Results 31 to 40 of about 171,543 (348)

The endocranial morphology and inner ear of the abelisaurid theropod Aucasaurus garridoi [PDF]

open access: yes, 2015
A partial cranial endocast and right inner ear of the Cretaceous abelisaurid dinosaur Aucasaurus garridoi were digitally reconstructed from CT scans.
Paulina Carabajal, Ariana   +1 more
core   +1 more source

Investigation of photoplethysmography and arterial blood oxygen saturation from the ear-canal and the finger under conditions of artificially induced hypothermia [PDF]

open access: yes, 2015
Pulse oximeters relay on the technique of photoplethysmography (PPG) to estimate arterial oxygen saturation (SpO2). In conditions of poor peripheral perfusion such as hypotension, hypothermia, and vasoconstriction, pulse oximeters become inaccurate or ...
Budidha, K., Kyriacou, P. A.
core   +1 more source

Pleomorphic adenoma presenting with conductive hearing loss in the ear canal: a case report and review of the literature [PDF]

open access: yes, 2014
INTRODUCTION: Pleomorphic adenoma accounts for 65 percent of all salivary gland tumors. It has been identified in several anatomical regions, but pleomorphic adenoma arising in the ear canal, first described in 1951, is extremely rare. CASE PRESENTATION:
Ayako Maruyama   +2 more
core   +2 more sources

Cochlear-bone wave can yield a hearing sensation as well as otoacoustic emission

open access: yes, 2014
A hearing sensation arises when the elastic basilar membrane inside the cochlea vibrates. The basilar membrane is typically set into motion through airborne sound that displaces the middle ear and induces a pressure difference across the membrane.
Reichenbach, T., Tchumatchenko, T.
core   +1 more source

Cerebral Abscess with Rupture into the Ventricles due to Chronic Otitis Media

open access: yesPhilippine Journal of Otolaryngology Head and Neck Surgery, 2018
This 43-year-old man with a known history of schizophrenia presented with a one-week history of left ear pain accompanied by a purulent discharge from the external auditory canal over the last 3 days. Shortly afterwards he became confused.
Ian C. Bickle, Diyana Mohamed
doaj   +1 more source

Dermal cylindroma of the external auditory canal

open access: yesAutopsy and Case Reports, 2023
External auditory canal (EAC) cylindroma is a rare tumor that mainly presents as a painless mass over the lateral aspect of the ear canal. They have been designated under different nomenclatures in the literature, and controversies persist about their ...
Vivek Dokania, Indranil Mukherjee
doaj  

Capillary hemangioma of tympanic cleft [PDF]

open access: yes, 2009
We present an extensive capillary hemangioma of right ear in an 11-year-old child involving external auditory canal, middle ear and mastoid. Patient was presented with chronic purulent discharge and aural mass in right ear. The Computarize tomography (CT)
Bhandary, Sangita   +3 more
core   +1 more source

Squamous papilloma in the external auditory canal

open access: yesClinical Case Reports, 2021
Squamous papilloma is a benign neoplasm and most commonly occurs in the oral cavity or larynx but rarely in the external auditory canal. Human papilloma virus is thought to be the cause. The effective treatment is surgical excision.
Junhui Jeong
doaj   +1 more source

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

open access: yesAdvanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao   +12 more
wiley   +1 more source

In-ear photoplethysmography for central pulse waveform analysis in non-invasive hemodynamic monitoring [PDF]

open access: yes, 2017
In recent years, the analysis of the photoplethys-mographic (PPG) pulse waveforms has attracted much research focus. However, the considered signals are primarily recorded at the fingertips, which suffer from reduced peripheral perfusion in situations ...
Feldheiser, Aarne   +6 more
core   +1 more source

Home - About - Disclaimer - Privacy