Advanced Materials Research Vols. 1061-1062

Abstract: A water-soluble fluorescent probe was described for detecting hydrogen peroxide with the naphthalimide derived as fluorophore and boronate moiety as recognition unit. The probe was developed as a turn-on fluorescent chemosensor with fast, high selectivity and sensitivity toward H₂O₂ over other biological reactive oxygen species. What is more, the probe was linear response to H₂O₂ concentration in the range of 2.5×10⁻⁸ – 3.2×10⁻⁵ M and lower detection limit down to 12 nM (S / N = 3) was obtained.

Abstract: For the difficulty of coating weak bonding strength measurement, we proposed coating weak bonding strength measurement method and apparatus based on laser-induced shock wave. This apparatus contained the laser, the beam splitter, the photodiode, the convex lens, acoustic emission sensors and the oscilloscope. First the distance of the focus and the circular area was calculated by the interaction of laser-induced shock wave and the measurement object. The acoustic emission sensor was moved to the same distance, which was used to measure the shock wave propagation time under the same power laser beam. Finally, coating weak bonding strength is calculated by the laser-induced shock wave propagation equation. The experimental results showed that the present method and apparatus can measure weak binding strength of the coating, which provides an important reference for the coating bond strength measurement.

Abstract: In the present work, glasses of the As-S-I system have been synthesized, the region of glasses stable in moist air has been investigated, the properties of the glasses have been determined.

Abstract: In this paper, the far field of GaN based laser diode is discussed by using numerical simulation method. Results show that, the divergence angle θ_⊥ of far field increased with the thickness of the waveguide layer as exponential decay and the divergence angle θ_// of far field increased with the thickness of the waveguide layer. The aspect ratio of far field distribution increased with increasing the thickness of the waveguide layer as exponential decay.

Abstract: The resolver is widely used in the production applications due to the robust mounting and high accuracy at full range. However, the mounting accuracy of such sensors will significantly limit the torque accuracy and performance if the initial positions are not calibrated at the end-of-line (EOL) test. An initial position EOL test system is designed base on the production requirements. A simple initial position measurement method is introduced and applied to the PMSM motor, which measures the back EMF and the North mark (NM) signal of the resolver. The time difference between the back EMF zero crossing point and NM signal is divided by the back EMF period and then the initial position is calculated. The method is validated on the target bench and experiments prove the EOL test system is suit for the mass production.

Abstract: The study and application of machine vision technique for the detection of agricultural products, which includes the quality detection and grading of fruits, dried fruits, vegetables, are discussed. It summarizes the existing problems of detection and grading of agricultural products based on machine vision, and analyzes the methods of solving problems through establishing a national collaborative innovation center.

Abstract: A device has been designed to measure the whole stiffness which is behalf of paper plate’s carrying capacity. When the device was working, one end of the paper plate was hold as a hand did, the other end of the paper plate was pushed to 15°angle from the horizontal surface, and the force on the paper plate was recorded. Comparing load-bearing performance, the whole stiffness is more accurate to reveal the differences of the paper plates.

Abstract: Silicate analyzer is broadly used for determination of silicate in water. It is very important to evaluate its performance and needed to be calibrated by metrology organizations. But there is no standard or regulation for silicate analyzer calibration in our country. The calibration methods of silicate analyzer was suggested on the basis of the function characteristics of the instrument. The experimental results prove that this method can evaluate the performance of silicate analyzer accurately and comprehensively.

Abstract: Through the statistics of AVC system equipment availability, closed loop rate, action number and success rate, analyses the operation of AVC system in Fuzhou power grid, there are still many problems, such as closed loop rate is not high, some AVC substation remote low success rate.In order to effectively improve the pertinent measures from the design, operation and maintenance, fixed value management etc..

Abstract: This paper analyzes the influence of ChangJiu High-speed Railway on power quality. Compared with the traditional AC-DC electric locomotive, AC-DC-AC electric locomotive has been widely used in High-speed Railway which harmonic content decreased significantly, power factor also improved. Based on the RTDS simulation, voltage sags have not been caused when electric locomotive is starting.