Materials Literature
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Objectives: Digoxin is a drug with very low aqueous solubility, low therapeutic dose and low therapeutic index. Soft gelatin capsule is an ideal dosage form to formulate low soluble drugs that provides faster dissolution, higher bioavailability and higher content uniformity. The purpose of the present study is to enha…
Composite panels made by hand lay-up technique from randomly oriented coconut palm frond fibers reinforced polyester matrix were investigated. The results show that the highest values of 10.26MPa and 78.98MPa for respective tensile and flexural strength properties were observed at 10% fibre content by weight in the co…
The structure and properties of Al–Fe–Cu and Al–Fe–Cu–Sc quasicrystal alloys have been investigated applying the methods of metallography, X-Ray analysis, transmission and focused-beam electron microscopy, differential thermal analysis (DTA), and electrical resistivity method. The cast and ion-plasmous sprayed alloys…
New manganese compounds [Mn(HphpzMe)(2)(H(2)phpzMe)(HCO(2))] (1), [Mn(2)(phpzMe)(2)(HphpzMe)(2)(OCH(3))]·2CH(3)OH (2), Na{[Mn(HphpzPh)(phpzPh)(MeOH)(2)](2)}(HCO(2)) (3), [Mn(HphpzPh)(2)(EtOH)(2)]ClO(4)·2EtOH (4) and [Mn(HphpzPh)(2)N(3)] (5) were synthesized and characterized with various techniques. 1, 4 and 5 are mon…
Polyelectrolyte (PEL) mediated synthesis of functional inorganic nano-materials is attractive due to its versatility and compatibility inside aqueous media. Block copolymers are often employed to facilitate the formation of novel nanostructures. In this work, we report the synthesis of copper oxide (CuOx) crystals wit…
Roads in the Arab world face so many problems, especially at the surface of the pavement due to the variations in the weather conditions (high and low temperatures) and the design methods of the hot asphalt mixes. Therefore, we need to avoid any defect in the asphalt pavement surface such as fatigue and thermal cracki…
The present paper deals with constitutive modeling of the compressive stress-strain behavior of selected polymers at strain rates from 10−3 to 103/s using a modified Ramberg-Osgood equation. High strain-rate compressive stress-strain curves for four different commercially available extruded polymers are determined on…
The magnetic properties of a new family of single-molecule magnet Ni(3)Mn(2) complexes were studied using theoretical methods based on Density Functional Theory (DFT). The first part of this study is devoted to analysing the exchange coupling constants, focusing on the intramolecular as well as the intermolecular inte…
The partial reduction of TiO2 was investigated by hydrogen plasma treatment and it was performed to examine the oxygen adsorption property of partially reduced TiO2 (TiO2-x). In this experiment, TiO2-x was analyzed by X-ray diffraction (XRD) and oxygen adsorption of partially reduced TiO2 was measured by gas chromatog…
Electrochemical Properties of Composite (Sm0.5Sr0.5)(Co0.8M0.2)O3−δ (M=Cu, Mn) Cathodes for Intermediate Temperature Solid Oxide Fuel Cells, Fu, Yen-Pei, Li, Chien-Hung, Ouyang, Jie, Hu, Shao-Hua, Tay, Kok-Wan
Influence of Compound Deoxidation of Steel with Al, Zr, Rare Earth Metals, and Ti on Properties of Heavy Castings Heavy steel castings deoxidized with aluminium are sometimes brittle intercrystalline failed during their service along primary grain boundaries what is initiated by aluminium nitrides and so called concho…
Semiconductor nanoparticles exhibit exciting size-tunable optical, magnetic, chemical and electronic properties with practical applications in a wide spectrum of fields including catalysis, photonics, photovoltaics, electronics, biological imaging and data storage. Colloidal approaches provide quantum dots of excellen…
Nitrogen doping effect on increasing bandgap and enhancing red-to-near infrared (NIR) emissions has been evaluated by thermoreflectance (TR) and photoluminescence (PL) measurements for β-Ga 2 O 3 thin-film nanowires. The incorporation of nitrogen dopant decreases unit-cell size and increases direct bandgap of ∼57 meV…
The magnetoconductance of graphene nanoribbons with rough zigzag and armchair edges is studied by numerical simulations. Nanoribbons with sufficiently small bulk disorder show a pronounced magnetoconductance minimum at cyclotron radii close to the ribbon width, in close analogy to the wire peak observed in conventiona…
New textile technologies based on lamination and thermoplastic film or volumetric textile architecture creation enable to achieve many desirable effects providing necessary bal-listic protection along with a considerable improvement in wearing comfort. In this study a prototype active ventilation system of a 3D textil…
Multiwalled carbon nanotubes display dielectric properties similar to those of graphite, which can be calculated using the well known Drude-Lorentz model. However, most computational softwares lack the capacity to directly incorporate this model into the simulations. We present the finite element modeling of optical p…
Novel soluble polyimides having long-chain alkyl groups on their side chain were synthesized via polymer reaction with the polyimides having phenolic OH groups and 3,4,5-tris(dodecyloxy)benzoic acid (12GA) using N,N′-dicyclohexylcarbodiimide (DCC) as a dehydration reagent. The polyimides having phenolic OH groups were…
The crystal structure, the solid NMR spectroscopy and the complex impedance study have been carried out on [C2H10N2]CdCl2(SCN)2. Characterization by single crystal X-ray crystallography shows that the cadmium atoms have à 2N2S2Cl hexa-coordination sphere, exhibiting pseudo-octahedral geometry. The cadmium atoms are br…
In this paper, we report on multiphysics full-wave techniques in the frequency (energy)-domain and the time-domain, aimed at the investigation of the combined electromagnetic-coherent transport problem in carbon based on nano-structured materials and devices, e.g., graphene nanoribbons. The frequency-domain approach i…
Coaxial multi-layered structure is obtained when the Fe melt confined in the single-walled carbon nanotube (SWCNT) undergoes a rapid cooling. Owing to the inductive effect of the SWCNT, precursors of the long-range order (LRO) are generated in the confined Fe melt and finally been converted into local crystalline stru…