Results 111 to 120 of about 31,354 (292)

Fault-Tolerant Operation of Wound Field Synchronous Machine Using Coil Switching

open access: yesIEEE Access, 2019
This paper proposes a fault tolerant operation of a wound field synchronous machine (WFSM) under the loss of excitation (LOE) fault in the rotor field winding. A two-mode field excitation scheme is presented, where the rotor of the WFSM was modified, and
Muhammad Ayub   +3 more
doaj   +1 more source

The NASA Lewis large wind turbine program [PDF]

open access: yes
The program is directed toward development of the technology for safe, reliable, environmentally acceptable large wind turbines that have the potential to generate a significant amount of electricity at costs competitive with conventional electric ...
Baldwin, D. H., Thomas, R. L.
core   +1 more source

The IceShark, an effective method for sampling plankton under sea ice

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Seasonal sea ice plays a crucial role in shaping coastal ecosystem dynamics throughout the circumpolar region. Of particular interest to oceanographers is the ice‐ocean interface which functions as a multidimensional habitat, supporting both sympagic algae and pelagic phytoplankton in the under‐ice surface waters.
Eleanor A. Barry   +4 more
wiley   +1 more source

Current Signature Analysis as Diagnosis Media for Incipient Fault Detection

open access: yesAdvances in Electrical and Computer Engineering, 2007
This paper focuses on the experimental investigation for incipient fault detection and fault detection methods existing in the literature, using Wound Rotor Induction Machine (WRIM).
MIHET-POPA, L.
doaj   +1 more source

Experimental investigation of a variable speed constant frequency electric generating system from a utility perspective [PDF]

open access: yes
As efforts are accelerated to improve the overall capability and performance of wind electric systems, increased attention to variable speed configurations has developed. A number of potentially viable configurations have emerged.
Herrera, J. I.   +2 more
core   +1 more source

Primary electric power generation systems for advanced-technology engines [PDF]

open access: yes, 1983
The advantages of the all electric airplane are discussed. In the all electric airplane the generator is the sole source of electric power; it powers the primary and secondary flight controls, the environmentals, and the landing gear. Five candidates for
Cronin, M. J.
core   +1 more source

Enhancing Neural Stem Cell Proliferation Using Polyurethane/CNT Scaffolds Functionalized With Liposomal Hesperidin for Neural Tissue Engineering

open access: yesNano Select, EarlyView.
A multifunctional electrospun scaffold combining polyurethane, carbon nanotubes, and liposomal hesperidin supports neural stem cell survival, adhesion, and expansion. This platform enhances conductivity, mechanical strength, and hydrophilicity while mimicking the native neural environment.
Arman Abroumand Gholami   +8 more
wiley   +1 more source

Exocarpium Citri Grandis-Derived Extracellular Vesicle-Like Particles for Accelerating Wound Healing via Regulating the Protein Expression on the VEGF/AKT Signaling Pathway. [PDF]

open access: yesFood Sci Nutr
Our findings indicate that ECG‐EVLP can effectively promote wound healing and the activation of the VEGF/AKT signaling pathway in vitro and in vivo, coupled with the inhibition of the mitochondrial apoptosis pathway in cells following ECG‐EVLP stimulation might be its underlying mechanism.
Xiong Y   +10 more
europepmc   +2 more sources

Fused Filament Fabrication and Recycling of Bio‐Based Polyamide 11 Reinforced With Recycled Short Carbon Fibers

open access: yesPolymer Composites, EarlyView.
Fused Filament Fabrication and Recycling of Bio‐Based Polyamide 11 Reinforced With Recycled Short Carbon Fibers. Sample preparation, mechanical properties improvement after rCF addition and properties retainment after recycling. ABSTRACT This research investigates the fused filament fabrication (FFF) and recycling of bio‐based polyamide 11 (PA11 ...
Mirko Coser   +2 more
wiley   +1 more source

The treatment of moving problem for constant-frequency double-rotor generator in finite element analysis

open access: yesAdvances in Mechanical Engineering, 2015
The constant-frequency double-rotor generator has the potential to be used in the marine energy conversions, such as tides and marine current power generation system due to the advantages.
Yongjiang Jiang   +2 more
doaj   +1 more source

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