8,600 research outputs found
Oxidation stability of nanographite materials
No full textNanographite materials (NGMs), e.g., carbon nanotubes and graphene, have attracted great attention owing to their unique electronic and structural properties which make them promising for applications in Li-ion batteries, [ 1 ] functional composites, [ 2 ] fuel cells, [ 3 ] supercapacitors, [ 4 ] nano-electromechanical systems [ 5 ] and photovoltaic devices. [ 6 ] However, when NGMs are used as supports of catalysts or active components in electrochemical devices (such as fuel cells), their oxidation and corrosion could lead to a severe degradation of the catalyst which eventually affects the whole performance of the electrochemical systems. Therefore, understanding the oxidation stability of NGMs is essential in order to develop new robust nanoscale devices.© 2013 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim.Huaiguang Li, Niancai Cheng, Yao Zheng, Xiao Zhang, Haifeng Lv, Daping He, Mu Pan, Freddy Kleitz, Shi Zhang Qiao and Shichun M
Social trauma and the mu-opioid system in depression
No full textThe overarching thesis under investigation is that the endogenous opioid system plays a key role in depression subsequent to traumatic childhood social experiences. This is suggested by the fact that animal work indicates that mu-opioids robustly mediate separation-distress, and that early social stressors lead to long term dysregulation in key related circuitries and neuroanatomical structures
Visiting author Dr. Arthur Schlesinger, Jr. at MU
No full textVisiting author Dr. Arthur Schlesinger, Jr. at MU , b&w. Schlesinger wrote a book on disuniting America.https://mds.marshall.edu/parthenon_photo_morgue/1756/thumbnail.jp
Visiting author Dr. Arthur Schlesinger, Jr. being interviewed at MU
No full textVisiting author Dr. Arthur Schlesinger, Jr. being interviewed at MU , b&w. Schlesinger wrote a book on disuniting America.https://mds.marshall.edu/parthenon_photo_morgue/1757/thumbnail.jp
The relationship between co-authorship, currency of references and author self-citations
No full textThis paper attempts to identify the relationship between co-authorship and the currency of the references and author self-citations in the key journals of environmental engineering. The results show that the self-citation rate of co-authored articles is higher than in single-authored articles. A statistically significant correlation is identified between the numbers of co-authors, the rate of author self-citing and the author self-cited; though it was a low correlation. The value of coefficient correlation between the number of co-authors and the author self-citing rate is slightly higher than that between the number of co-authors and the author self-cited rate, which indicates that the number of co-authors hold a stronger correlation with the self-citing rate than the self-cited rate. Meanwhile, self-citing references are found to be more up-to-date than references to others. The range of publication years of self-citing references is smaller than that of references to others, indicating that researchers tend to preferentially cite their own recent works. There is no significant difference in the latest references between self-citing references and the references to others. It might result from electronic journals that provide an easy access to the most current publications.補正完畢國外SSCIY紙本電子版HU
Phase Diagram at Finite Chemical Potentials in the Nambu-Jona-Lasinio Model
No full textWe study the phase diagram of two flavor dense QCD at finite isospin and baryon chemical potentials in the framework of Nambu-Jona-Lasinio model. The system undergoes a crossover from a Bose-Einstein condensate of charged pions to a BCS superfluid with condensed quark-antiquark Cooper pairs when mu(I) increases at mu(B) = 0, and a nonzero baryon chemical potential serves as a mismatch between the pairing species. We observe a gapless pion condensation phase near the quadruple point (mu(I), mu(B)) = (m(pi), M-N-1.5m(pi)) where m(pi), M-N are the vacuum masses of pions and nucleons, respectively. At very large isospin chemical potential, mu(I) > 6.36m(pi), an inhomogeneous LOFF superfluid phase appears in a window of mu(B). Between the gapless and the LOFF phases, the pion superfluid phase and the normal quark matter phase are connected by a first order phase transition.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000302957500023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, Atomic, Molecular & ChemicalCPCI-S(ISTP)
Li2FeSiO4 nanorods bonded with graphene for high performance batteries
No full textWe synthesized a novel 2D hybrid material composed of Li2FeSiO4 nanorods (LFSNRs) anchored on graphene. Such a chemically bonded interface leads to electron coupling at the interface between the nano-LFS and graphene, creating effective charge transport for LFSNR@graphene hybrid cathodes. Used as a cathode material, it possesses a high capacity (300 mA h g-1 at 1.5-4.8 V), high charging-discharging rate (134 mA h g-1 @ 12 C) and long-life performance (maintaining 95% capacity over 240 cycles), which is mainly attributed to the effective depolarization introduced by the synergistic effects of LFSNRs bonded with graphene, which improves the electrochemical activity of the LFSNRs. Thus, a hybrid cathode modified with an interfacial chemical structure with nanoparticles bonded with an electrical conduction network such as graphene or CNTs can significantly enhance the electrochemical performance, and this novel type of material is very promising for commercial applications that require high energy, a long operating life, and excellent abuse tolerance, such as electric vehicles. ? The Royal Society of Chemistry.2015.SCI(E)[email protected]; [email protected]
Personality and attention bias in adults with a history of childhood trauma, and attenuating effects of mu-opioid agonist buprenorphine on attention bias
No full textThe current study compared personality characteristics and cognitive functioning (specifically, attentional bias) in a sample of adults who had experienced childhood trauma (the Trauma group) and a matched healthy control group. The study also examined the possible effects of the mu-opioid agonist buprenorphine on attentional bias in the Trauma group
Mu-Beta event-related (de)synchronization and EEG classification of left-right foot dorsiflexion kinaesthetic motor imagery for BCI
No full textThis is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The left and right foot representation area is located within the interhemispheric fissure of the sensorimotor cortex and share spatial proximity. This makes it difficult to visualize the cortical lateralization of event-related (de)synchronization (ERD/ERS) during left and right foot motor imageries. The aim of this study is to investigate the possibility of using ERD/ERS in the mu, low beta, and high beta bandwidth, during left and right foot dorsiflexion kinaesthetic motor imageries (KMI), as unilateral control commands for a brain-computer interface (BCI). EEG was recorded from nine healthy participants during cue-based left-right foot dorsiflexion KMI tasks. The features were analysed for common average and bipolar references. With each reference, mu and beta band-power features were analysed using time-frequency (TF) maps, scalp topographies, and average time course for ERD/ERS. The cortical lateralization of ERD/ERS, during left and right foot KMI, was confirmed. Statistically significant features were classified using LDA, SVM, and KNN model, and evaluated using the area under ROC curves. An increase in high beta power following the end of KMI for both tasks was recorded, from right and left hemispheres, respectively, at the vertex. The single trial analysis and classification models resulted in high discrimination accuracies, i.e. maximum 83.4% for beta ERS, 79.1% for beta ERD, and 74.0% for mu ERD. With each model the features performed above the statistical chance level of 2-class discrimination for a BCI. Our findings indicate these features can evoke left-right differences in single EEG trials. This suggests that any BCI employing unilateral foot KMI can attain classification accuracy suitable for pra
First observation of the rare decay at the NA62 experiment
No full textThe first observation of the rare decay using data collected by the NA62 Experiment in 2017 and 2018 is presented in this thesis. The branching ratio is measured using the process as a normalisation channel. The number of observed data candidates is , with a background contamination of . The analysis yields , including a complete treatment of relevant systematic effects. The complete software package for the ANTI-0 detector, added to the NA62 setup in 2021, was developed by the author within the NA62 software framework and is described in detail. The software tools allowing for short and long-term verification of ANTI-0 data quality are presented, with their output used to summarise the commissioning and performance of the detector in the 2021, 2022 and 2023 NA62 data-taking campaigns
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