نتایج جستجو برای ' ultra '

Feasibility and challenges of drinking water Photocatalytic Denitrification Embedded Layer on Ultra-High Performance Concrete Denitrification of water has been studied over three decades now and many research subject are currently active in this area. Removing nitrates by minimum cost and eco-impact is the main goal of environmental scientists. Using photocatalysts for denitrification is not a new subject but it has still so many unsolved puzzles inside. In this study, the use of two different ...

Removal of heavy metals in wastewater by using Zeolite nanoparticles In this study, the adsorption and the filtration processes were coupled by a zeolite nanoparticle impregnated polysulfone (PSf) membrane which was used to remove the lead and the nickel cations from synthetically prepared solutions. The results obtained from X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis indicated that the synthesized zeolite nanoparticles, using the conv...

In this study, the effect of elevated temperatures on chemical composition and mechanical properties of mortars with nano silica was investigated. Mortars with 0.5, 1, 1.5 and 2% nano silica as cement replacement were prepared and then exposed to 200°C, 400°C, 600°C, 800°C and 1000°C. Residual compressive strength, mass loss and ultrasonic pulse velocity of samples were also obtained. Along with the loss of residual compressive strength, the ultrasonic pulse velocity of morta...

High-intensity focused ultrasound, is a new, advanced treatment option for select patients with brain cancer. This non-invasive procedure uses sound waves, instead of surgery or radiation, to image and destroy brain tumor. In This article the Numerical Modelling of High intensity Focused Ultrasound Induced Heating in Brain Tissue Phantom has been presented. The current model is inspired by the experiments to measure focused ultrasound induced heating in a brain tissue phantom. The simulation res...

Endotracheal stenting is a common treatment for tracheal disorders as stenosis, cronic cough or dispnoea episodes. However, medical treatment and surgery are still challenging due to the difficulties in overcoming potential prosthesis complications. In this work we analyze the response of the tracheal wall during breathing and coughing conditions under different stent implantations. A finite element model of a human trachea was developed and used to analyze tracheal deformability after prosthesi...

This study was conducted for in vitro evaluation of Zataria multiflora Boiss. (Z. multiflora) extract as a functional feed additive for poultry production. For this reason, the phytochemicals, antioxidant and antibacterial activity of the extract was characterized. The ultrasound-assisted extract from Z. multiflora leaves was analyzed using High-performance liquid chromatography to determine the composition of phenolic and flavonoid compounds. The antioxidant activity were evaluated using DPPH, ...

In this study, artificial neural network (ANN) and genetic algorithm (GA) were applied to find the optimal practical conditions, i.e., adsorbent dosage, sonication time, MB concentration, AO concentration, Er concentration as input parameters and % removal Methylene Blue (MB) as output parameters. To enhance the adsorption of MB dye from ternary aqueous solutions including Auramine-O (AO), Erythrosine (Er) and MB were quickly carried out onto the copper-doped zinc sulfide nanoparticles loaded on...

In this paper, artificial neural network (ANN) and genetic algorithm (GA) were applied to observe the optimal practical conditions, i.e., adsorbent dosage, sonication time, MB concentration, Auramine-O (AO) concentrations, Er concentration as input parameters and % removal AO as output parameters. To enhance the adsorption of AO dye from ternary aqueous solutions containing AO, Erythrosine (Er) and Methylene Blue (MB) were rapidly performed onto the copper-doped zinc sulfide nanoparticles loaded...

Ultrathin graphitic carbon nitride (g-C3N4) nanosheets, due to their interesting two-dimensional graphenelike structure and unique physicochemical properties, have attracted great research attention recently. Here, we develop a new approach to prepare ultrathin g-C3N4 nanosheets by sonication-exfoliation of bulk g-C3N4. Calcium is an essential macronutrient required for healthy human life. It is abundantly present in water. Efficiency of ultrathin graphitic carbon nitride nanosheet in removal of...