Materials Literature
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The distribution characteristics of the neutron field in cement was simulated using the MCNP code to comply with the requirements of an online Prompt Gamma Neutron Activation Analysis system.Simulation results showed that the neutron relative flux proportion reduced with increasing cement thickness.When the cement thi…
A series of transition metal complexes have been synthesized from the new Schiff base-azo ligand (H2L) derived from 4-(2-Amino-4-hydroxy-phenylazo)-1,5-dimethyl-2-phenyl-1,2-dihydro-pyrazol-5-one and o-phenylene diamine. The structural features have been confirmed from their elemental analyses, metal content, magnetic…
Direct electron-transfer and electrocatalytic kinetics of covalently attached myoglobin (MB) films on magnetic nanoparticles (MB-MNP(covalent)), in comparison to the corresponding physisorbed films and individual components, are reported for the first time. MB-MNP(covalent) ("-" denotes a covalent linkage) was adsorbe…
The possibility of using a nonfluorinated proton exchange membrane for H 2 /CO 2 separation in an electrochemical hydrogen pump has been evaluated for the purpose of reducing cost. A sulfonated poly(ether ether ketone) (SPEEK)/cross-linked poly(styrene sulfonic acid) (CrPSSA) semi-interpenetrating polymer network memb…
Solubility data were measured for omeprazole sulfide in ethanol, 95 mass-% ethanol, ethyl acetate, isopropanol, methanol, acetone, n -butanol and n -propanol in the temperature range from 280.35 to 319.65 K by employing the gravimetric method. The solubilities increase with temperature and they are in good agreement w…
Melt grown ZnO single crystal was irradiated with varying fluence of 2 MeV proton beam in the range of 1 × 1016 H +/cm2 to 5 × 1017 H +/cm2. The irradiated spots exhibited varying degree of discoloration due to the irradiation indicating surface and volume defects. The surface roughness of the irradiated spots was mea…
An approach to the synthesis of gold nanoparticles–graphene (AuNPs–GOSH) hybrids via the AuS bond between the sulfhydryl-functionalized graphene oxide (GOSH) and gold nanoparticles (AuNPs) has been proposed. In this approach, the sulfhydryl groups highly dispersed on the GOSH nanosheets are used to assemble gold nanop…
This work is concerned with transverse vibrations of axially traveling nanobeams including strain gradient and thermal effects. The strain gradient elasticity theory and the temperature field are taken into consideration. A new higher-order differential equation of motion is derived from the variational principle and…
In this paper, unified nonlocal shear deformation theory is proposed to study bending, buckling and free vibration of nanobeams. This theory is based on the assumption that the in-plane and transverse displacements consist of bending and shear components in which the bending components do not contribute toward shear f…
Composites play significant role as engineering material and their use has been increasing day by day due to their specific properties such as high strength to weight ratios, high modulus to weight ratio, corrosion resistance, and wear resistance. In present work, an attempt is made to hybridize the material using syn…
The dynamics of polymers adsorbed to a solid surface are important in thin-film formation, adhesion phenomena, and biosensing applications, but they are still poorly understood. Here we present tracking data that follow the dynamics of isolated poly(ethylene glycol) chains adsorbed at a hydrophobic solid-liquid interf…
Stimulus-responsive shape memory materials have attracted tremendous research interests recently, with much effort focused on improving their mechanical actuation. Driven by the needs of nanoelectromechnical devices, materials with large mechanical strain particularly at nanoscale are therefore desired. Here we report…
We have studied experimentally the responses of high quality single crystals of stoichiometric synthetic magnetite to applied weak dc and ac magnetic fields in the range of 6 K to 60 K, far below the Verwey transition. The results can be compared to so called Magnetic After Effects (MAE) measurements, which are the mo…
New Mexico has been known for a number of years as one of the world's premier locations for spangolite. This rare and beautiful, hydrated, copper aluminum sulfate, is known primarily as microcrystals. Highly acclaimed are noteworthy specimens from the Blanchard and Mex-Tex mines in the Hansonburg mining district near…
The p-π conjugated nature of tetra(naphthalene-dione)porphyrins and tetra(naphthalene-dithione)porphyrins is clarified by DFT studies by Dongdong Qi and Jianzhuang Jiang on page 2605. The conjugated model changes from the uniform benzene-type form to the butadiene-type with a strong–weak alternating π bonding nature,…
At the workshop Fast Methods for Long Range Interactions in Complex Particle Systems organized by CECAM at the research centre Juelich, Germany, I participated in a poster session. I also gave a short talk about my research.
The ovoid piece of gold foil has is inscribed with a raised stylized vine pattern. There are small holes at the narrow ends of the foil. The edges have begun to deteriorate.
1Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran2Cardiovascular Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, IR Iran3Department of Medical Sciences, Mashhad Branch, Islamic Azad University, Mashhad, IR Iran
In this paper, we consider particular tiling problems suitable for able high-school students. Three alternative student-generated proofs of the solution to the initial problem are given in detail, and various points in connection with these proofs are briefly discussed.
A method to measure the viscosity of liquids at microscales is presented. It uses a thin glass fiber fixed on the tip of the cantilever of an extremely low noise Atomic Force Microscope (AFM), which accurately measures the cantilever {deflection}. When the fiber is dipped into the liquid the dissipation of the cantile…