نتایج جستجو برای: melting point

تعداد نتایج: 547590  

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
R M Yulmetyev A V Mokshin P Hänggi V Y Shurygin

The realization of the idea of time-scale invariance for relaxation processes in liquids has been performed by the memory functions formalism. The best agreement with experimental data for the dynamic structure factor S(k,omega) of liquid cesium near melting point in the range of wave vectors (0.4 A(-1) < or = k < or = 2.55 A(-1)) is found with the assumption of concurrence of relaxation scales...

2015
Michael A. Buonaiuto Andrew S. I. D. Lang

BACKGROUND 1-Octanol solubility is important in a variety of applications involving pharmacology and environmental chemistry. Current models are linear in nature and often require foreknowledge of either melting point or aqueous solubility. Here we extend the range of applicability of 1-octanol solubility models by creating a random forest model that can predict 1-octanol solubilities directly ...

2012
José Luis Costa-Krämer Natalia León Carlo Guerrero Marisel Díaz

Aluminum nanocontact conductance histograms are studied experimentally from room temperature up to near the bulk melting point. The dominant stable configurations for this metal show a very early crossover from shell structures at low wire diameters to ionic subshell structures at larger diameters. At these larger radii, the favorable structures are temperature-independent and consistent with t...

Journal: :The Journal of chemical physics 2006
C Vega J L F Abascal I Nezbeda

The vapor-liquid equilibria of three recently proposed water models have been computed using Gibbs-Duhem simulations. These models are TIP4P/Ew, TIP4P/2005, and TIP4P/ice and can be considered as modified versions of the TIP4P model. By design TIP4P reproduces the vaporization enthalpy of water at room temperature, whereas TIP4P/Ew and TIP4P/2005 match the temperature of maximum density and TIP...

Journal: :The Journal of chemical physics 2004
Marcio Luis Ferreira Nascimento Eduardo Bellini Ferreira Edgar Dutra Zanotto

Extensive data on the viscosity, covering 15 orders of magnitude, and crystal growth rate, covering seven orders of magnitude, of liquid diopside (CaO.MgO.2SiO(2)) were collected in a wide range of undercoolings from 1.10T(g) to 0.99T(m) (T(g) is the glass transition temperature and T(m) the melting point). The raw growth rate data were corrected for the increased interfacial temperature produc...

Journal: :Advanced materials 2016
Alice Tonazzini Stefano Mintchev Bryan Schubert Barbara Mazzolai Jun Shintake Dario Floreano

A variable stiffness fiber made of silicone and low melting point alloys quickly becomes >700 times softer and >400 times more deformable when heated above 62 °C. It shows remarkable self-healing properties and can be clamped, knitted, and bonded, as shown in a foldable multi-purpose drone, a wearable cast for bone injuries, and a soft multi-directional actuator.

Journal: :The Journal of chemical physics 2006
Ramón García Fernández José L F Abascal Carlos Vega

In this work we present an implementation for the calculation of the melting point of ice I(h) from direct coexistence of the solid-liquid interface. We use molecular dynamics simulations of boxes containing liquid water and ice in contact. The implementation is based on the analysis of the evolution of the total energy along NpT simulations at different temperatures. We report the calculation ...

Journal: :Physical review letters 2005
D Schebarchov S C Hendy

We have used molecular dynamics simulations to construct a microcanonical caloric curve for a 1415 atom Ni icosahedron. Prior to melting, the Ni cluster exhibits static solid-liquid phase coexistence. Initially, a partial icosahedral structure coexists with a partially wetting melt. However, at energies very close to the melting point the icosahedral structure is replaced by a truncated decahed...

Journal: :Physical review letters 2006
F J Bermejo J W Taylor S E McLain I Bustinduy J F C Turner M D Ruiz-Martin C Cabrillo R Fernandez-Perea

Inelastic neutron scattering data from liquid DF close to the melting point show, in addition to spectra comprising quasielastic and heavily damped acoustic motions, an intense, nondispersive band centered at about 27 meV along with a broader higher energy feature. Observation of the former band provides the first direct verification of the existence within the liquid state of collective opticl...

Journal: :Clinical chemistry 2014
Jacklyn W S Ng Deborah C Holt Patiyan Andersson Philip M Giffard

1. Algeciras-Schimnich A, Bruns DE, Boyd JC, Bryant SC, LaFortune KA, Grebe SKG. Failure of current laboratory protocols to detect lot-to-lot reagent differences: findings and possible solutions. Clin Chem 2013;59:1187–94. 2. Bais R. What information should manufacturers provide on their procedures? Clin Chem 2006; 52:1624–5. 3. Bais R, Armbruster D, Jansen RTP, Klee G, Panteghini M, Passarelli...

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