Abstract This study examines key factors influencing the economic benefit of rainwater harvesting on household at Mongla Upazila in Bagerhat district coastal Bangladesh. The survey questionnaire was used to collect primary data from 1040 households. Ordinary Least Square (OLS) regression analysis applied understand relationship between and that can affect household. empirical result shows incom...

Sir, The impact of raindrops has major consequences on the soil surface conditions. The effects of rain drop energy on erosion and infiltration have been investigated (Fernandes et al., 1997). Palmer (1965) found that a thin layer of water increases the effects of raindrop impact force on soil properties; this result has been confirmed by numerical simulation (Huang et al., 1983; Chang & Hills,...

Abstract. We are interested in simulating overland flow on agricultural fields during rainfall events. In this context, we definitely have to cope with dry/wet interfaces and water inflow on dry soil. The model considered is the Shallow Water system (or Saint-Venant equations) without infiltration. Moreover, the model has to be completed with friction terms. It is numerically solved by a finite...

A survey of energy harvesting methods specific to a marine environment is presented in order to optimally choose and design an energy harvester that will be embedded in an autonomous water quality monitoring platform. Output power formulae are derived as a function of characteristic device length in order to perform a scaling analysis and a comparison of the mechanisms. Limitations of the diffe...

Soil pH, soil acidity, and their effects on plants The pH scale, ranging from 0 to 14, is used to indicate acidity and alkalinity. pH is a measure of the concentration of hydrogen ions (symbol = H) in the water contained in the soil. A pH of 7.0 is neutral, values below 7 are acidic, and those above 7 are alkaline (basic). The lower the pH, the more acid the soil. Each unit pH drop indicates te...

Two simple heuristic model formulations for warm rain formation are introduced and their behavior explored. The first, which is primarily aimed at representing warm rain formation in shallow convective clouds, is a continuous collection model that uses an assumed cloud droplet size distribution consistent with observations as the source of embryonic drizzle drops that are then allowed to fall t...