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https://www.readbyqxmd.com/read/28214485/outcome-of-peripheral-venous-reconstructions-during-tumor-resection
#1
Philip Y Sun, Mark D Fleming, Kendall Stauffer, Manju Kalra, Gustavo Oderich, Thomas Bower, Peter Gloviczki, Randall R DeMartino
OBJECTIVE: Peripheral venous reconstruction surgery may be necessary for appropriate oncologic resection; however, the operative approach and surgical outcomes are not well described. We report our experience with these complex reconstructions to identify best practice. METHODS: We retrospectively reviewed all adult patients who underwent peripheral vein reconstruction for tumor resection at Mayo Clinic, Rochester (2000-2015). Patients were classified into three subgroups by the location: iliac (IL), lower extremity (LE), and upper extremity (UE)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214382/allergic-contact-cheilitis-from-anethole-containing-toothpastes-a-practical-solution
#2
N Horst, J Leysen, T Mellaerts, J Lambert, O Aerts
In patients presenting with therapy-resistant cheilitis, especially when extending to the perioral skin, patch tests should be performed, even in longstanding cases(1-2) . A 55-year-old woman suffered from an oozing cheilitis for three months with erythema, edema and crusting of the lips and perioral skin (Fig. 1). An intra-oral burning sensation, loss of taste and a dry mouth were also present. Microbiological swabs and a blood analysis did not reveal any abnormalities, and the application of topical corticosteroids brought only temporary relief...
February 18, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28214120/linking-potential-heat-source-and-sink-to-urban-heat-island-heterogeneous-effects-of-landscape-pattern-on-land-surface-temperature
#3
Weifeng Li, Qiwen Cao, Kun Lang, Jiansheng Wu
Rapid urbanization has significantly contributed to the development of urban heat island (UHI). Regulating landscape composition and configuration would help mitigate the UHI in megacities. Taking Shenzhen, China, as a case study area, we defined heat source and heat sink and identified strong and weak sources as well as strong and weak sinks according to the natural and socioeconomic factors influencing land surface temperature (LST). Thus, the potential thermal contributions of heat source and heat sink patches were differentiated...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28213677/a-new-distribution-range-of-ateles-chamek-humboldt-1812-in-an-ecotone-of-three-biomes-in-the-paraguay-river-basin
#4
Manoel Dos Santos-Filho, Christine Steiner São Bernardo, Henry Willian Van der Laan Barbosa, Almério Câmara Gusmão, Leandro Jerusalinsky, Gustavo Rodrigues Canale
Historical records of Ateles chamek (black-faced black spider monkey) suggest that the species range extends further south of the known species distribution, within an ecotonal region between the Amazonia, Cerrado and Pantanal biomes in Brazil. Ecotones are zones of habitat transition with high species richness that remain undersampled as conservationists often prioritize biodiversity hotspots. Thus, distribution ranges may be inaccurately measured when species occur in ecotonal zones. We report the first precise records of A...
February 17, 2017: Primates; Journal of Primatology
https://www.readbyqxmd.com/read/28213442/amplitude-normalization-of-dendritic-epsps-at-the-soma-of-binaural-coincidence-detector-neurons-of-the-medial-superior-olive
#5
Bradley D Winters, Shan-Xue Jin, Kenneth R Ledford, Nace L Golding
The principal neurons of the medial superior olive (MSO) encode cues for horizontal sound localization through comparisons of the relative timing of excitatory postsynaptic potentials (EPSPs). To understand how the timing and amplitude of EPSPs is maintained during propagation in the dendrites, we made dendritic and somatic whole-cell recordings from MSO principal neurons in brain slices from Mongolian gerbils. In somatic recordings, EPSP amplitudes were largely uniform following minimal stimulation of excitatory synapses at visualized locations along the dendrites...
February 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28213290/zd0947-a-sulphonylurea-receptor-modulator-detects-functional-sulphonylurea-receptor-subunits-in-murine-vascular-smooth-muscle-atp-sensitive-k-channels
#6
Tadashi Yamamoto, Kohei Takahara, Keiichiro Uchida, Noriyoshi Teramoto
In order to identify functional sulphonylurea receptor (SUR.x) subunits of native ATP-sensitive K(+) channels (KATP channels) in mouse portal vein, the effects of ZD0947, a SUR.x modulator, were investigated on spontaneous portal vein contractions, macroscopic membrane currents and unitary currents recorded (using patch-clamp techniques) in freshly dispersed mouse portal vein myocytes. Spontaneous contractions in mouse portal vein were reversibly reduced by ZD0947 in a concentration-dependent manner (Ki = 293nM)...
February 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28212105/compositional-model-based-sketch-generator-in-facial-entertainment
#7
Mingjin Zhang, Jie Li, Nannan Wang, Xinbo Gao
Face sketch synthesis (FSS) plays an important role in facial entertainment, which includes face sketch morphing among two styles, multiview FSS and face sketch expression manipulation. For facial entertainment, most existing FSS methods generate sketches with over-smoothing effects, i.e., fine details are suppressed more or less. In this paper, we propose a face sketch generator based on the compositional model to handle this issue. It decomposes a face into different components instead of patches as before, and each component has several candidate templates...
February 14, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28212087/dual-deep-network-for-visual-tracking
#8
Zhizhen Chi, Hongyang Li, Huchuan Lu, Minghsuan Yang
Visual tracking addresses the problem of identifying and localizing an unknown target in a video given the target specified by a bounding box in the first frame. In this paper, we propose a dual network to better utilize features among layers for visual tracking. It is observed that features in higher layers encode semantic context while its counterparts in lower layers are sensitive to discriminative appearance. Thus we exploit the hierarchical features in different layers of a deep model and design a dual structure to obtain better feature representation from various streams, which is rarely investigated in previous work...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28212084/objective-quality-assessment-of-screen-content-images-by-uncertainty-weighting
#9
Yuming Fang, Jiebin Yan, Jiaying Liu, Shiqi Wang, Qiaohong Li, Zongming Guo
In this paper, we propose a novel full-reference objective quality assessment metric for screen content images (SCIs) by structure features and uncertainty weighting (SFUW). The input SCI is first divided into textual and pictorial regions. The visual quality of textual regions is estimated based on perceptual structural similarity, where the gradient information is adopted as the structural feature. To predict the visual quality of pictorial regions in SCIs, we extract the structural features and luminance features for similarity computation between the reference and distorted pictorial patches...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28211483/colonisation-in-social-species-the-importance-of-breeding-experience-for-dispersal-in-overcoming-information-barriers
#10
A Payo-Payo, M Genovart, A Sanz-Aguilar, J L Greño, M García-Tarrasón, A Bertolero, J Piccardo, D Oro
Studying colonisation is crucial to understand metapopulations, evolutionary ecology and species resilience to global change. Unfortunately, few empirical data are available because field monitoring that includes empty patches at large spatiotemporal scales is required. We examine the colonisation dynamics of a long-lived seabird over 34 years in the western Mediterranean by comparing population and individual data from both source colony and the newly-formed colonies. Since social information is not available, we hypothesize that colonisation should follow particular dispersal dynamics and personal information must be crucial in decision making...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211463/ecological-and-genetic-basis-of-metapopulation-persistence-of-the-glanville-fritillary-butterfly-in-fragmented-landscapes
#11
Ilkka Hanski, Torsti Schulz, Swee Chong Wong, Virpi Ahola, Annukka Ruokolainen, Sami P Ojanen
Ecologists are challenged to construct models of the biological consequences of habitat loss and fragmentation. Here, we use a metapopulation model to predict the distribution of the Glanville fritillary butterfly during 22 years across a large heterogeneous landscape with 4,415 small dry meadows. The majority (74%) of the 125 networks into which the meadows were clustered are below the extinction threshold for long-term persistence. Among the 33 networks above the threshold, spatial configuration and habitat quality rather than the pooled habitat area predict metapopulation size and persistence, but additionally allelic variation in a SNP in the gene Phosphoglucose isomerase (Pgi) explains 30% of variation in metapopulation size...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28211069/mglur1-enhances-efferent-inhibition-of-inner-hair-cells-in-the-developing-rat-cochlea
#12
Zhanlei Ye, Juan D Goutman, Sonja J Pyott, Elisabeth Glowatzki
Just before the onset of hearing, the inner hair cells (IHCs) receive inhibitory efferent input from cholinergic medial olivocochlear (MOC) neurons originating in the brainstem. This input may serve a role in the maturation of the ascending (afferent) auditory system by inhibiting spontaneous activity of the IHCs. To investigate the molecular mechanisms regulating these IHC efferent synapses, we combined electrical stimulation of the efferent fibres with patch clamp recordings from the IHCs to measure efferent synaptic strength...
February 17, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28210390/a-case-of-lichen-planus-pigmentosus-with-facial-dyspigmentation-responsive-to-combination-therapy-with-chemical-peels-and-topical-retinoids
#13
Marisa Wolff, Nina Sabzevari, Charles Gropper, Cindy Hoffman
Lichen planus pigmentosus is a photodistributed dyschromia of unknown etiology described clinically as hyperpigmented gray-blue or brown-black macules or patches in a photodistributed pattern. Although there has been some debate, lichen planus pigmentosus is considered by many to be a separate diagnostic entity from ashy dermatosis or erythema dyschromicum perstans, which shares similar characteristics. Various treatment strategies have been applied to help resolve or improve the appearance of lichen planus pigmentosus lesions; however, an optimal treatment method is yet to be elucidated...
November 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28210214/arginine-vasopressin-alters-both-spontaneous-and-phase-locked-synaptic-inputs-to-airway-vagal-preganglionic-neuron-via-activation-of-v1a-receptor-insights-into-stress-related-airway-vagal-excitation
#14
Xianxia Yan, Xingxin Chen, Yuhong Guo, Ding He, Yonghua Chen, Chunmei Xia, Jijiang Wang
The airway vagal preganglionic neurons (AVPNs) in the external formation of the nucleus ambiguus (eNA) play a major role in the vagal control of tracheobronchial smooth muscle tone and maintenance of airway resistance. The eNA receives vasopressinergic projection from the hypothalamic paraventricular nucleus (PVN), the key node for the genesis of psychological stress. Since airway vagal excitation is reportedly to be associated with the psychological stress-induced/exacerbated airway hyperresponsiveness in asthmatics, arginine vasopressin (AVP) might be involved in stress-related airway vagal excitation...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28208633/compact-planar-ultrawideband-antennas-with-3-5-5-2-5-8-ghz-triple-band-notched-characteristics-for-internet-of-things-applications
#15
Jian Dong, Qianqian Li, Lianwen Deng
Ultrawideband (UWB) antennas, as core devices in high-speed wireless communication, are widely applied to mobile handsets, wireless sensor networks, and Internet of Things (IoT). A compact printed monopole antenna for UWB applications with triple band-notched characteristics is proposed in this paper. The antenna has a very compact size of 10 x 16 mm2 and is composed of a square slotted radiation patch and a narrow rectangular ground plane on the back of the substrate. First, by etching a pair of inverted T-shaped slots at the bottom of the radiation patch, one notched band at 5-6 GHz for rejecting the Wireless Local Area Network (WLAN) is generated...
February 10, 2017: Sensors
https://www.readbyqxmd.com/read/28208432/search-in-patchy-media-exploitation-exploration-tradeoff
#16
M Chupeau, O Bénichou, S Redner
How to best exploit patchy resources? We introduce a minimal exploitation-migration model that incorporates the coupling between a searcher's trajectory, modeled by a random walk, and ensuing depletion of the environment by the searcher's consumption of resources. The searcher also migrates to a new patch when it takes S consecutive steps without finding resources. We compute the distribution of consumed resources F_{t} at time t for this non-Markovian searcher and show that consumption is maximized by exploring multiple patches...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208385/kinetics-of-motility-induced-phase-separation-and-swim-pressure
#17
Adam Patch, David Yllanes, M Cristina Marchetti
Active Brownian particles (ABPs) represent a minimal model of active matter consisting of self-propelled spheres with purely repulsive interactions and rotational noise. Here we examine the pressure of ABPs in two dimensions in both closed boxes and systems with periodic boundary conditions and show that its nonmonotonic behavior with density is a general property of ABPs and is not the result of finite-size effects. We correlate the time evolution of the mean pressure towards its steady-state value with the kinetics of motility-induced phase separation...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208382/criticality-of-colloids-with-three-distinct-interaction-patches-as-simple-as-a-b-c
#18
J M Tavares, P I C Teixeira
We systematically study the phase behavior of a simple model of associating fluids which consists of hard spherical particles with three short-ranged attractive sites on their surfaces (sticky spots or patches), of types A,B, and C, that can form bonds with energy ε_{ij} (i,j=A,B,C). We consider realizations of the model with one, two, or three nonzero ε_{ij}. Using Wertheim's first order perturbation theory of association, we establish the minimum requirements on the bond energies for the model to exhibit a liquid-vapor critical point, and investigate the nature of criticality in each case...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28207956/application-of-network-methods-for-understanding-evolutionary-dynamics-in-discrete-habitats
#19
Gili Greenbaum, Nina H Fefferman
In populations occupying discrete habitat patches, gene flow between habitat patches may form an intricate population structure. In such structures, the evolutionary dynamics resulting from interaction of gene flow patterns with other evolutionary forces may be exceedingly complex. Several models describing gene flow between discrete habitat patches have been presented in the population genetics literature; however, these models have usually addressed relatively simple settings of habitable patches, and have stopped short of providing general methodologies for addressing non-trivial gene flow patterns...
February 16, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28207578/the-impact-of-a-cochlear-implant-electrode-array-on-the-middle-ear-transfer-function
#20
David Pazen, Andreas Anagiotos, Maike Nünning, Antoniu-Oreste Gostian, Magdalene Ortmann, Dirk Beutner
OBJECTIVES: As a treatment for partial deafness with residual hearing in the lower frequency range, the combined acoustic and electric stimulation of the cochlea has become widespread. Acoustic stimulation is provided by a hearing aid's airborne sound and the electric stimulation by a cochlear implant electrode array, which may be inserted through the round window or a cochleostomy. To take advantage of that concept, it is essential to preserve residual hearing after surgery. Therefore, the intracochlear electrode array should not compromise the middle ear vibration transmission...
February 15, 2017: Ear and Hearing
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