Modelling frequency distributions of 5 minute-averaged solar radiation indexes using Beta probability functions

Five minute-averaged values of sky clearness, direct and diffuse indices, were used to model the frequency distributions of these variables in terms of optical air mass. From more than four years of solar radiation observations it was found that variations in the frequency distributions of the three indices of optical air mass for Botucatu, Brazil, are similar to those in other places, as published in the literature. The proposed models were obtained by linear combination of normalized Beta probability functions, using the observed distributions derived from three years of data. The versatility of these functions allows modelling of all three irradiance indexes to similar levels of accuracy. A comparison with the observed distributions obtained from one year of observations indicate that the models are able to reproduce the observed frequency distributions of all three indices at the 95% confidence level.

Aggressive management of orbital meningeal melanocytoma

Objective. Meningeal melanocytoma generally occurs in the posterior fossa. Orbital manifestation is rarely encountered.Methods. A thirty-five year-old man presented with progressive proptosis of his right eye. Computed tomography (CT) and Magnetic Resonance Imaging (MRI) of the brain showed an expansive intraconal mass lesion occupying the superior orbital compartment, the entire orbital apex, and the optic foramen. Histological analysis and Immunohistochical staining for S-100 and HMB-45 monoclonal antibodies confirmed melanocytoma.Findings. Microsurgical removal was accomplished through a fronto-orbital craniotomy. Chemotherapy and irradiation followed the initial intervention. The patient returned for follow up two years after surgery, complaining of headache and right visual loss. A subfrontal tumor with massive edema was found on follow up CT scan.Interpretation. Meningeal melanocytomas are rare benign pigmented tumors of the central nervous system. They are predominant in the posterior fossa and spinal cord and frequently mistaken for melanomas, especially on frozen sections. Orbital presentation is rare. The natural history is poorly defined.

Application of a glassy carbon electrode modified with poly(glutamic acid) in caffeic acid determination

Glassy carbon electrodes were coated with films of poly( glutamic acid) ( PG), and the modified electrode proved to be very effective in the oxidation of caffeic acid. The performance of the film was also tested with ascorbic acid, coumaric acid, ferulic acid, sinapic acid and chlorogenic acid. At pH 5.6, all the hydroxycinnamic acids yield a higher peak current intensity when oxidized after incorporation in the PG-modified electrode, and only the oxidation of ascorbic acid exhibits overpotential reduction. At pH 3.5 only caffeic and chlorogenic acid are incorporated in the modified electrode and exhibit a well-defined oxidation wave at +0.51 V and +0.48 V, which is the base for their determination. Linear calibration graphs were obtained from 9 x 10(-6) mol L-1 to 4 x 10(-5) mol L-1 caffeic acid by linear voltammetric scan and from 4 x 10(-6) mol L-1 to 3 x 10(-5) mol L-1 by square wave voltammetric scan. The method was successfully applied to the determination of caffeic acid in red wine samples without interference from other hydroxycinnamic acids or ascorbic acid.

Anatomy of Brazilian Eriocaulaceae: correlation with taxonomy and habitat using multivariate analyses

In this study we present a survey on vegetative anatomy in species of Actinocephalus, Blastocaulon, Eriocaulon, Leiothrix, Paepalanthus, Philodice, Syngonanthus, and Tonina (Eriocaulaceae). Multivariate analyses were used to correlate anatomical characters to taxa and the habitats where the species occur. Root and stem anatomical characters seem to be more affected by environmental factors where these species occur, and seem of little value for delimiting major taxonomic groups within the family. Other characters in the leaves, such as epidermis with thickened wall cells, compartmented substomatal chambers, mesophyll with hypodermis, compact chlorenchyma, collenchymatous bundle sheath extensions, and numerous vascular bundles, were shown to be important for defining species clusters in Leiothrix, Syngonanthus, and Paepalanthus subg. Platycaulon. Similarly, loosely aggregated chlorenchyma caused Blastocaulon, Eriocaulon, Philodice, Syngonanthus sect. Carpocephalus, S. sect. Syngonanthus, and Tonina, genera from humid environments, to cluster. Scape characters appear to be more informative in discriminating groups. This situation probably reflects lower selection pressures determining anatomical characters of this organ.

Characterisation of sugar cane combustion particles in the Araraquara region, Southeast Brazil

Biomass burning is an important primary and secondary source of aerosol particles. The presence of carbonaceous particles in the respirable size range makes the study of this fraction important in view of possible health and climatic effects. The annual burning of sugar cane plantations causes emission of huge amounts of pyrogenic particles. Aerosol samples were collected in Araraquara city, São Paulo state, Brazil, during the harvest season for fine and coarse particles and bulk; they were analysed by electron-probe microanalysis, including facilities for low-Z element determination (low-Z EPMA) and by energy-dispersive X-ray fluorescence (EDXRF), in order to investigate the elemental composition of individual particles and bulk samples, respectively. Numerical analysis of the EPMA results by hierarchical clustering shows high contributions of carbonaceous particles that can be distinguished mainly in two different types: biogenic and carbon-rich. Additionally, two significant contributions of aluminosilicate particles were identified: as rather pure aluminosilicates or mixed with carbonaceous species. The EDXRF results are compatible with those of aerosol particles in Amazon, which is nowadays one of the main sources of biogenic particles in the world.

Estimation of water transit time in soils under Amazon forest cover using variations in sigma18O values.

In an attempt to estimate the soil-water transit time using the variation in 18O values, a statistical model was used. This model is based on linear regression analysis applied to the values observed for soil water and rain water. The time obtained from these correlations represents the mean time necessary for the water to run from one collecting point to the next.-from Authors

Estimation using 18O of the water residence time in small watersheds

From the 18O hydrograph separation method, it was found that groundwater contribution is the principal component of the total discharge produced by these two catchment areas. The weighted mean of the 18O concentration in the precipitation, obtained for a four year period, was close to -6.0‰, with a variation in range of +2.3‰ to -16.3‰. For Bufalos stream water the weighted mean of 18O values during the same period (1984-1987) was -6.3‰, with a variation from -2.5‰ to -10.1‰, whereas for Paraiso this mean was -6.4‰, with extreme values of -3.1‰ and -9.8‰. From these values it was found that the amplitude damping (Ariver/Aprecipitation) was 0.41 for the Bufalos watershed and 0.36 for Paraiso. Using the appropriate equation to estimate the mean residence time of water in the subsurface reservoir of the Bufalos and Paraiso watersheds, the results of 4.3 and 5.0 months, respectively, were obtained. -from Authors

Os direitos humanos como temática global e soberania no sistema internacional pós guerra fria: a Conferência de Viena

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Resolutions adopted by the Economic Commission for Latin America and the Caribbean at its Thirty-Sixth Session

Resolution 697(XXXVI) Horizons 2030 resolution .-- Resolution 698(XXXVI) ECLAC calendar of conferences for the period 2017-2018 .-- Resolution 699(XXXVI) Regional Conference on Women in Latin America and the Caribbean .-- Resolution 700(XXXVI) Mexico resolution on the establishment of the Forum of the Countries of Latin America and the Caribbean on Sustainable Development .-- Resolution 701(XXXVI) Support for the work of the Latin American and Caribbean Institute for Economic and Social Planning (ILPES) .-- Resolution 702(XXXVI) Statistical Conference of the Americas of the Economic Commission for Latin America and the Caribbean .-- Resolution 703(XXXVI) Regional Conference on Social Development in Latin America and the Caribbean .-- Resolution 704(XXXVI) Programme of work and priorities of the Economic Commission for Latin America and the Caribbean for the biennium 2018-2019 .-- Resolution 705(XXXVI) Caribbean Development and Cooperation Committee .-- Resolution 706(XXXVI) Application of Principle 10 of the Rio Declaration on Environment and Development in Latin America and the Caribbean .-- Resolution 707(XXXVI) Regional Conference on Population and Development in Latin America and the Caribbean .-- Resolution 708(XXXVI) Ministerial Conference on the Information Society in Latin America and the Caribbean .-- Resolution 709(XXXVI) Committee on South-South Cooperation .-- Resolution 710(XXXVI) Conference on Science, Innovation and Information and Communications Technologies of the Economic Commission for Latin America and The Caribbean .-- Resolution 711(XXXVI) Implementation of the Vienna Programme of Action for Landlocked Developing Countries for the Decade 2014-2024 .-- Resolution 712(XXXVI) Regional integration of statistical and geospatial information .-- Resolution 713(XXXVI) Regional follow-up to the outcomes of conferences on financing for development .-- Resolution 714(XXXVI) Place of the next session.

O que Freud dizia sobre as mulheres

Pós-graduação em Psicologia - FCLAS

Confluências histórico-técnicas no conceito de micropolifonia (1956-1966)

Pós-graduação em Música - IA

A profetisa que amava Bruce Lee: Oriente e Ocidente na perspectiva de Persépolis

In this article it is examined the work Persepolis, animation movie which summarizes the four volumes of the homonymous work launched in the form of comics in France, between 2000 and 2003. Narrated by the author Marjane Satrapi, it portraits the 15 years following the events of 1979 in Iran, from her personal perspective. Belonging to a left-wing social group, westernized according to the Iranian standards, she saw its utopias die as the Islamic Revolution won. However, during an auto exile in Vienna in her teen ages, she realized that the vaunted western liberty also charged its price. Considering Persepolis narrative literally as a look into perspective, it is debated the political and social aspects of the relationship east / west in a particular relation with the work of Edward Said.

As mulheres de Gustav Klimt

Study the production of Gustav Klimt is browsing through the history of a country, Austria, and travel the world of the Austro-Hungarian in their bellies. This work attempts to reflect the rebelliousness of the women who do not want to be sentenced to confinement despotic promoted by a man’s world. Klimt, by passion, hugs, with odd aesthetic, this flag.

Monitoramento da composição isotópica e físico-química da água de chuva no município de Rio Claro (SP)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)