The Q-switched pulse and mode-locked pulse were investigated in an all-normal dispersion Yb-doped fiber laser (YDFL) based on the topological insulators (TIs) with mixing of polyvinyl alcohol (PVA) to produce Bi2Se3/PVA film or deposition on the end facet of fiber to manufacture TI-compatible fiber.Through the dark Bi2Se3/PVA films with large nonsa
As is well known, multi-hop range-free localization algorithms demonstrate pretty good performance in isotropic networks in which sensor nodes distribute evenly and densely.However, these algorithms are easily affected by network topology, causing a significant decrease in positioning accuracy.To improve the localization performance in anisotropic
Abstract: This article aims to analyze historical learning in social science subjects by inviting elementary school students to learn outside the classroom.During this time the obstacles in learning history are verbalism, monotony, and lack lotion of understanding of elementary school students about a historical event.Learning history can be maximi
Osteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that responds dramatically to nonsteroidal anti-inflammatory medications.An osteoid osteoma of the toe is very rare and arising in a pedal phalanx may be difficult to Protection diagnose.A 34-year-old male has local swelling and tenderness but there were no hy
Background Plastic cannulae have attracted increasing interest as an alternative to traditional metal needles with the aim of reducing cannulation-related complications.We investigated whether the substitution volumes during hemodiafiltration differ using these two types of needles in dialysis patients.Methods An intervention study involving 26 hem