Results 11 to 20 of about 13,660 (187)

Phase-Pole-Free Images and Smooth Coil Sensitivity Maps by Regularized Nonlinear Inversion. [PDF]

open access: yesMagn Reson Med
ABSTRACT Purpose Phase singularities are a common problem in image reconstruction with auto‐calibrated sensitivities due to an inherent ambiguity of the estimation problem. The purpose of this work is to develop a method for detecting and correcting phase poles in non‐linear inverse (NLINV) reconstruction of MR images and coil sensitivity maps ...
Blumenthal M, Uecker M.
europepmc   +2 more sources

Kinematic draping simulation optimization of a composite B-pillar geometry using particle swarm optimization

open access: yesHeliyon, 2022
The present work presents an algorithmic approach to determine the optimal starting point for any complex geometry draping processes. The time-efficient Kinematic Draping Simulation (KDS) is used to assess the drapability of a geometry depending on many ...
Ricardo Fitas   +3 more
doaj   +1 more source

4D Textiles Made by Additive Manufacturing on Pre-Stressed Textiles—An Overview

open access: yesActuators, 2021
Four-dimensional textiles are textiles that can change shape or function over time by the influence of a stimulus, mainly force and heat. In this review, the focus is on 4D textiles made by additive manufacturing which is built on the concept of 4D ...
Hannah Carlotta Koch   +2 more
doaj   +1 more source

Analysis of Fibre Cross-Coupling Mechanisms in Fibre-Optical Force Sensors

open access: yesSensors, 2021
The force-enhanced light coupling between two optical fibres is investigated for the application in a pressure or force sensor, which can be arranged into arrays and integrated into textile surfaces.
Christian-Alexander Bunge   +3 more
doaj   +1 more source

Polyethylene-Based Carbon Fibers by the Use of Sulphonation for Stabilization

open access: yesFibers, 2015
Polyethylene has great potential as an alternative material for carbon fiber production. Polyethylene can be processed in the economic melt spinning process. These precursors are prepared for the subsequent process step of carbonization by using chemical
Gisa Wortberg   +4 more
doaj   +1 more source

Designing 3D Membrane Modules for Gas Separation Based on Hollow Fibers from Poly(4-methyl-1-pentene)

open access: yesMembranes, 2021
Designing hollow fiber (HF) membrane modules occupies one of the key positions in the development of efficient membrane processes for various purposes.
Svetlana Yu. Markova   +6 more
doaj   +1 more source

Un artesonado del castillo de Vélez Blanco en Ciudad de México

open access: yesArchivo Español de Arte, 2018
El presente artículo desvela que el paradero actual, hasta hoy desconocido, de un artesonado renacentista de los salones nobles del castillo de Vélez Blanco (España) es el Instituto Cultural Helénico en Ciudad de México.
Ismael Motos Díaz
doaj   +1 more source

Realization of an Automated Vertical Warp Stop Motion Positioning

open access: yesActuators, 2015
The tension in the warp yarns is a critical variable in the weaving process. If the warp tension is too high or too low the weaving process will be interrupted. A parameter that directly affects the warp tension is the vertical warp stop motion position.
Frederik Cloppenburg   +2 more
doaj   +1 more source

Information Field Theory for Two Applications in Astroparticle Physics

open access: yesParticles
Information field theory (IFT) provides a powerful framework for reconstructing continuous fields from noisy and sparse data. Based on Bayesian statistics, IFT allows for the approximation of posterior distributions over field-like parameter spaces in ...
Martin Erdmann   +5 more
doaj   +1 more source

A Review on False-Twist Texturing

open access: yesFibers
The annual demand for fibres continues to rise worldwide. Consequently, more and more fibres must be produced to meet this demand, most of which are melt-spun polymeric man-made fibres.
Mathias Ortega   +3 more
doaj   +1 more source

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