Results 61 to 70 of about 2,022,343 (338)

Theoretical and practical validation tests for a near-field to far-field transformation algorithm using spherical wave expansion [PDF]

, 2012
The use of spherical wave expansion of the solution of the wave equation to predict Far-Field values from data measured in the Near-Field region is a well known technique, typically used to perform antenna measurements in compact anechoic chambers ...
Azpúrua Auyanet, Marco Aurelio, Del Pino, Paulino, Páez, Eduardo Javier, Regina, Juan Pedro, Sandoval, María Daniela, Tremola, Ciro   +5 more
core  

Nonlinear QED in an ultrastrong rotating electric field: Signatures of the momentum-dependent effective mass

, 2020
The specific features of nonlinear pair production and radiation processes in an ultratsrong rotating electric field are investigated, taking into account that this field models the antinodes of counterpropagating laser beams. It is shown that a particle
Hatsagortsyan, K., Raicher, E.
core   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick, Nomin Enkhtsetseg, Joseph Sadok, Matheus Mochetti, Annabel Sorby Adams, Jennifer Guo, Cristina Trapaga Hacker, Isabella Gomez Hjerthen, Seungwon Lee, Siddharth Satish, Andrew S. Ham, Justin Hill, Denis Balaban, Kevin Kyle, Rebecca L. Gillani, Marcelo Matiello, Aleksandar Videnovic, Eric C. Klawiter, W. Taylor Kimberly, Farrah J. Mateen   +19 more
wiley   +1 more source

Theoretical studies of multi-electrode sensor of components of electric field intensity vector in form of square plate of conductive material [PDF]

Омский научный вестник, 2019
The article examines a multi-element flat sensor of the components of the intensity vector of a low-frequency electric field manufactured using new technologies and capable of being integrated into modern gadgets. The sensor is suitable for measuring
S. V. Biryukov, A. V. Tyukin
doaj   +1 more source

An Electro-Optic Sensor for Measurement of Intensive DC Electric Field

IEEE Photonics Journal, 2022
A lithium niobate (LN) integrated electro-optic (EO) sensor incorporated with a rotating shielding electrode has been designed, fabricated and experimentally demonstrated for measurement of intensive direct current (DC) electric field.
Jiahong Zhang, Fushen Chen
doaj   +1 more source

Measurement of the Permanent Electric Dipole Moment of the $^{129}$Xe Atom

, 2019
We report on a new measurement of the CP-violating permanent Electric Dipole Moment (EDM) of the neutral $^{129}$Xe atom. Our experimental approach is based on the detection of the free precession of co-located nuclear spin-polarized $^3$He and $^{129 ...
Allmendinger, F., Engin, I., Heil, W., Karpuk, S., Krause, H. -J., Niederländer, B., Offenhäusser, A., Repetto, M., Schmidt, U., Zimmer, S.   +9 more
core   +1 more source

Validation of the Pediatric Arthritis Ultrasound Scoring System for the Elbow, Wrist, and Finger Joints in Children With Juvenile Idiopathic Arthritis

Arthritis Care &Research, EarlyView.
Objective We aimed to validate the Pediatric Arthritis Ultrasound Scoring System (PAUSS) for upper extremity joints in children with juvenile idiopathic arthritis (JIA). Methods Children with JIA were evaluated for elbow, wrist, or finger arthritis by clinical examination (CE) and musculoskeletal ultrasound (MSUS) with images scored according to the ...
Patricia Vega‐Fernandez, Pinar Ozge Avar‐Aydin, Kelly Rogers, Daniel J. Lovell, Jennifer Huggins, Alexei Grom, Hermine I. Brunner, Grant S. Schulert, Sheila T. Angeles‐Han, Mekibib Altaye, Amy Cassedy, Arthur B. Meyers, Tracy V. Ting   +12 more
wiley   +1 more source

РОЗРАХУНОК ЕЛЕКТРИЧНИХ ПОЛІВ В ЕЛЕМЕНТАХ КОНСТРУКЦІЇ КОМБІНОВАНОГО ВИСОКОВОЛЬТНОГО ВИМІРЮВАЛЬНОГО ТРАНСФОРМАТОРА СТРУМУ І НАПРУГИ

Elektrotehnìka ta Elektroenergetika, 2007
З використанням програми FEMM виконаний розрахунок електричних полів в ізоляційному проміжку комбінованого елегазового високовольтного вимірювального трансформатора струму і напруги.
D. A. Saveliev, E. V. Boyarintseva
doaj  

Local electric field measurements by optical tweezers

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2011
We report a new technique to measure direction and amplitude of electric fields generated by microelectrodes embedded in polar liquid environment, as often used in microfluidic devices. The method is based on optical tweezers which act as sensitive force transducer while a trapped charged microsphere behaves as a probe.
PESCE, GIUSEPPE, B. Mandracchia, E. Orabona, RUSCIANO, GIULIA, L. De Stefano, SASSO, ANTONIO   +5 more
openaire   +4 more sources

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source