Results 41 to 50 of about 5,175 (154)

Mössbauer, XRD and TEM Study on the Intercalation and the Release of Drugs in/from Layered Double Hydroxides

open access: yesCroatica Chemica Acta, 2015
Layered double hydroxides (LDHs) are one of the very important nano-carriers for drug delivery, due to their many advantageous features, such as the ease and low-cost of preparation, low cytotoxicity, good biocompatibility, protection for the ...
E. Kuzmann   +9 more
doaj   +1 more source

Formation of Cobalt Ferrites Investigated by Transmission and Emission Mössbauer Spectroscopy

open access: yesActa Chimica Slovenica, 2020
This study focuses on cobalt and iron ordering within a ferrite structure CoxFe3-xO4, formed during a solid-state reaction of α-Fe2O3 and CoCl2. A unique combination of transmission and emission Mössbauer spectroscopy was employed to inspect selectively ...
Vit Prochazka   +4 more
doaj   +1 more source

Mössbauer spectroscopy study of 60P2O5-40Fe2O3 glass crystallization

open access: yesNukleonika, 2015
60P2O5-40Fe2O3 glass was synthesized and 57Fe Mössbauer spectroscopy study was presented. The main goal of the research was to investigate structural changes of local environment of iron ions during gradual crystallization of the glass.
Stoch Paweł, Stoch Agata
doaj   +1 more source

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

open access: yesChemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source

Magnetic properties of biofunctionalized iron oxide nanoparticles as magnetic resonance imaging contrast agents

open access: yesBeilstein Journal of Nanotechnology, 2019
Background: One of the future applications of magnetic nanoparticles is the development of new iron-oxide-based magnetic resonance imaging (MRI) negative contrast agents, which are intended to improve the results of diagnostics and complement existing Gd-
Natalia E. Gervits   +10 more
doaj   +1 more source

Characterization of an ASTM A335 P91 ferritic-martensitic steel after continuous cooling cycles at moderate rates

open access: yesJournal of Materials Research and Technology, 2019
In this contribution some aspects of the behavior of the ASTM A335 P91 (9Cr1MoVNbN) steel subjected to continuous cooling cycles under fixed austenitization conditions are studied.
Denise Alejandra Carrizo   +4 more
doaj   +1 more source

Experimental methods in chemical engineering: Magnetometry

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Magnetometry is a non‐invasive technique to characterize the behaviour of magnetic materials of which the most common contain Fe, Co, and Ni. Vibrating sample magnetometers (VSMs) vibrate samples at a fixed frequency in a static, homogeneous magnetic field to induce a voltage in pick up coils according to Faraday's law of induction.
Michael Claeys   +3 more
wiley   +1 more source

Ferryl and Ferrate Species: Mössbauer Spectroscopy Investigation

open access: yesCroatica Chemica Acta, 2015
High-valent iron species of oxidation states +4, +5, and +6, have been involved as intermediates in enzymatic reactions, in green organic synthesis, and in purification and disinfection of water.
Virender K. Sharma, Radek Zboril
doaj   +1 more source

A Self‐Enhanced Tandem Catalytic System for Olefin‐to‐Diol Conversion Powered by Single‐Atom Fe Catalysts With In Situ Generated Acid

open access: yesEcoEnergy, EarlyView.
A single‐atom iron catalyst with well‐defined Fe–N4 sites enables a tandem epoxidation‐hydrolysis process for converting terminal olefins to 1,2‐diols. The in situ‐generated isobutyric acid drives the hydrolysis step, affording broad substrate scope and excellent recyclability.
Tao‐Tao Liu   +7 more
wiley   +1 more source

STUDY OF RAPID COOLED ALLOY STRUCTURE Fe61Co10Hf2.5Zr2.5Ti2W2BB 20 [PDF]

open access: yesEuropean Journal of Materials Science and Engineering, 2017
The paper presents the results of the study on the structure of the rapid cooled alloy for which an amorphous structure was obtained. The alloy to be tested is based on iron. Pre-treatment of the sample was carried out by the arcing of melt components in
Marcin NABIAŁEK, Bartłomiej JEŻ,
doaj  

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