background and aim: digits are suitable materials for hearing assessment of wide range of patients including children and adults with various language abilities. single monosyllabic 1-10 digits in triplet formant have been used for measuring speech recognition threshold in signal-to-noise ratio. the purpose of this study was to determine signal-to-noise ratio (snr) needed for 50 percent correct...

This paper represents the parametric effects on slump and compressive strength of aluminosilicate based Geopolymer concrete using by Taguchi method. A total nine mix proportions were considered to evaluate effect sodium hydroxide (NaOH) solution, Solution/Binder (SB) ratio percentage superplasticizer. Results indicated that highest 165 mm 28 days 68.37 MPa was obtained for with superplasticizer...

  Background: Educational centers have higher standards for controlling noise pollution as it has been shown that noise pollution is a major cause of discomfort for teachers and students. Noise pollution reduces concentration, interferes in the conversation, and leads to dropouts and lower grades especially in mathematics. The present study aimed to evaluate noise pollution in the schools ...

Optical coherence tomography (OCT) is a three-dimensional imaging technique based on low interferometry of near-infrared broadband light and has been applied to medical diagnoses, such as structural diagnosis the retina in ophthalmology. For several decades, functional variations OCT have also developed. angiography (OCTA) one can visualize blood flows (microvasculature) biological tissues by a...

Type Ia supernovae (SNe) play a key role in the determination of the cosmological parameters because their absolute luminosities can directly be derived from measurements of their light curves. Despite several decades of observations and theoretical studies, the nature of SN Ia progenitors is still unknown, and this fact brings ambiguity into the interpretation of recent cosmological results. O...

OBJECTIVE Schmorl's nodes (SN) are common, but little is known of their relationship with degenerative change and back pain or genetic and environmental factors influencing their expression. We studied healthy female twin volunteers to determine the prevalence and clinical features associated with SN. METHODS Serial sagittal T1- and T2-weighted magnetic resonance images of the lower thoracic ...