The test platform of wheat precision seeding based on image processing techniques is designed to develop the wheat precision seed metering device with high efficiency and precision. Using image processing techniques, this platform gathers images of seeds(wheat) on the conveyer belt which are falling from seed metering device. Then these data are processed and analyzed to calculate the qualified...

A nano-optical conveyor belt is a unique type of near-field optical tweezer, capable not only capturing nanoparticles, but also transporting them. In this study, we propose multichannel conveyer, based on simple rectangular distributed grating array. The design was optimized by varying the number slits in gratings, and particle transport achieved adjusting phase difference excitation beams. Sim...

We used sequential extractions to quantify different forms of particulate phosphorus (PP) in sediments along the salinity gradient of the Patuxent River estuary. About 50–90% of the PP was phosphate bound to iron oxides (Fe-P), and 8–30% was organic P (org-P). Loosely sorbed phosphate (sorb-P), detrital apatite, and authigenic plus biogenic apatite each made up ,10% of the PP. Suspended sedimen...

Current regulations for fire suppression systems in underground coal mines to protect conveyor belt installations have been in place since the Coal Mine Health and Safety Act of 1969 was enacted. Over time, the coal conveyer equipment being used and ventilation conditions underground have changed significantly, particularly the width of the conveyor belts and the use of belt air at the face. Th...

BACKGROUND Online interventions are aiming increasingly at cognitive outcome measures but so far no easy and fast self-monitors for cognition have been validated or proven reliable and feasible. OBJECTIVE This study examines a new instrument called the Brain Aging Monitor-Cognitive Assessment Battery (BAM-COG) for its alternate forms reliability, face and content validity, and convergent and ...