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  • 1
    Electronic Resource
    Electronic Resource
    Scanning electron microscopic, transmission electron microscopic, and confocal laser scanning microscopic observation of fibroblasts cultured on microgrooved surfaces of bulk titanium substrata (1998)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 40 (1998), S. 425-433 
    Details
    ISSN: 0021-9304
    Keywords: surface topography ; plasma etching ; cellular orientation ; focal adhesion point ; in vitro ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: During this study, microtechnology and plasma etching were used to produce gratings 1.0 (TiD01), 2.0 (TiD02), 5.0 (TiD05), and 10.0 μm wide (TiD10) into commercially pure titanium wafers. After incubation of rat dermal fibroblast (RDFs) on these surfaces for 3 days, the cells were observed with scanning electron (SEM), transmission electron (TEM), and confocal laser scanning microscopy (CLSM). Results showed that the RDFs as a whole and their stress fibers oriented strictly parallel to the surface pattern on the TiD01 and TiD02 surfaces. On the TiD05 and TiD10 surfaces, this orientation was not observed. In addition, TEM and CLSM demonstrated that the focal adhesion points (FAP) were located mainly on the surface pattern ridges. TEM revealed that FAP were wrapped occasionally around the edges of the ridges. Only the RDFs on both the TiD05 and TiD10 surfaces protruded into the grooves and possessed FAP on the walls of the grooves. Attachment to the groove floor was observed only on the TiD10 textures. Comparison of these results with earlier observations on microtextured silicone rubber substrata suggests that material-specific properties do not influence the orientational effect of the surface texture on the observed RDF cellular behavior. The proliferation rate of the RDFs, however, seems to be much higher on titanium than on silicone rubber substrata. © 1998 John Wiley & Sons, Inc. J Biomed Mater Res, 40, 425-433, 1998.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Photoinitiators and photoinitiation, 9Part 8: cf. J. E. Baxter, R. S. Davidson, H. J. Hageman, T. Overeem, Makromol. Chem. 189, 2769 (1988). Photoinitiators for radical polymerization which counter oxygen-inhibition (1988)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 189 (1988), S. 2781-2795 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: 1-Alkanesulfonic and 4-alkylbenzenesulfonic esters of α-hydroxymethylbenzoin were shown to photoinitiate the polymerization and crosslinking of acrylates. The overall rate of polymerization in bulk and of crosslinking in solution, respectively, proved to be constant within each series of homologues. However, in thin films in an air atmosphere, the overall rate of crosslinking (curing rate) proved to increase with increasing alkyl chain-length within each series of homologues. Moreover, the curing rate obtained with the 1-hexanesulfonic ester and its higher homologues substantially surpassed the curing rates obtained with a number of established photoinitiators, provided a small amount of an alkali metal salt (preferably a lithium salt) is present. The curing mechanism of the sulfonic esters of α-hydroxymethylbenzoin and the role of the alkali metal salt are explained.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1988.021891207
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  • 3
    Electronic Resource
    Electronic Resource
    Ausscheidung von Hollanditwhiskern in Aluminiumtitanatglaskeramiken (1994)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 25 (1994), S. 490-497 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Precipitation of Hollandite Whiskers in Aluminum Titanate Glass CeramicsThe preparative chemical basis of the reinforcement of aluminum titanate ceramics via dissolution of whisker-shaped phases is established. Main emphasis is put on the non-silicate system Ba-Al-Ti-O, which contains the hollandite phase Ba1,23Al2.46Ti5.54O16. Such hollandite crystals are potential new ceramic whiskers for the purpose of reinforcing ceramics. In the case of tielite ceramics their preparation can be realized „in situ“ via a glass-ceramic-process, the final step of which beeing crystallization of the tielite-matrix. Thus a texture of high density, penetrated by whiskers, is obtained.
    Notes: Die präparativ-chemischen Voraussetzungen für eine Verstärkung von Aluminiumtitanatkeramiken durch innere Ausscheidung Whiskerförmiger Fremdphasen werden erarbeitet. Der Schwerpunkt der Untersuchunghen liegt bei dem nichtsilicatischen System Ba-Al-Ti-O. Hierin existiert die Hollanditphase Ba1,23Al2,46Ti5,54O16. Solche Hollanditkristalle stellen potentielle neue keramische whisker zum Zwecke der Verstärkung von Keramiken dar. Im Falle von Tialitkeramiken gelingt die Darstellung dieser Whisker „in situ“ auf dem Wege eines glaskeramischen Prozesses, dessen abschließender Schritt in der Kristallisation der Tialitmatrix besteht. Man erhält ein dichtes, whiskerdurchdrungenes Gefüge.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19940251210
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  • 4
    Electronic Resource
    Electronic Resource
    Quaternäre Keramiken im System Si/B/N/C aus polymeren Carbamidsäurederivaten (1998)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 29 (1998), S. 573-587 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Quaternary Ceramics in the System Si/B/N/C from Polymeric Carbamid Acid DerivativesSolid polymeric materials can be formed through reaction of the single-source precursor trichlorosilyl-amino-dichloroborane (TADB) with derivatives of carbamic or formic acid. Pyrolysis of these polymers at 1500 °C results in ceramic materials of the composition SiBN2.3Cx with X = 0.4 - 2.5. The high-temperature and oxidation behaviours of the ceramics depend on the starting polymer. The ceramic networks consist of tetrahedrally coordinated silicon and trigonally planar coordinated boron. They are homogeneous with respect to the elemental distribution, and remain in the amorphous state up to at least 1500°C.
    Notes: Aus dem molekularen Einkomponentenvorläufer Trichlorsilyl-amino-dichlorboran (TADB) können durch Umsetzung mit Derivaten der Carbamid- bzw. Ameisensäure polymere Feststoffe gewonnen werden. Durch Pyrolyse dieser Polymere bei 1500 °C erhält man keramische Materialien der Zusammensetzung SiBN2,3Cx mit X = 0,4-2,5. Hochtemperatur- und Oxidationsverhalten der Keramiken sind je nach Ausgangspolymer sehr unterschiedlich. Die keramischen Netzwerke bestehen aus tetraedrisch koordiniertem Silicium und trigonal-planar koordiniertem Bor, sind bezüglich der Elementverteilung homogen und bleiben bis mindestens 1500 °C amorph.
    Additional Material: 20 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19980291007
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  • 5
    Electronic Resource
    Electronic Resource
    Novel access to polyboro- and polyalumosilazanes suitable as precursors for ternary nitride ceramicsSupport of the Bundesministerium für Forschung and Technologie, Fonds der Chemischen Industrie and Bayer AG is gratefully acknowledged. (1995)
    Weinheim : Wiley-Blackwell
    Advanced Materials 7 (1995), S. 289-292 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19950070309
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  • 6
    Electronic Resource
    Electronic Resource
    Promising new precursors for the CVD of gold (1995)
    Weinheim : Wiley-Blackwell
    Advanced Materials 7 (1995), S. 297-300 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19950070312
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  • 7
    Electronic Resource
    Electronic Resource
    Intrinsic redox behavior of inert polymer layers filled with copper phthalocyanine pigmentFinancial support of this work by Deutsche Forschungsgemeinschaft and kind provision of CuPc by BASF AG is gratefully acknowledged. (1991)
    Weinheim : Wiley-Blackwell
    Advanced Materials 3 (1991), S. 385-388 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19910030710
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  • 8
    Electronic Resource
    Electronic Resource
    Persistent photoinduced electron transfer from functionalized dendrimers to BuckminsterfullereneDSM Research and Philips Research are gratefully acknowledged for unrestricted research grants. (1996)
    Weinheim : Wiley-Blackwell
    Advanced Materials 8 (1996), S. 494-497 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19960080608
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  • 9
    Electronic Resource
    Electronic Resource
    Alignment of single-crystal zeolites by means of microstructured surfacesThis work was supported in part by the COST Chemistry program under Number D5/0010/93. We thank T. Mezzacasa for technical support. (1996)
    Weinheim : Wiley-Blackwell
    Advanced Materials 8 (1996), S. 137-139 
    Details
    ISSN: 0935-9648
    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
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adma.19960080206
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  • 10
    Electronic Resource
    Electronic Resource
    Low temperature corrosion in domestic refuse boilers monitored with cooled corrosion probes and test heat exchangers (1989)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 40 (1989), S. 150-152 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Überwachung der Niedertemperaturkorrosion in Müllverbrennungsanlagen mit Hilfe von gekühlten Korrosionsmeßsonden und WärmetauschernDie Korrosionseigenschaften von bei der Wärmerückgewinnung aus Verbrennungsgasen durch Kühlen unter dem Taupunkt verwendeten Werkstoffen wurde mit Hilfe von gekühlten Korrosionsmeßsonden untersucht. Die U-rohrförmige Probe ist ein zuverlässiges Mittel zur Durchführung von Versuchen in der Anlage selbst. Ergebnisse aus einer Kesselanlage einer Müllverbrennung mit starker Niedertemperatukorrosion werden mitgeteilt, wobei aufgrund der Ergebnisse eine Mindesttemperatur von 75°C eingehalten werden muß, um Korrosion zu vermeiden.Eine weitere Reihe von Ergebnissen stammt aus dem Bereich der Verbrennungsgasreinigung und -kühlung in einem experimentellen Wäremetauscher. Danach wird unlegierter Stahl sowohl in ungereinigtem Rohgas als auch im gereinigten Verbrennungsgas gleich stark angegriffen, während die nichtrostenden Stähle AISI 316 und 254 SMO zwar im Rohgas stark angegriffen werden, im gereinigten Gas jedoch befriedigend widerstandsfähig sind.
    Notes: Corrosion properties of materials for utilizing of flue gas energy by cooling the gas below the acid dew point have been studied with cooled corrosion probes. The U-tube corrosion probe is found to be a reliable method where tests can be done in the actual plant environment. Results from one domestic refuse boiler plant with severe low temperature corrosion problems are reported and the results described indicating a minimum temperature of 75°C to avoid corrosion.Another set of results is reported with flue gas cleaning and cooling in an experimental heat exchanger. Unalloyed steel is found to show the same level of corrosion in both raw uncleaned and cleaned flue gas. AISI 316 and 254 SMO stainless steels have shown high corrosion rates in the raw gas but a satisfactory resistance in the cleaned gas.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19890400306
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