in this study, generation of the transient evoked ooacoustic emissions in human ear has been simulated using a new electroacoustic model. the method of state variables was adopted to calculate the auditory model, and numerical integration methods have been used to solve differential equations in matlab. simulation results have been compared with the real data. in this study, latency curves, fre...

We have measured the HI power spectrum of the nearly face-on spiral galaxy NGC 1058 from radio-interferometric observations using a visibility based estimator. The power spectrum is well fitted by two different power laws P (U) = AUα, one with α = − 2.5± 0.6 at small length-scales (600 pc to 1.5 kpc) and another with α = − 1.0± 0.2 at large length-scales (1.5 kpc to 10.0 kpc). We interpret this...

The primary focus of this exploration is to test the benefits great circle routes over rhumb line routes. A distinct understanding was achieved using derivation logarithmic spiral arc length and research into Mercator projection. Then an theory through spherical trigonometric formulae application these distance formula. Data coordinates different airport locations collected two distances were c...

background and aims. the imaging techniques commonly used for foreign body detection include plain radiography, xeroradiography, computed tomography (ct) scans, magnetic resonance imaging (mri) and ultrasonography. the aim of the present study was to compare cone-beam computed tomography (cbct) with conventional ct scan in determination of the exact location of a foreign body in the maxillofaci...

the ribs are essential structures of the osseous thorax that provide certain significant information and aid interpretation of radiologic images in daily routine practice. intrathoracic rib is a rare congenital anomaly that is usually discovered incidentally, but may cause in vain interventions in case of being unaware. we herein report an intrathoracic rib in a girl whose chest x-ray was stran...

This paper aims to enrich the teaching of surds. We use explorations with spiral and other geometric patterns, supported by dynamic geometry, to link surds with length through Pythagoras’ theorem, emphasise their relative size and to provide attractive contexts for simple and complex surd calculations. The exact value mode of CAS may support students’ work with surds, allowing them to construct...

Two Japanese persons with consanguinous parents had a motor and sensory neuropathy of the hypertrophic type with excessive myelin outfolding in the myelinated fibers. A morphometric analysis of the biopsied sural nerve was made. Excessive myelin outfolding, segmental demyelination, and remyelination and decrease in the density of both large and small myelinated fibers were evident. Using linear...

This analysis addresses the propagation of spiral edge flames found in von Kármán swirling flows induced in rotating porous-disk burners. In this configuration, a porous disk is spun at a constant angular velocity in an otherwise quiescent oxidizing atmosphere. Gaseous methane is injected through the disk pores and burns in a flat diffusion flame adjacent to the disk. Among other flame patterns...