3,302 research outputs found

    Wang, YF

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    Enveloping porphyrins for efficient dye-sensitized solar cells

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    [[abstract]]A series of porphyrins bearing alkoxyl and/or alkyl chains were prepared to investigate the roles of alkoxyl/alkyl chains in the enhanced photovoltaic performance of the dyes. Based on the experimental results and the molecular simulations, we demonstrated that suitable long alkoxyl chains are capable of wrapping the porphyrin core, thus resulting in decreased dye aggregation, elevated excited states and LUMOs, and improved photovoltaic performance.[[note]]SC

    Metabolic Score for Insulin Resistance Is Correlated to Adipokine Disorder and Inflammatory Activity in Female Knee Osteoarthritis Patients in a Chinese Population [Corrigendum]

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    Ding L, Gao YH, Li YR, Huang YF, Wang XY, Qi X. Diabetes Metab Syndr Obes. 2020;13:2109–2118. The authors have advised that the Funding statement was missed on page 2116 of the published paper. The funding statement should read as follows: FundingThis study was supported by the Jilin Provincial Natural Science Foundation (Project Title: “Effects and Mechanisms of Leptin/ObR on the Pathological Progression of Knee Osteoarthritis via the AMPK Signaling Pathway”, Grant No. 20200201548JC)

    Global dynamics of reaction–diffusion systems with delays

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    AbstractTaking the effect of spatial diffusion into account, we introduce an exponential ordering and give sufficient conditions under which reaction–diffusion systems with delays generate monotone semi-flows on a suitable phase space even if they are not quasi-monotone. The powerful theory of monotone semi-flows is applied to describe the threshold dynamics for a nonlocal delayed reaction–diffusion system modelling the spread of bacterial infections

    A Novel Test Rig for the Basic Nonlinear Characterization of Bolted Joints

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    The paper aims at performing a comprehensive experimental study on the peculiar properties of a bolted joint, and investigates the damping induced at different interfaces (between flanges, bolt head/nut and flange, threads) during vibrations. A novel, simplified, single-bolt system joining a two-beam structure is designed and tested. Experimental results under different boundary conditions are presented, and the influence of the harmonic excitation force, as well as the bolt tension, is investigated. The test results show how the contact interface between the clamped flanges plays an important role in terms of frictional damping provided to the system during vibration, while the contact interfaces between the head/nut and flange, and secondarily between the threads, affect the system response at a less, but not negligible, extent. The test setup and test procedure can provide a database to validate single bolt contact models to be included in a more complex structure
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