An assay of the enzymic oxidation of tyrosine to dityrosine was performed to determine the optimum conditions for dityrosine formation. Improvements were introduced into the method for dityrosine synthesis and purification so as to obtain a higher yield (10%) of pure dityrosine. The product served a
Photothermal characterization of protective layers and surface modifications
✍ Scribed by I. Delgadillo-Holtfort; J. Gibkes; D. Dietzel; M. Kaack; B. K. Bein; J. Pelzl
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 132 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0933-5137
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✦ Synopsis
Protective layers, such as CVD and PVD coatings on steel substrates, surface modifications related to friction wear, and the effects of mechanical and thermal cycling of SMA samples have been analysed with respect to the depth profile of the thermal properties by using IR detection of thermal waves. The advantage of IR detection of thermal waves is that this method is most appropriate for remote sensing under industrial conditions, working absolutely contactless with remote detection and without any sample preparation.
Hartstoffschichten und Oberfla Èchenmodifikationen, die durch Reibungsverschleiû oder thermisches und mechanisches Zyklieren von FGL-Proben erzeugt wurden, werden hier mittels IR-Radiometrie thermischer Wellen in Bezug auf die Tiefenprofilierung ihrer thermischen Eigenschaften untersucht. Diese Messungen geben direkte Information u Èber das Tiefenprofil der thermischen Parameter und u Èber damit verbundene andere Gro Èûen, z.B. die Dicke von Schichten unterschiedlicher thermischer Eigenschaften. Die IR-Radiometrie thermischer Wellen ist besonders gut fu Èr den Einsatz im industriellen Umfeld geeignet, da die Methode absolut kontaktlos arbeitet, u Èber gro Èûere Entfernungen hinweg zwischen Probe und Messsystem, und ohne eine besondere Probenvorbereitung eingesetzt werden kann.
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