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This work presents the SEEG platform, a 46-year long dataset of greenhouse gas emissions (GHG) in Brazil (1970–2015) providing more than 2 million data records for the Agriculture, Energy, Industry, Waste and Land Use Change Sectors at national and subnational levels. The SEEG dataset was developed by the Climate Observatory, a Brazilian civil society initiative, based on the IPCC guidelines and Brazilian National Inventories embedded with country specific emission factors and processes, raw data from multiple official and non-official sources, and organized together with social and economic indicators. Once completed, the SEEG dataset was converted into a spreadsheet format and shared via web-platform that, by means of simple queries, allows users to search data by emission sources and country and state activities. Because of its effectiveness in producing and making available data on a consistent and accessible basis, SEEG may significantly increase the capacity of civil society, scientists and stakeholders to understand and anticipate trends related to GHG emissions as well as its implications to public policies in Brazil.

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Strong doubts havc been expressed about the validity of the quasi-equilibrium (QE) assumption used in the derivation of the analytical expressions of thermoluminescence (TL). So far there is no established method available to check if QE actually prevails during the emission of an experimental TL signal. The present study shows that the level of QE changes with a change in the heating rate beta. The change in the level of QE in its turn gets reflected in a change in peak shape when the system turns to a non-QE condition. This property is used as the first ever experimental method to test whether or not the emission of a given glow peak occurs under the QE condition. An essential condition for holding the QE condition is found to be T(R)/taum> or = 10(-3) where T(R) and taum are the glow peak recording duration and the maximum value of the free carrier lifetime, respectively. This relation between T(R) and taum is useful in finding the approximate value of taum. The value of taum being a function of the concentration and cross section of the TL related centres, one may be able to assess these basic parameters from the study of TL glow curves. The theoretical results are discussed in the perspective of LiF (TLD-100).

Two natural zircon samples A and B from Minas Gerais State, Brazil were investigated. Large amounts of Fe, Y, Ce, U and Th were detected as impurities in two samples. TL peaks at 145, 190, 240 and 290 o C in both samples were found, with sublinear growth. The emission spectra of TL light present two bands, one at 480 nm and the other one at 580 nm indicating that there are two recombination centers. The heat treatment at 500, 600, 700, 800 and 900 o C before irradiation produces increases in TL sensitivity with temperature. [2] investigated then the TL dosimetric properties of natural zircon from Cambodia, after irradiating it with UV-,X-, -, and ß-rays. TL peaks at 325-350, 385-390, 540, and 595-625 K were detected. The third peak emits 480 and 580 nm light, the fourth peaks, 545 nm light. The 480 and 580 nm bands are due to Dy 3+ and the 545 nm band to Tb

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An analysis and brief discussion of experimental ionic conductivity σ and activation energy E A in the binary rubidium and cesium silicate systems is presented, exemplified on 23 and 30 glasses respectively, in a wide composition range (5-45 Rb 2 O and Cs 2 O mole%). The Anderson and Stuart model has been considered to describe the variation of activation energy E A with alkali concentration in both alkali-silica systems. In this analysis were considered experimental parameters, like shear modulus G and relative dielectric permittivity ε. An "universal" finding is obtained using log σ × E A /k B T in 51 of 53 glasses considering both alkali systems, where E A is the activation energy for conduction, k B is the Boltzmann constant and T is the absolute temperature. This strong correlation by more than 13 (Rb-based glasses) and 15 (Cs-based glasses) orders of magnitude means that σ is governed mainly by E A . An explanation for this behavior links ionic conductivity and microscopic structure.