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https://www.readbyqxmd.com/read/29150653/a-theoretical-quest-for-high-temperature-superconductivity-on-the-example-of-low-dimensional-carbon-structures
#1
C H Wong, R Lortz, E A Buntov, R E Kasimova, A F Zatsepin
High temperature superconductivity does not necessarily require correlated electron systems with complex competing or coexisting orders. Instead, it may be achieved in a phonon-mediated classical superconductor having a high Debye temperature and large electronic density of states at the Fermi level in a material with light atoms and strong covalent bonds. Quasi-1D conductors seem promising due to the Van Hove singularities in their electronic density of states. In this sense, quasi-1D carbon structures are good candidates...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29150284/the-displacing-foods-of-modern-commerce-are-the-primary-and-proximate-cause-of-age-related-macular-degeneration-a-unifying-singular-hypothesis
#2
Chris A Knobbe, Marija Stojanoska
Age-related macular degeneration (AMD) is the leading cause of irreversible vision loss and blindness in developed nations. AMD is anticipated to affect 196 million people worldwide, by 2020. However, the etiology of this disease remains unknown. Aging, genetic, and environmental influences have generally been implicated as major etiologic factors. We sought to examine the hypothesis that consumption of the 'displacing foods of modern commerce,' which equate to processed, nutrient-deficient and potentially toxic foods, may be the primary and proximate cause of AMD...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29149872/process-quality-of-decision-making-in-multidisciplinary-cancer-team-meetings-a-structured-observational-study
#3
Pola Hahlweg, Sarah Didi, Levente Kriston, Martin Härter, Yvonne Nestoriuc, Isabelle Scholl
BACKGROUND: The quality of decision-making in multidisciplinary team meetings (MDTMs) depends on the quality of information presented and the quality of team processes. Few studies have examined these factors using a standardized approach. The aim of this study was to objectively document the processes involved in decision-making in MDTMs, document the outcomes in terms of whether a treatment recommendation was given (none vs. singular vs. multiple), and to identify factors related to type of treatment recommendation...
November 17, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29149859/medicinal-plants-used-by-women-in-mecca-urban-muslim-and-gendered-knowledge
#4
Afnan Alqethami, Julie A Hawkins, Irene Teixidor-Toneu
BACKGROUND: This study explores medicinal plant knowledge and use among Muslim women in the city of Mecca, Saudi Arabia. Ethnobotanical research in the region has focused on rural populations and male herbal healers in cities, and based on these few studies, it is suggested that medicinal plant knowledge may be eroding. Here, we document lay, female knowledge of medicinal plants in an urban centre, interpreting findings in the light of the growing field of urban ethnobotany and gendered knowledge and in an Islamic context...
November 17, 2017: Journal of Ethnobiology and Ethnomedicine
https://www.readbyqxmd.com/read/29148432/a-singular-value-decomposition-linear-programming-svdlp-optimization-technique-for-circular-cone-based-robotic-radiotherapy
#5
Bin Liang, Yongbao Li, Wei Ran, Bin Guo, Xuang Xu, Bo Liu, Jiafeng Li, Qiuwen Wu, Fugen Zhou
With robot-controlled linac positioning, the robotic radiotherapy system such as CyberKnife significantly increases the freedom in radiation beam placement, but also imposes more challenges on treatment plan optimization. The resampling mechanism in vendor supplied treatment planning system (MultiPlan) could not fully explore the increased beam direction search space. Besides, a sparse treatment plan (using fewer beams) is desired to improve the treatment efficiency. This study proposes a singular value decomposition linear programming (SVDLP) optimization technique for circular collimator based robotic radiotherapy...
November 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29146809/compacted-dimensions-and-singular-plasmonic-surfaces
#6
J B Pendry, Paloma Arroyo Huidobro, Yu Luo, Emanuele Galiffi
In advanced field theories, there can be more than four dimensions to space, the excess dimensions described as compacted and unobservable on everyday length scales. We report a simple model, unconnected to field theory, for a compacted dimension realized in a metallic metasurface periodically structured in the form of a grating comprising a series of singularities. An extra dimension of the grating is hidden, and the surface plasmon excitations, though localized at the surface, are characterized by three wave vectors rather than the two of typical two-dimensional metal grating...
November 17, 2017: Science
https://www.readbyqxmd.com/read/29145168/frontal-infraslow-activity-marks-the-motor-spasms-of-anti-lgi1-encephalitis
#7
Richard Wennberg, Claude Steriade, Robert Chen, Danielle Andrade
OBJECTIVE: The clinical and electrographic features of seizures in anti-LGI1 encephalitis are distinct from those seen in other autoimmune encephalitides or non-encephalitic epilepsies. One electroclinical phenomenon specific to the condition consists of lateralized motor spasms, known as faciobrachial dystonic seizures (FBDS). An electrodecremental pattern overriding a "DC shift" has been described as the EEG correlate of these spasms. We sought to further characterize this pre-spasm infraslow activity (ISA)...
October 28, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/29144753/nonlinear-metasurface-for-simultaneous-control-of-spin-and-orbital-angular-momentum-in-second-harmonic-generation
#8
Guixin Li, Lin Wu, King Fai Li, Shumei Chen, Christian Schlickriede, Zhengji Xu, Siya Huang, Wen-Di Li, Yan Jun Liu, Edwin Yue-Bun Pun, Thomas Zentgraf, Kok Wai Cheah, Yu Luo, Shuang Zhang
The spin and orbital angular momentum (SAM and OAM) of light is providing a new gateway towards high capacity and robust optical communications. While the generation of light with angular momentum is well studied in linear optics, its further integration into nonlinear optical devices will open new avenues for increasing the capacity of optical communications through additional information channels at new frequencies. However, it has been challenging to manipulate the both SAM and OAM of nonlinear signals in harmonic generation processes with conventional nonlinear materials...
November 16, 2017: Nano Letters
https://www.readbyqxmd.com/read/29141701/the-roles-of-word-form-frequency-and-phonological-neighbourhood-density-in-the-acquisition-of-lithuanian-noun-morphology
#9
Eglė Savičiūtė, Ben Ambridge, Julian M Pine
Four- and five-year-old children took part in an elicited familiar and novel Lithuanian noun production task to test predictions of input-based accounts of the acquisition of inflectional morphology. Two major findings emerged. First, as predicted by input-based accounts, correct production rates were correlated with the input frequency of the target form, and with the phonological neighbourhood density of the noun. Second, the error patterns were not compatible with the systematic substitution of target forms by either (a) the most frequent form of that noun or (b) a single morphosyntactic default form, as might be predicted by naive versions of a constructivist and generativist account, respectively...
November 16, 2017: Journal of Child Language
https://www.readbyqxmd.com/read/29140136/salt-glycerol-induced-hyperhydration-enhances-fluid-retention-more-than-salt-or-glycerol-induced-hyperhydration
#10
Eric D B Goulet, Adrien De La Flore, Félix A Savoie, Jonathan Gosselin
Hyperhydration has been demonstrated to improve work capacity and cardiovascular and thermoregulatory functions, enhance orthostatic tolerance, slow or neutralize bone demineralization and decrease post-dive bubble formation. Adding sodium or glycerol to a hyperhydration solution optimizes fluid retention. Sodium and glycerol produce their effect through different physiological mechanisms. If combined into a hyperhydration solution their impact on fluid retention could potentially be greater than their singular effect...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29138681/cell-signaling-with-extracellular-thioredoxin-and-thioredoxin-like-proteins-insight-into-their-mechanisms-of-action
#11
REVIEW
Thierry Léveillard, Najate Aït-Ali
Thioredoxins are small thiol-oxidoreductase enzymes that control cellular redox homeostasis. Paradoxically, human thioredoxin (TXN1) was first identified as the adult T cell leukemia-derived factor (ADF), a secreted protein. ADF has been implicated in a wide variety of cell-to-cell communication systems acting as a cytokine or a chemokine. TRX80 is a truncated TXN1 protein with cytokine activity. The unconventional secretion mechanism of these extracellular thioredoxins is unknown. The thioredoxin system is relying on glucose metabolism through the pentose phosphate pathway that provides reducing power in the form of NADPH, the cofactor of thioredoxin reductase (TXNRD)...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29138088/comparing-multilayer-brain-networks-between-groups-introducing-graph-metrics-and-recommendations
#12
Kanad Mandke, Jil Meier, Matthew J Brookes, Reuben D O'Dea, Piet Van Mieghem, Cornelis J Stam, Arjan Hillebrand, Prejaas Tewarie
There is an increasing awareness of the advantages of multi-modal neuroimaging. Networks obtained from different modalities are usually treated in isolation, which is however contradictory to accumulating evidence that these networks show non-trivial interdependencies. Even networks obtained from a single modality, such as frequency-band specific functional networks measured from magnetoencephalography (MEG) are often treated independently. Here, we discuss how a multilayer network framework allows for integration of multiple networks into a single network description and how graph metrics can be applied to quantify multilayer network organisation for group comparison...
November 11, 2017: NeuroImage
https://www.readbyqxmd.com/read/29136609/a-group-based-image-inpainting-using-patch-refinement-in-mrf-framework
#13
Mrinmoy Ghorai, Sekhar Mandal, Bhabatosh Chanda
This paper presents a Markov random field (MRF)-based image inpainting algorithm using patch selection from groups of similar patches and optimal patch assignment through joint patch refinement. In patch selection, a novel group formation strategy based on subspace clustering is introduced to search the candidate patches in relevant source region only. This improves patch searching in terms of both quality and time. We also propose an efficient patch refinement scheme using higher order singular value decomposition to capture underlying pattern among the candidate patches...
February 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29135508/new-histologic-finding-of-amyloid-insulin-bodies-at-an-insulin-injection-site-in-a-patient-with-diabetes
#14
Benjamin D Katzman, Peter Traum, Paul B Medline
Amyloidosis is a heterogeneous group of protein deposition diseases with more than 40 known clinical presentations. Localized amyloidosis occurs when the protein deposits exist in a singular location. Patients with diabetes mellitus who inject insulin at the same site can develop localized insulin-derived amyloidosis (AIns) at the injection site, which can be confused clinically with lipoma, lipohyperplasia, lipoatrophy, and fat necrosis. Histologic examination is performed to confirm localized AIns. We report a case of a patient with a long history of type 2 diabetes who presented with a subcutaneous mass in the abdomen at a preferred insulin injection site...
November 7, 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29135118/the-impact-of-dose-matrix-and-voxel-dimensions-to-dose-calculation-for-stereotactic-radiosurgery
#15
Kalliopi Platoni, Pascal Grandjean, Vassilis Kouloulias, George Patatoukas, Dimitris Lefkopoulos
PURPOSE: The purpose of the present study was the optimization of dose calculation for intracranial stereotactic radiosurgery. METHODS: We evaluated the Singular Value Decomposition (SVD) analysis as a novel optimization technique. Our approach to dose distribution optimization was to recover estimates of minibeams weights from well-defined provisional dose matrices. The dose delivered by a set of minibeams is formulated as a matrix equation. We studied the influence of dose matrix and voxel dimensions on the conditioning of stereotactic radiotherapy inverse problem...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29134953/incidental-finding-of-upper-lip-warthin-tumor
#16
Marzia Petrocelli, Carolina Sbordone, Giovanni Salzano, Giovanni Dell'Aversana Orabona, Francesco Maria Cassandro, Stefano Fusetti, Luigi Califano, Ettore Cassandro
AIM: This report shows an incidental finding of Warthin tumor in upper lip mucosa during hospitalization for a biting lesion of cheek mucosa MATERIALS AND METHODS: A 32-year-old male affected by a biting lesion of cheek mucosa was presented at Maxillo- Facial Unit of Federico II University. Clinical examination showed as an incidental finding a solid mass in the superficial layer of upper lip mucosa. We performed mini-invasive surgical treatment to obtain a radical excision of the cheek lesion at the same time as excision of Warthin tumor...
November 14, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/29132616/imperceptible-watermarking-for-security-of-fundus-images-in-tele-ophthalmology-applications-and-computer-aided-diagnosis-of-retina-diseases
#17
Anushikha Singh, Malay Kishore Dutta
BACKGROUND AND OBJECTIVES: The authentication and integrity verification of medical images is a critical and growing issue for patients in e-health services. Accurate identification of medical images and patient verification is an essential requirement to prevent error in medical diagnosis. The proposed work presents an imperceptible watermarking system to address the security issue of medical fundus images for tele-ophthalmology applications and computer aided automated diagnosis of retinal diseases...
December 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29129934/improved-shape-for-refinable-surfaces-with-singularly-parameterized-irregularities
#18
Kęstutis Karčiauskas, Jörg Peters
To date, singularly-parameterized surface constructions suffer from poor highlight line distributions, ruling them out as a surface representation of choice for primary design surfaces. This paper explores graded, many-piece, everywhere C(1) singularly-parameterized surface caps that mimic the shape of a high-quality guide surface. The approach illustrates the trade-off between polynomial degree and surface quality. For bi-degree 5, minor flaws in the highlight line distribution are still visible when zooming in on the singularity, but the distribution is good at the macroscopic level...
September 2017: Computer Aided Design
https://www.readbyqxmd.com/read/29127320/crystalline-soda-can-metamaterial-exhibiting-graphene-like-dispersion-at-subwavelength-scale
#19
Simon Yves, Fabrice Lemoult, Mathias Fink, Geoffroy Lerosey
Graphene, a honeycomb lattice of carbon atoms ruled by tight-binding interaction, exhibits extraordinary electronic properties due to the presence of Dirac cones within its band structure. These intriguing singularities have naturally motivated the discovery of their classical analogues. In this work, we present a general and direct procedure to reproduce the peculiar physics of graphene within a very simple acoustic metamaterial: a double lattice of soda cans resonating at two different frequencies. The first triangular sub-lattice generates a bandgap at low frequency, which induces a tight-binding coupling between the resonant defects of the second honeycomb one, hence allowing us to obtain a graphene-like band structure...
November 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29127152/objective-cardiovascular-assessment-in-the-neonatal-intensive-care-unit
#20
REVIEW
Eugene M Dempsey, Afif Faisal El-Khuffash
Traditionally, cardiovascular well-being was essentially based on whether the mean blood pressure was above or below a certain value. However, this singular crude method of assessment provides limited insight into overall cardiovascular well-being. Echocardiography has become increasingly used and incorporated into clinical care. New objective modality assessments of cardiovascular status continue to evolve and are being evaluated and incorporated into clinical care. In this review article, we will discuss some of the recent advances in objective assessment of cardiovascular well-being, including the concept of multimodal monitoring...
November 10, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
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