Results 41 to 50 of about 179 (176)
The Journal of Engineering, 2019 DC collection network offers an attractive alternative to AC network for photovoltaic, as it avoids the charging current issues and reduces the size and weight. Variable voltage gain DC/DC converters play an important role in DC collection network.
Jiye Liu +3 more
doaj +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Considerable efforts have been dedicated to developing effective treatments for post‐stroke executive impairment (PSEI), among which repetitive transcranial magnetic stimulation (rTMS) has shown great potential. This study aimed to investigate the therapeutic effects of high‐frequency rTMS on working memory (WM) and response ...
Mengting Lao +6 more
wiley +1 more source
Non-isolated resonant link DC–DC converter for use with GaN devices
The Journal of Engineering, 2019 As new wide band-gap (WBG) devices are developed and improved, new topologies and control schemes are required to take advantage of the ultra-fast switching turn on/off speeds that are now available, without the limitations of switching losses and ...
Maria Orr +2 more
doaj +1 more source
Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi +8 more
wiley +1 more source
State observation control strategy of bidirectional resonant DC/DC converter in building DC system
IET Renewable Power GenerationThis paper proposes a state observation control method for a bidirectional CLLLC resonant converter to solve the problem of output voltage stability of an isolated bidirectional DC–DC converter in building DC power distribution systems.
Guiyu Li +3 more
doaj +1 more source
The Journal of Engineering, 2019 Bidirectional LLC resonant converter has been popular in applications such as electric vehicle, energy storage system and uninterruptible power supply for its good soft-switching characteristics.
Fengyi Zhang +3 more
doaj +1 more source
Arthritis Care &Research, EarlyView.Objective To investigate the association between rheumatoid arthritis (RA) and coronary artery calcium (CAC) prevalence, incidence, and progression over four years in adults without prior cardiovascular disease. Methods A case‐cohort study within the Brazilian Longitudinal Study of Adult Health (ELSA‐Brasil) included 585 participants (86 patients with ...
Patrícia Fonseca Estrada +7 more
wiley +1 more source
IET Power ElectronicsA multilevel DC–DC converter is a promising solution to save cost and promote the power density of DC solid‐state transformers. Among the multilevel DC–DC topologies, the stacked flying capacitor half‐bridge five‐level LLC resonant converter can ...
Daoxin Tong +5 more
doaj +1 more source
Architecture of urban rail transit power supply based on PET braking energy feedback
The Journal of Engineering, 2019 In recent years, the urban rail transit has a great development in many cities of China. It is important to keep the DC transit grid strong and the power transmitted/power transmission high quality.
Hao Liu, Zedong Zheng, Zheng Xu
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Advanced Engineering Materials, EarlyView.Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi +2 more
wiley +1 more source