Results 51 to 60 of about 229,801 (203)

Thermal Evaluation of 3D‐Printed Triply Periodic Minimal Surface Compact Heat Exchanger Using Hexagonal Boron Nitride Photopolymeric Composite

open access: yesPolymer Composites, Volume 46, Issue 18, Page 16760-16770, 20 December 2025.
Investigation of Thermal Behavior in 3D‐Printed TPMS Heat Exchangers utilizing h‐BN Photopolymeric Composites. ABSTRACT This study reports the first investigation of the thermal behavior of compact heat exchangers (HXs) with complex geometries 3D‐printed using a photopolymeric composite as the base material.
Gabriel Benedet Dutra   +6 more
wiley   +1 more source

New Technique for Evaluation of Global Vibration Levels in Rolling Bearings

open access: yesShock and Vibration, 2002
In the last years new technologies and methodologies have been developed for increasing the reliability of fault diagnosis in mechanical equipment, mainly in rotating machinery.
Rui Gomes Teixeira de Almeida   +2 more
doaj   +1 more source

Parametric cohesive zone analysis of bi-adhesive single-step joints

open access: yesSN Applied Sciences, 2023
The industry has advanced in replacing traditional joining methods, such as screwing/riveting and welding, especially the aeronautical and automotive industries, which have adopted the adhesive bonding method.
D. F. T. Carvalho   +4 more
doaj   +1 more source

A relação Universidade-Indústria: um caso de transferência da tecnologia em engenharia mecânica e Gestão Industrial [PDF]

open access: yes, 2008
A inovação nas pequenas e médias empresas industriais do ramo da Engenharia Mecânica émuitas vezes inexistente ou incipiente, podendo ser facilmente incrementada através de umestreito relacionamento e cooperação com as Universidades e/ou os seus ...
A. Barata da Rocha, F. Jorge Lino Alves
core  

Synthesis, Characterization, and Enhanced Antibacterial Properties of Nanocomposites Based on Cu, Ag, and Au Nanoparticles Supported on the Coordination Polymer [Zn2(1,3‐bdc)(Bzim)2]

open access: yesChemistrySelect, Volume 10, Issue 47, December 15, 2025.
Nanocomposites based on Cu, Ag, or Au nanoparticles supported on the coordination polymer [Zn2(1,3‐bdc)(Bzim)2] were successfully synthesized, maintaining high structural stability. These materials demonstrated significantly superior antibacterial activity, reaching up to 16 times the efficacy of amoxicillin.
Elibe S. Souza   +7 more
wiley   +1 more source

Adhesion strength of flame sprayed ceramic coatings obtained by robotic projection

open access: yesMillenium, 2019
Introduction: One of the possible applications of ceramic thermal barriers is in shells (permanent moulds – die casting). The moulds` capacity to support very high temperatures (up to 1600 °C) plays a crucial role in the selection of materials due to the
Eurico Seabra   +3 more
doaj   +1 more source

Environmental and economic assessment of food additive production from mushroom bio-residues

open access: yesCleaner Environmental Systems, 2022
This work analysed the environmental and economic impacts of extracts enriched in ergosterol and vitamin D2 production from bio-residues of Agaricus Bisporus mushrooms.
Sara M. Pinto   +5 more
doaj   +1 more source

T.02 - Transmissões por correias [PDF]

open access: yes, 2017
Neste documento aborda-se o tema das transmissões por correias, o qual é lecionado no âmbito da unidade curricular Órgãos de Máquinas II, do curso de Mestrado Integrado em Engenharia Mecânica da Universidade do Minho.
Dourado, Nuno   +3 more
core  

When Barchan Dunes Move Over Craters

open access: yesGeophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract We investigate the possible outcomes of a subaqueous barchan moving over a crater‐like depression in the bed. For that, we carried out experiments where we varied the dune size, crater and grain diameters, and flow velocities. We found that subaqueous barchans can be blocked, destroyed, or pass over craters, with transitional situations, and ...
P. V. R. Plácido   +3 more
wiley   +1 more source

Course on fatigue and fracture mechanics : influence of residual stresses and post-welding improvement methods [PDF]

open access: yes, 2001
Sumário da Lição, apresentada para Provas de Agregação em Engenharia Civil, especialidade de Mecânica das Estruturas e dos Materiais, da Faculdade de Ciências e Tecnologia da Universidade de ...
Nussbaumer, Alain
core   +1 more source

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