Materials Literature
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In recent years, considerable research has been done to replace chrome tanning with alternative tanning systems. But there are very few methods that are environmentally friendly and cost effective that give leather with performance as good as chrome tanned leather. DasGupta and Debchoudhury reported systems based on o…
Fine structure of the dry adhesion system in the tarsal appendages of the jumping spider Plexippus setipes (Araneae: Salticidae) with examined using field emission scanning electron microscope (FESEM). The jumping spiders have the distinctive attachment apparatus for adhesion on smooth dry surface without sticky fluid…
This chapter discusses the much more complex mechanical behaviors associated with inelastic deformations. Although the grain size, volume fraction and composite approaches discussed in the last chapter are still relevant, the interactions between the size scales and the deformation mechanisms involved in plasticity do…
By investigating the spin configuration in ferromagnetic multilayer under stress field, the dependence of magnetoresistance （MR） upon the stress field in the ferromagnetic multilayer is discussed. The stress field can induce MR, and the MR strongly depends on both the value and the direction of the stress field. Gener…
The influence on the motion of single solid particles in a Newtonian fluid by melting and convection was directly simulated. The fluid motion was computed from the conservation laws. Density and viscosity change with the fluid temperature, the particles move according to the equations of motion of a rigid body under t…
This paper deals with the influence of the processing conditions on the material properties and wear characteristics of chromium pre-alloyed sintered steels. Three different processing conditions were used, involving different cooling rates from the sintering temperatures of 1180°C and 1240°C. A conventional (slow) co…
(Submitted by Academician Ja. Ivanov on March 24, 2009)AbstractThe junctions of carbon nanotubes and flat graphene sheets or betweennanotubes are structures with various potential applications in building nano-and micro-electromechanicalsystems. Here we report the results of a continuumapproach to the determination of…
Abstract: The paper presents development of an equivalent circuit model of a traction transformer with coiled iron core intended for studies of transformer behavior in a traction drive system. The model accounts for the nonlinear B-H characteristic and anisotropic properties of the coiled core. Derivation of the model…
This paper presents a CSTR SOFC model including charge balance together with anode and cathode electrochemical reactions. The new charge balance equations are defined as boundary conditions at the electrode/electrolyte interface. Numerical impedance experiment is used to analyse the electrochemical properties of the c…
Abstract: In the nanomachining of semiconductors and ceramics, especially brittle materials such as silicon carbide, the presence of high pressure phase transformation is of great importance for accomplishing ductile regime machining [1]. To augment the ductile regime machining of these nominally brittle materials, th…
Multidrug resistance (MDR) is a major obstacle limiting chemotherapeutic efficacy. The purpose of these studies was to investigate the potential application of injectable paclitaxel (PX) and doxorubicin (Dox)-loaded nanoparticles (NPs) engineered from oil-in-water microemulsion precursors for overcoming P-glycoprotein…
Nyctanthes arbortristis Linn, is one of the well known medicinal plant. In the present study cancer chemopreventive property of a hydroalcoholic ext. of the leaves of N. arbortristis at a dose of 250 mg/kg body wt. was evaluated on 7,12- dimethylbenz(a)anthracene (50 I¼g/100 I¼L of acetone) initiated, croton oil (1% i…
This paper presents the model based on the theory of multicomponent media that allows modelling of rebar corrosion processes. The presented model extends and consolidates the dissertations that have been described in the papers [8-10]. The aim of the present work is a creation of the model consistent with the thermody…
Hafnium dioxide thin films were deposited on fused silica substrates by reactive electron beam evaporation at three different substrate temperatures. After deposition, hafnium dioxide thin films were annealed in the ambient atmosphere for two hours at 500 °C and 1000 °C, respectively. X-ray diffractometry was used to…
The aim of this work was to determine the correlation between catalytical activity of copper supported catalysts 60%Cu/support (FeAlO 3 , ZnAl 2 O 4 ) in methanol synthesis and their physicochemical properties. Surface area measurements (BET), X-ray diffraction (XRD) and temperature-programmed reduction (TPR-H 2 ) tec…
The specific heat of liquid Ni60Cu20Fe20 ternary alloy was measured by electromagnetic levitation drop calorimetry in the temperature range from 1436 to 2008K. The maximum undercooling achieved in experiment is 232K (0.14TL). The specific heat was determined as 33.27J·mol-1·K-1 which varied slightly with temperature.…
A series of Cu(II), Ni(II) and Co(III) complexes of the type [M(L n ) 2 (H 2 O) 2 (BF 2 ) 2 ] and [Co(L n ) 2 PyCl(BF 2 ) 2 ] (where M = Cu(II) orNi(II); n = 1, 2; L= bidentate dioxime ligands) have been synthesized by the reactions of dioxime complexes with boron trifluoride diethyl ether complex in acetonitrile unde…
Structure transformation and microstructure of the electrode active materials in a graphite / Li （Ni1/3Co1/3Mn1/3）O2 lithium ion battery during charge-discharge process have been studied by XRD. It is found that the lattice parameter of Li （Ni1/3Co1/3Mn1/3）O2, a and c, decrease and increase respectively. Its micro-str…
The heat capacity in the applied magnetic field up to 9 T, susceptibility and magnetization of polycrystalline CeCu4Ga are presented.Magnetic ordering was not observed down to 2 K.For temperature T < 200 K a Curie-Weiss behavior is observable giving an effective magnetic moment µ eff = 2.53 µB/f.u.The experimental val…
Theoretical simulation of the bandshape and fine structure of the N-H(D) stretching bands is presented for 2,4-dithiouracil and its deuterated derivative taking into account anharmonic coupling between the high-frequency N-H(D) stretching and the low-frequency N···S stretching vibrations, resonance interaction between…