Results 51 to 60 of about 12,139,664 (308)

Dynamics of shallow impact cratering

Physical Review E, 2005
We present data for the time-dependence of wooden spheres penetrating into a loose non-cohesive packing of glass beads. The stopping time is a factor of three longer than the time $d/v_\circ$ needed to travel the total penetration distance $d$ at the impact speed $v_\circ$. The acceleration decreases monotonically throughout the impact.
Kamien, Randall D, Ambroso, M. A, Durian, Douglas J   +2 more
openaire   +5 more sources

Diet impact on mitochondrial bioenergetics and dynamics [PDF]

Frontiers in Physiology, 2015
Diet induced obesity is associated with impaired mitochondrial function and dynamic behavior. Mitochondria are highly dynamic organelles and the balance in fusion/fission is strictly associated with their bioenergetics. Fusion processes are associated with the optimization of mitochondrial function, whereas fission processes are associated with the ...
Putti, Rosalba, Sica, Raffaella, Migliaccio, Vincenzo, LIONETTI, Lilla'   +3 more
openaire   +4 more sources

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Experimental and Numerical Study on Plastic Behavior of Expansion Tubes Subjected to Impact

Applied Sciences
Aiming to study the plastic behavior of expansion tubes, this paper presents experimental studies on Q420 and S2205 steel tubes and investigates the influence of key parameters on the responses of the expansion tube. A finite element model is established
Di Jiang, Yiqun Yu, Lihua Wu, Xvdong Zhi, Haiqing Li, Feng Fan, Rong Zhang   +6 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Application of dynamic key curves for the determination of the impact fracture toughness of polymers at high rates of loading

, 2022
S.59-71The Technical Committee on Polymers and Composites of the European Society of Structural Integrity (ESIS) is currently preparing a specification for the determination of the fracture toughness, K Ic, for polymers at high loading-rates.
Böhme, W.
core   +1 more source

Bioinspired and Multifunctional Tribological Materials for Sliding, Erosive, Machining, and Energy-Absorbing Conditions: A Review

Biomimetics
Friction, wear, and the consequent energy dissipation pose significant challenges in systems with moving components, spanning various domains, including nanoelectromechanical systems (NEMS/MEMS) and bio-MEMS (microrobots), hip prostheses (biomaterials ...
Rahul Kumar, Mansoureh Rezapourian, Ramin Rahmani, Himanshu S. Maurya, Nikhil Kamboj, Irina Hussainova   +5 more
doaj   +1 more source

Chaotic Dynamics in an Impact Problem [PDF]

Annales Henri Poincaré, 2014
We consider the model describing the vertical motion of a ball falling with constant acceleration on a wall and elastically reflected. The wall is supposed to move in the vertical direction according to a given periodic function $f$. We show that a modification of a method of Angenent based on sub and super solutions can be applied in order to detect ...
openaire   +4 more sources

Collisional model for granular impact dynamics [PDF]

Physical Review E, 2014
When an intruder strikes a granular material from above, the grains exert a stopping force which decelerates and stops the intruder. Many previous studies have used a macroscopic force law, including a drag force which is quadratic in velocity, to characterize the decelerating force on the intruder.
Clark, Abram H., Petersen, Alec J., Behringer, Robert P.   +2 more
openaire   +3 more sources