In this paper, a Pareto multiobjective optimization is performed to design new luminaires, finding the optimal forward current, number of LEDs and proper heatsink by taking into account the cost, the energy consumption and the impact on the environment (life cycle analysis from cradle to grave). Three commercialized white LEDs have been studied and modelled in terms of optical, electrical, ther...

OBJECTIVE Determine whether ambient light affects the accuracy of pulse oximetry readings. DESIGN Prospective, repeated-measures study. SETTING A photographic darkroom. SUBJECTS Forty-five faculty and students at a university, none of whom had pale skin, dark skin, or evidence of cardiopulmonary disease. Any nail polish was removed. METHODS Five light sources were individually tested: i...

OBJECTIVES To use the FT-Raman spectroscopy for evaluation the degree of polymerization of dental composite as a result of photo curing with a new light source in comparison to the conventional halogen light. MATERIALS AND METHODS In this study a new light source, based on a metal-halide lamp (TOPSPOT G12) was developed at NRC-Egypt for curing dental composites. Two groups of 108 composite sa...


 The circulation of Energy Saving Lamps or Self-Based in Indonesia, which promises the shape lamps, variations lamp power, life, comparison offered brightness, low power absorption with brighter light, has caused many people to switch from using tube lamps and incandescent other types lamps. this lamp. Indonesian Government regulation that requires LHE manufacturers include National Stand...