Materials Literature
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An integrated model, which coupled nucleation and crystalline growth with the heat transfer process, is presented in the present paper. The temperature, temperature gradient, cooling rate and the crystalline fraction of Zr65Al7·5Cu17·5Ni10 in suction casting have been calculated with this model. The results show that…
Identification of the most successful strategy for applications in tissue engineering is often confusing, with a wide variety of options and variables available, that can fit into an ideal graft or scaffold. The complexity of the problem is multifold in application of grafts for regeneration of peripheral nerve injuri…
The inverse problem of coupled thermoelasticity is considered in the static, quasi-static, and dynamic cases. The goal is to recover the thermal stress state inside a body from the displacements and temperature given on a portion of its boundary. The inverse thermoelasticity problem finds applications in structural st…
The effects of the chemical composition of borate-containing alumina on its physicochemical properties, catalytic activity, and selectivity in the oligomerization of butenes are reported. The preparation of catalysts containing 2.6–12.4 wt % B 2 O 3 by modifying γ-alumina with orthoboric acid leads to a 9–60 m 2 /g de…
Neste trabalho, o comportamento reológico de sistemas pécticos formulados com as pectinas extraídas das polpas de morango, amora-preta e framboesa foi investigado através de testes reológicos oscilatórios. Adicionalmente, as propriedades químicas dessas pectinas foram estudadas. Os sistemas pécticos das polpas de frut…
Superconductivity in the layered yttrium diboride dicarbide, YB 2 C 2 , has been revisited by means of specific heat, magnetic susceptibility and resistivity measurements down to 50 mK revealing a bulk superconducting transition at 1.0 K. Analysing the low temperature specific heat we obtain a Sommerfeld coefficient o…
Abstract In this paper, a novel scheme is presented to simultaneously compensate the inherent creep and hysteresis nonlinearities of a piezoelectric actuator while positioning the Atomic Force Microscope (AFM) tip. In order to mitigate these nonlinearities, creep and hysteresis phenomenon are first modeled separately…
Moisture damage is a primary mode of distress occurring in hot mix asphalt (HMA) pavements. Usually, the acid aggregate like gneiss must use some anti-stripping additive to resist water damage. Hydrated lime is best known as an anti-stripping additive since 1910. The purpose of this paper is to look at some aspects of…
The species of Linaria have been used as tonic, antiscorbutic, laxative, antidiabetic, and diuretic, as well as for the treatment of wounds, hemorrhoid and vascular disorders in Turkey. The anti-inflammatory and analgesic effects of different extracts from Linaria grandiflora Desf., L. genistifolia subsp. confertiflor…
The thermal expansion of CD4 solutions in the orientational glass C60 with molar concentration of deuteromethane 20 and 50% has been investigated in the temperature range 2.5–23K. The orientational glass CD4–C60 undergoes a first-order phase transition in the temperature interval 4.5–55K. This transition is manifested…
The FRI model of crack growth, which incorporates mechanical properties into the slip oxidation mechanism of crack advance, is an extension of the well-known Ford-Andresen model. When the exponent of the oxidation current decay curve is set close to 1, however, the FRI model gives an infinite crack growth rate. Here,…
We present a three-dimensional study of the torque transmitted between tile permanent magnets uniformly magnetized. All this study is based on the Coulombian model. The torque is calculated semianalytically by considering all the surface densities that appear on the tiles. In addition, no simplifying assumptions are d…
Abstract Self-assembled polysaccharide nanogels with negative or positive charges were used as templates for mineralization of calcium phosphate for potential biomedical application. The formation of stable and negatively- or positively-charged amorphous calcium phosphate nanoparticles was confirmed by transmission el…
Abstract A three‐dimensional mathematical model has been developed to simulate turbulent fluid flow, heat transfer and solidification in the pool of a twin‐roll strip caster. A Darcy‐porosity approach was used to study the fluid flow within the mushy solidification zone in the pool. The effect of the heat transfer coe…
This paper reports that amorphous magnetic microwires (Fe 79 Si 16 B 5 ) have been fabricated by a melt-extraction technique and have been annealed at 600°C and 750°C respectively. Differential scanning calorimeter measurements show that nanocrystalline magnetic phase (α-Fe) has been formed in the amorphous matrix whe…
Rare-earth tritelluride CeTe 3 , which belongs to the family of quasi-two dimensional compounds R Te 3 (where R = Y, La-Sm, Gd-Tm), has highly two-dimensional crystal structure. Fermi surfaces consist of inner and outer square sheets, large regions of which are nested by a single incommensurate wave-vector. Because of…
High‐pressure and high‐temperature behavior of synthetic Ni2P has been studied in a laser‐heated diamond anvil cell up to 50 GPa and 2200 K. Incongruent melting associated with formation of pyrite‐type NiP2 and amorphous Ni‐P alloy was found at an intermediate pressure range, between 6.5 and 40 GPa. Above 40 GPa, Ni2P…
By the results of experimental measurements of the Lamb wave’s amplitude at the fundamental frequency and its second and third harmonics, the spatial distributions of the quadratic and cubic nonlinear acoustic parameters in a thin circular plate of D16 polycrystalline aluminum alloy with defects were calculated. The c…
. In the present study, a method is presented combining surface nanocrystalline treatment (SMAT) and the co-rolling process. The aim of this duplex treatment is the development of a 316L stainless steel semi-massive multilayered bulk structure with improved yield and ultimate tensile strengths, while conserving an acc…
Abstract A method was developed for determination of Cu(II) ions quantitatively by measuring fluorescent intensity of pheophytin‐a (Pheoa) solution. The Pheoa was obtained by de‐intercalation of magnesium from the porphyrin ring of chlorophyll‐a (Chla) extracted from fresh spinach leaves. Its two UV‐Vis absorption pea…