Through generous cooperation by custodians of several museums, libraries, and government archive centers, the author has had occasion to explore various historical dental relics and reports covering the evolution of dental art and science over a period ranging from the time of George Washington to that of Adolf Hitler [1,2]. When the Berlin dentist, Dr. Hugo Johannes Blaschke, who cared for Ger...

von Braun Cyanogen Bromide Reaction, Solasodine, 13C NMR Solasodine on reaction with BrCN yielded two isomeric cyanamides in a ratio of 3:1, which have been characterised as C-22 configurational isomers, N-cyanosolasodine (22 R, 25 R) I IA and N-cyanosolasodine (22 S, 25 Rj II B on the basis of HI and *3C NMR studies. The same reaction with piperidine, yielded its cyanamide, the 13C NMR of whic...

Aim of study: The goal the study was to estimate true species richness from Braun Blanquet (BB) scale data.
 Area Yazılı Canyon Nature Park (YCNP) located in Mediterranean Region Turkey.
 Material and methods: A bias-corrected approach adapted based on Good-Turning frequency formula (S_est ) for 9 vegetation plots under three scenarios (Rare are singletons: with 1/1 probability 〖(Sc〗_...