Results 131 to 140 of about 175,478 (280)

Application of superalloy powder metallurgy for aircraft engines [PDF]

open access: yes
In the last decade, Government/Industry programs have advanced powder metallurgy-near-net-shape technology to permit the use of hot isostatic pressed (HIP) turbine disks in the commercial aircraft fleet.
Dreshfield, R. L., Miner, R. V., Jr.
core   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

open access: yesThe Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro   +7 more
wiley   +1 more source

Conceptual design and analysis of a large antenna utilizing electrostatic membrane management [PDF]

open access: yes
Conceptual designs and associated technologies for deployment 100 m class radiometer antennas were developed. An electrostatically suspended and controlled membrane mirror and the supporting structure are discussed.
Brooks, A. L.   +3 more
core   +1 more source

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik   +12 more
wiley   +1 more source

To protect and preserve? Explaining the gap between structural and superficial racial equality regimes in North Atlantic Rim universities

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This article examines how UK and US universities manage racial equality regimes through governance structures that prioritise institutional reputation over substantive racial justice reform. Drawing on Bourdieu's field, habitus and capital theory, the study demonstrates how universities neutralise racial justice efforts through bureaucratic ...
David Roberts
wiley   +1 more source

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