Results 91 to 100 of about 6,921 (226)

Determinación de la microdureza del esmalte en lesiones de manchas blancas tratadas con resinas infiltrantes Determination of enamel microhardness in white spot lesions treated with infiltrating resins

open access: yesRevista de la Asociación Odontológica Argentina
Objetivo: Determinar in vitro si la microdureza superficial Knoop de las manchas blancas mejora con la infiltración de resinas de baja viscosidad en comparación con la microdureza del esmalte sano.
María Eugenia Alejandra Barrionuevo   +2 more
doaj   +1 more source

Comparisons of modified Vasco X-2 and AISI 9310 gear steels [PDF]

open access: yes
Endurance tests were conducted with four groups of spur gears manufactured from three heats of consumable electrode vacuum melted (CVM) modified Vasco X-2. Endurance tests were also conducted with gears manufactured from CVM AISI 9310. Bench type rolling
Townsend, D. P., Zaretsky, E. V.
core   +1 more source

Mineral exchange between dentin pre-tretament with Dolomite powder on demineralized dentin in deciduous molars

open access: yesBrazilian Dental Science, 2018
The objective of this study was to evaluate differences in microhardness and mineral profiles in sound and demineralized dentin of primary molars after treatment with powdered dolomite (DMT) followed by glass ionomer cement (GIC) restoration.
Gisele Fernandes Dias   +3 more
doaj   +1 more source

Evaluation of meta-benzenedisulfonic acid as a stress-reducing additive in a Watts nickel electroplating bath [PDF]

open access: yes
Internal stress and deposit hardness of nickel electrodeposited containing controlled quantities of meta-benzenedisulfonic ...
Munford, J. A., Whitfield, C. E.
core   +1 more source

Shielding of Space Vehicles by Magnetic Fields [PDF]

open access: yes, 1962
Spacecraft shielding by magnetic ...
Edmonson, N.   +2 more
core   +1 more source

Surface hardness evaluation of a 3D printable resin designed for final restorations

open access: yesBrazilian Dental Science
Objective: Advancements in the digital area have triggered significant interest among researchers in recent years, particularly concerning 3D printers.
Bruno Trivelato Rodrigues   +4 more
doaj   +1 more source

Long-term bond strength, degree of conversion and resistance to degradation of a HEMA-free model adhesive

open access: yesBrazilian Journal of Oral Sciences, 2014
Aim: To evaluate the long-term bond strength, degree of conversion and resistance to degradation in ethanol of HEMA-containing and HEMA-free model adhesive resins of a three-step etch-andrinse adhesive system. Methods: The superficial dentin of 16 bovine
Fabrício Mezzomo Collares   +4 more
doaj   +1 more source

The influence of heterogenous porosity on silicon nitride/steel wear in lubricated rolling contact [PDF]

open access: yes, 2000
Heterogeneous porosity is detected on the surface and subsurface of hot isostatically pressed (HIPed) silicon nitride spherical rolling elements. The extent of the localised porosity accounts for an area of 6% of the rolling element surface and 4% of the
Hadfield, M, Kang, J
core  

Effects of applied pressure on hot-pressing of Beta-SiC [PDF]

open access: yes
The effects of applied pressure on the densification during hot pressing of beta-SiC compacts were investigated. Beta-SiC powder is Starck made and has the average particle size of about 0.7 micrometer.
Hayami, R.   +3 more
core   +1 more source

Deposición y caracterización de un sistema de recubrimiento duplex aplicado sobre acero para trabajo en caliente AISI H13 [PDF]

open access: yes, 2015
AISI H13 steel is widely used for extrusion moulds and other hot work tools fabrication, due to its high toughness, strength and hardness around 56 HRC (Rockwell C) -- However, this steel possesses a relatively low wear resistance, which reduces its life
Arroyave Franco, Mauricio   +2 more
core  

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