Results 11 to 20 of about 58,637 (232)

Synthesis of 1-(2-Hydroxyphenyl) Dec-2-en-1-One Oxime and Its Flotation and Adsorption Behavior for Malachite

open access: yesFrontiers in Chemistry, 2020
A novel collector of 1-(2-hydroxyphenyl) dec-2-en-1-one oxime (HPDO) was synthesized from 2-hydroxy acetophenone and octanal, and its flotation and adsorption behavior for malachite were studied by flotation tests and x-ray photoelectron spectroscopy ...
Liqing Li, Lin Yang, Fangxu Li
doaj   +1 more source

Anglesite, Cerussite, Gypsum, Langite, Malachite, and Posnjakite: New Occurrences in the Calabria Region (Southern Italy)

open access: yesApplied Sciences, 2023
This study undertook the mineralogical and chemical analysis of anglesite (PbSO4), cerussite (PbCO3), gypsum (CaSO4∙2H2O), langite (Cu4(SO4)(OH)6∙2H2O), malachite (Cu2CO3(OH)2), and posnjakite (Cu4(SO4)(OH)6·H2O) detected for the first time in the ...
Andrea Bloise   +3 more
doaj   +1 more source

Beginning of the metal age in the central Balkans according to the results of the archeometallurgy [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2009
The gradual development of the primary copper metallurgy in Balkans starts with production of small jewelry pieces and ends with the serial production of massive tools and weapons. It is confirmed that this metallurgy depended on the contemporary mining,
Jovanović B.
doaj   +1 more source

Thermal Stability of Azurite and Malachite in Relation to the Formation of Mediaeval Glass and Glazes [PDF]

open access: yes, 2002
Azurite and malachite have been extensively used as pigments in ancient and medieval manuscripts, glasses and glazes. The thermal stability of naturally occurring azurite and malachite was determined using a combination of controlled rate thermal ...
Ding, Zhe   +3 more
core   +2 more sources

Investigation of the use of ammonium acetate as an alternative lixiviant in the leaching of malachite ore [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2013
The solutions containing ammonia allow for selective leaching of the copper from a copper ore. In this study, the leaching and kinetics of malachite ore were examined using ammonium acetate solutions as an alternative lixiviant.
Künkül Asım   +2 more
doaj   +1 more source

Ultratrace determination of phosphorus in ultrapurified water by a slope comparison method [PDF]

open access: yes, 2003
The analytical method for the determination of phosphorus in ultrapurified water was developed. Ultrapurified water was evaporated to concentrate phosphorus and the final sample volume for analysis was 10 ml.
Akhmad Sabarudin   +15 more
core   +1 more source

A holistic multimodal approach to the non-invasive analysis of watercolour paintings [PDF]

open access: yes, 2015
A holistic approach using non-invasive multimodal imaging and spectroscopic techniques to study the materials (pigments, drawing materials and paper) and painting techniques of watercolour paintings is presented.
Bailey, K   +6 more
core   +2 more sources

Mechanism and Kinetics of Malachite Dissolution in an NH4OH System

open access: yesMetals, 2020
Copper oxide minerals composed of carbonates consume high quantities of leaching reagent. The present research proposes an alternative procedure for malachite leaching (Cu2CO3(OH)2) through the use of only compound, ammonium hydroxide (NH4OH ...
Alvaro Aracena   +2 more
doaj   +1 more source

Pigment analysis by Raman microscopy and portable X-ray fluorescence (pXRF) of thirteenth to fourteenth century illuminations and cuttings from Bologna [PDF]

open access: yes, 2016
Non-destructive pigment analysis by Raman microscopy (RM) and portable X-ray fluorescence (pXRF) has been carried out on some Bolognese illuminations and cuttings chosen to represent the beginnings, evolution and height of Bolognese illuminated ...
Chaplin, Tracey D.   +3 more
core   +1 more source

Allosteric regulation of small-molecule binding by aptimers [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
Modular aptameric sensors for oligonucleotides were constructed by combiningmolecular beacon stem-loops andmalachite green aptamers. These sensorswere designed so that oligonucleotides complementary to the stem-loop region accomplish the release of ...
Stojanović Milan N.
doaj   +1 more source

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