Results 81 to 90 of about 1,125,521 (310)

Impact of Multiple Grid-Connected Solar PV Inverters on Harmonics in the High-Frequency Range

Energies
In recent years, integration of solar photovoltaic (PV) systems into distribution networks has been increasing rapidly, as it has become the most promising renewable energy source (RES) in the transition of power generation from centralised to ...
Kasun Peiris, Sean Elphick, Jason David, Duane Robinson   +3 more
doaj   +1 more source

On harmonic and asymptotically harmonic homogeneous spaces [PDF]

GAFA Geometric And Functional Analysis, 2006
We classify noncompact homogeneous spaces which are Einstein and asymptotically harmonic. This completes the classification of Riemannian harmonic spaces in the homogeneous case: Any simply connected homogeneous harmonic space is flat, or rank-one symmetric, or a nonsymmetric Damek-Ricci space. Independently, Y.
openaire   +3 more sources

Moyamoya Disease and the Risk of Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives Moyamoya disease (MMD) is a rare cerebrovascular disorder characterized by the progressive narrowing of arteries at the base of the brain, forming abnormal collateral vascular networks. While vascular parkinsonism is noted in MMD, its link to Parkinson's disease (PD) has not been explored.
Dallah Yoo, Jeong‐Yong Shin, Rugyeom Lee, Jiwon Cheon, Ji Hun Kim, Doeun Kim, Jae‐Kyung Won, In‐Hwan Oh, Yunjong Lee, Tae‐Beom Ahn   +9 more
wiley   +1 more source

Interleukin‐6 as a Key Biomarker in Facioscapulohumeral Dystrophy: Evidence From Longitudinal Analyses

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Facioscapulohumeral muscular dystrophy type 1 (FSHD1) is a progressive neuromuscular disorder with no approved treatments. Identifying reliable biomarkers is critical to monitor disease severity, activity, and progression. Interleukin‐6 (IL‐6) has been proposed as a candidate biomarker, but longitudinal validation is limited ...
Jonathan Pini, Emanuela Martinuzzi, Sandra Dhifallah, Abderhmane Slioui, Angela Puma, Luisa Villa, Michele Cavalli, Andra Ezaru, Jérémy Garcia, Manuela Gambella, Federico Torre, Luca Jacopo Pavan, Nicolas Glaichenhaus, Sabrina Sacconi   +13 more
wiley   +1 more source

Design of the RLC Filter in Cascaded Inverter System

Kongzhi Yu Xinxi Jishu, 2013
The cascaded inverter is widely used in high-voltage large-capacity system because of the sine output and low cost. However, in some special conditions, the harmonics component of output voltage will intensify heating of the reactor and motor windings ...
WANG Shiping, HUANG Huan, QIN Canhua, LIANG Wenchao, HE Bojun   +4 more
doaj  

Harmonic sections and equivariant harmonic maps

Manuscripta Mathematica, 1997
Let \(\pi:N\to M\) be a smooth submersion of Riemannian manifolds. A smooth right inverse \(\sigma : M\to N\) of \(\pi\) is said to be a harmonic section if \(\sigma\) is a critical point of the vertical energy functional \[ E^v(\sigma)={{1}\over{2}}\int | d^v\sigma| ^2, \] where \(d^v\sigma\) denotes the vertical component relative to the orthogonal ...
openaire   +2 more sources

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez, Corinne Pettigrew, Yuxin Zhu, Claire Anderson, Guray Erus, Christos Davatzikos, Michael Miller, Abhay Moghekar, Sungtaek Oh, Chan‐Hyun Na, Marilyn Albert, Paul Worley, Anja Soldan   +12 more
wiley   +1 more source

Design of a High Performance Phase-Locked Loop With DC Offset Rejection Capability Under Adverse Grid Condition

IEEE Access, 2020
In the new energy grid-connected power generation system, accurately extracting the grid synchronization signals such as the frequency, phase and amplitude of the grid voltage is the basis for effective control.
Nanmu Hui, Yingying Feng, Xiaowei Han
doaj   +1 more source

Plasma Proteomic Signatures for Alzheimer's Disease: Comparable Accuracy to ATN Biomarkers and Cross‐Platform Validation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background There is growing recognition of the potential of plasma proteomics for Alzheimer's Disease (AD) risk assessment and disease characterization. However, differences between proteomics platforms introduce uncertainties regarding cross‐platform applicability.
Manyue Hu, Oliver Robinson, Christina M. Lill, Anna Matton, Raquel Puerta, Pilar Sanz, Merce Boada, Agustín Ruiz, Lefkos Middleton, for the Alzheimer's Disease Neuroimaging Initiative   +9 more
wiley   +1 more source

Fracture Analysis of Toughness Fracture Failure on Flexspline of Harmonic Reducers During the Service [PDF]

Teshugang
The reasons of the fatigue failure of flexspline are analyzed by observation analysis， observation and hardness determination of fracture morphology of microstructure.
Mu　Xiaobiao, Zhang　Yongqi, Gao　Minyan, Yang　Guoqiang, Zhang　Chaolei
doaj   +1 more source