Hybrid Formulation
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. FEM-DEM simulation of Uniaxial Compressive Strength (UCS) laboratory tests
Abstract Finite/discrete element methods (FDEM) are hybrid numerical models that use algorithms to analyze the transition from continuous to discontinuous. This type of formulation allows modeling physical laboratory tests with greater proximity to reality. This article proposes to simulate the average behavior of a uniaxial compression test campaign. The te
REM, Int. Eng. J.. Publicado em: 2020-12
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2. Hybrid Hydrogels Based on Polyethylene Glycol Bioconjugated with Silylated-Amyloidogenic Peptides
Hybrid-peptide hydrogel arrangements are a promising alternative to obtaining biocompatible structures at the nanoscopic scale. In this work, a new class of hybrid hydrogels was obtained through the sol-gel process based on the reaction between an amyloid-like octapeptide sequence [RF]4 (where R = arginine and F = phenylalanine) covalently bonded with glycin
J. Braz. Chem. Soc.. Publicado em: 2020-11
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3. Grapeseed Meal Used as Natural Antioxidant in High Fatty Acid Diets for Hubbard Broilers
ABSTRACT The 7-week feeding trial evaluated the effect of 2% grapeseed meal used as natural antioxidant in the diets for slow-growing Hubbard broiler chicks, aged 14 days. The chicks were weighed individually and assigned to two groups (C and E), with 40 chicks per group, housed under conditions of temperature, humidity and light regimen according to the hyb
Braz. J. Poult. Sci.. Publicado em: 19/08/2019
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4. An Extended Linear Discontinuous Method for One-group Fixed Source Discrete Ordinates Problems with Isotropic Scattering in Slab Geometry
RESUMO Atualmente, a obtenção de uma solução numérica precisa para problemas de fonte fixa em ordenadas discretas é relevante em muitas áreas da engenharia e das ciências. Neste trabalho, estendemos o método híbrido Elementos Finitos-Espectro Nodal (FEM-SGF), que foi originalmente desenvolvido para resolver problemas de autovalores de difusão, par
TEMA (São Carlos). Publicado em: 30/05/2019
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5. Finite element modelling to assess the effect of position and size of the piezoelectric layer of a hybrid beam
Abstract A one dimensional finite element model is presented to assess the effect of position and size of the piezoelectric layer of a hybrid beam. The efficient layerwise (zigzag) theory is used for making the finite element model. The 1D beam element has eight mechanical and a variable number of electrical degrees of freedom. The codes are developed in Ma
Lat. Am. j. solids struct.. Publicado em: 03/05/2018
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6. Influence of ZnO and TiO2 Particle Sizes in the Mechanical and Dielectric Properties of Vulcanized Rubber
The novelty of the present study relies on the straightforward sonication of ZnO and TiO2 and incorporation to a complex formulation of latex, with other several organic-inorganic additives that influences the cross-linking reactions. The new elastomer with particles carefully sonicated exhibit improved electrical and mechanical properties. Strong interactio
Mat. Res.. Publicado em: 22/06/2017
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7. High-level Federal Bureaucracy and Policy Formulation: the Case of the Bolsa Família Program
This article is a contribution to the study of the decision-making behind social policies. The literature usually stresses the role of elected politicians and the parliament in framing policies and underestimates governmental stakeholders, who do not hold elected offices, and bureaucrats. This article aims to highlight the active role of high-level federal b
Bras. Political Sci. Rev.. Publicado em: 12/12/2016
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8. Finite element modeling for buckling analysis of hybrid piezoelectric beam under electromechanical loads
A one-dimensional finite element model for buckling analysis of hybrid piezoelectric beams under electromechanical load is presented in this work. The coupled zigzag theory is used for making the model. The inplane displacement is approximated as a combination of a global third order variation across the thickness with an additional layer wise linear variati
Lat. Am. j. solids struct.. Publicado em: 2014-10
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9. A hybrid method BEM-NRM for magnetostatics problems
This article proposes a new method to solve non-linear magnetostatic problems applied to the modeling of electromagnetic devices. A reduced scalar potential formulation is presented and solved by a hybrid BEM-NRM. It has been implemented and tested in a software called MaGot. We will show that the computation time of this new method is very low. Thus, it cou
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2013-12
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10. Hardness and degree of conversion of dental restorative composites based on an organic-inorganic hybrid
This paper presents a factorial design (mixture design) used to analyze the hardness and degree of monomer conversion into composites containing conventional monomers and an organic-inorganic hybrid polymer-based methacryloyloxypropyl trimethoxysilane (MEMO). For this purpose, resins (composites with SiO2) were formulated with the hybrid polymer (polycondens
Mat. Res.. Publicado em: 11/06/2013
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11. Una explicación desde el contexto y contenido de las políticas de salud al modelo híbrido y segmentado de atención primaria en salud en Bogotá
This study has answered the issue on how the context and content of Colombian health policies have influenced the primary health care model that was implemented in Bogotá, from 2004 to 2010, despite another primary care in integral health has already been created. Thus, a qualitative and documental analysis was carried out, which indicated that despite havi
Saúde debate. Publicado em: 2012-09
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12. Reflectivity of Hybrid Microwave Absorbers Based on NiZn Ferrite and Carbon Black
Abstract: This study had as main objective to show that the adequate combination of magnetic and dielectric particles can improve the radar absorbing materials performance. For this, formulations of polyurethane resin loaded with carbon black and NiZn ferrite, with general composition MFe2O4, where M = Ni, Zn or both elements, homogenized by conventional mec
J. Aerosp. Technol. Manag.. Publicado em: 2012-09