Results 81 to 90 of about 18,727 (183)

Running performance of an aerodynamic journal bearing with squeeze film effect [PDF]

open access: yes, 2013
Results of theoretical and experimental studies concerning the performance of an aerodynamic journal bearing which running is assisted by squeeze film ultrasonic levitation (SFUL) are presented in this paper.
Ha   +13 more
core   +1 more source

Welfare assessment of turkeys (Meleagris gallopavo gallopavo) on farm

open access: yesEFSA Journal, Volume 24, Issue 2, February 2026.
Abstract This Scientific Opinion assesses the welfare of turkeys of all ages (Meleagris gallopavo gallopavo) on farm in relation to the type and condition of the litter, type and availability of enrichment (including covered veranda and outdoor range), space allowance, concentrations of ammonia and carbon dioxide, effective environmental temperature ...
EFSA Panel Animal Health and Animal Welfare (AHAW)   +23 more
wiley   +1 more source

A new test machine for measuring friction and wear in controlled atmospheres to 1200 C [PDF]

open access: yes
This paper describes a new high temperature friction and wear test apparatus (tribometer) at NASA Lewis Research Center, Cleveland, Ohio. The tribometer can be used as a pin-on-disk or pin-on-ring configuration and is specially designed to measure the ...
Dellacorte, Christopher   +1 more
core   +1 more source

Maxometers (peak wind speed anemometers) [PDF]

open access: yes, 1973
An instrument for measuring peak wind speeds under severe environmental conditions is described, comprising an elongated cylinder housed in an outer casing.
Camp, D. W.   +2 more
core   +1 more source

Restoration of the tribotechnical pairs in equipment of mining industry [PDF]

open access: yes, 2019
Purpose. Substantiation of the possibilities and development of technology for the restoration of the worn-out tribotechnical pairs of mining equipment by methods of hot radial stamping in powder metallurgy using technogenic waste. Methods.
Biloshytska, N   +2 more
core   +1 more source

Research on the Calculation Method for the Contact Stress of Wind Turbine Main Shaft Bearings Based on Finite Element Analysis

open access: yesLubricants
Under alternating loads, the contact situation for self-aligning roller bearings in the main shaft of a wind turbine is complex. Few methodologies exist for calculating the contact stress of main shaft bearings.
Yi Zou   +4 more
doaj   +1 more source

Automotive gas turbine fuel control [PDF]

open access: yes, 1978
A fuel control system is reported for automotive-type gas turbines and particulary advanced gas turbines utilizing variable geometry components to improve mileage and reduce pollution emission.
Gold, H.
core   +1 more source

Chuck for delicate drills [PDF]

open access: yes, 1972
Development of oil film technique to couple power between drive spindle and drill chuck for delicate drilling operations is discussed. Oil film permits application of sufficient pressure, but stops rotating when drill jams.
Copeland, C. S.
core   +1 more source

Design of an electrochemical micromachining machine [PDF]

open access: yes, 2014
Electrochemical micromachining (μECM) is a non-conventional machining process based on the phenomenon of electrolysis. μECM became an attractive area of research due to the fact that this process does not create any defective layer after machining and ...
A Muetze   +40 more
core   +1 more source

Dual motion valve with single motion input [PDF]

open access: yes, 1987
A dual motion valve includes two dual motion valve assemblies with a rotary input which allows the benefits of applying both rotary and axial motion to a rotary sealing element with a plurality of ports.
Belew, Robert
core   +1 more source

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