Results 71 to 80 of about 9,769 (296)

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Modular Multilevel Converter for Low-Voltage Ride-Through Support in AC Networks

open access: yesEnergies, 2021
New grid-connected systems have imposed additional requirements regarding reliability, power quality, high levels of power processing capacity, and fault support, where power converters have a crucial role in fulfilling these requirements. Overcoming one
Victor Ramon França Bezerra de Souza   +2 more
doaj   +1 more source

Space Vector Modulation Techniques for Multilevel Converters – a survey [PDF]

open access: yes, 2006
This paper presents a survey of most recent, simple and efficient Space Vector Modulation algorithms for multilevel converters. These algorithms avoid trigonometric and other complex operations, leading to more simple and cost efficient ...
García Franquelo, Leopoldo   +3 more
core  

Developed cascaded multilevel inverter topology to minimise the number of circuit devices and voltage stresses of switches [PDF]

open access: yes, 2014
In this study, a novel structure for cascade multilevel inverter is presented. The proposed inverter can generate all possible DC voltage levels with the value of positive and negative.
Adjami, Ali   +3 more
core   +1 more source

Mapping the Cerebral Organoid Landscape: A Systematic Review of Preclinical 3D Models in Neuroscience

open access: yesAdvanced Healthcare Materials, EarlyView.
Cerebral organoids are transforming brain research, yet the field remains fragmented. This comprehensive systematic review maps 738 studies published between 2014 and 2024 to uncover trends, gaps, and opportunities across neuroscience. Introducing OrganoidMap—an interactive, open‐access platform to explore and compare models—this work enables ...
Anna Wolfram   +10 more
wiley   +1 more source

A simplified space-vector modulation algorithm for four-leg NPC converters [PDF]

open access: yes, 2016
To interface generation sources and loads to four-wire distribution networks is important to use power converters and modulation methods which provide high performance, flexi¬bility and reliability.
Cardenas, Roberto   +4 more
core   +2 more sources

Sprayable Polymer Blends With Short‐Chain Surface Segregation for Preventing Postoperative Abdominal Adhesions

open access: yesAdvanced Healthcare Materials, EarlyView.
Adhesions’ high occurrence rates and high morbidity render them a critical challenge to be addressed. Current prevention methods, such as physical barriers, have many limitations, resulting in inconsistent safety and efficacy. This study demonstrates the potential for sprayable polymeric materials as an adhesion barrier.
Robert J. Morris III   +7 more
wiley   +1 more source

Capacitor Voltage Balancing Strategy of NPC Three-level Dual-active Bridge Converter Based on Redundant Vector

open access: yesKongzhi Yu Xinxi Jishu, 2023
The neutral point clamped (NPC) three-level dual-active bridge (DAB) converter can be applied at higher voltage levels and in a wider operating range than the traditional DAB converter, and therefore it is more promising in future applications.
LIU Chao, LI Chi
doaj   +1 more source

Active neutral point clamped converter for equal loss distribution

open access: yesIET Power Electronics, 2014
Active neutral point is the most attractive inverter topology in many applications such as a photovoltaic system because of the equal loss distribution among switches. This study presents a new single‐phase five‐level active neutral‐point clamped converter topology. It can be applied to achieve optimal total harmonic distortion.
Taallah, Ayoub, Mekhilef, Saad
openaire   +2 more sources

A Superhydrophobic 3D Cell Culture System Reveals the Mechanobiological Role of Cancer‐Associated Fibroblasts in Prostate Cancer Metastasis

open access: yesAdvanced Healthcare Materials, EarlyView.
A superhydrophobic 3D cell culture platform enables rapid and consistent formation of heterotypic tumor–stroma clusters, and reveals how physiological shear conditions influence metastatic signaling. Mechanical stimulation of cancer‐associated fibroblasts promotes sustained cytokine secretion and survival‐promoting pathways, showing how multicellular ...
Alexandria T. Carter   +5 more
wiley   +1 more source

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