Results 111 to 120 of about 1,234,652 (263)

Response to technological change : the international wine industry, 1850–1939. [PDF]

open access: yes
Nuevas tecnologías; Industria del vino; Francia; España; Argelia; Australia; Estados Unidos;
Simpson, James
core  

Estimation of the Molecular Weight Distribution of Linear Homopolymer Blends from Linear Viscoelasticity for Bimodal and High Polydisperse Samples [PDF]

open access: yes, 2003
This work is concerned with the approximate solution of the problem generated by the integral of first kind relating the shear relaxation modulus of entangled, linear and flexible homopolymer blends and the molecular weight distribution (MWD). Procedures
Deiber, Julio Alcides   +1 more
core  

Fatigue behaviour of root filled teeth: The role of endodontic sealers and restorative techniques

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract This in vitro study aimed to evaluate the fatigue behaviour of root canal treated teeth, filled with either AH Plus Jet (AHP) or AH Plus Bioceramic Sealer (AHPB) and rehabilitated with either mesio‐occlusal‐distal (MOD) restorations (direct resin composite) or endocrowns (indirect resin composite).
Andressa Weber Vargas   +5 more
wiley   +1 more source

DETERMINACIÓN DE LA EFICIENCIA CUÁNTICA GLOBAL EN LA FOTOCATÁLISIS DE UN CONTAMINANTE ORGÁNICO EN AIRE

open access: yesAnales (Asociación Física Argentina), 2005
En un trabajo previo se estudió la cinética de degradación de tricloroetileno en una corriente de aire que ingresa a un reactor fotocatalítico constituido por un conjunto de mallas de vidrio paralelas, con dióxido de titanio inmovilizado, irradiadas ...
C. R. Esterkin   +3 more
doaj  

Physicochemical and remineralisation properties of calcium silicate and glass ionomer cements applied in simulated caries‐affected dentine

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract Calcium silicate‐based and glass ionomer cements are often used in caries‐affected dentine. This study investigated the remineralising and physicochemical properties of two calcium silicates and a glass ionomer cement. Human molars with Class I cavities were subjected to pH cycling to simulate caries lesions.
Monika Lukomska‐Szymanska   +7 more
wiley   +1 more source

ORTOGONALIZACIÓN E INTEGRALES DE TRES CENTROS EN EL HAMILTONIANO DE INTERACCIÓN PARA UN SISTEMA DE ÁTOMOS: TRATAMIENTO APROXIMADO

open access: yesAnales (Asociación Física Argentina), 2013
Una de las aproximaciones más comúnmente utilizadas para el estudio de sistemas interactuantes es la suposición de que las interacciones de uno y dos electrones que involucran tres centros, son despreciables frente a las de dos centros. Esta aproximación
P G Bolcatto   +3 more
doaj  

In situ evaluation of the bleaching efficacy of experimental hydrogen peroxide hydrogel with MnO‐doped Biosilicate activated by violet LED light

open access: yesEuropean Journal of Oral Sciences, EarlyView.
Abstract Hydrogen peroxide (HP) at 35% is effective for dental bleaching but may reduce enamel mineral content and induce structural changes. This study developed a bleaching‐hydrogel containing 6%HP and manganese‐oxide–doped Biosilicate (MnO_BioS), activated by violet LED, under in situ conditions.
Rafael Dascanio   +5 more
wiley   +1 more source

Machine Learning Model for Predicting Postoperative Pain in Cases of Irreversible Pulpitis

open access: yesInternational Endodontic Journal, EarlyView.
ABSTRACT Aim Postoperative pain is a frequent clinical concern following endodontic treatment. This study aimed to develop and validate supervised machine learning models to predict the occurrence of postoperative pain in cases of irreversible pulpitis.
Pedro Felipe de Jesus Freitas   +9 more
wiley   +1 more source

EFECTOS PROVOCADOS POR RECOCIDO SOBRE LA ESTABILIDAD DEL SILICIO AMORFO HIDROGENADO

open access: yesAnales (Asociación Física Argentina), 2013
Realizamos recocidos isotérmicos sobre una muestra de silicio amorfo hidrogenado (a-Si:H) depositada a baja temperatura en un reactor de descarga luminiscente.
J. A. Schmidt   +3 more
doaj  

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