The measurements of the magnetic and nematic correlation lengths in a generalization two-dimensional XY model on square lattice are presented using classical Monte Carlo simulation. full phase diagram is reexamined based these lengths, demonstrating their power studying generalized models. ratio between length size has distinctive behaviors which can be used to distinguish different types transition. More importantly, give more insights into tricritical region where paramagnetic, nematic,...

We present a theory of the low-temperature mobility electrons in Gaussian heavily doped zinc oxide surface quantum well (ZnO SFQW), taking into account both impurity and roughness scattering. The also includes strong confinement due to spontaneous polarization charges on ZnO. electron distribution is found be shifted closer for O-polar face, while far away therefrom Zn-polar one. Accordingly, scatterings are remarkably enhanced former case, reduced latter Further, high-temperature Coulomb...

<title>Abstract</title> Heavy metal contamination, particularly hexavalent chromium (Cr(VI)), in water bodies poses severe environmental and health risks. In recent years, using natural adsorbents for removing heavy metals has gained intensive interest thanks to their eco-friendliness cost-effectiveness. this work, lignocellulosic biomass materials were modified employed as remove Cr(VI) from contaminated water. Adsorbent derived <italic>Eichhornia crassipes</italic> showed the significance...

Abstractauthoren Lithium/potassium borohydride LiK(BH) was recently synthesized and reported to be in a Pnma phase at ambient conditions. Subsequent theoretical studies show that this is metastable finite temperatures up 400 K. Studying the of by first-principles calculations, we dynamically stable. Although as previous studies, find it can significantly stabilized compression. Based on structural similarity between reactant LiBH product synthesization reaction, suggest formation may driven...

A theoretical model has been proposed for interpreting the dispersion of low-frequency dielectric constant liquid water with two separate arguments. The first argument relates to dipole orientation in system and second one concerns motions ions towards electrodes. It reveals that compensation between these arguments leads isopermittive point, at which holds range temperature from 301 K 313 K. existence point is also highlighted under view basis thermodynamics. We show only exists a narrow...

We show that the ratio between relaxation lifetimes dominated by roughness-related scatterings in heterostructures is a well-defined function of correlation length. Thus, we propose an efficient method for individual estimation two size parameters interface profiles from transport data. Instead normal simultaneous fitting both to lifetimes, adopt two-step procedure (i) inferring length some lifetime and then (ii) roughness amplitude lifetime. Similarly, roughness-induced linewidths...

Abstract Debye temperature and Frenkel of liquid water at atmospheric pressure are estimated from the modified phonon-polariton model. Moreover, decrease in increase as rising pointed out. The heat capacity is given by phonon theory reported 2012, covering both classical to quantum regimes for motion polariton di˙usion particles. Because ratio between varies 0.8 1.5, leading independence pressure, agreement with experimental work.

We present the theory of an ad hoc mechanism for electron scattering in heavily-doped zinc oxide (ZnO) surface quantum wells (SFQWs). show that carriers must be extra scattered in-plane from roughness-induced fluctuations donor density. In combination with normal potential barrier position, this gives rise to effective roughness-related process, referred as combined roughness (CSR) scattering. The CSR is determined by both and doping profiles. fluctuating density dominates at small angles...

Influences of the symmetric Stone-Wales (SW) defect on electronic transport properties zigzag graphene nanoribbons (ZGNRs) has been studied using $\it{ab}$ $\it{ initio}$ simulation based density functional theory (DFT) combined with non-equilibrium Green's function (NEGF) technique. The calculated transmission spectra T(E) at various bias windows, device densities states (DDOS), current characteristics as well local (LDOS) defective asymmetric and ZGNRs are presented in comparison those for...

Abstract We developed a theoretical model with two separate components for the description of static permittivity aqueous electrolytes versus concentration and temperature. The first component is due to water molecular polarization, whereas second governed by ionic polarization. found that part polarization effect comparable come from molecule at ambient temperatures. microdynamic mechanism phenomenon, which sodium chloride solution 2.8 mol/L holds constant change temperature, clarified....

The microwave conductivity characteristics of electrolyte solutions have attracted much interest researchers because a good understanding their properties plays key role to study fundamental processes in biology and chemistry. In this work, we consider the solution sodium chloride as plasma consisting ions with water background. Its plasmon frequency is calculated by jellium theory. linear dependence on ion concentration explained microscopic approach described combination relationship...

Concentrated tomato is produced typically from tomatoes by the conventional method of concentration. Recently, vacuum-concentration processes have been developed to concentrate and reduce variation caused high temperature. The aim this study simulate water evaporation change juice concentration during vacuum Mathematical simulation models for condensate system are proposed implemented. Matlab's ode45 function used solve differential equations systems. effect temperature on Brix solution was...

Nitrogen generator working by pressure swing adsorption cycle using carbon molecular sieves adsorbent is widely used in industry at small and medium scale recent years, due to its convenience. This equipment that uses a size selective technique separate nitrogen from air. In general, kinetic modeling optimization are commonly analyze the process dynamics of column various operating conditions which parameters such as gas concentration, temperature considered be functions time bed height....