71 research outputs found

    sj-doc-1-sgo-10.1177_21582440231158027 – Supplemental material for An Empirical Study on the Impact of Chinese OFDI on the Global Value Chain Positions of Countries Along the Belt and Road and Threshold Effects

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    Supplemental material, sj-doc-1-sgo-10.1177_21582440231158027 for An Empirical Study on the Impact of Chinese OFDI on the Global Value Chain Positions of Countries Along the Belt and Road and Threshold Effects by Hui Wang and Xin Zhong in SAGE Open</p

    DataSheet1_Synthesis of activity evaluation of flavonoid derivatives as ɑ-glucosidase inhibitors.docx

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    Six flavonoid derivatives were synthesized and tested for anti-α-glucosidase activities. All derivatives were confirmed using NMR and HRMS and exhibited excellent inhibitory effects on α-glucosidase. Derivative four exhibited the highest anti-α-glucosidase activity (IC50: 15.71 ± 0.21 μM). Structure-activity relationship results showed that bromine group would be the most beneficial group to anti-α-glucosidase activity. Inhibitory mechnism and inhibition kinetics results showed derivative four was a reversible and mixed-type inhibitor. Molecular docking revealed that derivative four was tightly bind to the amino acid residues of active pocket of α-glucosidase and formed hydrogen bond, π-π stacking, and Pi-Donor hydrogen with α-glucosidase. Moreover, the physicochemical parameters of all derivatives were assessed using SwissADME software. This results also showed that the hybridization of flavonoid and phenylpropionic acid would be a useful strategy for the development of α-glucosidase inhibitors.</p

    Crystal Structures and Electronic Properties of Oxygen-rich Titanium Oxides at High Pressure

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    Pressure is well-known to significantly change the bonding patterns of materials and lift the reactivity of elements, leading to the synthesis of unconventional compounds with fascinating properties. Titanium–oxygen (Ti–O) compounds (e.g., TiO2) are attracting increasing attention due to their attractive electronic properties and extensive industrial applications (e.g., photocatalysis and solar cells). Using the effective CALYPSO structure searching method combined with first-principles calculations, we theoretically explored various oxygen-rich Ti–O compounds at pressures ranging from 0 to 200 GPa. Our results revealed, unexpectedly, that pressure stabilizes two hitherto unknown stoichiometric oxygen-rich Ti2O5 and TiO3 compounds. Ti2O5 crystallized in P-421c structure, whose remarkable feature is that it contains a peroxide group (O22–) with an O–O distance of 1.38 Å at 150 GPa. The trioxide TiO3 is an ionic metal and is the oxygen-richest compound known thus far in the Ti–O system. It adopts a high symmetry (space group Pm-3n) structure consisting of a 12-fold coordinated face-sharing TiO12 icosahedron, where Ti has the highest coordination number with O among all Ti–O structures. The underlying mechanisms for the stabilization of Ti2O5 and TiO3 lie in the higher coordination number and denser structure packing. Our current results unravel the unusual oxygen-rich stoichiometry of Ti–O compounds and provide further insight into the diverse electronic properties of Ti oxides under high pressure

    sj-docx-1-npx-10.1177_1934578X231171513 - Supplemental material for Polyhydroxy Sterols Isolated From <i>Ganoderma sinense</i> Spores and Their Cytotoxic Activities

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    Supplemental material, sj-docx-1-npx-10.1177_1934578X231171513 for Polyhydroxy Sterols Isolated From Ganoderma sinense Spores and Their Cytotoxic Activities by Danhong Lian, Xin Zhong, Lian Li, Li Gu, Yimei Zheng and Xin Liu in Natural Product Communications</p

    Emotional Body-Word Conflict Evokes Enhanced N450 and Slow Potential

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    <div><p>Emotional conflict refers to the influence of task irrelevant affective stimuli on current task set. Previously used emotional face-word tasks have produced certain electrophysiological phenomena, such as an enhanced N450 and slow potential; however, it remains unknown whether these effects emerge in other tasks. The present study used an emotional body-word conflict task to investigate the neural dynamics of emotional conflict as reflected by response time, accuracy, and event-related potentials, which were recorded with the aim of replicating the previously observed N450 and slow potential effect. Results indicated increased response time and decreased accuracy in the incongruent condition relative to the congruent condition, indicating a robust interference effect. Furthermore, the incongruent condition evoked pronounced N450 amplitudes and a more positive slow potential, which might be associated with conflict-monitoring and conflict resolution. The present findings extend our understanding of emotional conflict to the body-word domain.</p> </div

    The order and timing of a trial is shown.

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    <p>The order and timing of a trial is shown.</p

    Top shows the topography distribution for incongruent (top upper) and congruent (top lower) compound stimuli between 400 and 600 ms from top view.

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    <p>Bottom shows scalp topography distribution of incongruent and congruent body-word at 500 ms and difference in their distribution.</p

    Group average ERP of SP for congruent and incongruent compound stimuli at indicated electrode sites.

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    <p>Group average ERP of SP for congruent and incongruent compound stimuli at indicated electrode sites.</p

    Examples of the four different categories body-word compound stimuli used in the experiment.

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    <p>Congruent and incongruent stimuli consisted of exactly the same material. The bodies of the two congruent stimulus conditions were swapped to create a mismatch and emotion expressed by the body and the word.</p

    The Exotically Stoichiometric Compounds and Superconductivity of Lithium–Copper Systems under High Pressure

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    Pressure, as a useful tool, can push elements to new oxidation states by altering the stoichiometry of compounds, leading to materials with exotic physical and chemical properties. Herein, structure searches for Li–Cu systems were carried out under pressure. Three Li-rich Li–Cu compounds with exotic stoichiometries (i.e., Li4Cu, Li5Cu, and Li6Cu) are predicted at high pressure. Remarkably, the Li6Cu consists of a Cu-centered face-sharing icosahedron. Further simulations reveal that the captured electrons from Li atoms prompt Cu atoms to achieve high negative oxidation states beyond −1 and to act as a 4p group element. Moreover, our results unravel the superconductivity of the Li-rich Li–Cu system and the R3̅ phase of Li6Cu with Tc of ∼15 K at 50 GPa. The present results can greatly improve the understanding of the exotic electronic behavior of Li–Cu systems under high pressure
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