منابع مشابه
Quantifying air-conducted acoustic radiation from the bone-conduction vibrator.
Sound pressure levels in the external auditory canals of 50 subjects were measured at 2000 and 4000 Hz with a bone-conduction vibrator on the forehead, the mastoid ipsilateral to the probe microphone, and the mastoid contralateral to the probe microphone. A plug was placed in the external auditory canal to minimize sound pressure levels in the external auditory canal produced by the osseotympan...
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SHADOWPIX are white surfaces that display several prescribed images formed by the self-shadowing of the surface when lit from certain directions. The effect is surprising and not commonly seen in the real world. We present algorithms for constructing SHADOWPIX that allow up to four images to be embedded in a single surface. SHADOWPIX can produce a variety of unusual effects depending on the emb...
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Correlations between acoustic properties and bone density were investigated in the 12 defatted bovine cancellous bone specimens in vitro. Speed of sound (SOS) and broadband ultrasonic attenuation (BUA) were measured in three different frequency bandwidths from 0.5 to 2 MHz using three matched pairs of transducers with the center frequencies of 1, 2.25, and 3.5 MHz. The relative orientation betw...
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Regional anesthetic techniques for children have recently enjoyed a justified resurgence in popularity. Intraoperative blockade of the neuraxis, whether by the spinal or epidural route, provides excellent analgesia with minimal physiologic alteration and, with an indwelling catheter, can provide continuous pain relief for many days postoperatively. As a supplement to general anesthesia, local a...
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The presence of certain underlying medical conditions, such as psoriasis, diabetes, leukaemia or previous neurological diseases, are increased risk factors for more complications [3]. Even when many of them are due to anaesthetic techniques it should be also considered the influence of some other variables such as delivery [4] or the type of surgery, because the neurological deficits are very f...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 2011
ISSN: 0003-2409
DOI: 10.1111/j.1365-2044.2011.07015_1.x