73 research outputs found

    Molecular structures and vibrations of neutral and anionic CuOx (x = 1-3,6) clusters

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    We report equilibrium geometric structures of CuO2, CuO3, CuO6, and CuO clusters obtained by an all-electron linear combination of atomic orbitals scheme within the density-functional theory with generalized gradient approximation to describe the exchange-correlation effects. The vibrational stability of all clusters is examined on the basis of the vibrational frequencies. A structure with Cs symmetry is found to be the lowest-energy structure for CuO2, while a -shaped structure with C2v symmetry is the most stable structure for CuO3. For the larger CuO6 and CuO clusters, several competitive structures exist with structures containing ozonide units being higher in energy than those with O2 units. The infrared and Raman spectra are calculated for the stable optimal geometries. ~Comment: Uses Revtex4, (Better quality figures can be obtained from authors

    New insights into the genetic etiology of Alzheimer's disease and related dementias.

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    Characterization of the genetic landscape of Alzheimer's disease (AD) and related dementias (ADD) provides a unique opportunity for a better understanding of the associated pathophysiological processes. We performed a two-stage genome-wide association study totaling 111,326 clinically diagnosed/'proxy' AD cases and 677,663 controls. We found 75 risk loci, of which 42 were new at the time of analysis. Pathway enrichment analyses confirmed the involvement of amyloid/tau pathways and highlighted microglia implication. Gene prioritization in the new loci identified 31 genes that were suggestive of new genetically associated processes, including the tumor necrosis factor alpha pathway through the linear ubiquitin chain assembly complex. We also built a new genetic risk score associated with the risk of future AD/dementia or progression from mild cognitive impairment to AD/dementia. The improvement in prediction led to a 1.6- to 1.9-fold increase in AD risk from the lowest to the highest decile, in addition to effects of age and the APOE ε4 allele

    New insights into the genetic etiology of Alzheimer's disease and related dementias

    Get PDF
    Characterization of the genetic landscape of Alzheimer's disease (AD) and related dementias (ADD) provides a unique opportunity for a better understanding of the associated pathophysiological processes. We performed a two-stage genome-wide association study totaling 111,326 clinically diagnosed/'proxy' AD cases and 677,663 controls. We found 75 risk loci, of which 42 were new at the time of analysis. Pathway enrichment analyses confirmed the involvement of amyloid/tau pathways and highlighted microglia implication. Gene prioritization in the new loci identified 31 genes that were suggestive of new genetically associated processes, including the tumor necrosis factor alpha pathway through the linear ubiquitin chain assembly complex. We also built a new genetic risk score associated with the risk of future AD/dementia or progression from mild cognitive impairment to AD/dementia. The improvement in prediction led to a 1.6- to 1.9-fold increase in AD risk from the lowest to the highest decile, in addition to effects of age and the APOE ε4 allele

    Centrality Dependence Of The Pseudorapidity Density Distribution For Charged Particles In Pb-pb Collisions At √snn=2.76tev

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    7264/Mai61062

    Long-range Angular Correlations On The Near And Away Side In P-pb Collisions At √snn=5.02 Tev

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    7191/Mar294

    Polymers and petroleum chemistry

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    High-energy chemistry

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    404 p. : il.; 24 cm

    The impact of a brief embedded mindfulness-based program for veterinary students

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    Veterinary medical students, like other university students, are likely to experience elevated levels of stress, anxiety, and depression over the course of their studies. Mindfulness-based interventions have previously been effective for university students in reducing stress, depression, and anxiety. In this study, a mindfulness-based intervention was embedded in a core (compulsory) unit of a veterinary science course, in part with the aim of improving student well-being. Preliminary results suggest that, despite the mindfulness intervention, overall symptoms of stress, depression, and anxiety among participants (n=64) increased between the start and end of the semester. However, further analysis showed that most of this longitudinal increase was attributable to individuals who scored above the normal range (i.e., at least mild level of symptoms) in one or more measures at the beginning of the semester. Within this subset, individuals who regularly engaged in mindfulness practice once a week or more throughout the semester reported significantly lower depression and anxiety symptoms than those who practiced less than once a week (i.e., who had long periods without practice). Results suggest that engaging regularly in mindfulness practice potentially acted as a protective factor for students already experiencing at least a mild range of symptoms of anxiety and depression at the beginning of the semester. While not all veterinary students may derive significant benefit immediately, providing access to an embedded mindfulness program early in their program may facilitate the development of adaptive coping mechanisms, which may be engaged to increase resilience across their academic and professional life
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