Results 21 to 30 of about 378,762 (347)

Effect of particle size on the surface properties and morphology of ground flax [PDF]

open access: yes, 2013
Flax fibers were ground with a ball-mill and four fractions with different size ranges were collected by sieving. These were tested for water sorption, degree of polymerization (DP), copper number, hydroxyl number and analyzed by X-ray diffraction (XRD),
Bandi, Éva   +5 more
core   +1 more source

Study on Mineralogical Characteristics of Peru Copper-Sulphur Ore Dressing Process by X-ray Diffraction and Scanning Electron Microscope

open access: yesYankuang ceshi, 2019
BACKGROUND The main recovered minerals of copper sulfur ores in Peru were copper minerals and sulfur minerals. Due to the complexity of the embedded copper minerals, the superfine granularity of copper minerals and their close relationship with various ...
ZENG Guang-sheng, OU Le-ming
doaj   +1 more source

Copper Oxide Nanoparticles: Synthesis, Characterization, Antimicrobial Activities and Catalytic Reduction of Methylene Blue

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2020
In recent years, metal nanoparticles have been applied in many areas due to their attractive properties. Copper oxide nanaoparticles in particular have drawn much attention owing to their electrical, catalytic, optical, antibacterial and antifungal ...
Selda DOĞAN ÇALHAN, Mustafa GÜNDOĞAN
doaj   +1 more source

Development of an analytical model for copper heap leaching from secondary sulfides in chloride media in an industrial environment [PDF]

open access: yesHemijska Industrija, 2022
In multivariate analysis, a predictive model is a mathematical/statistical model that relates a set of independent variables to dependent or response variable(s). This work presents a descriptive model that explains copper recovery from secondary sulfide
Saldaña Manuel   +4 more
doaj   +1 more source

Production of nanoscale copper compounds and evaluation of their qualitative and dimensional composition [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2018
In this work, nanoscale copper compounds were obtained by thermal decomposition of copper capronate. Selected modes of pyrolysis of organic salt. Particle diameter calculations based on X-ray fluorescence analysis and sedimentation analysis are presented.
Zadoshenko E.G., Ozerov S.V.
doaj   +1 more source

Ultrasonic preparation, stability and thermal conductivity of a capped copper - methanol nanofluid [PDF]

open access: yes, 2019
This paper describes a two-step method to prepare novel copper-methanol nanofluids capped with a short chain molecule, (3-Aminopropyl)trimethoxysilane (APTMS).
Emekwuru, Nwabueze   +3 more
core   +1 more source

Synthesis and Antimicrobial Activity of Chitosan Nanoparticles Incorporating Copper Ions

open access: yesChemical Engineering Transactions, 2023
Chitosan nanoparticles are a naturally derived substance with exceptional physicochemical properties and non-toxic bioactivity, making them suitable for extensive applications.
Thang X. Nguyen   +5 more
doaj   +1 more source

Calculation of the positron bound state with the copper atom [PDF]

open access: yes, 1999
A new relativistic method for calculation of positron binding to atoms is presented. The method combines a configuration interaction treatment of the valence electron and the positron with a many-body perturbation theory description of their interaction ...
C. Harabati   +35 more
core   +2 more sources

A facile biosynthesis of copper nanoparticles: A micro-structural and antibacterial activity investigation

open access: yesJournal of Saudi Chemical Society, 2017
Nanostructured copper particles are synthesized by Garcinia mangostana leaf extract as reducing agent with copper nitrate. X-ray diffraction study confirms the formation of nanocrystalline cubic phase of copper nanoparticles.
Y.T. Prabhu   +3 more
doaj   +1 more source

Effect of particle size on mechanical and anisotropic thermal conductivity of copper-reduced graphene oxide composites

open access: yesResults in Physics, 2019
Copper-reduced graphene oxide composites having good anisotropic thermal conductivity and hardness values fabricated via flake powder metallurgy route. SEM was performed to examine the microstructure of powders and also different composites.
Faisal Nazeer   +6 more
doaj   +1 more source

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