Publications by authors named "R V WERZ"
Article Synopsis
- The study describes a multi-step synthesis of 2-diazo-3-oxo-4-phthalimidocarboxylic esters from methionine, S-benzylcysteine, and S-allylcysteine.
- Upon rhodium-catalyzed dediazoniation, two types of carbenoid reactions occur, leading to the formation of different ylides, where S-methyl and S-benzyl ylides could be isolated while S-allyl ylide underwent rearrangement.
- The short-lived carbonyl ylides produced from methionine and S-benzylcysteine form dimers and can react with dipolarophiles, while the S-allyl derivative leads to a
Background: In Germany, the dental technician is required by the Medical Products Act (MPG) to produce workpieces of high safety and quality and to document these properties. Soldering continues to be the prevailing joining technique in the dental laboratory, although problems arise from the susceptibility to corrosion and the low strength of soldered joints. This study aimed to reveal sources of defects in dental laboratory workpieces in order to achieve optimization in terms of quality assurance.
View Article and Find Full Text PDFUnlabelled: AIM of the study was to find out wether there is a common stop of growth of mandibular bone, so that no individual determination of the optimal time for surgery in patients with asymmetric mandibular bone growth is needed. As there are no epiphyseal plates in the mandibular bone, stop of growth cannot be determined on X-ray films.
Methods: Bone scans of 731 patients [687 patients (324 male, 363 female) under 39 y for exact determination of end of growth and 44 (21 male, 23 female) patients over 40 y for evaluation of non-growth dependent differences in tracer uptake] were reviewed for the study.
[About the role of carbonic acid in oxygen poisoning].
Naunyn Schmiedebergs Arch Exp Pathol Pharmakol
October 2008