Results 61 to 70 of about 127,907 (304)

Frequency and phase modulation performance of an injection-locked CW magnetron. [PDF]

, 2006
It is demonstrated that the output of a 2.45-GHz magnetron operated as a current-controlled oscillator through its pushing characteristic can lock to injection signals in times of the order of 100-500 ns depending on injection power, magnetron heater ...
Carter, Richard G., Tahir, I., Dexter, A.   +2 more
core  

Method for design of two-level system of active shielding of power frequency magnetic field based on a quasi-static model

Electrical engineering & Electromechanics
Aim. Development of method for design a two-level active shielding system for an industrial frequency magnetic field based on a quasi-static model of a magnetic field generated by power line wires and compensating windings of an active shielding system ...
B. I. Kuznetsov, A. S. Kutsenko, T. B. Nikitina, I. V. Bovdui, V. V. Kolomiets, B. B. Kobylianskyi   +5 more
doaj   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Cognitive and Neuroimaging Divergence Between Juvenile and Adult FUS Amyotrophic Lateral Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by progressive motor neuron degeneration. Fused in sarcoma (FUS)‐associated juvenile ALS (jALS) represents a distinct and aggressive subgroup with rapid deterioration and poor prognosis.
Alexandra V. Jürs, Marcel Naumann, Annaliis Lehto, Hanna Schön, Jens Kurth, Johannes Prudlo, Andreas Hermann, Elisabeth Kasper   +7 more
wiley   +1 more source

Magnetic field analysis for low frequency electrodynamic wireless power transmission

, 2023
International audienceElectrodynamic wireless power transfer systems consist in sending power to an electrodynamical receiver with a low frequency magnetic field.
Morel, Adrien, Dosol, Michael, de Sainte Maresville, Guillaume   +2 more
core  

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
Nabil K. El Ayoubi, Sola Al Ghazal, Salem Hannoun, Medhat A. Siddik, Nour M. Najjar, Jim Dagher, Joseph Abboud, Myriam G. Semaan, Samia J. Khoury   +8 more
wiley   +1 more source

Effects of Add‐On Icosapent Ethyl With Standard Treatment on Functional Outcomes and Inflammatory Biomarkers in Acute Ischemic Stroke: A Blinded Randomized Controlled Trial

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ischemic stroke, a major cause of mortality and long‐term disability, results from the abrupt cessation of cerebral blood flow due to vascular occlusion or rupture. Icosapent Ethyl (EPA‐EE), approved for hypertriglyceridemia, has anti‐inflammatory and antithrombotic properties that may lessen ischemic damage.
Mitra Mahmoudi Meymand, Seyed Hossein Aghamiri, Saeed Mohmammad Soleymani, Shadiyeh Bararpoor Poshkohi, Samaneh Masoudi, Hadi Esmaily   +5 more
wiley   +1 more source

Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic [PDF]

, 2007
On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at ...
Kosch, Mike J., Ashrafi, M., Isham, B., Kaila, K.   +3 more
core  

Near-field Image Transfer by Magneto-Inductive Arrays: a Modal Perspective [PDF]

, 2011
20.05.13 KB. Ok to add accepted version to Spiral.A simple model of near-field pixel-to-pixel image transfer using magneto-inductive arrays is presented.
RRA, Syms, R.R.A. Syms, Shamonina, E, Solymar, L, E. Shamonina, L. Solymar   +5 more
core   +1 more source

Magnetic fields and uniformity of radio frequency power deposition in low-frequency inductively coupled plasmas with crossed internal oscillating currents

, 2004
Radial and axial distributions of magnetic fields in a low-frequency (similar to460 kHz) inductively coupled plasma source with two internal crossed planar rf current sheets are reported.
Ostrikov, K., S. V. Vladimirov, Tsakadze, E.L., Xu, S., S. Xu, Tsakadze, Erekle, Ostrikov, K.N., Vladimirov, S.V., K. Ostrikov, E. L. Tsakadze, Z. L. Tsakadze, Tsakadze, Z.L.   +11 more
core   +1 more source