The intensification of dairying can have adverse impacts on the environment through diminished soil quality and greater loss of nutrients to water bodies. Poor soil quality can reduce the productivity and sustainability of pastoral farming systems. The effects of increased stocking rate (SR) (3, 4 and 5 cows/ha) and introducing a cut and carry system on soil, pasture and water quality were comp...

Many asteroids with low bulk densities must have a rubble pile structure and internal voids. Although little is known about their internal structure, numerical simulations of impact events on these asteroids rely on assumptions on how the voids are distributed. We present a new approach to model impacts on rubble pile asteroids that explicitly takes into account their internal structure. The fo...

Plantios de árvores proporcionam aumento dos estoques carbono do solo, mas estudos envolvendo espécies nativas da Amazônia são incipientes. Objetivou-se avaliar a variação espacial atributos físicos e estoque orgânico no solo em plantio paricá. Na área estudo, coletaram-se amostras nas profundidades 0 20 cm 40 os parâmetros analisados foram: textura macroporosidade, microporosidade, densidade a...

Abstract Understanding the mechanisms of strain localization leading to brittle failure in reservoir rocks can shed light on geomechanical processes such as porosity and permeability evolution during rock deformation, induced seismicity, fracturing, subsidence geological reservoirs. We perform triaxial compression tests three types porous reveal local deformation that control system-size failur...

Increased soil compaction resulting from livestock treading and use of heavy machinery is a major environmental hazard often linked to degradation the ecosystem economic services. However, there weak quantitative understanding spatial temporal extent how it modifies properties associated functions. To address this challenge, we developed framework for systematic modelling caused by grazing anim...

Context. Asteroid (22) Kalliope is the second largest M-type asteroid in main belt and orbited by a satellite, Linus. Whereas mass of already well constrained thanks to presence moon, its volume still poorly known, leading uncertainties on bulk density internal structure. Aims. We aim refine shape thus diameter density, as orbit moon better constrain mass, hence Methods. acquired disk-resolved ...

Sorption processes can be used to study different characteristics of coal properties, such as gas content (coalbed methane potential of a deposit), gas diffusion, porosity, internal surface area, etc. Coal microstructure (porosity system) is relevant for gas flow behaviour in coal and, consequently, directly influences gas recovery from the coalbed. This paper addresses the determination of coa...

Although agricultural land management is known to affect near-surface soil physical quality (SPQ), the characteristics of these affects are poorly understood, and diagnostic SPQ indicators are not well-developed. The objective of this study was to measure a suite of potential SPQ indicators using intact soil cores and grab samples collected from the 0–10 cm depth of a clay loam soil with the tr...

The effect of bacterial secretion of an exopolysaccharide (EPS) on rhizosphere soil physical properties was investigated by inoculating strain NAS206, which was isolated from the rhizosphere of wheat (Triticum durum L.) growing in a Moroccan vertisol and was identified as Pantoea aglomerans. Phenotypic identification of this strain with the Biotype-100 system was confirmed by amplified ribosoma...