122 research outputs found

    Putin\u27s \u27Eastern Pivot\u27: Divergent Ambitions between Russia and China? Evidence from the Arctic

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    Focusing upon the warming Sino-Russian relationship in general, this paper also examines in particular both countries interests in the Arctic region. The paper begins with a brief overview of the developing Sino-Russian relationship since the late 1980s. After discussing the blossoming of friendlier ties during the Putin-Xi era, it reviews some of the arguments and assumptions that scholars have held predicting either an ever closer relationship or an eventual rupture in those relations. The paper then analyzes both countries’ interests in the Arctic realm, using this case study as evidence supporting the view that the Sino-Russian relationship–despite its many difficulties–has been effectively managed in this arena for mutual benefit. As well, although it was not intended to be so, the sanctions regime imposed by America and her European allies has been a key driver in the closer Arctic relationship, in specific, and Sino-Russian relations, in general

    SELECTION AND STANDARDIZATION OF A METHOD FOR QUANTITATIVE FRUCTOSE DETERMINATION IN HUMAN EJACULATES

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    Co-existing structures in 105Ru

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    New positive-parity states, having a band-like structure, were observed in 105Ru. The nucleus was produced in induced fission reaction and the prompt gamma-rays, emitted from the fragments, were detected by the EUROBALL III multi-detector array. The partial scheme of excited 105Ru levels is analyzed within the Triaxial-Rotor-plus-Particle approach

    Malignant neoplasms of the female reproductive system: dynamics of morbidity and mortality

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    The article ledeals the dynamics of morbidity and mortality from malignant neoplasms of the female reproductive system in the Republic of Belarus in 2009-2018.В статье рассмотрена динамика заболеваемости и смертности населения от злокачественных новообразований женской репродуктивной системы в Республике Беларусь за 2009-2018 гг

    Compensation in Preclinical Huntington's Disease: Evidence From the Track-On HD Study

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    BACKGROUND: Cognitive and motor task performance in premanifest Huntington's disease (HD) gene-carriers is often within normal ranges prior to clinical diagnosis, despite loss of brain volume in regions involved in these tasks. This indicates ongoing compensation, with the brain maintaining function in the presence of neuronal loss. However, thus far, compensatory processes in HD have not been modeled explicitly. Using a new model, which incorporates individual variability related to structural change and behavior, we sought to identify functional correlates of compensation in premanifest-HD gene-carriers. METHODS: We investigated the modulatory effects of regional brain atrophy, indexed by structural measures of disease load, on the relationship between performance and brain activity (or connectivity) using task-based and resting-state functional MRI. FINDINGS: Consistent with compensation, as atrophy increased performance-related activity increased in the right parietal cortex during a working memory task. Similarly, increased functional coupling between the right dorsolateral prefrontal cortex and a left hemisphere network in the resting-state predicted better cognitive performance as atrophy increased. Such patterns were not detectable for the left hemisphere or for motor tasks. INTERPRETATION: Our findings provide evidence for active compensatory processes in premanifest-HD for cognitive demands and suggest a higher vulnerability of the left hemisphere to the effects of regional atrophy

    Observation of Positive-Parity Bands in 109^{109}Pd and 111^{111}Pd: Enhanced γ\gamma-Softness

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    The neutron-rich nuclei 109^{109}Pd and 111^{111}Pd were produced as fission fragments following the 30^{30}Si + 168^{168}Er reaction at 142 MeV. Using the identification based on the coincidences with the complementary fission fragments, the only positive-parity bands observed so far in 109^{109}Pd and 111^{111}Pd emerged from this work. A band, built on top of the 5/2+^+ ground state exhibiting ΔI\Delta I = 1 energy-level staggering, was observed in each of these nuclei. Both nuclei of interest, 109^{109}Pd and 111^{111}Pd, are suggested to lie in the transitional region of Pd isotopes of maximum γ\gamma-softness. The ground states of both nuclei are predicted by TRS calculations to be extremely γ\gamma-soft with shallow triaxial minima. The first crossing in the new bands is proposed to be due to an alignment of h11/22h^2_{11/2} neutrons

    Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations

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    CITATION: Majola, S. N. T., et al. 2019. Spectroscopy of low-spin states in 157Dy : Search for evidence of enhanced octupole correlations. Physical Review C, 100(6):034322, doi:10.1103/PhysRevC.100.034322.The original publication is available at https://journals.aps.org/prcLow-spin states of ¹⁵⁷Dy have been studied using the JUROGAM II array, following the ¹⁵⁵Gd (α, 2n) reaction at a beam energy of 25 MeV. The level scheme of ¹⁵⁷Dy has been expanded with four new bands. Rotational structures built on the [523]5/2⁻ and [402]3/2⁺ neutron orbitals constitute new additions to the level scheme as do many of the inter- and intraband transitions. This manuscript also reports the observation of cross I⁺ →(I–1) ⁻ and I⁻ →(I–1)⁺ E1 dipole transitions interlinking structures built on the [523]5/2⁻ (band 5) and [402]3/2⁺ (band 7) neutron orbitals. These interlacing band structures are interpreted as the bands of parity doublets with simplex quantum number s=–i related to possible octupole correlations.https://journals.aps.org/prc/abstract/10.1103/PhysRevC.100.034322Publisher's versio
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