Qing-ming Shen

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An ultra-high-speed spectral domain optical Doppler tomography (SD-ODT) system is used to acquire images of blood flow in a human retina in vivo, at 29,000 depth profiles (A-lines) per second and with data acquisition over 99% of the measurement time. The phase stability of the system is examined and image processing algorithms are presented that allow(More)
A novel indoor positioning system based on received signal strength (RSS) in wireless networks with high accuracy is presented in this paper. The three improvement mechanisms, called signal strength filter, user location filter and path tracking assistance, are employed to improve the positioning accuracy of the system. The comprehensive performance of the(More)
Bismuth-based nanostructures have attracted growing interest because of their promising thermoelectric properties and applications in optics and electronics. Pulsed sonoelectrochemical technique was selected to fabricate bismuth-antimony (BiSb) flake-like alloy in ethylene glycol aqueous solution. The formation mechanism for the BiSb alloy was discussed.(More)
OBJECTIVE To retrospectively analyze the experiences and results of the treatment on 62 patients with primary varicose of lower extremities with endovenous laser. METHODS All patients were treated with endovenous laser. The laser treatment could begin when the fiber withdraw with 1 cm/2 s. The laser power was 10 - 12 w with the laser pulse duration and(More)
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