Results 31 to 40 of about 2,700 (218)

Parametric Instability of Functionally Graded Porous Cylindrical Panels under the Effect of Static and Time-Dependent Axial Loads

Vibration, 2022
This work presents an analytical study of the parametric instability of cylindrical panels containing functionally graded porous exposed to static and dynamic periodic axial loads under simply supported boundary conditions. Based on Hamilton’s principle,
Salah M. Zaidan, Hamad M. Hasan
doaj   +1 more source

Thermoelastic Vibration of Functionally Graded Porous Euler–Bernoulli Beams Using the Differential Transformation Method

Applied Sciences
Functionally graded porous beams are increasingly used in lightweight engineering structures, where thermal effects and material inhomogeneity significantly influence vibration behavior.
Selin Kaptan, İbrahim Özkol
doaj   +1 more source

Free vibration analysis of functionally graded porous circular and annular plates using differential quadrature method

Forces in Mechanics, 2022
The research aims to find the fundamental frequencies of functionally graded (FG) porous circular and annular plates while accounting for three alternative porosity distributions in the thickness direction: uniform, O-shape, and X-shape. In the thickness
Dilsukh Vasara, Sumit Khare, Harish Kumar Sharma, Rahul Kumar   +3 more
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

A Time-Domain Solution Method for the Vibration Performance of Viscoelastic Functionally Graded Porous Beams

Vibration
The viscoelastic behavior of functionally graded (FG) materials significantly affects their vibration performance, making it necessary to establish theoretical analysis methods.
Yuhua Cui, Tao Zeng, Yipeng Yang, Xiaohong Wang, Guodong Xu, Su Cheng   +5 more
doaj   +1 more source

Gyroid-based functionally graded porous titanium scaffolds for dental application: Design, simulation and characterizations

Materials & Design, 2022
To improve the mechanical compatibility and biocompatibility of porous scaffolds for dental application, functionally graded porous titanium scaffolds with average porosity of 20–80 % were designed and fabricated by selective laser melting.
Wei Xu, Aihua Yu, Yu Jiang, Yageng Li, Ce Zhang, Harsh-preet Singh, Bowen Liu, Chenjin Hou, Yun Zhang, Shiwei Tian, Jiazhen Zhang, Xin Lu   +11 more
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Vibration Analysis of Different Types of Porous FG Conical Sandwich Shells in Various Thermal Surroundings [PDF]

Journal of Applied and Computational Mechanics, 2020
Vibration behavior of different types of porous functionally graded (FG) conical sandwich shells are investigated based on a modified high order sandwich shells theory for the first time. Sandwich shell includes FG face sheets covering a homogeneous core
Mohsen Rahmani, Younes Mohammadi, Farshad Kakavand, Hamed Raeisifard   +3 more
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Research on the mechanical behaviour of functionally graded porous sandwich plates using a new C1 finite element procedure

Results in Engineering, 2023
This article develops a new C1 rectangular element based on Shi's third-order shear deformation plate theory (TSDT) for the static and dynamic analysis of functionally graded porous (FGP) sandwich plates.
Thanh Hung Nguyen, Truong Thanh Nguyen, Trung Thanh Tran, Quoc-Hoa Pham   +3 more
doaj   +1 more source