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https://www.readbyqxmd.com/read/28870018/exploring-the-pros-and-cons-of-mechanistic-case-diagrams-for-problem-based-learning
#1
Minjeong Kim, Bong Jin Kang
PURPOSE: Mechanistic case diagram (MCD) was recommended for increasing the depth of understanding of disease, but with few articles on its specific methods. We address the experience of making MCD in the fullest depth to identify the pros and cons of using MCDs in such ways. METHODS: During problem-based learning, we gave guidelines of MCD for its mechanistic exploration from subcellular processes to clinical features, being laid out in as much detail as possible...
September 2017: Korean Journal of Medical Education
https://www.readbyqxmd.com/read/28758640/manifestation-of-hopping-conductivity-and-granularity-within-phase-diagrams-of-lao1-x-f-x-bis2-sr1-x-la-x-fbis2-and-related-bis2-based-compounds
#2
R Arouca, M B Silva Neto, C M Chaves, M Nagao, S Watauchi, I Tanaka, M ElMassalami
Layered BiS [Formula: see text] -based series, such as LaO [Formula: see text] F [Formula: see text] BiS [Formula: see text] and Sr [Formula: see text] La [Formula: see text] FBiS [Formula: see text] , offer ideal examples for studying normal and superconducting phase diagram of a solid solution that evolves from a nonmagnetic band-insulator parent. We constructed typical [Formula: see text] phase diagrams of these systems based on events occurring in thermal evolution of their electrical resistivity, [Formula: see text]...
September 6, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28698352/frequency-and-preventative-interventions-for-non-suicidal-self-injury-and-suicidal-behaviour-in-primary-school-age-children-a-scoping-review-protocol
#3
Danai Bem, Charlotte Connor, Colin Palmer, Sunita Channa, Max Birchwood
INTRODUCTION: Non-suicidal self-injury (NSSI) and suicidal behaviour have been witnessed in children as young as 6-7 years of age, but while there are many reviews of preventative interventions for NSSI and suicide in adolescents, few have explored its prevalence in younger children and the potential impact of preventative interventions at this stage of life. NSSI and suicidal behaviour are an increasing concern in schools but school-based programmes can improve knowledge, attitudes and help-seeking behaviours and help prevent escalation of NSSI and later suicide...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28664249/hydrogeochemistry-study-and-groundwater-quality-assessment-in-the-north-of-isfahan-iran
#4
Ali Rezaei, Hossein Hassani
This study presents the groundwater quality assessment in the north of Isfahan, Iran. In the study area, assessment and measurement of groundwater hydrochemical parameters such as pH, total dissolved solids (TDS), electrical conductivity (EC), sodium absorption ratio (SAR), total hardness, major cations (K(+), Na(+), Ca(2+) and Mg(2+)) and major anions (Cl(-), [Formula: see text] and [Formula: see text]) concentrations were performed. Accordingly, the 66 water samples from different locations were collected during April and May 2015...
June 29, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28327186/clinical-behavioural-and-pharmacogenomic-factors-influencing-the-response-to-levothyroxine-therapy-in-patients-with-primary-hypothyroidism-protocol-for-a-systematic-review
#5
Rosie Dew, Onyebuchi Okosieme, Colin Dayan, Vinay Eligar, Ishrat Khan, Salman Razvi, Simon Pearce, Scott Wilkes
BACKGROUND: Suboptimal thyroid hormone therapy including under-replacement and over-replacement is common amongst patients with hypothyroidism. This is a significant health concern as affected patients are at risk of adverse cardiovascular or metabolic consequences. Despite a growing body of evidence on the effects of various factors on thyroid hormone replacement, a systematic appraisal of the evidence is lacking. This review aims to appraise and quantify the extent to which clinical, behavioural and pharmacogenomic factors affect levothyroxine therapy in patients with primary hypothyroidism...
March 21, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28081002/symmetry-analysis-of-transport-properties-in-helical-superconductor-junctions
#6
Qiang Cheng, Yinhan Zhang, Kunhua Zhang, Biao Jin, Changlian Zhang
We study the discrete symmetries satisfied by helical p-wave superconductors with the d-vectors [Formula: see text] or [Formula: see text] and the transformations brought by symmetry operations to ferromagnet and spin-singlet superconductors, which show intimate associations with the transport properties in heterojunctions, including helical superconductors. In particular, the partial symmetries of the Hamiltonian under spin-rotation and gauge-rotation operations are responsible for the novel invariances of the conductance in tunnel junctions and the new selection rules for the lowest current and peculiar phase diagrams in Josephson junctions, which were reported recently...
March 1, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28062516/systems-thinking-in-public-health-a-bibliographic-contribution-to-a-meta-narrative-review
#7
Saad Chughtai, Karl Blanchet
Background: Research across the formal, natural and social sciences has greatly expanded our knowledge about complex systems in recent decades, informing a broadly inclusive, cross-disciplinary conceptual framework referred to as Systems Thinking (ST). Its use in public health is rapidly increasing, although there remains a poor understanding of how these ideas have been imported, adapted and elaborated by public health research networks worldwide. Method: This review employed a mixed methods approach to narrate the development of ST in public health...
May 1, 2017: Health Policy and Planning
https://www.readbyqxmd.com/read/27810865/graphics-and-statistics-for-cardiology-data-visualisation-for-meta-analysis
#8
REVIEW
Amit Kiran, Abel Pérez Crespillo, Kazem Rahimi
Graphical displays play a pivotal role in understanding data sets and disseminating results. For meta-analysis, they are instrumental in presenting findings from multiple studies. This report presents guidance to authors wishing to submit graphical displays as part of their meta-analysis to a clinical cardiology journal, such as HeartWhen using graphical displays for meta-analysis, we recommend the following: Use a flow diagram to describe the number of studies returned from the initial search, the inclusion/exclusion criteria applied and the final number of studies used in the meta-analysis...
January 1, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27792667/crossover-from-one-to-three-dimensional-behavior-in-the-s%C3%A2-%C3%A2-%C3%A2-%C3%A2-1-2-heisenberg-antiferromagnet-cu-n2h5-2-so4-2
#9
A Paduan-Filho, A P Vieira, J G A Ramon, R S Freitas
From experimental and theoretical analyses of magnetic and specific-heat properties, we present the complete magnetic phase diagram of the quasi-1D antiferromagnet Cu(N2H5)2(SO4)2. On cooling and at zero magnetic field this compound enters a 1D regime with short-range magnetic correlations, marked by a broad maximum in the specific heat and magnetic susceptibility at [Formula: see text] K, followed by a tridimensional antiferromagnetically ordered phase below [Formula: see text] K induced by small interchain couplings...
October 28, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/27752930/3d-shape-analysis-to-reduce-false-positives-for-lung-nodule-detection-systems
#10
Antonio Oseas de Carvalho Filho, Aristófanes Corrêa Silva, Anselmo Cardoso de Paiva, Rodolfo Acatauassú Nunes, Marcelo Gattass
Using images from the Image Database Consortium and Image Database Resource Initiative (LIDC-IDRI), we developed a methodology for classifying lung nodules. The proposed methodology uses image processing and pattern recognition techniques. To classify volumes of interest into nodules and non-nodules, we used shape measurements only, analyzing their shape using shape diagrams, proportion measurements, and a cylinder-based analysis. In addition, we use the support vector machine classifier. To test the proposed methodology, it was applied to 833 images from the LIDC-IDRI database, and cross-validation with k-fold, where [Formula: see text], was used to validate the results...
August 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/27687114/non-invasive-positive-pressure-ventilation-for-acute-asthma-in-children
#11
REVIEW
Steven Kwasi Korang, Joshua Feinberg, Jørn Wetterslev, Janus C Jakobsen
BACKGROUND: Asthma is one of the most common reasons for hospital admission among children and constitutes a significant economic burden. Use of non-invasive positive pressure ventilation (NPPV) in the care of children with acute asthma has increased even though evidence supporting the intervention has been considered weak and clinical guidelines do not recommend the intervention. NPPV might be an effective intervention for acute asthma, but no systematic review has been conducted to assess the effects of NPPV as an add-on therapy to usual care in children with acute asthma...
September 30, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27489732/parametric-and-working-fluid-analysis-of-a-combined-organic-rankine-vapor-compression-refrigeration-system-activated-by-low-grade-thermal-energy
#12
B Saleh
The potential use of many common hydrofluorocarbons and hydrocarbons as well as new hydrofluoroolefins, i.e. R1234yf and R1234ze(E) working fluids for a combined organic Rankine cycle and vapor compression refrigeration (ORC-VCR) system activated by low-grade thermal energy is evaluated. The basic ORC operates between 80 and 40 °C typical for low-grade thermal energy power plants while the basic VCR cycle operates between 5 and 40 °C. The system performance is characterized by the overall system coefficient of performance (COPS) and the total mass flow rate of the working fluid for each kW cooling capacity ([Formula: see text])...
September 2016: Journal of Advanced Research
https://www.readbyqxmd.com/read/27256285/synthesis-and-optoelectronic-properties-of-thiophene-donor-and-thiazole-acceptor-based-blue-fluorescent-conjugated-oligomers
#13
K Mahesh, S Karpagam
We report on the synthesis and characterization of low band gap, blue light emitting and thermal stable conjugated oligomer by Wittig condensation. Thiophene and thiazole type of donor-acceptor based series of conjugated oligomers, Oligo-4,5-bis-[2-[5-[2-thiophene-2-yl-vinyl]thiophene-2-yl]-vinyl]-thiazole (OBTV-TZ) and Oligo-2,4,5-Tris-[2-[5-[2-thiophene-2-yl-vinyl]thiophene-2-yl]-vinyl]-thiazole (OTTV-TZ) were synthesized. These oligomers were confirmed by FT-IR and (1)H-NMR and LC/MS analysis. The effect of the number of thiophene rings on the optical, electrochemical, thermal and morphological properties of the oligomers were systematically investigated...
July 2016: Journal of Fluorescence
https://www.readbyqxmd.com/read/26971785/reduction-of-delay-in-detecting-initial-dips-from-functional-near-infrared-spectroscopy-signals-using-vector-based-phase-analysis
#14
Keum-Shik Hong, Noman Naseer
In this paper, we present a systematic method to reduce the time lag in detecting initial dips using a vector-based phase diagram and an autoregressive moving average with exogenous signals (ARMAX) model-based q-step-ahead prediction algorithm. With functional near-infrared spectroscopy (fNIRS), signals related to mental arithmetic and right-hand clenching are acquired from the prefrontal and left primary motor cortices, respectively. The interrelationship between oxygenated hemoglobin, deoxygenated hemoglobin, total hemoglobin and cerebral oxygen exchange are related to initial dips...
May 2016: International Journal of Neural Systems
https://www.readbyqxmd.com/read/26683210/mn-vacancy-defects-grain-boundaries-and-a-phase-stability-of-helimagnet-mnsi
#15
T Y Ou-Yang, G J Shu, J-Y Lin, C D Hu, F C Chou
Mn vacancy defect and grain size are shown to modify the magnetic phase diagram of MnSi significantly, especially near the critical regime of A-phase (skyrmion lattice) formation and the helimagnetic phase transition. Crystals grown using controlled nonstoichiometric initial precursors creates both grain boundaries and intrinsic Mn vacancy defect of various levels in MnSi. The results of combined transport, specific heat, and AC spin susceptibility measurements are compared for MnSi single crystal samples of various manganese deficiency levels and grain sizes...
January 20, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/26656943/structure-and-superconductivity-of-li1-x-fe-x-ohfese-single-crystals-grown-using-a-x-fe2-y-se2-a%C3%A2-%C3%A2-%C3%A2-%C3%A2-k-rb-and-cs-as-precursors
#16
G Yu, G Y Zhang, G H Ryu, C T Lin
We present results on the hydrothermal growth of ([Formula: see text])OHFeSe single crystals using floating-zone-grown [Formula: see text] (A  =  K, Rb, and Cs) as precursors. The growth proceeds by the hydrothermal ion exchange of Li/Fe-O-H for K, Rb, and Cs, resulting in a stacking layer of ([Formula: see text])OH sandwiched between the FeSe layers. Optimal growth parameters are achieved using high quality A 0.80Fe1.81Se2 single crystals added to the mixtures of LiOH, H2O, Fe and C(NH2)2Se in an autoclave and subsequently heated to 120 °C for 2 d, to obtain highest quality single crystals...
January 13, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/26627207/hydrogeochemical-investigations-and-groundwater-quality-assessment-of-torbat-zaveh-plain-khorasan-razavi-iran
#17
M J Nematollahi, P Ebrahimi, M Razmara, A Ghasemi
Hydrogeochemical investigations of groundwater in Torbat-Zaveh plain have been carried out to assess the water quality for drinking and irrigation purposes. In this study, 190 groundwater samples were collected and analyzed for physicochemical parameters and major ion concentrations. The abundance of major cations and anions was in the following order: Na(+) > Mg(2+) > Ca(2+) > K(+), and Cl(-) > [Formula: see text] > [Formula: see text] > [Formula: see text]. As a result, alkaline element (Na(+)) exceeds alkaline earth elements (Mg(2+) and Ca(2+)), and strong acids (Cl(-) and [Formula: see text]) dominate weak acids ([Formula: see text] and [Formula: see text]) in majority of the groundwater samples...
January 2016: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/26608606/systematic-analysis-of-structural-and-spectroscopic-properties-of-neptunimine-hn-nph2-and-plutonimine-hn-puh2
#18
Peng Li, Wenxia Niu, Tao Gao
The structures, stabilities, nature of bonding, and spectroscopic properties of the new actinide imine molecules, neptunimine (HN=NpH2) and plutonimine (HN=PuH2), in the gas phase have been systematically explored at different levels of theory. Our calculation indicates that HN=AnH2 (An=Np, Pu) should be nonplanar and have a quartet ([Formula: see text]) and quintet ([Formula: see text]) ground state, respectively. The nature of the chemical bonding in these molecules were investigated by employing topological methods including electron localization function (ELF), atoms in molecules (AIM) as well as natural bond orbital analysis (NBO)...
December 2015: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/26593408/magnetic-phase-diagram-of-superantiferromagnetic-tbcu%C3%A2-nanoparticles
#19
C Echevarria-Bonet, D P Rojas, J I Espeso, J Rodríguez Fernández, M de la Fuente Rodríguez, L Fernández Barquín, L Rodríguez Fernández, P Gorria, J A Blanco, M L Fdez-Gubieda, E Bauer, F Damay
The structural state and static and dynamic magnetic properties of TbCu2 nanoparticles are reported to be produced by mechanical milling under inert atmosphere. The randomly dispersed nanoparticles as detected by TEM retain the bulk symmetry with an orthorhombic Imma lattice and Tb and Cu in the 4e and 8h positions, respectively. Rietveld refinements confirm that the milling produces a controlled reduction of particle sizes reaching ≃6 nm and an increase of the microstrain up to ≃0.6%. The electrical resistivity indicates a metallic behavior and the presence of a magnetic contribution to the electronic scattering which decreases with milling times...
December 16, 2015: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/26583286/toxicity-assessment-and-geochemical-model-of-chromium-leaching-from-aod-slag
#20
Bao Liu, Junguo Li, Yanan Zeng, Ziming Wang
AOD (Argon Oxygen Decarburization) slag is a by-product of the stainless steel refining process. The leaching toxicity of chromium from AOD slag cannot be ignored in the recycling process of the AOD slag. To assess the leaching toxicity of the AOD slag, batch leaching tests have been performed. PHREEQC simulations combined with FactSage were carried out based on the detailed mineralogical analysis and petrophysical data. Moreover, Pourbaix diagram of the Cr-H2O system was protracted by HSC 5.0 software to explore the chromium speciation in leachates...
February 2016: Chemosphere
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