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Manfredo P. do Carmo-- Selected papers by Manfredo do Carmo, Keti Tenenblat

By Manfredo do Carmo, Keti Tenenblat

A precis of the medical actions -- precis of the Papers during this quantity -- The Cohomology Ring of yes Kählerian Manifolds -- Isometric immersions with semi-definite moment quadratic kinds -- minimum Submanifolds of a Sphere with moment basic kind of consistent size -- tension and Convexity of Hypersurfaces in Spheres -- short Survey Of minimum Submanifolds II -- minimum immersions of spheres into spheres -- round photographs of Convex Surfaces -- at the dimension of a strong minimum floor in R3 -- On minimum Immersions with Parallel basic Curvature Tensor -- minimum Surfaces: balance and Finiteness -- an explanation of a common Isoperimetric Inequality for Surfaces -- reliable entire minimum Surfaces in R3 are Planes -- balance of minimum Surfaces and Eigenvalues of the Laplacian -- balance Of minimum Submanifolds -- Rotation Hypersurfaces in areas of continuous Curvature -- balance of Hypersurfaces with consistent suggest Curvature -- Compact Conformally Flat Hypersurfaces -- The impression of the boundary behaviour on hypersurfaces with consistent suggest curvature in Hn+1 -- Conformal tension -- balance of Hypersurfaces of continuous suggest Curvature in Riemannian Manifolds -- Hypersurfaces of continuing suggest Curvature -- strong Hypersurfaces with consistent Scalar Curvature -- Hypersurfaces With consistent suggest Curvature in Spheres -- whole Hypersurfaces with consistent suggest Curvature and Finite overall Curvature -- learn on Differential Geometry in Brazil -- Eigenvalues Estimates on entire Noncompact Riemannian Manifolds and functions -- Compact minimum hypersurfaces with index one within the actual projective house -- Ricci curvature and the topology of open manifolds -- balance of hypersurfaces with vanishing r-mean curvature in euclidean house -- A theorem of Hopf and the Cauchy-Riemann inequality -- A Hopf theorem for open surfaces in product areas -- A Hopf Theorem for Ambient areas of Dimensions larger than 3

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They penetrated, however, the seed coat of Cassia grandis, Enterolobium cyclocarpum, and Hura crepitans. The larvae died in seeds of Pterocarpus rohrii and Swietenia panamens is. These results show that the bruchids can attack some of the seeds of non-host species. But on general terms, hardness and chemistry of the seed coats may be a barrier to the entry by larvae. An interesting study of Janzen and Higgings (1979) draws attention to the fact that absolute protection of seeds from predation may even be disadvantageous for the plant.

Consequently, the quantitative defense substances are often present in high concentrations, up to 60% dry weight in the case of tannins. Qualitative agents of defense such as cardenolides, glucosinolates, alkaloids, cyanogenic compounds and the like occur in low concentrations «2% dry weight), but render little protection from specialized herbivores, even in high concentrations. Secondary compounds in high concentrations which contain N may exercise a dual defensive and nitrogen-storage effect, particularly when occurring in seeds.

1976). Some seeds have improved germination after passage through a vertebrate gut, either of birds or of mammals. Janzen (1971 b) suggests that these seeds have probably a retarded germination, if they do not pass through a vertebrate gut. Seeds ingested by mammalia have often a chemical or mechanical protection developed. Janzen mentions a great variety of them (see chapter on Predation). A certain zonation concerning formation of fleshy fruits and the zones of mammalian activity may be distinguished in the forest.

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