Self-action and effects mutually induced by oscillations interacting in hysteretic media are investigated analytically and numerically. Special attention is paid to non-simplex processes for which presence of intermediate extrema results in appearance of minor nested loops inside the main hysteretic stress-strain loop. Non-simplex regimes are typical of interaction of excitations having different frequencies and amplitudes, but comparable strain rates. It is found that, due to transition between the regimes, frequency and amplitude dependencies of the variations in elasticity and dissipation induced by one wave for another one may become non-monotonous. Either additional dissipation or induced transparency may occur in different regimes. The results obtained are important for correct interpretation of experimental data on nonlinear acoustic interactions in rocks and many other microstructured (mesoscopic) solids that are known to exhibit elastic hysteresis and memory properties.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ultras.2005.01.005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An evolutionarily conserved cation channel tunes the sensitivity of gustatory neurons to ephaptic inhibition in .
Proc Natl Acad Sci U S A
January 2025
Neurovascular Unit Research Group, Korea Brain Research Institute, Daegu 41062, Republic of Korea.
In ephaptic coupling, physically adjacent neurons influence one another's activity via the electric fields they generate. To date, the molecular mechanisms that mediate and modulate ephaptic coupling's effects remain poorly understood. Here, we show that the hyperpolarization-activated cyclic nucleotide-gated (HCN) channel lateralizes the potentially mutual ephaptic inhibition between gustatory receptor neurons (GRNs).
View Article and Find Full Text PDFQuantitative Analysis of Multi-Elements in a Micron-Sized Single Particle Based on Laser-Induced Breakdown Spectroscopy Signal Enhancement of an Optical Fiber Collimated System.
Anal Chem
January 2025
College of Chemistry and Material Science, Northwest University, Xi'an 710127, China.
With rapid, energy-intensive, and coal-fueled economic growth, global air quality is deteriorating, and particulate matter pollution has emerged as one of the major public health problems worldwide. It is extremely urgent to achieve carbon emission reduction and air pollution prevention and control, aiming at the common problem of weak and unstable signals of characteristic elements in the application of laser-induced breakdown spectroscopy (LIBS) technology for trace element detection. In this study, the influence of the optical fiber collimation signal enhancement method on the LIBS signal was explored.
View Article and Find Full Text PDFMechanically Interlocked Molecular Rotors on Pb(100).
Nano Lett
January 2025
Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität, 24098 Kiel, Germany.
The mechanical coupling between molecules represents a promising route for the development of molecular machines. Constructing molecular gears requires easily rotatable and mutually interlocked pinions. Using scanning tunneling microscopy (STM), it is demonstrated that aluminum phthalocyanine (AlPc) molecules on Pb(100) exhibit these properties.
View Article and Find Full Text PDFInvestigating the interaction between calcium signaling and ferroptosis for novel cancer treatment.
Phytomedicine
January 2025
Cancer Center, Faculty of Health Sciences, University of Macau, Macau (SAR), China. MOE Frontiers Science Center for Precision Oncology, University of Macau, Macau (SAR), PR China. Electronic address:
Article Synopsis
- Drug resistance in cancer is increasing, highlighting the need for new therapeutic targets, particularly through ion interference strategies involving calcium ions (Ca).
- The study investigates the link between calcium ions and ferroptosis (iron-induced cell death), suggesting that disrupted calcium balance could lead to increased ferroptosis in cancer cells, providing a novel treatment target.
- Findings indicate that Ca modulates ferroptosis by affecting reactive oxygen species (ROS) and glutathione (GSH) levels in various cancer and normal cells, with potential applications for plant-derived compounds as effective anticancer treatments.
Bone-brain communication mediates the amelioration of Polgonatum cyrtonema Hua polysaccharide on fatigue in chronic sleep-deprived mice.
Int J Biol Macromol
January 2025
Engineering Research Centre of Bioprocess of Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei 230009, People's Republic of China; School of Food and Biological Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei 230009, People's Republic of China. Electronic address:
This study aimed to investigate the anti-fatigue efficacy and underlying mechanisms of Polygonatum cyrtonema Hua polysaccharide (PCP) in chronic sleep-deprived mice. Following three weeks of oral administration, PCP demonstrated significant efficacy in alleviating fatigue symptoms. This was evidenced by the prolonged swimming and rotarod time in the high-dose group of PCP, which increased by 73 % and 64 %, respectively.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!