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https://www.readbyqxmd.com/read/28540376/on-the-local-order-of-amorphous-la2mo2o6-7
#1
Jesús Vega-Castillo, Gaëtan Buvat, Gwenaël Corbel, Abdelhadi Kassiba, Philippe Lacorre, Alberto Caneiro
The amorphous reduction product of the oxide ion conductor La2Mo2O9 was previously shown to be a good, sulphur-tolerant, anode material for solid oxide fuel cell devices (X. C. Lu, J. H. Zhu, J. Electrochem. Soc., 2008, 155(10), B1053). In this paper, we study the local order of amorphous La2Mo2O6.7 using X-ray absorption spectroscopy analyses and electronic paramagnetic resonance. The extended X-ray absorption fine structure analysis of local arrangements around Mo in La2Mo2O6.7 is first carried out on the basis of strong distortions from three crystalline models of La2Mo2O9, La7Mo7O30 and La2Mo2O7...
May 25, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28539910/the-role-of-emotional-landmarks-on-topographical-memory
#2
Massimiliano Palmiero, Laura Piccardi
The investigation of the role of emotional landmarks on human navigation has been almost totally neglected in psychological research. Therefore, the extent to which positive and negative emotional landmarks affect topographical memory as compared to neutral emotional landmark was explored. Positive, negative and neutral affect-laden images were selected as landmarks from the International Affective Picture System (IAPS) Inventory. The Walking Corsi test (WalCT) was used in order to test the landmark-based topographical memory...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28538992/intercepting-a-moving-target-on-line-or-model-based-control
#3
Huaiyong Zhao, William H Warren
When walking to intercept a moving target, people take an interception path that appears to anticipate the target's trajectory. According to the constant bearing strategy, the observer holds the bearing direction of the target constant based on current visual information, consistent with on-line control. Alternatively, the interception path might be based on an internal model of the target's motion, known as model-based control. To investigate these two accounts, participants walked to intercept a moving target in a virtual environment...
May 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28535252/trypanosome-rna-editing-mediator-complex-proteins-have-distinct-functions-in-grna-utilization
#4
Rachel M Simpson, Andrew E Bruno, Runpu Chen, Kaylen Lott, Brianna L Tylec, Jonathan E Bard, Yijun Sun, Michael J Buck, Laurie K Read
Uridine insertion/deletion RNA editing is an essential process in kinetoplastid parasites whereby mitochondrial mRNAs are modified through the specific insertion and deletion of uridines to generate functional open reading frames, many of which encode components of the mitochondrial respiratory chain. The roles of numerous non-enzymatic editing factors have remained opaque given the limitations of conventional methods to interrogate the order and mechanism by which editing progresses and thus roles of individual proteins...
May 23, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28534783/nahal-flex-a-numerical-and-alphabetical-hinge-detection-algorithm-for-flexible-protein-structure-alignment
#5
Samira Fotoohifiroozabadi, Mohd Saberi Mohamad, Safaai Deris
Flexible proteins are proteins that have conformational changes in their structures. Protein flexibility analysis is critical for classifying and understanding protein functionality. For that analysis, the hinge areas where proteins show flexibility must be detected. To detect the location of the hinges, previous methods have utilized the three-dimensional (3D) structure of proteins, which is highly computational. To reduce the computational complexity, this study proposes a novel text-based method using structural alphabets (SAs) for detecting the hinge position, called NAHAL-Flex...
May 17, 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
https://www.readbyqxmd.com/read/28533523/characterization-of-two-distant-double-slits-by-chaotic-light-second-order-interference
#6
Milena D'Angelo, Aldo Mazzilli, Francesco V Pepe, Augusto Garuccio, Vincenzo Tamma
We present the experimental characterization of two distant double-slit masks illuminated by chaotic light, in the absence of first-order imaging and interference. The scheme exploits second-order interference of light propagating through two indistinguishable pairs of disjoint optical paths passing through the masks of interest. The proposed technique leads to a deeper understanding of biphoton interference and coherence, and opens the way to the development of novel schemes for retrieving information on the relative position and the spatial structure of distant objects, which is of interest in remote sensing, biomedical imaging, as well as monitoring of laser ablation, when first-order imaging and interference are not feasible...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28531127/virtual-lattice-based-intrusion-detection-algorithm-over-actuator-assisted-underwater-wireless-sensor-networks
#7
Jing Yan, Xiaolei Li, Xiaoyuan Luo, Xinping Guan
Due to the lack of a physical line of defense, intrusion detection becomes one of the key issues in applications of underwater wireless sensor networks (UWSNs), especially when the confidentiality has prime importance. However, the resource-constrained property of UWSNs such as sparse deployment and energy constraint makes intrusion detection a challenging issue. This paper considers a virtual-lattice-based approach to the intrusion detection problem in UWSNs. Different from most existing works, the UWSNs consist of two kinds of nodes, i...
May 20, 2017: Sensors
https://www.readbyqxmd.com/read/28529223/apathy-and-type-2-diabetes-among-american-indians-exploring-the-protective-effects-of-traditional-cultural-involvement
#8
Amanda E Carlson, Benjamin D Aronson, Michael Unzen, Melissa Lewis, Gabrielle J Benjamin, Melissa L Walls
In this study we examine relationships between traditional cultural factors, apathy, and health-related outcomes among a sample of American Indian adults with type 2 diabetes. Participants completed cross-sectional interviewer-assisted paper and pencil surveys. We tested a proposed model using latent variable path analysis in order to understand the relationships between cultural participation, apathy, frequency of high blood sugar symptoms, and health-related quality of life. The model revealed significant direct effects from cultural participation to apathy, and apathy to both health-related outcomes...
2017: Journal of Health Care for the Poor and Underserved
https://www.readbyqxmd.com/read/28528295/a-machine-learning-graph-based-approach-for-3d-segmentation-of-bruch-s-membrane-opening-from-glaucomatous-sd-oct-volumes
#9
Mohammad Saleh Miri, Michael D Abràmoff, Young H Kwon, Milan Sonka, Mona K Garvin
Bruch's membrane opening-minimum rim width (BMO-MRW) is a recently proposed structural parameter which estimates the remaining nerve fiber bundles in the retina and is superior to other conventional structural parameters for diagnosing glaucoma. Measuring this structural parameter requires identification of BMO locations within spectral domain-optical coherence tomography (SD-OCT) volumes. While most automated approaches for segmentation of the BMO either segment the 2D projection of BMO points or identify BMO points in individual B-scans, in this work, we propose a machine-learning graph-based approach for true 3D segmentation of BMO from glaucomatous SD-OCT volumes...
May 6, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28525260/three-dimensional-visualization-and-characterization-of-polymeric-self-assemblies-by-transmission-electron-microtomography
#10
Hiroshi Jinnai, Takeshi Higuchi, Xiaodong Zhuge, Akihito Kumamoto, Kees Joost Batenburg, Yuichi Ikuhara
Self-assembling structures and their dynamical processes in polymeric systems have been investigated using three-dimensional transmission electron microscopy (3D-TEM). Block copolymers (BCPs) self-assemble into nanoscale periodic structures called microphase-separated structures, a deep understanding of which is important for creating nanomaterials with superior physical properties, such as high-performance membranes with well-defined pore size and high-density data storage media. Because microphase-separated structures have become increasingly complicated with advances in precision polymerization, characterizing these complex morphologies is becoming increasingly difficult...
May 19, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28522791/career-in-vascular-surgery-the-medical-student-s-perspective
#11
Malwina K Grobelna, Hubert Stępak, Barbara Kołodziejczak, Łukasz Dzieciuchowicz, Grzegorz Oszkinis
AIM: Under the supervision of the Department of General and Vascular Surgery of Poznan University of Medical Sciences, a questionnaire was distributed online or as a paper version to medical students (MSs) in order to better understand the attitudes towards surgery as a specialty and to determine the reasons why students do and do not choose vascular surgery as their career path. MATERIALS AND METHODS: The questionnaire was distributed online or as a paper version to MSs in the 3rd, 5th, and 6th year of the PUMS 6-year M...
February 28, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28510283/ca-2-cl-association-in-water-revisited-the-role-of-cation-hydration
#12
Mathieu Salanne, Sami Tazi, Rodolphe Vuilleumier, Benjamin Rotenberg
We investigate the dissociation of a Ca$^{2+}$-Cl$^-$ pair in water using classical molecular dynamics simulations with a polarizable interaction potential, parameterized from ab initio calculations. By computing the potential of mean force as a function not only of the interionic distance but also of the coordination numbers by water molecules, we show it is necessary to use a collective variable describing the cation hydration in order to capture the dissociation mechanism. In the contact ion pair, the Ca$^{2+}$ cation has a first coordination sphere containing 5 or 6 water molecules...
May 16, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28505162/gender-differences-in-the-transmission-of-risk-for-antisocial-behavior-problems-across-generations
#13
Pin Li, Jill B Becker, Mary M Heitzeg, Michele L McClellan, Beth Glover Reed, Robert A Zucker
Previous studies have shown that children of alcohol use disorder (AUD) parents are more likely to develop alcohol problems as well as antisocial and other behavior problems. The purpose of this study was to examine gender discordance in the effect of early maternal and paternal influences on antisocial behaviors of boys and girls, as well as the environmental factors that moderate the parental effects. Specifically, we examined the effects of childhood and adulthood antisocial behavior of the parents on offspring antisocial behavior as young adults...
2017: PloS One
https://www.readbyqxmd.com/read/28498706/sisyphus-laser-cooling-of-a-polyatomic-molecule
#14
Ivan Kozyryev, Louis Baum, Kyle Matsuda, Benjamin L Augenbraun, Loic Anderegg, Alexander P Sedlack, John M Doyle
We perform magnetically assisted Sisyphus laser cooling of the triatomic free radical strontium monohydroxide (SrOH). This is achieved with principal optical cycling in the rotationally closed P(N^{''}=1) branch of either the X[over ˜]^{2}Σ^{+}(000)↔A[over ˜]^{2}Π_{1/2}(000) or the X[over ˜]^{2}Σ^{+}(000)↔B[over ˜]^{2}Σ^{+}(000) vibronic transitions. Molecules lost into the excited vibrational states during the cooling process are repumped back through the B[over ˜](000) state for both the (100) level of the Sr-O stretching mode and the (02^{0}0) level of the bending mode...
April 28, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28497957/compression-ratio-ion-mobility-programming-crimp-accumulation-and-compression-of-billions-of-ions-for-ion-mobility-mass-spectrometry-using-traveling-waves-in-structures-for-lossless-ion-manipulations-slim
#15
Liulin Deng, Sandilya V B Garimella, Ahmed M Hamid, Ian K Webb, Isaac K Attah, Randolph V Norheim, Spencer A Prost, Xueyun Zheng, Jeremy A Sandoval, Erin S Baker, Yehia M Ibrahim, Richard D Smith
We report on the implementation of a traveling wave (TW) based compression ratio ion mobility programming (CRIMP) approach within structures for lossless ion manipulations (SLIM) that enables both greatly enlarged trapped ion charge capacities and also efficient ion population compression for use in ion mobility (IM) separations. Ion accumulation is conducted in a SLIM serpentine ultralong path with extended routing (SUPER) region after which CRIMP compression allows the large ion populations to be "squeezed"...
May 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28497892/echoes-of-others-a-path-analytic-examination-of-an-interpersonal-cognitive-model-of-voice-related-distress
#16
Esther R Cole, Clara Strauss, Chris Fife-Schaw, Simon McCarthy-Jones
OBJECTIVES: Cognitive models propose that levels of distress associated with auditory verbal hallucinations ('voices') are influenced by the hearers' beliefs about their voices (perceived malevolence and omnipotence), their negative beliefs about themselves and others and their attachment style. This study aims to test a comprehensive model of the relationship between these variables in order to identify distal and proximal interpersonal and cognitive factors contributing to voice-related distress...
May 12, 2017: Psychology and Psychotherapy
https://www.readbyqxmd.com/read/28492463/impact-of-an-alcohol-withdrawal-treatment-pathway-on-hospital-length-of-stay-a-retrospective-observational-study-comparing-pre-and-post-pathway-implementation
#17
Andrew J Muzyk, Rachel E Rogers, Gary Dighe, Jessica Hartung, Robert C Musser, Mary J Stillwagon, Sarah Rivelli
OBJECTIVE: To determine if the implementation of a hospital-specific alcohol withdrawal treatment pathway used in a medical-surgical patient population decreased hospital length of stay (LOS) compared with the standard of care. METHODS: This retrospective observational study, conducted in a large academic tertiary care hospital, involved 582 subjects who met criteria for study inclusion, with 275 subjects in the 2010 cohort and 307 in the 2012 cohort. The Alcohol Withdrawal Project Team was formed with the goal of creating a standardized approach to the recognition and treatment of alcohol withdrawal at Duke University Hospital...
May 2017: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/28491028/resting-state-functional-connectivity-and-network-analysis-of-cerebellum-with-respect-to-crystallized-iq-and-gender
#18
Vasileios C Pezoulas, Michalis Zervakis, Sifis Michelogiannis, Manousos A Klados
During the last years, it has been established that the prefrontal and posterior parietal brain lobes, which are mostly related to intelligence, have many connections to cerebellum. However, there is a limited research investigating cerebellum's relationship with cognitive processes. In this study, the network of cerebellum was analyzed in order to investigate its overall organization in individuals with low and high crystallized Intelligence Quotient (IQ). Functional magnetic resonance imaging (fMRI) data were selected from 136 subjects in resting-state from the Human Connectome Project (HCP) database and were further separated into two IQ groups composed of 69 low-IQ and 67 high-IQ subjects...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28489535/lead-free-multilayer-piezoceramic-composites-the-effect-of-co-sintering-on-electromechanical-properties
#19
Azatuhi Ayrikyan, Andreas Kastner, Neamul Khansur, Shintaro Yasui, Mitsuru Itoh, Kyle Webber
The macroscopic electromechanical behavior of lead-free multilayer composites was characterized from room temperature to 150 °C. The polar seed component consisted of a nonergodic relaxor, (Bi1/2Na1/2)TiO3-7BaTiO3, with an electric-field-induced long range ferroelectric order, whereas the nonpolar matrix was an ergodic relaxor Bi0.5(Na0.75K0.25)0.5TiO3-6BiAlO3) that undergoes a reversible electric-field-induced macroscopic nonpolar-to-polar transition. Microstructural evidence of the effects of co-sinering are demonstrated through examination of grain size, interdiffusion and pore structure...
May 8, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28485423/thermal-conductivity-of-bi2te3-nanowires-how-size-affects-phonon-scattering
#20
Miguel Muñoz Rojo, B Abad, C V Manzano, P Torres, X Cartoixà, F X Alvarez, M Martín Gonzalez
This work provides an in-depth study of how the thermal conductivity of stoichiometric [110] Bi2Te3 nanowires becomes affected when reducing its diameter from an experimental and theoretical point of view. The thermal conductivity was observed to decrease more than 70% (from 1.78 ± 0.46 W K(-1) m(-1) to 0.52 ± 0.35 W K(-1) m(-1)) when the diameter of the nanowire was reduced one order of magnitude (from 300 nm to 25 nm). The Kinetic-Collective model was used to understand such a reduction, which can be explained by the impact that surface scattering has in acoustic phonons...
May 25, 2017: Nanoscale
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