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https://www.readbyqxmd.com/read/28632614/images-in-anesthesiology-torus-palatinus-and-airway-management
#1
Jesse Aron, Stephen J Raithel, Andrew J Mannes
No abstract text is available yet for this article.
July 2017: Anesthesiology
https://www.readbyqxmd.com/read/28610218/two-new-brackish-water-species-of-i-macrostomum-i-platyhelminthes-%C3%A2-macrostomida-from-mangrove-wetland-in-southern-china
#2
Lei Wang, Fan Xin, Chu-Yu Fang, Y U Zhang, An-Tai Wang
In this paper, two new brackish-water species of Macrostomum (M. shenzhenensis n. sp. and M qiaochengensis n. sp.) collected from the artificial lake in Overseas Chinese Town mangrove wetland, are described based on the morphology of the penis stylet and on a molecular phylogenetic analysis. M. shenzhenensis n. sp. has an elongate, narrow stylet with torus-shaped distal wall thickening, while M. qiaochengensis n. sp. has a hook-like stylet with a pointed end. Both the 18S and 28S rDNA phylogenetic analyses of M shenzhenensis n...
June 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28599354/a-profile-of-auditory-responsive-neurons-in-the-larval-zebrafish-brain
#3
Gilles Vanwalleghem, Lucy A Heap, Ethan K Scott
Many features of auditory processing are conserved among vertebrates, but the degree to which these pathways are established at early stages is not well explored. In this study, we have observed single cell activity throughout the brains of larval zebrafish with the goal of identifying the cellular responses, brain regions, and brain-wide pathways through which these larvae perceive and process auditory stimuli. Using GCaMP and selective plane illumination microscopy, we find strong responses to auditory tones ranging from 100 to 400Hz...
June 9, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28577371/prevalence-of-torus-mandibularis-in-young-healthy-dentate-adults
#4
Koji Morita, Hiroki Tsuka, Tomoaki Shintani, Mitsuyoshi Yoshida, Hidemi Kurihara, Kazuhiro Tsuga
PURPOSE: There have been only a few reports on the prevalence of torus mandibularis (TM) in young adult patients, and TM can have various adverse effects on oral and occlusal states in middle-age patients. This study was designed to determine the association between TM status and oral and occlusal states in young healthy dentate adults. MATERIALS AND METHODS: This was a cross-sectional study; the sample population included students at Hiroshima University (Hiroshima, Japan) who participated for practical education...
May 10, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28556539/simple-rapid-and-environmentally-friendly-method-for-the-separation-of-isoflavones-using-ultra-high-performance-supercritical-fluid-chromatography
#5
Wenjie Wu, Yuan Zhang, Hanqiu Wu, Weie Zhou, Yan Cheng, Hongna Li, Chuanbin Zhang, Lulu Li, Ying Huang, Feng Zhang
Isoflavones are natural substances that exhibit hormone-like pharmacological activities. The separation of isoflavones remains an analytical challenge because of their similar structures. We show that ultra-high performance supercritical fluid chromatography can be an appropriate tool to achieve the fast separation of 12 common dietary isoflavones. Among the five tested columns the Torus DEA column was found to be the most effective column for the separation of these isoflavones. The impact of individual parameters on the retention time and separation factor was evaluated...
May 27, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28535051/structural-properties-of-nonionic-monorhamnolipid-aggregates-in-water-studied-by-classical-molecular-dynamics-simulations
#6
Elango Munusamy, Charles M Luft, Jeanne E Pemberton, Steven D Schwartz
Molecular dynamics simulations were carried out to investigate the structure and stabilizing factors of aggregates of the nonionic form of the most common congener of monorhamnolipids, α-rhamnopyranosyl-β-hydroxydecanoyl-β-hydroxydecanoate (Rha-C10-C10), in water. Aggregates of size ranging from 5 to 810 monomers were observed in the simulation forming spherical and ellipsoidal structures, a torus-like structure, and a unilamellar vesicle. The effects of the hydrophobic chain conformation and alignment in the aggregate, role of monomer···monomer and monomer···water H-bonds, and conformations of monomers in the aggregate were studied in detail...
June 15, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28528920/torus-mandibularis
#7
Tanay Chaubal, Ranjeet Bapat, Kartik Poonja
No abstract text is available yet for this article.
May 18, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28527466/highly-excited-electronic-image-states-of-metallic-nanorings
#8
Christian Fey, Henrik Jabusch, Johannes Knörzer, Peter Schmelcher
We study electronic image states around a metallic nanoring and show that the interplay between the attractive polarization force and a repulsive centrifugal force gives rise to Rydberg-like image states trapped several nanometers away from the surface. The nanoring is modeled as a perfectly conducting isolated torus whose classical electrostatic image potential is derived analytically. The image states are computed via a two-dimensional finite-difference scheme as solutions of the effective Schrödinger equation describing the outer electron subject to this image potential...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28505815/interaction-of-toroidal-swimmers-in-stokes-flow
#9
Jianjun Huang, Lisa Fauci
A doughnut-shaped object supporting surface rotations was a hypothetical construct proposed by both Taylor and Purcell as a swimmer that would be able to propel itself in a Stokesian fluid because of the irreversibility of its stroke. Here we numerically examine the hydrodynamic interaction of pairs and trios of these free toroidal swimmers. First, we study the axisymmetric case of two toroidal swimmers placed in tandem, and show that a single torus of a corotating pair is more efficient than when it swims alone, but less efficient when paired with a counterrotating partner...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28505771/counterexamples-to-moffatt-s-statements-on-vortex-knots
#10
Oleg Bogoyavlenskij
One of the well-known problems of hydrodynamics is studied: the problem of classification of vortex knots for ideal fluid flows. In the literature there are known Moffatt statements that all torus knots K_{m,n} for all rational numbers m/n (0<m/n<∞) are realized as vortex knots for each one of the considered axisymmetric fluid flows. We prove that actually such a uniformity does not exist because it does not correspond to the facts. Namely, we derive a complete classification of all vortex knots realized for the fluid flows studied by Moffatt and demonstrate that the real structure of vortex knots is much more rich because the sets of mutually nonisotopic vortex knots realized for different axisymmetric fluid flows are all different...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28505281/application-of-partially-substituted-3-5-dimethylphenylcarbamate-3-2-o-%C3%AE-cyclodextrin-2-hydroxypropoxy-propylsilyl-appended-silica-particles-as-chiral-stationary-phase-for-multi-mode-high-performance-liquid-chromatography
#11
Mingxuan Ma, Qunli Wei, Min Meng, Jiale Yin, Lei Du, Xia Zhu, Mengjun Min, Xueyan Zhou, Xiaoxing Yin, Yinhan Gong
A new type of partially substituted 3,5-dimethylphenylcarbamate-(3-(2-O-β-cyclodextrin)-2-hydroxypropoxy)-propylsilyl-appended silica particles (MP-CD-HPS) have been prepared by a convenient post-immobilization derivazition procedure. The MP-CD-HPS has been successfully used as chiral stationary phase (CSP) for high-performance liquid chromatography (HPLC) under normal phase, reversed phase and polar organic mobile phase conditions. The chromatographic evaluation results show that the MP-CD-HPS has excellent selectivity for the separation of aromatic positional isomers and enantiomers of some chiral compounds...
May 13, 2017: Journal of Chromatographic Science
https://www.readbyqxmd.com/read/28503274/is-it-as-dangerous-as-it-looks
#12
N H Che Ibrahim, N Md Shukri
A common bony protrusion that occurs over the hard palate is sometimes mistaken for a malignancy especially when it is large. This bony growth is a torus palatinus (TP), which is a benign bony prominence over the hard palate. It occurs most commonly in bilateral multiple form, and is often located at the canine to premolar area. A basic knowledge of the assessment and management of TP is important, particularly for the first-line family physician to ensure that the correct information is given to the patient...
2017: Malaysian Family Physician
https://www.readbyqxmd.com/read/28463945/epidemiology-of-fractures-in-children-younger-than-12-months
#13
Diana Rodà, Victoria Trenchs, Ana Isabel Curcoy, Anibal Dolores Martínez, Jordi Pou, Carles Luaces
OBJECTIVES: The aim of this study is to determine the prevalence and characteristics of fractures in young infants attended at the pediatric emergency department (PED). METHODS: This is a retrospective study for 2 years (2011-2012) of children younger than 12 months attended with a fracture at the PED. Age, sex, site and type of fracture, mechanism of injury, time interval before seeking medical attention, and management were analyzed. RESULTS: One hundred one patients were included...
May 1, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28453724/a-generative-angular-model-of-protein-structure-evolution
#14
Michael Golden, Eduardo Garcia-Portugues, Michael Sørensen, Kanti V Mardia, Thomas Hamelryck, Jotun Hein
Recently described stochastic models of protein evolution have demonstrated that the inclusion of structural information in addition to amino acid sequences leads to a more reliable estimation of evolutionary parameters. We present a generative, evolutionary model of protein structure and sequence that is valid on a local length scale. The model concerns the local dependencies between sequence and structure evolution in a pair of homologous proteins. The evolutionary trajectory between the two structures in the protein pair is treated as a random walk in dihedral angle space, which is modeled using a novel angular diffusion process on the two-dimensional torus...
April 27, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28452934/a-genetic-algorithm-for-the-generation-of-packetization-masks-for-robust-image-communication
#15
Katherine Zapata-Quiñones, Cristian Duran-Faundez, Gilberto Gutiérrez, Vincent Lecuire, Christopher Arredondo-Flores, Hugo Jara-Lipán
Image interleaving has proven to be an effective solution to provide the robustness of image communication systems when resource limitations make reliable protocols unsuitable (e.g., in wireless camera sensor networks); however, the search for optimal interleaving patterns is scarcely tackled in the literature. In 2008, Rombaut et al. presented an interesting approach introducing a packetization mask generator based in Simulated Annealing (SA), including a cost function, which allows assessing the suitability of a packetization pattern, avoiding extensive simulations...
April 28, 2017: Sensors
https://www.readbyqxmd.com/read/28448401/clinical-significance-of-incidentally-detected-torus-tubarius-calcification
#16
Karen Buch, Rohini N Nadgir, Muhammad Mustafa Qureshi, Al Ozonoff, Osamu Sakai
OBJECTIVES: Calcification of the torus tubarius has been rarely reported in the literature. Histopathologic studies have previously described cases of Eustachian tube calcification and cite an association with increasing patient age. The purpose of this study was to examine the prevalence of torus tubarius calcification and potential clinical significance on an unrestricted patient population using thin-section computed tomography (CT), which has not been previously reported. METHODS: After the institutional review board approval, 1571 consecutive patients who underwent noncontrast head CT between January 2011 and July 2011 were retrospectively reviewed for torus tubarius calcification...
April 26, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28447632/a-universal-model-for-solar-eruptions
#17
Peter F Wyper, Spiro K Antiochos, C Richard DeVore
Magnetically driven eruptions on the Sun, from stellar-scale coronal mass ejections to small-scale coronal X-ray and extreme-ultraviolet jets, have frequently been observed to involve the ejection of the highly stressed magnetic flux of a filament. Theoretically, these two phenomena have been thought to arise through very different mechanisms: coronal mass ejections from an ideal (non-dissipative) process, whereby the energy release does not require a change in the magnetic topology, as in the kink or torus instability; and coronal jets from a resistive process involving magnetic reconnection...
April 26, 2017: Nature
https://www.readbyqxmd.com/read/28435207/simultaneous-feedback-control-of-plasma-rotation-and-stored-energy-on-nstx-u-using-neoclassical-toroidal-viscosity-and-neutral-beam-injection
#18
I R Goumiri, C W Rowley, S A Sabbagh, D A Gates, M D Boyer, S P Gerhardt, E Kolemen, J E Menard
A model-based feedback system is presented enabling the simultaneous control of the stored energy through βn and the toroidal rotation profile of the plasma in National Spherical Torus eXperiment Upgrade device. Actuation is obtained using the momentum from six injected neutral beams and the neoclassical toroidal viscosity generated by applying three-dimensional magnetic fields. Based on a model of the momentum diffusion and torque balance, a feedback controller is designed and tested in closed-loop simulations using TRANSP, a time dependent transport analysis code, in predictive mode...
May 2017: Physics of Plasmas
https://www.readbyqxmd.com/read/28424606/bifurcation-analysis-on-phase-amplitude-cross-frequency-coupling-in-neural-networks-with-dynamic-synapses
#19
Takumi Sase, Yuichi Katori, Motomasa Komuro, Kazuyuki Aihara
We investigate a discrete-time network model composed of excitatory and inhibitory neurons and dynamic synapses with the aim at revealing dynamical properties behind oscillatory phenomena possibly related to brain functions. We use a stochastic neural network model to derive the corresponding macroscopic mean field dynamics, and subsequently analyze the dynamical properties of the network. In addition to slow and fast oscillations arising from excitatory and inhibitory networks, respectively, we show that the interaction between these two networks generates phase-amplitude cross-frequency coupling (CFC), in which multiple different frequency components coexist and the amplitude of the fast oscillation is modulated by the phase of the slow oscillation...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28415297/toroidal-droplet-instabilities-in-the-presence-of-charge
#20
Alexandros A Fragkopoulos, Alberto Fernández-Nieves
Neutral toroidal droplets can break via the surface-tension-driven Rayleigh-Plateau instability. They can additionally exhibit a shrinking instability, which is also driven by surface tension, whereby the handle progressively disappears. We find that charging a toroidal droplet can qualitatively change the behavior and cause the droplet to expand. We successfully model the transition from shrinking to expanding, considering the pressure balance across the interface of the torus. However, despite the change in behavior, charged toroidal droplets end up breaking into spherical droplets...
March 2017: Physical Review. E
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