The interaction of a fluxon with a finite-size inhomogeneity in a long Josephson junction is studied within the framework of the perturbation theory for solitons. The threshold values of the bias current density either for capture of the fluxon or for its escape on the inhomogeneity are calculated. Induced by the resonant fluxon emission hystereses on the first zero-field step of the Josephson ...

We consider a Josephson junction system installed with a finite length inhomogeneity, either of microresistor or of microresonator type. The system can be modelled by a sine-Gordon equation with a piecewise-constant function to represent the varying Josephson tunneling critical current. The existence of pinned fluxons depends on the length of the inhomogeneity, the variation in the Josephson tu...

Introduction Although the first-pass myocardial perfusion MRI has proven its effectiveness in the diagnosis of ischemic heart disease, this technique is still not routinely used. Certain technical difficulties prevent perfusion MRI from being added into the clinical workflow, including complex cardiac motion, limited imaging time, and B1-field inhomogeneity caused by non-uniform characteristics...

Abstract Analysis of interstellar absorption lines observed in high-resolution Hubble Space Telescope spectra nearby stars provides temperatures, turbulent velocities, and kinetic properties warm clouds. A new analysis 97 interstellar-velocity components reveals a wide range temperatures velocities within the Local Interstellar Cloud (LIC) Cluster Clouds (CLIC). These variations appear to be ra...

Traumatic aortic rupture (TAR) is one of the most significant causes of motor-vehicle fatalities with the majority of injuries occurring in the peri-isthmus region. Despite the fact that TAR accounts for 20% of the total automobile fatalities, there is uncertainty regarding its etiology and underlying mechanisms. Finite element (FE) models are essential for calculating the strains and stresses ...

The effects of increased gravity in the head-to-foot direction (+G(z)) and pressurization of an anti-G suit (AGS) on total and intraregional intra-acinar ventilation inhomogeneity were explored in 10 healthy male subjects. They performed vital capacity (VC) single-breath washin/washouts of SF(6) and He in +1, +2, or +3 G(z) in a human centrifuge, with an AGS pressurized to 0, 6, or 12 kPa. The ...

PURPOSE Ventilatory inhomogeneity indexes in critically ill mechanically ventilated patients could be of importance to optimize ventilator settings in order to reduce additional lung injury. The present study compared six inhomogeneity indexes calculated from the oxygen washout curves provided by the rapid oxygen sensor of the LUFU end-expiratory lung volume measurement system. METHODS Inhomo...

While cardiovascular disease is the leading cause of death in most developed countries, SPAMM-MRI can reduce morbidity by facilitating patient diagnosis. An image analysis method with a high degree of automation is essential for clinical adoption of SPAMM-MRI. The degree of this automation is dependent on the amount of thermal noise and surface coil-induced intensity inhomogeneity that can be r...