Search

In view of power quality problem caused by progressively increase of nonlinear devices of coal mine enterprise, evaluation index and comprehensive evaluation method of coal mine power quality were proposed. Firstly, evaluation index system of coal mine power quality was built according to influence of nonlinear equipment to coal mine power supply system; then, combination weight of evaluation index was decided by improved analytic hierarchy process (subjective weighting method) and entropy weight method (objective weighting method)finally, comprehensive evaluation of coal mine power quality was performed by combination of probability theory and fuzzy mathematics. Example analysis result verified rationality of evaluation index system and feasibility of the comprehensive evaluation method for coal mine power quality.

Considering that the patients would bear the annoyance of fixed posture for long time when they are examined with gastrointestinal wireless endoscopy, even though portable devices have been developed, the treatments still depend on PC so much, we proposed an embedded solution based on ARM + FPGA. It used embedded ARM9 S3C2440 as processor core, collected images from digestive tract through capsule endoscopy which can be swallowed down there, and wirelessly transferred these images to the receiving system, then used video decoder chip SAA7114H for analog of NTSC video image decode. And under FPGA's logic controlling, effective digital video signal was transferred to S3C2440 for further treatment. Finally within the embedded Linux environment, we programmed the visual user interfaces using the QT/Embedded, realizing the offline record of the real-time video images of digestive tract portable and preferences. It can make patients move more freely and even without PC when examining. In addition, the method greatly improves the efficiency of the doctor, and is more intelligent and with more humane nature.

Objective: Study the effect of self-microemulsifying drug delivery system(SMEDDS) on the solubility and absorption of tanshinones to guide the selection of composition of tanshinone SMEDDS., Method: The solubility of tanshinones in the solution of SMEDDS was determined by UV-spectrometer and the absorption of tanshinone SMEDDS was determined by HPLC as the detection method., Result: The solubility of tanshinones in solution of SMEDDS was 10 times in water and 2.5 times in micelle solution. The solubility of tanshinones in solution of SMEDDS was increased with the increasing of oil (MCT) in composition of tanshinone SMEDDS. The absorption constants (Ka) in SMEDDS and micelle solution was 0.479 h(-1) and 0.326 h(-1) respectively, and the absorption half life (t1/2) was 1.44 h and 2.12 h respectively. The absorption was increased with the oil increasing in composition of tanshinone SMEDDS., Conclusion: SMEDDS can increase the solubility and absorption of tanshinones significantly and the increasing of oil content (MCT) in SMEDDS composition promote the dissolution and absorption of tanshinones.