Results 151 to 160 of about 125,075 (314)

A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?

open access: yesAdvanced Engineering Materials, EarlyView.
Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli   +5 more
wiley   +1 more source

Growth and mortality of Ozark bass (Ambloplites constellatus) in streams of the Ozark Highlands [PDF]

open access: yes, 2014
The Ozark bass (Ambloplites constellatus) is endemic to the Upper White River Basin, and a limited amount of information exists on the Ozark bass population, including growth and mortality characteristics.
Brye, Kristopher R., Rodman, Ashley R.
core   +2 more sources

Mechanisms of De‐icing by Surface Rayleigh and Plate Lamb Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
Ice accretion impacts daily life, renewable energy generation, maintenance, and security in industries and aeronautics. Acoustic waves (AW) are a promising method for ice removal, although de‐icing mechanisms require further investigation to optimize energy efficiency.
Shilpi Pandey   +15 more
wiley   +1 more source

The angle question

open access: yesTopology and its Applications, 2001
AbstractThe main result of this paper concerns CAT(0) groups Γ which contain an infinite order element in the center. It suffices to consider the case Γ=G×Z here. We show that although the G-factor does not determine a quasi-convex subset inside the space Γ is acting on, we do show that there is a well-defined angle which, for a given action, describes
openaire   +2 more sources

A Survey of Sport Fishing in the Illinois Portion of Lake Michigan March through September 1997 [PDF]

open access: yes, 1998
F-52-R12Report issued on: May 1998INHS Technical Report prepared for Illinois Department of Natural ...
Brofka, Wayne A., Dettmers, John M.
core  

Development of a Novel Processing Route for Dispersoid/Precipitation‐Strengthened High Conductive Copper Alloys by Using Metalized Nanoceramics in Additive Manufacturing

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores a process chain to produce dispersoid‐strengthened CuCr1Zr for applications requiring high strength and conductivity. Using gas‐atomized powder and copper‐plated alumina nanoparticles, additive manufacturing is performed via powder bed based additive manufacturing with green and red lasers, followed by heat treatment.
Heinrich von Lintel   +7 more
wiley   +1 more source

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Bribery: Who Pays, Who Refuses, What Are The Payoffs? [PDF]

open access: yes, 2005
We provide a theoretical framework for understanding when an official angles for a bribe, when a client pays, and the payoffs to the client’s decision.
Hunt, Jennifer, Laszlo, Sonia
core  

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