Results 51 to 60 of about 1,613,911 (283)

TEKNIK VOLTAMETRI PELUCUTAN ANODIK GELOMBANG PERSEGI UNTUK PENENTUAN KADAR LOGAM Cu DALAM KANGKUNG AIR

open access: yesJurnal Kimia Riset, 2016
ABSTRAK   Analisis logam berat Cu(II) dilakukan dengan metode voltametri pelucutan anodik gelombang persegi. Penelitian ini bertujuan untuk mengetahui validitas metode voltametri pelucutan anodik yang digunakan dalam pengukuran kadar logam Cu(II) dalam
Irdhawati Irdhawati   +2 more
doaj   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

The Properties of Cu Ions in Zeolites CuY Studied by IR Spectroscopy

open access: yesMolecules, 2021
The properties of both Cu2+ and Cu+ ions in zeolite CuY were followed with NO and CO as probe molecules. Cu2+ was found to be located in SII, SII*, and SIII sites, whereas Cu+ was found in SII and SII* sites.
Jerzy Podobiński   +6 more
doaj   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

open access: yesAdvanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

open access: yesAdvanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti   +5 more
wiley   +1 more source

Characterization by epr spectroscopy of the chiral catalysts bis(oxazoline)-Cu supported in laponites

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2000
An Electron Paramagnetic Resonance study of a chiral Bis(oxazoline)-Cu(II) supported in laponite (synthetic hectorite) is presented. It is concluded that the complex is incorporated into the interllamellar space of the clay giving out isolated Cu(II ...
Alonso, P. J.   +6 more
doaj  

Preparation and Antimicrobial Screeningof Cu (II), Ni (II), Zn (II) Cd (II) Complexes

open access: yesE-Journal of Chemistry, 2006
The metal complexes of Ni(II), Cu(II), Zn(II) Cd(II) with organic ligands viz Hydrazine hydrate, 1,2-N,N'-Bisammonium thiocarbamoyl ethane and 1,4-N,N'-Bisammonium thiocarbamoyl benzene have been prepared.
R. M. Desai, M. K. Shah, V. H. Shah
doaj   +1 more source

Correlation between UV-VIS spectra and the structure of Cu(II) complexes with hydrogenated dextran in alkaline solutions [PDF]

open access: yesHemijska Industrija, 2005
UV-VIS spectrophotometric investigations of Cu(II) complexes with hydroge-nated dextran showed that the complexation of Cu(II)-ions began at pH > 7. The formation of Cu(II) complexes with dextran monomer units was observed at pH 7-12.
Nikolić Goran S.   +4 more
doaj   +1 more source

Two hydroxy pyridinecarboxylic acid derivatives as a possible chelating agents in neurodegenerative disease; equilibrium complexation studies with Cu(II), Zn(II). [PDF]

open access: yes, 2014
The metal ion chelators 4-hydroxy-5-methyl-3-pyridinecarboxylic acid (DQ5) and 1,5-dimethyl-4-hydroxy-3-pyridinecarboxylic acid (DQ715) and Cu(II) and Zn(II) were investigated with the aim to restore the homeostasis of the brain Cu(II) and Zn(II) in ...
Dean, Annalisa   +7 more
core  

Valorization of keratin biofibers for removing heavy metals from aqueous solutions [PDF]

open access: yes, 2018
Four common waste keratin biofibers (human hair, dog hair, chicken feathers, and degreased wool) have been used as biosorbents for the removal of heavy metal ions from aqueous solutions. Different parameters of the biosorption processes were optimized in
Carrillo Navarrete, Fernando   +3 more
core   +2 more sources

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