Mechanics of removing water from the ear canal: Rayleigh–Taylor instability

A novel method of removing a foreign body from the external ear canal.

To the Editor: A bewildered 7-year-old girl presented with a smooth plastic bead impacted into the right ear canal. On examination the canal was swollen, irritated and tender owing to previous attempts to remove the bead. The bead, measuring 4 mm in diameter, was pushed almost against the eardrum. A further attempt to remove the bead resulted in an agonised yell — further attempts to remove the...

the effect of traffic density on the accident externality from driving the case study of tehran

در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...

Mass in the ear canal.

Mechanics of the frog ear.

The frog inner ear contains three regions that are sensitive to airborne sound and which are functionally distinct. (1) The responses of nerve fibres innervating the low-frequency, rostral part of the amphibian papilla (AP) are complex. Electrical tuning of hair cells presumably contributes to the frequency selectivity of these responses. (2) The caudal part of the AP covers the mid-frequency p...

The shape of the ear canal

It is proved that the measurement of the acoustic pressure on the ear membrane allows one to determine the shape of the ear canal uniquely. © 2006 Elsevier B.V. All rights reserved. PACS: 02.30.Jr; 03.40.Kf