The University of Leoben, in the town of Leoben, Austria, is the country's university for mining, metallurgy and materials. It was founded on 4 November 1840, as the Steiermärkisch-Ständische Montanlehranstalt in Styria, Austria's mining region. In 1848 Peter Tunner relocated the university to the nearby town of Leoben, where it is still located today. That year the university had a mere 48 students enrolled. Wikipedia.
Fritz-Popovski G.,University of Leoben
Journal of Applied Crystallography | Year: 2013
An extension of the indirect Fourier transformation method for two-dimensional small-angle scattering patterns is presented. This allows for a model-free investigation of real-space functions of oriented structures. The real-space function is built from two-dimensional basis functions. The Fourier transformed basis functions are approximated to the scattering pattern. The solution to this problem in reciprocal space can be used to compute the corresponding real-space functions. These real-space functions contain information on size, shape, internal structure and orientation of the structures studied. Information on structures that are oriented in different distinct directions can be partly separated. The applicability of the technique is demonstrated on simulated data of oriented cuboids and on two experimental data sets based on the nanostructure of spruce normal wood. © 2013 International Union of Crystallography Printed in Singapore - all rights reserved.
Fischer F.D.,University of Leoben |
Svoboda J.,Academy of Sciences of the Czech Republic
Progress in Materials Science | Year: 2014
Diffusion of elements and vacancies is embedded in the framework of continuum mechanics and thermodynamics. The evolution equations for the site fractions of the substitutional and interstitial elements as well as the vacancies are derived. Each possible activity of vacancies, from no to non-ideal and ideal sources and sinks for vacancies, is taken into account. Manning's theory is implemented considering the vacancy wind effect. Furthermore, the role of a stress state is rigorously treated and shows its different influence on substitutional and interstitial elements as well as on vacancies. The reader is provided by the full set of diffusion equations for each kind of vacancy activity. Physically most relevant types of boundary condition, representing closed system with different activities of vacancies at its surface, are studied in detail. The theoretical framework is demonstrated by two illustrative examples emphasizing the interaction of bulk diffusion with an internal phase interface and/or the surface of the system expressed by contact conditions taking into account the properties of the interface or the surface. © 2013 Elsevier Ltd. All rights reserved.
Fritz-Popovski G.,University of Leoben
Journal of Applied Crystallography | Year: 2015
The new two-dimensional indirect Fourier transformation converts small-angle scattering patterns obtained by means of area detectors into two-dimensional real-space functions. These functions contain identical information to the scattering patterns, but many parameters related to the microstructure can be obtained directly from them. The size and shape of the microstructures are mainly reflected in the contours of the real-space functions. Their height can be used to get information on the internal architecture of the microstructures. The principles are demonstrated on nanostructured silica biotemplated by spruce wood. © 2015 International Union of Crystallography.
Agency: Cordis | Branch: H2020 | Program: RIA | Phase: SC5-11a-2014 | Award Amount: 9.20M | Year: 2015
Estimates indicate that the value of unexploited European mineral resources at a depth of 500-1,000 metres is ca 100 billion, however, a number of physical, economic, social, environmental and human constraints have as yet limited their exploitation. VAMOS! will provide a new Safe, Clean and Low Visibility Mining Technique and will prove its Economic Viability for extracting currently unreachable mineral deposits, thus encouraging investment and helping to put the EU back on a level playing field in terms of access to strategically important minerals. Deriving from successful deep-sea mining techniques, the VAMOS! mining solution aspires to lead to: Re-opening abandoned mines; Extensions of opencut mines which are limited by stripping ratio, hydrological or geotechnical problems; and opening of new mines in the EU. VAMOS! will design and manufacture innovative automated excavation equipment and environmental impact monitoring tools that will be used to perform field tests in four mine sites across Europe with a range of rock hardness and pit morphology. VAMOS will: 1.Develop a prototype underwater, remotely controlled, mining machine with associated launch and recovery equipment 2.Enhance currently available underwater sensing, spatial awareness, navigational and positioning technology 3.Provide an integrated solution for efficient Real-time Monitoring of Environmental Impact 4.Conduct field trials with the prototype equipment in abandoned and inactive mine sites with a range of rock types and at a range of submerged depths 5.Evaluate the productivity and and cost of operation to enable mine-ability and economic reassessment of the EUs mineral resources. 6. Maximize impact and enable the Market Up-Take of the proposed solutions by defining and overcoming the practicalities of the concept, proving the operational feasibility and the economic viability. 7. Contribute to the social acceptance of the new extraction technique via public demonstrations in EU regions.
Agency: Cordis | Branch: H2020 | Program: RIA | Phase: LCE-02-2014 | Award Amount: 5.82M | Year: 2015
Europe is confronted with significant changes arising from globalisation and the currently political challenges. This means for example based on the latest developments in Ukraine and exceptionally strong European dependency on gas from Russia, deep geothermal energy particularly based on engineered geothermal systems is becoming even more important to care for Europe`s energy security. If deep geothermal energy from EGSs becomes a significant cornerstone in future energy strategy, there is an urgent need to provide cost-efficient and novel drilling technologies and concepts in order to open up new European geothermal reservoirs for energy exploitation. Therefore the overall goal of ThermoDrill is the development of an innovative drilling system based on the combination of conventional rotary drilling with water jetting that will allow at least 50% faster drilling in hard rock, a cost reduction of more than 30% for the subsurface construction and a minimized risk of induced seismic activity. In order to achieve these goals ThermoDrill will mainly address the following research and development topics: enhanced water jet drilling technology for borehole construction and replacement of fracking; HT/HP crystalline rock jetting and drilling fluids; systematic redesign of the overall drilling process, particularly the casing design and cementing; evaluation of drilling technologies and concepts in terms of HSE (health, safety and environmental) compliance. A challenging project such as ThermoDrill can only be addressed by joint and concerted actions of outstanding experts. This means that the ThermoDrill consortium partners belong to Europe`s leading experts in the field of deep drilling technologies/designs, drilling fluids, simulation, optimal shaping of tools like rockbits, etc. The consortium is already well connected through a variety of long standing research partnerships and wont need great efforts to adjust and synchronize quickly.