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https://www.readbyqxmd.com/read/28534029/submucosal-inferior-turbinoplasty-using-a-new-continuous-suction-irrigation-method
#1
Takeo Kanaya, Naoyuki Kohno
INTRODUCTION: Numerous surgical techniques for inferior turbinate hypertrophy (ITH) have been reported, each with advantages and disadvantages. Submucosal turbinoplasty with removal of the bony component of the inferior turbinate (IT) is an excellent procedure to expand the nasal cavity. However, this procedure requires a large incision to remove the inferior turbinate bone (ITB) and is associated with hemorrhage, crust formation, and adhesion. A smaller incision would avoid such complications...
2017: Frontiers in Surgery
https://www.readbyqxmd.com/read/28530250/the-hump-columellar-strut-a-reliable-technique-for-correction-of-nasal-tip-underprojection
#2
P G Giacomini, S Mocella, S Di Girolamo, R De Berardinis, A Boccieri
Nasal tip under projection is often found in rhinoplasty cases both for congenital or post-traumatic deformity. Nasal trauma may result in alteration of the external and internal nasal structures with following aesthetic impairment and difficulties in breathing. Post-traumatic surgery is frequent, but restoration of pre-traumatic form and function remains a challenge. The present paper describes a new method to increase tip projection by a columellar strut harvested from the autologous nasal bone and cartilage of the resected hump...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28524090/wind-turbine-diagnosis-under-variable-speed-conditions-using-a-single-sensor-based-on-the-synchrosqueezing-transform-method
#3
Yanjie Guo, Xuefeng Chen, Shibin Wang, Ruobin Sun, Zhibin Zhao
The gearbox is one of the key components in wind turbines. Gearbox fault signals are usually nonstationary and highly contaminated with noise. The presence of amplitude-modulated and frequency-modulated (AM-FM) characteristics compound the difficulty of precise fault diagnosis of wind turbines, therefore, it is crucial to develop an effective fault diagnosis method for such equipment. This paper presents an improved diagnosis method for wind turbines via the combination of synchrosqueezing transform and local mean decomposition...
May 18, 2017: Sensors
https://www.readbyqxmd.com/read/28520827/surgical-outcomes-of-bony-batten-grafting-to-correct-caudal-septal-deviation-in-septoplasty
#4
Do-Youn Kim, Sung Hoon Nam, Sami E Alharethy, Yong Ju Jang
Improtance: Correction of caudal septal deviation with a batten graft has been popularized recently. However, few reports have documented the surgical outcomes of this technique, especially the use of bony batten grafts in septoplasty. Objective: To evaluate the surgical outcomes of bony batten grafting for the management of caudal septal deviation in endonasal septoplasty. Design, Setting, and Participants: This retrospective cohort study evaluates the medical records of 141 patients with caudal septal deviation who underwent septoplasty using bony batten grafts from September 1, 2011, through February 29, 2016, at a tertiary referral hospital...
May 18, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28518004/middle-ear-barotrauma-in-student-pilots
#5
Jung Heob Sohn, Kyoung Rai Cho
INTRODUCTION: The present study reports the clinical features of middle ear barotrauma in student pilots in the Republic of Korea Air Force. METHODS: The authors reviewed medical records of student pilots with barotrauma. The grade of barotrauma was assigned using Teed's classification. This study included nasal symptoms, endoscopic findings of the nasal cavity, and clinical course (duration, recurrence). The relationship between middle ear barotrauma and the nasal airway was also evaluated...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28513204/on-design-mining-coevolution-and-surrogate-models
#6
Richard J Preen, Larry Bull
Design mining is the use of computational intelligence techniques to iteratively search and model the attribute space of physical objects evaluated directly through rapid prototyping to meet given objectives. It enables the exploitation of novel materials and processes without formal models or complex simulation. In this article, we focus upon the coevolutionary nature of the design process when it is decomposed into concurrent sub-design-threads due to the overall complexity of the task. Using an abstract, tunable model of coevolution, we consider strategies to sample subthread designs for whole-system testing and how best to construct and use surrogate models within the coevolutionary scenario...
May 17, 2017: Artificial Life
https://www.readbyqxmd.com/read/28509670/pediatric-nasal-surgery-timing-and-technique
#7
Celeste C Gary
PURPOSE OF REVIEW: Timing of pediatric nasal surgery has always been a controversial topic. Concern over disrupting growing parts of the face and causing permanent facial deformity has led to a primarily conservative approach. Many surgeons feel that it is prudent to wait until the patient has completed nasal growth after puberty to pursue nasal surgery. RECENT FINDINGS: Recently, this attitude has been challenged with evidence that not only is nasal surgery in the pediatric age group not a detriment to facial growth, but failure to correct significant nasal deformity may actually cause dysmorphic facial growth secondary to obligate mouth breathing...
May 13, 2017: Current Opinion in Otolaryngology & Head and Neck Surgery
https://www.readbyqxmd.com/read/28508726/does-the-timing-of-middle-turbinate-resection-influence-quality-of-life-outcomes-for-patients-with-chronic-rhinosinusitis
#8
George A Scangas, Aaron K Remenschneider, Benjamin S Bleier, Eric H Holbrook, Stacey T Gray, Ralph B Metson
Objective To evaluate the impact of bilateral middle turbinate resection (BMTR) on patient-reported quality of life following primary and revision endoscopic sinus surgery (ESS) for chronic rhinosinusitis (CRS). Study Design Prospective cohort study. Setting Tertiary care center. Subjects and Methods Patients with CRS who were recruited from 11 otolaryngologic practices completed the Sino-Nasal Outcome Test-22, Chronic Sinusitis Survey, and EuroQol 5-Dimension questionnaires at baseline, as well as 3 and 12 months after ESS...
May 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28499215/numerical-study-on-the-air-conditioning-characteristics-of-the-human-nasal-cavity
#9
Da-Woon Kim, Seung-Kyu Chung, Yang Na
The air-conditioning characteristics of the human nasal cavity were investigated using computational fluid dynamics. The wall layer was modeled as a heat conducting layer consisting of water with constant thickness placed on top of epithelial cells. By assuming constant tissue temperature, prescribed to be 36 (°)C, which is close to the alveolar condition, the proposed wall model yielded a spatially varying surface temperature distribution that is in reasonable agreement with the measurement studies in the literature...
April 30, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28494130/visualization-of-stereoscopic-anatomic-models-of-the-paranasal-sinuses-and-cervical-vertebrae-from-the-surgical-and-procedural-perspective
#10
Jian Chen, Andrew D Smith, Majid A Khan, Allan R Sinning, Marianne L Conway, Dongmei Cui
Recent improvements in three-dimensional (3D) virtual modeling software allows anatomists to generate high-resolution, visually appealing, colored, anatomical 3D models from computed tomography (CT) images. In this study, high-resolution CT images of a cadaver were used to develop clinically relevant anatomic models including facial skull, nasal cavity, septum, turbinates, paranasal sinuses, optic nerve, pituitary gland, carotid artery, cervical vertebrae, atlanto-axial joint, cervical spinal cord, cervical nerve root, and vertebral artery that can be used to teach clinical trainees (students, residents, and fellows) approaches for trans-sphenoidal pituitary surgery and cervical spine injection procedure...
May 11, 2017: Anatomical Sciences Education
https://www.readbyqxmd.com/read/28493894/multi-scale-temporal-patterns-in-fish-presence-in-a-high-velocity-tidal-channel
#11
Haley A Viehman, Gayle Barbin Zydlewski
The natural variation of fish presence in high-velocity tidal channels is not well understood. A better understanding of fish use of these areas would aid in predicting fish interactions with marine hydrokinetic (MHK) devices, the effects of which are uncertain but of high concern. To characterize the patterns in fish presence at a tidal energy site in Cobscook Bay, Maine, we examined two years of hydroacoustic data continuously collected at the proposed depth of an MHK turbine with a bottom-mounted, side-looking echosounder...
2017: PloS One
https://www.readbyqxmd.com/read/28493194/effectiveness-of-quercetin-in-an-experimental-rat-model-of-allergic-rhinitis
#12
Mustafa Sagit, Halil Polat, Seren Gulsen Gurgen, Elife Berk, Sabri Guler, Mehmet Yasar
We aimed to investigate whether quercetin had a therapeutic effect in an experimental rat model of allergic rhinitis. The study was conducted with 35 rats, which were randomly assigned into 4 groups: group 1 (n = 5), sham group; group 2 (quercetin group, n = 10) received 80 mg/kg day quercetin; group 3 (steroid group, n = 10) received steroid (mometasone furoate); and group 4 (control group, n = 10), received ovalbumin alone. Rats were sensitized by administration of ovalbumin on alternate days over 14 days via an intraperitoneal route...
May 10, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28490404/causes-of-dacryocystorhinostomy-failure-external-versus-endoscopic-approach
#13
Giant C Lin, Christopher D Brook, Mark P Hatton, Ralph Metson
OBJECTIVES: To compare the causes of failure between external and endoscopic dacryocystorhinostomy (DCR) techniques for the treatment of lacrimal obstruction. STUDY DESIGN: A retrospective cohort study. METHODS: The study population consisted of 53 consecutive patients who underwent revision endoscopic DCR from 2002 to 2013 for lacrimal duct obstruction. Identified causes of previous DCR failure were compared between patients whose initial surgery was performed through an external versus an endoscopic approach...
May 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28489235/long-term-follow-up-of-ktp-laser-turbinate-reduction-for-the-treatment-of-obstructive-rhinopathy
#14
Hemal Raja, Scott Mitchell, George Barrett, Ashish Sharma, Derek W Skinner
We investigated the subjective, long-term, patient-reported symptom control after endoscopic potassium titanyl phosphate (KTP) laser reduction of the inferior turbinates. Symptoms were listed preoperatively and patients were asked, via telephone interview, the status of their symptoms. Chi-square analysis was used to assess statistical significance of the surgical intervention. Thirty-six patients (male:female ratio: 5:4) aged 13 to 80 years (mean: 37.2) were available for follow-up. The mean follow-up time was 68...
April 2017: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/28485289/comparative-assessment-of-monopolar-and-bipolar-radiofrequency-surgery-of-inferior-turbinate
#15
Hasan Emre Koçak, Bengül Altaş, Salih Aydın, Ümit Taşkın, Mehmet Faruk Oktay, Mustafa Suphi Elbistanlı, Ayşe Pelin Yiğider
OBJECTIVE: The aim of this study was to compare early outcomes of monopolar (MP) and bipolar (BP) radiofrequency (RF) treatment of inferior turbinate hypertrophy from the perspective of both the patient and the surgeon. STUDY DESIGN: Prospective, randomized, single-blind study. MATERIALS AND METHODS: Seventy-one patients with inferior turbinate hypertrophy resistant to medical treatment. BP RF was used in 36 patients and MP RF in 35 patients, respectively...
July 10, 2016: Otolaryngologia Polska
https://www.readbyqxmd.com/read/28484330/wave-energy-absorption-by-a-submerged-air-bag-connected-to-a-rigid-float
#16
A Kurniawan, J R Chaplin, M R Hann, D M Greaves, F J M Farley
A new wave energy device features a submerged ballasted air bag connected at the top to a rigid float. Under wave action, the bag expands and contracts, creating a reciprocating air flow through a turbine between the bag and another volume housed within the float. Laboratory measurements are generally in good agreement with numerical predictions. Both show that the trajectory of possible combinations of pressure and elevation at which the device is in static equilibrium takes the shape of an S. This means that statically the device can have three different draughts, and correspondingly three different bag shapes, for the same pressure...
April 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28484321/flow-through-a-very-porous-obstacle-in-a-shallow-channel
#17
M J Creed, S Draper, T Nishino, A G L Borthwick
A theoretical model, informed by numerical simulations based on the shallow water equations, is developed to predict the flow passing through and around a uniform porous obstacle in a shallow channel, where background friction is important. This problem is relevant to a number of practical situations, including flow through aquatic vegetation, the performance of arrays of turbines in tidal channels and hydrodynamic forces on offshore structures. To demonstrate this relevance, the theoretical model is used to (i) reinterpret core flow velocities in existing laboratory-based data for an array of emergent cylinders in shallow water emulating aquatic vegetation and (ii) reassess the optimum arrangement of tidal turbines to generate power in a tidal channel...
April 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28481397/endoscopic-endonasal-cerebrospinal-fluid-leak-repair-on-the-ventral-midline-skull-base-a-single-neurosurgical-center-experience
#18
Cihan Isler, Merdin Lyutviev Ahmedov, Mehmet Yigit Akgun, Baris Kucukyuruk, Nurperi Gazioglu, Galip Sanus, Necmettin Tanriover
AIM: The aim of this study was to present the results of endoscopic endonasal repair of ventral midline skull base cerebrospinal fluid (CSF) leak (VMSBL) at our institution and to discuss the technique and results from a neurosurgical perspective. MATERIAL AND METHODS: A retrospective analysis of all VMSBL cases that underwent endoscopic endonasal skull base approach (EESBA) for CSF leak repair at a single tertiary neurosurgical center was performed. Twenty six patients with an average age of 44...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28475499/heat-generation-on-implant-surface-during-abutment-preparation-at-different-elapsed-time-intervals
#19
Abdullah Al-Keraidis, Khalil Aleisa, Ziad Nawaf Al-Dwairi, Hamdi Al-Tahawi, Ming-Lun Hsu, Edward Lynch, Mutlu Özcan
PURPOSE: The purpose of this study was to evaluate heat generation at the implant surface caused by abutment preparation using a diamond bur in a high-speed dental turbine in vitro at 2 different water-coolant temperatures. MATERIALS AND METHODS: Thirty-two titanium-alloy abutments were connected to a titanium-alloy implant embedded in an acrylic resin placed within a water bath at a controlled temperature of 37°C. The specimens were equally distributed into 2 groups (16 each)...
May 3, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28475280/high-temperature-mass-spectrometric-study-of-the-vaporization-processes-and-thermodynamic-properties-in-the-gd2-o3-y2-o3-hfo2-system
#20
Eugene N Kablov, Valentina L Stolyarova, Sergey I Lopatin, Viktor A Vorozhtcov, Fedor N Karachevtsev, Yuriy I Folomeikin
RATIONALE: The refractory properties of the Gd2 O3 -Y2 O3 -HfO2 system are considered promising for the production of many high-temperature materials, e.g., thermal barrier coatings and casting molds for gas turbine engine blades. At high temperatures, components of the Gd2 O3 -Y2 O3 -HfO2 system may vaporize selectively and this may significantly change the physicochemical properties of the materials. Therefore, information on vaporization processes and thermodynamic properties of the Gd2 O3 -Y2 O3 -HfO2 system is of great importance...
May 5, 2017: Rapid Communications in Mass Spectrometry: RCM
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