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https://www.readbyqxmd.com/read/27914216/synthesis-and-luminescence-characterization-of-y2-bazno5-re-re%C3%A2-%C3%A2-eu-3-tb-3-pr-3-and-sm-3-phosphors
#1
D R Taikar, C P Joshi, S V Moharil
Modified synthesis and luminescence of Y2 BaZnO5 phosphors activated with the rare earths (RE) Eu(3)(+) , Tb(3)(+) , Pr(3)(+) and Sm(3)(+) are reported. RE2 BaZnO5 phosphors have attracted attention because of their interesting magnetic and optical properties; and are usually prepared using a two-step solid-state reaction. In the first step, carbonates or similar precursors are thoroughly mixed and heated at 900°C to decompose them to oxides. To eliminate the unwanted phases like BaRE2 O4 , the resulting powders are reheated at 1100°C for a long time...
December 2, 2016: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/27913696/insights-gleaned-by-measuring-patients-stated-goals-for-dbs-more-than-tremor
#2
Cynthia S Kubu, Scott E Cooper, Andre Machado, Thomas Frazier, Jerrold Vitek, Paul J Ford
OBJECTIVE: To report prospective repeated measures data detailing the perceived benefit of deep brain stimulation (DBS) on the most commonly cited symptom and activity goals identified by patients with Parkinson disease. METHODS: Fifty-two participants were recruited from a consecutive series. Participants completed a semi-structured interview soliciting their symptom and behavioral goals and corresponding visual analog scales measuring perceived symptom severity and limits to goal attainment...
December 2, 2016: Neurology
https://www.readbyqxmd.com/read/27913211/sgrasp-a-graph-based-method-for-the-derivation-of-subject-specific-functional-parcellations-of-the-brain
#3
N Honnorat, T D Satterthwaite, R E Gur, R C Gur, C Davatzikos
BACKGROUND: Resting-state fMRI (rs-fMRI) has emerged as a prominent tool for the study of functional connectivity. The identification of the regions associated with the different brain functions has received significant interest. However, most of the studies conducted so far have focused on the definition of a common set of regions, valid for an entire population. The variation of the functional regions within a population has rarely been accounted for. New Method: In this paper, we propose sGraSP, a graph-based approach for the derivation of subject-specific functional parcellations...
November 29, 2016: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/27913067/the-financial-impact-of-clinic-no-show-rates-in-an-academic-pediatric-otolaryngology-practice
#4
Zhen Huang, Mariam Ashraf, Heather Gordish-Dressman, Pamela Mudd
PURPOSE: To investigate determinants of no-show rates in an academic pediatric otolaryngology practice including appointment time, age, sex, new patient status, payer mix, and median household income by zip code. MATERIALS AND METHODS: Retrospective chart review of clinic no-show rates and patient demographics in a free standing children's hospital and affiliated outpatient clinics across eight providers in a one-year period. RESULTS: Analysis shows that the overall no-show rate across all providers was 15% with the highest rate of 19% in the zip code with the lowest median income...
November 23, 2016: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/27910869/multiparameter-mechanical-and-morphometric-screening-of-cells
#5
Mahdokht Masaeli, Dewal Gupta, Sean O'Byrne, Henry T K Tse, Daniel R Gossett, Peter Tseng, Andrew S Utada, Hea-Jin Jung, Stephen Young, Amander T Clark, Dino Di Carlo
We introduce a label-free method to rapidly phenotype and classify cells purely based on physical properties. We extract 15 biophysical parameters from cells as they deform in a microfluidic stretching flow field via high-speed microscopy and apply machine-learning approaches to discriminate different cell types and states. When employing the full 15 dimensional dataset, the technique robustly classifies individual cells based on their pluripotency, with accuracy above 95%. Rheological and morphological properties of cells while deforming were critical for this classification...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910505/characterization-of-an-atomic-hydrogen-source-for-charge-exchange-experiments
#6
M A Leutenegger, P Beiersdorfer, G L Betancourt-Martinez, G V Brown, N Hell, R L Kelley, C A Kilbourne, E W Magee, F S Porter
We characterized the dissociation fraction of a thermal dissociation atomic hydrogen source by injecting the mixed atomic and molecular output of the source into an electron beam ion trap containing highly charged ions and recording the x-ray spectrum generated by charge exchange using a high-resolution x-ray calorimeter spectrometer. We exploit the fact that the charge exchange state-selective capture cross sections are very different for atomic and molecular hydrogen incident on the same ions, enabling a clear spectroscopic diagnostic of the neutral species...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909591/mobbing-exposure-of-anaesthesiology-residents-in-turkey
#7
Gülnihal Aykut, Esra Mercanoğlu Efe, Selcan Bayraktar, Sinem Şentürk, İrem Başeğmez, Özlem Özkumit, Elmas Kabak, Belgin Yavaşçaoğlu, Hülya Bilgin
OBJECTIVE: In recent years, psychological problems that are caused by working conditions, like burn out syndrome, are more commonly observed. In our study, we aimed to evaluate mobbing exposure, factors causing mobbing and precautions for mobbing in residency students who are educated in anaesthesiology and reanimation clinics in Turkey. METHODS: After obtaining consent from the ethics committee, we sent our questionnaires to the secretariats of the departments by postal mail...
August 2016: Turkish Journal of Anaesthesiology and Reanimation
https://www.readbyqxmd.com/read/27906611/on-evaluation-of-reliability-repeatability-and-reproducibility-of-instrumental-evaluation-methods-and-measurement-systems
#8
Samir Salah, Shein-Chung Chow, Fuyu Song
Validation of instrumental evaluation methods or measurement systems plays an important role in both pharmaceutical and cosmetic research and development. In practice, it is suggested that validation should be done according to performance characteristics as described in the United States Pharmacopedia and National Formulary (USP/NF, 2000) for analytical methods validation. A validated method or measurement system is expected to achieve a certain degree of accuracy and reliability. However, it is a concern whether the test results obtained are repeatable (with similar test samples) and/or reproducible (under similar but slightly different experimental conditions)...
December 1, 2016: Journal of Biopharmaceutical Statistics
https://www.readbyqxmd.com/read/27905588/phase-specific-dispersion-of-functional-nanoparticles-in-soft-nanocomposites-resulting-in-enhanced-electromagnetic-screening-ability-dominated-by-absorption
#9
Aishwarya V Menon, Giridhar Madras, Suryasarathi Bose
The effect of phase specific localisation of MWNTs (multiwalled carbon nanotubes) and magnetic FeNi (iron-nickel) alloy particles on bulk electrical conductivity and electromagnetic (EM) wave attenuation was investigated in biphasic co-continuous blends of PVDF/SMA (polyvinylidene fluoride/styrene maleic anhydride). It is envisaged that packing different functional nanoparticles in a given phase of a co-continuous blend can impede the charge transport phenomenon and the overall dispersion state. Therefore, phase specific localisation can facilitate the tuning of the functional properties in biphasic blends...
December 1, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27905322/synergistic-interactions-between-silver-decorated-graphene-and-carbon-nanotubes-yield-flexible-composites-to-attenuate-electromagnetic-radiation
#10
Shital Patangrao Pawar, Sachin Kumar, Shubham Jain, Mounika Gandi, Kaushik Chatterjee, Suryasarathi Bose
The need of today's highly integrated electronic devices, especially working in the GHz frequencies, is to protect them from unwanted interference from neighbouring devices. Hence, lightweight, flexible, easy to process microwave absorbers were designed here by dispersing conductive multiwall carbon nanotubes (MWNTs) and silver nanoparticles decorated onto two-dimensional graphene sheets (rGO@Ag) in poly(ε-caprolactone) (PCL). In this study, we have shown how dielectric losses can be tuned in the nanocomposites by rGO@Ag nano-hybrid; an essential criterion for energy dissipation within a material resulting in effective shielding of the incoming electromagnetic (EM) radiation...
December 1, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27905073/critical-comments-on-eeg-sensor-space-dynamical-connectivity-analysis
#11
Frederik Van de Steen, Luca Faes, Esin Karahan, Jitkomut Songsiri, Pedro A Valdes-Sosa, Daniele Marinazzo
Many different analysis techniques have been developed and applied to EEG recordings that allow one to investigate how different brain areas interact. One particular class of methods, based on the linear parametric representation of multiple interacting time series, is widely used to study causal connectivity in the brain. However, the results obtained by these methods should be interpreted with great care. The goal of this paper is to show, both theoretically and using simulations, that results obtained by applying causal connectivity measures on the sensor (scalp) time series do not allow interpretation in terms of interacting brain sources...
November 30, 2016: Brain Topography
https://www.readbyqxmd.com/read/27904076/amorphous-amorphous-phase-separation-of-freeze-concentrated-protein-and-amino-acid-excipients-for-lyophilized-formulations
#12
Ken-Ichi Izutsu, Hiroyuki Yoshida, Hiroko Shibata, Yukihiro Goda
The objective of this study was to elucidate the mixing state of proteins and amino acid excipients concentrated in the amorphous non-ice region of frozen solutions. Thermal analysis of frozen aqueous solutions was performed in heating scans before and after a heat treatment. Frozen aqueous solutions containing a protein (e.g., recombinant human albumin, gelatin) or a polysaccharide (dextran) and an amino acid excipient (e.g., L-arginine, L-arginine hydrochloride, L-arginine monophosphate, sodium L-glutamate) at varied mass ratios showed single or double Tg' (glass transition temperature of maximally freeze-concentrated solutes)...
2016: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27903298/meal-rich-in-carbohydrate-but-not-protein-or-fat-reveals-adverse-immunometabolic-responses-associated-with-obesity
#13
Ehsan Parvaresh Rizi, Sonia Baig, Muhammad Shabeer, Yvonne Teo, Shao Feng Mok, Tze Ping Loh, Faidon Magkos, Sam Virtue, Antonio Vidal-Puig, E Shyong Tai, Chin Meng Khoo, Sue-Anne Toh
BACKGROUND: Obesity-related insulin resistance is linked to inflammation. Immunometabolic function differs between lean and obese subjects, but whether macronutrient composition of ingested meals affects these responses is not well known. We examined the effects of a single meal rich in fat, protein, or carbohydrate on immunometabolic responses. METHODS: Nine lean insulin sensitive (LIS) men and 9 obese insulin resistant (OIR) men ingested high-carbohydrate (HC), high-fat (HF) or high-protein (HP) mixed meals in random order...
December 1, 2016: Nutrition Journal
https://www.readbyqxmd.com/read/27901606/protein-folding-prediction-in-a-cubic-lattice-in-hydrophobic-polar-model
#14
Nicola Yanev, Metodi Traykov, Peter Milanov, Borislav Yurukov
The tertiary structure of the proteins determines their functions. Therefore, the predicting of protein's tertiary structure, based on the primary amino acid sequence from long time, is the most important and challenging subject in biochemistry, molecular biology, and biophysics. One of the most popular protein structure prediction methods, called Hydrophobic-Polar (HP) model, is based on the observation that in polar environment hydrophobic amino acids are in the core of the molecule-in contact between them and more polar amino acids are in contact with the polar environment...
November 30, 2016: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/27901297/climate-change-alters-the-reproductive-phenology-and-investment-of-a-lacustrine-fish-the-three-spine-stickleback
#15
Rachel A Hovel, Stephanie M Carlson, Thomas P Quinn
High-latitude lakes are particularly sensitive to the effects of global climate change, demonstrating earlier ice breakup, longer ice-free seasons, and increased water temperatures. Such physical changes have implications for diverse life-history traits in taxa across entire lake food webs. Here, we use a five-decade time series from an Alaskan lake to explore effects of climate change on growth and reproduction of a widely distributed lacustrine fish, the three-spine stickleback (Gasterosteus aculeatus). We used multivariate autoregressive state-space (MARSS) models to describe trends in the mean length for multiple size classes and to explore the influence of physical (date of ice breakup, surface water temperature) and biological (density of con- and heterospecifics) factors...
November 30, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27901148/ligand-dependent-exciton-dynamics-and-photovoltaic-properties-of-pbs-quantum-dot-heterojunction-solar-cells
#16
Jin Chang, Yuhei Ogomi, Chao Ding, Yao Hong Zhang, Taro Toyoda, Shuzi Hayase, Kenji Katayama, Qing Shen
The surface chemistry of colloidal quantum dots (QDs) plays an important role in determining the photoelectric properties of QD films and the corresponding quantum dot heterojunction solar cells (QDHSCs). To investigate the effects of the ligand structure on the photovoltaic performance and exciton dynamics of QDHSCs, PbS QDHSCs were fabricated by the solid state ligand exchange method with mercaptoalkanoic acid as the cross-linking ligand. Temperature-dependent photoluminescence and ultrafast transient absorption spectra show that the electronic coupling and charge transfer rate within QD ensembles were monotonically enhanced as the ligand length decreased...
November 30, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27901119/how-does-the-spin-state-of-co-ions-affect-the-insulator-metal-transition-in-bi2a2co2o8-a%C3%A2-%C3%A2-ca-sr-ba
#17
Xiaokun Huang, Weiyi Zhang
The misfit layered Bi2A2Co2O8 (A = Ca, Sr, Ba) compounds experience an insulator to metal transition as A's ionic radius increases. This feature is contradictory to the conventional wisdom that larger lattice constant favors insulating rather than metallic state, and is also difficult to be reconciled using the Anderson weak localization theory. In this paper, we show from the first-principles calculation that an insulator-metal transition takes place from a nonmagnetic low-spin state of Co(3+) ions to a hexagonally arranged intermediate-spin low-spin mixed-state in CoO2 plane when ionic radius increases from Ca to Ba...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27901114/genome-wide-diversity-and-association-mapping-for-capsaicinoids-and-fruit-weight-in-capsicum-annuum-l
#18
Padma Nimmakayala, Venkata L Abburi, Thangasamy Saminathan, Suresh B Alaparthi, Aldo Almeida, Brittany Davenport, Marjan Nadimi, Joshua Davidson, Krittika Tonapi, Lav Yadav, Sridhar Malkaram, Gopinath Vajja, Gerald Hankins, Robert Harris, Minkyu Park, Doil Choi, John Stommel, Umesh K Reddy
Accumulated capsaicinoid content and increased fruit size are traits resulting from Capsicum annuum domestication. In this study, we used a diverse collection of C. annuum to generate 66,960 SNPs using genotyping by sequencing. The study identified 1189 haplotypes containing 3413 SNPs. Length of individual linkage disequilibrium (LD) blocks varied along chromosomes, with regions of high and low LD interspersed with an average LD of 139 kb. Principal component analysis (PCA), Bayesian model based population structure analysis and an Euclidean tree built based on identity by state (IBS) indices revealed that the clustering pattern of diverse accessions are in agreement with capsaicin content (CA) and fruit weight (FW) classifications indicating the importance of these traits in shaping modern pepper genome...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27900182/concussion-reporting-behaviours-of-community-college-student-athletes-and-limits-of-transferring-concussion-knowledge-during-the-stress-of-competition
#19
Nancy Resendes Chinn, Paul Porter
: Concussion education for student-athletes is mandated by several states and is becoming an integral component of concussion management programmes; however, little is known about student-athlete concussion knowledge and self-reporting of suspected concussion. This study explored to what extent collegiate student-athletes are knowledgeable on the topic of concussion, the relationship between having concussion knowledge and reporting behaviours, and factors contributing to not reporting when education has been provided...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899338/high-touch-and-high-tech-ht2-proposal-transforming-patient-engagement-throughout-the-continuum-of-care-by-engaging-patients-with-portal-technology-at-the-bedside
#20
Ann Scheck McAlearney, Cynthia J Sieck, Jennifer L Hefner, Alison M Aldrich, Daniel M Walker, Milisa K Rizer, Susan D Moffatt-Bruce, Timothy R Huerta
BACKGROUND: For patients with complex care needs, engagement in disease management activities is critical. Chronic illnesses touch almost every person in the United States. The costs are real, personal, and pervasive. In response, patients often seek tools to help them manage their health. Patient portals, personal health records tethered to an electronic health record, show promise as tools that patients value and that can improve health. Although patient portals currently focus on the outpatient experience, the Ohio State University Wexner Medical Center (OSUWMC) has deployed a portal designed specifically for the inpatient experience that is connected to the ambulatory patient portal available after discharge...
November 29, 2016: JMIR Research Protocols
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