Background Percolating dissolved organic matter (DOM) from the topsoil is considered main source of subsoil carbon (OC) in temperate soils, but knowledge about its influence on OC storage and structure-forming processes limited. Aims We conducted a 30-day incubation experiment with artificial soils to study effects percolating DOM soil texture turnover initial structure formation. Methods Artif...

Hydrous ferric oxides (HFO) are efficient sorbents for inorganic and organic pollutants and therefore have great potentials in environmental science and engineering applications. Freezing and thawing of HFO suspensions leads to the formation of dense HFO aggregates. It facilitates the handling and increases the drying rate of HFO. In this study, we used a combination of pycnometry, gas adsorpti...

The water wire hypothesis of hydrogen-ion transport in lipid bilayers has prompted a search for water aggregates in bulk hydrocarbons. The asymmetric stretching vibration of the water dissolved in n-decane and in a number of other alkanes and alkenes has been observed. The water band in the alkanes is very wide and fits to the results of a J-diffusion calculation for the water rotation. This im...

Dodonaea viscosa is widely cultivated in the karst graben basin and crucial for recovering land after rocky desertification. However, effect of long–time D. afforestation on changes quality soil remains unclear. Soil nutrients aggregate composition can be used to evaluate beneficial effects improving functional stability. In this study, stability were investigated using cropland, 10–year, 20–ye...

We demonstrate the first successful application of infrared laser spectrometry to the accurate, simultaneous determination of the relative H/H, O/O, and O/O isotope abundance ratios in natural water. The method uses a narrow line width color center laser to record the direct absorption spectrum of low-pressure gas-phase water samples (presently 10 μl liquid) in the 3 μm spectral region. The pre...

Maternal effects are widespread in ecology and can alter the dynamics of a population. We investigated the impact of maternal foraging strategies on offspring weaning mass--a proxy of maternal foraging success and of offspring survival--in southern elephant seals on îles Kerguelen. Using 4 years of data, we modelled pup weaning mass as a two-component mixture and used blood stable isotope value...

The antimicrobial peptide maculatin 1.1 (M1.1) is an amphipathic α-helix that permeabilizes lipid bilayers. In coarse-grained molecular dynamics (CG MD) simulations, M1.1 has previously been shown to form membrane-spanning aggregates in DPPC bilayers. In this study, a simple multiscale methodology has been applied to allow sampling of important regions of the free energy surface at higher resol...

[1] We report the influence of shear deformation on the microstructure of water-saturated olivine and clinopyroxene aggregates. Prior to deformation, the aqueous fluid was isolated in pockets along grain corners in the olivine-water aggregates, while it was interconnected by a network of grain-edge tubules in the clinopyroxene-water aggregate. During deformation of both types of aggregates, the...