Results 31 to 40 of about 639,808 (203)

Harmonic response analysis of symmetric laminated composite beams with different boundary conditions

Science and Engineering of Composite Materials, 2014
This study deals with the determination of the harmonic response of symmetric laminated composite beams by the finite element method. The structural stiffness of the composite beam is determined by the classical laminated plate theory. Four different ply
Kıral Zeki
doaj   +1 more source

Investigation of the Influence of Splitter Blades on the Resonance Conditions of Impellers

Applied Sciences, 2019
The conventional resonance conditions are derived based on the conventionally designed impellers without splitter blades. This paper proposes the resonance conditions for impellers under the excitation from the impeller−diffuser interaction with ...
Kaicheng Liu, Cheng Yan
doaj   +1 more source

Research of three harmonic excitation synchronous motor speed control system

AIP Advances
This paper presents a speed control system based on the third harmonic excitation synchronous motor. Compared with harmonic excitation by adding harmonic windings in the electric excitation motor, the structure is simpler, with lower hardware costs and ...
Xiaoou Fan, Shaohua Ma, Dezhi Chen, Chaoqun Liu   +3 more
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Operational modal analysis with non stationnary inputs [PDF]

, 2013
Operational modal analysis (OMA) techniques enable the use of in-situ and uncontrolled vibrations to be used to lead modal analysis of structures. In reality operational vibrations are a combination of numerous excitations sources that are much more ...
Michon, Guilhem, Morlier, Joseph, Coulange, Baptiste, Gouache, Thibault   +3 more
core  

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Harmonic-Excited Closed-Slot Brushless Wound Rotor Synchronous Machine With Reduced Torque Ripple

IEEE Access
This paper presents a brushless wound rotor synchronous machine (WRSM) employing a self-excitation method based on harmonic field interaction and a closed-slot stator design for torque ripple reduction.
Zuhair Abbas, Ghulam Jawad Sirewal, Jin Hur   +2 more
doaj   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Harmonic holographic microscopy with circularly polarized excitation [PDF]

, 2009
We have developed a luminescent marker using the second harmonic generation (SHG) from noncentrosymmetric BaTiO3 nanocrystals. These nanoparticles are attractive due to their stable, non-saturating and coherent signal with a femtosecond-scale response ...
Hsieh, C.-L., Hsieh, Chia-Lung, Psaltis, D., Chia-Lung Hsieh, Pu, Y., Psaltis, Demetri, Grange, R., Rachel Grange, Demetri Psaltis, Ye Pu, Pu, Ye, Grange, Rachel   +11 more
core   +1 more source

Comparative Analysis of Shaft Voltage Harmonic Characteristics in Large-Scale Generators: OEM and Excitation System Comparisons

Energies
This study presents a comparative harmonic analysis of shaft voltage waveforms in large-scale steam turbine generators, emphasizing the influence of excitation system topology and generator design on spectral behavior.
Katudi Oupa Mailula, Akshay Kumar Saha
doaj   +1 more source