Results 61 to 70 of about 1,265 (179)

Wear mechanisms of dental composite restorative materials by two different in-vitro methods

Materials Research, 2012
In this work two very simple apparatuses, namely the ball crater (or ball-on-plate) and the linear reciprocating (or pin-on-plate) tests, were used in order to investigate the wear mechanisms of TPH Spectrum® and Resilab Master® dental composite resins ...
Juliana Antonino de Souza, Liliane Canuto Dolavale, Sergio Alvaro de Souza Camargo   +2 more
doaj   +1 more source

Peri‐implantitis—Is it mainly a clinician‐initiated complication of implant therapy?

Periodontology 2000, EarlyView.
Abstract Aim The high prevalence of peri‐implantitis is concerning, with a growing consensus that the majority of cases are complications initiated by clinician‐related errors rather than classic pathology. A primary predisposing factor for peri‐implantitis is exposure of the micro‐rough implant surfaces to the peri‐implant sulcus after treatment ...
Stephen T. Chen, Alberto Monje, Franz J. Strauss, Frank Schwarz, Andrea Roccuzzo, Irena Sailer, Dennis Tarnow, France Lambert, Sascha Jovanovic, Daniel Buser   +9 more
wiley   +1 more source

Making Mining Licit: Gold, Commodification, and the Everyday Performance of Law in Colombia

American Anthropologist, Volume 128, Issue 3, Page 480-493, September 2026.
ABSTRACT Ethnographies of resource‐making have shown that the extraction of resource value from objects is premised on obviating the emplaced lifeworlds that surrounded objects before they traveled to consumer markets. Much of this literature looks at such supply‐chain disentanglement from the viewpoint of corporate and formal regulatory practices ...
Jesse Jonkman
wiley   +1 more source

Wear mechanism of the PCBN cutting tools in high speed cutting of hardened bearing steel

Jin'gangshi yu moliao moju gongcheng, 2016
The BZN9000 compacts from D.I.Company in the USA is selected and its high speed cutting experiments are carried out on the GCr15 hardened bearing steel ring by using the CA6140 Alathe.The morphologies and the element contents of rake and flank face of ...
DENG Fuming, DENG Wenli, YANG Xuefeng, ZHANG Pan, LIU Ruiping, MA Xiangdong   +5 more
doaj  

A Study on Proposal of Flank Wear Criterion by Using a Built-in Current Sensor when Manufacturing the Mold Materials in a Smart Machine Tool

MATEC Web of Conferences, 2018
Recently, it has been increased with respect to the safe and reliable operations in industry of machine tools and intelligent of the machine tool has consistently been developing in term of an unmanned manufacturing.
Baek Seung-Yub, Jung Sung-Taek, Park Dae-Yu   +2 more
doaj   +1 more source

Electrified Damage in Motion Systems

Advanced Engineering Materials, Volume 28, Issue 15, 5 August 2026.
The electrified damage in motion systems is a fundamental framework presenting the degradation pathway arising from the coupling of electrical energy transport with mechanical contact and interfacial chemistry. The framework positions electrified damage as a distinct degradation regime with unique characteristic surface morphologies and failures of ...
M. Humaun Kabir, Angelina Nguyen, Hong Liang   +2 more
wiley   +1 more source

Shared foraging behaviors between hyenas and hominins in the Middle Paleolithic Levant: New evidence from Geula Cave, Israel

Journal of Quaternary Science, Volume 41, Issue 6, Page 896-914, August 2026.
ABSTRACT While competition with large carnivores is likely to have shaped Middle Paleolithic hominins' subsistence behavior, palimpsested human and carnivore accumulations render the signal challenging to isolate. This study presents a detailed zooarchaeological and taphonomic analysis of a non‐anthropogenic faunal assemblage from a MIS 5 (~130–80 ka ...
Meir Orbach, Omry Barzilai, Israel Hershkovitz, Ma'ayan Lev, Reuven Yeshurun   +4 more
wiley   +1 more source

Experimental investigation and mathematical modeling of the composite ceramic cutting tools with alumina base in the machining process of PH-hardened Austenitic-ferritic (Duplex) stainless steel [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2012
: The lifetime of a cutting tool is an important and determinant parameter for evaluating its performance. The amount of tool abrasion affects seriously dimensions and surface quality of the working piece so that one of the main factors to determine the ...
Ehsan Ahmadi, Rasool Homami, Sadegh Rahmati   +2 more
doaj  

Taxonomic reassessment of Tolpis (Asteraceae) in the Azores and Madeira archipelagos with description of new species

TAXON, Volume 75, Issue 4, August 2026.
Abstract Tolpis (Asteraceae) is a recently diversified genus of flowering plants, centered in the Macaronesian region, where it exhibits striking morphological variation and high levels of endemism. In this study, we focus on the archipelagos of Madeira and the Azores (Portugal).
Lurdes Borges Silva, Luís Silva, Miguel Menezes De Sequeira, Daniel J. Crawford, Mark E. Mort, Rui Bento Elias, Guilherme Roxo, Mónica Moura   +7 more
wiley   +1 more source

Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Metals, 2018
In this paper, TiAlN-coated cemented carbide tools with chip groove were used to machine titanium alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B under dry conditions in order to investigate the machining performance of this cutting tool.
Zhaojun Ren, Shengguan Qu, Yalong Zhang, Xiaoqiang Li, Chao Yang   +4 more
doaj   +1 more source