Seawalls are built for Protecting of beaches against waves and preventing the progression of water to the beach. For a proper understanding about these constructions, a suiTable information about applied loads on these constructions should be existed. One of the important load that applied on these constructions is sea wave. Others loads are included: weight force of the walls, weight force of ...

This study explored the role of the proton motive force in the processes of DNA binding and DNA transport of genetic transformation of Bacillus subtilis 168 strain 8G-5 (trpC2). Transformation was severely inhibited by the ionophores valinomycin, nigericin, and 3,5-di-tert-4-hydroxybenzylidenemalononitrite (SF-6847) and by tetraphenylphosphonium. The ionophores valinomycin and nigericin also se...

Abstract Inspired by the phenomenon of stone-skipping in life, problem continuous water-skipping trans-media vehicles is widely concerned, which characterized multiphase flow-solid coupling, dynamic boundary, liquid surface fragmentation and high impact loads. Based on Moving Particle Semi-implicit numerical method, this paper investigates disc’s motion characteristics variation, focusing influ...

We report the spontaneous dimerization process of the full-length Aβ42 proteins in water by using unguided, fully atomistic, explicit-water molecular dynamics simulations. Based on the thermodynamic analysis, we demonstrate that Aβ42 dimerization in water occurs via a two-step nucleation-accommodation mechanism driven by water-induced force and by protein internal force, respectively.

At chemical synapses, presynaptic action potentials (APs) activate voltage-gated calcium channels, allowing calcium to enter and trigger neurotransmitter release. The duration, peak amplitude, and shape of the AP falling phase alter calcium entry, which can affect neurotransmitter release significantly. In many neurons, APs do not immediately return to the resting potential, but instead exhibit...

The entry of projectiles into water has been interest to many scientists and engineers, being crucial a wide range engineering applications. problem is nonlinear unsteady phenomenon involving complicated multi-phase flow problems fluid–solid interaction. Many have studying in various conditions through experimental methods numerical methods. In this paper, three-dimensional simulations the are ...