نتایج جستجو برای: metal exchange

تعداد نتایج: 382180  

2016
Haron Abdel-Raziq Sayeef Salahuddin Jeffrey Bokor

A series of measurements were performed in order to analyze the impact of including an additional metal (known to have a Spin Hall effect) directly below another metal with the opposite sign of the effect. Experimental data shows, at first glance, that there is an anomalous enhancement of the spin Hall angle when this extra metal layer is included. The effect was noted by observing the switchin...

Journal: :The Journal of organic chemistry 2001
K C Caster C G Keck R D Walls

This report details the synthesis of several benzonorbornadienes by Diels--Alder cycloaddition of cyclopentadiene derivatives with substituted benzyne intermediates, which were generated by low-temperature metal--halogen exchange of halobenzenes. General conditions were developed, allowing synthesis of most benzonorbornadienes described herein at the multigram scale with isolated yields approac...

Journal: :iranian journal of science and technology (sciences) 2004
t. eslamzadeh

the removal of copper (ii), zinc (ii), and chromium (iii) from wastewater by carrot residues(cr) was investigated to evaluate cation exchange capacity. the effects of solution ph and co- ions werestudied in batch experiments. adsorption equilibria were initially rapidly established, and then decreasedmarkedly after 10 min. column experiments were carried out in a glass column filled with cr toe...

2016
Dominik Kriegner Mykhailo Sytnyk Heiko Groiss Maksym Yarema Wolfgang Grafeneder Peter Walter Ann-Christin Dippel Matthias Meffert Dagmar Gerthsen Julian Stangl Wolfgang Heiss

While galvanic exchange is commonly applied to metallic nanoparticles, recently its applicability was expanded to metal-oxides. Here the galvanic exchange is studied in metal/metal-oxide core/shell nanocrystals. In particular Sn/SnO2 is treated by Ag+, Pt2+, Pt4+, and Pd2+. The conversion dynamics is monitored by in situ synchrotron X-ray diffraction. The Ag+ treatment converts the Sn cores to ...

Journal: :iranian journal of pharmaceutical sciences 0
seyed reza ghaffarian polymer engineering faculty, amirkabir university of technology, tehran, iran homayoun moaddel department of materials science and engineering, university of california,los angeles, ca, usa fatemeh s. majedi biomedical engineering faculty, amirkabir university of technology, tehran, iran young researcher club, islamic azad university, south tehran branch, tehran, iran mohammad mahdi hasani-sadrabadi polymer engineering faculty, amirkabir university of technology, tehran, iran biomedical engineering faculty, amirkabir university of technology, tehran, iran young researcher club, islamic azad university, south tehran branch, tehran, iran

the muscle-like technology would be of enormous advantages for biomedical applications such as medical implants and human assist devices. ionic polymer metal composites (ipmcs) are one kind of biomimetic actuators. an ionic polymer metal composite composed from an ionomer with high ion exchange capacity that packed between two thin metal layers. in the present study we focused on the preparatio...

2016
C. Winter A. Seubert

The determination of metal complex species in aqueous solutions by using chromatographic techniques is potentially affected or even impossible due to species decomposition during the separation. An often used technique for slower exchanging metal ions is ion exchange chromatography (IC), which is used for the separation and quantification of 1-1-complexes of trivalent metal ions. The test set c...

2014
Concha Tojo Nuria Vila-Romeu

Computer calculations were carried out to determine the reaction rates and the mean structure of bimetallic nanoparticles prepared via a microemulsion route. The rates of reaction of each metal were calculated for a particular microemulsion composition (fixed intermicellar exchange rate) and varying reduction rate ratios between both metal and metal salt concentration inside the micelles. Model...

Journal: :The Biochemical journal 1986
J M Buccigross C L O'Donnell D J Nelson

A flow-dialysis apparatus suitable for the study of high-affinity metal-binding proteins has been utilized to study calmodulin-metal exchange as a measure of relative calmodulin-metal association constants. Calmodulin labelled with radioactive 153Gd was dialysed against buffer containing various competing metal ions. The rate of label exchange was monitored by a gamma-ray scintillation detector...

2014
Amritpal Singh Subhadra Gupta Majd Kuteifan Marko Lubarda Vitaliy Lomakin Oleg Mryasov

Articles you may be interested in Interlayer exchange coupled composite free layer for CoFeB/MgO based perpendicular magnetic tunnel junctions J. Thermal stability and spin-transfer switchings in MgO-based magnetic tunnel junctions with ferromagnetically and antiferromagnetically coupled synthetic free layers Appl. Effect of interlayer coupling in CoFeB/Ta/NiFe free layers on the critical switc...

2013
Han-Chun Wu Oleg N. Mryasov Mohamed Abid Kevin Radican Igor V. Shvets

Charge-orbital ordering is commonly present in complex transition metal oxides and offers interesting opportunities for novel electronic devices. In this work, we demonstrate for the first time that the magnetization states of the spin valve can be directly manipulated by charge-orbital ordering. We investigate the interlayer exchange coupling (IEC) between two epitaxial magnetite layers separa...

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