Results 111 to 120 of about 17,512,953 (347)

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Function and behaviour: use-wear evidence from Upper Paleolithic tools in southern Shanxi Province, North China

open access: yesDocumenta Praehistorica, 2016
Lithic use-wear analysis has become a principal approach for interpreting the function of stone tools and inferring human behaviour. This study presents the results of use-wear analysis on lithic tools excavated from the Upper Paleolithic sites of ...
Hong Chen, Yiren Wang, Chun Chen
doaj   +1 more source

Characterisation of wear particles genarated during accelerated testing of total hip replacement

open access: yes, 2004
PhDTotal hip replacements have been in use for over 30 years, and have shown great improvement from design to surgery since the first generation of implants were introduced.
Hussain, Azad
core  

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi   +2 more
wiley   +1 more source

Harm’s Way: An Approach to Change and Continuity in Prehistoric Combat

open access: yesCurrent Swedish Archaeology, 2013
Warfare has been recognized as an important factor in past societies, but the way it contributes to change is still not very well understood. When it comes to an- cient war, archaeology faces a problem: we are rarely able to address the intentions ...
Christian Horn
doaj   +1 more source

The evolutionary paradox of tooth wear: simply destruction or inevitable adaptation? [PDF]

open access: yes, 2013
Over the last century, humans from industrialized societies have witnessed a radical increase in some dental diseases. A severe problem concerns the loss of dental materials (enamel and dentine) at the buccal cervical region of the tooth.
Grosse, Ian R.   +29 more
core   +1 more source

Productivity‐Driven Optimization of Laser Powder Bed Fusion Parameters for IN718 Superalloy: Process Control, Microstructure, and Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat   +7 more
wiley   +1 more source

The Mousterian lithic assemblage of the Ciota Ciara cave (Piedmont, Northern Italy): Exploitation and conditioning of raw materials

open access: yesJournal of Lithic Studies, 2014
The Ciota Ciara cave is situated in Monte Fenera’s karst (Borgosesia – Vercelli), at 670 metres above sea level. It is the most important evidence of a Middle Palaeolithic settlement in Piedmont: the cave was used by Homo neanderthalensis during the OIS ...
Sara Daffara   +6 more
doaj   +1 more source

Sliding wear of nitrided steels

open access: yes, 1993
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The unlubricated sliding wear behaviour of gas nitrided, plasma nitrided, and ferritic nitrocarburized BS970,905M39 (EN41B) steels was investigated ...
Kato, Hirotaka, Kato, H
core  

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