Luis Fernando Ramírez, David Peña, Bernardo Ortíz, Freddy Buitrago. Invenciones modernas.

Programas, proyectos y red de portales

Dr. David Atkinson

Dr. Atkinson was the fourth President of Brock University. He was President from 1997 - 2005.

Dr. David McCarthy

Professor of Computer Science.

David Shemilt

Pictured here is Brock swimmer, and Olympian, David Shemilt on June 7, 1984.

David Shemilt

Brock's David Shemilt dives into the pool in June of 1984

The application of gas liquid chromatography to the simultaneous analysis of sugars and sugar phosphates in biological samples /|nby David J. LeBlanc. -- 260 St. Catharines [Ont. : s. n.],

A study was undertaken' to determine the applicability of gas liquid chromatography to the simultaneous analysis of sugars and sugar phosphates from biological samples. A new method of silylation involving dimethylsulfoxide, hexamethyldisilazane, trimethylchlorosilane and cyclohexane (1:0.2:0.1:1) which rapidly silylated sugars and sugar phosphates was developed. Subsequent chromatography on a 5% SE-52 column gave good resolution of the sugar and sugar phosphate samples. Sugar phosphates decomposed during chromatography and were lost at the 7 x 10-3 ~mole level. Acidic ethanol extraction of yeast samples revealed background contamination from the yeast sample, the culture medium and the silylation reagents which would further limit the level of detection obtainable with the glc for sugars in biological samples to the 3 x 10-4 ~mole level.