Results 41 to 50 of about 2,388,439 (297)

Dynamics of confined water molecules [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
We present femtosecond midinfrared pump–probe measurements of the molecular motion and energy-transfer dynamics of a water molecule that is enclosed by acetone molecules. These confined water molecules show hydrogen-bond and orientational dynamics that are much slower than in bulk liquid water.
Gilijamse, J.J.   +2 more
openaire   +4 more sources

Molecular Basis of Water Activity in Glycerol–Water Mixtures

open access: yesFrontiers in Chemistry, 2019
Water activity (Aw) is a reliable indication of the microbial growth, enzymatic activity, preservation, and quality of foods. However, a molecular basis of Aw is still under debate in multiple related disciplines.
Hiroshi Nakagawa, Taiji Oyama
doaj   +1 more source

Water at interface with proteins

open access: yes, 2010
Water is essential for the activity of proteins. However, the effect of the properties of water on the behavior of proteins is only partially understood.
Bianco, Valentino   +2 more
core   +1 more source

Sustainable land management by restoration of short water cycles and preventionof irreversible matter losses from topsoils

open access: yesPlant, Soil and Environment, 2009
Sustainable land management requires that water and matter (nutrients and base cations) are efficiently recycled within ecosystems so that irreversible losses of matter from topsoils are minimised. Matter losses are connected to water flow.
W. Ripl, M. Eiseltová
doaj   +1 more source

Water resources management in a homogenizing world: Averting the Growth and Underinvestment trajectory [PDF]

open access: yes, 2014
Biotic homogenization, a de facto symptom of a global biodiversity crisis, underscores the urgency of reforming water resources management to focus on the health and viability of ecosystems.
Hjorth, P   +4 more
core   +1 more source

Application of the hydrochemistry, stable isotopes and MixSIAR model to identify nitrate sources and transformations in surface water and groundwater of an intensive agricultural karst wetland in Guilin, China

open access: yesEcotoxicology and Environmental Safety, 2022
Karst water as the vital water supply source is generally suffered from NO3– contamination in intensive agricultural areas worldwide. Identifying NO3– sources and transformations is the key for understanding nitrogen pathways, and also for effectively ...
Jun Li   +7 more
doaj   +1 more source

Curvature Dependence of Hydrophobic Hydration Dynamics

open access: yes, 2015
We investigate the curvature-dependence of water dynamics in the vicinity of hydrophobic spherical solutes using molecular dynamics simulations. For both, the lateral and perpendicular diffusivity as well as for H-bond kinetics of water in the first ...
Dzubiella, Joachim   +2 more
core   +1 more source

Influences of anthropogenic acids on carbonate weathering and CO2 sink in an agricultural karst wetland (South China)

open access: yesEcological Indicators, 2023
Carbonate minerals are the largest carbon (C) reservoir on earth. Quantitative assessment of carbonate weathering and CO2 sink flux caused by anthropogenic acids in karst wetland regions is imperative to improve understanding of the hydrogeochemical ...
Jun Li   +7 more
doaj   +1 more source

Solvent Induced Proton Hopping at a Water-Oxide Interface [PDF]

open access: yes, 2014
Despite widespread interest, a detailed understanding of the dynamics of proton transfer at interfaces is lacking. Here we use ab initio molecular dynamics to unravel the connection between interfacial water structure and proton transfer for the widely ...
Michaelides, Angelos, Tocci, Gabriele
core   +4 more sources

Water–Peptide Dynamics during Conformational Transitions [PDF]

open access: yesThe Journal of Physical Chemistry Letters, 2013
Transitions between metastable conformations of a dipeptide are investigated using classical molecular dynamics simulation with explicit water molecules. The distribution of the surrounding water at different moments before the transitions and the dynamical correlations of water with the peptide's configurational motions indicate that the water ...
Nerukh, Dmitry, Karabasov, Sergey
openaire   +2 more sources

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