We have studied the influence of excess protons on the vibrational energy relaxation of the O-H and O-D stretching modes in water using femtosecond pump-probe spectroscopy. Without excess protons, we observe exponential decays with time constants of 1.7 and 4.3 ps for the bulk and anion bound O-D stretch vibrations. The addition of protons introduces a new energy relaxation pathway, which leads...

We introduce a new model for the dynamics of a wormlike chain in an environment that gives rise to a rough free energy landscape, which we baptise the glassy wormlike chain. It is obtained from the common wormlike chain by an exponential stretching of the relaxation spectrum of its long-wavelength eigenmodes, controlled by a single parameter E . Predictions for pertinent observables such as the...

(received ; accepted) PACS. 61.20Lc – Relaxations, time dependent properties. PACS. 61.25Em – Molecular liquids. PACS. 64.70Pf – Liquid glass transition. Abstract. – Structural α relaxation in liquid orthoterphenyl is studied by means of coherent neutron time-of-flight and backscattering spectroscopy over a large temperature range.Not only amplitude and relaxation time but also the spectral lin...

BACKGROUND Quantifying passive stretching responses of individual muscles helps the diagnosis of muscle disorders and aids the evaluation of surgical/rehabilitation treatments. Utilizing an animal model, we demonstrated that shear elastic modulus measured by supersonic shear wave elastography increases linearly with passive muscle force. This study aimed to use this state-of-the-art technology ...

Thermal management is a crucial task in the present era of miniatures and other gadgets compact heat density. This communication presents momentum thermal transportation nanofluid flow over sheet that stretches exponentially. The fluid moves through porous matrix presence magnetic field perpendicular to direction. To achieve main objective efficient with increased conductivity, possible settlin...

stretching is an ancient method of treating soft tissue structures amongst the historical cultures. this method, in addition to other manual techniques such as, massage and manipulation has been taught in ancient medicine. nowadays, a wide range of studies have been performed to reveal the effects of this manual method on different muscle groups in patients, as well as healthy athlete subjects....

In a smooth flow, the leading-order response of trajectories to infinitesimal perturbations in their initial conditions is described by the finite-time Lyapunov exponents and associated characteristic directions of stretching. We give a description of the second-order response to perturbations in terms of Lagrangian derivatives of the exponents and characteristic directions. These derivatives a...

abstract background: restless leg syndrome prevalence is high among the patients undergoing hemodialysis. due to several side effects of medicational treatments, the patients prefer non-medicational methods. therefore, the present study aimed to investigate the effects of two methods of reflexology and stretching exercises on the severity of restless leg syndrome among patients undergoing hemod...

Abstract Hybrid nanofluids, which are formed by dispersing two solid materials in a conventional fluid, have recently attracted the attention of researchers as they able to improve thermal properties. The present article, therefore, conducts numerical analysis investigate heat transfer magnetohydrodynamic three-dimensional flow magnetic nanofluid (ferrofluid) across bidirectional exponentially ...

Abstract In this paper, we presented a domain decomposition method via exponential splines for solving singularly perturbed two-point boundary value problems with the boundary layer at one end (left or right) point. The method is distinguished by the following fact: The original singularly perturbed two-point boundary value problem is divided into two problems, namely inner and outer region pro...