A: Point sources in air in the coronal plane (dotted lines represent x- and z-axis).
The phantoms used in these simulations corresponded to a point source scanned in air (blue line), a 100-mL sphere filled with activity placed at the center of a cylinder filled with cold (black line) and warm (red line) water.
Three types of simulations can be carried out: oxygen sag model for predicting oxygen deficit in a river, Gaussian model for predicting pollutant dispersion in air from a continuous point source, and pollutant dispersion in ground water from a point source.
In region A, the signal is explained by a line souce, and in region B by a point source.
Separations in the range 0.45 to 1.25 mm were found to be optimal in the case of a point source.
In this work, we modeled the performance of an implantable perfusion and oxygenation sensor and found a source-detector separation of around 0.5 mm to be optimal in the case of a point source.
Second, model 2 takes into account that Pc1 waves with different frequencies are mixed at a point source in the ionosphere (orange point in Figure 10b), corresponding to pearl structures created in the magnetosphere.
Outbreaks are usually circumscribed in time and attributable to a point source of infection which can be identified in the environment [ 4- 8].
Saito, M. Excitation of free oscillations and surface waves by a point source in a vertically heterogeneous Earth.
The simplest lightcurve we can create is from a point source in ACIS data.
