Partition functions and elliptic genera from supergravity

We develop the spacetime aspects of the computation of partition functions for string/M-theory on AdS(3) xM. Subleading corrections to the semi-classical result are included systematically, laying the groundwork for comparison with CFT partition functions via the AdS(3)/CFT(2) correspondence. This leads to a better understanding of the "Farey tail" expansion of Dijkgraaf et. al. from the point of view of bulk physics. Besides clarifying various issues, we also extend the analysis to the N=2 setting with higher derivative effects included.Comment: 34 page

On the symmetry of minimizers

For a large class of variational problems we prove that minimizers are symmetric whenever they are $C^1$.Comment: 17 pages, to appear in Arch. Rational Mech. Anal.; added Example 7 and some reference

General 2 charge geometries

Two charge BPS horizon free supergravity geometries are important in proposals for understanding black hole microstates. In this paper we construct a new class of geometries in the NS1-P system, corresponding to solitonic strings carrying fermionic as well as bosonic condensates. Such geometries are required to account for the full microscopic entropy of the NS1-P system. We then briefly discuss the properties of the corresponding geometries in the dual D1-D5 system.Comment: 44 page

No entropy enigmas for N=4 dyons

We explain why multi-centered black hole configurations where at least one of the centers is a large black hole do not contribute to the indexed degeneracies in theories with N=4 supersymmetry. This is a consequence of the fact that such configurations, although supersymmetric, belong to long supermultiplets. As a result, there is no entropy enigma in N=4 theories, unlike in N=2 theories.Comment: 14 page

The Analyticity of a Generalized Ruelle's Operator

In this work we propose a generalization of the concept of Ruelle operator for one dimensional lattices used in thermodynamic formalism and ergodic optimization, which we call generalized Ruelle operator, that generalizes both the Ruelle operator proposed in [BCLMS] and the Perron Frobenius operator defined in [Bowen]. We suppose the alphabet is given by a compact metric space, and consider a general a-priori measure to define the operator. We also consider the case where the set of symbols that can follow a given symbol of the alphabet depends on such symbol, which is an extension of the original concept of transition matrices from the theory of subshifts of finite type. We prove the analyticity of the Ruelle operator and present some examples

Análise do comportamento de matrizes suínas lactantes com o uso de enriquecimento ambiental na maternidade.

Projeto/Plano de Ação: 02.09.07.007

Effect of levels of polymaleic acid on the structural stability of saline soils.

The effect of levels of polymaleic acid was studied on the structural stability of two saline soils exposed to intensive cultivation. Soil samples with undisturbed structure were collected and placed in containers where levels polymaleic acid (0, 10, 20 and 30L/ha) were applied diluted water, in order to raise the moisture up to field capacity. One week later, controlled drip irrigation was applied using a volume corresponding to the pluviometric precipitation of the areas where the samples were collected. The washed soil samples were taken from the containers with the objective of lowering the moisture and separating the aggregates, considering those which passed through a 4 mm sieve and were retained in a 2 mm sieve. From each soil type, four bags of aggregates weighting 1 kg were taken, received a second application of the same levels of the polymer diluted in the irrigation water, adjusting the moisture of the samples of aggregates to 80% of the field capacity. The plastic bags with the humid samples were weighted and closed to keep the moisture uniform. Three subsamples from each bag were taken every 30 days to determine the weighed mean diameter (WMD) of the aggregates up to 150 days. After washing the soil with distilled water, WMD of the aggregates was reduced in the two soil types, in different proportions. The highest levels caused a lower reduction on the stability grade, showing the role of the polymer on protection of the aggregates against disintegration. After 30 days of the second application of the polymer on washed aggregates, WMD started to increase differently for all the treatments, showing is effect on increasing structural stability of the soils

A inovação e a tradição a partir de destilados vínicos: licor de mirtilo e aguardente de zimbro

Comunicação oral da qual só está disponível a apresentação.A inovação e a tradição a partir de destilados vínicos: licor de mirtilo e aguardente de zimbro

Produção de forragem e desempenho de novilhos em pastos de capim Mombaça sob pastejo rotativo.

O manejo do pastejo em plantas forrageiras tropicais pode promover incrementos na eficiência de produção, utilização ou colheita da forragem produzida. O objetivo nesse trabalho foi avaliar a produção de forragem e o desempenho de novilhos em Panicum maximum Jacq. cv. Mombaça sob pastejo rotativo