Results 61 to 70 of about 27,886 (212)

Remanufacturing approaches contributing to sustainable engineering Abordagens de remanufatura - uma contribuição para engenharia sustentável

open access: yesGestão & Produção, 2006
Increasing use of resources by an increasing population with unequally distributed wealth make sustainability an urgent topic to pay attention to. A reference model for sustainability in engineering is presented referring to education and research ...
Günther Seliger   +2 more
doaj   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

open access: yesPolymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco   +11 more
wiley   +1 more source

Engenharia Mecânica

open access: yes, 2018
O livro Engenharia Mecânica representa vinte disciplinas da Engenharia Mecânica, em contexto quotidiano, por meio de quadros feitos com a técnica mosaico em oficinas com estudantes do Ensino Fundamental. Essa obra compôe a série Engenharia & Arte, que é fruto de um projeto de mesmo nome realizado pelo Instituto Federal de Minas Gerais (IFMG) Campus
Rodrigues-Silva, Jefferson   +5 more
openaire   +2 more sources

Brown–Proschan Repair Policy for Repairable Systems Using the Discrete Weibull Failure Distribution and Markov Chains

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT A repairable system operates under a maintenance strategy involving scheduled preventive maintenance (PM) and corrective repair actions following failures. This study develops an exact analytical methodology using Markov chains with discrete states and time to calculate the expected number of failures E[N(t)]$\mathop {\mathbb {E}}[N(t)]$ under
Danilo G. O. Valadares   +3 more
wiley   +1 more source

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

open access: yesSmall, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva   +8 more
wiley   +1 more source

Tailoring Microstructure and Hardness in Maraging 300 Steel via 2.4 wt.% Niobium Addition and Controlled Aging Treatments

open access: yessteel research international, EarlyView.
High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto   +9 more
wiley   +1 more source

Structural capacity of precast concrete walls with openings: A parametric study on connection types and reinforcement ratios

open access: yesStructural Concrete, EarlyView.
Abstract The structural role of precast concrete walls with openings is often overlooked in design practice due to concerns about reduced stiffness, stress concentration, cracking around openings, and potential unexpected failure modes under seismic loading.
Gonçalo Marreneca   +2 more
wiley   +1 more source

Engenharia

open access: yes, 2021
Ana Paula Taveira Alves   +15 more
openaire   +2 more sources

Evaluation of systemic consequences of brachycephalic obstructive airway syndrome in dogs

open access: yesVeterinary Record, EarlyView.
Abstract Background Brachycephalic obstructive airway syndrome (BOAS) results from upper airway anatomical abnormalities and may cause systemic effects depending on severity. Methods A prospective, case‒control and observational study was conducted.
Andréia Coutinho Facin   +11 more
wiley   +1 more source

Editorial

open access: yesHolos, 2012
O quinto volume da Revista HOLOS de 2011 traz 17 artigos nas seguintes áreas: 12 na engenharia, 02 no desenvolvimento de software, 02 no ensino e 01 sobre a cultura do Rio Grande do Norte. Os artigos da área de engenharia permeiam a engenharia de minas,
José Yvan Pereira Leite
doaj   +1 more source

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