1456 www.thelancet.com Vol 378 October 22, 2011 Global tuberculosis eff orts owe much to the leadership of Rear Admiral Kenneth Castro. As Director of the Division of Tuberculosis Elimination at the US Centers for Disease Control and Prevention (CDC), he leads a team of technical experts dedicated to tuberculosis elimination, prevention, and control activities in the USA and internationally. Bu...

An algorithm is presented for rapid traversal of octree data structures, in order to enhance the speed of ray tracing for scenes of high complexity. At each level of the octree, the algorithm generates the addresses of child voxels in the order they are penetrated by the ray. This requires only a few arithmetic operations and simple logical operations. A depth-first search of the tree is used t...

Snow is not the first man to be honoured for valor-ous acts he never accomplished , nor is he the first to have honest, partially successful work transformed into a miraculous success. On the 200th anniversary of Snow's death it is time to acknowledge the glorious failure to accept that Snow's cholera studies were not good enough. The problem is not Snow, but the mythology that has grown around...

introduction: file fracture is one of the main procedural mishaps in endodontic treatment. the aim of this in vitro study was to compare the fracture rate of three niti rotary systems; hero 642, mtwo and flexmaster in artificial canals. methods and materials: in this study, bovine long bone was used. after primary preparation of bones, longitudinal sections with 4-cm diameter were cut and encod...

The article examines the artistic specificity of lyrics Erzyan poet Dmitry Taganov, analyzes motif-image system his poetic experiments, defines author's place in modern national system, points out individual-author concepts that enrich Mordovian poetry. most common constants poetry are outlined: image home which reveals inner state a lyrical hero, recreates surrounding reality, indicates ongoin...

simulation and contrivance in hariri’s maghamat shaker amery * â  â abstractâ in the fourth century after hijra (a.h), many kinds of rhetoric arts became common and popular in literary texts. in that cultural atmosphere, the maghamat emerged. badi al-zaman al-hamadani was the first to write the maghamat in arabic literature in the second half of the fourth century (a.h). the principal recurre...