A mathematical model for viscoelastic properties of biological soft tissue.

A quaternary viscoelastic structure model with two characteristic times is presented to describe the viscoelastic properties of parallel-fibered collagen tissue. The comparison results of model prediction and experimental data of rabbit medial collateral ligaments show that the model could accurately describe viscoelastic behavior such as stress-relaxation, strain-strengthening and creep of bio-soft-tissue within a small scope of errors. To study the biomechanical mechanism of viscoelasticity that biological soft tissue shows, the influence of model parameters on viscoelastic behavior of bio-soft-tissue is analyzed and researched, which indicated that the major influential elements of stress-relaxation in bio-soft-tissue are elastic modulus, relaxation time and strain rate of proteoglycan-rich matrix.

Novel Three-Dimensional Graphene-Like Networks Loaded with FeO Nanoparticles for Efficient Microwave Absorption.

A novel three-dimensional graphene-like networks material (3D-GLN) exhibiting the hierarchical porous structure was fabricated with a large-scale preparation method by employing an ion exchange resin as a carbon precursor. 3D-GLN was first studied as the effective microwave absorbing material. As indicated from the results of the electromagnetic parameter tests, and the minimum reflection loss () of the 3D-GLN reached -34.

A mesoporous "shell-in-shell" structured nanocatalyst with large surface area, enhanced synergy, and improved catalytic performance for Suzuki-Miyaura coupling reaction.

A novel mesoporous "shell-in-shell" structured nanocatalyst (@Pd/meso-TiO2/Pd@meso-SiO2) with large surface area, enhanced synergy, and improved catalytic performance is created for catalyzing Suzuki-Miyaura coupling and 4-nitrophenol reduction reactions.

A mathematical model on stress-strain of the epimysium of skeletal muscles.

A mathematical model based on the distribution of collagen fibers in ground substance is established to investigate epimysium of skeletal muscle. Under the condition of pinned boundary, incompressible soft biological tissues and the mixed ratio of composite materials, the macro-mechanical properties of the skeletal muscle epimysium are investigated by the proposed model, utilizing the principle of virtual work and the nonlinear theory of elasticity in this study. The effect of physical and geometrical parameters of skeletal muscle epimysium on the stress-strain relationship is also discussed in detail.