Results 211 to 220 of about 66,879 (258)
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Arrays of resistively shunted Josephson junctions in magnetic fields
Physical Review B, 1993A two-dimensional array of resistively shunted Josephson junctions in the presence of both applied external currents and transverse magnetic fields is studied both analytically and numerically. The dynamics of the system is specified by a set of Langevin equations, and leads to a stationary state, which can be described by an effective Hamiltonian. The
, Kim, , Choi
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Dynamic telephone receiver with magnetic shunt
The Journal of the Acoustical Society of America, 1989A dynamic telephone receiver which is capable of being used in association with hearing aids, has a flux coil positioned around the pole piece and magnet assembly. To minimize the strong magnetic leakage field radiated from the air gap, which can attract pins, paper clips and other ferrous metals a shunt can be provided at the face of the receiver ...
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Magnetic resonance angiography of dialysis access shunts: Initial results
Magnetic Resonance Imaging, 1996The objective of this study was the feasibility of imaging hemodialysis fistulae with magnetic resonance angiography (MRA). MRA was performed in eight Brescia-Cimino fistulae and seven goretex loop grafts, five of which were stenosed and 10 normal. We compared two MRA methods: a 2D magnetization prepared turbo field echo (MPTFE) and a 3D phase contrast
G J, Waldman +5 more
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Tunable electromagnetic shunt damper with opposing magnets configuration
Smart Materials and Structures, 2020Abstract Electromagnetic damper (EMD) has been widely studied in the control of vibrating structures. It has higher tunability when compared with a viscous damper and lower cost when compared with a magnetorheological damper. However, its use is limited mainly due to the high ratios of system mass/volume to the damping force produced. In
Ruqi Sun, Waion Wong, Li Cheng
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Shunt-coupled magnetic-amplifier circuits
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1959A recent study of magnetic-amplifier theory based on block-diagram techniques1 suggested to this author that one potentially useful basic technique for extracting the output information from the simple self-saturating magnetic amplifier had been seriously neglected in the past. Although it is a well-recognized fact that the output information in a self-
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Evaluation of intracardiac shunts with cardiac magnetic resonance
Current Cardiology Reports, 2005Intracardiac shunts including atrial septal defect, ventricular septal defect, endocardial cushion defects, and surgical baffles may be identified, localized, and quantified using cardiac MRI methods. Both dark-blood and bright-blood techniques are helpful to identify anatomy.
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Magnetoresistive read transducer having hard magnetic shunt bias
The Journal of the Acoustical Society of America, 1992A magnetoresistive (MR) read transducer comprising an MR layer (11) having passive end regions (14) separated by a central active region (12). A longitudinal bias is produced by a thin film (16) of hard magnetic material in the end regions only, and the thin film of hard magnetic material is spaced from the MR layer by a nonmagnetic spacer layer (18 ...
Mohamad T. Krounbi +2 more
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Magnetic dynamic hysteresis of a resistively shunted Josephson-junction array
Physical Review B, 1994The magnetization curves of a slablike uniform Josephson-junction array with resistive shunts are calculated from the dc and ac Josephson equations and the gauge-invariant phase difference. The parameters are chosen in accord with actual values for high-Tc superconductors (HTSC's).
, Chen, , Sanchez, , Hernando
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Magnetic resonance imaging of macroscopic intrahepatic portal-hepatic venous shunts
Gastrointestinal Radiology, 1991Direct communication between portal branches and the hepatic vein [macroscopic intra-hepatic portal-hepatic venous shunt (IPHVS)] is a rare entity. We have recently studied five patients with this condition. Magnetic resonance imaging (MRI) clearly demonstrated in each case the portal-hepatic venous shunt due to "flow void." Multiple diffuse shunts ...
T, Araki +8 more
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Congenital intrahepatic portosystemic venous shunt: sonographic and magnetic resonance imaging
European Radiology, 1996We report an intrahepatic portosystemic venous shunt (IPVS) detected by ultrasound in an asymptomatic newborn. The lesion, which was further documented using color Doppler ultrasound and magnetic resonance imaging (MRI), had almost totally disappeared 6 months later without any treatment. Intrahepatic portosystemic venous shunts (IPVS) are uncommon and
G, Santamaría +5 more
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