Materials Literature
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The investigation of stability of as-made Beta zeolite polymorphs A, B, and C (BEA, BEB, and BEC) was carried out on the basis of lattice energy minimization and molecular dynamic atomistic simulations. The force field employed provided an excellent agreement between calculated and experimental enthalpies of formation…
UNLABELLED: Photodynamic therapy (PDT) is a relatively new therapy that has shown promise for treating various cancers in both preclinical and clinical studies. The present study evaluated the potential use of PET with radiolabeled choline to monitor early tumor response to PDT in animal models. METHODS: Two human pro…
We use laser high-order harmonics and a polarization-ratio-reflectance technique to determine the optical constants of copper and oxidized copper in the wavelength range 10-35 nm. This measurement resolves previously conflicting data sets, where disagreement on optical constants of copper in the extreme ultraviolet mo…
Rice husk ash was used to produce sodium silicate with SiO2/Na2O=3. The investigation of NaOH concentration and temperature on the silica conversion showed that NaOH has positive influence. SiO2/Na2O 3 was produced with 0.8 mol/l of NaOH and 403/453 K. These solutions were used to produce silica sol with diameter of…
We investigate the effects of doping and grading slope on the surface and structure of linearly alloy graded InGaAs buffers. It is found that the Be doping can improve material properties, resulting in smaller surface roughness and a lower threading dislocation density, while the Si doping has an opposite effect. The…
*Corresponding author: Dr. Oladele Samuel Ajayi Department of Physics, Federal University of Technology, P.M.B 704, Akure, Ondo State, Nigeria. E-mail: ajayisam1089@yahoo.com Background: Activity concentrations of 40K, 226Ra and 228Ra were measured in some sachet drinking water samples produced in Nigeria. Materials a…
Insect intestinal mucins (McIIM2-4) expressed in the midgut of feeding, starved and moulting Mamestra configurata larvae were identified. McIIM2 and McIIM4 were associated with the peritrophic matrix (PM). PMs from feeding and starved larvae were translucent and contained organized chitin bundles perpendicular to thei…
We report on the layer-by-layer growth of epitaxial yttrium-iron-garnet (Y3Fe5O12) thin films on (111) and (110) Gd3Ga5O12 substrates as verified by the intensity oscillations of reflection high energy electron diffraction during pulsed laser deposition. X-ray diffraction indicates pseudomorphic lattice structure with…
The Ras family of small GTPases control diverse signaling pathways through a conserved "switch" mechanism, which is turned on by binding of GTP and turned off by GTP hydrolysis to GDP. Full understanding of GTPase switch functions requires reliable, quantitative assays for nucleotide binding and hydrolysis. Fluorescen…
A generalized three-dimensional (3D) vertex dynamics model for simulating grain growth is presented. In this approach, grain boundaries (GB) are triangulated and the microstructural evolution is driven by the minimization of the GB energy. The generalized model includes misorientation and inclination dependent GB ener…
A unique thermodynamic model of Fermi gases suitable for semiconductor device simulation is presented. Like other models, such as drift diffusion and hydrodynamics, it employs moments of the Boltzmann transport equation derived using the Fermi–Dirac distribution function. However, unlike other approaches, it replaces…
The prediction method of service life for bridge structures is played an important role of bridge management system. In this paper, the mathematical modeling was to study the servise life prediction of pier for existing reinforced concrete (RC) bridge exposed to chloride environment. The corrosion process has three st…
Abstract The Velasco orbicular granitoid is a small (65 × 15 m), irregularly-shaped body that crops out within the Huaco granite, central Sierra de Velasco, NW Argentina. It consists of ellipsoid-shaped orbicules of 3 to 15 cm length immersed in an aplitic to pegmatitic matrix. The orbicules are formed by a core made…
The electrochemical reduction of nine quinones has been studied in acetonitrile and, in one case, in dimethyl sulfoxide. Included are seven hydroxyquinones plus 1,4-naphthoquinone, 8, and 9,10-anthraquinone, 9 . Each quinone is reduced in two steps, first to the anion radical and then, at more negative potentials, to…
Pentagonal nanorods (PNRs) and nanoparticles (PNPs) covered by mismatched shell layers are theoretically investigated. Mechanical stresses and elastic energies of such objects are calculated analytically and analyzed in the framework of linear isotropic elasticity. Difference between elastic modules of core and shell…
A comprehensive model for predicting the effective viscosity of dilute suspensions of nanoscale colloidal particles is presented in this work. The physics of complex interparticle interaction mechanisms is considered in details to characterize the rheological features of the suspension (nanofluid), expressed in terms…
The nuclear structure of neutron-rich $N>126$ nuclei has been investigated following their production via relativistic projectile fragmentation of a $E/A=1$ GeV $^{238}\mathrm{U}$ beam. Metastable states in the $N=128$ isotones $^{208}\mathrm{Hg}$ and $^{209}\mathrm{Tl}$ have been identified. Delayed $\ensuremath{\gam…
The reactions of lanthanide nitrates with 5-nitroisophthalic acid (ab. 5-H(2)nip) in DMF and ethanol (1 : 1) mixed solution gave rise to three nanoporous lanthanide polymers, {[Ln(2)(5-nip)(3)(DMF)(4)](DMF)(2)}(n) (Ln = Nd (), Dy (), Ho (), 5-nip = 5-nitroisophthalate). Single-crystal X-ray diffraction analyses reveal…
In this paper, a model for growth and coarsening of precipitates at grain boundaries is developed. The concept takes into account that the evolution of grain boundary precipitates involves fast short-circuit diffusion along grain boundaries as well as slow bulk diffusion of atoms from the grain interior to the grain b…
The recently developed heteronuclear group contribution SAFT-VR equation (GC-SAFT-VR) [ Peng et al. Fluid Phase Equilib. 2009, 227 (2), 131−144] enables the predictive study of the thermodynamic properties of fluids and their mixtures by using a molecular-based model in which the molecules are described by heterosegme…