Resulting Structures
Mostrando 1-12 de 723 artigos, teses e dissertações.
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1. Finite element computational development for thermo-mechanical analysis of plane steel structures exposed to fire
Abstract This article presents a numerical formulation based on finite element procedures for application in nonlinear thermo-mechanical analyses of steel planar structures under fire condition. The mechanical properties of structural elements degrade when subjected to high temperatures, resulting in significant reductions in strength and stiffness. Under th
REM - International Engineering Journal. Publicado em: 2022
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2. DITERPENOS ENT-ABIETANOS DE Euphorbia phosphorea (EUPHORBIACEAE)
Phytochemical study of the roots of Euphorbia phosphorea Mart. (Euphorbiaceae) was carried out through chromatographic techniques, resulting in the isolation of a new ent-abietane diterpene named 11β,12β-dihydroxy-ent-abieta-8(14),13(15)-dien-16,12α-olide (1), and of nine known ent-abietane diterpenes jolkinolide A (2), jolkinolide E (3), euphorin H (4),
Química Nova. Publicado em: 2022
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3. Therapeutics in Radiation-induced Proctopathy: A Systematic Review
Abstract Malignant neoplasms are increasingly prevalent in the daily clinical practice. Up to 61% of patients with pelvic malignancies undergo pelvic radiotherapy in different doses, which may cause intestinal damage, and the rectum is the segment most frequently affected due to its fixed position in the pelvis. Currently, there are several strategies to min
Journal of Coloproctology (Rio de Janeiro). Publicado em: 2022
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4. Effect of Preparation Additives on the Antimicrobial Activity and Cytotoxicity of Polypyrrole
The search for new biomaterials has increased continuously in recent years and, in this context, the application of polypyrrole (PPy) as a promising material for this function has been reported as a result of positive responses, such as bioactivity and biocompatibility. In this study, PPy was obtained through modifications/adaptations made in methodologies o
J. Braz. Chem. Soc.. Publicado em: 2021-06
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5. BIONANOCOMPÓSITOS POLIMÉRICOS À BASE DE MONTMORILLONITA – MATERIAIS DE INTERESSE CONTÍNUO
Polymeric bionanocomposites are versatile materials that have many practical applications. The wide use of these materials is mainly due to their structure and properties, which combine at nanometric scale, the functionality of biopolymers with the excellent stability of inorganic solids, such as the clay minerals family. Montmorillonite is the most widely e
Quím. Nova. Publicado em: 2020-12
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6. 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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7. Load equivalency factors for off-road trucks
Abstract This article addresses an analysis of the Load Equivalency Factor (LEF) for off-road trucks. A new LEF curve for single axles with dual wheels covering trucks from 6.0 to 151.42 tons per axle is proposed, converting various magnitudes of damage from wheel loads to damage caused by the standard axle load of 8.2 tons. Then, this damage ratio was raise
REM, Int. Eng. J.. Publicado em: 16/09/2019
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8. Fatigue failure analysis of HSLA steel sheets holed by conventional and flow drilling processes
RESUMO O processo de furação por escoamento produz buchas para uniões removíveis que podem ser roscadas pelo processo de rosqueamento por conformação, reduzindo etapas da produção de componentes da indústria automobilística e em galpões da construção civil. Aços de alta resistência e baixa liga (ARBL) são empregados em variadas aplicações n
Matéria (Rio J.). Publicado em: 16/09/2019
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9. As características dos jornais como poder cultural: releituras da teoria do jornalismo proposta por Otto Groth
Resumo O jornalismo, como um produto cultural que resulta de necessidades sociais, é objeto de sistemática e complexa exposição por parte de Otto Groth. O objetivo deste texto é analisar as vinculações que o autor estabelece das características do jornalismo com a cultura, entendendo o jornal como materialização especializada de sentidos presentes
Intercom, Rev. Bras. Ciênc. Comun.. Publicado em: 19/08/2019
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10. A FRAMEWORK TO ANALYZE AFFORDANCES WHEN USING BIG DATA AND ANALYTICS IN ORGANIZATIONS: A PROPOSAL
RESUMO Objetivo: O artigo apresenta o desenvolvimento de um framework para analisar como ocorre o uso de big data e analytics nas organizações, o qual está baseado na teoria das affordances e na teoria ator-rede (TAR). Originalidade/valor: Big data e analytics, mesmo usando ferramentas e técnicas que não são novas, têm recebido muita atenção da m�
RAM, Rev. Adm. Mackenzie. Publicado em: 01/08/2019
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11. The use of X-ray to evaluate Brachiaria brizantha seeds quality during seed processing
RESUMO O teste de raios X permite a visualização das estruturas internas das sementes de modo não destrutivo e individualizado, possibilitando o diagnóstico de causas da baixa germinação e pureza de um lote. O objetivo do trabalho foi avaliar a qualidade das sementes de Brachiaria brizantha utilizando-se o teste de raios X e o efeito das etapas de bene
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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12. Synthesis of New Reconfigurable Limited Size FSS Structures Using an Improved Hybrid Particle Swarm Optimization
Abstract This paper describes a new design methodology for reconfigurable printed circuits with limited size, using an improved hybrid particle swarm optimization (HPSO) algorithm, reducing the search space by the definition of negative zones (NZ), regions where the swarm of particles should not travel. The proposed design methodology (HPSO-NZ) is used in th
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 19/06/2019