Results 61 to 70 of about 183,779 (306)

Acute caffeine treatment protects the developing retina from ischemia‐induced cell death

open access: yesFEBS Open Bio, EarlyView.
Caffeine reduces cell death in the developing retina under ischemia (OGD). This effect does not involve BDNF upregulation or antioxidant pathways (NRF2/VEGF). Neuroprotection occurs mainly through adenosine A2A receptor antagonism, decreasing glutamate release and excitotoxicity, highlighting caffeine's potential as an acute neuroprotective agent in ...
Amanda Alves Nascimento   +6 more
wiley   +1 more source

Optimization Methods to Reduce Capacitor Stress in Modular Multilevel Converters

open access: yesIEEE Access, 2020
Modular multilevel converters consist of many capacitor half-bridge or full-bridge converter cells. Stresses on the capacitors result from peak capacitor voltage, capacitor voltage ripple and current ripple.
Nikola Petranovic   +3 more
doaj   +1 more source

Super‐Refractory Status Epilepticus (SRSE) in a Patient With Compound Heterozygous OPA1 Variants: Case Report and Literature Review

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Super‐Refractory Status Epilepticus (SRSE) is a rare, life‐threatening neurological emergency with unclear etiology in many cases. Mitochondrial dysfunction, often due to disease‐causing genetic variants, is increasingly recognized as a cause, with each gene producing distinct pathophysiological mechanisms.
Pouria Mohammadi   +2 more
wiley   +1 more source

FOUR PHASE INTERLEAVED BOOST CONVERTER - ANALYFOUR PHASE INTERLEAVED BOOST CONVERTER - ANALYSIS AND VERIFICATIONSIS AND VERIFICATION [PDF]

open access: yesActa Electrotechnica et Informatica, 2018
This paper deals with an analysis of four phase interleaved DC-DC converter for higher power application in continuous conduction mode. The interleaved topology is widely used due to their advantage as lower input current ripple which means volume ...
Slavomir KASCAK   +3 more
doaj   +1 more source

Variable Multiple Interleaved Bi-Directional DC/DC Converter with Current Ripple Optimization

open access: yesApplied Sciences, 2023
In order to reduce the current ripple and improve the power density of the system, the multiple structure design is generally adopted by the traditional bidirectional DC/DC converter.
Jiandong Duan   +5 more
doaj   +1 more source

Analysis of Output Current Ripple of Three-phase PWM Inverter under Discontinuous Modulation Techniques [PDF]

open access: yes, 2010
In this paper, an analysis of output current ripple of three-phase PWM inverters with discontinuous modulation is presented. The analytical expressions for discontinuous modulation injection signal are derived.
Dahono, Pekik Argo
core  

Phase cascade lattice rectifier array: an exactly solvable nonlinear network circuit [PDF]

open access: yes, 2018
An exact analysis of a 2-D lattice network consisting of N × N sites with rectifier and AC source elements with controllable phases reveals a method for generating ripple-free DC power without the use of any filtering circuit elements.
Chen, J.   +6 more
core   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu   +10 more
wiley   +1 more source

Prediction of PWM-Induced Current Ripple in Subdivided Stator Windings Using Admittance Analysis

open access: yesEnergies, 2019
Subdividing stator winding is a way to lower the DC link voltage value in electric drives and reduce the stress on motor insulation. Coupled windings sharing the same stator teeth are modelled in order to evaluate the link between voltages disparities ...
Antoine Cizeron   +3 more
doaj   +1 more source

An Novel Six-Segment Modulation Strategy for Three-Phase Isolated PFC Converter

open access: yesEnergies, 2022
A three-phase isolated rectifier features bidirectional power conversion and galvanic isolation, and is attractive as a high-efficiency energy conversion system.
Huaibao Wang   +6 more
doaj   +1 more source

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