Experimental Tests and Numerical Analysis of Aerodynamic Properties of the Composite-Made Jet-Propelled Aerial Target.

The design of an aircraft's internal structure, and therefore the appropriate choice of material type, is a direct function of the performed tasks and the magnitude and type of the acting loads. The design of a durable aircraft structure with appropriate stiffness and lightness requires knowledge of the loads that will be applied to the structure. Therefore, this paper presents the results of an aerodynamic experimental test and numerical analysis of a newly designed jet-propelled aerial target.

Effects of impulse noise on transiently evoked otoacoustic emission in soldiers.

The aim of the study was to assess the effects of exposure to impulse noise on TEOAE, as compared to PTA. The study comprised 92 soldiers, subjected to impulse noise during military service. The control group consisted of secondary school students, not exposed to noise.

[Rhabdomyosarcoma embryonale of the middle ear at 55-year-old women].

The study presents extremely rare of the middle ear rhabdomyosarcoma embryonale at 55-year women. Authors showed untypical clinical process and own suspect of neoplasm illness. In difficult cases of the middle ear chronic granulomatosis, classical HE histological method maybe not enough and should be extended as an immunohistochemical examination.

[Influence of steroid therapy local injection of steroidal in the region of the stylomastoid foramen and physiotherapy on the recovery of stapedial reflex in patients with facial nerve paralysis].

There are much more publications which informates about positive effects of advisability propose steroid's cure in patients with facial nerve palsy. The aim of the studies was to evaluate the influence of steroidal and physical treatment on the recovery of stapedial reflex and of functions of the damaged nerve. The studies were performed on 37 patients with palsy of facial nerve.

[Analysis of vascular vertigo due to cervical spondylosis and vertebro-basilar insufficiency based on sex and age in clinical materials].

According to examination of 97 patients with vascular vertigo the dependence on vertigo to vertebral spondylosis and insufficiency vertebro-basilar artery was showed. Vertebral degeneration was noticed in 70.1%, basilar artery insufficiency in 42.

Evaluation of Transient and Distortion Product Otoacoustic Emissions before and after shooting practice.

Firearms are a common source of impulse noise that may potentially damage a hearing organ. It is not easy to predict soldiers' personal susceptibility to noise exposure. The purpose of this study was to evaluate of the transient evoked otoacoustic emission (TEOAE) and distortion-product otoacoustic emission (DPOAE) before and after shooting and compare it with conventional pure tone audiometry.

[Assessment and analysis of the acoustic environment of soldiers exposed to impulse noise].

The aim of the study was to assess the acoustic environment of soldiers attending a one year basic military service. The study material comprised 13 types of weapons used by this group of soldiers. During the target practice, the following parameters were measured separately for the right ear and the left ear: equivalent sound pressure level A (LA eq, Te); maximum sound pressure level A (LA F max) and peak sound pressure level C (LC peak).

[Personal long-term reproducibility of the TEOAE time-frequency distributions].

The TEOAE signal is relatively short and content changes in time. Due to the fact that signal is very short (20 ms) a special approach must be applied for the analysis of this nonstationarity. Usually the spectral estimation in TEOAE is based on procedures directly employing the fast Fourier transform (FFT).

[The value of exploratory anterior tympanotomy in differentiating causes of conductive hearing loss and assessment of their treatment results].

The aim of examination was value of exploratory anterior tympanotomy in differentiation causes of conductives hearing loss and assessment of results treatment. Materials of examinations determined 34 patients aged 15-66 years, treated in 1995-2000 years, who qualified to exploratory anterior tympanotomy in aim decision of cause of conductives hearing loss. Among of examined were 14 patients with suspicion of otosclerosis (41.