The book deals with several aspects of soil erosion, focusing on its connection with the agricultural world. Chapters' topics are various, ranging from irrigation practices to soil nutrient, land use changes or tillage methodologies. The book is subdivided into fourteen chapters, sorted in four sections, grouping different facets of the topic: introductive case studies, erosion management in vineyards, soil erosion issue in dry environments, and erosion control practices.
We prove Maruyama’s conjecture on the boundedness of slope semistable sheaves on a projective variety deﬁned over a noetherian ring. Our approach also gives a new proof of the boundedness for varieties deﬁned over a characteristic zero ﬁeld. This result implies that in mixed characteristic the moduli spaces of Gieseker semistable sheaves are projective schemes of ﬁnite type. The proof uses a new inequality bounding slopes of the restriction of a sheaf to a hypersurface in terms of its slope and the discriminant.
This paper was selected for presentation at the symposium by an ARMA Technical Program Committee based on a technical and critical review of the paper by a minimum of two technical reviewers. The material, as presented, does not necessarily reflect any position of ARMA, its officers, or members.