Purpose Although extensive clinical research has been performed on structural analysis of sickle cell (SC) retinopathy, functional aspects have been poorly investigated. Our purpose was to report full-field electroretinogram (ffERG) findings in patients with early SC retinopathy according to the following hemoglobin types: HbSS or HbSC (homozygous or heterozygous mutations, respectively). Met...

The CCC method was developed initially [1,2] to describe scattering of electrons from one-electron targets. The method made use of Laguerre basis states that are are L functions to discretize the target continuum. The method provided convergent amplitudes for scattering to low–lying discrete states and total–ionization cross– sections. The theory is fully symmetrized since it is based on a symm...

Numerous studies have shown that evaluation of evoked potentials (EP) is an excellent estimation tool for a cognitive function. During daily practices footballers are exposed to headers that can leave mild head traumas. In this study, young footballers were examined, while the control group included their coevals who don't practice contact sports. Results of the study have shown that footballer...

One-dimensional quantum scattering from a local potential barrier is considered. Analytical properties of the scattering amplitudes have been investigated by means of the integral equations equivalent to the Schrodinger equations. The transition and re ection amplitudes are expressed in terms of two complex functions of the incident energy, which are similar to the Jost function in the partial...

Aim: We aimed to detect the utility of head up tilt test with video electroencephalography (EEG) in children with unexplained, recurrent loss of consciousness episodes. Method: Video EEG were recorded during the head up tilt test. The test was terminated if syncope or presyncope with 30% decrease in heart rate and/or systolic blood pressure occurred. Regarding encephalography, average amplitude...

Non-leptonic hyperon weak decays are investigated in the SU(3) Skyrme model. We use a collective coordinate scheme, following the approach in which the symmetry breaking terms in the strong effective action are diagonalized exactly. To describe the weak interactions we use an octet dominated weak effective lagrangian that leads to a good description of the known 2π and 3π kaon decays. We show t...

PURPOSE To determine whether the photopic negative response (PhNR) of the electroretinogram (ERG) is reduced in patients with primary open angle glaucoma (POAG). METHODS ERGs were recorded with DTL electrodes from 62 normal subjects (16 to 82 years), 18 POAG patients (47 to 83 years) and 7 POAG suspects (46 to 73 years) to brief flashes (<6 ms), and also in a few subjects to long (200 ms) red...

We investigate the rare production of pair $S-$ and $P-$ wave $B_c$-meson in Higgs boson decay perturbative Standard Model relativistic quark model. Relativistic amplitudes widths are constructed with account relative motion heavy quarks forming $B_c$ mesons. When constructing amplitudes, method projection operators on $P-$wave states is used. corrections expressed terms special parameters calc...

speech delay with an unknown cause is a problem among children. this diagnosis is the last differential diagnosis after observing normal findings in routine hearing tests. the present study was undertaken to determine whether auditory brainstem responses to click stimuli are different between normally developing children and children suffering from delayed speech with unknown causes. in this cr...