Produtos iconográficos e cartográficos gerados pela Embrapa Monitoramento por Satélite.

Reune os principais conceitos e informações amplamente utilizados na área de cartografia e geoprocessamento, visando homogeneizar o padrão de apresentação dos produtos da Unidade, segundo as normas correntes, sugerindo conceitos, rótulos e módulos a serem aplicados em mapas e cartas temáticas.bitstream/item/105448/1/890.pd

Modelling inhibitory effects of long chain fatty acids in the anaerobic digestion process

Mathematical modelling of anaerobic digestion process has been used to give new insights regarding dynamics of the long chain fatty acids (LCFA) inhibition. Previously published experimental data, including batch tests with clay mineral bentonite additions, were used for parameter identification. New kinetics were considered to describe the bio-physics of the inhibitory process, including: i) adsorption of LCFA over granular biomass and ii) specific LCFA substrate (saturated/unsaturated) and LCFA-degrading populations. Furthermore, iii) a new variable was introduced to describe the state of damage of the acetoclastic methanogens in order to account for the loss of cell-functionality (inhibition) induced by the adsorbed LCFAs. The proposed model modifications are state compatible and easy to be integrated into the International Water Association’s Anaerobic Digestion Model N1 (ADM1) framework. Practical identifiability of model parameters was assessed with a global sensitivity analysis, while calibration and model structure validation were performed on independent data sets. A reliable simulation of the LCFA-inhibition process can be achieved, if the model includes the description of the adsorptive nature of the LCFAs and the LCFA-damage over specific biomass. The importance of microbial population structure (saturated/unsaturated LCFA-degraders) and the high sensitivity of acetoclastic population to LCFA are evidenced, providing a plausible explanation of experimental based hypothesis.This work was funded by the Spanish Ministry of Science and Innovation (projects CTM 2010-18212 and PSE-120000-2009-27)

Carta de uso atual das terras e cobertura vegetal do Município de Jaguariúna, São Paulo.

O trabalho divulga o levantamento e a elaboração da carta de uso atual das terras e da cobertura vegetal do Município de Jaguariúna, região metropolitana de Campinas-SP, com a aplicação de técnicas utilizadas em geoprocessamento

Towards the ultimate regime in Rayleigh-Darcy convection

Numerical simulations are used to probe Rayleigh-Darcy convection in fluid-saturated porous media towards the ultimate regime. The present three-dimensional dataset, up to Rayleigh-Darcy number, suggests that the appropriate scaling of the Nusselt number is, fitting the computed data for. Extrapolation of current predictions to the ultimate linear regime yields the asymptotic law, about less than indicated in previous studies. Upon examination of the flow structures near the boundaries, we confirm previous indications of small flow cells hierarchically nesting into supercells, and we show evidence that the supercells at the boundary are the footprints of the megaplumes that dominate the interior part of the flow. The present findings pave the way for more accurate modelling of geophysical systems, with special reference to geological sequestration

Cartografia do uso atual das terras nas Áreas de Proteção Ambiental de Sousas e Joaquim Egídio, Campinas-SP, Brasil.

Divulga os resultados do levantamento, utilizando sensoriamento remoto e geoprocessamento, do uso das terras nas APAS de Sousas e Joaquim Egídio, no Município de Campinas-SP

Strong Rayleigh-Darcy convection regime in three-dimensional porous media

We perform large-scale numerical simulations to study Rayleigh-Darcy convection in three-dimensional fluid-saturated porous media up to Rayleigh-Darcy number. At these large values of, the flow is dominated by large columnar structures - called megaplumes - which span the entire height of the domain. Near the boundaries, the flow is hierarchically organized, with fine-scale structures interacting and nesting to form larger-scale structures called supercells. We observe that the correlation between the flow structure in the core of the domain and at the boundaries decreases only slightly for increasing, and remains rather high even at the largest considered here. This confirms that supercells are the boundary footprint of megaplumes dominating the core of the domain. In agreement with available literature predictions, we show that the thickness of the thermal boundary layer scales very well with the Nusselt number as. Measurements of the mean wavenumber - inverse of the mean length scale - in the core of the flow support the scaling, in very good agreement with theoretical and numerical predictions. Interestingly, the behaviour of the mean wavenumber near the boundaries scales as, which is distinguishably different from the presumed linear behaviour. We hypothesize that a linear behaviour can only be observed in the ultimate regime, which we argue to set in only at in excess of, whereas a sublinear behaviour is recovered at more modest. The present results are expected to help the development of long desired reliable models to predict the large- and fine-scale structure of Rayleigh-Darcy convection in the high- regime typically encountered in geophysical processes, such as for instance in geological carbon dioxide sequestration

Uso de técnicas de sensoriamento remoto aplicadas à estimativa da produção florestal.

EVINCI. Resumo 053

Total orthotopic small bowel transplantation in swine under FK 506

Previous experimental studies in rodents and in dogs have established the efficacy of FK 506 in controlling the immunologic events following small bowel or multivisceral transplantation.1–5 To complete the assessment of FK 506 in experimental small bowel transplantation, we present here our experience with the frequently used swine model

Divulgação de resultados de eventos científicos através de mídia eletrônica.

EVINCI. Resumo 051