Materials Literature
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Skin and leather characteristics of hair-type goats were studied in relation to their sex and age, using 100 randomly-selected skin from goats reared in east west Iran. Mean weights of skin and leather were 859.2±35.2 and 357.4±16.2 g, and the length and width of leather ranged from 60 to 121 and 41 to 87 cm, respecti…
In this paper, using first-principles calculations the electronic and magnetic structure of trans- and cis-polyacetylene based magnetic tunnel junctions is investigated. Energy minimization calculations are performed to obtain the equilibrium bonding length at the metal/polymer interfaces. Magnetic proximity-induced s…
Algumas das irradiações a que o homem é submetido podem ser modeladas por um fantoma de voxels acoplado a um código Monte Carlo (MC) que simule o transporte da radiação pelos órgãos e tecidos do fantoma, a interação desta com os átomos constituintes do meio e a avaliação da energia depositada em regiões de interesse.…
Suspended micro-beams made from aligned carbon nanotubes and parylene deflect reversibly in an ac field and the deflection rate is three orders of magnitude greater than those for existing devices. The direction of beam deflection is determined by the area moment of inertia and the actuation mechanism involves rapid a…
The Sentinel 2 mission shall ensure the continuity and enhancement of Landsat and SPOT data and sustain operational land services in the frame of the Global Monitoring for Environment and Security (GMES) initiative. Sentinel-2 is designed to image the Earth’s landmasses from its orbit for at least 7.25 years. The Mult…
We theoretically investigate charge order and nonlinear conduction in the quasi-two-dimensional organic conductor β-(meso-DMBEDT-TTF)2PF6 (DMBEDT-TTF=dimethylbis(ethylenedithio)tetrathiafulvalene). Within the Hartree-Fock approximation, we study the effects of structural distortion on the experimentally observed check…
Microtubules (MTs) are cytoskeletal protein polymers orchestrating a host of important cellular functions including, but not limited to, cell support, cell division, cell motility and cell transport. We construct a toy-model of the MT lattice composed of classical vector Ising spins (dipole moments) representing the t…
The article describes the defects of airfoil shroud platforms of the high pressure turbine of an NK-36ST engine for ground application and shows corrective actions for defect elimination. The structure of a light airfoil shroud platform that can increase the blade lifetime is introduced.
This contribution proposes an identification technique of the parameters which are needed to minimizing power consumption of a City-Bus Equipped with Permanent Magnet Three-Phase Synchronous Motors. A constrained optimization problem is formulated and its solution is approximated by exploiting local flatness and physi…
The lifetime of the transformers is largely affected by overheating of windings and then the insulation ages and it reduces its electrical insulating properties. Therefore, the proper placing of the relevant parts of the transformer can help to ensure more uniform distribution of temperature field and thus to increase…
Pauline L. Waalewijn‐Kool, Maria Diez Ortiz, Nico M. van Straalen and Cornelis A.M. van Gestel Department of Ecological Science, VU University, Amsterdam, The Netherlands SCOPE Zinc oxide nanoparticles (ZnO‐NP) are used in sunscreens with the potential of being released in the environment. This research focuses on how…
Nonlinear rheological properties of polyolefins have long been studied and predicted by using the Larson model with the damping function generally obtained from the stress relaxation measurements. In this study, we investigate the nonlinear rheological properties of high density polyethylene (HDPE) and polypropylene (…
Abstract Optical properties of ZnO films and nanorods (NRs) grown by atmospheric‐pressure CVD (AP‐CVD) and chemical bath deposition (CBD) were studied by photoluminescence (PL), photoluminescence excitation (PLE) and photoacoustic (PA) measurements. Visible emissions from the samples were classified into three groups;…
The standard procedure for wavelength calibration of monochromators in the visible and near infrared wavelength range uses low-pressure gas discharge lamps with spectrally well-known emission lines as primary wavelength standard. The calibration of a monochromator in the wavelength range of 350 to 2500 nm usually take…
\n In this paper, we present our recent research development on single fs laser beam induced periodic structures, i.e. nanovoid array, tilted grating structures, nanograting etc, and discuss the mechanisms and promising applications of the observed periodic structures.\n
Multiwall carbon nanotubes (MWCNTs) are one type of nanoparticles that have various special properties and potential applications. Due to their increasing production and potential toxicological effects, the environmental behavior and transport of MWCNTs have become important research topics. Particle size is one of th…
The high-pressure compression behaviour of the nanomaterials 3C-SiC, Zr0.1Ti0.9O2, CuO, AlN, TiO2 (anatase), TiO2 (rutile), α-Fe2O3, γ-Fe2O3, ɛ-Fe and Rb3C60 was studied in two theoretical equation of state (EOS) models. In the first model, we considered the pressure to be quadratic in terms of relative volume change,…
In this paper, we have investigated the critical behaviour of the thermo-physical properties in weakly compressible fluid mixtures in complete scaling framework. Refractive index is formulated by resorting the Maxwell’s relation between refractive index and dielectric constant. Furthermore, we have considered the crit…
ABSTRACT In this study, we aimed to develop new biocompatible membranes on the basis of chitosan (CHIT) and fish scale powder (ESC) from the species Leporinus elongatus. The possibility of using the uncrosslinked membrane (ESC/CHIT) and membrane crosslinked with sodium tetraborate (ESC/CHIT‐B) for tetracycline release…
Coupling between director reorientation and flow appearing in nematic layers during arising and decay of electric field-induced deformations, known as backflow, was analysed numerically. Nematics possessing flexoelectric properties, in which the converse flexoelectric effect occurred, were considered. The velocity of…