Results 91 to 100 of about 947,996 (305)

A study on task difficulty and acceleration stress [PDF]

, 1981
The results of two experiments which relate to task difficulty and the effects of environmental stress on tracking performance are discussed and compared to subjective evaluations.
Repperger, D. W., Rogers, D. B.
core   +1 more source

A Stress/Displacement Virtual Element Method for Plane Elasticity Problems

, 2017
The numerical approximation of 2D elasticity problems is considered, in the framework of the small strain theory and in connection with the mixed Hellinger-Reissner variational formulation. A low-order Virtual Element Method (VEM) with a-priori symmetric
Artioli, E., de Miranda, S., Lovadina, C., Patruno, L.   +3 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Traction-Associated Peridynamic Motion Equation and Its Verification in the Plane Stress and Fracture Problems. [PDF]

Materials (Basel), 2023
Yu M, Zhou Z, Huang Z.
europepmc   +1 more source

Periodic boundary conditions on the pseudosphere

, 2007
We provide a framework to build periodic boundary conditions on the pseudosphere (or hyperbolic plane), the infinite two-dimensional Riemannian space of constant negative curvature.
Alimohammadi M, Anglès d'Auriac J C, Baek S K, Beardon A F, Belo L R A Oliveira-Neto N M Moura-Melo W A Pereira A R Ercolessi E, Birrel N B, Comtet A, Coxeter H S M, Coxeter H S M, Doyon B, F Sausset, Frenkel D, G Tarjus, Giomi L Bowick M J, Hansen J P, Hasegawa I Sakaniwa Y Shima H, Hilbert D, Klein F, Kléman M, Landau D P, Magnus W, Nakahara M, Nechaev S, Nelson D R, Poincaré H, Rietman R, Sadoc J-F, Sausset F Tarjus G Viot P, Shima H, Shima H, Tarjus G, Ueda K Krcmar R Gendiar A Nishino T, Yuncken R   +32 more
core   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Plane residual stress measurement using ultrasonic considering weak anisotropy of metallic material

AIP Advances, 2018
Ultrasonic velocity variation (UVV) along different directions induced by material weak anisotropy will lead to residual stress measurement error using ultrasonic inevitably.
Yongqing Wang, Yapeng Li, Haibo Liu, Xiang Zhang, Yankun Liu, Kuo Liu   +5 more
doaj   +1 more source

Applicable conditions and analytical corrections of plane strain assumption in the simulation of hydraulic fracturing

Petroleum Exploration and Development, 2017
Plane stain assumption is widely used in the simulation of the distribution of stress and displacement around hydraulic fractures. According to the comparison of the solutions of elliptical fracture and plane stain fracture, the applicable conditions of ...
Jinzhou ZHAO, Yu PENG, Yongming LI, Zhisheng TIAN   +3 more
doaj   +1 more source

A Homogeneous Anisotropic Hardening Model in Plane Stress State for Sheet Metal under Nonlinear Loading Paths. [PDF]

Materials (Basel), 2023
Zhu H, Lin Y, Chen K, He Z, Yuan S.
europepmc   +1 more source

Thermodynamic dislocation theory: Bauschinger effect

, 2018
The thermodynamic dislocation theory developed for non-uniform plastic deformations is used here to simulate the stress-strain curves for crystals subjected to anti-plane shear-controlled load reversal.
Le, Khanh Chau, Tran, Tuan Minh
core   +1 more source