Results 71 to 80 of about 15,963,312 (351)

Análise da dureza de um novo material restaurador para ART: Glass Carbomer

open access: yesRevista de Odontologia da UNESP
Resumo Objetivo Este estudo avaliou a microdureza de dois materiais ionoméricos – Glass Carbomer (GC-GCP Dental) e Riva Light Cure (RL-SDI) ‒ em combinação com quatro unidades fotopolimerizadoras (Carbo LED lamp, GCP-Dental; Demi LED curing light, Kerr;
Célia Maria Condeixa de França LOPES   +3 more
doaj   +1 more source

Novel Characterizations of Mechanical Properties for a Copper/Single-walled Carbon Nanotube Nanocomposite Synthesized by Laser Surface Implanting

open access: yesC, 2020
In our previous studies, we have developed a wet process, denoted laser surface implanting (LSI), to synthesize a copper/single-walled carbon nanotube (Cu−SWCNT) metal nanocomposite as an implant onto the surface of a pure copper substrate.
Jay F. Tu, Nilesh Rajule, Sang Don Mun
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

Microhardness of Root Canal Sealers at Different Canal Thirds: a Pilot In Vitro Study

open access: yeseJournal of Oral Maxillofacial Research
Objectives: The aim of this in vitro study was to evaluate the microhardness of various root canal sealers in the coronal, middle and apical thirds of the simulated root canals. Material and Methods: The study analysed the bioceramic root canal sealers (
Austėja Lukošiūtė   +2 more
doaj   +1 more source

A fiber detector radiation hardness test [PDF]

open access: yesNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2000
An intense 146 MeV/c pion beam was stopped inside a scintillating fiber detector made out of 12 planes with 16 pixels each, where every pixel consists out of 8 times 8 scintillating fibers of 500 mkm diameter dense packed. The detector was irradiated for 52 hours to more than 1 Mrad at its center.
Baehr, Juergen   +3 more
openaire   +3 more sources

The skills required for transition to university and study in biological sciences: A student perspective

open access: yesFEBS Open Bio, EarlyView.
Bioscience students were asked for their opinions on the value and teaching of skills. 204 responded that teamwork, time management and study skills are necessary to reach University, that scientific writing, research, laboratory and presentation skills are taught effectively during their studies, while other skills are gained inherently through study ...
Janella Borrell, Susan Crennell
wiley   +1 more source

Dynamic nanoindentation testing: is there an influence on a material’s hardness?

open access: yesMaterials Research Letters, 2017
Modern nanoindentation devices are capable of dynamic experimentations, which allow us to exploit instrumented hardness tests extensively. Beside the assets of recording mechanical properties continuously over displacement, there are ongoing debates ...
A. Leitner, V. Maier-Kiener, D. Kiener
doaj   +1 more source

Impact of adhesive and photoactivation method on sealant integrity and polymer network formation

open access: yesBrazilian Oral Research, 2012
We evaluated the influence of photoactivation method and hydrophobic resin (HR) application on the marginal and internal adaptation, hardness (KHN), and crosslink density (CLD) of a resin-based fissure sealant.
Boniek Castillo Dutra Borges   +6 more
doaj   +1 more source

Size Dependence of Nanoscale Wear of Silicon Carbide

open access: yes, 2017
Nanoscale, single-asperity wear of single-crystal silicon carbide (sc-SiC) and nanocrystalline silicon carbide (nc-SiC) is investigated using single-crystal diamond nanoindenter tips and nanocrystalline diamond atomic force microscopy (AFM) tips under ...
Grierson, David   +4 more
core   +2 more sources

Fracture behaviour of alloys for a new laser ranged satellite [PDF]

open access: yes, 2018
A new laser-ranged satellite called LARES 2 (Laser Relativity Satellite 2) has been recently designed for accurate tests of Einsten's theory of General Relativity and space geodesy.
Brotzu, A.   +4 more
core   +1 more source

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