Results 11 to 20 of about 209,980 (188)

Mycosynthesis of Silver Nanoparticles by Candida albicans Yeast and its Biological Applications [PDF]

open access: yesArchives of Razi Institute, 2021
This study conducted a mycosynthesis of silver nanoparticles (AgNPs) by Candida albicans supernatant. The mycosynthesized AgNPs were identified by color visualization, ultraviolet-visible (UV) spectroscopy device, X-ray diffraction (XRD), energy ...
R. A Hikmet, N. N Hussein
doaj   +1 more source

Facile and eco-friendly route for green synthesis of magnesium ferrite nano particles [PDF]

open access: yesScience of Sintering, 2020
Magnesium ferrite (MgFe2O4) nano-particles were synthesized by using both the ceramic method and egg white assisted green synthesis method. The ceramic method carried out at different temperatures while the combustion method achieved at 300 oC ...
Deraz N.M.
doaj   +1 more source

Microstructure and phase composition of the Ag–Al film wear track: through-thickness characterization by advanced electron microscopy [PDF]

open access: yesArchives of Metallurgy and Materials, 2019
Analytical transmission electron microscopy has been applied to characterize the microstructure, phase and chemical composition of the Ag–Al wear track throughout its thickness down to the atomic level. Microscopy findings have been correlated with Ag–Al
O. Kryshtal   +5 more
doaj   +1 more source

Effect of sintering duration on structure and properties of Ni-Al metal-intermetallic composites produced by SPS

open access: yesChimica Techno Acta, 2023
The fabrication of Ni-Al based metal-intermetallic layered (MIL) composites is one of the actively developing directions in the production of materials for aircraft and space industries.
Tatiana Ogneva   +5 more
doaj   +1 more source

Lemon Juice and Microwave Assisted Modification of Potato Peel Husk for Lead Biosorption: Batch and Column Studies

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2020
The removal of heavy metals from water is very difficult. For this reason different methods have been employed so far among which biosorption is the cheapest and ecofriendly way to treat and remove heavy metals from aqueous media.
Tahira Moeen Khan   +4 more
doaj   +1 more source

Pedagogic Orientations of MOOC Platforms: Influence on Course Delivery [PDF]

open access: yesAAOU Journal, 2015
This paper reports on an exploratorystudy of the influence of the pedagogic orientations of MOOC platforms on their courses. Four MOOC platforms — namely Coursera, edX, FutureLearn and OpenLearning — which illustrate their pedagogy on their websites were
Billy Tak Ming Wong
doaj   +1 more source

Synthesis of Hydroxyapatite Nanostructures Using Chemical Method

open access: yesNano Biomedicine and Engineering, 2021
In this research, hydroxyapatite was prepared from natural and industrial sources using a simple chemical method. The fish (scales and bones), snail shells, bovine bones, horse bones, egg shells, cuttlefish bones and crab shells are composed by crystals ...
Marwa Abdul Muhsien Hassan   +2 more
doaj   +1 more source

N-Oleoyl Sarcosine as an Engine Oil Friction Modifier, Part 1: Tribological Performance of NOS+ZDDP Mixture at 100°C

open access: yesTribology Online, 2022
The friction coefficient when a Fe surface was lubricated with an additive mixture of N-Oleoyl sarcosine (NOS), a commercial organic friction modifier, and zinc dialkyldithiophosphate (ZDDP) was measured at 100°C using a ball-on-disk tribometer under ...
Weiqi Shen   +7 more
doaj   +1 more source

Influence of gadolinium doping on structural properties of carbon nanotubes

open access: yesФізика і хімія твердого тіла, 2023
The paper presents an analysis of SEM, EDX, Raman scattering, and FTIR of Gadolinium-doped multi-walled carbon nanotubes obtained by hydrothermal method. The morphological characteristics of the materials were studied and their compositions were analyzed.
R.G. Abaszade   +7 more
doaj   +1 more source

Laser cleaning of the archaeological metal sample from the Danube

open access: yesZaštita Materijala, 2018
The paper presents the results of laser cleaning of corrosive and other deposits on a metal archaeological artefact from the Danube. Nd: YAG laser, energy up to 750 mJ and wavelengths λ = 1064 nm and 532 nm is used.
Suzana Polić   +4 more
doaj   +1 more source

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