the latest american heart association (aha) statement for preventing infectious endocarditis, has not recommended prophylactic antibiotic therapy prior to fiberoptic bronchoscopy (fb) except for patients with preexisting predisposing cardiac conditions. our aim was to determine the incidence of bacteriemia and fever following fb in our experience and compare with those which have been mentioned...

BACKGROUND Contrast enhanced magnetic resonance angiography (MRA) is generally performed during a long breath-hold (BH), limiting its utility in infants and small children. This study proposes a free-breathing (FB) time resolved MRA (TRA) technique for use in pediatric and adult congenital heart disease (CHD). METHODS A TRA sequence was developed by combining spiral trajectories with sensitiv...

Introduction: Foreign-body (FB) aspiration in the airway of children is a life-threatening clinical situation responsible for many deaths each year. The aim of this study was to evaluate the different clinical presentations, methods of diagnosis, types and complications of FB inhalation in the pediatric age group.   Materials and Methods: The study included patients who presented with a def...

We examine how passive and active observations are useful to evaluate an air quality 9 analysis. By leaving out observations from the analysis, we form passive observations, and the 10 observations used in the analysis are called active observations. We evaluated the surface air quality 11 analysis of O3 and PM2.5 against passive and active observations using standard model verification 12 metr...

We investigate dynamic nuclear polarization in quantum point contacts (QPCs) in the integer and fractional quantum Hall regimes. Following the application of a dc bias, fractional plateaus in the QPC shift symmetrically about half filling of the lowest Landau level, ν=1/2, suggesting an interpretation in terms of composite fermions. Polarizing and detecting at different filling factors indicate...

The dephasing rate of an electron level in a quantum dot, placed next to a fluctuating edge current in the fractional quantum Hall effect, is considered. Using perturbation theory, we first show that this rate has an anomalous dependence on the bias voltage applied to the neighboring quantum point contact, because of the Luttinger liquid physics which describes the fractional Hall fluid. Next, ...

We propose an estimator for the α fractional derivative of a distribution function. Our estimator, based on finite differences of the empirical df generalizes the estimator proposed by Maltz (1974) for the nonnegative real case. The asymptotic bias, variance and the consistency of the estimator are studied. Finally, the optimal choice for the ”smoothing parameter” proves that even in the fracti...

We study the fractional quantum Hall effect in a bilayer with charge-distribution imbalance induced, for instance, by a bias gate voltage. The bilayer can either be intrinsic or it can be formed spontaneously in wide quantum wells, due to the Coulomb repulsion between electrons. We focus on fractional quantum Hall effect in asymmetric bilayer systems at filling factor ν = 4/11 and show that an ...

PURPOSE To evaluate the use of 3D optical surface imaging as a surrogate for respiratory gated deep-inspiration breath-hold (DIBH) for left breast irradiation. MATERIAL AND METHODS Patients with left-sided breast cancer treated with lumpectomy or mastectomy were selected as candidates for DIBH treatment for their external beam radiation therapy. Treatment plans were created on both free breat...