Results 131 to 140 of about 35,036 (277)
VPPA weld model evaluation [PDF]
NASA uses the Variable Polarity Plasma Arc Welding (VPPAW) process extensively for fabrication of Space Shuttle External Tanks. This welding process has been in use at NASA since the late 1970's but the physics of the process have never been ...
Gordon, Stephen S. +2 more
core +1 more source
Investigating the effect of tunnelling on existing tunnels [PDF]
, 2015 A major research project investigating the effect of tunnelling on existing tunnels has been completed at Imperial College London. This subject is always of great concern during the planning and execution of underground tunnelling works in the urban ...
Afshan, S +8 more
core
Clinical and radiographic performance of preformed zirconia crowns and stainless-steel crowns in permanent first molars: 18-month results of a prospective, randomized trial [PDF]
, 2023 Nazlı Gedük +4 more
openalex +1 more source
Flow visualization in the Langley 0.3-meter Transonic Cryogenic Tunnel and preliminary plans for the National Transonic Facility [PDF]
Design problems associated with the integration of flow visualization in cryogenic facilities are discussed. The possible effects from the cryogenic environment (i.e., window distortion due to thermal contraction both in the mounts and in the window ...
Jones, S. B., Rhodes, D. B.
core +1 more source
Microfissuring of Inconel 718 [PDF]
A tentative mathematical computer model of the microfissuring process during electron beam welding of Inconel 718 has been constructed. Predictions of the model are compatible with microfissuring tests on eight 0.25-in. thick test plates. The model takes
Nunes, A. C., Jr.
core +1 more source
Efficacy and clinical outcome of zirconia and stainless-steel crowns in pediatric dentistry
, 2021 Ameera Ibrahim Amer +10 more
openalex +2 more sources
Micro-CT Evaluation of Stainless Steel Crowns on Extracted Primary Molars [PDF]
, 2015 Boram Jung +4 more
openalex +1 more source
Secondary Li battery incorporating 12-Crown-4 ether [PDF]
, 1992 A rechargeable lithium battery which utilizes a polyethylene oxide (PEO) solid polymeric electrolyte complexed with a lithium salt is disclosed.
Distefano, Salvador +1 more
core +1 more source
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2010 An in vitro study was conducted to compare the retentive strengths of zinc phosphate, polycarboxylate and glass ionomer cements using Instron universal testing machine.
Raghunath Reddy M +2 more
doaj