Search Results - "Martins, A.F"

Dietary phytate induces subclinical mechanical allodynia in mice by Matias, D.O., Sisnande, T., Martins, A.F., Amaral, M.J. do, Santos, B.L.R., Miranda, A.L.P., Lima, L.M.T.R.

“…Neuropathic pain is a condition with varying origins, including reduced dietary micronutrient intake. Phytate is a polyphosphate found in seeds and grains that…”
Get full text

Joining sheet panels to thin-walled tubular profiles by tube end forming by Alves, Luis M., Dias, Eduardo J., Martins, Paulo A.F.

“…This paper is focused on novel utilizations of the fundamental modes of deformation of tube end forming for assembling sheet panels to thin-walled tubular…”
Get full text

Spectroscopic analysis of LYSO:Ce crystals by Martins, A.F., Carreira, J.F.C., Rodrigues, J., Sedrine, N. Ben, Castro, I.F.C., Correia, P.M.M., Veloso, J.F.C.A., Rino, L., Monteiro, T.

“…Rare earth orthosilicates are among the most widely used scintillator materials in the last decades. Particularly, lutetium-yttrium oxyorthosilicate (LYSO) is…”
Get full text

A Physics-Informed Neural Networks (PINN) oriented approach to flow metering in oil wells: an ESP lifted oil well system as a case study by Franklin, Taniel S., Souza, Leonardo S., Fontes, Raony M., Martins, Márcio A.F.

“…A virtual flow meter (VFM) is an interesting and growing method to replace or support expensive and high-maintenance dependent physical flow rate sensors in…”
Get full text

Optimization of a True Moving Bed unit and determination of its feasible operating region using a novel Sliding Particle Swarm Optimization by Nogueira, Idelfonso B.R., Martins, Márcio A.F., Requião, Reiner, Oliveira, Amanda R., Viena, Vinícius, Koivisto, Hannu, Rodrigues, Alírio E., Loureiro, José M., Ribeiro, Ana M.

“…•A novel method to design and optimize a True Moving Bed unit is proposed.•A particle swarm optimization to deal with local minima problem is developed.•The…”
Get full text

Single‑Stroke Attachment of Sheets to Tube Ends Made from Dissimilar Materials by Alves, Luis M, Reis, Tiago J, Afonso, Rafael M, Martins, Paulo A F

“…This paper presents a new joining method by a forming process for attaching sheets to tube ends. The process consists of two different forming stages carried…”
Get full text

A flexible sheet-bulk forming demonstrator by Magrinho, João P., Silva, Maria B., Martins, Paulo A.F.

“…Sheet-bulk forming (SBF) processes based on a combination of deep drawing and upsetting are being increasingly used to produce new sheet metal parts with…”
Get full text

Embedded predictive controller based on fuzzy linear parameter-varying model: A hardware-in-the-loop application to an ESP-lifted oil well system by Matos, Victor S., Santana, Bruno A., Chagas, Thiago P., Martins, Márcio A.F.

“…This work addresses the development of a fuzzy infinite horizon model predictive control (FIHMPC) strategy and its application to an ESP-lifted oil well system…”
Get full text

A combined numerical and experimental approach for determining the contact temperature in an industrial ironing operation by Üstünyagiz, Esmeray, Nielsen, Chris V., Christiansen, Peter, Martins, Paulo A.F., Altan, Taylan, Bay, Niels

“…Tribological conditions in forming operations depend on several parameters such as tool-workpiece interface pressure, surface expansion, sliding length,…”
Get full text

The role of defects and boundary and volume inhomogeneities in the field-induced director reorientation in nematic liquid crystals confined between parallel plates by Martins, A.F., Véron, A.

“…A deep understanding of the director dynamics in nematic liquid crystals confined between parallel plates is important for display technology as well as for…”
Get full text

A strain acceleration method to identify the onset of diffuse necking by Sampaio, Rui F.V., Pragana, João P.M., Bragança, Ivo M.F., Silva, Carlos M.A., Martins, Paulo A.F.

“…This paper presents an innovative ‘strain acceleration method’ for determining the onset of diffuse necking in sheet forming tests using data obtained from…”
Get full text

Multi-planar injection lap riveting by Sapage, Miguel S.T., Pragana, João P.M., Sampaio, Rui F.V., Bragança, Ivo M.F., Silva, Carlos M.A., Martins, Paulo A.F.

“…•Multi-planar hybrid busbar joint consisting of a three-conductor rake-shaped elbow.•Innovative assembly of the rake-shaped elbow by injection lap riveting in…”
Get full text

Dynamics of confined nematic liquid crystals: Computer simulation of field-induced band formation in the presence of defects anchored on solid boundary surfaces by Véron, A., Martins, A.F.

“…We present numerical simulations of the flow and director response of a nematic liquid crystal (5CB), confined between parallel plates, when an electric field…”
Get full text

Introducing a novel sheet test specimen for biaxial stretching under uniaxial loading by Sampaio, Rui F.V., Pragana, João P.M., Bragança, Ivo M.F., Silva, Carlos M.A., Martins, Paulo A.F.

“…This paper introduces a novel sheet test specimen that plastically deforms under biaxial stretching when subjected to uniaxial loading in conventional testing…”
Get full text

Theory and numerical simulation of field-induced director dynamics in confined nematics investigated by nuclear magnetic resonance by Martins, A.F., Véron, A.

“…We investigate the director reorientation in a nematic liquid crystal confined between two parallel plates and subjected to both a magnetic and an electric…”
Get full text

Surface anchoring energy of an octyl-cyanobiphenyl liquid crystal (8CB) deduced from the shear stress response by Véron, A., Martins, A.F.

“…The surface anchoring energy of the nematic liquid crystal 4-octyl-4ʹ-cyanobiphenyl (8CB) has been deduced from the transient shear stress response, making use…”
Get full text

Influence of corrosion on the electrical and mechanical performance of hybrid busbars by Sampaio, Rui F.V., Pragana, João P.M., Bragança, Ivo M.F., Silva, Carlos M.A., Fernandes, João C.S., Martins, Paulo A.F.

“…This paper is focused on the electrical and mechanical performance of aluminum-copper hybrid busbars subjected to corrosion over time. Two different types of…”
Get full text

An Automatic Tuning Method for Model Predictive Control Strategies by Fontes, Raony M, Martins, Márcio A. F, Odloak, Darci

“…The proposed auto-tuning method is a layer of receding horizon optimization problem whose objective function is able to consider the performance/robustness…”
Get full text

A robustly model predictive control strategy applied in the control of a simulated industrial polyethylene polymerization process by Nogueira, Idelfonso B.R., Fontes, Raony M., Ribeiro, Ana M., Pontes, Karen V., Embiruçu, Marcelo, Martins, Márcio A.F.

“…This work investigates the quality control problem of polyethylene grades produced in an industrial polymerization plant. The plant is represented by a…”
Get full text

Novel Switch Stabilizing Model Predictive Control Strategy Applied in the Control of a Simulated Moving Bed for the Separation of Bi-Naphthol Enantiomers by Nogueira, Idelfonso B. R, Martins, Márcio A. F, Rodrigues, Alírio E, Loureiro, José M, Ribeiro, Ana M

“…The control of cyclic processes is an open issue in the literature because of their very peculiar dynamic behavior. Thus, deeper studies about this problem are…”
Get full text