In this paper, the Al2O3-water nanofluid flow in laminar and turbulent flows inside tubes fitted with diamond-shaped turbulators is numerically modeled. The nanofluid flow is modeled by employing a two-phase mixture method and applying the constant heat flux boundary condition at tube walls. In the results, the effects of different parameters such as the geometry of turbulators, volume fraction...

in the present study, we have reported the biological synthesis of silver nanoparticles (agnps) using aqueous leaf extract prepared by hot percolation treatment of wheat varities (pbw343, triticum durum and aegilops tauschii )for the reduction of silver ions to silver nanoparticles. bioreduction of ag+ to ag0 was observed when aqueous extract augmented with silver nitrate (agno3) was incubated ...

nano structured materials have wide range of applications due to their interesting size-dependent chemical and physical properties compared to particles of size in the range of micrometer. copper oxide nano materials are of interest on account of their potential uses in many technological fields. in this study  cuo nanoparticles were synthesized via simple sol gel method using basic cuso4 as we...

silver nanoparticles with size of 6- 57nm were synthesized by bioreduction method from anisochilus carnosus aqueous and ethanolic extract. biosynthesized nanoparticles showed maximum antimicrobial activity against k. pneumonia (13±1.67mm), e.coli (13±1.97mm) and b. subtilis (13±1.07mm) followed by p. aeruginosa and minimum against s. aureus. the quantitative formation, characteristics and impur...

the silver nanoparticles are well-known for their antimicrobial, anti-inflammatory wound healing abilities. we synthesized silver nanoparticles using chemical reduction method and the formation of the silver nanoparticles was characterized by uv-vis absorption spectroscopy, ft-ir and sem techniques. the minimum inhibitory concentration of the synthesized nanoparticles was determined for both gr...

objective(s): biological applications of gold nanoparticles have limitations because of the toxic chemicals used in their synthesis. curcumin can be used as reducing as well as capping agent in synthesis of gnps to eliminate the cytotoxicity. conjugation of curcumin to gold also helps in increasing its solubility and bioavailability. materials and methods: here we report synthesis of gold nanop...

The study aims at synthesizing silver nanoparticles using leaf extract of Cymbopogon citratus along with the evaluation of its antioxidant, free radicals scavenging, and reducing power properties. Biosynthesized silver nanoparticles were characterized X-Ray diffractometry, Scanning Electron Microscopy, Transmission Electron Microscopy, Fourier Transform Infrared spectroscopy and Energy Dispersi...

in the present work, the electrooxidation of formic acid and formaldehyde; potentially important fuels for future fuel cells, was investigated on the fe3o4@pt core-shell nanoparticles/carbon-ceramic electrode (fe3o4@pt/cce). the fe3o4@pt nanoparticles were prepared via a simple and fast chemical method and their surface morphology, nanostructure properties, chemical composition, crystal phase, ...