Materials Literature
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The effect of replacing B2O3 with Er2O3 on the thermal properties and crystallization behaviour of B2O3−ZnO glasses were investigated by Differential Thermal Analysis (DTA) and X-ray Diffraction Analysis (XRD) measurements. DTA measurements reveal that the temperature of vitreous transition and the glass stability inc…
Using the single roller melt-spinning technique, thin Ti 50 Ni 25 Cu 25 alloy ribbons (at. %) in the amorphous-crystalline state (thickness of 30÷50 micron and width from 1 to 2 mm) were produced. The study of the obtained samples using the scanning electronic microscopy and the X-ray diffraction phase analysis showed…
The present study shows the concise morphological description of Skeletonema grevillei Sarno & Zingone in the Sibenik Bay on the eastern coast of the Adriatic Sea. Increased abundance of the species was observed during January 2016. The scanning electron microscope (SEM) was used to detect the ultrastructural morpholo…
The noble metals (Pt, Pd, Rh) supported on Cu-Ce mixed oxides with γ-Al2O3 washcoat/FeCrAl substrate were investigated as catalytic performance of Three Way Catalysts (TWC) under simulated automotive exhaust feed gas. The structural, morphological features and catalytic activity were observed by X-ray diffractometry (…
The primary aim of this work was clearly to apply the norms of radiation protection to building residents against natural radioactivity. This was done through measurement of natural radioactivity in adhesive building materials using HPGe gamma ray spectrometer. The radium equivalent activity (Raeq), indoor gamma absor…
A series of single-phased Li2BaSiO4:Ce3+, Eu2+, Sm3+ phosphors were synthesized, investigated the luminescent properties and discussed the energy transfer process. These results indicated that this phosphor has a potential application for ultraviolet white light-emitting diodes.
Tuberculosis (TB) is a highly infectious respiratory disease contracted through the inhalation of Mycobacterium tuberculosis. Serine hydrolases are abundant in M. tuberculosis and serve as a model for studying the inhibition of TB. Rv0045c is an example of such with little known regarding its biological function. Rv00…
This study investigates the effects of fibers in steel fiber reinforced concrete (SFRC) on its mechanical properties and failure processes under different loading rates using LS-DYNA. A single fiber pullout test is simulated first to validate the material models and parameters used in the numerical simulations. After…
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CONTEXT: A novel root-filling material based on the incorporation of ultrafine alkaline bioactive glass particles (bioactive gutta-percha, [BGP]) was developed to work without sealer. AIM: biological response to this material by assessing its cytocompatibility. MATERIALS AND METHODS: Prototypes of BGP were compared to…
Thermodynamic modeling of process of metal desulphurization with boron-containing slags of the СаО – SiO2 – MgO – Al2 O3 – B2 O3 system was carried out using HSC 6.1 Chemistry (Outokumpu) software. Influence of process temperature (1500-1700 °С), basicity of slag (2 – 5) and content of В2 О3 (1 – 4 %) on desulphurizat…
The system described in this work is a variant from traditional acoustic levitation first described by, Marzo et al [1]. It uses multiple transducers eliminating the requirement for a mirror surface, allowing for an open geometry as the sound from multiple transducers combines to generate the acoustic trap which is co…
Plant extracts are an efficient, eco-friendly and cost-effective alternative source for the synthesis of nanoparticles. In this study, silver nanoparticles (AgNPs) were synthesized by treating the Caesalpinia pulcherrima (C. pulcherrima) leaf extract with aqueous solution of silver nitrate at room temperature. The bio…
The article presents the results of theoretical research, which was conducted in the framework of finding solutions task analytical diagnosis of the errors of geometry of the freewheel mechanisms. The solution to this problem enhancing the accuracy and reliability of the assessment of the clutches and provides the inc…
Excited state plays an important role in photoluminescence (PL) and electroluminescence (EL) properties of organic light-emitting materials. Charge-transfer (CT) state is beneficial to harvest triplet exciton utilization in fluorescent organic light-emitting diodes (FOLEDs) by efficient reverse intersystem crossing. H…
Quantitative mechanical analyses by nano indentation were performed for two types of ferritic heat-resisting steel that contained 12mass% chromium and 2mass% tungsten (12Cr-2W). One of the 12Cr-2W with a superior creep-fatigue property showed transgranular fractures, whereas the other steel with an inferior creep-fati…
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Metal-ceramic materials are characterized by high mechanical and tribological properties. The surface treatment of the composite by an electron beam in inert gas plasma leads to a qualitative and quantitative change in its microstructure as well as to a change in mechanical properties of the components: a columnar str…
Design and fabrication of the scaffold is an important part of the tissue engineering process. Nanofibrous scaffolds based on proteins are gaining increasing acceptance due to its structural similarity to the extracellular matrix. Making use of the electrospinning technique, rat tail collagen type I nanofibers were pr…
The deposition of nanostructured Zr-Y-O/Si-Al-N-based coatings was implemented by the pulse magnetron methods. The structural-phase state of the nanostructured coatings was studied with TEM and X-ray analysis. The phase transformation in Zr-Y-O layer was observed with the X-ray diffraction analysis in the “in-situ” mo…