskraft, Viskosität und Schock-Gefriertemperatur, während magnetische Felder und statische elektrische Felder zu einer Verlangsamung der Sedimentationsrate führen.
    Abstract: Resume Des champs électromagnétiques et électriques alternatifs agissant sur des systèmes colloïdaux ou le milieu dans lequel ils sont en suspension y provoquent un accroissement de la vitesse de sédimentation, de la mobilité électrophorétique, de la résistivité, de la viscosité et de la température de congélation par chocs. Des champs magnétiques constants ou de l'électricité statique conduisent, au contraire, à un ralentissement de leur vistesse de sédimentation.
    Notes: Abstract Alternating electromagnetic and electrical fields, applied to colloidal systems or to their suspending media, result in increases in sedimentation rate, electrophoretic mobility, resistivity, viscosity, and shock-freezing temperature, while magnetic fields and static electrical fields result in decreasing sedimentation rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01552973
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  • 6
    Electronic Resource
    Electronic Resource
    Dynamics of a creeping Newtonian jet with gravity and surface tension: A finite difference technique for solving steady free-surface flows using orthogonal curvilinear coordinates (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 220-232 
    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 finite difference technique capable of simulating steady, incompressible, viscous, free-surface flows has been successfully applied to the motion of a creeping Newtonian jet, including both surface tension and gravitational forces. In accordance with experimental results, the numerical solutions predict either a 12 or 16% increase in the jet dimensions depending on whether the jet emerges from a circular or a slit die. Both gravity and surface tension inhibit the swelling behavior.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280209
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of fillers on kinetics of epoxy cure (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 24 (1979), S. 635-649 
    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: The effect of fillers on the reaction of liquid epoxy systems cured with m-phenylenediamine has been studied within the temperature range 70-170°C using a Perkin-Elmer differential scanning calorimeter. Quantitative studies have been made with regard to the effect of filler on the kinetics of cure. Mathematical expressions have been devised to describe the curing reaction as a function of time, temperature, and filler content. These kinetic expressions were found to yield results which were in good agreement with the experimental data for the two fillers studied.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1979.070240302
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  • 8
    Electronic Resource
    Electronic Resource
    Competitive adsorption of water-soluble polymers on attapulgite clay (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 43 (1991), S. 1293-1299 
    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: The individual, competitive, and displacement adsorption of polyvinyl alcohol (PVOH), hydroxyethyl cellulose (HEC), and hydroxypropylmethyl cellulose (HPMC) in aqueous solution onto an attapulgite clay has been systematically studied. For the individual adsorption experiments, the amount of polymer adsorbed at equilibrium decreased in the order PVOH, HEC, HPMC. In the competitive adsorption experiments, the adsorption level of each polymer is diminished by the presence of a competing polymeric species. Binary mixtures of a cellulosic polymer (HEC or HPMC) with PVOH result in a substantial reduction in the amount of cellulosic polymer adsorbed. In the displacement adsorption studies, the sequential addition of HEC or HPMC is not able to displace previously adsorbed PVOH molecules to any appreciable extent. However, the addition of PVOH to previously equilibrated HEC/clay or HPMC/clay suspensions results in a large amount of the adsorbed cellulosic polymer being displaced by PVOH, especially under conditions of high surface coverage. These results indicate that PVOH is preferentially adsorbed on the clay surface and the strength of attachment to the surface is greater for PVOH than for either cellulosic polymer.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1991.070430710
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  • 9
    Electronic Resource
    Electronic Resource
    Conformal mapping analysis of infection mold filling (1980)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 20 (1980), S. 642-651 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: A conformal mapping analysis of the mold filling behavior in rectangular cavities is developed. The polymer melt is assumed to behave as a purely viscous Generalized Newtonian Fluid. The shape of the advancing flow front, the pressure distribution in the mold cavity, streamlines, constant temperature lines, and the required filling time may be readily determined using the techniques described. The theoretical results are in good agreement with experimental data previously reported in the literature.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760200910
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  • 10
    Electronic Resource
    Electronic Resource
    Rheological and heat-transfer considerations for the processing of reactive systems (1984)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 24 (1984), S. 698-706 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: Thermosetting materials have found widespread use over a broad spectrum of engineering applications due to their intrinsic mechanical strength, thermal and dimensional stability, and other unique properties. Consideration is given to those aspects of reaction kinetics, rheology, fluid mechanics, and heat transfer which are of relevance for the mathematical modeling of reactive polymer processing. Particular emphasis is given to the characterization of reaction kinetics under non-isothermal conditions, the effect of fillers or reinforcing agents on the heat transfer and kinetic behavior, and the complex nature of the interactions brought about by the reactivity of these systems. In addition, the current status of the mathematical simulation of reactive polymer processing is briefly reviewed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760240912
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