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https://www.readbyqxmd.com/read/28228739/touchscreen-tablets-coordinating-action-and-perception-for-mathematical-cognition
#1
Carolien A C G Duijzer, Shakila Shayan, Arthur Bakker, Marieke F Van der Schaaf, Dor Abrahamson
Proportional reasoning is important and yet difficult for many students, who often use additive strategies, where multiplicative strategies are better suited. In our research we explore the potential of an interactive touchscreen tablet application to promote proportional reasoning by creating conditions that steer students toward multiplicative strategies. The design of this application (Mathematical Imagery Trainer) was inspired by arguments from embodied-cognition theory that mathematical understanding is grounded in sensorimotor schemes...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28228029/predicting-low-temperature-free-energy-landscapes-with-flat-histogram-monte-carlo-methods
#2
Nathan A Mahynski, Marco A Blanco, Jeffrey R Errington, Vincent K Shen
We present a method for predicting the free energy landscape of fluids at low temperatures from flat-histogram grand canonical Monte Carlo simulations performed at higher ones. We illustrate our approach for both pure and multicomponent systems using two different sampling methods as a demonstration. This allows us to predict the thermodynamic behavior of systems which undergo both first order and continuous phase transitions upon cooling using simulations performed only at higher temperatures. After surveying a variety of different systems, we identify a range of temperature differences over which the extrapolation of high temperature simulations tends to quantitatively predict the thermodynamic properties of fluids at lower ones...
February 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28227779/revealing-oral-medication-patterns-from-reconstructed-long-term-medication-history-of-type-2-diabetes
#3
Purnomo Husnul Khotimah, Yuichi Sugiyama, Masatoshi Yoshikawa, Akihiro Hamasaki, Kazuya Okamoto, Tomohiro Kuroda, Purnomo Husnul Khotimah, Yuichi Sugiyama, Masatoshi Yoshikawa, Akihiro Hamasaki, Kazuya Okamoto, Tomohiro Kuroda, Kazuya Okamoto, Purnomo Husnul Khotimah, Yuichi Sugiyama, Akihiro Hamasaki, Masatoshi Yoshikawa, Tomohiro Kuroda
With the growing attention to evidence-based medical guideline development, longitudinal analysis of Electronic Medical Records (EMR) has become a good tool for providing insight into and new knowledge on the existing therapy. For chronic diseases, longitudinal analysis of medication history plays a key role in reaching this goal. However, raw medication data in EMR are not suitable for longitudinal analysis for several reasons. First, many prescriptions have a short duration. Second, the prescription duration may have a gap or overlap with other prescription durations...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226571/cuff-less-ppg-based-continuous-blood-pressure-monitoring-a-smartphone-based-approach
#4
Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Aman Gaurav, Maram Maheedhar, Vijay N Tiwari, Rangavittal Narayanan, Maram Maheedhar, Rangavittal Narayanan, Vijay N Tiwari, Aman Gaurav
Cuff-less estimation of systolic (SBP) and diastolic (DBP) blood pressure is an efficient approach for non-invasive and continuous monitoring of an individual's vitals. Although pulse transit time (PTT) based approaches have been successful in estimating the systolic and diastolic blood pressures to a reasonable degree of accuracy, there is still scope for improvement in terms of accuracies. Moreover, PTT approach requires data from sensors placed at two different locations along with individual calibration of physiological parameters for deriving correct estimation of systolic and diastolic blood pressure (BP) and hence is not suitable for smartphone deployment...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28223868/assessment-of-novel-oral-anticoagulant-use-within-a-community-teaching-hospital
#5
Sultan Alghadeer, Lori Hornsby
: Background: Novel oral anticoagulants (NOACs) are considered to be at least as effective and safe as warfarin with several advantages such as predictable pharmacokinetics, allowing for standardized dosing without monitoring, a lack of food interactions and fewer drug interactions; however, their misuse could potentially result in patient harm. Objective: To evaluate the appropriate use of the NOACs within a community teaching hospital. SETTING: A community teaching hospital in the United States...
January 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28216669/role-of-relativity-in-high-pressure-phase-transitions-of-thallium
#6
Komsilp Kotmool, Sudip Chakraborty, Thiti Bovornratanaraks, Rajeev Ahuja
We demonstrate the relativistic effects in high-pressure phase transitions of heavy element thallium. The known first phase transition from h.c.p. to f.c.c. is initially investigated by various relativistic levels and exchange-correlation functionals as implemented in FPLO method, as well as scalar relativistic scheme within PAW formalism. The electronic structure calculations are interpreted from the perspective of energetic stability and electronic density of states. The full relativistic scheme (FR) within L(S)DA performs to be the scheme that resembles mostly with experimental results with a transition pressure of 3 GPa...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210731/pressure-driven-phase-transition-mechanisms-revealed-by-quantum-chemistry-l-serine-polymorphs
#7
Denis A Rychkov, Jernej Stare, Elena V Boldyreva
The present study delivers a computational approach for the understanding of the mechanism of phase transitions between polymorphs of small organic molecules. By using state of the art periodic DFT calculations augmented with dispersion corrections and an external stress tensor together with gas-phase cluster calculations, we thoroughly explained the reversible phase transitions of three polymorphs of the model system, namely crystalline l-serine in the pressure range up to 8 GPa. This study has shown that at the macroscopic level the main driving force of the phase transitions is the decrease in the volume of the crystal unit cell, which contributes to the enthalpy difference between the two forms, but not to the difference in their internal crystal energies...
February 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28208405/translational-diffusion-across-a-free-standing-smectic-film-above-the-bulk-smectic-a-isotropic-transition-temperature
#8
Izabela Śliwa, A V Zakharov
Calculations of translational self-diffusion coefficient in free-standing smectic films during a series of layer-thinning transitions as the temperature is raised above the bulk smectic-A-isotropic transition have been carried out. A molecular model based upon the random walk theory is applied for calculating the translational diffusion coefficient (TDC) D_{∥} across the smectic film both in the bulk of the film, as well as in the vicinity of the bounding surfaces. Calculations of D_{∥} require the set of the orientational and translational order parameters (OPs) which have been obtained by using the extended McMillan approach with anisotropic forces...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28202180/chemical-structure-influence-on-napl-mixture-nonideality-evolution-rate-limited-dissolution-and-contaminant-mass-flux
#9
Mark C Padgett, Geoffrey R Tick, Kenneth C Carroll, William R Burke
The influence of chemical structure on NAPL mixture nonideality evolution, rate-limited dissolution, and contaminant mass flux was examined. The variability of measured and UNIFAC modeled NAPL activity coefficients as a function of mole fraction was compared for two NAPL mixtures containing structurally-different contaminants of concern including toluene (TOL) or trichloroethene (TCE) within a hexadecane (HEXDEC) matrix. The results showed that dissolution from the NAPL mixtures transitioned from ideality for mole fractions >0...
February 3, 2017: Journal of Contaminant Hydrology
https://www.readbyqxmd.com/read/28199856/predicting-solubilisation-features-of-ternary-phase-diagrams-of-fully-dilutable-lecithin-linker-microemulsions
#10
Mehdi Nouraei, Edgar J Acosta
Fully dilutable microemulsions (μEs), used to design self-microemulsifying delivery system (SMEDS), are formulated as concentrate solutions containing oil and surfactants, without water. As water is added to dilute these systems, various μEs are produced (water-swollen reverse micelles, bicontinuous systems, and oil-swollen micelles), without the onset of phase separation. Currently, the formulation dilutable μEs follows a trial and error approach that has had a limited success. The objective of this work is to introduce the use of the hydrophilic-lipophilic-difference (HLD) and net-average-curvature (NAC) frameworks to predict the solubilisation features of ternary phase diagrams of lecithin-linker μEs and the use of these predictions to guide the formulation of dilutable μEs...
February 1, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28197927/thermodynamics-and-reaction-mechanisms-of-decomposition-of-the-simplest-protonated-tripeptide-triglycine-a-guided-ion-beam-and-computational-study
#11
Abhigya Mookherjee, Michael J Van Stipdonk, P B Armentrout
We present a thorough characterization of fragmentations observed in threshold collision-induced dissociation (TCID) experiments of protonated triglycine (H(+)GGG) with Xe using a guided ion beam tandem mass spectrometer (GIBMS). Kinetic energy-dependent cross-sections for 10 ionic products are observed and analyzed to provide 0 K barriers for six primary products: [b2](+), [y1 + 2H](+), [b3](+), CO loss, [y2 + 2H](+), and [a1](+); three secondary products: [a2](+), [a3](+), and [y2 + 2H - CO](+); and two tertiary products: high energy [y1 + 2H](+) and [a2 - CO](+) after accounting for multiple ion-molecule collisions, internal energy of reactant ions, unimolecular decay rates, competition between channels, and sequential dissociations...
February 14, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28195584/live-birth-in-an-archosauromorph-reptile
#12
Jun Liu, Chris L Organ, Michael J Benton, Matthew C Brandley, Jonathan C Aitchison
Live birth has evolved many times independently in vertebrates, such as mammals and diverse groups of lizards and snakes. However, live birth is unknown in the major clade Archosauromorpha, a group that first evolved some 260 million years ago and is represented today by birds and crocodilians. Here we report the discovery of a pregnant long-necked marine reptile (Dinocephalosaurus) from the Middle Triassic (∼245 million years ago) of southwest China showing live birth in archosauromorphs. Our discovery pushes back evidence of reproductive biology in the clade by roughly 50 million years, and shows that there is no fundamental reason that archosauromorphs could not achieve live birth...
February 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28195528/sustainable-diets-within-sustainable-food-systems
#13
Alexandre Meybeck, Vincent Gitz
Sustainable diets and sustainable food systems are increasingly explored by diverse scientific disciplines. They are also recognised by the international community and called upon to orient action towards the eradication of hunger and malnutrition and the fulfilment of sustainable development goals. The aim of the present paper is to briefly consider some of the links between these two notions in order to facilitate the operationalisation of the concept of sustainable diet. The concept of sustainable diet was defined in 2010 combining two totally different perspectives: a nutrition perspective, focused on individuals, and a global sustainability perspective, in all its dimensions: environmental, economic and social...
February 2017: Proceedings of the Nutrition Society
https://www.readbyqxmd.com/read/28194817/need-for-adaptation-transformation-of-temporary-houses
#14
Elizabeth Wagemann
Building permanent accommodation after a disaster takes time for reasons including the removal of debris, the lack of available land, and the procurement of resources. In the period in-between, affected communities find shelter in different ways. Temporary houses or transitional shelters are used when families cannot return to their pre-disaster homes and no other alternative can be provided. In practice, families stay in a standard interim solution for months or even years while trying to return to their routines...
February 14, 2017: Disasters
https://www.readbyqxmd.com/read/28187260/mp4-study-of-the-anharmonic-coupling-of-the-shared-proton-stretching-vibration-of-the-protonated-water-dimer-in-equilibrium-and-transition-states
#15
George Pitsevich, Alexander Malevich, Ekaterina Kozlovskaya, Ekaterina Mahnach, Iryna Doroshenko, Valeriy Pogorelov, Lars G M Pettersson, Valdas Sablinskas, Vytautas Balevicius
The structure and harmonic- and anharmonic IR spectra of the protonated water dimer (PWD) were calculated in C1, C2 and CS symmetry at the MP4/acc-pVTZ level of theory. We found that structure and IR spectra are practically identical in C2 and C1 symmetry demonstrating that an equilibrium С1 configuration of the PWD is not realized. Anharmonic coupling of the shared proton stretching vibration with all other modes in the PWD in C2 and CS symmetry was the focus of this investigation. For this purpose 28 two-dimensional potential energy surfaces (2D PES) were built at the MP4/acc-pVTZ level of theory and the corresponding vibrational Schrödinger equations were solved using the DVR method...
February 10, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28182156/how-do-demographic-transitions-and-public-health-policies-affect-patients-with-parkinson-s-disease-in-brazil
#16
REVIEW
Tânia M Bovolenta, Andre C Felicio
Brazil is currently experiencing a significant demographic transition characterized by a decrease in fertility rates and an exponential increase in the number of elderly citizens, which presents a special challenge for the health care professionals. More than other portions of the population, the elderly are most commonly affected by chronic diseases such as Parkinson's disease. Policymakers contend that Brazil is reasonably well-prepared regarding elderly health care, with policies that aim to ensure the quality of life and the well-being of this portion of the population...
2017: Clinical Interventions in Aging
https://www.readbyqxmd.com/read/28181582/trapping-phenomenon-attenuates-the-consequences-of-tipping-points-for-limit-cycles
#17
Everton S Medeiros, Iberê L Caldas, Murilo S Baptista, Ulrike Feudel
Nonlinear dynamical systems may be exposed to tipping points, critical thresholds at which small changes in the external inputs or in the system's parameters abruptly shift the system to an alternative state with a contrasting dynamical behavior. While tipping in a fold bifurcation of an equilibrium is well understood, much less is known about tipping of oscillations (limit cycles) though this dynamics are the typical response of many natural systems to a periodic external forcing, like e.g. seasonal forcing in ecology and climate sciences...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28174145/-effect-of-herd-health-management-on-the-prevalence-of-postpartum-dysgalaktie-syndrome-ppds-and-the-treatment-incidence
#18
W Pendl, B Jenny, P R Torgerson, P Spring, D Kümmerlen, X Sidler
The Postpartum Dysgalaktie Syndrome (PPDS) also known as metritis agalactia mastitis (MMA), is considered the most common disease of the sow after farrowing. The reasons for PPDS are multifactorial and are to be found in the areas of management and hygiene, feeding, water supply and animal specific factors such as body condition and age of the sows. In this study a veterinary herd health management was carried out in 28 pig farms with PPDS, with the aim to reduce the PPDS prevalence and animal treatment incidence (TI)...
February 2017: Schweizer Archiv Für Tierheilkunde
https://www.readbyqxmd.com/read/28157365/scaling-of-tripartite-entanglement-at-impurity-quantum-phase-transitions
#19
Abolfazl Bayat
The emergence of a diverging length scale in many-body systems at a quantum phase transition implies that total entanglement has to reach its maximum there. In order to fully characterize this, one has to consider multipartite entanglement as, for instance, bipartite entanglement between individual particles fails to signal this effect. However, quantification of multipartite entanglement is very hard, and detecting it may not be possible due to the lack of accessibility to all individual particles. For these reasons it will be more sensible to partition the system into relevant subsystems, each containing a few to many spins, and study entanglement between those constituents as a coarse-grain picture of multipartite entanglement between individual particles...
January 20, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28156614/effect-of-discharge-to-subacute-rehabilitation-sar-on-hospitalized-patients-with-progressive-gastrointestinal-gi-cancer
#20
Anjali V Desai, Leonard Saltz
: 41 Background: SAR may be an alternative when hospice is declined. However, the outcomes of discharges to SAR in cancer patients with progressive (chemotherapy-refractory) disease are not known. We examined the characteristics and outcomes of patients with debility from progressive metastatic GI cancer who were discharged to SAR after an admission to our center. METHODS: An institutional electronic database was queried to identify patients of the GI medical oncology service of Memorial Sloan Kettering Cancer Center who had been discharged to a SAR facility...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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