This document presents the modeling of load profile consumption for Low-and-Moderate-Income (LMI) communities in Caribbean Islands, as well an assessment solar-rooftop energy potential. In this work, real data, together with synthetic and electricity bill were collected to validate improve models. The potential was obtained through a National Renewable Energy Laboratory (NREL) software called P...

The application of metaldehyde to agricultural catchment areas to control slugs and snails has caused severe problems for drinking water supply in recent years. In the River Thames catchment, metaldehyde has been detected at levels well above the EU and UK drinking water standards of 0.1 μg l-1 at many sites across the catchment between 2008 and 2015. Metaldehyde is applied in autumn and winter...

Alluvial aquifers in mountainous regions cover typically a limited area. Their contribution to catchment storage and outflow is rarely isolated; alluvial groundwater discharge under gauging stations is generally assumed negligible; and hydrological models tend to lump alluvial storage with other units. The role of alluvial aquifers remains therefore unclear: can they contribute significantly to...

This paper presents a comparative study using new approach for optimum design of rooftop grid connected PV system installation on an institutional building at Minia University, Egypt. The new approach demonstrated in this paper based on optimal configuration of PV modules along with inverters according to not only MPP voltage range but also maximum DC input currents of the inverter. Five differ...

South Africa has committed to address freshwater conservation at the catchment scale, using a combination of landscapelevel and species-level features as surrogates of freshwater biodiversity. To support this work, we examined fishes in the Olifants River catchment, where multiple anthropogenic pressures affect streams. Patterns in fish assemblage data across 88 sites were analysed and related ...

A manageable, relatively inexpensive model was constructed to predict the loss of nitrogen and phosphorus from a complex catchment to its drainage system. The model used an export coefficient approach, calculating the total nitrogen (N) and total phosphorus (P) load delivered annually to a water body as the sum of the individual loads exported from each nutrient source in its catchment. The exp...

SUMMARY The problems of computing and of presenting off-design variations of profile drag for the new family of rooftop aerofoils described in Ref.1 are examined by considering as a typical example a 50% rooftop section designed at a Mach number (Mdes > of 0.7 and having a thickness-chord ratio (t/c> of 0.1. Profile drag results are presented in two ways: (a> as a set of polar curves of CD vs C...