نتایج جستجو برای: silver alloy

تعداد نتایج: 97175  

2009
Ruchi Sethi Lokendra Kumar Prashant K Sharma AC Pandey

Highly luminescent Ag-ion-doped Cd1-xZnxS (0 ≤ x ≤ 1) alloy nanocrystals were successfully synthesized by a novel wet chemical precipitation method. Influence of dopant concentration and the Zn/Cd stoichiometric variations in doped alloy nanocrystals have been investigated. The samples were characterized by X-ray diffraction (XRD) and high resolution transmission electron microscope (HRTEM) to ...

Journal: :Rapid Prototyping Journal 2021

Purpose The COVID-19 pandemic emphasises the need for antiviral materials that can reduce airborne and surface-based virus transmission. This study aims to propose use of additive manufacturing (AM) surrogate modelling rapid development deployment novel copper-tungsten-silver (Cu-W-Ag) microporous architecture shows strong behaviour against severe acute respiratory syndrome coronavirus 2 (SARS-...

Journal: :Journal of dentistry 1998
C M Kreulen H Tobi R J Gruythuysen W E van Amerongen P J Borgmeijer

OBJECTIVES This paper reports on the replacement risk of different treatment modalities for Class II amalgam restorations in a clinical trial of 15 years duration. METHODS The performance of 1117 conventional Class II amalgam restorations in a controlled, longitudinal study were analysed using logistic regression with a random component. Primary variables regarding replacement risk were the t...

2013
Ataís Bacchi Rafael L. X. Consani Marcelo F. Mesquita Mateus B. F. dos Santos

The purpose of this study was to evaluate the influence of superstructure material and vertical misfits on the stresses created in an implant-supported partial prosthesis. A three-dimensional (3-D) finite element model was prepared based on common clinical data. The posterior part of a severely resorbed jaw with two osseointegrated implants at the second premolar and second molar regions was mo...

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