Results 41 to 50 of about 78,110 (303)

Impact of a Connection Structure of Macro Fiber Composite Patches on Energy Storage in Piezoelectric Energy Harvesting from a Rotating Shaft

open access: yesEnergies, 2022
Energy collection in a capacitor, which was charged by four connection structures of Macro Fiber Composite (MFC) patches, was the subject of laboratory research.
Piotr Micek, Dariusz Grzybek
doaj   +1 more source

Power quality issues of 3MW direct-driven PMSG wind turbine [PDF]

open access: yes, 2015
This paper presents power quality issues of a grid connected wind generation system with a MW-class direct-driven permanent magnet synchronous generator (PMSG).
Ahmed, IA, Taylor, GA, Zobaa, AF
core   +1 more source

Safety of Prescription Nonsteroidal Anti‐inflammatory Drugs in Adults with Inflammatory Bowel Disease: Data from a Large Administrative Claims Cohort

open access: yesArthritis Care &Research, Accepted Article.
Objectives The concern that nonsteroidal anti‐inflammatory drugs (NSAIDs) may precipitate flares of inflammatory bowel disease (IBD) has limited their use in managing musculoskeletal symptoms in this population, but safety data are mixed. Methods This retrospective cohort study included patients with IBD ≥ 18 years of age from Optum's de‐identified ...
Adam S. Mayer   +4 more
wiley   +1 more source

Analysis of a Clapping Vibration Energy Harvesting System in a Rotating Magnetic Field

open access: yesSensors, 2022
This technical note proposes a clapping vibration energy harvesting system (CVEH system) installed in a rotating system. This device includes a rotating wheel, a drive shaft that rotates the wheel, and a double elastic steel sheet fixed on the drive ...
Yi-Ren Wang   +3 more
doaj   +1 more source

Coupling an induction motor type generator to ac power lines [PDF]

open access: yes, 1984
A system for coupling an induction motor type generator to an A.C. power line includes an electronic switch means that is controlled by a control system and is regulated to turn on at a relatively late point in each half cycle of its operation.
Nola, F. J.
core   +1 more source

Elinvar Materials: Recent Progress and Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Advanced Diagnostic Techniques for Earthing Brush Faults Detection in Large Turbine Generators

open access: yesEnergies
Large steam turbine generators are increasingly vulnerable to damage from shaft voltages and bearing currents due to the widespread adoption of modern power electronic excitation systems and more flexible operating regimes.
Katudi Oupa Mailula, Akshay Kumar Saha
doaj   +1 more source

Control-Oriented Model of a Generating Set Comprising a Diesel Engine and a Synchronous Generator [PDF]

open access: yesModeling, Identification and Control, 2015
A generating set (Genset) comprises a prime mover such as a Diesel Engine, and a synchronous generator. The most important controllers of such systems are the speed governor to regulate the engine or shaft speed and the automatic voltage regulator (AVR ...
Mutaz Tuffaha, Jan T. Gravdahl
doaj   +1 more source

Performance Evaluation of Fuel Cell and Microturbine as Distributed Generators in a Microgrid [PDF]

open access: yes, 2009
This paper presents dynamic models of distributed generators (DG) and investigates dynamic behaviour of the DG units within a microgrid system. The DG units include micro turbine, fuel cell and the electronically interfaced sources.
Mohamed , Azah   +2 more
core  

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

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