Materials Literature
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Atmospheric pressure plasma jet was employed to improve adhesion between polypropylene (PP) column wall and monolith used in chromatography. Different treatment conditions for modification of PP tube were used and the effects of treatment were analysed with X-ray photoelectron spectroscopy (XPS) and atomic force micro…
Present study focusses on the extracellular synthesis of nanosilver using the cell filtrate extract of the filamentous fungus Aspergillus sp. isolated from the soil. Thecolour of the cell filtrate changes in to brown upon addition of silver nitrate suggest the nanoparticle formation. These nanoparticles were further a…
Various metal tartrate crystals find different applications. In the present study, the lead-iron mixed levo tartrate crystals with different compositions were grown by using silica hydro gels as the growth medium. Long, dendrite, white crystals were grown. From EDAX the exact composition of lead and iron was estimated…
In the past several decades, quantum phase transition and the associated fluctuations have emerged as a major challenge to our understanding of condensed matter. Such transition is tuned by an external parameter such as pressure, chemical doping or magnetic field. The transition point, called quantum critical point (Q…
Mitigation of the Runaway Electrons (RE) after disruptions present one of the key challenges for safe operation of future fusion reactors. In support of the related research efforts (see e.g. [1]-[7]), systematic studies of generation and losses of RE in the COMPASS tokamak started in early 2014 inthe Framework of the…
La presente tesis tiene dos partes diferenciadas pero complementarias. Por un lado se trata de avanzar en la determinacion de las propiedades termofisicas de materiales de cambio de fase (en adelante PCM) y por otro, de buscar y analizar nuevos materiales de bajo coste que puedan servir para el almacenamiento termico…
Recently some oil/gas fields are being developed in the North-Eastern part of Sakhalin Island where ice drift velocity achieves 1.5 m/sec. High dynamics of ice cover and its considerable thickness cause higher requirements to reliability of offshore ice-resistant platforms (IRP). The problem of estimation of design re…
A discretised Population Balance Equation (PBE) model is coupled with a transported Probability Density Function (PDF) approach to simulate a turbulent methane non-premixed flame. The Lagrangian particle method is used in conjunction with k- turbulence model to solve the particle representations of mixture fraction,…
Charging characteristics of an insulator specimen due to non-penetrated electron irradiation have been attracting a great deal of attention in the fields such as scanning electron microscopy, electron probe analysis, and space irradiation. In this paper, we use a numerical simulation model based on Monte Carlo method…
The phase behavior of bolaamphiphilic solutions is studied by coarse-grained molecular dynamics simulations of semiflexible bolaamphiphilic molecules with explicit solvent molecules. Our simulations show that six kinds of self-assembled structures (spherical micelles, worm-like micelles, bicontinuous structure, hexago…
Optica Applicata, Vol. 45, 2015, nr 3, s. 369-379
Advances in both sensor and computing technologies promise new approaches to discovery in materials science and engineering. For example, it appears possible to integrate theoretical modeling and experiment in new ways, test existing models with unprecedented rigor, and infer entirely new models from first principles.…
By example of steel 17G1S, the regularities in the impact fracture of Charpy specimens at normal and low temperatures are described. The relationship between the energy parameters of fracture (impact toughness) and the deformation response of the material (the height of shear lips) of the specimens from the pipe steel…
Electrical steel sheet have been widely employed as a magnetic core material of electromagnetic equipments. Magnetic materials in the equipments may be excited under two-dimensional AC-magnetization and/or AC-magnetization with DC-biased magnetization. However, the magnetic properties of electrical steel sheets under…
Stress corrosion cracking (SCC) of extruded magnesium alloy AZ80 in 0.004wt% sodium chloride (NaCl) solution at 298K was studied by slow strain rate tensile technique. The alloy was treated with naturally or artificially aging heat treatment. The eutectoid phase was precipitated by artificially aging. The specimen was…
1 , 2 , 2 , 1 , 1 , 1 , 1 ( 1. , ; 2. , 315211) : 0.71Pb(Mg 1/3 Nb 2/3 )O 3 -0.26PbTiO 3 -0.03Pb(Er 1/2 Nb 1/2 )O 3 , Er 3+ PMNT , 25 mm100 mm Er 3+ PMNT , Er 3+ ; Er 3+ PMNT , Er 3+ PMNT PMNT ; 980 nm , Er 3+ ,
In this paper, the effect of fabric thickness and boundary condition at lower temperature side on qmax, an objective measure of fabric warm/cool feeling is investigated through theoretical calculation and experiment. Following results are obtained. The relationship between qmax and fabric thickness is derived through…
A large number of methods have been developed to quantify the cell traction force and its distribution owing to its unique significance in the field of biocytology and tissue engineering. Silicon nanopillar arrays are excellent materials for measuring the force and preventing the problems of other methods because of t…
The influence of 4.5 wt.% copper addition on wear behavior of as-cast Al-12Si alloy prepared by gravity casting is investigated in dry sliding against a steel counterface using a pin-on-disk apparatus. The microstructures of test alloys and worn surfaces were examined by scanning electron microscopy and energy dispers…
Abstract Electrospinning is a popular process for fabricating submicron diameter gibers. The process applies a strong electric gield to launch a polymer jet that elongates to create the gine gibers. The jet dries as the solvent evaporates and the dried giber collects on a grounded surface. Most of electrospinning lite…