Abstract: An electrocatalyst, a method of producing hydrogen gas by a hydrogen evolution reaction, and a method of producing oxygen gas by an oxygen evolution reaction. The electrocatalyst includes manganese oxide nanoparticles, and silver containing nanoparticles disposed on the manganese oxide nanoparticles, the silver-containing nanoparticles include a shell of silver tungstate disposed on a core of Ag. The electrocatalyst has an electrical resistivity of 0.50×107 ohm (?) to 6.0×107?, a charge transfer resistance of 325? to 450?, a Tafel slope of 55 mV/dec to 125 mV/dec, and an overpotential at 10 mA/cm2 of 0.05 mV to 200 mV.

Abstract: An electrocatalyst, a method of producing hydrogen gas by a hydrogen evolution reaction, and a method of producing oxygen gas by an oxygen evolution reaction. The electrocatalyst includes manganese oxide nanoparticles, and silver containing nanoparticles disposed on the manganese oxide nanoparticles, the silver-containing nanoparticles include a shell of silver tungstate disposed on a core of Ag. The electrocatalyst has an electrical resistivity of 0.50×107 ohm (?) to 6.0×107?, a charge transfer resistance of 325? to 450?, a Tafel slope of 55 mV/dec to 125 mV/dec, and an overpotential at 10 mA/cm2 of 0.05 mV to 200 mV.

Abstract: A basic component of Computer-Aided Detection systems for digital mammography comprises generating candidate mass locations suitable for further analysis. A component is described that relies on filtering either the background image or the complementary foreground mammographic detail by a purely signal processing method on the one hand or a processing method based on a physical model on the other hand. The different steps of the signal processing approach consist of band-pass filtering the image by one or more band pass filters, multidimensional clustering, iso-contouring of the distance to centroid of the one or more filtered values, and finally candidate generation and segmentation by contour processing. The physics-based approach also filters the image to retrieve a fat-corrected image to model the background of the breast, and the resulting image is subjected to a blob detection filter to model the intensity bumps on the foreground component of the breast that are associated with mass candidates.

Abstract: The invention relates to a microfluidic device. The microfluidic device comprises a fluid chamber comprising a particle retention region for retaining at least one particle, such as a cell. The microfluidic device also comprises a plurality of electrodes extending into the particle retention region for applying a dielectrophoretic (DEP) force to controllably move the particle within the particle retention region. The invention also relates to methods of using the microfluidic device to controllably move the particle within the microfluidic device and to monitor, observe, or measure a parameter of the particle. The particle movement may be caused by a DEP force and/or a fluidic force.

Abstract: A basic component of Computer-Aided Detection systems for digital mammography comprises generating candidate mass locations suitable for further analysis. A component is described that relies on filtering either the background image or the complementary foreground mammographic detail by a purely signal processing method on the one hand or a processing method based on a physical model on the other hand. The different steps of the signal processing approach consist of band-pass filtering the image by one or more band pass filters, multidimensional clustering, iso-contouring of the distance to centroid of the one or more filtered values, and finally candidate generation and segmentation by contour processing. The physics-based approach also filters the image to retrieve a fat-corrected image to model the background of the breast, and the resulting image is subjected to a blob detection filter to model the intensity bumps on the foreground component of the breast that are associated with mass candidates.