Learn More
The techniques, based on formal series and combinatorics, used nowadays to analyze numerical integrators may be applied to perform high-order averaging in oscillatory periodic or quasi-periodic dynamical systems. When this approach is employed, the averaged system may be written in terms of (i) scalar coefficients that are universal, i.e. independent of the(More)
Presence of the bacterial kidney disease in salmonid fish in Quebec During the summers of 1979 and 1980, wild and hatchery fish were analysed for the presence of the bacterial kidney disease (BKD) agent in salmonid fish in Quebec by the indirect immunofluorescence technique. The causative agent of BKD was detected in all hatcheries tested. Ten to 25% of the(More)
For some patients in hemodialysis, repeated failure of conventional access routes requires consideration of unusual forms of access. For others, peritonitis or other problems may temporarily restrict the use of peritoneal route. We report our experience with Tenckhoff peritoneal dialysis catheter implanted into the superior vena cava through a venotomy in(More)
The authors report a case of a 58 year old male presenting with bilateral ureteral compression by peri-aneurysmal retroperitoneal fibrosis. A ureterolysis and prosthetic replacement of the abdominal aorta gave good results. Eighteen months postoperatively, proteinuria and an edema of the lower limbs revealed an extramembranous glomerulitis, for which no(More)