نتایج جستجو برای: labyrinth weirs

تعداد نتایج: 7497  

Journal: :Journal of biomedical optics 2000
B J Wong J F de Boer B H Park Z Chen J S Nelson

Optical coherence tomography (OCT) was used to image the internal structure of a rat cochlea (ex vivo). Immediately following sacrifice, the temporal bone of a Sprague-Dawley rat was harvested. Axial OCT cross sectional images (over regions of interest, 1x1 mm-2x8 mm) were obtained with a spatial resolution of 10-15 microm. The osseous borders of the lateral membranous labyrinth overlying the c...

2018
Jung Min Ahn Deuk Seok Yang Kang Young Jung Dong Seok Shin

In this study, an integrated system for the comprehensive analysis of climate change, runoff, reservoir operation, and power generation was developed. In order to apply reliable climate change scenarios to the Geum River Basin, we applied representative concentration pathway (RCP) scenarios adopted by the Intergovernmental Panel on Climate Change for its fifth assessment report in 2014 to the s...

Journal: :آب و خاک 0
کاظم اسماعیلی بنیامین نقوی فاطمه کورش وحید جعفر یزدی

abstract weirs are the most common structures for discharge measurement in engineering research. streamline curvature, non hydrostatic pressure distribution on weir and nappe adherence to the weir lead to differences between calculated and measured discharges. thus discharge coefficient, which is the ratio of real and theoretic discharges, is usually less than unity. in circular weirs the press...

Journal: :AJNR. American journal of neuroradiology 2016
M N Pakdaman G Ishiyama A Ishiyama K A Peng H J Kim W B Pope A R Sepahdari

BACKGROUND AND PURPOSE Menière disease and idiopathic sudden sensorineural hearing loss can have overlapping clinical presentation and may have similar pathophysiology. Prior studies using postcontrast 3D-FLAIR MR imaging suggest abnormal blood-labyrinth barrier permeability in both conditions, but the 2 diseases have not been directly compared by using the same imaging techniques. We hypothesi...

2013
Xiangming Li Joel D. Sanneman Donald G. Harbidge Fei Zhou Taku Ito Raoul Nelson Nicolas Picard Régine Chambrey Dominique Eladari Tracy Miesner Andrew J. Griffith Daniel C. Marcus Philine Wangemann

Mutations of SLC26A4 are a common cause of human hearing loss associated with enlargement of the vestibular aqueduct. SLC26A4 encodes pendrin, an anion exchanger expressed in a variety of epithelial cells in the cochlea, the vestibular labyrinth and the endolymphatic sac. Slc26a4 (Δ/Δ) mice are devoid of pendrin and develop a severe enlargement of the membranous labyrinth, fail to acquire heari...

Journal: :Journal of human evolution 2003
Fred Spoor Jean-Jacques Hublin Marc Braun Frans Zonneveld

This paper presents a comprehensive comparative analysis of the Neanderthal bony labyrinth, a structure located inside the petrous temporal bone. Fifteen Neanderthal specimens are compared with a Holocene human sample, as well as with a small number of European Middle Pleistocene hominins, and early anatomically modern and European Upper Palaeolithic humans. Compared with Holocene humans the bo...

Journal: :Science of The Total Environment 2016

محمد محمدی, , مهدی یاسی, ,

  A labyrinth spillway is an overflow spillway to regulate and control flow in canals, rivers and reservoirs. The main hypothesis for the development of such a spillway is to increase the discharge per unit width of structure for a given headwater. This type of structure is often an efficient alternative to a gated-spillway type where either the increase of the flood-passage capacity or the con...

Journal: :Minutes of the Proceedings of the Institution of Civil Engineers 1887

Journal: :The international tinnitus journal 2011
Michael Paparella

Ménière's disease with all of its clinical manifestations can be divided into two categories – those symptoms that derive from the cochlea (the anterior labyrinth) and/or those that arise from the vestibular labyrinth or the posterior part of the inner ear. The symptoms that arise from the cochlea include hearing loss, which can be fluctuant and progressive and often is, or tinnitus which can b...

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