A controllable transformation from interfacial to filamentary switching mode is presented on a ZrO2/ZrO2 - x /ZrO2 tri-layer resistive memory. The two switching modes are investigated with possible switching and transformation mechanisms proposed. Resistivity modulation of the ZrO2 - x layer is proposed to be responsible for the switching in the interfacial switching mode through injecting/retr...

OBJECTIVES This study aims to assess possible wound complications of tympanoplasty and tympanomastoidectomy with or without postoperative mastoid dressing. PATIENTS AND METHODS A total of 37 patients (22 females, 15 males; mean age: 23.88 years; range 9 to 64 years) who underwent middle ear or mastoid operations via postauricular incision were included in this prospective, randomized, control...

OBJECTIVE To determine the prognostic factors that affect surgical and audiologic outcomes in inlay tympanoplasty after long-term follow-up. DESIGN Case series study. SETTING Tertiary referral center. PATIENTS Sixty-two patients who underwent 71 procedures were enrolled in the study. Patient ages ranged from 31 to 87 years (mean [SD] age, 61.2 [12.9] years). Mean (SD) follow-up was 635.7 ...

INTRODUCTION In the last decade, there has been an increasing use of cartilage grafts in the primary repair of tympanic membrane perforations. The major advantages of cartilage are its stiffness and its very low metabolic requirements, which make it particularly suitable for difficult conditions, such as subtotal perforations, adhesive otitis and reoperation. OBJECTIVE To analyze the impact o...

OBJECTIVE Despite evidence that therapeutic mastoidectomy does not improve outcomes in noncholesteatomatous chronic otitis media, it remains widely performed. An up-to-date systematic review is undertaken and conclusions drawn regarding the best evidence-based practice of its management. DATA SOURCES PubMed, Google Scholar, Medline Embase, Cochrane, and Web of Science. REVIEW METHOD A combi...

OBJECTIVE To determine which independent variables influence the efficacy of type I tympanoplasty in adult and pediatric populations. DATA SOURCES A search of the PubMed database and Cochrane Database of Systematic Reviews using the key words "tympanoplasty OR myringoplasty" from January 1966 to July 2014 was performed. STUDY SELECTION Studies reporting outcomes of myringoplasty or Type I t...

UNLABELLED The cartilage has been successfuly used in reconstructive ear surgery for more than one hundred years. Histologic study of autografts cartilage (tragal or conchal) showed good long-term preservation of cartilage cells. The aim of this paper is to assess the hearing results in tympanoplasties with the use of cartilage palisade technique. MATERIAL AND METHODS The retrospective analys...

Introduction. The presence of a serous cyst in the tympanic membrane implies the description of a new or unpublished entity based on our knowledge whose origin may be very unlikely explained on actual embryologic and anatomic background. Clinical Case. We present a case of a 45-year-old woman with progressing right hearing loss. Physical examination revealed a whitish, round-shaped malformation...

background: hearing loss due to chronic otitis media is common. the purpose of this study was to evaluate hearing before and after canal wall up, canal wall down mastoidectomy and tympanoplasty. methods: from 2004 to 2007, all patients with chronic otitis media who were admitted at the department of otolaryngology, babol medical university were studied. for 126 patients' canal wall up, can...

We report a bistable organic memory made of a single organic layer embedded between two electrodes, and compare to the organic/metal nanoparticle/organic tri-layers device [Ma, Liu, and Yang, Appl. Phys. Lett. 80, 2997 (2002)]. We demonstrate that the two devices exhibit similar temperature-dependent behaviors, a thermally activated behavior in their low conductive state (off-state) and a sligh...