目的:探讨腰部熏腰方联合物理因子治疗骨质增生腰痛的临床效果。方法:选择骨质增生性腰痛的患者86名,按照随机数字的方法分为两个组,对照组和观察组,每个组43名患者,对照组患者采用物理因子治疗,观察组患者在对照组治疗方法基础上给予...目的:探讨腰部熏腰方联合物理因子治疗骨质增生腰痛的临床效果。方法:选择骨质增生性腰痛的患者86名,按照随机数字的方法分为两个组,对照组和观察组,每个组43名患者,对照组患者采用物理因子治疗,观察组患者在对照组治疗方法基础上给予腰部熏蒸,对疼痛程度,血清分泌蛋白Dickkopf-1(DKK-1)和硬骨素水平,治疗效果,不良反应情况进行比较。结果:经过治疗后,对照组患者的疼痛评级指数(PRI),视觉模拟级评定(VAS),目前疼痛状况(PPI)评分,分别从(21.11±3.86)分,(8.13±1.35)分,(3.73±0.83)分降低为(13.51±3.15)分,(4.51±0.97)分,(1.57±0.48)分,观察组患者的PRI, VAS, PPI评分,分别从(20.86±4.01)分,(8.21±1.47)分,(3.86±0.79)分降低为(7.06±2.04)分,(2.36±0.87)分,(0.92±0.23)分,观察组患者的降低幅度大于对照组患者,数据差异均具有统计学意义(t=11.270,10.820,8.008,P<0.05)。观察组患者的治疗效果优于对照组患者,数据差异具有统计学意义(z=-3.253,P<0.05),在治疗过程中,两组患者的各项不良反应发生率的数据差异均不具有统计学意义(χ^2=0.345,1.012,0.000,P>0.05)。结论:使用腰部熏蒸联合物理因子治疗骨质增生腰痛的患者,可以缓解疼痛,提高治疗效果,安全性良好。展开更多
Turbidity currents represent a major agent for sediment transport in lakes, seas and oceans. In particu-lar, they formulate the most significant clastic accumulations in the deep sea, which become many of the world＇s...Turbidity currents represent a major agent for sediment transport in lakes, seas and oceans. In particu-lar, they formulate the most significant clastic accumulations in the deep sea, which become many of the world＇s most important hydrocarbon reservoirs. Several boreholes in the Qiongdongnan Basin, the north-western South China Sea, have recently revealed turbidity current deposits as significant hydrocarbon res-ervoirs. However, there are some arguments for the potential provenances. To solve this problem, it is es-sential to delineate their sedimentary processes as well as to evaluate their qualities as reservoir. Numerical simulations have been developed rapidly over the last several years, offering insights into turbidity current behaviors, as geologically significant turbidity currents are difficult to directly investigate due to their large scale and often destructive nature. Combined with the interpretation of the turbidity system based on high-resolution 3D seismic data, the paleotophography is acquired via a back-stripping seismic profile integrated with a borehole, i.e., Well A, in the western Qiongdongnan Basin; then a numerical model is built on the basis of this back-stripped profile. After defining the various turbidity current initial boundary conditions, includ-ing grain size, velocity and sediment concentration, the structures and behaviors of turbidity currents are investigated via numerical simulation software ANSYS FLUENT. Finally, the simulated turbidity deposits are compared with the interpreted sedimentary bodies based on 3D seismic data and the potential provenances of the revealed turbidites by Well A are discussed in details. The simulation results indicate that a sedimen-tary body develops far away from its source with an average grain size of 0.1 mm, i.e., sand-size sediment. Taking into account the location and orientation of the simulated seismic line, the consistence between normal forward simulation results and the revealed cores in Well A indicates that the turbidites should have been transported from Vietnam instead of Hainan Island. This interpretation has also been verified by the planar maps of sedimentary systems based on integration of boreholes and seismic data. The identification of the turbidity provenance will benefit the evaluation of extensively distributed submarine fans for hydro-carbon exploration in the deepwater areas.展开更多
Interest in the forming mechanism of sediment waves increases recently because of its significance on submarine engineering, sedimentary dynamics and hydrocarbon reservoir prediction in deep water. In this paper, the ...Interest in the forming mechanism of sediment waves increases recently because of its significance on submarine engineering, sedimentary dynamics and hydrocarbon reservoir prediction in deep water. In this paper, the time-averaged continuity equations and Reynolds-averaged Navier-Stokes equations are applied in the numerical simulation of fluid dynamics. The modeling results are used to illuminate the effects of topography on turbidity current and explore the origin of submarine sediment waves. The research results show that (1) deposition occurs firstly at the lower ramp due to the deceleration of fluid, increase of density, loss of flow capacity and longer duration of flow passage; (2) density increase at the upslope due to the local jam results in velocity decrease and pressure increase; (3) sediment waves begin to be formed and migrated toward upstream in an area far away from the source with in- crease of the turbidity events; (4) deposition becomes more slowly with decrease of grain sizes, but the shape and sequences of these deposits are controlled by topography, not grain size.展开更多
文摘目的:探讨腰部熏腰方联合物理因子治疗骨质增生腰痛的临床效果。方法:选择骨质增生性腰痛的患者86名,按照随机数字的方法分为两个组,对照组和观察组,每个组43名患者,对照组患者采用物理因子治疗,观察组患者在对照组治疗方法基础上给予腰部熏蒸,对疼痛程度,血清分泌蛋白Dickkopf-1(DKK-1)和硬骨素水平,治疗效果,不良反应情况进行比较。结果:经过治疗后,对照组患者的疼痛评级指数(PRI),视觉模拟级评定(VAS),目前疼痛状况(PPI)评分,分别从(21.11±3.86)分,(8.13±1.35)分,(3.73±0.83)分降低为(13.51±3.15)分,(4.51±0.97)分,(1.57±0.48)分,观察组患者的PRI, VAS, PPI评分,分别从(20.86±4.01)分,(8.21±1.47)分,(3.86±0.79)分降低为(7.06±2.04)分,(2.36±0.87)分,(0.92±0.23)分,观察组患者的降低幅度大于对照组患者,数据差异均具有统计学意义(t=11.270,10.820,8.008,P<0.05)。观察组患者的治疗效果优于对照组患者,数据差异具有统计学意义(z=-3.253,P<0.05),在治疗过程中,两组患者的各项不良反应发生率的数据差异均不具有统计学意义(χ^2=0.345,1.012,0.000,P>0.05)。结论:使用腰部熏蒸联合物理因子治疗骨质增生腰痛的患者,可以缓解疼痛,提高治疗效果,安全性良好。
基金The National Science and Technology Major Project of China under contract No.2011ZX05025-002-02the National Natural Science Foundation of China under contract Nos 41476032,91028009 and 40806019
文摘Turbidity currents represent a major agent for sediment transport in lakes, seas and oceans. In particu-lar, they formulate the most significant clastic accumulations in the deep sea, which become many of the world＇s most important hydrocarbon reservoirs. Several boreholes in the Qiongdongnan Basin, the north-western South China Sea, have recently revealed turbidity current deposits as significant hydrocarbon res-ervoirs. However, there are some arguments for the potential provenances. To solve this problem, it is es-sential to delineate their sedimentary processes as well as to evaluate their qualities as reservoir. Numerical simulations have been developed rapidly over the last several years, offering insights into turbidity current behaviors, as geologically significant turbidity currents are difficult to directly investigate due to their large scale and often destructive nature. Combined with the interpretation of the turbidity system based on high-resolution 3D seismic data, the paleotophography is acquired via a back-stripping seismic profile integrated with a borehole, i.e., Well A, in the western Qiongdongnan Basin; then a numerical model is built on the basis of this back-stripped profile. After defining the various turbidity current initial boundary conditions, includ-ing grain size, velocity and sediment concentration, the structures and behaviors of turbidity currents are investigated via numerical simulation software ANSYS FLUENT. Finally, the simulated turbidity deposits are compared with the interpreted sedimentary bodies based on 3D seismic data and the potential provenances of the revealed turbidites by Well A are discussed in details. The simulation results indicate that a sedimen-tary body develops far away from its source with an average grain size of 0.1 mm, i.e., sand-size sediment. Taking into account the location and orientation of the simulated seismic line, the consistence between normal forward simulation results and the revealed cores in Well A indicates that the turbidites should have been transported from Vietnam instead of Hainan Island. This interpretation has also been verified by the planar maps of sedimentary systems based on integration of boreholes and seismic data. The identification of the turbidity provenance will benefit the evaluation of extensively distributed submarine fans for hydro-carbon exploration in the deepwater areas.
基金Supported by the National Natural Science Foundation of China (Grant Nos. 40476025 and 40672089)Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences (Grant No. MSGL0506)+1 种基金National Basic Research Program of China (Grant No. 2007CB411700)the Research Foundation for Outstanding Young Teachers, China University of Geo-sciences (Wuhan) (Grant No. CUGQNL0604)
文摘Interest in the forming mechanism of sediment waves increases recently because of its significance on submarine engineering, sedimentary dynamics and hydrocarbon reservoir prediction in deep water. In this paper, the time-averaged continuity equations and Reynolds-averaged Navier-Stokes equations are applied in the numerical simulation of fluid dynamics. The modeling results are used to illuminate the effects of topography on turbidity current and explore the origin of submarine sediment waves. The research results show that (1) deposition occurs firstly at the lower ramp due to the deceleration of fluid, increase of density, loss of flow capacity and longer duration of flow passage; (2) density increase at the upslope due to the local jam results in velocity decrease and pressure increase; (3) sediment waves begin to be formed and migrated toward upstream in an area far away from the source with in- crease of the turbidity events; (4) deposition becomes more slowly with decrease of grain sizes, but the shape and sequences of these deposits are controlled by topography, not grain size.
