Modelling and simulation of vacuum filtration of ore slurry: a case study on limestone-hosted Indian uranium ore

2015 ◽  
Vol 54 (4) ◽  
pp. 406-414
Author(s):  
Md. Serajuddin ◽  
K. Anand Rao ◽  
T. Sreenivas
2013 ◽  
Vol 23 (3-4) ◽  
Author(s):  
Bernhard Heinzl ◽  
Michael Landsiedl ◽  
Fabian Duer ◽  
Alexandros-Athanassios Dimitriou ◽  
Wolfgang Kastner ◽  
...  

Nukleonika ◽  
2016 ◽  
Vol 61 (3) ◽  
pp. 343-349 ◽  
Author(s):  
Viktor Goliáš ◽  
Gereltsetseg Tumurkhuu ◽  
Pavel Kohn ◽  
Ondřej Šálek ◽  
Jakub Plášil ◽  
...  

Abstract Significant uranium mineralization represented by a typical assemblage of uranyl supergene minerals in a quartz-uraninite vein hosted in the exocontact zone of the Variscan-Tanvald granite was found at a new construction site in the municipality of Jablonec n. Nisou. Activities of 222Rn in soil gas reached 1 MBq/m3 around two houses, with a maximum of 3.33 MBq/m3 between them on a uranium ore lens outcrop. The uranium content reaches up to 291 ppm eU (3595 Bq/kg 226Ra), and it is possible to find many ‘hot’ pieces of uranium ore fragments with a high percentage of uranium in the Quaternary cover in this place. This unfavourable situation is a result of an improper spatial planning process. The constructor was given the permission to construct the building even though the construction site did not meet safety requirements and the geological survey had failed. Not only geological prospecting was underestimated, but also the radon risk assessment was undervalued.


Author(s):  
Monica Dragoicea ◽  
Joao Falcao e Cunha ◽  
Monica Viorela Alexandru ◽  
Denisa Andreea Constantinescu

This chapter discusses the development of improved citizen services taking into consideration integration of agent-based modelling and simulation experience into conceiving, design and implementation activities with a strong focus on technology enabled service systems. Service design is formalized here towards the integration of customer experience, validated through service interaction modelling. Integration of user experience at design stage in the value co-creation process is a possible immediate evolution direction of projects in the Smarter Cities perspective. Guidelines for integrating a modelling and simulation perspective in service design are presented along with the Socio-Technical Systems Engineering process. The case study presented here is dedicated to Smart Transport. The chapter opens a larger discussion on specific research directions and knowledge transfer related to Smart Transport as highlighted in EU projects.


Author(s):  
Graham Coates ◽  
Meshal Alharbi ◽  
Chunhui Li ◽  
Sangaralingam Ahilan ◽  
Nigel Wright

The resilience of small and medium-sized enterprises (SMEs) to disruptive events is significant as this highly prevalent category of business forms the economic backbone in developed countries. This article provides an overview of the application of a computational modelling and simulation approach to evaluate SMEs' operational resilience to flooding based on combinations of structural and procedural mitigation measures that may be implemented to improve their premises' resistance to flooding and safeguard their business continuity. The approach integrates flood modelling and simulation with agent-based modelling and simulation (ABMS) within a modelled geographical environment. SMEs are modelled as agents based on findings of semi-structured interviews with SMEs that have experienced flooding or are at risk of flooding. In this paper, the ABMS has been applied to a new case study of the major flood event of 2007 in Tewkesbury. Furthermore, to enable an evaluation of the operational resilience of manufacturing SMEs in terms of the relative effectiveness of flood mitigation measures, a new coefficient based on production loss is introduced. Results indicate structural mitigation measures are more effective than procedural measures. While this result is intuitive, the approach provides a means of evaluating the relative effectiveness of combinations of mitigation measures that SMEs may implement to enhance their operational resilience to flooding. This article is part of the theme issue ‘Urban flood resilience’.


2018 ◽  
Vol 15 ◽  
pp. 57-68 ◽  
Author(s):  
Mirco Rampazzo ◽  
Michele Luvisotto ◽  
Nicola Tomasone ◽  
Irene Fastelli ◽  
Massimo Schiavetti

2021 ◽  
Vol 17 (2) ◽  
pp. 502-511
Author(s):  
C. Prieto-Torrell ◽  
A. Rodriguez-Gonzalez ◽  
M. Aulinas ◽  
J. L. Fernandez-Turiel ◽  
M.C. Cabrera ◽  
...  

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