Materials Literature
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Molecular taxonomic studies were conducted in 8 isolates of freshwater filamentous heterocystous Anabaena spp. Those were morphologically discriminated two groups, each containing five Anabaena species based on the proximity of the akinetes to heterocyst, adjacent to or away from the spore in the trichome. Genetic div…
During operation, ceramic outdoor high voltage insulators may severe a certain degree of pollution which may reduce their performances. Under these conditions a large leakage current (LC) may flow on the surface and degradation may take place. The LC waveforms are normally non-pure sinusoidal. This paper explains the…
A shell like structure is sought as a solution of a free boundary problem derived from the Ohta-Kawasaki theory of diblock copolymers. The boundary of the shell satisfies an equation that involves its mean curvature and the location of the entire shell. A variant of Lyapunov-Schmidt reduction process is performed that…
The aim of the presented work was the removal of phenol from water using a reactor with photoactive refill. Titanium dioxide (Chemical Factory “Police” Poland) was immobilized on the base material as a thin layer from the alcoholic suspension followed by thermal stabilization. The glass fabric was applied as a support…
Six new poly (amide-imide)s (6a-f) were prepared under microwave irradiation by polycondensation reaction of diacid chloride (4) with 6 different derivatives of hydantoins (5a-f) using O-cresol as a microwave absorbent. These new PAIs were obtained in high yield and with inherent viscosities between 0.15 and 0.25 dL/g…
In situ investigation of displaced chain walls in 80 at% Ni Permalloy under applied in-plane magnetic field has been carried out by out-of-focus methods of Lorentz electron microscopy. The magnetic flux in the plane of the film is schematically illustrated. The in-plane magnetic field applied to the foil is produced b…
Purpose: of this paper is to extend a complex evaluation of aluminium alloy, which requires very often knowledge of behaviour of deformation at the ECAP process and achieved strengthening, intensity of deformation and very fine structure. These factors have influence on the mechanical properties and formability. Prese…
Water management in proton exchange membrane fuel cells (PEMFCs) is critical in efficient operation of fuel cells during normal operation as well as purge and start-up conditions. Insufficient membrane hydration impedes the flow of protons and an overabundance of water obstructs the flow of reactants in the gas diffus…
Abstract. The electrical conductivity (σ) and Hall coefficient (RH) of single crystals prepared by a special modified Bridgman technique have been investigated over the temperature range 245-495 K. Our investigation showed that our samples are p-type conducting. The dependence of the Hall mobility on temperature was p…
Growth factors like bone morphogenetic protein 2 (BMP-2) and vascular endothelial growth factor (VEGF) play an important role in bone remodeling and fracture repair. Therefore, with respect to tissue engineering, an artificial graft should have no negative impact on the expression of these factors. In this context, th…
Totally 68 species of phytoplankton were recorded during the present study period from both the stations which includes 50 species belongs to diatoms (Bacillariophyceae), 17 species of dinoflagellates (Dinophyceae) and only one Blue green (Cyanophyce). During the present study diatoms contribute maximum percentage (77…
Strong visible green upconversion emission in nanocrys- talline BaZrO3:Yb 3+ powder, obtained by a hydrothermal process at 100 - C, is reported. The unconverted emission has a quadratic depen- dence on the pump intensity with a lifetime around half that of the NIR lifetime. Results suggest cooperative upconversion as…
Design and relay-based control of a novel linear magnetostrictive motor is presented in this paper. The magnetostrictive material used here is Terfenol-D, an alloy of the formula Tb0.3Dy0.7Fe1.9. In response to a traveling magnetic field inside the Terfenol-D element, it moves in the opposite direction with a peristal…
Composite materials consisting of peanut hulls and polylactic acid (PLA) resin were developed by a compression molding method. The density, water absorption properties and flexural properties of the composite materials were evaluated. The density of the composite materials was lower than the theoretical density, which…
Active electromagnetic (EM) armor is a new type of active defense system, which can intercept invading objects effectively. When hit by interception projectiles, the invading object will deviate from its trajectory or be destroyed totally. A steerable EM launcher system using two separate pancake coils is introduced i…
The Sarıçimen Fe-Ni laterite ore is located 15 km east of Çaldıran County, northeast of Lake Van. This area is situated in the eastern Anatolia accretionary complex of Turkey, close to the Iran boundary. It is the first transported Fe-Ni rich laterite to be described from this area. This paper concentrates on the mine…
On the basis of elaborating the traditional tension control, a new software design in which digital motol control and digital display used is offered. Simple and effective practical yarn tension controlling system of MCU design is adopted in its hardware. It, meantime, discussed the tension transmission system, specif…
The prediction of a protein three-dimensional (3D) structure is one of the most important challenges in computational structural biology. We have developed an automatic protein 3D structure prediction method called FAMSD. FAMSD is based on a comparative modeling method which consists of the following four steps: (1) g…
A commercial K10-montmorillonite was used as support for the immobilization of a cationic manganese(III)-salen complex. The catalytic behavior of the resulting material was tested in the enantioselective epoxidation of three different alkenes, viz.: styrene, α-methylstyrene and 6-cyano-2,2-dimethylchromene, at 0 ºC, u…
Non-stoichiometric boron carbide was successfully synthesized through a chemical synthetic route by using tribromide and carbon tetrachloride as reactants and metal sodium as co-reductant at 700 °C. The synthesized sample was characterized by X-ray powder diffraction, transmission selected area electron diffraction, e…