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https://www.readbyqxmd.com/read/28226376/hyaluronic-acid-fillers-in-soft-tissue-regeneration
#1
Arianna Fallacara, Stefano Manfredini, Elisa Durini, Silvia Vertuani
Over the last years, hyaluronic acid (HA) injectable dermal fillers (DFs) have become the most popular agents for soft tissue contouring and volumizing. HA fillers are characterized by most of the properties that an ideal DF should have, due to HA unique chemical-physical properties, biocompatibility, biodegradability, and versatility. Therefore, HA DFs have revolutionized the filler market with a high number of products, which differ in terms of HA source, cross-linkage (agent and degree), HA concentration, hardness, cohesivity, consistency, inclusion or lack of anesthetic, indication, and longevity of correction...
February 2017: Facial Plastic Surgery: FPS
https://www.readbyqxmd.com/read/28224716/fine-needle-aspiration-cytology-of-the-papillary-thyroid-carcinoma-with-a-solid-component-a-cytological-and-clinical-correlation
#2
Ryuji Ohashi, Yukihiro Murase, Miyuki Matsubara, Yasuhiko Watarai, Takehito Igarashi, Iwao Sugitani, Zenya Naito
BACKGROUND: Solid variant of papillary thyroid carcinoma is a rare subtype of papillary thyroid carcinoma (PTC) containing a solid component (SC), and thus its cytological and clinicopathological features remain elusive. We examined fine needle aspiration (FNA) cytological features of PTC with variable degrees of SC (20-80% of the tumor)(PTCSC) in comparison to well-differentiated PTC (WPTC). METHODS: Twenty-six cases of PTCSC were histologically stratified into major-SC (SC >50% of the tumor) and minor-SC (<49%) groups...
February 22, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28224266/design-process-and-tools-for-dynamic-neuromechanical-models-and-robot-controllers
#3
Nicholas S Szczecinski, Alexander J Hunt, Roger D Quinn
We present a serial design process with associated tools to select parameter values for a posture and locomotion controller for simulation of a robot. The controller is constructed from dynamic neuron and synapse models and simulated with the open-source neuromechanical simulator AnimatLab 2. Each joint has a central pattern generator (CPG), whose neurons possess persistent sodium channels. The CPG rhythmically inhibits motor neurons that control the servomotor's velocity. Sensory information coordinates the joints in the leg into a cohesive stepping motion...
February 21, 2017: Biological Cybernetics
https://www.readbyqxmd.com/read/28223535/giant-ripples-on-comet-67p-churyumov-gerasimenko-sculpted-by-sunset-thermal-wind
#4
Pan Jia, Bruno Andreotti, Philippe Claudin
Explaining the unexpected presence of dune-like patterns at the surface of the comet 67P/Churyumov-Gerasimenko requires conceptual and quantitative advances in the understanding of surface and outgassing processes. We show here that vapor flow emitted by the comet around its perihelion spreads laterally in a surface layer, due to the strong pressure difference between zones illuminated by sunlight and those in shadow. For such thermal winds to be dense enough to transport grains-10 times greater than previous estimates-outgassing must take place through a surface porous granular layer, and that layer must be composed of grains whose roughness lowers cohesion consistently with contact mechanics...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223529/social-ecological-network-analysis-of-scale-mismatches-in-estuary-watershed-restoration
#5
Jesse S Sayles, Jacopo A Baggio
Resource management boundaries seldom align with environmental systems, which can lead to social and ecological problems. Mapping and analyzing how resource management organizations in different areas collaborate can provide vital information to help overcome such misalignment. Few quantitative approaches exist, however, to analyze social collaborations alongside environmental patterns, especially among local and regional organizations (i.e., in multilevel governance settings). This paper develops and applies such an approach using social-ecological network analysis (SENA), which considers relationships among and between social and ecological units...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223112/understanding-and-applying-the-concept-of-value-creation-in-radiology
#6
David B Larson, Daniel J Durand, Daniel S Siegal
The concept of value in radiology has been strongly advocated in recent years as a means of advancing patient care and decreasing waste. This article explores the concept of value creation in radiology and offers a framework for how radiology practices can create value according to the needs of their referring clinicians. Value only exists in the eyes of a customer. We propose that the primary purpose of diagnostic radiology is to answer clinical questions using medical imaging to help guide management of patient care...
February 17, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28222007/object-discovery-via-cohesion-measurement
#7
Guanjun Guo, Hanzi Wang, Wan-Lei Zhao, Yan Yan, Xuelong Li
Color and intensity are two important components in an image. Usually, groups of image pixels, which are similar in color or intensity, are an informative representation for an object. They are therefore particularly suitable for computer vision tasks, such as saliency detection and object proposal generation. However, image pixels, which share a similar real-world color, may be quite different since colors are often distorted by intensity. In this paper, we reinvestigate the affinity matrices originally used in image segmentation methods based on spectral clustering...
February 16, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28220956/releasing-the-cohesin-ring-a-rigid-scaffold-model-for-opening-the-dna-exit-gate-by-pds5-and-wapl
#8
Zhuqing Ouyang, Hongtao Yu
The ring-shaped ATPase machine, cohesin, regulates sister chromatid cohesion, transcription, and DNA repair by topologically entrapping DNA. Here, we propose a rigid scaffold model to explain how the cohesin regulators Pds5 and Wapl release cohesin from chromosomes. Recent studies have established the Smc3-Scc1 interface as the DNA exit gate of cohesin, revealed a requirement for ATP hydrolysis in ring opening, suggested regulation of the cohesin ATPase activity by DNA and Smc3 acetylation, and provided insights into how Pds5 and Wapl open this exit gate...
February 21, 2017: BioEssays: News and Reviews in Molecular, Cellular and Developmental Biology
https://www.readbyqxmd.com/read/28218843/gaussian-based-coupled-cluster-theory-for-the-ground-state-and-band-structure-of-solids
#9
James McClain, Qiming Sun, Garnet Kin-Lic Chan, Timothy C Berkelbach
We present the results of Gaussian-based ground-state and excited-state equation-of-motion coupled-cluster theory with single and double excitations for three-dimensional solids. We focus on diamond and silicon, which are paradigmatic covalent semiconductors. In addition to ground-state properties (the lattice constant, bulk modulus, and cohesive energy), we compute the quasiparticle band structure and band gap. We sample the Brillouin zone with up to 64 k-points using norm-conserving pseudopotentials and polarized double- and triple-zeta basis sets, leading to canonical coupled-cluster calculations with as many as 256 electrons in 2,176 orbitals...
February 20, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28217870/adult-ocular-medulloepithelioma-diagnosed-by-transscleral-fine-needle-aspiration-a-case-report
#10
Amir Mahdjoubi, Nathalie Cassoux, Christine Levy-Gabriel, Laurence Desjardins, Jan Klos, Martial Caly, Tatjana Vlajnic, Sophie Gardrat, Jerzy Klijanienko
Ocular medulloepithelioma (ME) is a rare congenital tumor which occurs usually during childhood but is also reported in adults. They have seen an intraocular tumor in an 89 years-old female with a history of small cell lung carcinoma. Transscleral fine needle aspiration was performed. Aspirates were rich and composed of two distinctive populations of cells. The first consisted of epithelioid large cohesive cells with rare rosettes. Nuclei were oval and chromatin was delicate with small nucleoli. The second population consisted of smaller and dispersed cells with regular nuclei and dusty chromatin...
February 20, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28217356/crystal-structure-of-%C3%AE-6-chlorido-nona-kis-%C3%AE-4-chloro-pyrazolato-bis-%C3%AE-3-methoxo-hexa-copper-ii
#11
Kaige Shi, Logesh Mathivathanan, Raphael G Raptis
The hexa-nuclear title compound, [{Cu3(μ3-OCH3)(μ-C3H2ClN2)3}2(μ-C3H2ClN2)3(μ6-Cl)] or [Cu6(C3H2ClN2)9(CH3O)2Cl], crystallizes in the space group Pbcn, with individual mol-ecules being located on a twofold rotation axis. The mol-ecule adopts a trigonal prismatic shape, with two trinuclear units linked by three 4-chloro-pyrazolate ligand bridges by encapsulating a Cl(-) anion in a μ6-coordination mode. In the crystal, individual mol-ecules are stacked into rods parallel to [1-10] that are arranged in a pseudo-hexa-gonal packing...
February 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28216994/the-obesity-prevention-initiative-a-statewide-effort-to-improve-child-health-in-wisconsin
#12
Alexandra K Adams, Brian Christens, Amy Meinen, Amy Korth, Patrick L Remington, Sara Lindberg, Dale Schoeller
BACKGROUND/SIGNIFICANCE: Obesity rates have increased dramatically, especially among children and disadvantaged populations. Obesity is a complex issue, creating a compelling need for prevention efforts in communities to move from single isolated programs to comprehensive multisystem interventions. To address these issues, we have established a childhood Obesity Prevention Initiative (Initiative) for Wisconsin. This Initiative seeks to test community change frameworks that can support multisystem interventions and provide data for local action as a means for influencing policies, systems, and environments that support individuals' healthy eating and physical activity...
November 2016: WMJ: Official Publication of the State Medical Society of Wisconsin
https://www.readbyqxmd.com/read/28216609/is-the-association-between-park-proximity-and-recreational-physical-activity-among-mid-older-aged-adults-moderated-by-park-quality-and-neighborhood-conditions
#13
Jelle Van Cauwenberg, Ester Cerin, Anna Timperio, Jo Salmon, Benedicte Deforche, Jenny Veitch
Previous studies have reported mixed findings on the relationship between park proximity and recreational physical activity (PA), which could be explained by park quality and the surrounding neighborhood environment. We examined whether park quality and perceptions of the neighborhood physical and social environment moderated associations between park proximity and recreational PA among mid-older aged adults. Cross-sectional self-reported data on park proximity, park quality, neighborhood physical and social environmental factors, recreational walking and other moderate- to vigorous-intensity recreational physical activity (MVPA) were collected among 2700 Australian adults (57-69 years) in 2012...
February 14, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28214249/perceived-neighborhood-social-cohesion-and-preventive-healthcare-use
#14
Eric S Kim, Ichiro Kawachi
INTRODUCTION: Neighborhood social cohesion has been linked with better health and health behaviors, but its association with patterns of preventive healthcare use remains understudied. The hypothesis was that people with higher perceived neighborhood social cohesion would display increased use of preventive healthcare services. METHODS: Participants (N=7,168) were drawn from the 2006 wave of the Health and Retirement Study-a prospective and nationally representative panel study of American adults aged >50 years-and tracked for one wave (2 years)...
February 14, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28214027/arrested-geomorphic-trajectories-and-the-long-term-hidden-potential-for-change
#15
L Allan James
Geomorphic systems often experience morphological changes that define a trajectory over decadal time periods. These trends can be halted by natural inhibitors such as vegetation, knickpoints, bed armor, or bank cohesion, or by anthropogenic inhibitors such as revetment, levees, or dams. Details about where and how channels and floodplains are stabilized are often poorly understood, which poses a risk that modern projects could unwittingly remove critical stabilizing elements (inhibitors) and unleash an episode of rapid change...
February 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28213831/a-phenomenological-cohesive-model-for-the-macroscopic-simulation-of-cell-matrix-adhesions
#16
M Cóndor, J M García-Aznar
Cell adhesion is crucial for cells to not only physically interact with each other but also sense their microenvironment and respond accordingly. In fact, adherent cells can generate physical forces that are transmitted to the surrounding matrix, regulating the formation of cell-matrix adhesions. The main purpose of this work is to develop a computational model to simulate the dynamics of cell-matrix adhesions through a cohesive formulation within the framework of the finite element method and based on the principles of continuum damage mechanics...
February 17, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28213338/a-uniaxial-cyclic-compression-method-for-characterizing-the-rheological-and-textural-behaviors-of-mechanically-dewatered-sewage-sludge
#17
Fenglin Liang, Martial Sauceau, Gilles Dusserre, Patricia Arlabosse
The mechanically dewatered sewage sludge with total solid content around 20% on a weight basis is very similar to yield stress fluid, its complex transition between solid and fluid states is not perfectly reversible and especially challenging in terms of pumping, land spreading and drying. To characterize the rheological and textural properties of highly concentrated sludge, a specific methodology based on uniaxial single and cyclic compression tests is developed. Three types of sludge samples (fresh original, fresh premixed and aged original ones) are extruded into cylinders and pressed between two parallel plates using a material testing machine...
February 7, 2017: Water Research
https://www.readbyqxmd.com/read/28210379/two-crosslinking-technologies-for-superficial-reticular-dermis-injection-a-comparative-ultrasound-and-histologic-study
#18
Patrick Micheels, Stéphanie Besse, Didier Sarazin
Background: Few hyaluronic acid fillers have been developed for superficial injection. Objective: To compare the diffusion and integration properties of cohesive polydensified matrix and Vycross® technology hyaluronic acid fillers with lidocaine following injection into the superficial reticular dermis. Methods and materials: Two subjects received two injections each of cohesive polydensified matrix and Vycross® hyaluronic acid (0.2mL/site) in the superficial reticular dermis of the buttock under ultrasound control...
January 2017: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28208598/neighborhood-environment-and-falls-among-community-dwelling-older-adults
#19
Emily Joy Nicklett, Matthew C Lohman, Matthew Lee Smith
Background: Falls present a major challenge to active aging, but the relationship between neighborhood factors and falls is poorly understood. This study examined the relationship between fall events and neighborhood factors, including neighborhood social cohesion (sense of belonging, trust, friendliness, and helpfulness) and physical environment (vandalism/graffiti, rubbish, vacant/deserted houses, and perceived safety walking home at night). Methods: Data were analyzed from 9259 participants over four biennial waves (2006-2012) of the Health and Retirement Study (HRS), a nationally representative sample of adults aged 65 and older in the United States...
February 10, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28206901/assessment-of-enamel-bond-strength-of-hypoplastic-primary-teeth
#20
Lisa Scheidt, Mariane Emi Sanabe, Fabrãcio Mezzomo Collares, Vicente Castelo Branco Leitune, Eduardo Bresciani, Michele Baffi Diniz
PURPOSE: The purpose of this study was to compare the enamel bond strength of hypoplastic and healthy primary teeth. METHODS: Twenty-five hypoplastic teeth (experimental group) and 25 healthy primary teeth (control group) were selected and conditioned with 35 percent orthophosphoric acid before a two-layer adhesive system (Single Bond) was applied. Composite resin (Filtek Z350) was inserted in a single application, two-mm high and one-mm in diameter, and then light-cured for 20 seconds...
October 15, 2016: Pediatric Dentistry
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