Petrochemical storage tanks are generally inspected when the tank is offline mostly to assess the extent of underside corrosion on the tank floor. Emptying, cleaning and opening a tank for inspection take many months ...Petrochemical storage tanks are generally inspected when the tank is offline mostly to assess the extent of underside corrosion on the tank floor. Emptying, cleaning and opening a tank for inspection take many months and are very expensive. Inspection costs can be reduced significantly by inserting robots through manholes on the tank roof to pertbrm non-destructive testing （NDT）. The challenge is to develop robots that can operate safely in explosive and hazardous environments and measure the thickness of floor plates using ultrasound sensors. This paper reports on the development of a small and inexpensive prototype robot （NDTBOT） which is designed to be intrinsically safe for zone zero operation. The robot ＂hops＂ across the floor to make measurements, without any external moving parts. The paper describes the design, experimental testing of the NDTBOT and presents results of steel plate thickness measurements made under water.展开更多
Objective To observe the clinical efficacy of treating postherpetic neuralgia （PHN） by combining floating-acupuncture laser with cupping following collateral bloodletting, and to analyze its mechanism. Method One hu...Objective To observe the clinical efficacy of treating postherpetic neuralgia （PHN） by combining floating-acupuncture laser with cupping following collateral bloodletting, and to analyze its mechanism. Method One hundred and thirty cases of PHN were randomly divided into a floating-acupuncture laser with cupping following collateral bloodletting group （group A） and an electroacupuncture group （group B） based on the treatment sequence and according to the random number table, with 65 cases in each group. In the group B, G-6805 electroacupuncture apparatus was adopted after the arrival of qi through even reinforcing and reducing （even method） in such acupoints as Hegu （合俗 LI 4）, Taihong （太冲 LR 3）, Zhigou （支沟 TE 6）, Quchi （ 曲池 LI 11） and Zusanli （足三里 ST 36）; in the group A, the treatment combining floatingacupuncture laser with cupping following collateral bloodletting was adopted, and the score of VAS and clinical efficacy before and after treatment in the two groups were compared. Result The differences of VAS scores of the two groups between the time points of after one course of treatment, after the entire treatment, follow up visit three months after the treatment and before treatment were statistically significant （all P〈0.05）. The rate of significant efficiency and total effective rate in the group A were respectively 37.8% and 98.5% （64/65）, and 11.2% and 78.5% （52/65） in the group B. The difference between the two groups was statistically significant after Ridit analysis （P〈0.05）. Conclusion The efficacy of treating PHN by combining floating-acupuncture laser with cupping following collateral bloodletting was significant.展开更多
文摘Petrochemical storage tanks are generally inspected when the tank is offline mostly to assess the extent of underside corrosion on the tank floor. Emptying, cleaning and opening a tank for inspection take many months and are very expensive. Inspection costs can be reduced significantly by inserting robots through manholes on the tank roof to pertbrm non-destructive testing （NDT）. The challenge is to develop robots that can operate safely in explosive and hazardous environments and measure the thickness of floor plates using ultrasound sensors. This paper reports on the development of a small and inexpensive prototype robot （NDTBOT） which is designed to be intrinsically safe for zone zero operation. The robot ＂hops＂ across the floor to make measurements, without any external moving parts. The paper describes the design, experimental testing of the NDTBOT and presents results of steel plate thickness measurements made under water.
文摘Objective To observe the clinical efficacy of treating postherpetic neuralgia （PHN） by combining floating-acupuncture laser with cupping following collateral bloodletting, and to analyze its mechanism. Method One hundred and thirty cases of PHN were randomly divided into a floating-acupuncture laser with cupping following collateral bloodletting group （group A） and an electroacupuncture group （group B） based on the treatment sequence and according to the random number table, with 65 cases in each group. In the group B, G-6805 electroacupuncture apparatus was adopted after the arrival of qi through even reinforcing and reducing （even method） in such acupoints as Hegu （合俗 LI 4）, Taihong （太冲 LR 3）, Zhigou （支沟 TE 6）, Quchi （ 曲池 LI 11） and Zusanli （足三里 ST 36）; in the group A, the treatment combining floatingacupuncture laser with cupping following collateral bloodletting was adopted, and the score of VAS and clinical efficacy before and after treatment in the two groups were compared. Result The differences of VAS scores of the two groups between the time points of after one course of treatment, after the entire treatment, follow up visit three months after the treatment and before treatment were statistically significant （all P〈0.05）. The rate of significant efficiency and total effective rate in the group A were respectively 37.8% and 98.5% （64/65）, and 11.2% and 78.5% （52/65） in the group B. The difference between the two groups was statistically significant after Ridit analysis （P〈0.05）. Conclusion The efficacy of treating PHN by combining floating-acupuncture laser with cupping following collateral bloodletting was significant.
