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https://www.readbyqxmd.com/read/28813046/cold-atom-atom-ion-three-body-recombination-of-4-he-4-he-x-x-h-or-d
#1
Bin-Bin Wang, Yong-Chang Han, Wei Gao, Shu-Lin Cong
The atom-atom-ion three-body recombination (TBR) of mixed (4)He and X(-) (X = H or D) systems is investigated by solving the Schrödinger equation using the adiabatic hyperspherical representation method. It is shown that the dominant products after a TBR in the ultracold limit (E ≤ 0.1 mK × kB) are different for the two systems. For the (4)He(4)HeH(-) system, the rate of TBR into the (4)HeH(-) ion is nearly two orders of magnitude larger than that of TBR into the neutral (4)He2 molecule. In contrast, the yield of (4)He2 is a little higher than that of (4)HeD(-) for the (4)He(4)HeD(-) system...
August 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28811999/quantitative-analysis-of-epicardial-fat-volume-effects-of-scanning-protocol-and-reproducibility-of-measurements-in-non-contrast-cardiac-ct-vs-coronary-ct-angiography
#2
Luigia D'Errico, Francesco Salituri, Marco Ciardetti, Riccardo Favilla, Alessandro Mazzarisi, Giuseppe Coppini, Carlo Bartolozzi, Paoli Marraccini
BACKGROUND: Several studies have focused on the role of epicardial fat in the pathogenesis of cardiovascular disease (CVD). The main purpose of the study was to evaluate a computerized method for the quantitative analysis of epicardial fat volume (EFV) by non-contrast cardiac CT (NCT) for coronary calcium scan and coronary CT angiography (coronary CTA). METHODS: Thirty patients (61±12.5 years, 73% male, body mass index (BMI) =25.9±6.3 kg/m(2)) referred to our Institution for suspected coronary artery disease (CAD) underwent NCT and coronary CTA...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28811635/majorana-charges-winding-numbers-and-chern-numbers-in-quantum-ising-models
#3
G Zhang, C Li, Z Song
Mapping a many-body state on a loop in parameter space is a simple way to characterize a quantum state. The connections of such a geometrical representation to the concepts of Chern number and Majorana zero mode are investigated based on a generalized quantum spin system with short and long-range interactions. We show that the topological invariants, the Chern numbers of corresponding Bloch band, is equivalent to the winding number in the auxiliary plane, which can be utilized to characterize the phase diagram...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810469/psychological-factors-and-self-rated-health-an-observative-study-on-cardiological-patients
#4
Claudia Chiavarino, Chiara Poggio, Franco Rusconi, Anna Angela Rachele Beretta, Stefano Aglieri
This study investigated the association of illness representations, awareness of bodily states and health complaints to self-rated health in N = 150 consecutive patients with heart disease (ischaemic disease, heart failure and heart valve disease) and explored differences between 'health optimist' and 'health pessimist' patients. After controlling for medical variables, health complaints accounted for 14.2 per cent of patients' self-rated health, and illness representations contributed for another 16...
June 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28810414/body-image-and-sexual-orientation-the-experiences-of-lesbian-and-bisexual-women
#5
Marie L Smith, Elina Telford, Jeremy J Tree
Western cultures promote a thin and curvaceous ideal body size that most women find difficult to achieve by healthy measures, resulting in poor body image and increased risk for eating pathology. Research focusing on body image in lesbian and bisexual women has yielded inconsistent results. In total, 11 lesbian and bisexual women were interviewed regarding their experiences with body image. Interpretative phenomenological analysis revealed that these women experienced similar mainstream pressures to conform to a thin body ideal...
February 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28806125/changing-avatars-changing-selves-the-influence-of-social-and-contextual-expectations-on-digital-rendition-of-identity
#6
Stefano Triberti, Ilaria Durosini, Filippo Aschieri, Daniela Villani, Giuseppe Riva
Avatar creation is an interesting topic for both video game and social network studies. Research has shown that the creation of avatars is influenced by individual, contextual, and cultural features. Avatars are used to represent aspects of users' personality, but multiple avatars are used in different virtual contexts, as self-presentation strategies may vary according to the different "audiences" to be met online (say: friends, or strangers). Moreover, avatar creation is also influenced by cultural variables, such as gender, as avatars embody stereotypical aspects of being a woman or a man...
August 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/28803017/technical-note-use-of-an-automated-grooming-brush-by-heifers-and-potential-for-radiofrequency-identification-based-measurements-of-this-behavior
#7
Rachel L Toaff-Rosenstein, Martin Velez, Cassandra B Tucker
Healthy cattle readily use grooming brushes but this behavior subsides when animals become ill. Tracking use of a brush may provide an opportunity for health monitoring, especially if the process could be automated. We assessed how healthy heifers groom themselves on a brush and hypothesized that radiofrequency identification (RFID) could be used to accurately and automatically record this behavior. Angus and Hereford heifers (n = 16) were fitted with 2 ultra-high-frequency RFID ear tags and monitored in groups of 8 while housed in a pen with an electronic brush, video cameras, and 4 RFID antennas...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28798682/a-novel-virtual-reality-based-training-protocol-for-the-enhancement-of-the-mental-frame-syncing-in-individuals-with-alzheimer-s-disease-a-development-of-concept-trial
#8
Silvia Serino, Elisa Pedroli, Cosimo Tuena, Gianluca De Leo, Marco Stramba-Badiale, Karine Goulene, Noemi G Mariotti, Giuseppe Riva
A growing body of evidence suggests that people with Alzheimer's Disease (AD) show compromised spatial abilities. In addition, there exists from the earliest stages of AD a specific impairment in "mental frame syncing," which is the ability to synchronize an allocentric viewpoint-independent representation (including object-to-object information) with an egocentric one by computing the bearing of each relevant "object" in the environment in relation to the stored heading in space (i.e., information about our viewpoint contained in the allocentric viewpoint-dependent representation)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28798671/bodily-sensory-inputs-and-anomalous-bodily-experiences-in-complex-regional-pain-syndrome-evaluation-of-the-potential-effects-of-sound-feedback
#9
Ana Tajadura-Jiménez, Helen Cohen, Nadia Bianchi-Berthouze
Neuroscientific studies have shown that human's mental body representations are not fixed but are constantly updated through sensory feedback, including sound feedback. This suggests potential new therapeutic sensory approaches for patients experiencing body-perception disturbances (BPD). BPD can occur in association with chronic pain, for example in Complex Regional Pain Syndrome (CRPS). BPD often impacts on emotional, social, and motor functioning. Here we present the results from a proof-of-principle pilot study investigating the potential value of using sound feedback for altering BPD and its related emotional state and motor behavior in those with CRPS...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28794465/the-mechanical-representation-of-temporal-delays
#10
Raz Leib, Amir Karniel, Ferdinando A Mussa-Ivaldi
When we knock on a door, we perceive the impact as a collection of simultaneous events, combining sound, sight, and tactile sensation. In reality, information from different modalities but from a single source is flowing inside the brain along different pathways, reaching processing centers at different times. Therefore, interpreting different sensory modalities which seem to occur simultaneously requires information processing that accounts for these different delays. As in a computer-based robotic system, does the brain use some explicit estimation of the time delay, to realign the sensory flows? Or does it compensate for temporal delays by representing them as changes in the body/environment mechanics? Using delayed-state or an approximation for delayed-state manipulations between visual and proprioceptive feedback during a tracking task, we show that tracking errors, grip forces, and learning curves are consistent with predictions of a representation that is based on approximation for delay, refuting an explicit delayed-state representation...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28780698/multisensory-integration-and-age-dependent-sensitivity-to-body-representation-modification-induced-by-the-rubber-hand-illusion
#11
János Kállai, Péter Kincses, Beatrix Lábadi, Krisztina Dorn, Tibor Szolcsányi, Gergely Darnai, Ernő Hupuczi, József Janszky, Árpád Csathó
The aim of the present study was to compare junior and senior healthy participants for their multimodal integration capability. The instrument used for the investigation was the rubber hand illusion (RHI) where synchronous and asynchronous multimodal stimulation were applied. The study focused on assessing the rate of integration for visuo-tactile and visuo-proprioceptive stimuli. METHODS: From a large sample of right-handed volunteers, 50 senior employees (containing younger and middle age adults) and 51 senior retired (senior adults) participants were recruited...
August 5, 2017: Cognitive Processing
https://www.readbyqxmd.com/read/28777824/shaping-visual-space-perception-through-bodily-sensations-testing-the-impact-of-nociceptive-stimuli-on-visual-perception-in-peripersonal-space-with-temporal-order-judgments
#12
Lieve Filbrich, Andrea Alamia, Séverine Blandiaux, Soline Burns, Valéry Legrain
Coordinating spatial perception between body space and its external surrounding space is essential to adapt behaviors to objects, especially when they are noxious. Such coherent multisensory representation of the body extended into external space is conceptualized by the notion of peripersonal reference frame, mapping the portion of space in which somatic and extra-somatic inputs interact closely. Studies on crossmodal interactions between nociception and vision have been scarce. Here we investigated how the perception of visual stimuli, especially those surrounding the body, can be impacted by a nociceptive and potentially harmful stimulus inflicted on a particular body part...
2017: PloS One
https://www.readbyqxmd.com/read/28765806/contour-and-angle-function-based-scoliosis-monitoring-relaxing-the-requirement-on-image-quality-in-the-measurement-of-spinal-curvature
#13
Pierino G Bonanni
PURPOSE: A method for measuring spinal curvature that provides a useful analog to the Cobb angle and is tolerant of degraded image quality is proposed. Conventional methods require a higher standard of discernibility for vertebra features and suffer high variability. METHODS: Assumption is made that the natural representation of the spine for the purpose of scoliosis monitoring is that of a continuous curved contour rather than a series of discrete vertebral bodies with individual orientations...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28764109/determining-potential-adverse-effects-in-marine-fish-exposed-to-pharmaceuticals-and-personal-care-products-with-the-fish-plasma-model-and-whole-body-tissue-concentrations
#14
James P Meador, Andrew Yeh, Evan P Gallagher
The Fish Plasma Model (FPM) was applied to water exposure and tissue concentrations in fish collected from two wastewater treatment plant impacted estuarine sites. In this study we compared predicted fish plasma concentrations to Cmax values for humans, which represents the maximum plasma concentration for the minimum therapeutic dose. The results of this study show that predictions of plasma concentrations for a variety of pharmaceutical and personal care products (PPCPs) from effluent concentrations resulted in 37 compounds (54%) exceeding the response ratio (RR = Fish [Plasma]/1%Cmaxtotal) of 1 compared to 3 compounds (14%) detected with values generated with estuarine receiving water concentrations...
July 26, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28762737/mngcch-m-cu-ag-au-ng-xe-rn-the-first-set-of-compounds-with-m-ng-c-bonding-motif
#15
Gourhari Jana, Sudip Pan, Gabriel Merino, Pratim K Chattaraj
Although Ng-M (M = Cu, Ag, Au; Ng = noble gas) and Ng-C bonds are known to exist in different viable species, we report here a series of systems with formula MNgCCH (Ng = Xe, Rn) in which both bonds coexist. These compounds possess reasonably high kinetic stability (free energy barrier, ΔG(‡) of 14.0-34.8 kcal/mol) along an exergonic isomerization channel, MNgCCH → NgMCCH. For a given M, the ΔG(‡) associated with this channel increases from Xe to Rn, whereas for a given Ng, it increases along Ag < Cu < Au...
August 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28761076/-embodied-body-language-an-electrical-neuroimaging-study-with-emotional-faces-and-bodies
#16
Marta Calbi, Monica Angelini, Vittorio Gallese, Maria Alessandra Umiltà
To date, most investigations in the field of affective neuroscience mainly focused on the processing of facial expressions, overlooking the exploration of emotional body language (EBL), its capability to express our emotions notwithstanding. Few electrophysiological studies investigated the time course and the neural correlates of EBL and the integration of face and body emotion-related information. The aim of the present study was to investigate both the time course and the neural correlates underlying the integration of affective information conveyed by faces and bodies...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28756669/high-level-quantum-calculations-of-the-ir-spectra-of-the-eigen-zundel-and-ring-isomers-of-h-h2o-4-find-a-single-match-to-experiment
#17
Qi Yu, Joel M Bowman
The protonated water tetramer H(+)(H2O)4, often written as the Eigen cluster, H3O(+)(H2O)3, plays a central role in studies of the hydrated proton. The cluster has been investigated spectroscopically both experimentally and theoretically with some differences and controversies. The major issue stems from the existence of higher-energy Zundel isomers of this cluster and the role these isomers might play in the IR spectra. Settling this fundamental issue is one goal of this Communication, where high-level quantum calculations of the IR spectra of the Eigen and three isomeric forms of this cluster are presented...
August 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28755051/reference-frames-in-spatial-updating-when-body-based-cues-are-absent
#18
Qiliang He, Timothy P McNamara, Jonathan W Kelly
The current study investigated the reference frame used in spatial updating when idiothetic cues to self-motion were minimized (desktop virtual reality). In Experiment 1, participants learned a layout of eight objects from a single perspective (learning heading) in a virtual environment. After learning, they were placed in the same virtual environment and used a keyboard to navigate to two of the learned objects (visible) before pointing to a third object (invisible). We manipulated participants' starting orientation (initial heading) and final orientation (final heading) before pointing, to examine the reference frame used in this task...
July 28, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28754271/afferent-cardiac-signals-modulate-attentional-engagement-to-low-spatial-frequency-fearful-faces
#19
Ruben T Azevedo, Deborah Badoud, Manos Tsakiris
Despite the growing consensus that the continuous dynamic cortical representations of internal bodily states shape the subjective experience of emotions, physiological arousal is typically considered only a consequence and rarely a determinant of the emotional experience. Recent experimental approaches study how afferent autonomic signals from the heart modulate the processing of sensory information by focussing on the phasic properties of arterial baroreceptor firing that is active during cardiac systole and quiescent during cardiac diastole...
July 4, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28749346/attribute-and-or-grammar-for-joint-parsing-of-human-pose-parts-and-attributes
#20
Seyoung Park, Xiaohan Nie, Song-Chun Zhu
This paper presents an attribute and-or grammar (A-AOG) model for jointly inferring human body pose and human attributes in a parse graph with attributes augmented to nodes in the hierarchical representation. In contrast to other popular methods in the current literature that train separate classifiers for poses and individual attributes, our method explicitly represents the decomposition and articulation of body parts, and account for the correlations between poses and attributes. The A-AOG model is an amalgamation of three traditional grammar formulations: (i)Phrase structure grammar representing the hierarchical decomposition of the human body from whole to parts; (ii)Dependency grammar modeling the geometric articulation by a kinematic graph of the body pose; and (iii)Attribute grammar accounting for the compatibility relations between different parts in the hierarchy so that their appearances follow a consistent style...
July 25, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
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