Précis: Glass composition of individual agglutinate grain is determined largely by the composition of a few soil grains, heterogeneous with respect to the bulk soil, impacted by a micrometeorite. Common perception or consensus: Lunar agglutinates form upon micrometeoritic bombardment of lunar soils and consequent preferential melting of the (otherwise homogeneous) finer fraction, scavenging unm...

Macromolecule Dynamics: from a Coarse Grain Approach to Continuum Modeling

A supervised feature selection algorithm was applied to determine the most important features contributing to wheat grain yield. Four hundreds seventy two fields (as records) from different parts of Iran which were different in 21 characteristics (features) were selected for feature selection analysis. Selection of the wide range of features, including location, genotype, irrigation regime, fer...

Soil creep is the most widespread and perhaps the least understood process of erosion on soil-mantled hillslopes. Soil is slowly ‘‘stirred’’ by burrowing creatures, and particles are displaced in wetting-drying cycles. These actions can cause downslope creep by processes analogous to particle diffusion. Other possible transport mechanisms include shear and viscous-like creep, such that precise ...

Tillage practices significantly influences soil physical characteristics and crop productivity. The infiltration characteristics, bulk density, porosity, penetration resistance, grain yield of rice and wheat were measured under no-till without residue (NT), roto-tillage (RT), and no-till with residue i.e. happy seeder (HS) in rice-wheat cropping system in sandy loam (SL) and loamy sand (LS) soi...

A well-known problem in designing high-level parallel programming models and languages is the “granularity problem”, where the execution of parallel task instances that are too fine-grain incur large overheads in the parallel runtime and decrease the speed-up achieved by parallel execution. On the other hand, tasks that are too coarse-grain create load-imbalance and do not adequately utilize th...

Coarse-grain parallelism in networking (that is, the use of multiple protocol processors running replicated software sending over several physical channels) can be used to provide gigabit communications for a single application. Since parallel network performance is highly dependent on real issues' such as hardware properties (e.g., memory speeds and cache hit rates), operating system overhead ...

Coarse-grain parallelism in networking (that is, the use of multiple protocol processors running replicated software sending over several physical channels) can be used to provide gigabit communications for a single application. Since parallel network performance is highly dependent on real issues' such as hardware properties (e.g., memory speeds and cache hit rates), operating system overhead ...

Arsenic (As) exposure from consumption of rice can be substantial, particularly for the population on a subsistence rice diet in South Asia. Paddy rice has a much enhanced As accumulation compared with other cereal crops, and practical measures are urgently needed to decrease As transfer from soil to grain. We investigated the dynamics of As speciation in the soil solution under both flooded an...