ABSTRACT We consider the synchrotron emission from electrons out in Galactic halo bubble region where Fermi structures reside. Utilizing a simple analytical expression for non-thermal electron distribution and toy magnetic field model, we simulate polarized maps at frequency of 30 GHz. Comparing these with observational data, obtain constraints on parameters our model. this parameter value rang...

BACKGROUND Improved understanding of the mechanisms underlying infarct border zone electrogram fractionation may be helpful to identify arrhythmogenic regions in the postinfarction heart. We describe the generation of electrogram fractionation from changes in activation wavefront curvature in experimental canine infarction. METHODS AND RESULTS A model was developed to estimate the extracellul...

There is no generally accepted explanation of the mainly positive initial deflections seen in the right prxecordial electrocardiogram in right ventricular hypertrophy. McGregor (1950) found in Fallot's tetralogy that whereas the initial deflections in right precordial leads were of the rsR' form or rsR's, direct leads from the right ventricular epicardium were rS in type. He suggested that thes...

The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had the record span of 241 m (791 ft.), presents a striking paradigm of serviceability loss due to excessive multi-decade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...

1. Single-unit responses to whisker deflections were studied in the rat somatosensory cortex (SI) under urethan anesthesia. 2. Experiments were concerned primarily with cortical layer V neurons, by selecting those units that 1) displayed initially positive biphasic spikes with an amplitude of at least 2 mV, 2) were located between 1,000 and 1,500 pm below the cortical surface of whisker C3 repr...

The segmental prestressed concrete box girder of Koror-Babeldaob (KB) Bridge in Palau, which had a record span of 241 m (791 ft), presents a striking paradigm of serviceability loss because of excessive multidecade deflections. The data required for analysis have recently been released and are here exploited to show how the analysis and design could be improved. Erected segmentally in 1977, thi...

OBJECTIVE To study the morphology of small extracellular potentials localized to the sinoatrial (SA) node and to elucidate its potential usefulness in evaluating SA node dysfunction. METHODS Extracellular potentials were recorded from the endocardial surface of the SA node in isolated right atrial preparations of rabbits through custom-made modified bipolar electrodes with high-gain amplifica...