Materials Literature
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The present work covers the processing route and investigation of PP-MWCNT nanocomposite foams. CO 2 is used as a blowing agent in a batch foaming process with a saturation pressure range of 3-7 MPa. Carbon nanotubes act as nucleating agents during the foaming process, which is supported by SEM image analysis and DSC…
The effect of quantum dot shape on the hole energy spectrum and optical properties caused by the interlevel charge transition based on the 4 4 Hamiltonian has been studied for the GaAs quantum dot in the AlAs semiconductor matrix. Calculations have been carried out in perturbation theory taking into account the hybrid…
This paper describes the process of drying of thermoplastic composites warp knows polyamide 6, an engineering polymer material. The results of absorption measurements of pure and polyamide 6 reinforced with cut glass fiber. Composite for injection molding processing conditioned in conditions similar to those prevailin…
OBJECTIVE: With the advent of highly active anti-retroviral therapy, HIV disease has become a chronic condition, but with a number of metabolic complications including insulin resistance and diabetes mellitus, dyslipidemia and hypertension and an increased incidence of atherosclerosis. The aim of the current study was…
In our work, it was demonstrated that it is possible to reinforce bio-based polymers with natural resource based basalt fibres to produce polymer composites suitable for engineering applications.
Directional guiding, passing or stopping of elastic waves through engineered materials have many applications to the engineering fields. Recently, such engineered composite materials received great attention by the broader research community. In elastic waves, the longitudinal and transverse motion of material particl…
In order to find an appropriate absorber material for the top cell of a crystalline all-silicon tandem solar cell we investigate silicon nanocrystals (Si NCs) surrounded by a silicon carbide matrix. The films are produced by plasma enhanced chemical vapour deposition of amorphous Si-rich SiC with 67% of Si from the pr…
INTRODUCTION: Antimicrobial properties of silver nanoparticles (SNP's) have been recentl well evaluated, and now are being considered as excellent candidates for therapeutic purposes. It is confirmed, that various solutions of colloidal SNP's possess significant antibacterial properties against such species as: Staphy…
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The physical properties of the tissues are weakened after decellularization, and the exposed collagen fibers are prone to thrombogenesis. Several studies have proven that the use of carbodiimide (EDC) as a cross-linking agent can improve the properties of decellularized xenogeneic scaffold materials. We adopted EDC fo…
In this study, the corrosion behavior of Mg-Zn-Se and Mg-Zn-Cu alloys was investigated to evaluate their corrosion behavior related to use as implantable biomaterials. The corrosion behavior of these alloys and a commercially available Mg-Zn alloy were examined using static solution electrochemical testing, dynamic so…
In this paper n-type polycrystalline silicon thin films deposited on ITO coated polyethylene terephthalate (PET) substrate by screen printing technique have been studied. The phosphoric acid with different concentration used as doping source to create n-type silicon powder which is dissolved in solvent to obtain n- ty…
The studies on the combustion and flame retardant mechanisms are most important for the developments of the flame retardant materials. In this paper, the author would like to introduce the basics and the recent trends of studies in flame retardant mechanisms to develop the flame retardant polymeric materials.
The present work has been conducted in order to determine the influence of heat treatment on the wear and corrosion behaviours of a gray cast iron substrate coated with a Ni base coating deposited by HVOF thermal spray. The wear resistance of the coatings was obtained using a reciprocating wear tester by rubbing a 10…
macromolecular solutions under Poiseuille flow in microchannels are investigated using the dissipative particle dynamics (DPD) approach. The results show that the macromolecular solutions are non-Newtonian fluids which can be described by power-law fluids, and the power-law index decreases with the increase of the mac…
Until recently the magnetomechanical behavior has been rather poorly understood with contradictory results and interpretations from different investigators in the study of stress monitoring by magnetic method. Based on the domain motion and field-induced magnetization process of magnetic material, the stress-induced m…
Ngwo White clay from Udi in Enugu State of Nigeria was analyzed mineralogically and physic–chemically. The results of the chemical analysis are as follows: SiO2:53.2%, Al203:5.906%, K2O:0.121%, Na2O:1.4175%, Fe2O3:0.444%, CaO: 0.0061%, PdO: 0.0049%. The results of the physical analysis are as follows: 8%moisture, 1%As…
A method for analyzing the surface of rounded mineral crystals has been developed. The morphology of Ural-Brazilian type diamonds from different deposits of Yakutia, Urals and Brazil has been studied. Signs of curvilinear forms of diamond dissolution, including forms of reversible dissolution and irreversible etching,…
Composite structures built of paraaramid fabric and shear thickening fluid (STF) are developed in the light of their po� tential application in smart body armour. The study reports on the rheological behaviour of nanosized silica suspensions. Depending on the oligomer chemical structure and molecular weight, we observ…
The evolution of the microstructure of hexanitrohexaazaisowurtzitane (CL-20) after a thermal stimulus plays a key role in the performance of CL-20. In the current work, microstructural variations of CL-20 caused by thermal treatment were investigated by X-ray diffraction, in situ variable-temperature optical microscop…