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  • 1
    Electronic Resource
    Electronic Resource
    Versprödungserscheinungen an ferritischen Chromstählen und deren Einfluß auf das Schwingungsrißkorrosionsverhalten (1985)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 36 (1985), S. 265-272 
    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: Embrittlement conditions of ferritic chromium steels and influence on the corrosion fatigue behaviourThe corrosion fatigue behavior of two ferritic stainless steels, with 18% and 28% chromium respectively, embrittled by α'- or sigma-phase has been studied in this investigation. No effect of the α'-phase on the corrosion fatigue behaviour in a 0.5 N or 4 N air saturated soldium chloride solution at 80 °C has been found. In the 4 N solution corrosion fatigue cracking of the 18% chromium steel in the solutionized as well as in the α'-embrittled condition is initiated by pitting at nonmetallic inclusions. Sigma-phase not only decreases the mechanical properties of the 28% chromium steel by heavy embrittlement but also leads to crack initiation by pitting in the 4 N solution at the interface sigma/ferrite. The pronounced decrease of the corrosion fatigue properties of the 28% chromium steel could well be correlated with chromium depletion of the ferrite matrix by precipitation of sigma phase.
    Notes: Der Einfluß der versprödenden Phasen α' und σ auf das Schwingungsrißkorrosionsverhalten der beiden rein ferritischen Chromstähle 1.4522 und 1.4575 (18% bzw. 28% Chrom) wurde untersucht. Sowohl in der 0,5 N als auch in der 4 N Natriumchloridlösung konnte keine Beeinflußung der Korrosionseigenschaften durch α'-Ausscheidung festgestellt werden. In Luft und der 0,5 N Lösung bewirkt die Ausscheidung von α'-Phase bei beiden Stählen eine Erhöhung der Schwingfestigkeit. Der Abfall der Korrosionsschwingfestigkeit in der 4 N Natriumchloridlösung wird beim 18%-Chromstahl, im lösungsgeglühten und α'-versprödeten Zustand, durch Lochfraß an nichtmetallischen Einschlüssen herbeigeführt. Die durch die α'-Ausscheidung hervorgerufene, stärker lokalisierte Oberflächenverformung führt beim 28%-Chromstahl in der 4 N Lösung ebenfalls zur Erniedrigung der Korrosionsschwingfestigkeit. Die sigma-Phase verschlechtert einerseits die mechanischen Eigenschaften des 28%-Chromstahles und bewirkt in der 4 N Lösung Bildung von Lochfraß an der Grenzfläche sigma-Phase/Ferrit. Die Bildung von Lochfraß konnte eindeutig auf Chrom- und Molybdänverarmung in der'Ferritmatrix zurückgeführt werden.
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19850360602
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  • 2
    Electronic Resource
    Electronic Resource
    Nanophases consisting of individual polystyrene molecules on mica imaged with scanning electron microscopy (1993)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 44 (1993), S. 206-207 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Scanning electron microscope images are presented of mica surfaces treated with an initiator and heated in the presence of styrene to obtain a grafted polymer. These images show “droplets” of size corresponding to that of individual polystyrene molecules. Other experimental evidence is presented which suggests that the droplets are indeed individual molecules. The images are believed to be the first ever obtained of individual, “tethered” synthetic polymer molecules.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1993.010440406
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  • 3
    Electronic Resource
    Electronic Resource
    116. Einfluß verschiedener Prozeßparameter auf die Kinetik des Flockenwachstums bei der Agglomeration in Flüssigkeiten (1996)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1139-1140 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.3306809118
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  • 4
    Electronic Resource
    Electronic Resource
    Einsatz von Hydrozyklonen zur Fraktionierung und Konzentrierung von Biomasse (1997)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 69 (1997), S. 1297-1297 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.3306909127
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  • 5
    Electronic Resource
    Electronic Resource
    Einfluß der Bindemittel- und Feststofffraktion auf das Flockenwachstum bei der Agglomeration in Flüssigkeiten (1995)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 67 (1995), S. 1143-1143 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330670987
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  • 6
    Electronic Resource
    Electronic Resource
    Titantetrafluorid - Eine überraschend einfache Kolumnarstruktur (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1227-1231 
    Details
    ISSN: 0044-2313
    Keywords: TiF4 ; preparation, single crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Titanium Tetrafluoride - a Surprising Simple Column StructureFor the first time single crystals of TiF4 have been obtained by solvothermal decomposition of (O2)2Ti7F30 in anhydrous HF. The colourless, transparent needles crystallize orthorhombic in spacegroup Pnma-D2h16 (No. 62) with a = 2 281.1, b = 384.8, c = 956.8 pm, Z = 12. The new type of structure is dominated by isolated columns of corner-linked TiF6-octahedra.
    Notes: Durch Solvothermalsynthese in wasserfreier HF gelang es endlich erstmals, TiF4 aus (O2)2Ti7F30 in Form solcher Einkristalle darzustellen, die eine Strukturbestimmung ermöglichten. Die farblosen, transparenten Nadeln kristallisieren in der Raumgruppe Pnma-D2h16 (Nr. 62) mit a = 2 281,1, b = 384,8, c = 956,8 pm, Z = 12. TiF4 bildet einen eigenen Strukturtyp, dessen charakteristisches Merkmal von einander isolierte, aus TiF6-Oktaedern aufgebaute Säulen sind (Kolumnarstruktur).
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956210720
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  • 7
    Electronic Resource
    Electronic Resource
    A versatile all-glass GC/MS interface for capillary columns (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 225-228 
    Details
    ISSN: 0935-6304
    Keywords: GC/MS Interface ; Glass ; Open split ; HMDS glass surface deactivation ; Glass capillary columns ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new all-glass interface for GC/MS designed to fully exploit the potential of glass capillary columns is described. The system works in the open split mode and has high versatility with respect to column changing. It is especially suitable for mass spectrometers, which are not exclusively dedicated to GC/MS work. Two chromatograms illustrate the properties of the described interface.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240020506
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  • 8
    Electronic Resource
    Electronic Resource
    Glass capillary GC/MS of butter triglycerides (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 675-676 
    Details
    ISSN: 0935-6304
    Keywords: Triglycerides ; GC/MS of triglycerides ; Capillary, glass ; All-glass GC/MS interface ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240021109
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation and evaluation of OV-240-OH coated glass capillary columns for isomer specific determination of PCDDs and PCDFs (1987)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 10 (1987), S. 548-552 
    Details
    ISSN: 0935-6304
    Keywords: Glass capillary gas chromatography ; Immobilization ; OV-240-OH cyanopropylpolysiloxane ; Isomer specificity ; Polychlorinated dibenzo-p-dioxins ; Polychlorinated dibenzofurans ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Glass capillaries were leached, dehydrated, persilylated with 1, 3-bis (3-cyanopropyl) tetramethyldisiloxane, and coated with OV-240-OH. After crosslinking and binding the phase to the glass surface the columns showed high separation efficiency, high temperature stability, and inertness comparable to persilylated apolar columns. Column performance is shown to be superior to liquid phase cyanopropyl columns such as SP 2330. The excellent separation capabilities together with the selectivity of the phase makes OV-240-OH coated columns a valuable tool for the determination of toxic isomers in complex mixtures of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). The order of elution of individual TCDD isomers was found to be similar to that described for SP 2330 or Silar 10c. The detection of PCDDs and PCDFs in a fly ash extract further illustrates the utility of OV-240-OH coated columns. The high temperature limit of these columns opens the way for the analysis of high boiling compounds such as mixed brominated/chlorinated dibenzo-p-dioxins and dibenzofurans.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240101004
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  • 10
    Electronic Resource
    Electronic Resource
    Über Steroide und Sexualhormone. 208. Mitteilung. Versuche zur Einführung funktioneller Gruppen in die Stellung 18 des Steroid-Gerüstes. II (1955)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 38 (1955), S. 1404-1412 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden weitere Steroid-Derivate beschrieben, in welchen der Ring D des Gerüstes unter Einführung einer Methylen-Gruppierung an C-13 geöffnet ist. Diese neue Klasse von Verbindungen soll als Ausgangsmaterial für Versuche zur Einführung einer Sauerstoff-funktion in das anguläre Methyl an C-13 dienen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19550380611
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