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The effects of different sectional arches in canine retraction
The European Journal of Orthodontics, 1994The purpose of the present study was to compare the effects of Gjessing's canine retraction arch with a sectional arch including a reverse closing loop, which are both used for canine retraction in extraction cases. Our study involved both the maxilla and the mandible independently. After upper first premolar extractions and levelling of the teeth with
ISCAN, HN, DINCER, M
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Journal of earthquake engineering, 2020
In this study, out-of-plane experimental tests are performed on masonry partitions in reinforced concrete frames. The out-of-plane strength of reference as-built specimens with and without arching action is assessed.
Mariano Di Domenico +2 more
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In this study, out-of-plane experimental tests are performed on masonry partitions in reinforced concrete frames. The out-of-plane strength of reference as-built specimens with and without arching action is assessed.
Mariano Di Domenico +2 more
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Research of Arching Phenomenon in Crowd Evacuation Simulation Based on the Arch Effect
Journal of Computational and Theoretical Nanoscience, 2017Arch Effect is a universal natural phenomenon caused by the non-homogeneous displacement of the media. Likely, the pedestrians in a crowd evacuation simulation, according to the social force model, would also form an arch near the exit in a short time. The resulting arch may decrease evacuation efficiency and lead to extremely dangerous situations. In
Liang Li, Hong Liu, Lei Lv
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Analytical solution for active pressure of narrow backfills considering arching effect
, 2020Purpose The purpose of this paper is to study the distribution of active earth pressure in retaining walls with narrow cohesion less backfill considering arching effects.
S. Ghobadi, H. Shahir
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A Continuum Description of Arching Effects
1998We propose a two-phase continuum model for describing the slow flow of saturated granular media. This model includes overall viscous dissipation, filtration of the fluid phase and a shear dilatancy effect which, in our view, accounts for steric constraints in the granular phase.
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The soil arching effect induced by shield tunnelling under asymmetric surface loading
Computers and geotechnics, 2023Junzuo He +4 more
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ประสิทธิภาพตลาดปริวรรตเงินตราต่างประเทศของประเทศไทยโดยพิจารณาผลของ ARCH effect
การทำวิจัยฉบับนี้มีวัตถุประสงค์เพื่อที่ต้องการศึกษาถึงลักษณะและทำการทดสอบความมีประสิทธิภาพของตลาดปริวรรตเงินตราต่างประเทศของประเทศไทย โดยลักษณะตลาดปริวรรตเงินตราต่างประเทศของประเทศไทยนั้นมีขนาดที่ค่อนข้างจะเล็ก เนื่องมาจากทางการได้อนุญาตให้แก่เฉพาะบุคคลหรือสถาบันที่ประกอบธุรกิจที่เกี่ยวข้องกับเงินตราต่างประเทศเท่านั้น ซึ่งได้แก่ ผู้นำเข้า ผู้ส่งออก บร ...openaire +1 more source
An analytical solution for the arching effect induced by ground loss of tunneling in sand
Tunnelling and Underground Space Technology, 2019Because the earth pressure above tunnel crown was assumed uniform and the effect of particle flow of sand and ground loss were not considered, Terzaghi method generally produces discrepancies from model tests and field observations.
Jun Wu, S. Liao, Mengbo Liu
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Analysis of Face Stability Based on Incomplete Soil Arching Effect
KSCE Journal of Civil Engineering, 2022Fei Ye +5 more
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