Results 31 to 40 of about 80,765 (223)

Hardware-Based Comparative Analysis of Multilevel Inverter Topologies for Integrated Motor Drives Considering Overload Operation

IEEE Open Journal of Power Electronics, 2023
With today's demand for increased industrial process automation a trend towards Integrated Motor Drives (IMDs) has evolved allowing a low complexity and compact installation of the drive system.
Gwendolin Rohner, Tino Gfrorer, Pascal S. Niklaus, Jonas Huber, Dominik Bortis, Mario Schweizer, Johann W. Kolar   +6 more
doaj   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source

Simulated optical performance of soft contact lenses on the eye.

PLoS ONE, 2019
PurposeTo evaluate the impact of soft contact lens eye-fit on optical power by computational modelling and to produce correction maps for reversing this impact during the design process.MethodsFinite element models of spherical and toric hydrogel contact
Ahmed Abass, Samantha Stuart, Bernardo T Lopes, Dong Zhou, Brendan Geraghty, Richard Wu, Steve Jones, Ilse Flux, Reinier Stortelder, Arnoud Snepvangers, Renato Leca, Ahmed Elsheikh   +11 more
doaj   +1 more source

Frequency Stability Support of a DFIG to Improve the Settling Frequency

IEEE Access, 2020
To ensure the frequency stability of a power grid, the settling frequency following a frequency event should be stabilized within the maximum steady-state frequency deviation (SSFD) band.
Jae Ik Yoo, Yong Cheol Kang, Eduard Muljadi, Kyu-Ho Kim, Jung-Wook Park   +4 more
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Influence of FACTS Device Implementation on Performance of Distribution Network with Integrated Renewable Energy Sources

Energies, 2020
In the modern power system, Flexible Alternating Current Transmission System (FACTS) devices are widely used. An increased share of the distributed generation (DG) and the development of microgrids change the power flows in the existing distribution ...
Filip Relić, Predrag Marić, Hrvoje Glavaš, Ivica Petrović   +3 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Design and Control of Modular Multilevel Converter for Voltage Sag Mitigation

Energies, 2022
Voltage sag in a power system is an unavoidable power quality issue, and it is also an urgent concern of sensitive industrial users. To ensure the power quality demand and economical operation of the power system, voltage sag management has always drawn ...
Fazal Muhammad, Haroon Rasheed, Ihsan Ali, Roobaea Alroobaea, Ahmed Binmahfoudh   +4 more
doaj   +1 more source

What Do Large Language Models Know About Materials?

Advanced Engineering Materials, EarlyView.
If large language models (LLMs) are to be used inside the material discovery and engineering process, they must be benchmarked for the accurateness of intrinsic material knowledge. The current work introduces 1) a reasoning process through the processing–structure–property–performance chain and 2) a tool for benchmarking knowledge of LLMs concerning ...
Adrian Ehrenhofer, Thomas Wallmersperger, Gianaurelio Cuniberti   +2 more
wiley   +1 more source

Thermodynamic analysis of gas turbine performance using the enthalpy–entropy approach

Case Studies in Thermal Engineering, 2022
The enthalpy–entropy approach, which is a rigorous and accurate method, was used to model the actual cycle of a gas turbine (GT). The constructed GT C# programming language code was used to study the effects of ambient temperature (Tam), relative ...
Khaled A. Naeim, Ahmed A. Hegazi, Mohamed M. Awad, Salah H. El-Emam   +3 more
doaj   +1 more source