Results 91 to 100 of about 4,190 (186)

Comparing China’s GDP Statistics with Coincident Indicators [PDF]

open access: yes
We use factor analysis to summarize information from various macroeconomic indicators, effectively producing coincident indicators for the Chinese economy.
Mehrotra, Aaron, Paakkonen, Jenni
core  

Control of Structure in Conventional Friction Stir Welds through a Kinematic Theory of Metal Flow [PDF]

open access: yes, 2009
In friction stir welding (FSW), a rotating pin is translated along a weld seam so as to stir the sides of the seam together. Metal is prevented from flowing up the pin, which would result in plowing/cutting instead of welding, by a shoulder on the pin ...
Nunes, A.C.   +2 more
core   +1 more source

Energy Conversion Alternatives Study (ECAS), Westinghouse phase 1. Volume 4: Open recuperated and bottomed gas turbine cycles [PDF]

open access: yes
Open-cycle recuperated gas turbine plant with inlet temperatures of 1255 to 1644 K (1800 to 2500 F) and recuperators with effectiveness values of 0, 70, 80 and 90% are considered.
Amos, D. J., Grube, J. E.
core   +1 more source

TEM investigation of MoSeC films [PDF]

open access: yes, 2017
Transition metal dichalcogenides (TMD) are widely used as self-lubricating material either as oil additive or directly as thin films. Magnetron sputtering is a deposition method allowing depositing such films with high density and adhesion.
Cavaleiro, Albano   +2 more
core  

Structural and mechanical properties of radiofrequency N/H cold plasma-nitrided C38 carbon steel

open access: yes, 2011
C38 carbon steel has been nitrided by radiofrequency cold plasma discharge with the aim to study the effect of gas composition on structural and mechanical properties of nitrided substrates. The plasma nitriding was carried out on unheated substrates, using two different gas mixtures (75% N/25% H and 25% N/75% H) for 8 h of plasma treatment.
Bouanis, F.Z.   +3 more
openaire   +1 more source

Development of an Interrupted Pulse Expanding Ring Test [PDF]

open access: yes, 2016
An interrupted pulse electromagnetic (EM) expanding ring test is being developed at the University of Waterloo to study the high rate behaviour of sheet metals.
Imbert, J., Worswick, M.
core  

2024 ACVIM Forum Research Abstract Program

open access: yes
Journal of Veterinary Internal Medicine, Volume 38, Issue 5, Page 2840-2970, September/October 2024.
wiley   +1 more source

Some effects of composition on friction and wear of graphite-fiber-reinforced polyimide liners in plain spherical bearings [PDF]

open access: yes
Oscillating, plain spherical bearings with graphite-fiber-reinforced polyimide (GFRPI) liners were tested for friction and wear from 25 to 315 C. A condensation polymer was compared with an addition polymer, and a high-modulus fiber was compared with a ...
Jacobson, T. P., Sliney, H. E.
core   +1 more source

Influence de la vitesse de mise en forme et du cycle de chauffe sur le thixoforgeage des aciers [PDF]

open access: yes, 2007
Analyse l’influence de la vitesse du coulisseau et de la température du lopin (fraction liquide) sur le comportement de l’acier à l’état semi-solide en utilisant un nouvel outillage de filage direct monté sur une presse hydraulique.
BECKER, Eric   +4 more
core   +3 more sources

Illuminating the darkness: the impact of the First World War on cost calculation practices in British firms [PDF]

open access: yes
Through a detailed examination, using business archives, of the impact of the First World War on cost calculation practices in British firms, this paper examines, and finds wanting, the claim of Loft (1986, 1990) that cost accounting came into the light ...
Trevor BOYNS
core  

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