Composite Column
Mostrando 1-12 de 35 artigos, teses e dissertações.
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1. Optimum design of steel columns filled with concrete via genetic algorithm: environmental impact and cost analysis
Abstract The use of concrete-filled tubular columns as part of structural systems has steadily increased throughout the years. The growing demand for structural elements of this nature is a direct result of the possibility to use various cross-section shapes that have increased strength, along with resistance to fire and other corrosive agents. The main obje
REM - International Engineering Journal. Publicado em: 2022
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2. Application of quality by design approach in RP-HPLC method development for simultaneous estimation of saxagliptin and dapagliflozin in tablet dosage form
A simple, sensitive, precise, accurate and robust high performance liquid chromatographic method has been developed for simultaneous estimation of saxagliptin (SAXA) and dapagliflozin (DAPA) in pharmaceutical formulation. Design of experiments (DoE) was applied for multivariate optimization of the experimental conditions of RP-HPLC method. Risk assessment wa
Braz. J. Pharm. Sci.. Publicado em: 24/10/2019
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3. Experimental analysis of built-up cold-formed steel lipped channel stub column
Abstract This article reports the results of experimental tests conducted on built-up cold-formed steel (CFS) stub columns, composed of double lipped channel members connected with self-drilling screws, which will be applied as the chord members of laced columns. These experiments aim to quantify the effect of four distinct web fastener layouts on the compos
REM, Int. Eng. J.. Publicado em: 16/09/2019
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4. EXPERIMENTAL INVESTIGATION ON CONCRETE FILLED STEEL TUBULAR COLUMN TO FOUNDATION CONNECTIONS SUBJECTED TO COMBINED AXIAL AND LATERAL CYCLIC LOADING
Abstract This study focuses on performance of CFT column to foundation connections subjected to combined axial and lateral cyclic loading. Experimental investigations were carried out on five specimens with exposed column base and embedded column base connections. The parameters considered were number of stiffeners and embedment depth of CFT column. The forc
Lat. Am. j. solids struct.. Publicado em: 01/07/2019
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5. Optimization of an Activity Assay of Coprinus Cinereus Peroxidase
ABSTRACT To seek a simple, rapid and sensitive Coprinus cinereus Peroxidase (CIP) activity assay, a convenient one-factor-at-a-time (OFAT) method and a response surface methodology (RSM) were used. The recombinant CIP expressed in Pichia pastoris was purified with the Ni-NTA spin column. Based on the results of catalytic efficiency (kcat/Km) analysis, 2,2'-a
Braz. arch. biol. technol.. Publicado em: 14/11/2018
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6. Local buckling and post-critical behavior of thin-walled composite channel section columns
Abstract This work presents a study of the behavior, performance and failure of thin-walled composite channel section columns. The study is carried-out using nonlinear finite element models of laminated columns, including geometric imperfections and material failure, as well as approximate analytical solutions based on the Classical Lamination Theory. The ac
Lat. Am. j. solids struct.. Publicado em: 19/07/2018
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7. Central Composite Design to Optimizate the Derivatization Procedure for Analysis of Biogenic Amines by HPLC-UV
A simple benzoylation procedure was optimized for the biogenic amines derivatization prior to high-performance liquid chromatography determination. The significant factors affecting biogenic amine benzoylation yield were optimized by central composite design (CCD). The obtained optimal conditions resulted in a chromatographic peaks area increase with fewer i
J. Braz. Chem. Soc.. Publicado em: 2017-04
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8. A general method for designing non-symmetrical composite steel and concrete columns
Abstract The study of non-symmetrical composite columns is complex and European and North American standards only approach this issue superficially. In this text, a new proposal is presented for non-symmetrical composite column design subject to biaxial bending and axial compression, based on the compatibility of the deformation method, which considers the n
REM, Int. Eng. J.. Publicado em: 2016-09
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9. Transporte de \ CU POT.2+\ em liners compostos de solo argiloso compactado (CCL) e geocomposto bentonítico (GCL) / \ CU POT.2+\ transport in composite liners made with compacted clay soil (CCL) and geosynthetic clay liner (GCL)
Neste trabalho foi avaliado o desempenho de liners compostos frente a soluções de \ CU\ \ CL IND.2\ .2\ H IND.2\ \ O\ . Foram utilizados um solo argiloso compactado (CCL) da Formação Corumbataí (interior do estado de São Paulo) e um geocomposto bentonítico (GCL) de fabricação nacional. Quatro corpos de prova foram preparados para a realização do e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/09/2011
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10. Desenvolvimento e validação de método analítico para quantificação de ácido pfáffico em Hebanthe eriantha / Development and validation of analytical method for quantification of pfáffico acid in Hebanthe eriantha
Hebanthe erianthe (Amaranthaceae) is known as "Brazilian ginseng¿, due to the similarity of its roots with those of Panax ginseng (Araliaceae), the "Korean ginseng¿. Its roots, with proved antineoplastic activity, are constituted by saponins, which during hydrolysis, release saccharides and free molecules of pfaffic acid, a nortriterpene. Pfaffic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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11. Inelastic analysis of semi-rigid composite structures under fire conditions
This paper presents the application of a proposed numerical approach, denoted as SAAFE Program (System for Advanced Analysis for Fire Engineering), developed to provide an inelastic analysis of steel and composite (steel-concrete) 2D semi-rigid framed-structures under fire conditions. The proposed structural model allows an accurate description of the struct
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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12. Análise estrutural de vigas mistas de aço e concreto em perfis formados a frio: estudo da ligação viga-pilar e da região de momento negativo / Cold-formed steel and concrete composite beams: study of beam-to-column connection and region of hogging bending
No Brasil, o emprego de estruturas de aço constituídas por perfis formados a frio tem crescido consideravelmente, em virtude da ampla disponibilidade de laminados planos no mercado (chapas finas), bem como pela busca de soluções estruturais mais competitivas. Nesse cenário, pode-se destacar as estruturas mistas de aço e concreto destinadas aos edifíci
Publicado em: 2010