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https://www.readbyqxmd.com/read/28719961/artyfechinostomum-malayanum-metacercariae-encysted-in-pila-sp-snails-purchased-from-phnom-penh-cambodia
#1
Woon-Mok Sohn, Tai-Soon Yong, Keeseon S Eom, Muth Sinuon, Hoo-Gn Jeoung, Jong-Yil Chai
The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145-165 μm in diameter, having a cyst wall of 6-10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28717592/epas1-variants-in-high-altitude-tibetan-wolves-were-selectively-introgressed-into-highland-dogs
#2
Bridgett vonHoldt, Zhenxin Fan, Diego Ortega-Del Vecchyo, Robert K Wayne
BACKGROUND: Admixture can facilitate adaptation. For example, black wolves have obtained the variant causing black coat color through past hybridization with domestic dogs and have higher fitness than gray colored wolves. Another recent example of the transfer of adaptive variation between the two species has been suggested by the similarity between high altitude Tibetan mastiffs and wolves at the EPAS1 gene, a transcription factor induced in low oxygen environments. METHODS: Here, we investigate the directionality of admixture in EPAS1 between 28 reference highland gray wolves, 15 reference domestic dogs, and 21 putatively admixed highland wolves...
2017: PeerJ
https://www.readbyqxmd.com/read/28712635/efficacy-of-xp-endo-finisher-in-the-removal-of-triple-antibiotic-paste-from-immature-root-canals
#3
Dilek Turkaydin, Erhan Demir, Fatima Betul Basturk, Hesna Sazak Övecoglu
INTRODUCTION: The aim of this study was to evaluate and compare the effectiveness of the XP-Endo Finisher (FKG Dentaire, La Chaux-de-Fonds, Switzerland) with passive ultrasonic irrigation (PUI) and needle irrigation in the removal of triple antibiotic paste (TAP) from the straight immature root canals of extracted teeth. METHODS: Thirty-four freshly extracted single-rooted teeth were used. All canals were prepared up to the ProTaper F5 file (Dentsply Maillefer, Ballaigues, Switzerland)...
July 13, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28711188/plan-delivery-quality-assurance-for-cyberknife-statistical-process-control-analysis-of-350-film-based-patient-specific-qas
#4
J Bellec, N Delaby, F Jouyaux, M Perdrieux, J Bouvier, S Sorel, O Henry, C Lafond
PURPOSE: Robotic radiosurgery requires plan delivery quality assurance (DQA) but there has never been a published comprehensive analysis of a patient-specific DQA process in a clinic. We proposed to evaluate 350 consecutive film-based patient-specific DQAs using statistical process control. We evaluated the performance of the process to propose achievable tolerance criteria for DQA validation and we sought to identify suboptimal DQA using control charts. METHODS AND MATERIAL: DQAs were performed on a CyberKnife-M6 using Gafchromic-EBT3 films...
July 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28710653/mechanical-performance-of-cement-and-screw-retained-all-ceramic-single-crowns-on-dental-implants
#5
Matthias Obermeier, Oliver Ristow, Kurt Erdelt, Florian Beuer
OBJECTIVES: This in-vitro study was performed to compare the contact wear, fracture strength and failure mode of implant-supported all-ceramic single crowns manufactured with various fabrication and fixation concepts. MATERIALS AND METHODS: Fifty dental implants (Conelog Ø 4,3mm/L11mm, Camlog Biotechnologies AG) were embedded and treated with all-ceramic molar single-crowns. Three groups received hand-layered zirconia crowns (IPS e.max Ceram/ IPS e.max ZirCAD, Ivoclar Vivadent AG): CZL (cement-retained zirconia-based layered) group crowns were cemented conventionally, SZL (screw-retained zirconia-based layered) group crowns were screw-retained, MZL (modified zirconia-based layered) group crowns showed a different coping design with screw retention...
July 15, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28708157/complex-decorrelation-averaging-in-optical-coherence-tomography-a-way-to-reduce-the-effect-of-multiple-scattering-and-improve-image-contrast-in-a-dynamic-scattering-medium
#6
Lars Thrane, Shi Gu, Brecken J Blackburn, Kishore V Damodaran, Andrew M Rollins, Michael W Jenkins
We demonstrate that complex decorrelation averaging can reduce the effect of multiple scattering and improve optical coherence tomography (OCT) imaging contrast. Complex decorrelation averaging calculates the product of an A-scan and the complex conjugate of a subsequent A-scan. The resultant signal is the product of the amplitudes and the phase difference. All these resulting complex signals at a particular location are then averaged. We take advantage of the fact that complex averaging, in contrast to conventional magnitude averaging, is sensitive to phase decorrelation...
July 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28706560/experimental-realization-and-characterization-of-an-electronic-lieb-lattice
#7
Marlou R Slot, Thomas S Gardenier, Peter H Jacobse, Guido C P van Miert, Sander N Kempkes, Stephan J M Zevenhuizen, Cristiane Morais Smith, Daniel Vanmaekelbergh, Ingmar Swart
Geometry, whether on the atomic or nanoscale, is a key factor for the electronic band structure of materials. Some specific geometries give rise to novel and potentially useful electronic bands. For example, a honeycomb lattice leads to Dirac-type bands where the charge carriers behave as massless particles [1]. Theoretical predictions are triggering the exploration of novel 2D geometries [2-10], such as graphynes, Kagomé and the Lieb lattice. The latter is the 2D analogue of the 3D lattice exhibited by perovskites [2]; it is a square-depleted lattice, which is characterised by a band structure featuring Dirac cones intersected by a flat band...
July 2017: Nature Physics
https://www.readbyqxmd.com/read/28705808/molecular-basis-of-altered-herg1-channel-gating-induced-by-ginsenoside-rg3
#8
Alison Gardner, Wei Wu, Steven Thomson, Eva-Maria Zangerl-Plessl, Anna Stary-Weinzinger, Michael Sanguinetti
Outward current conducted by human ether-a-g-go-related gene type 1 (hERG1) channels is a major determinant of action potential repolarization in the human ventricle. Ginsenoside 20(S)-Rg3 (Rg3), an alkaloid isolated from the root of Panax ginseng slows the rate of hERG1 deactivation, induces channels to open at more negative potentials than normal and increases current magnitude. The onset of Rg3 action is extremely fast, suggesting that it binds to an extracellular accessible site on the channel to alter its gating...
July 13, 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/28704321/observation-of-retrocorneal-plaques-in-patients-with-infectious-keratitis-using-anterior-segment-optical-coherence-tomography
#9
Yuki Takezawa, Takashi Suzuki, Atsushi Shiraishi
PURPOSE: Endothelial plaques are a typical characteristic in patients with fungal keratitis. However, bacterial keratitis and herpetic keratouveitis are rarely associated with fibrin formation on the retrocorneal surface. This study was conducted to examine plaques attached to the endothelium in patients with infectious keratitis using anterior segment optical coherence tomography (AS-OCT). METHODS: Seventeen patients (10 women and 7 men; mean age, 75 ± 15.5 years) suspected to have infectious keratitis with retrocorneal plaques were included...
July 11, 2017: Cornea
https://www.readbyqxmd.com/read/28699164/novel-amino-acid-based-surfactant-for-silicone-emulsification-and-its-application-in-hair-care-products-a-promising-alternative-to-quaternary-ammonium-cationic-surfactants
#10
Mika Fujii, Motoki Inoue, Toshiro Fukami
OBJECTIVE: Quaternary ammonium cationic surfactants (ACSs) and N-[3-alkyl(12,14)oxy-2-hydroxypropyl]-L-arginine hydrochloride (N-AOHPA) were used to emulsify silicone. The potential of the resulting emulsions in hair conditioning products was investigated. METHODS: The emulsions were prepared using a homogenizer and/or high-pressure homogenizer. ACSs and N-AOHPA were used as silicone emulsifiers. The stability of the emulsions were evaluated by measuring particle sizes, creaming fractions, polydispersity indexes and zeta potentials...
July 12, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28696426/an-imaging-dataset-of-cervical-cells-using-scanning-near-field-optical-microscopy-coupled-to-an-infrared-free-electron-laser
#11
Diane E Halliwell, Camilo L M Morais, Kássio M G Lima, Júlio Trevisan, Michele R F Siggel-King, Tim Craig, James Ingham, David S Martin, Kelly Heys, Maria Kyrgiou, Anita Mitra, Evangelos Paraskevaidis, Georgios Theophilou, Pierre L Martin-Hirsch, Antonio Cricenti, Marco Luce, Peter Weightman, Francis L Martin
Using a scanning near-field optical microscope coupled to an infrared free electron laser (SNOM-IR-FEL) in low-resolution transmission mode, we collected chemical data from whole cervical cells obtained from 5 pre-menopausal, non-pregnant women of reproductive age, and cytologically classified as normal or with different grades of cervical cell dyskaryosis. Imaging data are complemented by demography. All samples were collected before any treatment. Spectra were also collected using attenuated total reflection, Fourier-transform (ATR-FTIR) spectroscopy, to investigate the differences between the two techniques...
July 11, 2017: Scientific Data
https://www.readbyqxmd.com/read/28693319/controlled-generation-of-quantized-vortex-antivortex-pairs-in-a-superconducting-condensate
#12
Junyi Ge, Vladimir N Gladilin, Jacques Tempere, Jozef Devreese, Victor V Moshchalkov
Quantized vortices, as topological defects, play an important role in both physics and technological applications of superconductors. Normally, nucleation of vortices requires presence of high magnetic field or current density, which allow the vortices to enter from the sample boundaries. At the same time, controllable generation of individual vortices inside a superconductor is still challenging. Here, we report the controllable creation of single quantum vortices and antivortices at any desirable position inside a supercon- ductor...
July 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28690340/run-to-run-optimization-control-within-exact-inverse-framework-for-scan-tracking
#13
Ivan L Yeoh, Per G Reinhall, Martin C Berg, Howard J Chizeck, Eric J Seibel
A run-to-run optimization controller uses a reduced set of measurement parameters, in comparison to more general feedback controllers, to converge to the best control point for a repetitive process. A new run-to-run optimization controller is presented for the scanning fiber device used for image acquisition and display. This controller utilizes very sparse measurements to estimate a system energy measure and updates the input parameterizations iteratively within a feedforward with exact-inversion framework...
September 2017: Journal of Dynamic Systems, Measurement, and Control
https://www.readbyqxmd.com/read/28688352/inter-comparison-of-personal-monitors-for-nanoparticles-exposure-at-workplaces-and-in-the-environment
#14
Ana Maria Todea, Stefanie Beckmann, Heinz Kaminski, Delphine Bard, Sébastien Bau, Simon Clavaguera, Dirk Dahmann, Hélène Dozol, Nico Dziurowitz, Karine Elihn, Martin Fierz, Göran Lidén, Asmus Meyer-Plath, Christian Monz, Volker Neumann, Johannes Pelzer, Barbara Katrin Simonow, Patrick Thali, Ilse Tuinman, Arjan van der Vleuten, Huub Vroomen, Christof Asbach
Personal monitors based on unipolar diffusion charging (miniDiSC/DiSCmini, NanoTracer, Partector) can be used to assess the individual exposure to nanoparticles in different environments. The charge acquired by the aerosol particles is nearly proportional to the particle diameter and, by coincidence, also nearly proportional to the alveolar lung-deposited surface area (LDSA), the metric reported by all three instruments. In addition, the miniDiSC/DiSCmini and the NanoTracer report particle number concentration and mean particle size...
July 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28688180/effect-of-silver-diamine-fluoride-sdf-on-the-dentin-pulp-complex-ex-vivo-histological-analysis-on-human-primary-teeth-and-rat-molars
#15
Glenda Rossi, Aldo Squassi, Patricia Mandalunis, Andrea Kaplan
The aim of this study was to determine the effect of SDF on the dentin-pulp complex using two models: teeth after SDF application (ex vivo) and experimental animal molars. A descriptive study was performed using two models. In the first model, primary teeth (ex vivo) with enamel-dentin caries, without pulp involvement and previously treated with 38% SDF, were evaluated by means of two techniques: (a) Scanning Electron Microscopy (SEM) and energy-dispersive X-ray detector (EDS) to determine qualitative and quantitative composition, and (b) brightfield optical microscopy (OM) after decalcification...
April 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28687846/comparison-of-the-retinal-microvascular-density-between-open-angle-glaucoma-and-nonarteritic-anterior-ischemic-optic-neuropathy
#16
Chun-Hsiu Liu, Wei-Chi Wu, Ming-Hui Sun, Ling-Yuh Kao, Yung-Sung Lee, Henry Shen-Lih Chen
Purpose: To compare optical coherence tomography angiography (OCT-A) retinal vasculature measurements between nonarteritic anterior ischemic optic neuropathy (NAION) and open angle glaucoma (OAG) with altitudinal hemifield visual field defects. Methods: This retrospective cross-sectional study included 10 NAION eyes and 16 OAG eyes, both demonstrating hemifield visual field defects, and 27 normal eyes serving as controls. The peripapillary and macular OCT-A scans were acquired...
July 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28686634/similarity-measure-and-domain-adaptation-in-multiple-mixture-model-clustering-an-application-to-image-processing
#17
Siow Hoo Leong, Seng Huat Ong
This paper considers three crucial issues in processing scaled down image, the representation of partial image, similarity measure and domain adaptation. Two Gaussian mixture model based algorithms are proposed to effectively preserve image details and avoids image degradation. Multiple partial images are clustered separately through Gaussian mixture model clustering with a scan and select procedure to enhance the inclusion of small image details. The local image features, represented by maximum likelihood estimates of the mixture components, are classified by using the modified Bayes factor (MBF) as a similarity measure...
2017: PloS One
https://www.readbyqxmd.com/read/28685108/stable-au-c-bonds-to-the-substrate-for-fullerene-based-nanostructures
#18
Taras Chutora, Jesús Redondo, Bruno de la Torre, Martin Švec, Pavel Jelínek, Héctor Vázquez
We report on the formation of fullerene-derived nanostructures on Au(111) at room temperature and under UHV conditions. After low-energy ion sputtering of fullerene films deposited on Au(111), bright spots appear at the herringbone corner sites when measured using a scanning tunneling microscope. These features are stable at room temperature against diffusion on the surface. We carry out DFT calculations of fullerene molecules having one missing carbon atom to simulate the vacancies in the molecules resulting from the sputtering process...
2017: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/28682548/-polishing-performance-of-different-polishing-tools-for-cerec-blocs-ceramic
#19
Wang Tao, Guo Zhenwei, Guo Huijing, Qiao Xianghe
OBJECTIVE: This study aimed to compare the polishing performance of five different glass-ceramic polishing tools on CEREC Blocs ceramic and provide evidence for clinical polishing tool selection. METHODS: Sixty ceramic specimens were prepared and divided into six groups (n=10). These specimens received different surface treatments, including glazing (group G), polishing with Shofu polishing set, that is, Porcelain Adjustment Kit+CeraMaster (group SF), 3M Sof-LexTM Discs (group 3M), TobooM polishing set (group Tob), EVE DIAPRO system (group EVE), and Ivoclar Vivadent OptraFine® system (group Ivo)...
April 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28682381/porphyrin-aggregates-decorated-mwcnt-film-for-solar-light-harvesting-influence-of-j-and-h-aggregation-on-the-charge-recombination-resistance-photocatalysis-and-photoinduced-charge-transfer-kinetics
#20
Samrat Devaramani, Mahgoub Ibrahim Shinger, Xiaofang Ma, Meng Yao, Shouting Zhang, Dongdong Qin, Xiaoquan Lu
J- and H-aggregates of zinc tetraphenylporphyrin (ZnTPP) on carbon nanotube films (CNTFs) were prepared using the mixed solvent method. This resulted in completely different structures, such as the four-leaf clover and flower, on the CNTF, which were observed by recording SEM images. Characteristic changes in the electronic spectra of the ZnTPP monomer appeared when it underwent J- and H-aggregation. The measured photocurrent significantly varied for the same molecule when it was aggregated in two different ways on ITO and ITO/CNTF...
July 6, 2017: Physical Chemistry Chemical Physics: PCCP
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