Results 81 to 90 of about 1,035 (205)

Simulation analysis of striation phenomena in abrasive water jet cutting (AWJC) process of AISI 304 stainless steel

Metalurgija, 2018
Abrasive water jet cutting (AWJC) technology has been widely used in metal processing field. However, the generation of striations deteriorates cutting quality.
X. C. Chen, S. S. Deng, M. Chen, W. X. Hua, S. Liao, S. Yao   +5 more
doaj  

Submerged geomorphic record of Quaternary palaeoshorelines: terraces and clinothems along a shelf‐edge in the Žirje Archipelago, Adriatic Sea

Boreas, EarlyView.
Numerous studies have shown that during the Quaternary there were substantial fluctuations in sea level in response to glacial–interglacial climate variability, reaching lowstand positions up to 134 m below the present sea level (b.s.l.). These fluctuations have had a strong influence on the morphology of shallow shelf seas, which preserve evidence of ...
Ozren Hasan, Dea Brunović, Natalia Smrkulj, Maria Geraga, Dimitris Christodoulou, Nikolina Ilijanić, George Papatheodorou, Slobodan Miko   +7 more
wiley   +1 more source

Investigation of the Wear and Machinability Properties of Laser Coated AA7075 Aluminum Alloy Materials

Gazi Üniversitesi Fen Bilimleri Dergisi, 2019
In this study, ZrB2 nanoparticles which is synthesized by the mechanochemical method were coated on the surface of AA7075 aluminum alloy with CO2 laser.
Tuncay ŞİMŞEK, Adnan AKKURT
doaj   +1 more source

Implantoplasty Positively Influences Biofilm Removal During Toothbrush: An In Vitro Study

International Journal of Dental Hygiene, EarlyView.
ABSTRACT Purpose To analyse the effect of implantoplasty on the efficacy of brushing dental implants. Methods Acrylic hemi‐arches were made to simulate a horizontal bone loss condition in an implant in position 46, exposing 3 mm of its cervical intra‐osseous portion. Implantoplasty was performed on the implant surfaces of the test group, and no surface
Robson Iralla Rezende, Cleverson O. Silva   +1 more
wiley   +1 more source

Research and application of hydraulic fracturing axial roof cutting technology for gently inclined hard roof based on abrasive jet

Frontiers in Earth Science
In order to explore a new method and mode of gently inclined hard roof treatment, the hydraulic fracturing axial roof cutting technology based on abrasive jet is introduced, and the key technical parameters of abrasive jet axial cutting and fracturing ...
Ruda Sun, Ruda Sun, Zhipeng Zhao, Wei Yang, Hongping Li   +4 more
doaj   +1 more source

The Effect of Mechanical Instrumentation on Dental Hard Tissue In Vitro: A Systematic Review

International Journal of Dental Hygiene, EarlyView.
ABSTRACT Objective The aim of this review was to analyse the effects of hand instruments, ultrasonic scalers and air polishing devices on dental hard tissues, focusing on material loss and surface roughness. Methods Electronic databases MEDLINE, EMBASE, and the Cochrane Library were screened for relevant studies.
Katerina Mezquita Prieto Dvorska, Chun Ching Liu, Patrick Schmidlin   +2 more
wiley   +1 more source

Comparison of tooth fracture load between different conventional and CAD‐CAM denture base materials

Journal of Prosthodontics, EarlyView.
Abstract Purpose To assess the fracture load at the tooth‐denture base interface in dentures fabricated using three different production methods: compression mold, computer‐aided design and computer‐aided manufacturing (CAD‐CAM) milled (monolithic and bonded), and 3D‐ printed dentures (monolithic and bonded).
Eman Al Kaba, Amal Alfaraj, Tien‐Min G. Chu, Dean Morton, Dhafer Alqahtani, Wei‐Shao Lin, Chao‐Chieh Yang   +6 more
wiley   +1 more source

Effectiveness of plasma‐enhanced chemical vapor film in surface treatments of resin‐matrix ceramics to preserve optical characteristics after different aging processes

Journal of Prosthodontics, EarlyView.
Abstract Purpose The aim of this study was to evaluate the surface roughness and optical characteristics of three ceramics with resin matrix for computer‐aided design and computer‐aided manufacturing, after different surface treatment protocols associated or not with the application of film deposition by plasma‐enhanced chemical vapor deposition (PECVD)
Victor Alves Nascimento, Kevin Henrique Cruz, Lorena Scaion Silva, João Pedro Justino de Oliveira de Limírio, Ana Beatriz de Souza Albergardi, Elidiane Cipriano Rangel, Aldiéris Alves Pesqueira   +6 more
wiley   +1 more source

The Ames impact structure, Oklahoma: New radioisotopic constraints and implications for North American impact chronology

Meteoritics &Planetary Science, EarlyView.
Abstract The Ames impact structure (Oklahoma) is thought to have formed during the Ordovician Meteor Event, based on conodont biostratigraphy of its crater fill. Here, U–Pb zircon dates from its impact‐melt portion, conducted using secondary ion mass spectrometry and laser ablation–inductively coupled plasma–mass spectrometry (n = 37 spots), yield a ...
Elizabeth J. Catlos, Andrew F. Parisi, Michael E. Brookfield, Timmons Erickson, Sean P.S. Gulick, Axel K. Schmitt, Daniel F. Stockli, Daniel P. Miggins, Ben Ruchte, Mark Cloos   +9 more
wiley   +1 more source

Cretaceous moss–cyanobacteria association reveals trophic interactions in polar forests of Antarctica

New Phytologist, EarlyView.
Kimmerera cyanifera gen. et sp. nov. with associated cyanobacteria, holotype UWBM 116051. Summary Through symbiotic associations with microbes, mosses play many important ecological roles in terrestrial ecosystems, such as facilitating trophic interactions and nitrogen cycling.
Zane Walker, Alexander C. Bippus, Ari Iglesias, Selena Y. Smith, Brian A. Atkinson   +4 more
wiley   +1 more source