OBJECTIVES The objective of this study was to investigate the quality of on-plot piped water and rainwater at the point of consumption in an area with rapidly expanding coverage of 'improved' water sources. METHODS Cross-sectional study of 914 peri-urban households in Kandal Province, Cambodia, between July-August 2011. We collected data from all households on water management, drinking water...

BACKGROUND Provision of good quality household drinking water is an important means of improving public health in rural communities especially in Africa; and is the rationale behind protecting drinking water sources and promoting healthy practices at and around such sources. OBJECTIVES To examine the microbial content of drinking water from different types of drinking water sources in Manonya...

This research aimed at assessment of the levels, speciation, risk indices and seasonal variation heavy metals (Cd Cu) in water sediments from Hunki Ox-bow Lake Awe L.G.A Nasarawa State, using Atomic Absorption Spectrophotometer (AAS), during dry wet seasons. The mean concentration Cd samples both seasons was higher than that Cu, but Cu on whole (raw) sediment samples. baseline levels (mg/L) wer...

Narrow band slices have been taken of the radio emission spectrum from convective clouds in the frequency range from 30 mc./sec. to 550 mc./sec. and a t 7.5 kc./sec. to monitor long and short range lightning discharges. Despite the careful choice of the bands to avoid interference from manmade sources, a major problem is the identification of spurious noise. I n spite of these interferences, ra...

Low-frequency electromagnetic radiation had previously been thought to cause human injury only by generation of excess heat or by shock from direct contact with electric current. Information accumulating over the past few decades, however, suggests that nonionizing electric and magnetic fields associated with this radiation may be an environmental etiology in human disease. Human beings are aff...

Emissions odors, gases, and dust from livestock production facilities arise primarily from three sources; buildings, manure storages, and land application (1). Emissions from buildings and storages form a baseline emission level. Eliminating emissions from one of the sources will likely not eliminate emissions entirely. Control technologies often address only one of the three sources. Many of t...

An expert system developed for use with geologic materials (minerals) has been modified to more generally analyze spectra of all types of materials, including manmade materials, military targets, and background. The methodology requires reflectance spectra, but can also be extended to emissive measurements in the mid-wave infrared (MWIR) and long-wave infrared (LWIR). The spectra of known mater...

In many practical situations, it is necessary to extract information from data of different types. For example, in geosciences, several sources of data can be used to determine the interior structure of the earth: the first arriving waves from earthquakes and from manmade sources, measurements of the earth’s gravity field, measurements of the dispersion of surface waves generated by earthquakes...