Direct Strength Method
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Finite strip method computer application for buckling analysis of thin-walled structures with arbitrary cross-sections
Abstract The Direct Strength Method (DSM) is a well-known formulation presented in the Brazilian standard ABNT NBR 14762:2010, that estimates the strength capacity of cold-formed steel (CFS) members. However, this formulation requires the elastic critical buckling loads as point of departure, regarding local (L), distortional (D) and global (G) modes, which
REM, Int. Eng. J.. Publicado em: 2021-09
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2. Reliability assessment of cold-formed steel beams by the FORM method
Abstract This article presents a procedure for the reliability assessment of cold-formed steel beams based on the Direct Strength Method (DSM) and the Effective Section Method (ESM). Using a comprehensive database, a statistical analysis of the test results was performed to determine the statistical properties of the professional factor random variable. The
REM, Int. Eng. J.. Publicado em: 2021-06
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3. Bioconjugation Between CdTe Quantum Dots and a Cationic Protein: An Analytical Method to Determine Protamine in Drug and Urine Samples
CdTe quantum dots (QD-CdTe) functionalized with mercaptosuccinic acid (MSA) were synthesized in an aqueous medium, varying synthesis time from 0.5 to 4 h. The nanoprobe were characterized by a direct relationship between synthesis time and QD size (2.61-3.04 nm). The QD-CdTe-MSA interacted with protamine (PT), a cationic protein, forming a bioconjugate, thus
J. Braz. Chem. Soc.. Publicado em: 2021-06
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4. 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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5. “Ser alguien”: motivaciones de estudiantes con Necesidades Especiales en Enseñanza Secundaria técnico profesional
Abstract This article shows the results of a qualitative research in technical and vocational schools in Santiago of Chile, whose objective was to inquire about SEN (Special Education Needs) students´ motivations and expectations seeking a technical career. High school education, specialized in technical and professional teaching, has traditionally been see
Educ. Pesqui.. Publicado em: 18/07/2019
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6. EFFECT OF PILATES METHOD ON PHYSICAL FITNESS RELATED TO HEALTH IN THE ELDERLY: A SYSTEMATIC REVIEW
RESUMO O objetivo desta revisão foi analisar as evidências do Pilates na aptidão física relacionada com a saúde de idosos. Foram revisadas as bases de indexação de artigos (Pubmed, Medline, Science Direct, Scielo, Lilacs e Cochrane), com os descritores “Método pilates, idosos e envelhecimento”. Atenderam os critérios de inclusão 41 estudos com
Rev Bras Med Esporte. Publicado em: 2019-02
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7. Distortional Failure and DSM Design of Cold-Formed Steel S-Shaped Beams Under Uniform Bending
Abstract This work reports a numerical investigation on the distortional buckling/post-buckling behaviors, ultimate strength and Direct Strength Method (DSM) design of cold-formed steel S-beams, commonly used in industrial rack systems. The analyzed beams are single-span, under uniform bending, exhibiting two different end support conditions and 5 cross-sect
Lat. Am. j. solids struct.. Publicado em: 2017-12
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8. Direct Determination of N-Nitrosoglyphosate in Technical Glyphosate Using Ion Chromatography with UV Detection
The official method for analyzing N-nitrosoglyphosate (NNG), a relevant impurity, in glyphosate matrix demands complicated instrumentation and operating conditions not available in many laboratories. In this work, we developed a direct, simple, selective and sensitive ion chromatography (IC) method with UV detection for the determination of NNG in samples of
J. Braz. Chem. Soc.. Publicado em: 2017-07
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9. Risk of falls in Brazilian elders with and without low back pain assessed using the Physiological Profile Assessment: BACE study
ABSTRACT Background Low back pain (LBP) is a common musculoskeletal condition among elders and is associated with falls. However, the underlying biological risk factors for falling among elders with LBP has been poorly investigated. The Physiological Profile Assessment (PPA) is a validated fall-risk assessment tool that involves the direct assessment of sen
Braz. J. Phys. Ther.. Publicado em: 22/09/2016
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10. Effect of Web Holes and Bearing Stiffeners on Flexural-Shear Interaction Strength of Steel Cold-Formed C-Channel Sections
Abstract This paper presents an investigation on interaction equation between the required flexural strength, M, and the required shear strength, V, of cold-formed C-channels with web holes and bearing stiffeners. The primarily shear condition test was employed to study total 8 back to back lipped C channel sections of 95 and 100 mm depth when bearing stiffe
Lat. Am. j. solids struct.. Publicado em: 2016-06
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11. Effective low-energy mixing procedure to develop high-fluidity cementitious pastes
Preparing a high fluidity paste is a major step in ultra-high performance concrete (UHPC) development with respect to its self-compacting ability as well as its ultra-high strength. In this regard, some experiments have been carried out in order to study various superplasticizer (SP) addition methods and times. Among these procedures, stepwise and delayed me
Matéria (Rio J.). Publicado em: 2016-03
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12. Lower limb muscle strength is associated with functional performance and quality of life in patients with systemic sclerosis
Background: Complaints of peripheral muscle weakness are quite common in patients with systemic sclerosis (SSc). It is likely that the muscle impairments may reduce the patients' exercise performance, which in turn may decrease their functional capacity and exert a direct impact on their quality of life. Objectives: To assess the peripheral and respiratory
Braz. J. Phys. Ther.. Publicado em: 13/03/2015