purpose: to compare the safety, efficacy, and visual results of laser in situ keratomileusis (lasik) in eyes with and without previous scleral buckling surgery in the same individuals. methods: in a prospective clinical trial, 14 eyes of 7 patients with myopic refractive error and history of scleral buckling in one eye, underwent lasik surgery in both eyes according to a standard surgical proto...

The Eastern Sichuan area is a typical fold-and-impulse zone. It bounded by the Qiyue Mountain fault, with septal folds on east and west. Based previous geological mapping surface structure research as well fault-related folding theory, in this study, tectonophysical simulation experiments were conducted to investigate tectonic geometry kinematics of fold-impulse selecting different experimental...

introduction: there are different methods to repair retinal detachment. in this trial the retinopexy in repairmen of retinal regmatogenesis rd is compared with other methods in qazvin teaching hospitals during 1993-2003. methods: this out come study was conducted on 47 patients with s/b and retinal break cryopexy (group i) , 30 patients undergoing s/b with barrier laser photocoagulation around ...

Lisa Cay Miller is a pianist/composer/improviser and Artistic Director of the NOW Society. In this piece, she offers poetic description technological challenges associated with large-scale sequential improvisation project in which thirty-six musicians two sound engineers collaborated one another to produce total thirty-eight videos improvised musical performances.

Continental fold-thrust belts display a variety of structural styles, ranging from thin-skinned thrusts following weak lithologic contacts to thick-skinned that deform mechanical basement. The common practice splitting into and map domains has not yielded predictive model the primary controls on style. Within Mesozoic-Paleogene Idaho-Montana belt (44°N-45°N, 112°W-114°W), we identify crosscutti...

Balanced regional cross sections based on surface, seismic, and subsurface data show that the thin-skinned fold-and-thrust belt in Rocky Mountain Foothills of Kakwa area central Canadian Rockies consists a lower buried thrust developed Paleozoic Triassic strata an upper exposed faulted fold Jurassic to Cretaceous strata. Changes wavelength, amplitude, geometry with stratigraphic level indicate ...

Various mechanisms have been proposed for the dynamic cause and kinematic development of gneiss domes. They include (1) diapiric fl ow induced by density inversion, (2) buckling under horizontal constriction (i.e., extension perpendicular to compression), (3) coeval orthogonal contraction or superposition of multiple phases of folding in different orientations, (4) instability induced by vertic...

A dog was presented with history of progressive generalized subcutaneous emphysema and exercise intolerance secondary to dog fight. Radiographic evaluation confirmed extensive subcutaneous emphysema, pneumomediastinum and pneumoretroperitoneum. Surgical exploration revealed cricoid cartilage longitudinal fracture and cricotracheal detachment. The fractured cartilage was sutured and the cricoid ...