Materials Literature
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Thermal conductivity values at the temperature of 301-303K have been measured for Zea mays straw board as well as Zea mays heartwood (cork) board. Comparative study of the thermal conductivity values of the boards reveal that Zea mays heartwood board has a lower thermal conductivity value to that of the straw board. T…
Non-heme iron(II) oxidases (NHIOs) catalyse a diverse array of oxidative chemistry in Nature. As part of ongoing efforts to realize biomimetic, iron-mediated C-H activation, we report the synthesis of a new 'three-amine-one-carboxylate' ligand designed to complex with iron(II) and mimic the NHIO active site. The tetra…
This article reviews the influence of porosity and pore sizes of titanium and titanium alloys, used as orthopaedic materials, on bioactivity and mechanical properties of the porous structures. The optimal features of porous titanium scaffolds allow the reconstruction and regeneration of bone tissue in loadbearing appl…
Fast dynamic response and small ripple of stator flux and torque is the goal to control induction motor (IM) using direct torque control (DTC). However, convectional two-value hysteresis controller in DTC result in large torque and flux ripples. In this paper, a controller based on fuzzy logic is designed to improve t…
Valence electron spectroscopic imaging (VESI) techniques, taking advantages of the energy-losses suffered by inelastic scattering of the fast electrons in the transmission electron microscope, offer an inherently high spatial resolution to characterize the electronic structure of materials close to the Fermi level. He…
films doped with were grown by atomic layer deposition from tris(2,2,6,6-tetramethyl-3,5-heptanedionato)erbium, bis(methylcyclopentadienyl)methoxymethylzirconium, and ozone as precursors at . The erbium content was 1–5 cation %. The films were uniform in thickness. The films were crystallized already in the as-deposit…
The compatibility of ammonium dinitramide (ADN) with energetic and inert binders was studied in order to detect any interaction between these materials. Differential scanning calorimetry (DSC) and dynamic thermogravimetric analysis (TGA) methods according to STANAG No. 4147 were used for the compatibility test measure…
The structures of Ni/MgO nanoparticles are studied by means of global optimization searches. The results from four different model potentials, sharing the same functional forms but different parametrizations, are reported and compared. Two parametrizations over four give qualitatively correct results, and one of them…
Transport networks with branching structures are observable not only in nature as in trees, blood vessels, etc. but also in efficiently designed transport systems such as used in railway configurations and postage delivery networks. Mathematically, such a branching transport network is modeled by an optimal transport…
The activity of Pt/C and Pd/C catalysts in the dehydrogenation of perhydroterphenyl was studied at conversions lower than 30% depending on the dispersion of platinum and palladium metals, which was estimated by two independent methods (adsorption of CO and X-ray diffraction).
In his seminal work, Kleinberg showed how to augment meshes using random edges, so that they become navigable; that is, greedy routing computes paths of polylogarithmic expected length between any pairs of nodes. This yields the crucial question of determining whether such an augmentation is possible for all graphs. I…
Crystallo-co-agglomeration (CCA) is a novel particle engineering/design technique developed by Kadam et al, to overcome the limitations of spherical crystallization (SC). Basically, it’s single step process used for size enlargement of single, two or more, small dose or large dose drugs, in combination with or without…
A novel non-centrosymmetric zinc phosphate, Zn(HPO4)(H2PO4)·C6H11N2 (denoted NIS-4), was ionothermally synthesized. The framework exhibits fascinating helical channels and remarkably low framework density (FD). Meanwhile, an ionic liquid cation plays a significant structure-directing role during the course of crystall…
Abstract The paper examines influence of near-surface graded-gap layers on electrical characteristics of MIS-structures fabricated on heteroepitaxial Hg1−xCdxTe films grown by molecular beam epitaxy (MBE). Two types of insulators, i.e., two-layer SiO2/Si3N4 and anodic oxide films were used. As it is seen from the dept…
Two species of pseudoscorpions new to science (Neobisium montisageli n. sp. and Roncus peissei n. sp.), collected in Southeastern France, are described, the diagnostic characteristics are illustrated, and their distribution is given. The possible establishment of two species groups of Roncus in Europe is discussed bri…
The high prospects of galvanic displacement for the preparation of high-reactivity mixed catalysts with a small content of platinum metal have been shown for a Pd(Cu)/support system.
Nanoparticles of FePd and FePdPt with the average size of ∼3 nm have been prepared by modified polyol route. As‐prepared nanoparticles are crystallized in fcc phase, whereas, 550–600° C annealed nanoparticles are crystallized in fct phase. As‐prepared samples are superparamagnetic at 300 K, whereas, annealed samples a…
Tight focusing properties of partially coherent radially polarized vortex beams are studied based on vectorial Debye theory. We focus on the focal properties including the intensity and the partially coherent and polarized properties of such partially coherent vortex beams through a high numerical aperture objective.…
Received: J anuary 17,2009 Abstract. ZrTiO4 was obtained from zirconium n-propoxide and titanium isopropoxide, at the Zr:Ti molar ratio of 1:1, in propanol, through the sol-gel process at ambient temperature. ZrTiO4 pow-34ABF4A4CA40C43C74A<0;H0C O \n O 0=3O5>A \t 7'74?>F34AB>1C08=43F4A4 characterized by thermal analys…
Pre-embedding nanogold silver and gold intensification methods involve immunoreactions with nanogold-labeled antibodies and intensification of the nanogold particles before embedding and ultrathin sectioning. These highly sensitive methods show good resolution and ultrastructural preservation. They also are useful for…