First-principles calculations have been performed in order to determine effective exchange integrals between strongly and weakly exchange-biased Co monolayers in the modulated CoCu 2 /CoCu n superlattices. For 3 ≤ n ≤ 6 it has been found that the respective exchange integrals have opposite signs and differ for n = 4 from each other by one order of magnitude and for n = 4 still by a factor of ∼ ...

Unilateral contact problems in elasticity (Duvaut and Lions, 1976) have been extensively studied in the last two decades (Andersson and Klarbring, 2001; Angelov and Liolios, 2004; Cǎpǎtinǎ and Cocu, 1991; Cocu, 1984; Demkowicz and Oden, 1982; Duvaut and Lions, 1976; Hlavaček et al., 1988; Kikuchi and Oden, 1988; Klarbring et al., 1989; Lee and Oden, 1993a,1993b; Ne čas et al., 1980; Oden and Ca...

In this study, CoCu alloy nanoparticles-incorporated carbon nanofibers are introduced as effective non precious electrocatalyst for methanol oxidation in alkaline medium. The introduced electrocatalyst has been synthesized by simple and effective process; electrospinning. Typically, calcination, in nitrogen atmosphere, of electrospun nanofibers composed of cobalt acetate, copper acetate and pol...

First-principles calculations have been performed in order to determine effective exchange integrals between strongly and weakly exchange-coupled Co monolayers in certain modulated periodic CoCu 2 /CoCu n-type superlattices with three non-equivalent Co planes, which have not yet been studied hitherto. For 3 ≤ n ≤ 6 we find that the two non-equivalent exchange integrals have opposite signs, i.e....

We reported a facile one-pot synthesis of bimetallic CoCu nanoparticles (NPs) anchored on graphene hydrogel (GH-CoCu) as catalysts in hydrogen generation from the hydrolysis ammonia borane (HAB). The presented novel method composed reduction mixture oxide, cobalt(II), and copper(II) acetate tetrahydrates by aqueous ethylene glycol solution teflon-coated stainless-steel reactor at 180 °C. struct...

 Externally Bonded Reinforcement on Grooves (EBROG) is a new method that has been introduced to postpone or eliminate debonding of FRP sheets from concrete surface in concrete beams strengthened for flexure and increase loading capacity. For strengthening reinforced conceret beams in strructure, use of different types of FRP like: laminate, AFRP, CFRP, and GFRP. By there is some differences bet...

externally bonded reinforcement on grooves (ebrog) is a new method that has been introduced to postpone or eliminate debonding of frp sheets from concrete surface in concrete beams strengthened for flexure and increase loading capacity. for strengthening reinforced conceret beams in strructure, use of different types of frp like: laminate, afrp, cfrp, and gfrp. by there is some differences betw...

Two novel heterotrimetallic octa-[Cu2CoPbCl4(L)4]2 (1) and pentanuclear [Cu2CoCd2Cl6(L)4(HOMe)2] (2) complexes have been prepared in one-pot reactions of zerovalent copper with metal chlorides in a methanol (for 1) or acetonitrile (for 2) solution of 2-(dimethylamino)ethanol (HL) in open air. The crystal structures of both compounds consist of discrete centrosymmetric heterotrimetallic molecule...

Ni-Co/Cu multilayers have been grown by electrodeposition method from a single electrolyte (based on Ni(SO4).6H2O, Co(SO4).7H2O, Cu(SO4) and H3BO3) using galvanostatic control on titanium sublayers. The X-ray diffraction (XRD) patterns confirmed the multilayered structure with the nanometer thicknesses. Also, electron diffraction x-ray (EDX)  analysis confirmed the purity of deposited samples. ...