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  • Open Access


    Strength Degradation of Wood Members Based on the Correlation of Natural and Accelerated Decay Experiments

    Xueliang Wang1, Qiangang Xu1, Xiuxin Wang1, Junhui Guo2, Wancheng Cao1, Chun Xiao3,*

    Journal of Renewable Materials, Vol.8, No.5, pp. 565-577, 2020, DOI:10.32604/jrm.2020.09020

    Abstract An accelerated decay test and a natural decay test were conducted synchronically to explore the strength degradation of decaying wood members under long-term exposure to natural environment. A natural decay test was carried out to measure the bending strength, compressive strength parallel to grain and modulus of elasticity of the wood members, with 6 groups of specimens decayed in natural environment for 3 to 18 months respectively. To compare with corresponding decay test, in which 6 other groups of specimens were measured under accelerated conditions. The experimental data collected were evaluated by Pearson productmoment for the correlation. The results indicate… More >

  • Open Access


    Research on the Application of Super Resolution Reconstruction Algorithm for Underwater Image

    Tingting Yang1, Shuwen Jia1, Hao Ma2, *

    CMC-Computers, Materials & Continua, Vol.62, No.3, pp. 1249-1258, 2020, DOI:10.32604/cmc.2020.05777

    Abstract Underwater imaging is widely used in ocean, river and lake exploration, but it is affected by properties of water and the optics. In order to solve the lower-resolution underwater image formed by the influence of water and light, the image super-resolution reconstruction technique is applied to the underwater image processing. This paper addresses the problem of generating super-resolution underwater images by convolutional neural network framework technology. We research the degradation model of underwater images, and analyze the lower-resolution factors of underwater images in different situations, and compare different traditional super-resolution image reconstruction algorithms. We further show that the algorithm of… More >

  • Open Access


    Mechanical Analysis of a Novel Biodegradable Zinc Alloy Stent Based on Degradation Model

    Kun Peng1, Xinyang Cui1, Aike Qiao1,*, Makoto Ohta2, Koji Shimoyama2, Yongliang Mu3

    Molecular & Cellular Biomechanics, Vol.16, Suppl.1, pp. 53-53, 2019, DOI:10.32604/mcb.2019.05729

    Abstract Biodegradable stents which can avoid risks caused by incompatibility between artery and permanent stents are attracting much interests. However, biodegradable stents have not been extensively applied in clinical therapy because of their insufficient scaffold performance as a result of poor Young’s Modulus of biodegradable materials and weaken structures in degradation process. In this study, a patented stent and a common stent were simulated to degrade in a 40% stenotic vesel based on a corrosion model involving uniform corrosion and stress corrosion. In the degradation process, the scaffold performance of the two stents and their functionality on reshaping diseased vessels are… More >

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