Proteoglycans Make the Grade-ient

Alternative tests make the grade.

Toxicity testing is absolutely necessary for assessing the safety of substances in food, air, and water, in the workplace and at home. Although there are several tried-and-true toxicity assays, the search is always on for methods that can even better predict toxic effects. As scientific understanding of the effects of environmental toxicants grows, new tests are needed to evaluate previously un...

Polarized photocathodes make the grade *

Future linear colliders will require high levels of performance from their electron sources. A group at SLAC has recently tested a structure that substantially exceeds current collider polarized electron source pulse-profile requirements. Published in CERN Courier 42 (September 2002), p 19. Work supported by Department of Energy contract DE–AC03–76SF00515.

Obtaining Memory - EÆ ient

Graded readers: How the publishers make the grade

Publishing graded readers is big business, but there is evidence that the texts themselves are not being read in sufficient quantity to improve language proficiency. This article reports on a study of graded readers, focusing on interviews with some major publishers of graded readers, to investigate their production rationales. The findings suggest that the opinions of the ultimate consumers, t...

Make the grade for Wegener's granulomatosis after kidney transplantation

Antineutrophil cytoplasmic antibodies-associated vasculitis (AAV) is a well-described cause of multiple organ involvement including rapidly progressive pauci-immune crescentic glomerulonephritis. Kidney transplantation (KTx) is considered the treatment of choice in patients with end-stage renal disease (ESRD) due to AAV. Patient and graft survival in AAV after KTx is favourable and comparable w...