This study used Corona KH-4A and Advanced Land Observing Satellite (ALOS) PRISM images to generate digital terrain models (DTMs) of the distal part of Imja Glacier,where a few supraglacial ponds (～0.07 km 2) expanded...This study used Corona KH-4A and Advanced Land Observing Satellite (ALOS) PRISM images to generate digital terrain models (DTMs) of the distal part of Imja Glacier,where a few supraglacial ponds (～0.07 km 2) expanded into the large Imja Glacier Lake (Imja Tsho,～0.91 km 2) between 1964 and 2006.DTMs and subsequently derived topographical maps with contour intervals of 1 m were created from the high-resolution images (Corona in 1964 and ALOS in 2006) in the Leica Photogrammetric Suite (LPS) platform.The DTMs and topographic maps provided excellent representation of the elevation and micro-topography of the glacier surface,such as its supra-glacial ponds/lake,surface depressions,and moraine ridges,with an error of about +/-4 m (maximum).The DTMs produced from the Corona and ALOS PRISM images are suitable for use in studies of the surface change of glaciers.The topographical maps produced from the Corona data (1964) showed that part of the dead ice in the down-glacier area was even higher than the top of the lateral moraine ridges,while the glacier surface in the up-glacier area was noticeably lower than the moraine crests.This suggests more extensive melting of glacier ice in the up-glacier area before 1964.The average lowering of the glacier surface from 1964 to 2006 was 16.9 m for the dead-ice area west of the lake and 47.4 m for the glacier surface east of the lake;between 1964 and 2002,the lake surface lowered by 82.3 m.These figures represent average lowering rates of 0.4,1.1,and 2.2 m/year for the respective areas.展开更多
Objective To observe the efficacy of 工-shaped acupuncture therapy for treatment of cervical spondylosis. Methods 工-shaped acupuncture therapy（penetration needling from Fēngchí（风池 GB 20） to Fēngfǔ（风府 ...Objective To observe the efficacy of 工-shaped acupuncture therapy for treatment of cervical spondylosis. Methods 工-shaped acupuncture therapy（penetration needling from Fēngchí（风池 GB 20） to Fēngfǔ（风府 GV 16）, under the C_3–C_6 spinous process, Dàzhuī（大椎 GV 14）, Jiānzhōngshù（肩中俞 SI 15）, Jiānwàishù（肩外俞 SI 14）, and 工-shaped acupoint selection way） was adopted for treatment of 80 cases of cervical spondylosis, needling manipulation was conducted for once every 10 min, and the needles were retained for 30 min. The treatment was carried out for once a day, and treatment for 10 times was considered as 1 course of treatment. Results Sixty-seven patients were cured, and thirteen were improved. Conclusion The efficacy of 工-shaped acupuncture therapy for treatment of cervical spondylosis was definite.展开更多
In this paper,elastic metasurfaces composed of zigzag units are proposed to manipulate flexural waves at a deep subwavelength scale.Through the parameter optimization of the genetic algorithm,units with full transmiss...In this paper,elastic metasurfaces composed of zigzag units are proposed to manipulate flexural waves at a deep subwavelength scale.Through the parameter optimization of the genetic algorithm,units with full transmission and full phase control can be found,while the width is only one-fifth of the wavelength.The outstanding capability of the units is explained by analyzing.their wave fields.The flat and the curved metasurfaces for focusing are designed and simulated,showing excellent performance.Experimental results of the flat metasurface show that the incident wave energy at the focal point is enhanced over 6 times,verifying the simulation results.The proposed metasurfaces could be useful in the design of.compact and efficient elastic devices.展开更多
基金the Japan Science Society (Sasagawa Research Fund)the Global Centre of Excellence (GCOE) programme by JSPS for partial funding
文摘This study used Corona KH-4A and Advanced Land Observing Satellite (ALOS) PRISM images to generate digital terrain models (DTMs) of the distal part of Imja Glacier,where a few supraglacial ponds (～0.07 km 2) expanded into the large Imja Glacier Lake (Imja Tsho,～0.91 km 2) between 1964 and 2006.DTMs and subsequently derived topographical maps with contour intervals of 1 m were created from the high-resolution images (Corona in 1964 and ALOS in 2006) in the Leica Photogrammetric Suite (LPS) platform.The DTMs and topographic maps provided excellent representation of the elevation and micro-topography of the glacier surface,such as its supra-glacial ponds/lake,surface depressions,and moraine ridges,with an error of about +/-4 m (maximum).The DTMs produced from the Corona and ALOS PRISM images are suitable for use in studies of the surface change of glaciers.The topographical maps produced from the Corona data (1964) showed that part of the dead ice in the down-glacier area was even higher than the top of the lateral moraine ridges,while the glacier surface in the up-glacier area was noticeably lower than the moraine crests.This suggests more extensive melting of glacier ice in the up-glacier area before 1964.The average lowering of the glacier surface from 1964 to 2006 was 16.9 m for the dead-ice area west of the lake and 47.4 m for the glacier surface east of the lake;between 1964 and 2002,the lake surface lowered by 82.3 m.These figures represent average lowering rates of 0.4,1.1,and 2.2 m/year for the respective areas.
基金Supported by Construction project of Anhui scientific research innovation platform of university:2015TD033key project of natural science research of Anhui University of Chinese Medicine in 2017:2017zrzd002
文摘Objective To observe the efficacy of 工-shaped acupuncture therapy for treatment of cervical spondylosis. Methods 工-shaped acupuncture therapy（penetration needling from Fēngchí（风池 GB 20） to Fēngfǔ（风府 GV 16）, under the C_3–C_6 spinous process, Dàzhuī（大椎 GV 14）, Jiānzhōngshù（肩中俞 SI 15）, Jiānwàishù（肩外俞 SI 14）, and 工-shaped acupoint selection way） was adopted for treatment of 80 cases of cervical spondylosis, needling manipulation was conducted for once every 10 min, and the needles were retained for 30 min. The treatment was carried out for once a day, and treatment for 10 times was considered as 1 course of treatment. Results Sixty-seven patients were cured, and thirteen were improved. Conclusion The efficacy of 工-shaped acupuncture therapy for treatment of cervical spondylosis was definite.
基金supported by the National Natural Science Foundation of China(Grant Nos.12072223,12122207,12021002,11991031,and 11991032)Y.-F.Wang also acknowledges support by the Natural Science Foundation of Tianjin(Grant No.20JCQNJC01030).
文摘In this paper,elastic metasurfaces composed of zigzag units are proposed to manipulate flexural waves at a deep subwavelength scale.Through the parameter optimization of the genetic algorithm,units with full transmission and full phase control can be found,while the width is only one-fifth of the wavelength.The outstanding capability of the units is explained by analyzing.their wave fields.The flat and the curved metasurfaces for focusing are designed and simulated,showing excellent performance.Experimental results of the flat metasurface show that the incident wave energy at the focal point is enhanced over 6 times,verifying the simulation results.The proposed metasurfaces could be useful in the design of.compact and efficient elastic devices.
