An element-free Galerkin method(EFGM) is used to solve the two-dimensional(2D) ground penetrating radar(GPR)modelling problems, due to its simple pre-processing, the absence of elements and high accuracy. Different fr...An element-free Galerkin method(EFGM) is used to solve the two-dimensional(2D) ground penetrating radar(GPR)modelling problems, due to its simple pre-processing, the absence of elements and high accuracy. Different from element-based numerical methods, this approach makes nodes free from the elemental restraint and avoids the explicit mesh discretization. First, we derived the boundary value problem for the 2D GPR simulation problems. Second, a penalty function approach and a boundary condition truncated method were used to enforce the essential and the absorbing boundary conditions, respectively. A three-layered GPR model was used to verify our element-free approach. The numerical solutions show that our solutions have an excellent agreement with solutions of a finite element method(FEM). Then, we used the EFGM to simulate one more complex model to show its capability and limitations. Simulation results show that one obvious advantage of EFGM is the absence of element mesh, which makes the method very flexible. Due to the use of MLS fitting, a key feature of EFM, is that both the dependent variable and its gradient are continuous and have high precision.展开更多
To improve our understanding of the formation and evolution of the Moon, one of the payloads onboard the Chang＇e-3 （CE-3） rover is Lunar Penetrating Radar （LPR）. This investigation is the first attempt to explore...To improve our understanding of the formation and evolution of the Moon, one of the payloads onboard the Chang＇e-3 （CE-3） rover is Lunar Penetrating Radar （LPR）. This investigation is the first attempt to explore the lunar subsurface structure by using ground penetrating radar with high resolution. We have probed the subsur- face to a depth of several hundred meters using LPR. In-orbit testing, data processing and the preliminary results are presented. These observations have revealed the con- figuration of regolith where the thickness of regolith varies from about 4 m to 6 m. In addition, one layer of lunar rock, which is about 330 m deep and might have been accumulated during the depositional hiatus of mare basalts, was detected.展开更多
Purpose: To observe the clinical therapeutic effect of different needling methods in the treatment of peripheral facial paralysis. Methods: A total of 158 cases of peripheral facial palsy patients are randomly divided...Purpose: To observe the clinical therapeutic effect of different needling methods in the treatment of peripheral facial paralysis. Methods: A total of 158 cases of peripheral facial palsy patients are randomly divided into treatment group (n=116 cases, who are treated by penetration needling method) and control group (n=42 cases, who are treated with traditional acupuncture method). In treatment group, main acupoint pairs for penetration needling are Yangbai (GB 14) -Yuyao (EX-HN 4), Tongziliao (GB 1) -Taiyang (EX-HN 5), Jiache (ST 6) -Dicang (ST 4) and Chengjiang (CV 24) -Jiachengjiang (EX-HN) on the affected side, and in control group, the main acupoints used are Yifeng (TE 17), Yangbai (GB 14), Sibai (ST 2), Dicang (ST 4), Jiache (ST 6), Jingming (BL 1) and Chengjiang (CV 24). The treatment is given once daily with 10 sessions being a therapeutic course. Results: After 3 courses of treatment, the cure rates of treatment group and control group are 81.8% and 66.7% separately, showing a significant difference between two groups (P<0.05). The total effective rates of treatment and control groups are 96.5% and 88.1% separately, presenting a significant difference between two groups (P<0.01). Conclusion: The therapeutic effect of penetration needling method is better than that of traditional acupuncture method.展开更多
Objective: to analyze the effect of percutaneous treatment of peripheral facial paralysis. Methods: a total of 70 patients with peripheral facial paralysis in our hospital from January 2019 to January 2020 were select...Objective: to analyze the effect of percutaneous treatment of peripheral facial paralysis. Methods: a total of 70 patients with peripheral facial paralysis in our hospital from January 2019 to January 2020 were selected, and the number table was randomly divided into 2 groups, 35 patients in each group. Patients in the control group were given conventional treatment, and patients in the observation group were added to the conventional treatment. The scores of facial expression nerve palsy, quality of life and total effective rate were compared between the two groups before and after treatment. Results: after treatment, the scores of facial expression nerve palsy in the observation group were lower than those in the control group, while the scores of quality of life were higher than those in the control group, and the total effective rate was higher than that in the control group, P <0.05. Conclusion: percutaneous puncture is effective in the treatment of peripheral facial paralysis, which is beneficial to improve the facial nerve function and the quality of life of patients.展开更多
基金Project(41074085)supported by the National Natural Science Foundation of ChinaProject(NCET-12-0551)supported by the Funds for New Century Excellent Talents in University,ChinaProject supported by Shenghua Yuying Program of Central South University,China
文摘An element-free Galerkin method(EFGM) is used to solve the two-dimensional(2D) ground penetrating radar(GPR)modelling problems, due to its simple pre-processing, the absence of elements and high accuracy. Different from element-based numerical methods, this approach makes nodes free from the elemental restraint and avoids the explicit mesh discretization. First, we derived the boundary value problem for the 2D GPR simulation problems. Second, a penalty function approach and a boundary condition truncated method were used to enforce the essential and the absorbing boundary conditions, respectively. A three-layered GPR model was used to verify our element-free approach. The numerical solutions show that our solutions have an excellent agreement with solutions of a finite element method(FEM). Then, we used the EFGM to simulate one more complex model to show its capability and limitations. Simulation results show that one obvious advantage of EFGM is the absence of element mesh, which makes the method very flexible. Due to the use of MLS fitting, a key feature of EFM, is that both the dependent variable and its gradient are continuous and have high precision.
基金Supported by the National Natural Science Foundation of China
文摘To improve our understanding of the formation and evolution of the Moon, one of the payloads onboard the Chang＇e-3 （CE-3） rover is Lunar Penetrating Radar （LPR）. This investigation is the first attempt to explore the lunar subsurface structure by using ground penetrating radar with high resolution. We have probed the subsur- face to a depth of several hundred meters using LPR. In-orbit testing, data processing and the preliminary results are presented. These observations have revealed the con- figuration of regolith where the thickness of regolith varies from about 4 m to 6 m. In addition, one layer of lunar rock, which is about 330 m deep and might have been accumulated during the depositional hiatus of mare basalts, was detected.
文摘Purpose: To observe the clinical therapeutic effect of different needling methods in the treatment of peripheral facial paralysis. Methods: A total of 158 cases of peripheral facial palsy patients are randomly divided into treatment group (n=116 cases, who are treated by penetration needling method) and control group (n=42 cases, who are treated with traditional acupuncture method). In treatment group, main acupoint pairs for penetration needling are Yangbai (GB 14) -Yuyao (EX-HN 4), Tongziliao (GB 1) -Taiyang (EX-HN 5), Jiache (ST 6) -Dicang (ST 4) and Chengjiang (CV 24) -Jiachengjiang (EX-HN) on the affected side, and in control group, the main acupoints used are Yifeng (TE 17), Yangbai (GB 14), Sibai (ST 2), Dicang (ST 4), Jiache (ST 6), Jingming (BL 1) and Chengjiang (CV 24). The treatment is given once daily with 10 sessions being a therapeutic course. Results: After 3 courses of treatment, the cure rates of treatment group and control group are 81.8% and 66.7% separately, showing a significant difference between two groups (P<0.05). The total effective rates of treatment and control groups are 96.5% and 88.1% separately, presenting a significant difference between two groups (P<0.01). Conclusion: The therapeutic effect of penetration needling method is better than that of traditional acupuncture method.
文摘Objective: to analyze the effect of percutaneous treatment of peripheral facial paralysis. Methods: a total of 70 patients with peripheral facial paralysis in our hospital from January 2019 to January 2020 were selected, and the number table was randomly divided into 2 groups, 35 patients in each group. Patients in the control group were given conventional treatment, and patients in the observation group were added to the conventional treatment. The scores of facial expression nerve palsy, quality of life and total effective rate were compared between the two groups before and after treatment. Results: after treatment, the scores of facial expression nerve palsy in the observation group were lower than those in the control group, while the scores of quality of life were higher than those in the control group, and the total effective rate was higher than that in the control group, P <0.05. Conclusion: percutaneous puncture is effective in the treatment of peripheral facial paralysis, which is beneficial to improve the facial nerve function and the quality of life of patients.
