Results 41 to 50 of about 27,244 (165)

Estudo do comportamento mecânico dos compósitos de restauro dentário utilizando técnicas ópticas [PDF]

, 2011
Os materiais compósitos são hoje em dia cada vez mais utilizados no restauro dentário. Estes materiais substituíram as tradicionais amálgamas que apresentavam alguns inconvenientes.
Campos, J.C. Reis, Campos, L.M., Lopes, H., Monteiro, J., Vasconcelos, Mário, Vaz, M.A.P.   +5 more
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Prognostic Impact of Spontaneous Conversion to Sinus Rhythm in Patients With Symptomatic Paroxysmal Atrial Fibrillation: A Propensity‐Matched Follow‐Up Study

Journal of Cardiovascular Electrophysiology, Volume 36, Issue 12, Page 3222-3230, December 2025.
ABSTRACT Background Paroxysmal atrial fibrillation (PAF) patients do not invariably progress to persistent AF, with a consistent group of patients showing AF regression during follow‐up. The prognostic implications of spontaneous conversion (SCV) to sinus rhythm (SR) in those patients has never been evaluated yet.
Marco Valerio Mariani, Tommaso Recchioni, Nicola Pierucci, Sara Trivigno, Pietro Cipollone, Raffaele Maria Bruti, Domenico Laviola, Marta Palombi, Andrea Matteucci, Agostino Piro, Cristina Chimenti, Gioacchino Galardo, Francesco Pugliese, Carmine Dario Vizza, Carlo Lavalle   +14 more
wiley   +1 more source

Nanocrystalline Diamond as a Coating for Joint Implants: Cytotoxicity and Biocompatibility Assessment

Journal of Nanomaterials, Volume 2008, Issue 1, 2008., 2008
Nanocrystalline diamond (NCD) coatings combine a very low surface roughness with the outstanding diamond properties, such as superlative hardness, low self‐friction coefficient, high wear and corrosion resistance, and biotolerance, which are ideal features for applications in medicine (knee and hip replacement) and surgical tools.
Margarida Amaral, Pedro S. Gomes, Maria A. Lopes, José D. Santos, Rui F. Silva, Maria H. Fernandes, Zuzanna Siwy   +6 more
wiley   +1 more source

Efeito do tratamento alcalino de fibras de Curauá sobre as propriedades de compósitos de matriz biodegradável

Polímeros, 2014
Neste trabalho avaliou-se a influência do tratamento alcalino das fibras de curauá, nas concentrações de 1, 5 e 10%(m/v) de NaOH, nas propriedades dos compósitos com matriz de PHBV e 20% m/m de fibras de curauá.
Lílian Vanessa Rossa Beltrami, Lisete Cristine Scienza, Ademir José Zattera   +2 more
doaj   +1 more source

Compósitos poliméricos para modelagem de correntes de densidade não conservativas em tanques de simulação hidráulica [PDF]

, 2011
O trabalho de pesquisa está relacionado com a síntese de novos materiais com potencial aplicação em tanques de simulação hidráulica. Foram produzidos compósitos poliméricos contendo como cargas inorgânicas o grafite e a argila montmorilonita.
Graebin, Ana Paula
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Magnetic Actuation Under DC and AC Fields of Thermoplastic Polyurethane With Strontium Hexaferrite

Advanced Materials Technologies, Volume 10, Issue 13, July 8, 2025.
Magnetic thermoplastic polyurethane composites with strontium hexaferrite (SrFe12O19) are produced through a solvent‐free melt‐mixing technique. These composites display a magnetomechanical actuation mechanism, being able to deform (bend and twist) through DC and AC magnetic fields, showcasing their potential as a promising material for the fabrication
Mariana Martins da Silva, José António Covas, Maria C. Paiva, Mariana P. Proença   +3 more
wiley   +1 more source

Influence of Phase Composition on Sintered Microstructure of Combustion Synthesized Oxides

Advances in Materials Science and Engineering, Volume 2007, Issue 1, 2007., 2007
The effects of powders synthesis methods (urea‐combustion synthesis (CS) and conventional solid‐state (SS) reaction) on the sintering ability, microstructural features, and mechanical properties of Al2O3, MgAl2O4 spinel, and 20 wt.% ZrO2–MgAl2O4 upon sintering at 1625C∘ were investigated.
Ibram Ganesh, J. M. F. Ferreira, Jainagesh A. Sekhar   +2 more
wiley   +1 more source

Obtención de materiales compósitos base mullita, reforzados con partículas de plata [PDF]

, 2017
84 páginas. Maestría en Ciencias e Ingeniería de Materiales.La mullita es un alumino-silicato que se emplea en aplicaciones refractarias tradicionales, presenta elevado punto de fusión (1850°C), excelente resistencia a la fluencia y buena estabilidad ...
ARELLANO MORA, SANTIAGO
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Applying the Estimand Framework to Non‐Inferiority Trials

Pharmaceutical Statistics, Volume 23, Issue 6, Page 1156-1165, November/December 2024.
ABSTRACT Most published applications of the estimand framework have focused on superiority trials. However, non‐inferiority trials present specific challenges compared to superiority trials. The International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use notes in their addendum on estimands and sensitivity ...
Helle Lynggaard, Oliver N. Keene, Tobias Mütze, Sunita Rehal   +3 more
wiley   +1 more source

The Patents Māori Advisory Committee of Aotearoa New Zealand: Lessons for indigenous knowledge protection

The Journal of World Intellectual Property, Volume 27, Issue 2, Page 222-241, July 2024.
Abstract Using freedom of information requests, we examine the operation of the Patents Māori Advisory Committee of Aotearoa New Zealand. The Committee advises the Intellectual Property Office of New Zealand on whether inventions claimed in a patent application are derived from Māori traditional knowledge or from indigenous plants or animals; and if so,
Evana Wright, Daniel Robinson
wiley   +1 more source