Crossover of thermal to shot noise in chaotic cavities

We study the crossover between thermal and shot-noise power in a chaotic quantum dot in the presence of non-ideal contacts at finite temperature. The result explicitly demonstrates that the temperature affect the suppression-amplification effect present in the main quantum noise. In particular, the weak localization contribution to the noise has an anomalous thermal behavior when one let the barriers vary, indicating the presence of a critical point related to specific value of the tunneling barriers. We also show how to get to the opaque limit of the quantum dot at finite temperature.Comment: 6 pages, 5 figures. To be published in Europhysics Letter

How many green jobs are there in electricity generation? A replicable quantification method for developing countries under data constraints

Assessing the scale of green jobs and the socioeconomic effects of the energy transition is relevant and timely, while clear, comparable methodologies are still scarce. The discussion around just transitions, and the extent to which renewable energy creates more positive socioeconomic impacts than fossil fuels, increasingly attracts policymakers' and researchers' attention. However, data constraints, particularly in developing economies, expose a relevant gap in providing quantitative evidence for such discussions. This is especially relevant in countries with outstanding potential for renewable deployments, such as the case of Brazil. Existing data usually is considerably aggregated into activities irrespectively of technology or Greenhouse gas emission profile, and general international frameworks for such quantification may prove inadequate. In this paper, we propose a replicable data triangulation approach to disaggregate electricity jobs and wages into renewable and non-renewable electricity generation sources applied to the case of Brazil, using national accounts data, energy generation statistics and electricity-source specific employment coefficients from where data is available. One can use the resulting dataset either purely as the current scale of renewable and non-renewable electricity jobs and income or as the database for further modelling projections, particularly macroeconomic, multisectoral models, namely input-output and computable general equilibrium models

Impacts of the agricultural sector technological change on brazilian economy.

Long term economic and social impacts of the agricultural expansion in Brazil: invisible revolution and social inclusion; Increases in productivity and exports: an exploratory analysis; Effects of agricultural research on the consumer

Superior mesenteric artery syndrome in a young woman

info:eu-repo/semantics/publishedVersio

Hydration and anomalous solubility of the Bell-Lavis model as solvent

We address the investigation of the solvation properties of the minimal orientational model for water, originally proposed by Bell and Lavis. The model presents two liquid phases separated by a critical line. The difference between the two phases is the presence of structure in the liquid of lower density, described through orientational order of particles. We have considered the effect of small inert solute on the solvent thermodynamic phases. Solute stabilizes the structure of solvent, by the organization of solvent particles around solute particles, at low temperatures. Thus, even at very high densities, the solution presents clusters of structured water particles surrounding solute inert particles, in a region in which pure solvent would be free of structure. Solute intercalates with solvent, a feature which has been suggested by experimental and atomistic simulation data. Examination of solute solubility has yielded a minimum in that property, which may be associated with the minimum found for noble gases. We have obtained a line of minimum solubility (TmS) across the phase diagram, accompanying the line of maximum in density (TMD). This coincidence is easily explained for non-interacting solute and it is in agreement with earlier results in the literature. We give a simple argument which suggests that interacting solute would dislocate TmS to higher temperatures

Densidade populacional de patógenos e antagonistas habitantes do solo em regiões produtoras de feijoeiro comum.

O objetivo deste trabalho foi estimar a densidade das populações de Fusarium solani, Fusarium oxysporum, Rhizoctonia solani e Trichoderma spp. em áreas relevantes para a produção do feijoeiro comum (Phaseolus vulgaris) nos estados do Paraná e de Minas Gerais, os dois principais produtores desta cultura no Brasil

Diversidade cultural, virulência e agressividade de Rhizoctonia spp. em solos cultivados com feijoeiro comum.

Este trabalho teve como objetivo avaliar a diversidade cultural, a virulência e a agressividade de isolados de Rhizoctonia solani ao feijoeiro comum (Phaseolus vulgaris), provenientes de áreas com histórico de cultivo desta espécie