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Network lifetime is of great importance in WBANs that significantly influences the network performance and user experience. Among all the solutions to extend the network lifetime, relay mechanism plays a crucial role. However, previous works only concentrate on energy efficiency of sensor nodes regardless of energy storage diversity among sensor nodes, which may severely limit the performance of enhancing...
Clinical data on survival rates reveal that all-ceramic dental prostheses are susceptible to fracture from repetitive occlusal loading. The objective of this review is to examine the underlying mechanisms of fatigue in current and future dental ceramics.The nature of various fatigue modes is elucidated using fracture test data on ceramic layer specimens from the dental and biomechanics literature...
pH-dependent aggregation of thiol-capped CdTe quantum dots (QDs) in solutions was observed with a confocal microscope. The average size of the QD aggregates increased from 28nm to 1.4μm as the pH decreased from 12 to 3. The basic condition improved the dispersion of QDs while the acidic condition caused the detachment of surface ligands, leading to the aggregation of QDs. A PL lifetime of 80ns was...
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