Results 121 to 130 of about 5,928 (256)

Specific Ion Effects of Chaotropic and Superchaotropic Anions Probed by Raman Hydration‐Shell Spectroscopy

open access: yesAngewandte Chemie, Volume 138, Issue 27, 1 July 2026.
The vibrational frequencies of “dangling” water O─H bonds can be determined by Raman hydration‐ shell spectroscopy and used to differentiate chaotropes from kosmotropes and hydrophobes. Dangling O─H bonds are also detected around superchaotropic anions of the borate cluster type (B12X122−; X = H, F, Cl, Br, and I) but their frequencies do not directly ...
Werner M. Nau   +6 more
wiley   +2 more sources

Experimental Measurement of Methane and Ethane Mole Fractions during Gas Hydrate Formation [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2017
The super-saturation condition has to be provided to form gas hydrates. Consequently, the prediction of the guest molecule fraction in the aqueous phase is crucial in the study of the gas hydrate kinetics.
Reza Razizadeh   +2 more
doaj  

Processos de interacção geosfera/biosfera em sedimentos marinhos do Golfo de Cádiz

open access: yes, 2005
Mestrado em Ciências das Zonas CosteirasO principal objectivo deste estudo foi avaliar o estado de actividade de alguns vulcões de lama do Golfo de Cádiz, especificamente no que diz respeito a um processo biogeoquímico extremamente importante: oxidação
Duarte, Joana Soares de Oliveira
core  

CHECKING THE PRICE TAG ON CATASTROPHE: THE SOCIAL COST OF CARBON UNDER NON-LINEAR CLIMATE RESPONSE [PDF]

open access: yes
Research into the social cost of carbon emissions — the marginal social damage from a ton of emitted carbon — has tended to focus on “best guess” scenarios.
Richard S.J. Tol   +3 more
core  

Methane Hydrates in Nature - Current Knowledge and Challenges

open access: yes, 2015
Recognizing the importance of methane hydrate research and the need for a coordinated effort, the United States Congress enacted the Methane Hydrate Research and Development Act of 2000.
Torres, Marta   +27 more
core   +1 more source

Microbial aspects of anaerobic methane oxidation with sulfate as electron acceptor

open access: yes, 2009
Anaerobic oxidation of methane (AOM) is an important methane sink in the ocean but the microbes responsible for AOM are as yet resilient to cultivation.
Jagersma, C.G.
core  

The microstructure of sediment-hosted hydrates: evidence from effective medium modelling of laboratory and borehole seismic data

open access: yes, 2009
Much of our knowledge of hydrate distribution in the subsurface comes frominterpretations of remote seismic measurements. A key step in such interpretations isan effective medium theory that relates the seismic properties of a given sediment toits ...
Minshull, T.A., Chand, S.
core  

Methane hydrate formation and decomposition

open access: yesElectronic Journal of Differential Equations, 2009
Methane hydrates, in arctic permafrost and deep ocean sediments, store vast amounts of methane, which is the primary constituent of natural gas and a potent greenhouse gas.
Vasilios Alexiades
doaj  

Effect of Humidity on Ionisation and Ion Chemistry in Active‐Capillary Dielectric Barrier Discharge Ionisation

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 18, 30 September 2026.
ABSTRACT Rationale Dielectric barrier discharge ionisation (DBDI) in an active‐capillary configuration (including the commercial SICRIT source) is widely used as a soft, ambient‐pressure ionisation method for vapours and gases, yet the role of water vapour in controlling reagent ion chemistry and analytical behaviour has not been mechanistically ...
Miroslav Polášek   +2 more
wiley   +1 more source

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