This research identified toxin detection limits using the variable fluorescence of naturally occurring microalgae in source drinking water for five chemical toxins with different molecular structures and modes of toxicity. The five chemicals investigated were atrazine, Diuron, paraquat, methyl parathion, and potassium cyanide. Absolute threshold sensitivities of the algae for detection of the toxins in unmodified source drinking water were measured. Differential kinetics between the rate of action of the toxins and natural changes in algal physiology, such as diurnal photoinhibition, are significant enough that effects of the toxin can be detected and distinguished from the natural variance. This is true even for physiologically impaired algae where diminished photosynthetic capacity may arise from uncontrollable external factors such as nutrient starvation. Photoinhibition induced by high levels of solar radiation is a predictable and reversible phenomenon that can be dealt with using a period of dark adaption of 30 minutes or more.
We point out that, because of this property, the solid is also
Rather inefficient in erasing anisotropic deformations of the geometry. This
Allows for a prolonged inflationary anisotropic solution, providing the first
Example with standard gravity and scalar fields only which evades the
We model this scenario as
An optimization problem, in which the target consists of minimizing the costs
Of the virtual links provided by the SON and the unknowns are the provisioned
Bandwidths of these links. Since the resulting objective function is neither
Continuous nor convex, the solution of th...
We focus on two
Cases: the metal poor red giant KIC 7341231 ("Otto") and intermediate mass core
Helium burning stars. For both we examine limiting case studies for angular
Momentum coupling between cores and envelopes under the assumption of rigid
Rotation on the main sequence. We discuss the expect...
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