Fiber lasers are rapidly gaining market shares for industrial applications due to compactness, high electrical-to-optical efficiency, high beam quality and low running cost. However, for directed energy weapons, fiber lasers have until now been unable to meet the requirements of military, where power levels around 100 kW are aimed for through combining of multiple, high beam quality lasers. The...

OBJECTIVES We sought to compare the prevalence of coronary atherosclerosis in a cohort of middle-age African American (black) and non-Hispanic Caucasian (white) men and women from a population-based probability sample. BACKGROUND Blacks have a higher mortality from coronary heart disease (CHD) than whites, particularly among younger individuals, and yet several studies have reported that coro...

The purpose of this study was to evaluate the white-matter changes associated with cranial radiation by MR imaging. The MR scans of 95 patients receiving conventional external beam radiation for a wide variety of central nervous system tumors were reviewed. Moderately T2-weighted spin-echo images with a 2000-msec repetition time and 56-msec-echo time were analyzed for white-matter abnormalities...

Polychromatic and wavelength-selective neutron transmission radiography were applied during bead-on-plate welding on 5 mm thick sheets the face side of martensitic low transformation temperature (LTT) steel plates using gas tungsten arc (GTAW). The in situ visualization austenitization upon subsequent α’-martensite formation cooling could be achieved with a temporal resolution 2 s for monochrom...

i p t r a o n u w n m t i i w t o c m t d o t d s t bstract. With the current trend of digital convergence in mobile hones, mobile manufacturers are researching how to develop a obile beam projector to cope with the limitations of a small screen ize and to offer a better feeling of movement while watching movies r satellite broadcasting. However, mobile beam projectors may roject an image on ar...