Background: Although Tai Ji Quan has been shown to relieve pain and improve functional mobility in people with knee osteoarthritis(OA), little is known about its potential benefits on gait characteristics among older ...Background: Although Tai Ji Quan has been shown to relieve pain and improve functional mobility in people with knee osteoarthritis(OA), little is known about its potential benefits on gait characteristics among older Chinese women who have a high prevalence of both radiographic and symptomatic knee OA. This study aims to assess the efficacy of a tailored Tai Ji Quan intervention on gait kinematics for older Chinese women with knee OA.Methods: A randomized controlled trial involving 46 older women in Shanghai, China, with clinically diagnosed knee OA. Randomized(1:1)participants received either a 60 min Tai Ji Quan session(n = 23) 3 times weekly or a 60 min bi-weekly educational session(n = 23) for 24 weeks.Primary outcomes were changes in gait kinematic measures from baseline to 24 weeks. Secondary outcomes included changes in scores on the Western Ontario and Mc Master University Osteoarthritis Index(WOMAC) and Short Physical Performance Battery(SPPB).Results: After 24 weeks the Tai Ji Quan group demonstrated better performance in gait velocity(mean difference, 8.40 cm/s, p = 0.01), step length(mean difference, 3.52 cm, p = 0.004), initial contact angle(mean difference, 2.19°, p = 0.01), and maximal angle(mean difference, 2.61°,p = 0.003) of flexed knees during stance phase compared to the control group. In addition, the Tai Ji Quan group showed significant improvement in WOMAC scores(p < 0.01)(mean difference,-4.22 points in pain, p = 0.002;-2.41 points in stiffness, p < 0.001;-11.04 points in physical function, p = 0.006) and SPPB scores(mean difference, 1.22 points, p < 0.001).Conclusion: Among older Chinese women with knee OA, a tailored Tai Ji Quan intervention improved gait outcomes. The intervention also improved overall function as indexed by the WOMAC and SPPB. These results support the use of Tai Ji Quan for older Chinese adults with knee OA to both improve their functional mobility and reduce pain symptomatology.展开更多
Mei symmetry and Mei conserved quantity of Appell equations for a variable mass holonomic system are investi- gated. Appell equations and differential equations of motion for a variable mass holonomic system are estab...Mei symmetry and Mei conserved quantity of Appell equations for a variable mass holonomic system are investi- gated. Appell equations and differential equations of motion for a variable mass holonomic system are established. A new expression of the total first derivative of the function with respect of time t along the systematic motional track curve, and the definition and the criterion of Mei symmetry for Appell equations under the infinitesimal transformations of groups are given. The expressions of the structural equation and Mei conserved quantity for Mei symmetry in Appell are obtained. An example is given to illustrate the application of the results.展开更多
This paper focuses on studying Lie symmetries and conserved quantities of discrete nonholonomic Hamiltonian systems. Firstly, the discrete generalized Hamiltonian canonical equations and discrete energy equation of no...This paper focuses on studying Lie symmetries and conserved quantities of discrete nonholonomic Hamiltonian systems. Firstly, the discrete generalized Hamiltonian canonical equations and discrete energy equation of nonholonomic Hamiltonian systems are derived from discrete Hamiltonian action. Secondly, the determining equations and structure equation of Lie symmetry of the system are obtained. Thirdly, the Lie theorems and the conservation quantities are given for the discrete nonholonomic Hamiltonian systems. Finally, an example is discussed to illustrate the application of the results.展开更多
Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry ...Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry cal-culating method. The chemical bonding is studied to discuss the relation between structrues and properties. Several classes of models in which there is no vacancy,one vacancy or two vacan-cies have been calculated. From the calculated results of bond or-der, a measure of covalent bond strength,and molecule orbital contour map, it is concluded that when Nb element added in-creases, the vacancies increase correspondingly,the covalent com-ponent of chemical bonds of the samples decreases -while the met-al-bonding component increases, so the hardness and resistance of the samples decrease.展开更多
OBJECTIVE:To explore the prevention of urine retention after subabdominal surgery by electro-acupuncture Yin Ling Quan(SP 9),Zhao Hai(KI 6) acupoints with the assistance of subarachnoid acupoint anesthesia by observin...OBJECTIVE:To explore the prevention of urine retention after subabdominal surgery by electro-acupuncture Yin Ling Quan(SP 9),Zhao Hai(KI 6) acupoints with the assistance of subarachnoid acupoint anesthesia by observing the postoperative voiding time and urine volume of postoperative patients undergoing Electroacupuncture plus subarachnoid block anesthesia.METHODS:60 cases of preoperative expected for subarachnoid block surgery patients were randomly divided into two groups,the treatment group and the control group,with 30 cases in each group.The control group underwent routine subarachnoid anesthesia after surgery without acupuncture treatment group;The treatment group was treated with acupuncture bilateral Yin Ling Quan and Zhaohai acupoints 15 minutes before anesthesia,and then received unilateral electric anesthesia instrument treatment,the intensity of the patient was tolerable(generally 1.5 ~ 2.0 m A),and the routine subarachnoid block anesthesia was performed;The first urination time,urine volume,lower abdominal pain and assistant catheterization were recorded in the two groups.RESULTS:The first postoperative voiding time of the treatment group was significantly earlier compared with that of the control group,there was significant difference(P<0.05);the amount of urine was significantly more than that of the control group in reservation time,there was significant difference(P<0.05);the abdominal pain was light in the treatment group,there was significant difference(P<0.05);the cases of assisted catheterization of the control group were significantly more thanthose of the treatment group,there was significant difference(P< 0.05).CONCLUSION:Electro-acupuncture Yin Ling Quan(SP 9),Zhao Hai(KI 6) acupoints with the assistance of subarachnoid acupoint anesthesia could significantly reduce the urine retention after subabdominal surgery in postoperative patients with ubarachnoid block anesthesiau,accelerate the recovery of bladder function and promote early postoperative urination in addition to relieving the abdominal symptoms after operation.展开更多
基金funded by the Shanghai City Committee of Science and Technology Key Project (No. 12490503200)the National Science Foundation for Distinguished Young Scholars of China (No. 81025022)
文摘Background: Although Tai Ji Quan has been shown to relieve pain and improve functional mobility in people with knee osteoarthritis(OA), little is known about its potential benefits on gait characteristics among older Chinese women who have a high prevalence of both radiographic and symptomatic knee OA. This study aims to assess the efficacy of a tailored Tai Ji Quan intervention on gait kinematics for older Chinese women with knee OA.Methods: A randomized controlled trial involving 46 older women in Shanghai, China, with clinically diagnosed knee OA. Randomized(1:1)participants received either a 60 min Tai Ji Quan session(n = 23) 3 times weekly or a 60 min bi-weekly educational session(n = 23) for 24 weeks.Primary outcomes were changes in gait kinematic measures from baseline to 24 weeks. Secondary outcomes included changes in scores on the Western Ontario and Mc Master University Osteoarthritis Index(WOMAC) and Short Physical Performance Battery(SPPB).Results: After 24 weeks the Tai Ji Quan group demonstrated better performance in gait velocity(mean difference, 8.40 cm/s, p = 0.01), step length(mean difference, 3.52 cm, p = 0.004), initial contact angle(mean difference, 2.19°, p = 0.01), and maximal angle(mean difference, 2.61°,p = 0.003) of flexed knees during stance phase compared to the control group. In addition, the Tai Ji Quan group showed significant improvement in WOMAC scores(p < 0.01)(mean difference,-4.22 points in pain, p = 0.002;-2.41 points in stiffness, p < 0.001;-11.04 points in physical function, p = 0.006) and SPPB scores(mean difference, 1.22 points, p < 0.001).Conclusion: Among older Chinese women with knee OA, a tailored Tai Ji Quan intervention improved gait outcomes. The intervention also improved overall function as indexed by the WOMAC and SPPB. These results support the use of Tai Ji Quan for older Chinese adults with knee OA to both improve their functional mobility and reduce pain symptomatology.
基金Project supported by the National Natural Science Foundation of China (Grant No. 10572021)the Preparatory Research Foundation of Jiangnan University,China (Grant No. 2008LYY011)
文摘Mei symmetry and Mei conserved quantity of Appell equations for a variable mass holonomic system are investi- gated. Appell equations and differential equations of motion for a variable mass holonomic system are established. A new expression of the total first derivative of the function with respect of time t along the systematic motional track curve, and the definition and the criterion of Mei symmetry for Appell equations under the infinitesimal transformations of groups are given. The expressions of the structural equation and Mei conserved quantity for Mei symmetry in Appell are obtained. An example is given to illustrate the application of the results.
基金supported by the National Natural Science Foundations of China (Grant No. 11072218)the Natural Science Foundation of Zhejiang Province of China (Grant No. Y6110314)
文摘This paper focuses on studying Lie symmetries and conserved quantities of discrete nonholonomic Hamiltonian systems. Firstly, the discrete generalized Hamiltonian canonical equations and discrete energy equation of nonholonomic Hamiltonian systems are derived from discrete Hamiltonian action. Secondly, the determining equations and structure equation of Lie symmetry of the system are obtained. Thirdly, the Lie theorems and the conservation quantities are given for the discrete nonholonomic Hamiltonian systems. Finally, an example is discussed to illustrate the application of the results.
文摘Nb-doped TiC ceramic,or (NbyTi1-y) Cx,in which amount of Nb element added is increased from zero to 40Wt. %, synthisized -with self-propagating high temperature synthesis,is studied with SCF-Xa-DV,a quantum chemistry cal-culating method. The chemical bonding is studied to discuss the relation between structrues and properties. Several classes of models in which there is no vacancy,one vacancy or two vacan-cies have been calculated. From the calculated results of bond or-der, a measure of covalent bond strength,and molecule orbital contour map, it is concluded that when Nb element added in-creases, the vacancies increase correspondingly,the covalent com-ponent of chemical bonds of the samples decreases -while the met-al-bonding component increases, so the hardness and resistance of the samples decrease.
文摘OBJECTIVE:To explore the prevention of urine retention after subabdominal surgery by electro-acupuncture Yin Ling Quan(SP 9),Zhao Hai(KI 6) acupoints with the assistance of subarachnoid acupoint anesthesia by observing the postoperative voiding time and urine volume of postoperative patients undergoing Electroacupuncture plus subarachnoid block anesthesia.METHODS:60 cases of preoperative expected for subarachnoid block surgery patients were randomly divided into two groups,the treatment group and the control group,with 30 cases in each group.The control group underwent routine subarachnoid anesthesia after surgery without acupuncture treatment group;The treatment group was treated with acupuncture bilateral Yin Ling Quan and Zhaohai acupoints 15 minutes before anesthesia,and then received unilateral electric anesthesia instrument treatment,the intensity of the patient was tolerable(generally 1.5 ~ 2.0 m A),and the routine subarachnoid block anesthesia was performed;The first urination time,urine volume,lower abdominal pain and assistant catheterization were recorded in the two groups.RESULTS:The first postoperative voiding time of the treatment group was significantly earlier compared with that of the control group,there was significant difference(P<0.05);the amount of urine was significantly more than that of the control group in reservation time,there was significant difference(P<0.05);the abdominal pain was light in the treatment group,there was significant difference(P<0.05);the cases of assisted catheterization of the control group were significantly more thanthose of the treatment group,there was significant difference(P< 0.05).CONCLUSION:Electro-acupuncture Yin Ling Quan(SP 9),Zhao Hai(KI 6) acupoints with the assistance of subarachnoid acupoint anesthesia could significantly reduce the urine retention after subabdominal surgery in postoperative patients with ubarachnoid block anesthesiau,accelerate the recovery of bladder function and promote early postoperative urination in addition to relieving the abdominal symptoms after operation.
