We report a case of traumatic optic neuropathy accompanying a grease gun injury to the orbit. A 48-year-old man with a grease gun injury visited our clinic with decreased visual acuity, proptosis and limited extraocular movement (EOM). Orbital CT revealed a crescent mass of fat in the medial ...
PubMed Central
A Spiral Orbit Tribometer was employed to evaluate the tribological behavior and relative lifetimes of several commercially available greases under ...
NASA Website
An Evaluation of Liquid, Solid, and Grease Lubricants for Space Mechanisms. Using a Spiral Orbit Tribometer. Michael Buttery*. Abstract. We present the ...
A Spiral Orbit Tribometer was employed to evaluate the tribological behavior and relative lifetimes of several commercially available greases under ultrahigh vacuum. These greases are either based on a multiply alkylated cyclopentane oil, or a perfluoropo...
National Technical Information Service (NTIS)
Most currently used greases for space applications are based on perfluoropolyalkylethers (PFPE) and multiply alkylated cyclopentane (MAC) oils. Evaluation of the greases includes outgassing properties, rheological behavior, and particularly the ability to...
Perfluoropolyalkylether (PFPE) oils and oil-based greases exhibit significant degradation under boundary lubrication conditions. In the absence of significant concentrations of oxygen, as in the case of spacecraft orbital environments, the degradation mec...
On November 20, astronauts Heidemarie Stefanyshyn-Piper and Shane Kimbrough conducted what is most likely the world's most extreme lube job, greasing the.
The use of thermal greases is no longer recommended for space flight ... greases in order to minimize the potential for contamination, particularly in ...
... There was no correlation whatever between the permeability coefficients and the mechanical stabilities of the greases as established on the grease ...
DTIC Science & Technology
... Title : OXIDATION OF LITHIUM GREASES,. ... Abstract : One of the most important properties of greases is their chemical stability. ...
... Descriptors : (*PATENTS, LOW TEMPERATURE LUBRICANTS), (*GREASES, *LOW TEMPERATURE LUBRICANTS), (*SEBACIC ACID, GREASES ...
greases are either based on a multiply alkvlated cyclopentane ... greases yielded long lifetimes, while perfluoropolyalkylether ...
greases for space applications are based on perfluoropolyalkylethers ... of the greases includes outgassing properties, rheological behavior, ...
Most currently used greases for space applications are based on ... Evaluation of the greases includes outgassing properties, rheological behavior, and ...
Disclosed is a polyurea-thickened grease containing a polyhydroxylated compound which improves the low shear stability of the grease.
Energy Citations Database
... Title : GREASES. ... Abstract : Seventeen greases were shear worked at ambient temperatures by three different shear methods. ...
... IN LUBRICATING GREASES N ... grease th4.ekeners, techniques were developed to extract the thickener from greases for microstruictura3. study. ...
... Accession Number : ADA951442. Title : Greases for 3-in. AA Equilibrators. Recoil Mechanism Greases, Keystone 84 RM. ...
The invention is directed to lubricating grease compositions, more particularly to the use of certain agents to improve the yield of calcium base greases. The yields of grease compositions are increased by incorporating therein an oil-soluble polyglycol p...
The aim of this literature review of lubricating greases is to inform the consumers on the constitution and characteristics of different greases, to make selection of a suitable grease for demanding uses and comprehension of product specifications easier....
This web page is an interactive physics tutorial relating to orbits. The user can set the initial velocity of an orbiting mass and observe the resulting trajectory. The animations illustrate how initial velocity affects the object's orbital path and can result in collision or a break from orbit. Graphs of kinetic ...
NSDL National Science Digital Library
... Abstract : This patent describes an antirust, anticorrosion grease composition comprising a major proportion of a perfluorinated polyalkylether base ...
