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https://www.readbyqxmd.com/read/29776141/probing-a-dusty-magnetized-plasma-with-self-excited-dust-density-waves
#1
Benjamin Tadsen, Franko Greiner, Alexander Piel
A cloud of nanodust particles is created in a reactive argon-acetylene plasma. It is then transformed into a dusty magnetized argon plasma. Plasma parameters are obtained with the dust-density wave diagnostic introduced by Tadsen et al. [Phys. Plasmas 22, 113701 (2015)10.1063/1.4934927]. A change from an open to a cylindrically enclosed nanodust cloud, which was observed earlier, can now be explained by a stronger electric confinement if a vertical magnetic field is present. Using two-dimensional extinction measurements and the inverse Abel transform to determine the dust density, a redistribution of the dust with increasing magnetic induction is found...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29776076/complex-network-view-of-evolving-manifolds
#2
Diamantino C da Silva, Ginestra Bianconi, Rui A da Costa, Sergey N Dorogovtsev, José F F Mendes
We study complex networks formed by triangulations and higher-dimensional simplicial complexes representing closed evolving manifolds. In particular, for triangulations, the set of possible transformations of these networks is restricted by the condition that at each step, all the faces must be triangles. Stochastic application of these operations leads to random networks with different architectures. We perform extensive numerical simulations and explore the geometries of growing and equilibrium complex networks generated by these transformations and their local structural properties...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29766474/masses-of-developmental-and-genetic-origin-affecting-the-paediatric-craniofacial-skeleton
#3
REVIEW
Salvatore Stefanelli, Pravin Mundada, Anne-Laure Rougemont, Vincent Lenoir, Paolo Scolozzi, Laura Merlini, Minerva Becker
Although rare, masses and mass-like lesions of developmental and genetic origin may affect the paediatric craniofacial skeleton. They represent a major challenge in clinical practice because they can lead to functional impairment, facial deformation and disfigurement. The most common lesions include fibrous dysplasia, dermoid cysts, vascular malformations and plexiform neurofibromas. Less common lesions include torus mandibularis and torus palatinus, cherubism, nevoid basal cell carcinoma syndrome, meningoencephalocele and nasal sinus tract...
May 15, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29758624/one-dimensional-reduction-of-viscous-jets-ii-applications
#4
Cyril Pitrou
In a companion paper [Phys. Rev. E 97, 043115 (2018)10.1103/PhysRevE.97.043115], a formalism allowing to describe viscous fibers as one-dimensional objects was developed. We apply it to the special case of a viscous fluid torus. This allows to highlight the differences with the basic viscous string model and with its viscous rod model extension. In particular, an elliptic deformation of the torus section appears because of surface tension effects, and this cannot be described by viscous string nor viscous rod models...
April 2018: Physical Review. E
https://www.readbyqxmd.com/read/29747473/supercritical-fluid-chromatography-with-photodiode-array-detection-in-the-determination-of-fat-soluble-vitamins-in-hemp-seed-oil-and-waste-fish-oil
#5
Katarzyna Tyśkiewicz, Roman Gieysztor, Izabela Maziarczyk, Paweł Hodurek, Edward Rój, Krystyna Skalicka-Woźniak
In the presented study for the first time a new, optimized, fast SFC (supercritical fluid chromatography) method was applied to separate in one run fat-soluble vitamins from waste fish oil, including cis -and tran s-retinyl palmitate, cis - and trans -retinyl acetate, retinol, α-tocopherol, β-tocopherol, γ‑tocopherol, δ-tocopherol, ergocalciferol (D₂), cholecalciferol (D₃), cis - and trans -phylloquinone (K₁) and menaquinone-4 (K₂-MK4). Vitamins were baseline separated on an Acquity UPC² (ultra performance convergence chromatography) HSS C18 SB (highly strength chemically modified silica) column within 13 min...
May 10, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29724968/surface-embeddings-of-the-klein-and-the-m%C3%A3-bius-kantor-graphs
#6
Martin Cramer Pedersen, Olaf Delgado-Friedrichs, Stephen T Hyde
This paper describes an invariant representation for finite graphs embedded on orientable tori of arbitrary genus, with working examples of embeddings of the Möbius-Kantor graph on the torus, the genus-2 bitorus and the genus-3 tritorus, as well as the two-dimensional, 7-valent Klein graph on the tritorus (and its dual: the 3-valent Klein graph). The genus-2 and -3 embeddings describe quotient graphs of 2- and 3-periodic reticulations of hyperbolic surfaces. This invariant is used to identify infinite nets related to the Möbius-Kantor and 7-valent Klein graphs...
May 1, 2018: Acta Crystallographica. Section A, Foundations and Advances
https://www.readbyqxmd.com/read/29716310/sub-millisecond-electron-density-profile-measurement-at-the-jet-tokamak-with-the-fast-lithium-beam-emission-spectroscopy-system
#7
D I Réfy, M Brix, R Gomes, B Tál, S Zoletnik, D Dunai, G Kocsis, S Kálvin, T Szabolics
Diagnostic alkali atom (e.g., lithium) beams are routinely used to diagnose magnetically confined plasmas, namely, to measure the plasma electron density profile in the edge and the scrape off layer region. A light splitting optics system was installed into the observation system of the lithium beam emission spectroscopy diagnostic at the Joint European Torus (JET) tokamak, which allows simultaneous measurement of the beam light emission with a spectrometer and a fast avalanche photodiode (APD) camera. The spectrometer measurement allows density profile reconstruction with ∼10 ms time resolution, absolute position calculation from the Doppler shift, spectral background subtraction as well as relative intensity calibration of the channels for each discharge...
April 2018: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29710409/papillary-architecture-and-functional-characterization-of-mucosubstances-in-the-sheep-tongue
#8
Serkan Erdoğan, Hakan Sağsöz
This research aimed to reveal the general morphology and topographic distribution of lingual papillae, epithelial characteristics, mucosal structure, and glands with their mucin content in the sheep tongue, with consideration of species-specific characteristics. The tongues of ten sheep were analyzed for this purpose. Filiform and fungiform papillae existed within the borders of the ventral surface of the lingual apex. The majority of the filiform papillae had multiple secondary projections. Fungiform papillae were also seen on the lingual torus among lenticular papillae, as well as 6 to 10 circumvallate papillae arranged on its caudal border...
April 30, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29707050/buckling-down-on-torus-fractures-has-evolving-evidence-affected-practice
#9
B A Williams, C A Alvarado, D C Montoya-Williams, R C Matthias, L C Blakemore
Purpose: The purpose of this study was to evaluate the management of paediatric torus fractures of the distal forearm in current practice in light of growing evidence supporting a 'minimalist' approach with splint immobilization and limited follow-up. We hypothesized that 'traditional' cast-based management has persisted despite alternative evidence. Methods: A retrospective review was performed of a consecutive series of paediatric patients diagnosed with torus fractures of the distal forearm between 2011 and 2014...
April 1, 2018: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/29699870/quantitative-determination-of-major-alkaloids-in-cinchona-bark-by-supercritical-fluid-chromatography
#10
Adele Murauer, Markus Ganzera
Chinoline alkaloids found in Cinchona bark still play an important role in medicine, for example as antimalarial and antiarrhythmic drugs. For the first time Supercritical Fluid Chromatography has been utilized for their separation. Six respective derivatives (dihydroquinidine, dihydroquinine, quinidine, quinine, cinchonine and cinchonidine) could be resolved in less than 7 min, and three of them quantified in crude plant extracts. The optimum stationary phase showed to be an Acquity UPC2 Torus DEA 1.7 μm column, the mobile phase comprised of CO2 , acetonitrile, methanol and diethylamine...
April 18, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29686900/are-unnecessary-serial-radiographs-being-ordered-in-children-with-distal-radius-buckle-fractures
#11
Shi-Neng James Ling, Aidan J Cleary
Background. Torus or buckle distal radius fractures are common injuries in the pediatric population. By definition, they are stable and can be treated conservatively with a wrist splint or soft crepe bandage. Objective. The objective of this study was to evaluate the utility of serial radiographs in the clinical outcome of children with stable distal radius buckle fractures. Materials and Methods. A one-month retrospective analysis was undertaken at two major hospitals in Queensland-Logan and Redlands Hospital...
2018: Radiology Research and Practice
https://www.readbyqxmd.com/read/29660246/cyclic-band-compression-in-toroidal-capillary-electrophoresis-delivers-an-unlimited-number-of-theoretical-plates-with-a-quadratic-growth-in-time-and-a-constant-peak-capacity
#12
Tarso B Ledur Kist
Analytical instruments able to provide extremely high sensitivities, separation efficiencies and peak capacities are important for both applied sciences and basic research. It is even more interesting if this can be achieved within organic, aqueous and including physiological solutions, without restricting the operation parameters; such as buffer pH, temperature, ionic strength and background electrolyte composition. Toroidal capillary electrophoresis offers this potential, as was recently proposed and demonstrated...
April 16, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29627266/fast-cheater-migration-stabilizes-coexistence-in-a-public-goods-dilemma-on-networks
#13
Glenn Young, Andrew Belmonte
Through the lens of game theory, cooperation is frequently considered an unsustainable strategy: if an entire population is cooperating, each individual can increase its overall fitness by choosing not to cooperate, thereby still receiving all the benefit of its cooperating neighbors while no longer expending its own energy. Observable cooperation in naturally-occurring public goods games is consequently of great interest, as such systems offer insight into both the emergence and sustainability of cooperation...
April 5, 2018: Theoretical Population Biology
https://www.readbyqxmd.com/read/29597197/brain-activation-patterns-in-response-to-conspecific-and-heterospecific-social-acoustic-signals-in-female-plainfin-midshipman-fish-porichthys-notatus
#14
Robert A Mohr, Yiran Chang, Ashwin A Bhandiwad, Paul M Forlano, Joseph A Sisneros
While the peripheral auditory system of fish has been well studied, less is known about how the fish's brain and central auditory system process complex social acoustic signals. The plainfin midshipman fish, Porichthys notatus, has become a good species for investigating the neural basis of acoustic communication because the production and reception of acoustic signals is paramount for this species' reproductive success. Nesting males produce long-duration advertisement calls that females detect and localize among the noise in the intertidal zone to successfully find mates and spawn...
March 29, 2018: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/29588100/systematic-profiling-and-comparison-of-the-lipidomes-from-panax-ginseng-p-quinquefolius-and-p-notoginseng-by-ultrahigh-performance-supercritical-fluid-chromatography-high-resolution-mass-spectrometry-and-ion-mobility-derived-collision-cross-section-measurement
#15
Xiaojian Shi, Wenzhi Yang, Shi Qiu, Jinjun Hou, Wanying Wu, Dean Guo
Lipidomics currently is still confronted with challenges from chromatographic separation and lipids identification. Here we report a lipidomics platform by integrating ultrahigh performance supercritical fluid chromatography/quadrupole time-of-flight mass spectrometry (UHPSFC/QTOF-MS) and collision cross section (CCS) measurement using ion mobility spectroscopy/time-of-flight mass spectrometry (IMS/QTOF-MS), aiming to enhance the profiling performance and identification reliability of lipids. The lipidomes extracted from three congeneric Panax species (P...
March 14, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29576266/exploring-lipid-markers-of-the-quality-of-coix-seeds-with-different-geographical-origins-using-supercritical-fluid-chromatography-mass-spectrometry-and-chemometrics
#16
Jin-Jun Hou, Chun-Mei Cao, Yong-Wei Xu, Shuai Yao, Lu-Ying Cai, Hua-Li Long, Qi-Rui Bi, Yuan-Yuan Zhen, Wan-Ying Wu, De-An Guo
BACKGROUND: Lipids, a group of primary metabolites, could be used as quality markers of Traditional Chinese medicine. PURPOSE: The present study was designed to develop a research method to explore lipid markers of the quality of coix seeds with different geographical origins. STUDY DESIGN: The geographical origins of coix seeds were divided into three regions based on the latitude. A central composite design (CCD test) was used to optimize the chromatographic parameters of supercritical fluid chromatography to obtain optimal lipid profile of coix seed...
March 7, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/29570337/millimeter-wave-beam-scattering-by-field-aligned-blobs-in-simple-magnetized-toroidal-plasmas
#17
O Chellaï, S Alberti, M Baquero-Ruiz, I Furno, T Goodman, F Manke, G Plyushchev, L Guidi, A Koehn, O Maj, E Poli, K Hizanidis, L Figini, D Ricci
The first direct experimental measurements of the scattering of a millimeter-wave beam by plasma blobs in a simple magnetized torus are reported. The wavelength of the beam is comparable to the characteristic size of the blob. In situ Langmuir probe measurements show that fluctuations of the electron density induce correlated fluctuations of the transmitted power. A first-principles full-wave model, using conditionally sampled 2D electron density profiles, predicts fluctuations of the millimeter-wave power that are in agreement with experiments...
March 9, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29548156/path-integral-monte-carlo-simulation-of-time-reversal-noninvariant-bulk-systems-with-a-case-study-of-rotating-yukawa-gases
#18
Tamás Haidekker Galambos, Csaba Tőke
We elaborate on the methodology to simulate bulk systems in the absence of time-reversal symmetry by the phase-fixed path-integral Monte Carlo method under (possibly twisted) periodic boundary conditions. Such systems include two-dimensional electrons in the quantum Hall regime and rotating ultracold Bose and Fermi gases; time-reversal symmetry is broken by an external magnetic field and the Coriolis force, respectively. We provide closed-form expressions in terms of Jacobi elliptic functions for the thermal density matrix (or the Euclidean propagator) of a single particle on a flat torus under very general conditions...
February 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448905/restoration-of-sleep-using-a-novel-biomimetic-protocol-for-adult-osa-clinical-case-report
#19
G Dave Singh, Mark Kraver, Oleg Chernyshev
Background A sleep study of a 56-year old male with excessive daytime sleepiness demonstrated an AHI of 16.4hr-1 with 13% of total sleep time in REM sleep and a mean oxygen desaturation (SpO2 ) of 86%. Clinical presentation On intra-oral examination, it was found that the patient had maxillary hypoplasia and bilateral torus mandibularis. A 3D cone-beam CT (CBCT) scan was taken, and 28 craniofacial parameters were measured. Surgical reduction of the mandibular tori followed by biomimetic oral appliance therapy (BOAT) was initiated...
February 15, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29376681/sign-switch-of-gaussian-bending-modulus-for-microemulsions-a-self-consistent-field-analysis-exploring-scale-invariant-curvature-energies
#20
Ramanathan Varadharajan, Frans A M Leermakers
Bending rigidities of tensionless balanced liquid-liquid interfaces as occurring in microemulsions are predicted using self-consistent field theory for molecularly inhomogeneous systems. Considering geometries with scale invariant curvature energies gives unambiguous bending rigidities for systems with fixed chemical potentials: the minimal surface Im3m cubic phase is used to find the Gaussian bending rigidity κ[over ¯], and a torus with Willmore energy W=2π^{2} allows for direct evaluation of the mean bending modulus κ...
January 12, 2018: Physical Review Letters
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