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Xinya Li, Zhiqun D Deng, Tao Fu, Richard S Brown, Jayson J Martinez, Geoffrey A McMichael, Bradly A Trumbo, Martin L Ahmann, Jon F Renholds, John R Skalski, Richard L Townsend
To acquire 3-D tracking data on juvenile salmonids, Juvenile Salmon Acoustic Telemetry System (JSATS) cabled hydrophone arrays were deployed in the forebays of two dams on the Snake River and at a mid-reach reservoir between the dams. The depth distributions of fish were estimated by statistical analyses performed on large 3-D tracking data sets from ~33,500 individual acoustic tagged yearling and subyearling Chinook salmon and juvenile steelhead at the two dams in 2012 and subyearling Chinook salmon at the two dams and the mid-reach reservoir in 2013...
January 17, 2018: Scientific Reports
Ludovic de Gabory, Nicolas Reville, Yannick Baux, Nicolas Boisson, Laurence Bordenave
BACKGROUND: Computational fluid dynamic (CFD) simulations have greatly improved the understanding of nasal physiology. We postulate that simulating the entire and repeated respiratory nasal cycles, within the whole sinonasal cavities, is mandatory to gather more accurate observations and better understand airflow patterns. METHODS: A 3-dimensional (3D) sinonasal model was constructed from a healthy adult computed tomography (CT) scan which discretized in 6.6 million cells (mean volume, 0...
January 16, 2018: International Forum of Allergy & Rhinology
Gülay Açar, Aynur Emine Çiçekcibaşı, İbrahim Çukurova, Kemal Emre Özen, Muzaffer Şeker, İbrahim Güler
INTRODUCTION: The type of endoscopic approach chosen for vidian neurectomy can be specified by evaluating the vidian canal and the surrounding sphenoid sinus structures. OBJECTIVE: The variations and morphometry of the vidian canal were investigated, focusing on the functional correlations between them which are crucial anatomical landmarks for preoperative planning. METHODS: This study was performed using paranasal multidetector computed tomography images that were obtained with a section thickening of 0...
December 26, 2017: Brazilian Journal of Otorhinolaryngology
Ronald G Amedee
No abstract text is available yet for this article.
January 1, 2018: American Journal of Rhinology & Allergy
David Valentín, Alexandre Presas, Matias Bossio, Mònica Egusquiza, Eduard Egusquiza, Carme Valero
Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this situation, dynamic loads and stresses over the structure are high, registering some failures over time, especially in the runner. Therefore, it is important to know the dynamic response of the runner while in operation, i.e., the natural frequencies, damping and mode shapes, in order to avoid resonance and fatigue problems...
January 10, 2018: Sensors
Yu-Fen Lin, Jian-Min Lu, Yan-Na Su, Ze-Bin Zhong, Zuo-Dan Zhang
OBJECTIVE: To observe the clinical effect of heat sensitive moxibustion (HSM) and its regularity of acupoint heat-sensitization in the treatment of allergic rhinitis (AR) patients. METHODS: Seventy patients with AR were randomly divided into HSM and manual acupuncture groups (n=35/group). For patients of the HSM group, acupoints Yintang (EX-HN 3), bilateral Yingxiang (LI 20), Shangxing (GV 23), Tongtian (BL 7), Feishu (BL 13), Hegu (LI 4), etc. were used, and for patients of the manual acupuncture group, bilateral LI 20 and LI 4, Bitong (EX-HN 8) and EX-HN 3 were needled and stimulated with uniform reinforcing-reducing needling method...
December 25, 2017: Zhen Ci Yan Jiu, Acupuncture Research
Chang Hoon Bae, Hyung Gyun Na, Yoon Seok Choi, Si-Youn Song, Yong-Dae Kim
Objectives: Clusterin (CLU) is known as apolipoprotein J, and has three isoforms with different biological functions. CLU is associated with various diseases such as Alzheimer disease, atherosclerosis, and some malignancies. Recent studies report an association of CLU with inflammation and immune response in inflammatory airway diseases. However, the effect of CLU on mucin secretion of airway epithelial cells has not yet been understood. Therefore, the effect and brief signaling pathway of CLU on MUC5AC (as a major secreted mucin) expression were investigated in human airway epithelial cells...
January 11, 2018: Clinical and Experimental Otorhinolaryngology
Yue Hu, Xiaotong Tu, Fucai Li, Guang Meng
Wind turbines usually operate under nonstationary conditions, such as wide-range speed fluctuation and time-varying load. Its critical component, the planetary gearbox, is prone to malfunction or failure, which leads to downtime and repair costs. Therefore, fault diagnosis and condition monitoring for the planetary gearbox in wind turbines is a vital research topic. Meanwhile, the signals measured by the vibration sensors mounted in the gearbox exhibit time-varying and nonstationary features. In this study, a novel time-frequency method based on high-order synchrosqueezing transform (SST) and multi-taper empirical wavelet transform (MTEWT) is proposed for the wind turbine planetary gearbox under nonstationary conditions...
January 7, 2018: Sensors
Alper Dilci, Nuray Varol, İlker Kılıçcıoğlu, Ece Konac, Utku Aydil, Yusuf Kızıl, Sabri Uslu
Background/aim: Nasal polyposis is a chronic inflammatory disease affecting the paranasal sinuses and nasal mucosae. It is thought that genetic and molecular mechanisms in inflammatory and apoptotic pathways are the main factors in the etiopathogenesis of nasal polyposis. The aim of this study was to investigate the expression patterns of CD11b, galectin-1, beclin-1, and caspase-3 in nasal polyps.Materials and methods: The mRNA expression levels of CD11b, galectin-1, beclin-1, and caspase-3 protein and western blot analysis of caspase-3 protein were evaluated in inferior turbinate mucosae and nasal polyp tissues...
December 19, 2017: Turkish Journal of Medical Sciences
I Delcheva, D A Beattie, J Ralston, M Krasowska
Many of the applications of ionic liquids rely on their bulk properties or their solvation abilities. However, it is their interactions with solid surfaces that underpin many of their potential applications in advanced technologies. Whether it is as lubricants for wind turbines or as electrolytes in supercapacitors, there are many areas where ionic liquids can provide an improvement in performance relative to more commonplace liquids. However, there are some barriers to their implementation in such applications...
January 5, 2018: Physical Chemistry Chemical Physics: PCCP
Tim Rubert, Marcus Perry, Grzegorz Fusiek, Jack McAlorum, Pawel Niewczas, Amanda Brotherston, David McCallum
Onshore wind turbine foundations are generally over-engineered as their internal stress states are challenging to directly monitor during operation. While there are industry drivers to shift towards more economical foundation designs, making this transition safely will require new monitoring techniques, so that the uncertainties around structural health can be reduced. This paper presents the initial results of a real-time strain monitoring campaign for an operating wind turbine foundation. Selected reinforcement bars were instrumented with metal packaged optical fibre strain sensors prior to concrete casting...
December 31, 2017: Sensors
Yue Ma, Chunquan Zheng, Le Shi
BACKGROUND: Many Chinese patients who experience chronic rhinosinusitis with nasal polyps (CRSwNP) have been shown to exhibit specifically enhanced TH1/TH17 responses and excessive neutrophil accumulation without demonstrating significant eosinophilia. These patients may be subject to different pathologies and therapies compared to Western patients. YKL40 can be produced by neutrophil and is associated with many inflammatory diseases, while its role in the pathogenesis of chronic rhinosinusitis (CRS) has yet to be determined...
January 3, 2018: European Archives of Oto-rhino-laryngology
Hyun Jin Min, Kyung Soo Kim
No abstract text is available yet for this article.
January 2018: Otolaryngology—Head and Neck Surgery
Jacob P Brunner, Basit A Jawad, Edward D McCoul
No abstract text is available yet for this article.
January 2018: Otolaryngology—Head and Neck Surgery
Felix C P Leach, Martin H Davy, Dmitrij Siskin, Ralf Pechstedt, David Richardson
Measurement of exhaust gas pressure at high speed in an engine is important for engine efficiency, computational fluid dynamics analysis, and turbocharger matching. Currently used piezoresistive sensors are bulky, require cooling, and have limited lifetimes. A new sensor system uses an interferometric technique to measure pressure by measuring the size of an optical cavity, which varies with pressure due to movement of a diaphragm. This pressure measurement system has been used in gas turbine engines where the temperatures and pressures have no significant transients but has never been applied to an internal combustion engine before, an environment where both temperature and pressure can change rapidly...
December 2017: Review of Scientific Instruments
Benjamin Bush, Joseph D Tobias, Chen Lin, James Ruda, Kris R Jatana, Garth Essig, Jennifer Cooper, Dmitry Tumin, Charles A Elmaraghy
INTRODUCTION: Dexmedetomidine is a novel pharmacologic agent that has become a frequently used adjunct during care of pediatric patients with obstructive sleep apnea (OSA) undergoing tonsillectomy. While generally safe and effective, dexmedetomidine is associated with adverse effects of hypotension and bradycardia from its central sympatholytic effects. Due to safety concerns, our institution routinely admits patients with OSA for overnight cardiorespiratory monitoring following tonsillectomy...
January 2018: International Journal of Pediatric Otorhinolaryngology
Katharina Stölzel
No abstract text is available yet for this article.
December 2, 2017: American Journal of Otolaryngology
Tatsuma Matsuda, Kentaro Horiguchi, Yoshinori Higuchi, Toyoyuki Hanazawa, Yoshitaka Okamoto, Yasuo Iwadate
Tension pneumosella (TP) is a rare entity reported as the invagination of the sphenoid sinus mucosa into the skull base after endonasal transsphenoidal surgery. Few studies have reported on TP, and in these studies, invagination is confined to either the intrasellar or suprasellar area. We encountered a case of unexpected prominent TP toward the intracranial space 5 years after endoscopic endonasal transsphenoidal surgery (EETS) for a nonfunctioning pituitary adenoma. In addition, we present a hypothesis of the underlying mechanism by a pressure gradient change between the extracranial and intracranial space in TP formation...
December 27, 2017: Laryngoscope
T A Aleksanyan
The objective of the present work was to evaluate the effectiveness of rhinoplasty performed in the combination with the correction of the intranasal structures. The study included the comparison of intra- and post-operative characteristics of rhinoplasty carried out with and without correction of the intranasal structures in 374 patients presenting with the combination of pathology of the nasal cavity and disfigurement of the shape of the nose. It was shown that the simultaneous surgical interventions are not accompanied by a significant increase in the frequency of intra- and post-operative complications in comparison with rhinoplastic surgery alone; nor do they require additional time expenditures...
2017: Vestnik Otorinolaringologii
Toshio Osada, Kiichi Kamoda, Masanori Mitome, Toru Hara, Taichi Abe, Yuki Tamagawa, Wataru Nakao, Takahito Ohmura
Self-crack-healing by oxidation of a pre-incorporated healing agent is an essential property of high-temperature structural ceramics for components with stringent safety requirements, such as turbine blades in aircraft engines. Here, we report a new approach for a self-healing design containing a 3D network of a healing activator, based on insight gained by clarifying the healing mechanism. We demonstrate that addition of a small amount of an activator, typically doped MnO localised on the fracture path, selected by appropriate thermodynamic calculation significantly accelerates healing by >6,000 times and significantly lowers the required reaction temperature...
December 19, 2017: Scientific Reports
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