Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"tailgate"”.
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Optimizing secondary tailgate support selection
A model was developed to facilitate secondary tailgate support selection based on analysis of a data base of over 100 case studies compiled from two different surveys of operating longwall coal mines in the United States. The ALPS (Analysis of Long wall Pillar Stability) program was used to …
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CFD modeling of a tailgate ventilation condition in a longwall bleeder system
… in great detail. The results confirm that the tailgate corner of the longwall face is a critical area prone to face ignitions and thus needs to be properly monitored. Roof falls at the tailgate entry inby the face and/or poor caving conditions behind the shields can both pose a safety risk at …
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Numerical analyses of the effectiveness of secondary tailgate support systems: a stability approach
… on the stability of a retreating longwall tailgate opening. The range of loading conditions that any tailgate can be subjected to was identified to form the basis of numerical modeling. The tailgate entry was considered as a part of roof-pillar-floor system, whose behavior is controlled …
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Four-Dimensional Passive Velocity Tomography of a Longwall Panel
… display a high velocity area along the longwall tailgate that redistributes with face advance. Numerical modeling and mine experience confirm that the longwall tailgate is subject to high stress. Additionally, microseismic events are correlated with the velocity tomograms. Velocity tomography …
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Millennial Alumni Perceptions of Communications Media Utilized by the Dale Bumpers College of Agricultural, Food and Life Sciences
… magazines, <em>The Graduate</em> e-newsletter, tailgate and mocktail party invitations, College website, and social media presences. Active and inactive Millennial alumni (<em>N</em> = 20) responses were gathered through telephone interviews, and a qualitative analysis was used to identify …
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Surface water flow resistance due to emergent wetland vegetation
… flow rates (3, 4, and 5 L/s) and three different tailgate heights (0, 2.5, and 5 cm) were used to simulate a variety of wetland conditions. Plant spacing and clump diameter were varied (20 and 25 cm, 8 and 12 cm, respectively). Friction factors ranged from 9 to 40 and decreased with increasing …
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Aspects of the Requirements of ISO 15263.4 and the Design and Development of Bicycle Racks
… differ from tests for racks that strap onto the tailgate.