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Showing 1 to 20 of 47 for “"copper ions"”.
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Lanthanide metal-organic framework for ratiometric detection and adsorption of copper ions in water
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2023-08-01
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The reaction between ferrocytochrome c and hydrogen peroxide
… in fitting a suitable reaction mechanism. Copper ions have been found to catalyse reactions similar to that studied here. The effect of a copper histidine complex was therefore investigated on the reaction at pH 8.7. The copper complex was found to catalyse the oxidation of ferrocytochrome …
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Geležies dalelių sintezė vandens ir alyvos terpėse ir jų taikymas tribosistemose /
… is objected with the preparation of oil suspensions with magnetic nanoparticles and investigation of tribological properties of produced suspensions. The preparation of rapeseed/SAE 10 mineral oil suspensions with Fe particles, produced Fe particles stabilization and size distribution of …
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MPSA Effects on Copper Electrodeposition: Understanding Molecular Behavior at the Electrochemical Interface
… at flat non-specific solid surfaces and copper metal electrodes. <em>Ab initio</em> quantum-mechanical calculations are reported and define the interatomic potentials in the simulations. Some of the quantum-mechanical calculations involve small copper clusters interacting with …
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Fabrication of Core-Shell Nanoparticles
… methacrylate) (PMMA) was developed. The copper shell formation is a self-limiting process. A thin copper shell (0.82 nm) around the cobalt nanoparticle (1.56 nm) enhanced the magnetic property by increasing the blocking temperature from 124 K to 235 K for nanoparticles with a copper …
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Mielių baltymo Sup35 GNNQQNY sekos mutantinių variantų kūrimas ir jų sintezė Saccharomyces cerevisiae ląstelėse /
Prions are proteinaceous particles that are able to replicate and spread as an infection. Prions cause transmissible spongiform encephalopathies (TSEs), a fatal neurodegenerative disease in mammals. Neurodegenerative diseases also include amyloidoses, better known as Alzheimer's, Parkinson's or …
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A biosynthetic approach to understanding the assembly of CuA centers
… biological processes. Metalloproteins containing copper or iron carry out electron transfer throughout all domains of life. CuA is a unique dinuclear, mixed-valence and valence delocalized copper center, which catalyzes remarkably efficient electron transfer under the low driving forces …
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Detecting Copper in Water Using Electrochemiluminescence
The detection of copper ions as Cu(dmp)₂⁺ (dmp=2,9 -dimethyl-1,10-phenanthroline) using electrochemiluminescence (ECL) is reported. Cu(dmp)₂⁺ is formed in situ by reducing Cu₂⁺ ions to Cu⁺ with hydroxylamine hydrochloride and then complexing with the chelating agent dump. ECL was generated by …
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TAILORING SURFACES FOR POTENTIAL INHIBITION OF BACTERIAL TRANSMISSION IN HEALTHCARE SETTINGS
… that contribute to healthcare-associated infections. Such coatings for use in healthcare settings should be durable with minimal cytotoxicity, and transparency would be essential for use with certain devices. In this thesis, surface-immobilized quaternized chitosan (QCS) transparent coating was …
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Copper metallization with an electron cyclotron resonance
… source, used for physical vapor deposition of copper into sub-micron features, was studied to determine whether parameters, such as gas atom density, electron density and temperature, surface bias, and copper ionization fraction at the deposition surface, influenced fill quality of the …
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Development of Amine Containing Polymer Modified MALDI Targets for Complex Peptide and Protein Mixture Fractionation Prior to MALDI Mass Spectrometry Analysis
… is increasingly used in proteomic applications and analysis, this method suffers from loss of performance in the analysis of mixtures, due to the ion suppression effect. In this effect, basic peptides ionize more readily than acidic peptides and there by suppress the ionization and …
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Effects of adding acid plant sulfur on heap leaching
… precious metals from their natural ore deposits. Copper ore deposits are found across the world and heap leaching of copper has been implemented effectively for years. The ore is broken down to copper ions and elemental sulfur in the heap. Acid plants are used in mines to replenish the raffinate …
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The Synthesis and Coordination Chemistry of Two Families of Polydentate Ligands - Exploring Their Potential for the Preparation of Molecule-Based Magnets
… and is comprised of four ligands and eight copper (II) centers. Here, coordination takes place via amide 0 atoms, and pyrazole nitrogens. This complex is the first reported example of an octanuclear copper cluster with a saddle-shaped structure. The second cluster comprises nine copper ions …
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A role for a predicted E. coli inner membrane lipoprotein in cell envelope integrity
… of membrane proteins. Despite this, the functions of several membrane proteins are as yet undefined. Therefore, defining the physiological roles of uncharacterized membrane proteins is expected to provide us with insights into the biology of the Gram-negative cell envelope and to perhaps …
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Predispersed solvent extraction of copper from dilute aqueous solution
… Solvent Extraction (POSE) was used to extract copper ions from dilute acidic aqueous solution. POSE is based on the principle that there is no need to comminute both phases. All that is necessary is to comminute the solvent phase prior to contacting it with the feed. This is done by converting …
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The effect of mass transport on deposit quality in copper electrowinning
<p>"Roughness and nodulation of copper electrodeposits depend strongly on mass transfer conditions of copper ions to the electrode surface. Mass transfer properties in electrowinning electrolytes were first characterized. The effective diffusivity of cupric ion was measured with a rotating disk …
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Diazine-bridged coordination polymers of copper and nickel : synthesis and thermal, spectral, structural, and magnetic properties
A large number of coordination compounds of copper(I), copper (II) and nickel (II) have been prepared and characterized by thermal, spectroscopic and X-ray diffraction methods as well as by elemental analysis and magnetic susceptibility measurements. The neutral ligands used in the study were …
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Two Methodologies in Pursuit of the Elucidation of Copper (II)—Centered Bioinorganic Chemistry
Copper is a widely distributed transition metal in the earth's crust and has been adopted in a variety of biological systems. In many ways the biochemical usefulness of copper stems from its positive redox potential. This positive redox potential allows copper to assist in the movement of …
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Chemical and Mechanical Stability of Copper Carboxylate Metal-Organic Frameworks
… materials, formed by the union of metallic junctions and organic ligands. The wide pores present in such structures provide extremely high specific surface areas, larger than those typically observed in more common porous materials like zeolites or activated carbons. This peculiar property …
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Luminescent Semiconductor Quantum Dots (QDs) and Their Nanoassemblies as Bioprobes
… quantum yield. The application of QDs as ions probes and methods to encapsulate QDs in nanospheres including micelles, glyconanospheres and silica nanospheres and the use of these nanospheres in bioassays are described. CdS QDs capped with different ligands such as thioglycerol, cysteine …
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