To this end, we made finite difference simulations for several point sources located in the source region of the Tonankai earthquake, off Kii Peninsula.
After making the observation, LAs were provided with several point sources (Mini-Maglites™) and a stand to arrange them in order to reproduce a discrete version of the complex shadow they observed so that they could construct an explanatory model and invent the ray diagram (see Fig. 2c).
The calibration was performed by scanning a phantom containing several point sources and registering its optical images to maximum intensity projections of the SPECT volume.
We used data for several point source emissions of the two refineries to model hourly SO2 levels at 3,469 discrete receptor locations corresponding to the residential six-character postal code centroids in the East End of Montreal (in the FSAs H1A, H1B, H1K, H1L; Figure 1).
Several point-source outbreaks were related to each other by a common food source, even though the foods were often branded differently and supplied by different companies.
Pollutant concentrations around this monitoring location have changed over the last 10 years due to the shutdown of several nearby industrial point sources, likely reducing concentrations of specific metals assessed here, as well as the reduction in mobile source emissions as has occurred all around the United States.
In another report focused on the Zambezi River Basin of South Africa, Chenje (2000) specifically noted several point and nonpoint sources of pollution that affect both surface water and groundwater quality, including sewage-treatment facilities, pulp and paper mills, fertilizer factories, abattoirs, textile and cloth manufacturing entities, mining activities, agriculture, and chemical industries.
At several points its source material, largely derived from the FBI, states that it has closed inquiries or held them in "abeyance", as with the Aspcol connection.
A considerable quantity of toxic and hazardous substance is released into this important aquatic system through these industrial effluents along with huge organic load emanating from agricultural and shrimp culture activities and several non-point sources (such as discharges from fishing vessels and trawlers and runoff from adjacent landmasses).
The γ-rays attenuation-coefficients were measured as a function of the percentage of lead oxides for several γ-ray energies using point sources [241Am, 133Ba, 137Cs, and 60Co].
Several studies have been performed around point sources of pollution, such as industrial plants, using circular areas at different distances from the source to define exposure zones (e.g., Aylin et al. 2001; Wilkinson et al. 1997).
