Results 21 to 30 of about 996,656 (308)

Preparation and properties of hydrogen peroxide oxidized starch for industrial use [PDF]

open access: yesHemijska Industrija, 2020
Oxidized starch, an additive used in paper manufacturing and products for construction industry, is usually produced using harmful oxidant, such as hypochlorites or periodates.
Karić Nataša   +6 more
doaj   +1 more source

X-ray structures of dinuclear copper(I) and polynuclear copper(II) complexes with the 2,4-bis(cyanamido)cyclobutane-1,3-dione dianion [PDF]

open access: yes, 2006
From the 2,4-bis(cyanamido)cyclobutane-1,3-dione dianion (2,4-NCNsq2−), two copper complexes [Cu2(PPh3)4(PhCN)2(μ-2,4-NCNsq)] · PhCN (1) and [Cu(dien)(μ-2,4-NCNsq) · H2O]n (2) have been synthesized and characterized by IR and electronic absorption ...
Cortadellas, Olivier   +4 more
core   +2 more sources

Liquid-liquid extraction of copper(II), zinc(II), cadmium(II), and lead(II) from aqueous solution and sewage effluent using phenoxy-amino ligands

open access: yesWater Science and Technology, 2022
The phenoxy-amino ligands 2-(((2-(diethylamino)ethyl)amino)methyl)phenol (L1) and 2-(((2-mercaptoethyl)amino)methyl)-phenol (L2) were studied as model chelating agents for liquid-liquid extraction of copper(II), zinc(II), cadmium(II), and lead(II ...
George S. Nyamato   +3 more
doaj   +1 more source

Electrochemical extraction of europium from molten fluoride media [PDF]

open access: yes, 2009
This work concerns the extraction of europium from molten fluoride media. Two electrochemical ways have been examined: (i) the use of a reactive cathode made of copper and (ii) the co-deposition with aluminium on inert electrode, leading to the formation
Cassayre, Laurent   +4 more
core   +3 more sources

Development of flow injection method for indirect copper determination with amperometric detection in drinking water samples [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
A gas-diffusion flow injection method with amperometric detection for indirect copper determination on a silver electrode is developed. The flow through system is equipped with two injection valves and a gas-diffusion unit. In the first step, a signal
Nikolić-Mandić Snežana   +4 more
doaj   +1 more source

High-Potential C112D/M121X (X = M, E, H, L) Pseudomonas aeruginosa Azurins [PDF]

open access: yes, 2009
Site-directed mutagenesis of Pseudomonas aeruginosa azurin C112D at the M121 position has afforded a series of proteins with elevated Cu^(II/I) reduction potentials relative to the CuII aquo ion.
Gray, Harry B.   +4 more
core   +3 more sources

Epr study of some copper(II) mononuclear and copper(II)-copper(II)/ copper(II)nickel(II) binuclear complexes

open access: yes, 1999
Department of Chemistry, A. P. S. University, Rewa-486 003, India Manuscript received 15 September1998, revised .2 February 1999, accepted 11 March 1999 X-Band epr spectra of polycrystalline samples of some copper(II) mononuclear and copper(II)-copper(II)/copper(II)-nickel(II) binuclear complexes using diethylenetriamine and imidazole have been ...
Patel, Ram N.   +2 more
openaire   +1 more source

Synthesis and Characterization of the Ligand Based on Benzimidazole and Its Copper Complex: DNA Binding and Antioxidant Activity

open access: yesBioinorganic Chemistry and Applications, 2011
A new copper(II) complex with formulae of [Cu(buobb)2](pic)2, where buobb stands for the ligand of 1,3-bis(1- butylbenzimidazol-2-yl)-2-oxopropane and pic represents 2,4,6-trinitrophenol, has been synthesized and characterized by elemental analyses ...
Huilu Wu   +5 more
doaj   +1 more source

Copper(II)- and gold(III)-mediated cyclization of a thiourea to a substituted 2-aminobenzothiazole [PDF]

open access: yes, 2017
Benzothiazole derivatives are a class of privileged molecules due to their biological activity and pharmaceutical applications. One route to these molecules is via intramolecular cyclization of thioureas to form substituted 2-aminobenzothiazoles, but ...
Dawe, Louise N.   +2 more
core   +2 more sources

Reversible DNA i-motif to hairpin switching induced by copper(II) cations [PDF]

open access: yes, 2015
i-Motif DNA structures have previously been utilised for many different nanotechnological applications, but all have used changes in pH to fold the DNA.
Alberti   +30 more
core   +1 more source

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