Objective: To observe the clinical effect of warm needling moxibustion plus Kai Qing Long Suo tuina therapy (opening the Qing Long lock, one type of 'Eight and a Half Locks' tuina therapy) for cervical spondyl...Objective: To observe the clinical effect of warm needling moxibustion plus Kai Qing Long Suo tuina therapy (opening the Qing Long lock, one type of 'Eight and a Half Locks' tuina therapy) for cervical spondylosis of vertebral artery type (CSA). Methods: Sixty patients with CSA were randomly allocated into an observation group or a control group, with 30 cases in each group. The observation group was treated with warm needling moxibustion plus Kai Qing Long Suo tuina therapy, while the control group was treated with warm needling moxibustion alone. Warm needling moxibustion was conducted once every other day and tuina was con ducted once a day, 7-day treatme nts for one course. The clin ical efficacy and vertebral artery blood flow was observed after one course of treatment. Results: After treatment, the total effective rate was 93.3% in the observation group versus 80.0% in the control group, and there was a significant differenee between the two groups (P<0.05). After treatment, the systolic blood flow velocity of vertebral artery increased in both groups, with statistical significanee compared with that before treatment (both P<0.05), and the blood flow velocity in the observation group was faster than that in the control group, with statistical significanee between the two groups (P<0.05). Conclusion: Both warm needling moxibustion plus Kai Qing Long Suo tuina therapy and warm needling moxibustion alone are both effective for CSA, can improve the systolic blood flow velocity of vertebral artery. The curative effect of warm needling moxibusiton plus Kai Qing Long Suo tuina therapy is better than that of warm needling moxibustion alone.展开更多
A new structural system called a stepped wall-frame structure is proposed in this study to solve the bottom yielding problem of RC frames, which widely occurred during previous earthquakes such as thc Wcnchuan and Yus...A new structural system called a stepped wall-frame structure is proposed in this study to solve the bottom yielding problem of RC frames, which widely occurred during previous earthquakes such as thc Wcnchuan and Yushu earthquakes in China. A 1/5 scale ordinary RC frame model and a stepped wall-frame model were subjected to shake table motions together to study the seismic behavior of the new structural system. This paper presents the dynamic characteristics, the seismic responses and the failure and collapse mechanism of the two models under low, moderate and high intensity shaking. The test results and further analysis demonstrate that the seismic performance of stepped wall-frame structures is superior to ordinary RC frames in terms of the well-controlled deformation pattern and more uniformly distributed damage. The stepped wall can effectively suppress the bottom yielding mechanism, and is simple, economical and practical tbr engineering practice.展开更多
Titanium alloys are common biomedical materials due to their biocompatibility and mechanical performance.However,titanium alloys are expensive and,unless surface treated,generally cannot prevent surgical infections re...Titanium alloys are common biomedical materials due to their biocompatibility and mechanical performance.However,titanium alloys are expensive and,unless surface treated,generally cannot prevent surgical infections related to bacteria which can damage the integrity of the implant.In this study,new titanium alloys were developed via powder metallurgy and the addition of manganese and copper,respectively,aiming to limit the manufacturing costs and induce new functionality on the materials including antibacterial response.The addition of manganese and copper to titanium significantly changes the behaviour of the Ti-Mn-Cu alloys leading to the successful stabilization of the beta titanium phase,great refinement of the typical lamellar structure,and achievement of materials with low level of porosity.Consequently,it is found that the mechanical performance and the antibacterial efficacy are enhanced by the addition of a higher amount of alloying elements.The manufactured Ti-Mn-Cu alloys fulfil the requirements for structural biomedical implants and have antibacterial response making them potential candidates for permanent medical implants.展开更多
文摘Objective: To observe the clinical effect of warm needling moxibustion plus Kai Qing Long Suo tuina therapy (opening the Qing Long lock, one type of 'Eight and a Half Locks' tuina therapy) for cervical spondylosis of vertebral artery type (CSA). Methods: Sixty patients with CSA were randomly allocated into an observation group or a control group, with 30 cases in each group. The observation group was treated with warm needling moxibustion plus Kai Qing Long Suo tuina therapy, while the control group was treated with warm needling moxibustion alone. Warm needling moxibustion was conducted once every other day and tuina was con ducted once a day, 7-day treatme nts for one course. The clin ical efficacy and vertebral artery blood flow was observed after one course of treatment. Results: After treatment, the total effective rate was 93.3% in the observation group versus 80.0% in the control group, and there was a significant differenee between the two groups (P<0.05). After treatment, the systolic blood flow velocity of vertebral artery increased in both groups, with statistical significanee compared with that before treatment (both P<0.05), and the blood flow velocity in the observation group was faster than that in the control group, with statistical significanee between the two groups (P<0.05). Conclusion: Both warm needling moxibustion plus Kai Qing Long Suo tuina therapy and warm needling moxibustion alone are both effective for CSA, can improve the systolic blood flow velocity of vertebral artery. The curative effect of warm needling moxibusiton plus Kai Qing Long Suo tuina therapy is better than that of warm needling moxibustion alone.
基金Special Fund for Earthquake Research under Grant No.201208013National key Technology R&D Program under Grant No.2012BAK15B05Basic Research Fund of Institute of Engineering Mechanics,CEA under Grant No.2010A04
文摘A new structural system called a stepped wall-frame structure is proposed in this study to solve the bottom yielding problem of RC frames, which widely occurred during previous earthquakes such as thc Wcnchuan and Yushu earthquakes in China. A 1/5 scale ordinary RC frame model and a stepped wall-frame model were subjected to shake table motions together to study the seismic behavior of the new structural system. This paper presents the dynamic characteristics, the seismic responses and the failure and collapse mechanism of the two models under low, moderate and high intensity shaking. The test results and further analysis demonstrate that the seismic performance of stepped wall-frame structures is superior to ordinary RC frames in terms of the well-controlled deformation pattern and more uniformly distributed damage. The stepped wall can effectively suppress the bottom yielding mechanism, and is simple, economical and practical tbr engineering practice.
基金The authors would like to acknowledge the financial support from New Zealand Ministry of Business,Innovation and Employment(MBIE)through the TiTeNZ(Titanium Technologies New Zealand)UOWX1402 research contractL.Bolzoni would also like to acknowledge the financial support from the University of Waikato via the Strategic Research Funding scheme。
文摘Titanium alloys are common biomedical materials due to their biocompatibility and mechanical performance.However,titanium alloys are expensive and,unless surface treated,generally cannot prevent surgical infections related to bacteria which can damage the integrity of the implant.In this study,new titanium alloys were developed via powder metallurgy and the addition of manganese and copper,respectively,aiming to limit the manufacturing costs and induce new functionality on the materials including antibacterial response.The addition of manganese and copper to titanium significantly changes the behaviour of the Ti-Mn-Cu alloys leading to the successful stabilization of the beta titanium phase,great refinement of the typical lamellar structure,and achievement of materials with low level of porosity.Consequently,it is found that the mechanical performance and the antibacterial efficacy are enhanced by the addition of a higher amount of alloying elements.The manufactured Ti-Mn-Cu alloys fulfil the requirements for structural biomedical implants and have antibacterial response making them potential candidates for permanent medical implants.
