oil (the substance recommended as the panacea by the British Medical Journal). Celli's experience with this substance, however, by no means leads him to give it the first place. In making their very numerous experiments Celli and Casagrandi take as the criterion for judging the larvicidal action of any given substance, the time taken to kill the larvre, and they consider any substance inefficac...

When plane-wave destruction (PWD) is implemented by implicit finite differences, the local slope is estimated by an iterative algorithm. We propose an analytical estimator of the local slope that is based on convergence analysis of the iterative algorithm. Using the analytical estimator, we design a noniterative method to estimate slopes by a three-point PWD filter. Compared with the iterative ...

are exquisitely sensitive to cyanideor nitrogen-induced mitochondrial inhibition. If oxidative phosphorylation is unavailable, ATP levels decline rapidly, producing alterations in the cell membrane which allow massive losses of potassium and water. The result is a shrunken, spiculated, viscous cell whose rheologic properties would favor its sequestration by the reticuloendothelial system. Those...

Strigolactones control many aspects of plant growth and development, but the active form(s) of strigolactones and their mode of action at the molecular level are unknown. A new study provides evidence that an α/β-fold protein plays a central multifunctional role in strigolactone metabolism, perception and signalling.

This paper looks at the use of techniques to prevent the communication of steganographic data by filtering. These filters are broken into two categories; Overwriting and Dissolving. Overwriting can be defined as being the effective implementation of a Steganographic message over the original message. Dissolving can be defined as being modifications to the picture in order to prevent the decodi...

0