Results 91 to 100 of about 7,959 (262)

Study on Harmonic Suppression Technology of Electrified Railway Based on MRPC

open access: yes机车电传动, 2014
Nowadays, China’s electrified railway technologies were in the alternating stage. AC-DC and AC-DC-AC locomotive (CRH) running in mixture led to rich harmonics in the traction power supply system.
WANG Wei-an, GUI Wei-hua
doaj  

Deterministic Nucleation of Nanocrystal Superlattices on 2D Perovskites for Light‐Funneling Heterostructures

open access: yesAdvanced Materials, EarlyView.
This work investigates the heterogeneous nucleation of CsPbBr3${\rm CsPbBr}_3$ nanocrystal superlattices along the faces of 2D PEA2PbBr4${\rm PEA}_2{\rm PbBr}_4$ layered perovskite microcrystals. Core–crown and core–shell heterostructure morphologies are obtained.
Umberto Filippi   +6 more
wiley   +1 more source

Hydrophobic MFI‐Type Zeolites via Alkali‐Cation‐Induced Defect Healing: Implications for Adsorbent and Catalyst Design

open access: yesAdvanced Materials, EarlyView.
Sub‐stoichiometric amounts of Na+ or K+ enhance defect healing during Silicalite‐1 (MFI) and TS‐1 calcination by promoting Si–O–Si annealing and healing framework vacancies. The resulting defect‐free zeolites are more hydrophobic and show improved butanol/water separation and improved activity and selectivity in the epoxidation of 1‐hexene, offering a ...
Christos Kanteler   +14 more
wiley   +1 more source

High-frequency Resonant Voltage Caused by AC Electric Locomotive in the Traction Network and Its Protection

open access: yesKongzhi Yu Xinxi Jishu, 2014
Based on the harmonic source of converter’s modulation voltage of AC electric locomotive, it discussed the generation principles of high frequency resonance voltage of traction network.
JIANG Jiajiu, CHEN Hanqin, WAN Guang
doaj  

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

open access: yesAdvanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan   +9 more
wiley   +1 more source

A Modified Method for Harmonic Elimination [PDF]

open access: yesInternational Journal of Computer and Electrical Engineering, 2011
Sandeep V. Rode, Siddharth A. Ladhake
openaire   +1 more source

Flexible Wide Bandgap Electrode System for In situ Cell Sensing and Irreversible Electroporation

open access: yesAdvanced Materials Interfaces, EarlyView.
The paper reports the design and wafer‐level microfabrication of a long‐lived, flexible 3C‐SiC electrode capable of sensitive and in situ cell sensing, as well as electroporation ablation. The work demonstrates a biocompatible and durable electrode platform that can perform reliable electrical interfacing with biological tissues over extended periods ...
Minh Anh Huynh   +3 more
wiley   +1 more source

Additive‐Manufactured, Multifunctional Bioreactor Technology for Dynamic Culture of 3D Bioprinted Tissue Models

open access: yesAdvanced Materials Technologies, EarlyView.
We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger   +9 more
wiley   +1 more source

Comparative analysis of NR and DE methods for multilevel inverters: An experimental case study

open access: yesRevue des Énergies Renouvelables, 2017
This paper presents an experimental performance comparison between differential evolution (DE) algorithm and Newton Raphson (NR) method for solving the optimal switching problem for multilevel inverters with the objective of improving the output AC ...
F. Chabni, R. Taleb, A. Belboula
doaj  

Photolithographic Patterning of Colloidal Quantum Dots Enabled by Plasma‐Induced Ligand Polymerization

open access: yesAdvanced Materials Technologies, EarlyView.
Plasma‐induced ligand polymerization on colloidal quantum dots (QDs) renders them resistant to organic solvents, enabling conventional photoresist‐based photolithography. This approach achieves microscale patterning with feature sizes down to 3 µm, preserving the optical properties of the QDs and offering a simple and scalable route for QD‐based ...
Boram Kim, Jaehyeon Kim, Heeyeop Chae
wiley   +1 more source

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