soil erosion results from an interaction of several parameters, which vary in space and time. awareness ofenvironmental changes and their impact on the intensity and spatial pattern of water erosion can effectively help inrecognition of erosional reactions versus the affecting factors. the aim of this paper is to describe the development ofa methodology based on present knowledge and available ...

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Abstract In response to an open problem raised by S. Rabinowitz, we prove that $$ \begin{align*} \begin{array} [c]{l} \left( x^{2}+y^{2}\right) {}^{2}+8y\left( y^{2}-3x^{2}\right) \right) {}^{2}+432y\left( 351-10\left( \\ =567^{3}+28\left( {}^{3}+486\left( 67\left( -567\times18\right) \end{array} \end{align*} is the equation of a plane convex curve constant width.