Results 51 to 60 of about 81,942 (347)

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Geometrically Nonlinear Analysis of Functionally Graded Shells Based on 2-D Cosserat Constitutive Model

open access: yesEngineering Transactions, 2014
In this paper geometrically nonlinear analysis of functionally graded shells in 6-parameter shell theory is presented. It is assumed that the shell consists of two constituents: ceramic and metal.
Karol DASZKIEWICZ   +2 more
doaj   +1 more source

Bending and vibration of functionally graded material sandwich plates using an accurate theory

open access: yes, 2012
In this paper, the bending and the free flexural vibration behaviour of sandwich functionally graded material (FGM) plates are investigated using QUAD-8 shear flexible element developed based on higher order structural theory.
Ali   +21 more
core   +1 more source

Elasticity analysis of sandwich pipes with functionally graded interlayers [PDF]

open access: yes, 2016
Acknowledgements Financial support of this research by the Royal Society of Edinburgh and the Italian Academy of Sciences under International Exchanges Bilateral Programme grant is gratefully acknowledged.Peer ...
Kashtalyan, Maria, Sburlati, Roberta
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

A micropolar model for elastic properties in functionally graded materials

open access: yesAdvances in Mechanical Engineering, 2018
By considering the description of phase volume fractions, a micromechanics model is presented for predicting the elastic mechanical properties of isotropic two-phase functionally graded materials. The particle size dependence of the overall elasticity of
Shengyao Fan, Zhanqi Cheng
doaj   +1 more source

Computational modeling of sigmoid functionally graded material (SFGM) plate

open access: yesMaterials Research Express, 2023
The first-order shear deformation theory (FSDT) was used to explore the natural frequency response of functionally graded piezoelectric plates subjected to static electrical and mechanical strain in this present study.
Jai Kumar Sharma   +6 more
doaj   +1 more source

State-space Levy solution for size-dependent static, free vibration and buckling behaviours of functionally graded sandwich plates [PDF]

open access: yes, 2018
The size-dependent static, free vibration and buckling behaviours of functionally graded (FG) sandwich plates are analysed in this study. Utilising the modified couple stress theory and variational principle, governing equations of motion are developed ...
Nguyen, Kien   +4 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Vibration analysis of post-buckled fluid-conveying functionally graded pipe

open access: yesComposites Part C: Open Access, 2021
The vibration of post-buckled fluid-conveying pipe made of functionally graded material is analyzed. The pipe material properties are assumed to be graded in the thickness direction according to power-law distribution.
Abdellatif Selmi, Hedi Hassis
doaj   +1 more source

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