Results 81 to 90 of about 28,663 (219)

SSME Long-life Bearings [PDF]

Hybrid hydrostatic/ball bearings for LH2 and LO2 service in turbopumps were studied as a means of improving speed and life capabilities. Four hybrid bearing configurations were designed with emphasis on achieving maximum stiffness and damping.
Butner, M. F., Murphy, B. T.
core   +1 more source

Numerical Prediction of Deformation‐Induced Martensitic Transformation in Cold‐Sprayed Austenitic Stainless Steel

steel research international, Volume 97, Issue 4, Page 2241-2249, April 2026.
Cold spray deposition of stainless steel (grade: SS304) is evaluated for marine applications, with emphasis on martensitic transformation during impact. Analytical modeling, simulations, and experiments reveal that helium‐assisted spraying of fine powders promotes cooling below the martensitic start temperature, enabling up to ≈40% austenite to ...
Cal Vin Wong, K. R. Ramkumar, Sougata Roy, Victor K. Champagne, John J. Lee   +4 more
wiley   +1 more source

Exploring wind-driving dust species in cool luminous giants I. Basic criteria and dynamical models of M-type AGB stars

, 2012
This work is part of an ongoing effort aiming at identifying the actual wind-drivers among the dust species observed in circumstellar envelopes. In particular, we focus on the interplay between a strong stellar radiation field and the dust formation ...
Andersen, Begemann, Bertre, Bowen, Dorschner, Ferrarotti, Ferrarotti, Fleischer, Gail, Gail, Gauger, Gautschy-Loidl, Helling, Henning, Herwig, Höfner, Höfner, Jeong, Jäger, Karovicova, Koike, Lattimer, Mattsson, McDonald, Norris, Nowotny, Nowotny, Ordal, Pegourie, Rouleau, S. Bladh, S. Höfner, Sacuto, Winters, Wittkowski, Woitke, Wood, Zeidler   +37 more
core   +1 more source

A remotely operated blood sampling and sedative administration device in freely moving pinnipeds

Methods in Ecology and Evolution, Volume 17, Issue 4, Page 1175-1187, April 2026.
Abstract A remotely operated device for use with freely moving pinnipeds was designed and successfully developed for the collection of blood samples and the administration of sedatives via an indwelling, venous catheter. The performance of the sampler, called the ‘Mossquito’, was demonstrated on six wild caught, young‐of‐the‐year grey seals ...
Joanna L. Kershaw, Eva‐Maria Bønnelycke, Will De Ruiter, Angus Aitken, Steve Balfour, Ryan Milne, Ailsa J. Hall, Holly C. Armstrong, Caitlin Downie, Simon E. W. Moss, J. Chris McKnight   +10 more
wiley   +1 more source

Programmatic status of NASA's CSTI high capacity power Stirling space power converter program [PDF]

An overview is presented of the NASA Lewis Research Center Free-Piston Stirling Space Power Converter Technology Development Program. This work is being conducted under NASA's Civil Space Technology Initiative (CSTI).
Dudenhoefer, James E.
core   +1 more source

Vesicularity, bubble formation and noble gas fractionation during MORB degassing

, 2013
The objective of this study is to use molecular dynamics simulation (MD) to evaluate the vesicularity and noble gas fractionation, and to shed light on bubble formation during MORB degassing.
Aubry, G., Guillot, B., Sator, N.
core   +2 more sources

The Shaft Response Characteristics of Hydrostatic Pocket Journal Gas Bearings with Fluid Damper.

Journal of the Japan Society for Precision Engineering, 1992
Pneumatic hammer instability has been the greatest problem in realizing a high stiffness gas bearing with a large pocket in the bearing surface. The authors have already succeeded in realizing a high stiffness and heavy damping hydrostatic thrust gas bearing with a large pocket by the use of fluid damper.
Ryutaro MIYAJI, Masami HARADA
openaire   +2 more sources

Hypogravity simulation using the Variable Gravity Suspension System: A technical report

Experimental Physiology, Volume 111, Issue 4, Page 1580-1596, 1 April 2026.
Abstract Human movement has evolved within Earth's gravitational environment (1 g; −9.81 m s−2). Future human exploration of terrestrial bodies, including the Moon (0.17 g; −1.62 m s−2) and Mars (0.38 g; −3.71 m s−2), will require astronauts to live and work within reduced gravitational environments (hypogravity).
Patrick Swain, Anthony Swain, Filipa Santos, Luke Hughes, Kirsty Lindsay, Ishbel Lomax, Claire Bruce‐Martin, Nick Caplan   +7 more
wiley   +1 more source

Report of the Scientific Committee of the Spanish Agency for Food Safety and Nutrition (AESAN) on the risk of food poisoning due to the presence of biogenic amines in meals made from chicken meat consumed by children under 3 years of age

Food Risk Assess Europe, Volume 4, Issue 2, April 2026.
Abstract Biogenic amines are low molecular weight organic bases that come from the enzymatic decarboxylation of amino acids. They are present in many types of food, with the highest concentrations usually found in fish and their derived products, as well as in beverages and fermented foods of plant, meat and dairy origin.
Baltasar Mayo Pérez, Houda Berrada Ramdani, Rosa María Capita González, Ángel José Gutiérrez Fernández, Silvia Pichardo Sánchez, María Roser Vila Casanovas   +5 more
wiley   +1 more source

The performance and application of high speed long life LH2 hybrid bearings for reusable rocket engine turbomachinery [PDF]

Data are presented for two different experimental programs which were conducted to investigate the characteristics of a hybrid (hydrostatic/ball) bearing operating in liquid hydrogen. The same bearing design was used in both programs.
Hannum, N. P., Nielson, C. E.
core   +1 more source