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https://www.readbyqxmd.com/read/28435501/impact-of-clinical-decision-support-on-radiography-for-acute-ankle-injuries-a-randomized-trial
#1
Shahein Tajmir, Ali S Raja, Ivan K Ip, James Andruchow, Patricia Silveira, Stacy Smith, Ramin Khorasani
INTRODUCTION: While only 15-20% of patients with foot and ankle injuries presenting to urgent care centers have clinically significant fractures, most undergo radiography. We examined the impact of electronic point-of-care clinical decision support (CDS) on adherence to the Ottawa Ankle Rules (OAR), as well as use and yield of foot and ankle radiographs in patients with acute ankle injury. METHODS: We obtained institutional review board approval for this randomized controlled study performed April 18, 2012-December 15, 2013...
April 2017: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28432790/single-molecule-visualization-of-fast-polymerase-turnover-in-the-bacterial-replisome
#2
Jacob S Lewis, Lisanne M Spenkelink, Slobodan Jergic, Elizabeth A Wood, Enrico Monachino, Nicholas P Horan, Karl E Duderstadt, Michael M Cox, Andrew Robinson, Nicholas E Dixon, Antoine M van Oijen
The Escherichia coli DNA replication machinery has been used as a road map to uncover design rules that enable DNA duplication with high efficiency and fidelity. Although the enzymatic activities of the replicative DNA Pol III are well understood, its dynamics within the replisome are not. Here we test the accepted view that the Pol III holoenzyme remains stably associated within the replisome. We use in vitro single-molecule assays with fluorescently labeled polymerases to demonstrate that the Pol III* complex (holoenzyme lacking the β2 sliding clamp), is rapidly exchanged during processive DNA replication...
April 22, 2017: ELife
https://www.readbyqxmd.com/read/28432516/the-tower-of-london-tol-in-italy-standardization-of-the-tol-test-in-an-italian-population
#3
Maddalena Boccia, Dario Marin, Giovanni D'Antuono, Paola Ciurli, Chiara Incoccia, Gabriella Antonucci, Cecilia Guariglia, Laura Piccardi
Deficit in planning and problem-solving, affecting a wide range of neuropsychological patients, has been widely investigated using the Tower of London (ToL) test, as developed by Shallice (Philos Trans R Soc Lond Ser B Biol Sci 298:199-209, 1). The ToL taps on several executive functions (EF), such as planning, time for planning or rule breaks, which may be usefully indexed by different ToL measurements. However, in its original version, the different aspects involved in ToL are not evaluated in a specific way...
April 21, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28431109/performance-of-the-2015-acr-eular-classification-criteria-for-gout-in-a-primary-care-population-presenting-with-monoarthritis
#4
Hein J E M Janssens, Jaap Fransen, Matthijs Janssen, Tuhina Neogi, H Ralph Schumacher, Tim L Jansen, Nicola Dalbeth, William J Taylor
Objective.: To test the performance of the 2015 ACR-EULAR gout classification criteria against presence of SF MSU crystals in a primary healthcare population. Methods.: The criteria were applied to an existing dataset of consecutive patients with monoarthritis presenting to Dutch family physicians; all patients underwent microscopic SF analysis by design. The data had been prospectively collected to develop a diagnostic decision rule for gout in 2010. Diagnostic performance was assessed by calculating area under the receiver operating characteristic curve, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and constructing calibration plots for the full version of the criteria (including SF analysis results of all patients) and the clinical-only version (not including SF analysis results)...
April 20, 2017: Rheumatology
https://www.readbyqxmd.com/read/28430042/control-without-controllers-toward-a-distributed-neuroscience-of-executive-control
#5
Benjamin R Eisenreich, Rei Akaishi, Benjamin Y Hayden
Executive control refers to the regulation of cognition and behavior by mental processes and is a hallmark of higher cognition. Most approaches to understanding its mechanisms begin with the assumption that our brains have anatomically segregated and functionally specialized control modules. The modular approach is intuitive: Control is conceptually distinct from basic mental processing, so an organization that reifies that distinction makes sense. An alternative approach sees executive control as self-organizing principles of a distributed organization...
April 21, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28429646/rule-violations-sensitise-towards-negative-and-authority-related-stimuli
#6
Robert Wirth, Anna Foerster, Hannah Rendel, Wilfried Kunde, Roland Pfister
Rule violations have usually been studied from a third-person perspective, identifying situational factors that render violations more or less likely. A first-person perspective of the agent that actively violates the rules, on the other hand, is only just beginning to emerge. Here we show that committing a rule violation sensitises towards subsequent negative stimuli as well as subsequent authority-related stimuli. In a Prime-Probe design, we used an instructed rule-violation task as the Prime and a word categorisation task as the Probe...
April 21, 2017: Cognition & Emotion
https://www.readbyqxmd.com/read/28427713/on-the-efficiency-of-instruction-based-rule-encoding
#7
Hannes Ruge, Tatjana Karcz, Tony Mark, Victoria Martin, Katharina Zwosta, Uta Wolfensteller
Instructions have long been considered a highly efficient route to knowledge acquisition especially compared to trial-and-error learning. We aimed at substantiating this claim by identifying boundary conditions for such an efficiency gain, including the influence of active learning intention, repeated instructions, and working memory load and span. Our experimental design allowed us to not only assess how well the instructed stimulus-response (S-R) rules were implemented later on, but also to directly measure prior instruction encoding processes...
April 18, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28427416/shoulder-ultrasonography-performed-by-orthopedic-surgeons-increases-efficiency-in-diagnosis-of-rotator-cuff-tears
#8
Chih-Hao Chiu, Poyu Chen, Alvin Chao-Yu Chen, Kuo-Yao Hsu, Shih-Sheng Chang, Yi-Sheng Chan, Yeung-Jen Chen
BACKGROUND: Rotator cuff tears are very common and their incidence increases with age. Shoulder ultrasonography has recently gained popularity in detecting rotator cuff tears because of its efficiency, cost-effectiveness, time-saving, and real-time nature of the procedure. Well-trained orthopedic surgeons may utilize shoulder ultrasonography to diagnose rotator cuff tears. The wait time of patients planned to have shoulder MRI (magnetic resonance imaging) to rule in rotator cuff tears may decrease after orthopedic surgeon start doing shoulder ultrasonography as a screening tool for that...
April 20, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28427319/mechanobiological-modelling-of-tendons-review-and-future-opportunities
#9
Mark S Thompson, M Nazri Bajuri, Hanifeh Khayyeri, Hanna Isaksson
Tendons are adapted to carry large, repeated loads and are clinically important for the maintenance of musculoskeletal health in an increasing, actively ageing population, as well as in elite athletes. Tendons are known to adapt to mechanical loading. Also, their healing and disease processes are highly sensitive to mechanical load. Computational modelling approaches developed to capture this mechanobiological adaptation in tendons and other tissues have successfully addressed many important scientific and clinical issues...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28427015/apparent-anisotropy-of-adhesive-bonds-with-weak-adhesion-and-non-destructive-evaluation-of-interfacial-properties
#10
Emmanuel Siryabe, Mathieu Rénier, Anissa Meziane, Jocelyne Galy, Michel Castaings
The present research attempts to non-destructively characterize mechanical properties, which are representative of the interfacial adhesion and bond line cohesion of adhesively bonded assemblies, using an ultrasonic method. Eight bonded samples made of two aluminium substrates and of an epoxy-based adhesive layer were manufactured: four in which the adhesive is fully cured (100%) and four in which crosslinking is partial (80%). For each level of curing, four different surface treatments were applied to the aluminium substrates before assembling, in order to vary the quality of adhesion...
April 9, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28426763/individual-based-modelling-of-population-growth-and-diffusion-in-discrete-time
#11
Natalie Tkachenko, John D Weissmann, Wesley P Petersen, George Lake, Christoph P E Zollikofer, Simone Callegari
Individual-based models (IBMs) of human populations capture spatio-temporal dynamics using rules that govern the birth, behavior, and death of individuals. We explore a stochastic IBM of logistic growth-diffusion with constant time steps and independent, simultaneous actions of birth, death, and movement that approaches the Fisher-Kolmogorov model in the continuum limit. This model is well-suited to parallelization on high-performance computers. We explore its emergent properties with analytical approximations and numerical simulations in parameter ranges relevant to human population dynamics and ecology, and reproduce continuous-time results in the limit of small transition probabilities...
2017: PloS One
https://www.readbyqxmd.com/read/28426214/calix-5-arene-through-the-annulus-threading-of-dialkylammonium-guests-weakly-paired-to-the-tfpb-anion
#12
Margherita De Rosa, Carmen Talotta, Carmine Gaeta, Annunziata Soriente, Placido Neri, Sebastiano Pappalardo, Giuseppe Gattuso, Anna Notti, Melchiorre F Parisi, Ilenia Pisagatti
The through-the-annulus threading of calix[5]arene penta-O-ethers by dialkylammonium cations coupled to the loosely coordinating superweak TFPB- anion has been successfully accomplished. 1H NMR titration data show that the preorganization of the calix[5]arene scaffold leads to great thermodynamic stability of the pseudorotaxane complexes as well as to a favorable kinetic of threading. Accordingly, calix[5]arene 1c, bearing tert-butyl groups at the wide rim, was threaded by all the cations under study (with the exception of the dibenzylammonium 2b+) more tightly than the other derivatives under investigation (Kas up to 2...
April 20, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28425590/role-of-upper-gastrointestinal-contrast-studies-for-suspected-malrotation-in-neonatal-population
#13
Suresh Birajdar, Shripada C Rao, Fiona Bettenay
AIM: Upper gastrointestinal (UGI) contrast study is the preferred radiological investigation to diagnose malrotation of intestine. We aimed to review the role of UGI contrast in neonates (term and preterm) who were clinically suspected to have malrotation. METHODS: The study included a retrospective review of medical charts and radiology reports. RESULTS: A total of 164 newborn infants underwent UGI contrast study to rule out malrotation during the study period (2006-2015)...
April 20, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28421474/social-safeness-and-disordered-eating-exploring-underlying-mechanisms-of-body-appreciation-and-inflexible-eating
#14
Catarina Pinto, Cláudia Ferreira, Ana Laura Mendes, Inês A Trindade
Feelings of social safeness and connectedness have been associated with adaptive emotion regulation processes and well-being indicators. Further, literature has demonstrated that interpersonal experiences play an important role in the etiology and maintenance of body and eating psychopathology. However, the study of the role of social variables and emotion regulation processes in the engagement in inflexible eating rules and eating psychopathology is still in its early stages. The current study aims to fill some gaps within the literature and explore the mediator role of body appreciation and inflexible eating rules in the link between social safeness and disordered eating...
April 18, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28420601/what-older-people-like-to-play-genre-preferences-and-acceptance-of-casual-games
#15
Alvin Chesham, Patric Wyss, René Martin Müri, Urs Peter Mosimann, Tobias Nef
BACKGROUND: In recent computerized cognitive training studies, video games have emerged as a promising tool that can benefit cognitive function and well-being. Whereas most video game training studies have used first-person shooter (FPS) action video games, subsequent studies found that older adults dislike this type of game and generally prefer casual video games (CVGs), which are a subtype of video games that are easy to learn and use simple rules and interfaces. Like other video games, CVGs are organized into genres (eg, puzzle games) based on the rule-directed interaction with the game...
April 18, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28420490/are-herbarium-mosses-reliable-indicators-of-historical-nitrogen-deposition
#16
Tora Finderup Nielsen, Jesper Ruf Larsen, Anders Michelsen, Hans Henrik Bruun
Mosses collected decades ago and stored in herbaria are often used to assess historical nitrogen deposition. This method is effectively based on the assumption that tissue N concentration remains constant during storage. The present study raises serious doubt about the generality of that assumption. We measured tissue N and C concentrations as well as δ(15)N, δ(13)C, Pb and Mg in herbarium and present day samples of seven bryophyte species from six sites across Denmark. While an increase in nitrogen deposition during the last century is well-documented for the study site, we surprisingly found foliar N concentration to be higher in historical samples than in modern samples...
April 15, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28420275/beta-hebbian-learning-as-a-new-method-for-exploratory-projection-pursuit
#17
Héctor Quintián, Emilio Corchado
In this research, a novel family of learning rules called Beta Hebbian Learning (BHL) is thoroughly investigated to extract information from high-dimensional datasets by projecting the data onto low-dimensional (typically two dimensional) subspaces, improving the existing exploratory methods by providing a clear representation of data's internal structure. BHL applies a family of learning rules derived from the Probability Density Function (PDF) of the residual based on the beta distribution. This family of rules may be called Hebbian in that all use a simple multiplication of the output of the neural network with some function of the residuals after feedback...
March 16, 2017: International Journal of Neural Systems
https://www.readbyqxmd.com/read/28419318/double-exponential-fitting-function-for-evaluation-of-cosmic-ray-induced-neutron-fluence-rate-in-arbitrary-locations
#18
Huailiang Li, Yigang Yang, Qibiao Wang, Xianguo Tuo, Mark Julian Henderson, Jérémie Courtois
The fluence rate of cosmic-ray-induced neutrons (CRINs) varies with many environmental factors. While many current simulation and experimental studies have focused mainly on the altitude variation, the specific rule that the CRINs vary with geomagnetic cutoff rigidity (which is related to latitude and longitude) was not well considered. In this article, a double-exponential fitting function F=(A1e-A2CR+A3)eB1Al, is proposed to evaluate the CRINs' fluence rate varying with geomagnetic cutoff rigidity and altitude...
April 13, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28419193/a-randomized-phase-ii-iii-study-of-cabazitaxel-versus-vinflunine-in-metastatic-or-locally-advanced-transitional-cell-carcinoma-of-the-urothelium-secavin
#19
J Bellmunt, J M Kerst, F Vázquez, R Morales-Barrera, E Grande, A Medina, Mªb González Graguera, G Rubio, U Anido, O Fernández Calvo, E González-Billalabeitia, Ajm Van den Eertwegh, E Pujol, J L Perez-Gracia, J L González Larriba, R Collado, M Los, S Maciá, R De Wit
BACKGROUND: Despite the advent of immunotherapy in urothelial cancer, there is still a need to find effective cytotoxic agents beyond first and second line. Vinflunine is the only treatment approved in this setting by the European Medicines Agency (EMA) and taxanes are also widely used in second line. Cabazitaxel is a taxane with activity in docetaxel-refractory cancers. A randomized study was conducted to compare its efficacy vs vinflunine. PATIENTS AND METHODS: This is a multicenter, randomized, open-label, phase II/III study, following a Simon's optimal method with stopping rules based on an interim futility analysis and a formal efficacy analysis at the end of the phase II...
April 13, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28419019/complexities-of-consent-ethics-in-the-pediatric-emergency-department
#20
Naomi Dreisinger, Nathan Zapolsky
Informed consent is a communicative process of sharing information with patients, which helps assure their understanding of the information provided and asks for their permission to proceed. Informed consent allows a patient or a patient's family to use his or her own value system to determine the need for a particular procedure or test. Asking a patient for permission to treat requires the provider to respect the patient's autonomy through allowing him or her to be an active part of the decision-making process...
April 18, 2017: Pediatric Emergency Care
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