Results 71 to 80 of about 8,004 (311)

Electrical Aging of the Insulation of Low Voltage Machines: Model definition and test with the Design of Experiments [PDF]

open access: yes, 2013
The aim of this paper is to present a method for modeling the lifespan of insulation materials in a partial discharge regime. Based on the design of experiments, it has many advantages: it reduces the number of time-consuming experiments, increases the ...
Nadine Lahoud   +7 more
core   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Investigation of propagation of partial discharges in power transformers and techniques for locating the discharge

open access: yes, 2005
The location of partial discharges in a power transformer can be determined based on the characteristics of the transfer function from the discharge source to the measuring terminal.
Crossley, P.A.   +5 more
core   +1 more source

Analysis and improvement of grounding transformer's ability to resist outlet short-circuit

open access: yes电力工程技术
Currently, there are issues such as insufficient research on the physical characteristics of windings in grounding transformers under outlet short circuit conditions and a high number of damage accidents.
LI Jiayang   +5 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Study of innovative electric machines for high efficiency vehicular traction applications [PDF]

open access: yes, 2013
This thesis collects some of the work accomplished during the PhD research activity focused on the study of special electric machines for vehicle traction applications. The work is divided into due parts.
mezzarobba, mario
core  

Design and Implementation of a Transformer Winding Machine with Buck-Boost Converter-Based DC Motor Drive

open access: yesRekayasa
This research presents the design and implementation of a high-frequency transformer winding machine driven by a DC motor with a Buck-Boost converter to produce transformers accurately and efficiently.
Muhammad Rizani Rusli   +5 more
doaj   +1 more source

Modelling of a 400-kV MSCDN Reactor for Computation of Voltage and Field Distributions During Switching Transients

open access: yesIEEE Access, 2018
In this paper, a model for the reactor of a 400-kV mechanically switched capacitor with damping network (MSCDN) based on an equivalent circuit representation is developed.
Haziah Abdul Hamid   +3 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Inter-turn Voltage in Hairpin Winding of Traction Motors Fed by High-Switching Frequency Inverters

open access: yes, 2020
In this paper, the voltage distribution in hairpin winding of traction motors fed by high-switching frequency inverters is discussed. The voltage distribution is calculated using a method based on a combination of analytical and numerical analyses, the ...
Nicola Bianchi   +2 more
core   +1 more source

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