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  • Open Access


    Loneliness in Older Chilean People: Importance of Family Dysfunction and Depression

    Marcela Carrasco1,*, MBeatriz Fernández2, Emma Alexander3, MSoledad Herrera2

    International Journal of Mental Health Promotion, Vol.23, No.1, pp. 99-109, 2021, DOI:10.32604/IJMHP.2021.011568

    Abstract Loneliness is considered a public health problem that negatively affects wellbeing, especially in the older population. In Latin-American countries, most of the older population live with their family. Although this is thought to diminish feelings of loneliness, there is scarce data to support this. The objective of this study is to determine the prevalence of loneliness and evaluate its association with objective social networks, family functioning and perception of social support, in a sample of older people from Santiago, Chile. A survey was conducted of a representative sample of community older people (60–97 years) from Santiago, Chile, using the UCLA… More >

  • Open Access


    Age-related modifications of macrophages influenced by “inflammageing” in graft vs. host disease


    BIOCELL, Vol.44, No.2, pp. 237-246, 2020, DOI:10.32604/biocell.2020.08887

    Abstract Most studies focus on the adaptive immune cells in the GVHD pathogenesis, while little is known about innate immune cells in GVHD occurrence and development, especially macrophages. Meanwhile, a higher incidence of graft versus host disease (GVHD) is also found in the elderly patients. Though advances have been made in the modification of macrophages influenced by the inflamm-ageing, there is still no review on the role of macrophages in GVHD and the association between GVHD and the altered macrophages by inflamm-ageing. In this review, we focus on the potential age-related modifications of macrophage in GVHD, which contributes to the change… More >

  • Open Access


    Criteria for the Assessment of Multiple Site Damage in Ageing Aircraft

    P. Horst1

    Structural Durability & Health Monitoring, Vol.1, No.1, pp. 49-66, 2005, DOI:10.3970/sdhm.2005.001.049

    Abstract The paper presents a Monte Carlo Simulation method for the assessment of Multiple Site Damage (MSD) and a subsequent attempt to find a way to interpret intermediate results of the Monte Carlo Simulation with respect to the criticality of scenarios. The basic deterministic part of the model is based on the compounding method, which is used in order to gain an acceptable computational effort. Some examples illustrate features of MSD scenarios and this allows to check an approach for feature detection via Wavelet transforms. This Wavelet transform approach shows some positive results in the interpretation of MSD scenarios. More >

  • Open Access


    Numerical Modelling of the Transient Hygroscopic Behavior of Flax-Epoxy Composite

    Wajdi Zouari1,*, Mustapha Assarar1, Abderrazak Chilali2, Rezak Ayad1, Hocine Kebir3

    Journal of Renewable Materials, Vol.7, No.9, pp. 839-853, 2019, DOI:10.32604/jrm.2019.06773

    Abstract This contribution deals with the development of a three-node triangular plane finite element to analyze the transient hygroscopic behavior of 2/2 twill flax fabric-reinforced epoxy composite. Several plates of this material were fabricated using the vacuum infusion process and composite specimens were then cut and aged in tap water at room temperature until saturation. To simplify, a plane modelling of water diffusion in the aged specimens is adopted and Fick’s model is used to describe the water diffusion kinetics. To highlight the heterogeneity of the flax-epoxy samples, the twill flax fabrics waviness is modelled with a sinusoidal undulation. In particular,… More >

  • Open Access


    Alteration of Viscoelastic Properties is Associated with a Change in Cytoskeleton Components of Ageing Chondrocytes from Rabbit Knee Articular Cartilage

    Wangping Duan, Lei Wei, Juntao Zhang, Yongzhuang Hao, Chunjiang Li, Hao Li, Qi Li, Quanyou Zhang, Weiyi Chen, Xiaochun Wei∗,§

    Molecular & Cellular Biomechanics, Vol.8, No.4, pp. 253-274, 2011, DOI:10.3970/mcb.2011.008.253

    Abstract The cytoskeleton network is believed to play an important role in the biomechanical properties of the chondrocyte. Ours and other laboratories have demonstrated that chondrocytes exhibit a viscoelastic solid creep behavior in vitro and that viscoelastic properties decrease in osteoarthritic chondrocytes. In this study, we aimed to understand whether the alteration of viscoelastic properties is associated with changes in cytoskeleton components of ageing chondrocytes from rabbit knee articular cartilage. Three age groups were used for this study: young (2-months-old, N=23), adult (8-months-old, N=23), and old (31-months-old, N=23) rabbit groups. Cartilage structure and proteoglycan and type II collagen content were determined… More >

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