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https://www.readbyqxmd.com/read/28079551/current-techniques-for-burn-reconstruction-using-dehydrated-human-amnion-chorion-membrane-allografts-as-an-adjunctive-treatment-along-the-reconstructive-ladder
#1
Paul M Glat, Thomas Davenport
The reconstructive ladder is a term coined by reconstructive plastic surgeons to describe levels of increasingly complex management of wounds. The first rungs of the ladder is allowing the wound to heal by secondary intention, advancing up the ladder to direct tissue closure, with skin grafting and tissue transfer (flaps) comprising the higher rungs. Skin grafting and tissue transfer (flaps) at the middle and higher rungs of the ladder are often necessary for the treatment of complex burn injuries. Our purpose is to describe how dehydrated human amnion/chorion membrane allografts may be used as an adjunctive treatment...
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28078070/stem-cells-and-tissue-niche-two-faces-of-the-same-coin-of-muscle-regeneration
#2
Bianca Maria Scicchitano, Gigliola Sica, Antonio Musarò
Capacity of adult muscle to regenerate in response to injury stimuli represents an important homeostatic process. Regeneration is a highly coordinated program that partially recapitulates the embryonic developmental program. However, muscle regeneration is severely compromised in several pathological conditions. It is likely that the restricted tissue repair program under pathological conditions is due to either progressive loss of stem cell populations or to missing signals that limit the damaged tissues to efficiently activate a regenerative program...
September 15, 2016: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28075001/-proposed-model-of-executive-functions-based-on-factorial-analyses
#3
REVIEW
J Tirapu-Ustarroz, P Cordero-Andres, P Luna-Lario, P Hernaez-Goni
INTRODUCTION: Since Lezak coined the term executive functions to refer to the mental capabilities that are considered essential for performing efficacious, creative and socially acceptable behaviour, they have gradually grown in importance in neuropsychological research. Different models have been proposed to explain their nature, but there is no general agreement as to whether we are dealing with a unitary construct or a multimodal processing system with independent, but interconnected, components...
January 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28074578/managing-conflicts-between-physicians-and-surrogates
#4
Carol Bayley
Two articles in this issue of the Hastings Center Report explore two sides of the same problematic coin. In "The Limits of Surrogates' Moral Authority and Physician Professionalism," Jeffrey Berger discusses the moral problem of a surrogate refusing a treatment, palliative sedation, on behalf of a patient whose suffering is refractory to intensive palliative efforts provided by a multidisciplinary team. In "After the DNR: Surrogates Who Persist in Requesting Cardiopulmonary Resuscitation," Ellen Robinson and her colleagues analyze data from a study of cases in which physicians wished not to perform cardiopulmonary resuscitation on patients whom they thought it would harm...
January 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28067671/a-fatal-case-of-coin-battery-ingestion-in-an-18-month-old-child-case-report-and-literature-review
#5
Francesco Ventura, Sara Candosin, Rosario Barranco, Alessandro Bonsignore, Luisa Andrello, Luca Tajana, Antonio Osculati
The ingestion of extraneous substances is quite common in clinical practice; it usually befalls in the pediatric age, mostly between 6 months and 6 years. In most cases, complications do not emerge, and the prognosis is considered favorable. However, when a case of battery ingestion occurs, serious adverse events may develop. The ingestion of these components is a potential life-threatening event for children.In this article, we report the case of an 18-month-old child who died from hemorrhagic shock due to an aortoesophageal fistula caused by a 20 mm lithium button battery lodged in the esophagus...
January 7, 2017: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/28062878/-an-unusual-finding-of-two-coins-together-in-the-esophagus-of-pediatric-patients-report-of-two-cases
#6
Alexis Ormeño Julca
The ingestion of foreign bodies (EB) is a frequent complaint in the Pediatric Emergency Services. Studies report that in children occurs 80% of the EC, most frequently between 6 months and 3 years old and the second held because of urgent endoscopy in pediatrics. In 80-90% of cases the CE spontaneously passes through the upper gastrointestinal tract, however occasionally staying in the esophagus and should be removed to avoid dangerous complications such as obstruction or perforation of the upper digestive tract bleeding, ulcers, or fistulas...
October 2016: Revista de Gastroenterología del Perú: órgano Oficial de la Sociedad de Gastroenterología del Perú
https://www.readbyqxmd.com/read/28062413/survey-of-local-and-global-biological-network-alignment-the-need-to-reconcile-the-two-sides-of-the-same-coin
#7
Pietro Hiram Guzzi, Tijana Milenković
Analogous to genomic sequence alignment that allows for across-species transfer of biological knowledge between conserved sequence regions, biological network alignment can be used to guide the knowledge transfer between conserved regions of molecular networks of different species. Hence, biological network alignment can be used to redefine the traditional notion of a sequence-based homology to a new notion of network-based homology. Analogous to genomic sequence alignment, there exist local and global biological network alignments...
January 5, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28060272/synthesis-of-ionic-liquid-based-electrolytes-assembly-of-li-ion-batteries-and-measurements-of-performance-at-high-temperature
#8
Xinrong Lin, Jennifer Chapman Varela, Mark W Grinstaff
The chemical instability of the traditional electrolyte remains a safety issue in widely used energy storage devices such as Li-ion batteries. Li-ion batteries for use in devices operating at elevated temperatures require thermally stable and non-flammable electrolytes. Ionic liquids (ILs), which are non-flammable, non-volatile, thermally stable molten salts, are an ideal replacement for flammable and low boiling point organic solvent electrolytes currently used today. We herein describe the procedures to: 1) synthesize mono- and di-phosphonium ionic liquids paired with chloride or bis(trifluoromethane)sulfonimide (TFSI) anions; 2) measure the thermal properties and stability of these ionic liquids by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA); 3) measure the electrochemical properties of the ionic liquids by cyclic voltammetry (CV); 4) prepare electrolytes containing lithium bis(trifluoromethane)sulfonamide; 5) measure the conductivity of the electrolytes as a function of temperature; 6) assemble a coin cell battery with two of the electrolytes along with a Li metal anode and LiCoO2 cathode; and 7) evaluate battery performance at 100 °C...
December 20, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059761/density-functional-theory-is-straying-from-the-path-toward-the-exact-functional
#9
Michael G Medvedev, Ivan S Bushmarinov, Jianwei Sun, John P Perdew, Konstantin A Lyssenko
The theorems at the core of density functional theory (DFT) state that the energy of a many-electron system in its ground state is fully defined by its electron density distribution. This connection is made via the exact functional for the energy, which minimizes at the exact density. For years, DFT development focused on energies, implicitly assuming that functionals producing better energies become better approximations of the exact functional. We examined the other side of the coin: the energy-minimizing electron densities for atomic species, as produced by 128 historical and modern DFT functionals...
January 6, 2017: Science
https://www.readbyqxmd.com/read/28054813/who-believes-in-the-gambler-s-fallacy-and-why
#10
George D Farmer, Paul A Warren, Ulrike Hahn
Humans possess a remarkable ability to discriminate structure from randomness in the environment. However, this ability appears to be systematically biased. This is nowhere more evident than in the Gambler's Fallacy (GF)-the mistaken belief that observing an increasingly long sequence of "heads" from an unbiased coin makes the occurrence of "tails" on the next trial ever more likely. Although the GF appears to provide evidence of "cognitive bias," a recent theoretical account (Hahn & Warren, 2009) has suggested the GF might be understandable if constraints on actual experience of random sources (such as attention and short term memory) are taken into account...
January 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28051060/experimental-observation-of-anomalous-topological-edge-modes-in-a-slowly-driven-photonic-lattice
#11
Sebabrata Mukherjee, Alexander Spracklen, Manuel Valiente, Erika Andersson, Patrik Öhberg, Nathan Goldman, Robert R Thomson
Topological quantum matter can be realized by subjecting engineered systems to time-periodic modulations. In analogy with static systems, periodically driven quantum matter can be topologically classified by topological invariants, whose non-zero value guarantees the presence of robust edge modes. In the high-frequency limit of the drive, topology is described by standard topological invariants, such as Chern numbers. Away from this limit, these topological numbers become irrelevant, and novel topological invariants must be introduced to capture topological edge transport...
January 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28050616/ligand-core-nlo-phores-a-combined-experimental-and-theoretical-approach-to-the-two-photon-absorption-and-two-photon-excited-emission-properties-of-small-ligated-silver-nanoclusters
#12
Isabelle Russier-Antoine, Franck Bertorelle, Nathalie Calin, Željka Sanader, Marjan Krstić, Clothilde Comby-Zerbino, Philippe Dugourd, Pierre-François Brevet, Vlasta Bonačić-Koutecký, Rodolphe Antoine
We report a combined experimental and theoretical study of the two-photon absorption and excited emission properties of monodisperse ligand stabilized Ag11, Ag15 and Ag31 nanoclusters in aqueous solutions. The nanoclusters were synthesized using a cyclic reduction under oxidative conditions and separated by vertical gel electrophoresis. The two-photon absorption cross-sections of these protected noble metal nanoclusters measured within the biologically attractive 750-900 nm window are several orders of magnitude larger than that reported for commercially available standard organic dyes...
January 4, 2017: Nanoscale
https://www.readbyqxmd.com/read/28048952/adherens-junctions-modulate-diffusion-between-epithelial-cells-in-trichoplax-adhaerens
#13
Carolyn L Smith, Thomas S Reese
Trichoplax adhaerens is the sole named member of Placozoa, an ancient metazoan phylum. This coin-shaped animal glides on ventral cilia to find and digest algae on the substrate. It has only six cell types, all but two of which are incorporated into the epithelium that encloses it. The upper epithelium is thin, composed of a pavement of relatively large polygonal disks, each bearing a cilium. The lower epithelium is thick and composed primarily of narrow ciliated cells that power locomotion. Interspersed among these cells are two different secretory cells: one containing large lipophilic granules that, when released, lyse algae under the animal; the other, less abundant, is replete with smaller secretory granules containing neuropeptides...
December 2016: Biological Bulletin
https://www.readbyqxmd.com/read/28046874/su-f-p-46-comparative-study-between-two-normalization-prescriptions-for-accelerated-partial-breast-irradiation-a-dosimetric-study
#14
P Agarwal, D Sharma, A Gandhi, A Binjola, V Subramani, S Chander
PURPOSE: To compare the Accelerated Partial Breast Irradiation (APBI) plan with the normalized basal dose points and 5mm box prescription. METHODS: Five patients of APBI were planned twice in Oncentra Master planning TPS (Version 4.3) using TG-43 algorithm. The number of catheters for all the patients was 10 to 16 and implant plane 2 to 3. For planning all catheters were reconstructed. Source loading was done as per HR-CTV contoured. The HR-CTV volume range was from 75cc to 182cc...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28038440/the-effect-of-limited-cognitive-resources-on-communication-disturbances-in-serious-mental-illness
#15
P Le Thanh, Gina M Najolia, Kyle S Minor, Alex S Cohen
Semantically incoherent speech is a pernicious clinical feature of serious mental illness (SMI). The precise mechanisms underlying this deficit remain unclear. Prior studies have found that arousal of negative emotion exaggerates the severity of these communication disturbances; this has been coined "affective reactivity". Recent research suggests that "cognitive reactivity" may also occur, namely reflecting reduced "on-line" cognitive resources in SMI. We tested the hypothesis that communication disturbances manifest as a function of limited cognitive resources in SMI above and beyond that associated with state affectivity...
December 20, 2016: Psychiatry Research
https://www.readbyqxmd.com/read/28038330/the-effects-of-a-simultaneous-cognitive-or-motor-task-on-the-kinematics-of-walking-in-older-fallers-and-non-fallers
#16
Renato Campos Freire Júnior, Jaqueline Mello Porto, Nise Ribeiro Marques, Paola Errera Magnani, Daniela Cristina Carvalho de Abreu
Human gait has been widely investigated under dual-task conditions because it has been demonstrated to be an important way to uncover differences in gait biomechanics between older fallers and non-fallers. However, exactly how simultaneous tasks affect the kinematics of walking remains unclear. In the present study, gait kinematic properties of older fallers and non-fallers were compared under cognitive and motor dual-task conditions. The gait kinematic properties of interest were recorded under three different conditions: walking at preferred speed, walking when performing a cognitive task (naming animals), and walking when performing a motor task (transferring a coin from one pocket to the other)...
December 27, 2016: Human Movement Science
https://www.readbyqxmd.com/read/28034973/opioid-induced-constipation-and-bowel-dysfunction-a-clinical-guideline
#17
Stefan Müller-Lissner, Gabrio Bassotti, Benoit Coffin, Asbjørn Mohr Drewes, Harald Breivik, Elon Eisenberg, Anton Emmanuel, Françoise Laroche, Winfried Meissner, Bart Morlion
OBJECTIVE:  To formulate timely evidence-based guidelines for the management of opioid-induced bowel dysfunction. SETTING:  Constipation is a major untoward effect of opioids. Increasing prescription of opioids has correlated to increased incidence of opioid-induced constipation. However, the inhibitory effects of opioids are not confined to the colon, but also affect higher segments of the gastrointestinal tract, leading to the coining of the term "opioid-induced bowel dysfunction...
December 29, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28033311/cdc-grand-rounds-chronic-fatigue-syndrome-advancing-research-and-clinical-education
#18
Elizabeth R Unger, Jin-Mann Sally Lin, Dana J Brimmer, Charles W Lapp, Anthony L Komaroff, Avindra Nath, Susan Laird, John Iskander
Chronic fatigue syndrome (CFS) is a complex and serious illness that is often misunderstood. Experts have noted that the terminology "chronic fatigue syndrome" can trivialize this illness and stigmatize persons who experience its symptoms (1). The name was coined by a group of clinicians convened by CDC in the late 1980s to develop a research case definition for the illness, which, at the time, was called chronic Epstein-Barr virus syndrome. The name CFS was suggested because of the characteristic persistent fatigue experienced by all those affected and the evidence that acute or reactivated Epstein-Barr virus infection was not associated with many cases (2)...
December 30, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28029531/a-novel-risk-model-including-vascular-access-site-for-predicting-30-day-mortality-after-primary-pci-the-alpha-score
#19
Istvan Hizoh, Zalan Gulyas, Dominika Domokos, Gyongyver Banhegyi, Zsuzsanna Majoros, Laszlo Major, Timea Ratkai, Robert Gabor Kiss
BACKGROUND: The mortality benefit of transradial primary PCI has been shown by several studies. Previous risk models have not considered access site as a candidate predictor and many of them were developed using low risk populations of randomized trials. We conducted a prospective cohort study to construct and validate an admission risk model including access site as candidate variable for predicting 30-day mortality after primary PCI. METHODS: We analyzed data of 1255 patients using variables readily available at presentation...
October 14, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/28026165/long-lasting-nb2o5-based-nanocomposite-materials-for-li-ion-storage
#20
Min Yeong Song, Na Rae Kim, Hyeon Ji Yoon, Se Youn Cho, Hyoung-Joon Jin, Young Soo Yun
Advanced nanostructured hybrid materials can help us overcome the electrochemical performance limitations of current energy storage devices. In this study, three-dimensional porous carbon nanowebs (3D-CNWs) with numerous included orthorhombic Nb2O5 (T-Nb2O5) nanoparticles were fabricated using a microbe-derived nanostructure. The 3D-CNW/T-Nb2O5 nanocomposites showed an exceptionally stable long-term cycling performance over 70 000 cycles, a high reversible capacity of ∼125 mA h g(-1), and fast Li-ion storage kinetics in a coin-type two-electrode system using Li metal...
January 10, 2017: ACS Applied Materials & Interfaces
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