Results 81 to 90 of about 1,168,061 (327)

Absence of Phase Stiffness in the Quantum Rotor Phase Glass

, 2003
We analyze here the consequence of local rotational-symmetry breaking in the quantum spin (or phase) glass state of the quantum random rotor model. By coupling the spin glass order parameter directly to a vector potential, we are able to compute whether ...
A. van Otterlo, B.I. Halperin, D. Dalidovich, D. Dalidovich, D. Dalidovich, Denis Dalidovich, G. Aeppli, G. Kotliar, H. Maletta, H. Sompolinsky, I.A. Campbell, K. Binder, M. Mezard, M.V. Feigel’man, N. Read, O. Parcollet, Philip Phillips, R.E. Walstedt, S.M. Shapiro   +18 more
core   +1 more source

HBV co-infection is associated with persistently elevated liver stiffness measurement in HIV-positive adults: A 6-year single-centre cohort study in Nigeria [PDF]

, 2021
Adovich S. Rivera, Stephen Machenry, Jonathan Okpokwu, Bola Olatunde, Placid Ugoagwu, Muazu Auwal, Halima Sule, Patricia Agaba, Oche Agbaji, Chloe L. Thio, Robert L. Murphy, Claudia Hawkins   +11 more
openalex   +1 more source

Geometric Optimization and Mechanical Performance Enhancement of Auxetic Structures for High‐Impact Applications Through Fused Deposition Modeling

Advanced Engineering Materials, EarlyView.
This study explores the mechanical performance of three auxetic structures, identifying a re‐entrant‐star hybrid as the most effective for impact absorption. Finite element simulations and experiments demonstrate significant gains in energy absorption and flexural strength after geometric optimization. This study investigates the mechanical performance
Malik Hassan, Manjusri Misra, Alexander Bardelcik, Stefano Gregori, Amar K. Mohanty   +4 more
wiley   +1 more source

Are better conducting molecules more rigid?

, 2006
We investigate the electronic origin of the bending stiffness of conducting molecules. It is found that the bending stiffness associated with electronic motion, which we refer to as electro-stiffness, $\kappa_{e}$, is governed by the molecular orbital ...
Dresselhaus M. S., Grest G. S., Halerin A., Hawoong Jeong, Henri Orland, Juyeon Yi, Young-Ho Eom   +6 more
core   +2 more sources

Elastic Foundations as Heterogeneous Adventitial Boundary Condition for the Assessment of Aortic Wall and Peri-Aortic Stiffness from Dense-MRI Data Using Inverse FEM Approach [PDF]

, 2020
Background: The establishment of in vivo, patient-specific, and regionally resolved techniques to quantify aortic properties is key for improving risk assessment in clinical practice and scientific understanding of cardiovascular growth and remodeling ...
Bracamonte, Johane H., Soares, Joao S., Wilson, John S.   +2 more
core   +1 more source

Vitamin D Supplementation on Carotid Remodeling and Stiffness in Obese Adolescents [PDF]

, 2022
Christopher S. Morrissey, Marie Josèphe Amiot, Aurélie Goncalves, C. Raverdy, Delphine Masson, Catherine Tardivel, Sandrine Gayrard, Myriam Carrère, Jean‐François Landrier, Agnès Vinet, Antonia Pérez‐Martin   +10 more
openalex   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

Advanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji, Monnamme Tlotleng, Samuel Skhosane, Lehlogonolo R. Kanyane, Abimbola P. I. Popoola, Sisa L. Pityana   +5 more
wiley   +1 more source

Theoretical Analysis and Experiment of the Five DOF Hybrid Robot P(RPR/RP)RR

IEEE Access
To meet the demands of machining new energy vehicles aluminum alloy structures, this paper introduced a five degree-of-freedom (DOF) hybrid robot, P(RPR/RP)RR, and conducted a systematic investigation into its kinematics, stiffness, and preliminary ...
Xuejian Ma, Xiaoyu He, Yundou Xu, Jiantao Yao, Yongsheng Zhao   +4 more
doaj   +1 more source

Accuracy Improvement for Stiffness Modeling of Parallel Manipulators [PDF]

, 2009
The paper focuses on the accuracy improvement of stiffness models for parallel manipulators, which are employed in high-speed precision machining. It is based on the integrated methodology that combines analytical and numerical techniques and deals with ...
Chablat, Damien, Klimchik, Alexandr, Pashkevich, Anatoly, Wenger, Philippe   +3 more
core   +4 more sources

Fabrication‐Directed Entanglement for Designing Chiral and Anisotropic Metamaterial Foams

Advanced Engineering Materials, EarlyView.
This work introduces fabrication‐directed entanglement (FDE), combining viscous thread printing and topology optimization to program entangled foams with spatially patterned stiffness. By tuning coil density, FDE enables anisotropy, programmable Poisson's ratio, and chirality in foams.
Daniel Revier, Brett Emery, Jacob Miske, Jeffrey Lipton   +3 more
wiley   +1 more source