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https://www.readbyqxmd.com/read/29341760/correlated-photon-dynamics-in-dissipative-rydberg-media
#1
Emil Zeuthen, Michael J Gullans, Mohammad F Maghrebi, Alexey V Gorshkov
Rydberg blockade physics in optically dense atomic media under the conditions of electromagnetically induced transparency (EIT) leads to strong dissipative interactions between single photons. We introduce a new approach to analyzing this challenging many-body problem in the limit of a large optical depth per blockade radius. In our approach, we separate the single-polariton EIT physics from Rydberg-Rydberg interactions in a serialized manner while using a hard-sphere model for the latter, thus capturing the dualistic particle-wave nature of light as it manifests itself in dissipative Rydberg-EIT media...
July 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29341375/transparency-enhancing-technology-allows-three-dimensional-assessment-of-gastrointestinal-mucosa-a-porcine-model
#2
Hiroya Mizutani, Satoshi Ono, Tetsuo Ushiku, Yotaro Kudo, Masako Ikemura, Natsuko Kageyama, Nobutake Yamamichi, Mitsuhiro Fujishiro, Takao Someya, Masashi Fukayama, Kazuhiko Koike, Hiroshi Onodera
Although high-resolution three-dimensional imaging of endoscopically resected gastrointestinal specimens can help elucidating morphological features of gastrointestinal mucosa or tumor, there are no established methods to achieve this without breaking specimens apart. We evaluated the utility of transparency-enhancing technology for three-dimensional assessment of gastrointestinal mucosa in porcine models. Esophagus, stomach, and colon mucosa samples obtained from a sacrificed swine were formalin-fixed and paraffin-embedded, and subsequently deparaffinized for analysis...
January 17, 2018: Pathology International
https://www.readbyqxmd.com/read/29340874/lattice-boltzmann-simulations-of-droplet-dynamics-in-time-dependent-flows
#3
F Milan, M Sbragaglia, L Biferale, F Toschi
We study the deformation and dynamics of droplets in time-dependent flows using 3D numerical simulations of two immiscible fluids based on the lattice Boltzmann model (LBM). Analytical models are available in the literature, which assume the droplet shape to be an ellipsoid at all times (P.L. Maffettone, M. Minale, J. Non-Newton. Fluid Mech 78, 227 (1998); M. Minale, Rheol. Acta 47, 667 (2008)). Beyond the practical importance of using a mesoscale simulation to assess "ab initio" the robustness and limitations of such theoretical models, our simulations are also key to discuss --in controlled situations-- some relevant phenomenology related to the interplay between the flow time scales and the droplet time scales regarding the "transparency" transition for high enough shear frequencies for an external oscillating flow...
January 16, 2018: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/29340401/a-nanopaper-based-artificial-tongue-a-ratiometric-fluorescent-sensor-array-on-bacterial-nanocellulose-for-chemical-discrimination-applications
#4
Samira Abbasi-Moayed, Hamed Golmohammadi, M Reza Hormozi-Nezhad
In the present study, a ratiometric fluorescent sensor array as an artificial tongue has been developed on a nanopaper platform for chemical discrimination applications. The bacterial cellulose (BC) nanopaper was utilized for the first time as a novel, flexible, and transparent substrate in the optical sensor arrays for developing high-performance artificial tongues. To fabricate this platform, the hydrophobic walls on the BC nanopaper substrates were successfully created using a laser printing technology. In addition, we have used the interesting photoluminescence (PL) properties of an immobilized ratiometric probe (carbon dot-Rhodamine B (CD-RhB) nanohybrids) on the nanopaper platform to improve the visual discrimination analysis...
January 17, 2018: Nanoscale
https://www.readbyqxmd.com/read/29340391/graphene-on-116-faceted-monocrystalline-anatase-nanosheet-array-for-ultraviolet-detection
#5
Yu Liu, Honglei Cai, Fangfang Wang, Jianlin Wang, Qiuping Huang, Zhengping Fu, Yalin Lu
A structure composed of a nanosheet array may trap photons, which could be used to enhance the optical response via resonances; this may be highly useful in ultraviolet (UV) detection, photocatalysis, solar cells, etc. Moreover, anatase nanosheets exposed with the active {001}, {111}, and {116} facets are promising in applications such as Li-ion battery, photocatalysis, and electrochemistry. Therefore, in this study, the {116} faceted single-crystalline anatase nanosheet array with the sheet spacing in the range of several hundred nanometers was directly grown on the transparent conductive substrates...
January 17, 2018: Nanoscale
https://www.readbyqxmd.com/read/29340387/pb3-seo3-br4-a-new-nonlinear-optical-material-with-enhanced-shg-response-designed-via-an-ion-substitution-strategy
#6
Xiaoxiao Wang, Xingxing Jiang, Hongming Liu, Lei Yang, Zheshuai Lin, Zhanggui Hu, Xianggao Meng, Xingguo Chen, Jingui Qin
Using an ion-substitution strategy, herein, a new polar material, Pb3(SeO3)Br4, with a greatly enhanced SHG response has been successfully designed and synthesized through a hydrothermal reaction. Pb3(SeO3)Br4 crystallizes in the NCS space group P212121 and consists of a three-dimensional framework formed by interconnecting one-dimensional chains, with a good thermal stability up to 230 °C. This compound exhibits a phase-matchable SHG response as strong as that of KH2PO4 (KDP) and a relatively wide mid-infrared (mid-IR) transparent window...
January 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29339582/oxidation-of-copper-nanowire-based-transparent-electrodes-in-ambient-conditions-and-their-stabilization-by-encapsulation-application-to-transparent-film-heaters
#7
Caroline Celle, Anthony Cabos, Thomas Fontecave, Bruno Laguitton, Anass Benayad, Laure Guettaz, Nathalie Pélissier, Viet Huong Nguyen, Daniel Bellet, David Muñoz-Rojas, Jean-Pierre Simonato
Whereas the integration of silver nanowires in functional devices has reached a fair level of maturity, the integration of copper nanowires still remains difficult, mainly due to the intrinsic instability of copper nanowires in ambient conditions. In this paper, copper nanowire based transparent electrodes with good performances (33 Ω sq-1 associated with 88% transparency) were obtained, and their degradation in different conditions was monitored, in particular by electrical measurements, transmission electron microscopy, x-ray photoelectron spectrometry and Auger electron spectroscopy...
January 17, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29339215/registration-in-prospero-of-systematic-review-protocols-was-associated-with-increased-review-quality
#8
Sofia Sideri, Spyridon N Papageorgiou, Theodore Eliades
OBJECTIVES: A priori registration of systematic review protocols in PROSPERO can help increase transparency and thereby the review's credibility. Aim of this study was to assess the influence of a priori registration of orthodontic systematic reviews in PROSPERO on the reviews' quality with the Assessment of Multiple Systematic Reviews (AMSTAR) tool. STUDY DESIGN AND SETTING: Seven databases were searched for systematic reviews with/without meta-analysis in orthodontics published between 2012-2016...
January 12, 2018: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/29339025/electroacoustic-verification-of-frequency-modulation-systems-in-cochlear-implant-users
#9
Vanessa Luisa Destro Fidêncio, Regina Tangerino de Souza Jacob, Liége Franzini Tanamati, Érika Cristina Bucuvic, Adriane Lima Mortari Moret
INTRODUCTION: The frequency modulation system is a device that helps to improve speech perception in noise and is considered the most beneficial approach to improve speech recognition in noise in cochlear implant users. According to guidelines, there is a need to perform a check before fitting the frequency modulation system. Although there are recommendations regarding the behavioral tests that should be performed at the fitting of the frequency modulation system to cochlear implant users, there are no published recommendations regarding the electroacoustic test that should be performed...
December 26, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/29338746/cost-of-diabetes-mellitus-in-africa-a-systematic-review-of-existing-literature
#10
REVIEW
Chipo Mutyambizi, Milena Pavlova, Lumbwe Chola, Charles Hongoro, Wim Groot
BACKGROUND: There is an increasing recognition that non communicable diseases impose large economic costs on households, societies and nations. However, not much is known about the magnitude of diabetes expenditure in African countries and to the best of our knowledge no systematic assessment of the literature on diabetes costs in Africa has been conducted. The aim of this paper is to capture the evidence on the cost of diabetes in Africa, review the methods used to calculate costs and identify areas for future research...
January 16, 2018: Globalization and Health
https://www.readbyqxmd.com/read/29338061/feasibility-of-cell-based-therapy-combined-with-descemetorhexis-for-treating-fuchs-endothelial-corneal-dystrophy-in-rabbit-model
#11
Naoki Okumura, Daiki Matsumoto, Yuya Fukui, Masataka Teramoto, Hirofumi Imai, Tetta Kurosawa, Tomoki Shimada, Friedrich Kruse, Ursula Schlötzer-Schrehardt, Shigeru Kinoshita, Noriko Koizumi
Corneal transparency is maintained by the corneal endothelium through its pump and barrier function. Severe corneal endothelial damage results in dysregulation of water flow and eventually causes corneal haziness and deterioration of visual function. In 2013, we initiated clinical research of cell-based therapy for treating corneal decompensation. In that study, we removed an 8-mm diameter section of damaged corneal endothelium without removing Descemet's membrane (the basement membrane of the corneal endothelium) and then injected cultured human corneal endothelial cells (CECs) into the anterior chamber...
2018: PloS One
https://www.readbyqxmd.com/read/29338044/probing-the-changes-in-gene-expression-due-to-%C3%AE-crystallin-mutations-in-mouse-models-of-hereditary-human-cataract
#12
Usha P Andley, Eric Tycksen, Brittney N McGlasson-Naumann, Paul D Hamilton
The mammalian eye lens expresses a high concentration of crystallins (α, β and γ-crystallins) to maintain the refractive index essential for lens transparency. Crystallins are long-lived proteins that do not turnover throughout life. The structural destabilization of crystallins by UV exposure, glycation, oxidative stress and mutations in crystallin genes leads to protein aggregation and development of cataracts. Several destabilizing mutations in crystallin genes are linked with human autosomal dominant hereditary cataracts...
2018: PloS One
https://www.readbyqxmd.com/read/29337740/risk-prediction-tools-the-need-for-greater-transparency
#13
Laurent G Glance, Andrew W Dick, Turner M Osler
No abstract text is available yet for this article.
February 2018: Anesthesiology
https://www.readbyqxmd.com/read/29337455/-pediatrics-new-classification-of-seizures-and-epilepsies
#14
Sébastien Lebon, Éliane Roulet-Perez
The International League Against Epilepsy published a new classification of epileptic seizures and epilepsies. It is more transparent and important notions like etiologies and comorbities have been added. The identification of seizures, epilepsies then epilepsy syndromes constitutes the three steps of this classification.
January 10, 2018: Revue Médicale Suisse
https://www.readbyqxmd.com/read/29337121/the-society-of-thoracic-surgeons-congenital-heart-surgery-database-2018-update-on-outcomes-and-quality
#15
Jeffrey P Jacobs, John E Mayer, Sara K Pasquali, Kevin D Hill, David M Overman, James D St Louis, S Ram Kumar, Carl L Backer, Charles D Fraser, James S Tweddell, Marshall L Jacobs
The Society of Thoracic Surgeons Congenital Heart Surgery Database is a comprehensive clinical outcomes registry which captures almost all pediatric cardiac surgical operations in the United States. It is the platform for all activities of The Society of Thoracic Surgeons related to the analysis of outcomes and the improvement of quality in this subspecialty. This article summarizes current aggregate national outcomes in congenital and pediatric cardiac surgery and reviews related activities in the areas of quality measurement, performance improvement, and transparency...
January 11, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29337097/physical-and-antimicrobial-properties-of-starch-carboxy-methyl-cellulose-film-containing-rosemary-essential-oils-encapsulated-in-chitosan-nanogel
#16
Nafiseh Mohsenabadi, Ahmad Rajaei, Meisam Tabatabaei, Afshin Mohsenifar
This study was set to prepare a new active film by using a biodegradable bio-based source, i.e., corn starch. To achieve that, benzoic acid (BA) and chitosan (CS) were covalently bound and CS-BA nanogel was then obtained using self-assembly method. Subsequently, rosemary essential oil (REO) was encapsulated in CS-BA nanogel. Finally, REO in both free and encapsulated forms were incorporated in starch-carboxy methyl cellulose (CMC) films and their physical, mechanical and antimicrobial properties were studied...
January 11, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29336452/resonant-scattering-of-green-light-enabled-by-ag-tio2-and-its-application-in-a-green-light-projection-screen
#17
Yiyang Ye, Tupei Chen, Juyuan Zhen, Chen Xu, Jun Zhang, Huakai Li
The ability to selectively scatter green light is essential for an RGB transparent projection display, and this can be achieved by a silver-core, titania-shell nanostructure (Ag@TiO2), based on the metallic nanoparticle's localized surface plasmon resonance. The ability to selectively scatter green light is shown in a theoretical design, in which structural optimization is included, and is then experimentally verified by characterization of a transparent film produced by dispersing such nanoparticles in a polymer matrix...
January 16, 2018: Nanoscale
https://www.readbyqxmd.com/read/29335745/-health-privacy-in-the-age-of-digital-networks
#18
REVIEW
Thilo Weichert
Digitization in the health sector embodies opportunities and risks. These consist of patient and data confidentiality. Vulnerability of data concerning integrity and availability can lead to financial losses and to damage of the health of data subjects. Those risks must be tackled by privacy or data protection law. For this purpose we have the European Data Protection Regulation as a comprehensive legal framework and a harmonizing bracket.This framework contains regulations on consent, purpose binding and data transfer, on rights of the data subject, technical and organizational measures and procedural arrangements...
January 15, 2018: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/29335580/widespread-bone-based-fluorescence-in-chameleons
#19
David Prötzel, Martin Heß, Mark D Scherz, Martina Schwager, Anouk Van't Padje, Frank Glaw
Fluorescence is widespread in marine organisms but uncommon in terrestrial tetrapods. We here show that many chameleon species have bony tubercles protruding from the skull that are visible through their scales, and fluoresce under UV light. Tubercles arising from bones of the skull displace all dermal layers other than a thin, transparent layer of epidermis, creating a 'window' onto the bone. In the genus Calumma, the number of these tubercles is sexually dimorphic in most species, suggesting a signalling role, and also strongly reflects species groups, indicating systematic value of these features...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29335497/interference-induced-enhancement-of-magneto-optical-kerr-effect-in-ultrathin-magnetic-films
#20
Satoshi Sumi, Hiroyuki Awano, Masamitsu Hayashi
We have studied the magneto-optical spectra of ultrathin magnetic films deposited on Si substrates coated with an oxide layer (SiOx). We find that the Kerr rotation angle and the ellipticity of ~1 nm thick CoFeB thin films, almost transparent to visible light, show a strong dependence on the thickness of the SiOx layer. The Kerr signal from the 1 nm CoFeB thin film can be larger than that of ~100 nm thick CoFeB films for a given SiOx thickness and light wavelength. The enhancement of the Kerr signal occurs when optical interference takes place within the SiOx layer...
January 15, 2018: Scientific Reports
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