Probabilistic data integration for characterization of spatial distribution of residual LNAPL

In Finland and Sweden the KBS-3 concept has been chosen for the disposal of spent nuclear fuel in crystalline rock. Recent experiments have shown that heterogeneity of rock may play a major role in the transport of radionuclides. Autoradiographic methods have been proven to be able to assist the characterization of heterogeneous structures. In this study we tested a novel filmless autoradiographic device called BeaverTM which applies a micro patterned gaseous detector in order to quantitatively map beta emissions from C-14 atoms. The studied samples were impregnated with C-14-labelled methylmethacrylate (C-14-MMA) and polymerized to C-14-PMMA with thermal initiator. The BeaverTM was then used to determine the spatial distribution of the C-14-PMMA by measuring the C-14 emissions. The porosity is determined from the amount of C-14-PMMA in the rock sample and results were compared to ones from phosphor imaging plate autoradiography. The resulting images show a heterogeneous distribution of porosity which arises from the different minerals. The samples were chosen from three sites that have been used recently for in situ diffusion experiments: Olkiluoto (Finland), Äspö (Sweden) and Grimsel (Switzerland).

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CONHECENDO A PESCA ARTESANAL EM TRAMANDAÍ E IMBÉ – RS: DISTRIBUIÇÃO ESPACIAL E DESAFIOS

Ciência e Natura ◽

10.5902/2179460x24320 ◽

2017 ◽

Vol 39 (2) ◽

pp. 341

Author(s):

Abraão Martins Terceiro

Keyword(s):

Spatial Distribution ◽

Rio Grande ◽

Economic Importance ◽

The State ◽

Artisanal Fisheries ◽

Rio Grande Do Sul ◽

Popular Knowledge

The work deals with the theme artisanal fisheries and has as main objective, the characterization of the activity in the municipalities of Tramandaí and Imbé, located in the State of Rio Grande do Sul, the spatial distribution and the challenges to occur fisheries in this region. The research is justified by the large number of fishermen in the study area and the economic importance of the activity, mapping through popular knowledge areas of greatest value for fishing, the main existing species and the main features and instruments used in fish capture.

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Remote sensing and seismic data integration for the characterization of a rock slide and an artificially triggered rock fall

Engineering Geology ◽

10.1016/j.enggeo.2019.04.010 ◽

2019 ◽

Vol 257 ◽

pp. 105113 ◽

Cited By ~ 14

Author(s):

Marta Guinau ◽

Mar Tapia ◽

Cristina Pérez-Guillén ◽

Emma Suriñach ◽

Pere Roig ◽

...

Keyword(s):

Remote Sensing ◽

Data Integration ◽

Seismic Data ◽

Rock Fall ◽

Rock Slide

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Three-Dimensional Characterization of the Microstructure of Bioglass/Polyethylene Composite by X-Ray Microtomography

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.330-332.503 ◽

2007 ◽

Vol 330-332 ◽

pp. 503-506

Author(s):

Xiao Wei Fu ◽

Jie Huang ◽

E.S. Thian ◽

Serena Best ◽

William Bonfield

Keyword(s):

Spatial Distribution ◽

Volume Fraction ◽

Three Dimensional ◽

X Ray ◽

Polyethylene Composite ◽

Bioactive Properties ◽

Recent Developments ◽

3D Information

A Bioglass® reinforced polyethylene (Bioglass®/polyethylene) composite has been prepared, which combines the high bioactivity of Bioglass® and the toughness of polyethylene. The spatial distribution of Bioglass® particles within the composite is important for the performance of composites in-vivo. Recent developments in X-ray microtomography (XμT) have made it possible to visualize internal and microstructural details with different X-ray absorbencies, nondestructively, and to acquire 3D information at high spatial resolution. In this study, the volume fraction and 3D spatial distribution of Bioglass® particles has been acquired quantitatively by XμT. The information obtained provides a foundation for understanding the mechanical and bioactive properties of the Bioglass®/polyethylene composites.

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