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The exploration of eastern Mediterranean deep hypersaline anoxic basins with MODUS: a significant example of technology spin-off from the Geostar Program
deep-sea anoxic basins ROV
2015/9/7
A significant example of technological spin-off from the GEOSTAR project is represented by the special-purpose instrumented module, based on the deep-sea ROV MODUS, which was developed in the framewor...
Effects of Clay Fraction and Temperature on the H2O Self-Diffusivity in Hectorite Gel: A Pulsed-Field-Gradient Spin-Echo Nuclear Magnetic Resonance Study
Complexity of Pore Structure Hectorite H2O NMR Self-Diffusion
2011/12/6
Abstract: Self-diffusion coefficients of H2O molecules in Na-rich hectorite gel were measured by 1H nuclear magnetic resonance (NMR). Spin-echo pulse sequences with magnetic field gradient pulses for ...
Mobility of Small Molecules in Interlayers of Hectorite Gels: ESR Study with an Uncharged Spin Probe
ESR Hectorite Molecular mobility
2011/12/29
Electron spin resonance (ESR) spectroscopy was used to measure the rotational mobility of an uncharged nitroxide spin probe (4-hydroxy-2,2,6,6-tetramethyl-piperidinyloxy) in hectorite gels of variable...
Cation Migration in Smectite Minerals: Electron Spin Resonance of Exchanged Fe3+ Probes
Electron spin resonance Hofmann-Klemen effect Ion migration Iron Laponite Montmorillonite Mossbauer spectroscopy
2012/1/5
The migration of interlayer Fe3+ cations into the structure of heated montmorillonite and Laponite has been studied by electron spin resonance (ESR), M鰏sbauer spectroscopy, and magnetic susceptibility...
Effect of Adsorbed Iron on Thermoluminescence and Electron Spin Resonance Spectra of Ca-Fe-Exchanged Montmorillonite
Electron spin resonance Iron Montmorillonite Surface adsorption Thermoluminescence
2012/1/13
The electron spin resonance (ESR) spectra and the natural and gamma-induced thermoluminescence (TL) glow curves of a series of variably cation-exchanged Fe-Ca-clays prepared from SWy-1 montmorillonite...
Chemisorption of Copper on Hydroxy-Aluminum-Hectorite: An Electron Spin Resonance Study
Adsorption Aluminum Copper Electron spin resonance Hectorite Hydroxy-aluminum complex
2012/2/6
Copper adsorption on a hydroxy-aluminum-hectorite complex (OH-Al-hectorite) at pH 4.5, 5.7, 7.4, and 7.8 was examined by means of electron spin resonance. The spectra of these samples were compared to...
Hydration State of Cu2+ in Mixed Cu2+-Hexadecylpyridinium Montmorillonite by Electron Spin Resonance
Cation exchange Copper Electron spin resonance Hexadecylpyridinium Hydration Montmorillonite
2012/2/6
Electron spin resonance (ESR) spectra of Cu2+-hexadecylpyridinium (HDP) montmorillonites were investigated as a function of HDP+ content and the hydration state of Cu2+ at relative humidities of p/p0 ...
Organic Anion Adsorption on Aluminum Hydroxides: Spin Probe Studies
Adsorption Aluminum hydroxide Boehmite Carboxylate Electron spin resonance Gibbsite Organophosphate
2012/2/8
The nature of organo-phosphate and carboxylate bonding in aqueous suspensions of noncrystalline alumina, boehmite, and gibbsite has been studied using the anionic nitroxide spin probes 3-carboxy-2,2,5...
Cationic Spin Probes on Hectorite Surfaces: Demixing and Mobility as a Function of Adsorption Level
Adsorption Cation Spin Probe ESR Hectorite Organic Cation TEMPAMINE+
2012/2/9
The electron spin resonance (ESR) technique has been used to study the motion and segregation of an organic spin probe cation (4-amino-2,2,6,6-tetramethylpiperidine N-oxide) on K+-hectorite as a funct...
Electron Spin Resonance Studies of Iron Oxides Associated with the Surface of Kaolins
Goethite Hematite Iron Kaolin Lepidocrocite
2012/2/10
The different types of iron oxide phases associated with the surfaces of two suites of kaolins from Georgia, U.S.A., and from the Southwest Peninsula of England, have been identified using electron sp...