magnetic field B5F0( 1 3 , 1 3 , 1 3 ), using Monte Carlo simulation. There is a clear first-order phase transition with a latent heat of melting of about 0.11kBTm per superconducting grain at a melting temperature Tm'0.70J , where J is the intergrain coupling energy. We briefly discuss the possible relation of this transition to fluxlattice melting in high-Tc superconductors. @S0163-1829~96!00...

Polymer crystal melting kinetics is simulated by using molecular dynamics. A simplified molecular model of polyethylene crystal melting consisting of one extended chain on a polyethylene-like crystal surface is presented. The simulation data indicate that the end-to-end distance (eed) of radius of gyration (rg) has a simple exponential dependence on time. The rate constants for eed and rg are f...

a statistical mechanical based equation of state has been employed to calculate the liquid density of lead, mercury, bismuth and lead-bismuth and lead-lithium eutectic alloys.the equation is basically that of song, mason and ihm [ihm g, song y, mason ea. j. chem. phys.1991; 94: 3839] which is modified by ghatee and boushehri. three temperature dependent parameters are required to use this equat...

A novel single nucleotide polymorphisms (SNPs) detection scheme was proposed by conducting melting analysis on microbeads. These beads were utilized to immobilize target DNA duplex, and flowing through a well-controlled temperature-gradient region in microchannels on a microfluidic chip. As the microbeads going through from low temperature regions to high temperature regions, the DNA duplex den...

The temperature evolution of the chiral condensates in a gas made of pions, kaons and etas is studied within the framework of SU(2) and SU(3) Chiral Perturbation Theory. We describe the temperature dependence of the quark condensates by using the meson meson scattering phase shifts in a second order virial expansion. We find that the SU(3) formalism yields an extrapolated melting temperature fo...

The melting behavior of low molecular weight poly(ethylene oxide) (PEO) fractions has been studied via generalized two-dimensional infrared (2D-IR) correlation spectroscopy and a new stochastic-pulse-based temperature modulation differential scanning calorimetry (DSC) technique (TOPEM). 2D-IR correlation analysis of the melting of PEO shows that nu(s)(CH2) and gamma(a)(CH2) vary prior to nu(s)(...

We propose a new model for the brittle-to-ductile transition based on the Kosterlitz-Thouless concept of dislocation screening. In this model, thermal fluctuations assisted by the applied stress drive the spontaneous generation of dislocations and the instability occurs well below the melting temperature. In the limit of zero stress, our model reduces to the Kosterlitz-Thouless theory of the me...

Multilayers composed of materials with low Sn and high Si bulk melting points were grown at room temperature by ultrahigh vacuum deposition. Sn Mössbauer spectroscopy has been used to investigate the temperature dependence of the Debye-Waller factor f , the mean-square displacement, and the mean-square velocity of Sn nuclei in ultrathin 10 Å thick -like Sn layers embedded between 50 Å thick Si ...