Results 71 to 80 of about 46,926 (269)
, 1968 Three-port transfer valve with one port open continuously suitable for manned space ...
Puccinelli, A. A., Smith, J. R., Jr.
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The Anatomical Record, EarlyView.Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley +1 more source
A High-Thrust Screw-Type Piezoelectric Ultrasonic Motor with Three-Wavelength Exciting Mode
Applied Sciences, 2016 A high-thrust screw-type piezoelectric ultrasonic motor with a three-wavelength exciting mode is proposed in this paper. The motor mainly includes a stator and a screw output shaft, and the stator is composed of twelve rectangular piezoelectric plates ...
Hengyu Li +5 more
doaj +1 more source
Turbomachinery shaft insert [PDF]
An insert is presented for a hollow rotatable shaft on the end of which an impeller is mounted, the insert having a first cylindrical portion receivable within the end of the shaft. The insert includes a radially extending portion adjacent the end of the
Vonpragenau, George L.
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High power-high voltage waterload Patent [PDF]
, 1967 Variable water load for dissipating large amounts of electrical power during high voltage power supply ...
Littlejohn, D. P., Reed, A. E.
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The Anatomical Record, EarlyView.Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza +3 more
wiley +1 more source
A rotating, noncapillary heat pipe [PDF]
, 1969 Hollow rotating shaft operates like a heat pipe, with a small, sealed-in inventory of fluid that transfers heat by vaporizing at the hot end and condensing at the cold end.
Gray, V. H.
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Archaeology in Oceania, EarlyView.ABSTRACT This paper reports on the excavation of a cache of stone artefacts, buried on the bank of a waterhole or ‘billabong’ in central western Queensland. This is an extremely rare find, and yet it is the second such site to be reported within less than a 10 km radius.
Yinika L. Perston +5 more
wiley +1 more source
Study on Mandrel Forging and Necking Process of a Hollow Shaft with an Inner Stepped Hole. [PDF]
Materials (Basel), 2022 Ge X, Tian C, Lu Y, Wang G.
europepmc +1 more source
Rotary plant growth accelerating apparatus [PDF]
, 1975 Rotary plant growth accelerating apparatus for increasing plant yields by effectively removing the growing plants from the constraints of gravity and increasing the plant yield per unit of space is described.
Dedolph, R. D.
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