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https://www.readbyqxmd.com/read/28938328/bulla-down-endoscopic-sphenoidotomy
#1
Mohannad Al-Qudah
Surgical approach to the sphenoid sinus is still one of the most challenging steps in sinus surgery. The author describes a novel, simple, and safe technique to access sphenoid sinus to manage isolated sphenoid pathologies or approach skull base by removing the bulla ethmoidalis and temporarily lateralizing the middle turbinate during endoscopic sinus surgery. The current approach provides an effective method to access the sphenoid sinus without increasing morbidity and avoids unnecessary possible complications associated with turbinates' resection...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938301/are-we-fully-utilizing-the-functionalities-of-modern-operating-room-ventilators
#2
Shujie Liu, Robert M Kacmarek, Jun Oto
PURPOSE OF REVIEW: The modern operating room ventilators have become very sophisticated and many of their features are comparable with those of an ICU ventilator. To fully utilize the functionality of modern operating room ventilators, it is important for clinicians to understand in depth the working principle of these ventilators and their functionalities. RECENT FINDINGS: Piston ventilators have the advantages of delivering accurate tidal volume and certain flow compensation functions...
September 21, 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28936551/management-of-maxillary-sinus-inverted-papilloma-via-endoscopic-partial-medial-maxillectomy-with-an-inferior-turbinate-reversing-approach
#3
Feng Wang, Yang Yang, Shenqing Wang, Haihong Chen, Dehui Wang, Qinying Wang
The aim of this study is to evaluate the efficacy of endoscopic treatment for maxillary inverted papilloma (IP) through partial medial maxillectomy with an inferior turbinate reversing approach. A retrospective analysis of patients treated in our institution for maxillary sinus IP between July 2011 and August 2015 was performed. Demographics, operative technique, characteristics of tumors, complications, postoperative follow-up, and recurrence were evaluated. Twenty-two patients were enrolled in the study. All tumor attachments were identified intraoperatively...
September 21, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28928487/spiraling-light-with-magnetic-metamaterial-quarter-wave-turbines
#4
Jinwei Zeng, Ting S Luk, Jie Gao, Xiaodong Yang
Miniaturized quarter-wave plate devices empower spin to orbital angular momentum conversion and vector polarization formation, which serve as bridges connecting conventional optical beam and structured light. Enabling the manipulability of additional dimensions as the complex polarization and phase of light, quarter-wave plate devices are essential for exploring a plethora of applications based on orbital angular momentum or vector polarization, such as optical sensing, holography, and communication. Here we propose and demonstrate the magnetic metamaterial quarter-wave turbines at visible wavelength to produce radially and azimuthally polarized vector vortices from circularly polarized incident beam...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28927843/a-hybrid-clustering-approach-for-multivariate-time-series-a-case-study-applied-to-failure-analysis-in-a-gas-turbine
#5
Cristiano Hora Fontes, Hector Budman
A clustering problem involving multivariate time series (MTS) requires the selection of similarity metrics. This paper shows the limitations of the PCA similarity factor (SPCA) as a single metric in nonlinear problems where there are differences in magnitude of the same process variables due to expected changes in operation conditions. A novel method for clustering MTS based on a combination between SPCA and the average-based Euclidean distance (AED) within a fuzzy clustering approach is proposed. Case studies involving either simulated or real industrial data collected from a large scale gas turbine are used to illustrate that the hybrid approach enhances the ability to recognize normal and fault operating patterns...
September 16, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28926718/corrigendum
#6
(no author information available yet)
Brunner JP, Jawad BA, McCoul ED. Polypoid change of the middle turbinate and paranasal sinus polyposis are distinct entities. Otolaryngol Head Neck Surg. 2017;157:519-523. (Original doi: 10.1177/0194599817711887) The Results section of this article and its abstract contained several errors in describing data that appears in Tables 1 and 2. The tables contain the correct information, the corrected abstract and article text appears below. Abstract: Results. Of 593 patients, 23 (3.9%) had PCMT and 44 (7.4%) had PSP...
September 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28917718/olfactory-toxicity-in-rats-following-manganese-chloride-nasal-instillation-a-pilot-study
#7
Melanie L Foster, Deepa B Rao, Taylor Francher, Samantha Traver, David C Dorman
Following inhalation, manganese travels along the olfactory nerve from the olfactory epithelium (OE) to the olfactory bulb (OB). Occupational exposure to inhaled manganese is associated with changes in olfactory function. This pilot study evaluated two related hypotheses: (a) intranasal manganese administration increases OE and OB manganese concentrations; and (b) intranasal manganese exposure impairs performance of previously trained rats on a go-no-go olfactory discrimination (OD) task. Male Fischer 344 rats were trained to either lever press ("go") in response to a positive conditioned stimulus (CS+: vanillin) or to do nothing ("no go") when a negative conditioned stimulus (CS-: amyl acetate) was present...
September 13, 2017: Neurotoxicology
https://www.readbyqxmd.com/read/28913312/the-efficacy-of-coblator-in-turbinoplasty
#8
Keun-Cheol Lee, Jeong-Min Cho, Seok-Kwun Kim, Kwang-Ryeol Lim, Sang-Yun Lee, Su-Seong Park
BACKGROUND: Turbinate hypertrophy is one of the common causes of chronic nasal obstruction. In principle, therapeutic guidelines recommend medical treatment. Failure to treat turbinate thickening despite drug therapy may indicate the need for surgery. The main aim of this study was to determine the effect of radiofrequency surgery, among various other surgical procedures, on people with both nasal septal deviation and turbinate hypertrophy. METHODS: Among people with nasal deviation who visited the subject hospital between July 2008 to July 2014, 21 people with nasal septal deviation and severe turbinate hypertrophy before their surgery had undergone septoplasty with turbinoplasty using radiofrequency combined with septoplasty...
June 2017: Arch Craniofac Surg
https://www.readbyqxmd.com/read/28910652/disintegration-of-nannochloropsis-sp-cells-in-an-improved-turbine-bead-mill
#9
Zhidong Pan, Ying Huang, Yanmin Wang, Zhiwei Wu
The Nannochloropsis sp. cells in aqueous solution were disintegrated in an improved bead mill with turbine agitator. The disintegration rates of cell samples disrupted under various operating parameters (i.e., circumferential speed, bead size, disintegration time, and cell concentration) were analyzed. An experimental strategy to optimize the parameters affecting the cell disintegration process was proposed. The results show that Nannochloropsis sp. cells can be effectively disintegrated in the turbine stirred bead mill under the optimum condition (i...
August 24, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28904135/bird-and-bat-species-global-vulnerability-to-collision-mortality-at-wind-farms-revealed-through-a-trait-based-assessment
#10
Chris B Thaxter, Graeme M Buchanan, Jamie Carr, Stuart H M Butchart, Tim Newbold, Rhys E Green, Joseph A Tobias, Wendy B Foden, Sue O'Brien, James W Pearce-Higgins
Mitigation of anthropogenic climate change involves deployments of renewable energy worldwide, including wind farms, which can pose a significant collision risk to volant animals. Most studies into the collision risk between species and wind turbines, however, have taken place in industrialized countries. Potential effects for many locations and species therefore remain unclear. To redress this gap, we conducted a systematic literature review of recorded collisions between birds and bats and wind turbines within developed countries...
September 13, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28903879/salmonella-enterica-subsp-diarizonae-serotype-61-k-1-5-7-associated-with-chronic-proliferative-rhinitis-and-high-nasal-colonization-rates-in-a-flock-of-texel-sheep-in-switzerland
#11
Nadine Stokar-Regenscheit, Gudrun Overesch, Regula Giezendanner, Simone Roos, Corinne Gurtner
Salmonella (S.) enterica subspecies diarizonae (IIIb) serovar 61:(k):1,5,(7) (S. IIIb 61:(k):1,5,(7)) is considered to be host adapted to sheep and is found regularly in feces of healthy carriers and of sheep with salmonellosis. A few cases of chronic proliferative rhinitis (CPR) in sheep have been described as a new disease in association with S. IIIb 61:k:1,5,(7) in the USA, in Spain and now for the first time in Switzerland. Three animals of a flock of Texel sheep suffering from chronic nasal discharge and dyspnea with subsequent death were necropsied...
September 15, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28892586/introducing-the-new-coblation-%C3%A2-turbinator-%C3%A2-turbinate-reduction-wand-our-initial-experience-of-twenty-two-patients-requiring-surgery-for-nasal-obstruction
#12
Grace C Khong, Lepa Lazarova, Amanda Bartolo, Samuel C Leong
Coblation(™) Turbinator(™) is a coblation wand designed specifically for turbinate reduction surgery. We present an audit of 22 patients evaluating the clinical outcome of septoturbinoplasty for nasal obstruction caused by inferior turbinate hypertrophy using the Coblation(™) Turbinator(™) wand and comparing it to a similar-sized cohort who had microdebrider turbinoplasty. Primary clinical outcome was evaluated using the Nasal Obstruction Symptom Evaluation (NOSE) scale and the peak nasal inspiratory flow rate measurement and secondary outcome measures were days of admission or readmission rates and episodes of bleeding...
September 11, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28888024/airflow-and-symptom-outcomes-between-allergic-and-non-allergic-rhinitis-patients-from-turbinoplasty
#13
K Parthasarathi, J M Christensen, R Alvarado, H P Barham, R Sacks, R J Harvey
BACKGROUND: Inferior turbinate procedures are applied to relieve medically refractory nasal obstruction. However, the nature of congestion differs between allergic(AR) and non-allergic rhinitis(NAR). This study compares surgical outcomes between AR and NAR patients. METHODOLOGY: A case-control study of patients undergoing turbinate with or without septoplasty surgery for nasal obstruction was performed. Patient reported outcomes were: nasal obstruction, global nasal function(GNF), and sino-nasal outcome test(SNOT-22) with rhinitis, facial symptom, sleep and psychological sub-scores...
September 9, 2017: Rhinology
https://www.readbyqxmd.com/read/28881937/using-a-sound-field-to-reduce-the-risks-of-bird-strike-an-experimental-approach
#14
John P Swaddle, Nicole M Ingrassia
Each year, billions of birds collide with large human-made structures, such as building, towers, and turbines, causing substantial mortality. Such bird-strike, which is projected to increase, poses risks to populations of birds and causes significant economic costs to many industries. Mitigation technologies have been deployed in an attempt to reduce bird-strike, but have been met with limited success. One reason for bird-strike may be that birds fail to pay adequate attention to the space directly in front of them when in level, cruising flight...
July 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28877965/tests-of-the-sorption-and-olfactory-fovea-hypotheses-in-the-mouse
#15
David Michael Coppola, Brittaney E Ritchie, Brent A Craven
The spatial distribution of receptors within sensory epithelia (e.g. retina and skin) is often markedly non-uniform to gain efficiency in information capture and neural processing. By contrast, odors, unlike visual and tactile stimuli, have no obvious spatial dimension. What need then could there be for either nearest-neighbor relationships or non-uniform distributions of receptor cells in the olfactory epithelium (OE)? Adrian (1942; 1950) provided the only widely debated answer to this question when he posited that the physical properties of odors, such as volatility and water solubility, determine a spatial pattern of stimulation across the OE that could aid odor discrimination...
September 6, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28877858/effects-of-surgical-treatment-of-hypertrophic-turbinates-on-the-nasal-obstruction-and-the-quality-of-life
#16
Katharina Stölzel, Marie Bandelier, Agnieszka J Szczepek, Heidi Olze, Steffen Dommerich
PURPOSE: Chronic hyperplasia of the inferior nasal concha is accompanied by a nasal obstruction; however, there is no standardised surgical treatment for this condition. Here, we compared the outcome of three surgical techniques frequently used to treat the hyperplasia of inferior turbinates: turbinectomy with lateralization, submucosal electrocautery and laser cautery additional to septoplasty. MATERIALS AND METHODS: One hundred and nine patients participated in this prospective randomized study upon signing written consent...
August 30, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28877191/indirect-adaptive-soft-computing-based-wavelet-embedded-control-paradigms-for-wt-pv-sofc-in-a-grid-charging-station-connected-hybrid-power-system
#17
Sidra Mumtaz, Laiq Khan, Saghir Ahmed, Rabiah Bader
This paper focuses on the indirect adaptive tracking control of renewable energy sources in a grid-connected hybrid power system. The renewable energy systems have low efficiency and intermittent nature due to unpredictable meteorological conditions. The domestic load and the conventional charging stations behave in an uncertain manner. To operate the renewable energy sources efficiently for harvesting maximum power, instantaneous nonlinear dynamics should be captured online. A Chebyshev-wavelet embedded NeuroFuzzy indirect adaptive MPPT (maximum power point tracking) control paradigm is proposed for variable speed wind turbine-permanent synchronous generator (VSWT-PMSG)...
2017: PloS One
https://www.readbyqxmd.com/read/28875122/the-utility-of-sentinel-node-biopsy-for-sinonasal-melanoma
#18
Michael S Oldenburg, Daniel L Price
Objective  Report two positive sentinel node biopsies for sinonasal melanoma. Design  Retrospective review. Setting  Academic tertiary care center. Participants  Patients who underwent sentinel node biopsy for sinonasal melanoma between November 1, 2014 and November 1, 2015. Main Outcome Measures  Clinical course. Results  Two patients were identified. Patient 1 (83M) presented with a sinonasal melanoma anterior to the left inferior turbinate and was clinically N0 neck. Lymphoscintigraphy revealed two sentinel nodes in the ipsilateral and three in the contralateral cervical basins...
October 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28874258/acoustic-dose-behavioral-response-relationship-in-sea-bass-dicentrarchus-labrax-exposed-to-playbacks-of-pile-driving-sounds
#19
Ronald A Kastelein, Nancy Jennings, Aimée Kommeren, Lean Helder-Hoek, Jessica Schop
The foundations of offshore wind turbines are attached to the sea bed by percussion pile driving. Pile driving sounds may affect the behavior of fish. Acoustic dose-behavioral response relationships were determined for sea bass in a pool exposed for 20 min to pile driving sounds at seven mean received root-mean-square sound pressure levels [SPLrms; range: 130-166 dB re 1 μPa; single strike sound exposure level (SELss) range: 122-158; 6 dB steps]. Initial responses (sudden, short-lived changes in swimming speed and direction) and sustained responses (changes in school cohesion, swimming depth, and speed) were quantified...
August 31, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28863993/impact-of-shear-stress-and-impeller-design-on-the-production-of-biogas-in-anaerobic-digesters
#20
Aline Lebranchu, Stéphane Delaunay, Philippe Marchal, Fabrice Blanchard, Stéphane Pacaud, Michel Fick, Eric Olmos
Today, intensification of anaerobic digestion is still a scientific and technical challenge. The present study proposed combined experimental and computational fluid dynamics simulations to characterize the impact of shear stress and impeller design on the biogas production after sequential additions of substrate. Liquid phase (cattle manure digestate) rheological law was experimentally determined and input in numerical simulations. The results showed that the original use of a double helical ribbon in digester allowed a significantly faster dispersion of fresh substrate than the use of a classical Rushton turbine, leading to a 50% higher methane production rate...
July 23, 2017: Bioresource Technology
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