In order to explore the extraction method of carotenoids from citrus leaves,the extraction effect of carotenoids from leaves of Honey pomelo by ultrasonic-assisted extraction was investigated by single factor experime...In order to explore the extraction method of carotenoids from citrus leaves,the extraction effect of carotenoids from leaves of Honey pomelo by ultrasonic-assisted extraction was investigated by single factor experiment and orthogonal experiment.The results showed that the optimum extraction condition was:the ration of ethanol and acetone 1∶1(v/v,containing 0.1%BHT),solid-liquid ratio 1∶30(g/mL),extraction time 7 min,ultrasonic power 240 W,extraction frequency 3 times.Under the above condition,the extraction rate of carotenoids was 85.98%.展开更多
The classified prescriptions from Chaihu decoction have been widely used in ancient and modern times.In spite of many previous research studies,the extensiveness and diversity of their applications have not been syste...The classified prescriptions from Chaihu decoction have been widely used in ancient and modern times.In spite of many previous research studies,the extensiveness and diversity of their applications have not been systematically studied.The author applied Chaihu Wendan decoction to treat phlegm and qi stagnation in the middle energizer,applied Chaihu Guizhi decoction to treat simultaneous disease of Shaoyang and Taiyang,applied Chaihu Xiexin decoction to treat simultaneous disease of the spleen,stomach,liver,and gallbladder,applied Chaihu Ermiao powder to treat simultaneous disease of hand Shaoyang and foot Taiyin,applied Chaihu Erchen decoction to treat simultaneous disease of Shaoyang and Taiyin,applied Chailing decoction to treat simultaneous disease of hand Shaoyin and foot Taiyang,applied Chaihu Guizhi Ganjiang decoction to treat Shaoyang and Taiyin cold fluid retention and heat stagnation syndrome of Shaoyang complicated with Taiyin,applied Chaihu Xingren decoction to treat simultaneous disease of hand Shaoyang and hand Taiyin,applied Chaihu Sanren decoction to treat the disease caused by damp-heat stagnation in the hand Shaoyang and the foot Taiyin,and applied Chaihu Ganlu Xiaodu pellet to treat the diseases of hand Shaoyang and foot Yangming.The effects were all remarkable.展开更多
Diesel particulate matter （DPM） is considered to be carcinogenic after prolonged exposure. With more diesel- powered equipment used in underground mines, miners＇ exposure to DPM has become an increasing concern. Th...Diesel particulate matter （DPM） is considered to be carcinogenic after prolonged exposure. With more diesel- powered equipment used in underground mines, miners＇ exposure to DPM has become an increasing concern. This paper used computational fluid dynamics method to study the DPM dispersion in a dead-end entry with loading operation. The effects of different push-pull ventilation systems on DPM distribution were evaluated to improve the working conditions for underground miners. The four push-pull systems considered include： long push and short pull tubing; short push and long pull tubing, long push and curved pull tubing, and short push and curved pull tubing. A species transport model with buoyancy effect was used to examine the DPM dispersion pattern with unsteady state analysis. During the 200 s of loading operation, high DPM levels were identified in the face and dead-end entry regions. This study can be used for mining engineer as guidance to design and setup local ventilation, select DPM control strategies and for DPM annual training for underground miners.展开更多
文摘In order to explore the extraction method of carotenoids from citrus leaves,the extraction effect of carotenoids from leaves of Honey pomelo by ultrasonic-assisted extraction was investigated by single factor experiment and orthogonal experiment.The results showed that the optimum extraction condition was:the ration of ethanol and acetone 1∶1(v/v,containing 0.1%BHT),solid-liquid ratio 1∶30(g/mL),extraction time 7 min,ultrasonic power 240 W,extraction frequency 3 times.Under the above condition,the extraction rate of carotenoids was 85.98%.
基金supported by Jiangxi Provincial Health Department Chinese Medicine Research Program Project{[2004]No.28}.
文摘The classified prescriptions from Chaihu decoction have been widely used in ancient and modern times.In spite of many previous research studies,the extensiveness and diversity of their applications have not been systematically studied.The author applied Chaihu Wendan decoction to treat phlegm and qi stagnation in the middle energizer,applied Chaihu Guizhi decoction to treat simultaneous disease of Shaoyang and Taiyang,applied Chaihu Xiexin decoction to treat simultaneous disease of the spleen,stomach,liver,and gallbladder,applied Chaihu Ermiao powder to treat simultaneous disease of hand Shaoyang and foot Taiyin,applied Chaihu Erchen decoction to treat simultaneous disease of Shaoyang and Taiyin,applied Chailing decoction to treat simultaneous disease of hand Shaoyin and foot Taiyang,applied Chaihu Guizhi Ganjiang decoction to treat Shaoyang and Taiyin cold fluid retention and heat stagnation syndrome of Shaoyang complicated with Taiyin,applied Chaihu Xingren decoction to treat simultaneous disease of hand Shaoyang and hand Taiyin,applied Chaihu Sanren decoction to treat the disease caused by damp-heat stagnation in the hand Shaoyang and the foot Taiyin,and applied Chaihu Ganlu Xiaodu pellet to treat the diseases of hand Shaoyang and foot Yangming.The effects were all remarkable.
文摘Diesel particulate matter （DPM） is considered to be carcinogenic after prolonged exposure. With more diesel- powered equipment used in underground mines, miners＇ exposure to DPM has become an increasing concern. This paper used computational fluid dynamics method to study the DPM dispersion in a dead-end entry with loading operation. The effects of different push-pull ventilation systems on DPM distribution were evaluated to improve the working conditions for underground miners. The four push-pull systems considered include： long push and short pull tubing; short push and long pull tubing, long push and curved pull tubing, and short push and curved pull tubing. A species transport model with buoyancy effect was used to examine the DPM dispersion pattern with unsteady state analysis. During the 200 s of loading operation, high DPM levels were identified in the face and dead-end entry regions. This study can be used for mining engineer as guidance to design and setup local ventilation, select DPM control strategies and for DPM annual training for underground miners.
