Results 91 to 100 of about 2,109 (236)

Unified Non-Inverting and Inverting PWM AC-AC Converter With Versatile Modes of Operation [PDF]

open access: yes, 2016
This paper proposes unified non-inverting and inverting AC-AC converter (UNI-AC) using pulse width modulation (PWM) for the utility voltage compensation.
Hu, Yihua, Li, Peng
core   +1 more source

Gut microbiome compositional and functional features associate with Alzheimer's disease pathology

open access: yesAlzheimer's &Dementia, Volume 21, Issue 7, July 2025.
Abstract BACKGROUND The gut microbiome is a potentially modifiable risk factor for Alzheimer's disease (AD); however, understanding of its composition and function regarding AD pathology is limited. METHODS Shallow‐shotgun metagenomics was used to analyze the fecal microbiome of participants in the Wisconsin Microbiome in Alzheimer's Risk Study ...
Jea Woo Kang   +22 more
wiley   +1 more source

Power quality improvement using dynamic voltage restorer in distribution system PT. DSS Power Plant

open access: yesMATEC Web of Conferences, 2018
In the power plant power system, voltage drops often occur and one of the contributing factors is a short circuit that affects the performance of motor drivers on the mills in the generator.
Martiningsih Wahyuni   +2 more
doaj   +1 more source

The science at HIVR4P 2024: The era of choice in biomedical HIV prevention

open access: yesJournal of the International AIDS Society, Volume 28, Issue 7, July 2025.
ABSTRACT Introduction HIVR4P 2024, the 5th HIV Research for Prevention Conference, took place in Lima, Peru, 6–10 October 2024. The conference focused on new developments in HIV prevention from basic research to new product development and implementation science.
Beatriz Grinsztejn   +26 more
wiley   +1 more source

Compensation of Single-Phase and Three-Phase Voltage Sag and Swell Using Dynamic Voltage Restorer [PDF]

open access: yes, 2012
DVR is a equipment which was connected in series and adjusting the  loading  voltage  by  feeding  the  voltage  in  system. The  first  installation  was  in 1996.
Marefatjou, Haniyeh, Sarvi, Mohammad
core   +2 more sources

Representation of Arctic Winter Atmospheric Boundary Layer Stability Over Sea Ice in CMIP6 Models

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 11, 16 June 2025.
Abstract The Arctic winter atmospheric boundary layer often features strong and persistent low‐level stability (LLS), which arises from longwave radiative cooling of the surface during the polar night. This stable stratification results in a positive lapse rate feedback, which is a major contributor to Arctic amplification.
Alistair Duffey   +6 more
wiley   +1 more source

Influence of DVR on Adjacent Load and Its Compensation Strategy Design Based on Externality Theory

open access: yesEnergies, 2019
Dynamic voltage restorer (DVR) is a compensation device that can effectively improve power quality, and it is widely used to compensate the voltage sag on sensitive loads.
Zhaobin Du   +5 more
doaj   +1 more source

Examining the association between synaptic density and neurofibrillary tau among cognitively impaired and unimpaired older adults with and without Alzheimer's disease pathology

open access: yesAlzheimer's &Dementia, Volume 21, Issue 6, June 2025.
Abstract INTRODUCTION Synapse loss is a key driver of cognitive decline in Alzheimer's disease (AD), yet its direct relationship with neurofibrillary tau tangle (NFT) burden remains unclear. This study leveraged positron emission tomography (PET) imaging to investigate the link between NFT accumulation and synaptic density in older adults with and ...
Alexandra H. DiFilippo   +18 more
wiley   +1 more source

Continuous biodiesel process using ultrasonic in-line reactor for Jatropha Curcas Oil (JCO) [PDF]

open access: yes, 2017
Biodiesel is an alternative fuel for replacing diesel fuel in compression ignition engines. Due to the complexity of the diesel fuel production and exhaust emissions from petroleum-fuelled engines will give negative impact to the environment.
Mohd Yusoff, Nurrul Rahmah
core  

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