Results 111 to 120 of about 108,858 (358)

ISO efficiency curves of a two-phase hybrid stepping motor [PDF]

open access: yes, 2010
Stepping motors are used in numerous applications because of their low manufacturing cost and simple speed control. It is well known that their energetic efficiency is low but actual values are typically not available.
Cottyn, Johannes   +8 more
core   +1 more source

A new method for characterization of small capacity wind turbines with permanent magnet synchronous generator: An experimental study

open access: yesHeliyon, 2018
This work presents a new and useful method to dimension wind turbines and control systems and to optimize their mechanical design. This method allows determining the principal curves for characterizing a small capacity wind turbine designed with a ...
A. Verde   +5 more
doaj  

Stable sensorless control for permanent magnet synchronous motor of mine-used electric locomotive at low speed stage

open access: yesGong-kuang zidonghua, 2018
In order to improve stability of sensorless control for interior permanent magnet synchronous motor of mine-used electric locomotive at low speed stage, an improved pulsating high-frequency voltage injection method was proposed. High-frequency sinusoidal
ZHU Longji, HUANG Qi
doaj   +1 more source

Symmetry Breaking in Meniscus Splitting: Effects of Boundary Conditions and Polymeric Membrane Growth

open access: yesAdvanced Science, EarlyView.
Meniscus splitting in the drying of a viscous polymer dispersion is investigated by focusing on nucleation of multiple nuclei with symmetry breaking and asynchronous nucleus formation. Controlled by spatial boundaries, the first nucleus is generated at a position shifted away from the space center and strongly facilitates the asynchronous second ...
Thi Kim Loc Nguyen   +4 more
wiley   +1 more source

Single‐Cell Transcriptome Profiling Reveals Conserved IFNγ‐IL8 Signaling‐Induced Antibacterial Neutrophil States during Bacterial Infection

open access: yesAdvanced Science, EarlyView.
SummaryThis study constructs a single‐cell immune atlas of Nile tilapia across multiple time points during Streptococcus agalactiae infection, revealing dynamic immune cell responses and subtype transitions. It identifies a conserved IFNr‐STAT1‐IL8 axis driving il8+ neutrophils activation and antibacterial function, supported by cross‐species ...
Xue Zhai   +14 more
wiley   +1 more source

High‐Throughput MicroED for Probing Ion Channel Dynamics

open access: yesAdvanced Science, EarlyView.
High‐throughput MicroED offers a new approach for visualizing ion channel dynamics. This approach reveals NaK’s sodium binding modes and NaK2CNG’s potassium‐induced selectivity filter dilation and gating. By capturing these distinct structures, this work challenges traditional models of ion channel permeation and selectivity. Abstract Ion channels play
Marc J Gallenito   +4 more
wiley   +1 more source

An Exploration of the Performance and Acoustic Characteristics of UAV-Scale Stacked Rotor Configurations [PDF]

open access: yes
As interest grows in rotor- and propeller-driven electric vertical takeoff and landing (eVTOL) aircraft for the Urban Air Mobility market, there is a potential for previously studied concepts to reemerge due to the opportunities afforded by novel ...
Fei, Xiaofan   +5 more
core   +1 more source

Особенности проектирования двигателя с катящимся ротором с дисковым ротором [PDF]

open access: yes, 2012
Сделан обзор существующих конструкций двигателя с катящимся ротором (ДКР). Особое внимание уделено двигателю с дисковой конструкцией ротора. Проведены испытания при различных видах запитывания обмоток ДКР.The review of existent constructions of electric ...
Егоров, Андрей Владимирович   +2 more
core  

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