Results 51 to 60 of about 82,038 (316)

Bioengineering facets of the tumor microenvironment in 3D tumor models: insights into cellular, biophysical and biochemical interactions

open access: yesFEBS Open Bio, EarlyView.
The tumor microenvironment is a dynamic, multifaceted complex system of interdependent cellular, biochemical, and biophysical components. Three‐dimensional in vitro models of the tumor microenvironment enable a better understanding of these interactions and their impact on cancer progression and therapeutic resistance.
Salma T. Rafik   +3 more
wiley   +1 more source

Viscoelastic Evaluation of Composite Materials by Non-Contact Air Coupled Ultrasonic Transmission Method

open access: yesIEEE Access, 2021
The viscoelasticity of composite materials is one of the important mechanical properties to characterize the intrinsic damping mechanism, which is a crucial evaluation index for the safety performance of materials.
Junjie Chang   +4 more
doaj   +1 more source

Memory-based mediated interactions between rigid particulate inclusions in viscoelastic environments [PDF]

open access: yesPhys. Rev. E 99, 012601 (2019), 2018
Many practically relevant materials combine properties of viscous fluids and elastic solids to viscoelastic behavior. Our focus is on the induced dynamic behavior of damped finite-sized particulate inclusions in such substances. We explicitly describe history-dependent interactions that emerge between the embedded particles.
arxiv   +1 more source

Viscoelasticity Imaging of Biological Tissues and Single Cells Using Shear Wave Propagation

open access: yesFrontiers in Physics, 2021
Changes in biomechanical properties of biological soft tissues are often associated with physiological dysfunctions. Since biological soft tissues are hydrated, viscoelasticity is likely suitable to represent its solid-like behavior using elasticity and ...
Hongliang Li   +16 more
doaj   +1 more source

Numerical Studies of Influencing Factors on the Homogeneity of the Powder Mixture during the Powder Spreading Process of Powder Bed Fusion–Laser Beam/Metal

open access: yesAdvanced Engineering Materials, EarlyView.
AISI 304L stainless steel powder is mixed with silicon nitride (Si3N4) powder and processed by PBF‐LB/M, allowing partial retention of Si3N4. The numerical approach effectively predicts the Si3N4 powder homogeneity and N content distribution on the powder bed. Recent studies have focused on the alloying of nitrogen (N) in high‐alloy stainless steels by
Yuanbin Deng   +7 more
wiley   +1 more source

Nonlinear viscoelastic dynamics of nano-confined water [PDF]

open access: yes, 2007
The viscoelastic dynamics of nano-confined water is studied by means of atomic force microscopy (AFM). We observe a nonlinear viscoelastic behavior remarkably similar to that widely observed in metastable complex fluids. We show that the origin of the measured nonlinear viscoelasticity in nano-confined water is a strain rate dependent relaxation time ...
arxiv   +1 more source

Viscoelastic modeling of the stress relaxation behavior for the bionic extracellular matrix polymer scaffold

open access: yesMedicine in Novel Technology and Devices, 2022
Viscoelasticity of the extracellular matrix (ECM) plays a critical part in controlling cell behavior. However, the structure-related viscoelasticity of the synthetic ECM and its mechanism are rarely reported.
Yanqin Wang   +3 more
doaj  

Soft‐Layered Composites with Wrinkling‐Activated Multi‐Linear Elastic Behavior, Stress Mitigation, and Enhanced Strain Energy Storage

open access: yesAdvanced Engineering Materials, EarlyView.
In this study, exciting new bi‐/multi‐linear elastic behavior of soft elastic composites that accompany the activation of wrinkling in the embedded interfacial layers is analyzed. The new features and performance of these composite materials, including dramatic enhancements in energy storage, can be tailored by the concentration of interfacial layers ...
Narges Kaynia   +2 more
wiley   +1 more source

Dispersion and attenuation for an acoustic wave equation consistent with viscoelasticity [PDF]

open access: yes, 2013
An acoustic wave equation for pressure accounting for viscoelastic attenuation is derived from viscoelastic equations of motion. It differs significantly from the equations proposed by Szabo. Dispersion and attenuation associated with the viscoelastic wave equation is examined.
arxiv   +1 more source

Nonlinear Intelligent Control of Two Link Robot Arm by Considering Human Voluntary Components

open access: yesSensors, 2022
This paper proposes a nonlinear intelligent control of a two link robot arm by considering human voluntary components. In general, human arm viscoelastic properties are regulated in different manners according to various task requirements.
Mingcong Deng   +2 more
doaj   +1 more source

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