Results 31 to 40 of about 213,615 (311)

RF photonic delay lines using space-division multiplexing

open access: yes, 2018
We review our last work on dispersion-engineered heterogeneous multicore fiber links designed to act as tunable true time delay lines for radiofrequency signals.
Garcia, Sergi, Gasulla, Ivana
core   +1 more source

CALCULATION OF TEMPERATURE DISTRIBUTION IN HEAVY OIL RESERVOIRS BY ELECTROMAGNETIC HEATING

open access: yesCT&F Ciencia, Tecnología & Futuro, 2023
The introduction of heat into a reservoir has proven to be an effective way to reduce the viscosity of heavy oils by increasing the temperature in the formation.
Herling Gonzalez Alvarez   +3 more
doaj   +1 more source

Suppression of electron spin decoherence in Rabi oscillations induced by an inhomogeneous microwave field

open access: yes, 2018
The decay of Rabi oscillations provides direct information about coherence of electron spins. When observed in EPR experiments, it is often shortened by spatial inhomogeneity of the microwave field amplitude in a bulk sample.
Fedaruk, R.   +2 more
core   +1 more source

Radiofrequency ablation devices [PDF]

open access: yesVideoGIE, 2017
The use of RFA as a treatment modality in gastrointestinal endoscopy is expanding. RFA is frequently used in combination with focal EMR for the treatment of dysplastic BE and as standalone therapy for flat BE. Its efficacy in the treatment of esophageal squamous dysplasia appears promising.
Udayakumar Navaneethan, MD   +9 more
openaire   +3 more sources

Catheter ablation of atrial fibrillation : radiofrequency catheter ablation for redo procedures after cryoablation [PDF]

open access: yes, 2013
Aim: To evaluate the effectiveness of two different strategies using radiofrequency catheter ablation for redo procedures after cryoablation of atrial fibrillation. Methods: Thirty patients (paroxysmal atrial fibrillation: 22 patients, persistent atrial
Gramley, Felix, Kettering, Klaus
core   +1 more source

About the dynamics and thermodynamics of trapped ions

open access: yes, 2009
This tutorial introduces the dynamics of charged particles in a radiofrequency trap in a very general manner to point out the differences between the dynamics in a quadrupole and in a multipole trap.
C Champenois   +8 more
core   +4 more sources

Functional and Structural Evidence of Neurofluid Circuit Aberrations in Huntington Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Disrupted neurofluid regulation may contribute to neurodegeneration in Huntington disease (HD). Because neurofluid pathways influence waste clearance, inflammation, and the distribution of central nervous system (CNS)–delivered therapeutics, understanding their dysfunction is increasingly important as targeted treatments emerge.
Kilian Hett   +8 more
wiley   +1 more source

Performance Investigations of Quasi-Yagi Loop and Dipole Antennas on Silicon Substrate for 94 GHz Applications

open access: yesInternational Journal of Antennas and Propagation, 2014
This paper introduces the design and implementation of two high gain Quasi-Yagi printed antennas developed on silicon substrate for 94 GHz imaging applications.
Osama M. Haraz   +4 more
doaj   +1 more source

Ultrasonic characterization of the pulmonary venous wall: echographic and histological correlation [PDF]

open access: yes, 2002
Background: Pulmonary vein isolation with radiofrequency catheter ablation techniques is used to prevent recurrences of human atrial fibrillation. Visualization of the architecture at the venoatrial junction could be crucial for these ablative techniques.
Anderson, R.H.   +7 more
core   +1 more source

Clinical Outcomes of SEEG‐Guided Radiofrequency Thermocoagulation in Children With Focal Drug‐Resistant Epilepsy: A Multicenter Real‐World Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Stereoelectroencephalography‐guided radiofrequency thermocoagulation (SEEG‐RFTC) has emerged as a safe and effective minimally invasive treatment for children with drug‐resistant focal epilepsy. Although evidence from real‐world studies remains limited, numerous pediatric cases have demonstrated promising outcomes. This retrospective
Weitao Chen   +7 more
wiley   +1 more source

Home - About - Disclaimer - Privacy