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[en] The spatial features of the aftershock sequences triggered by three moderate magnitude events with coda-duration magnitudes 4.1, 5.1 and 5.6, which occurred in Northeastern Italy and Western Slovenia, were investigated. The fractal dimension and the orientations of the planar features fitting the hypocentral data have been inferred. The spatial organization is articulated through two temporal phases. The first phase is characterized by the decreasing of the fractal dimension and by vertically oriented planes fitting the hypocentral foci. The second phase is marked by an increase of the fractal dimension and by the activation of different planes, with more widespread orientation. The aftershock temporal distribution is analysed with a model based on a static fatigue process. The process is favoured by the decrease of the overburden pressure, the sharp variations of the mechanical properties of the medium and the unclamping effect resulting from positive normal stress changes caused by the mainshock stress step.
[en] The paper presents brief description of the old Slovenian regulations and an overview of the new, harmonised regulations in the field of radiation protection training. The most important novelties were pointed out with possible consequences for the implementation of radiation protection training. Some suggestions on how to overcome transitional problems and how to improve training were also given. (author)
[en] Three subnetworks: EIS NEK, RAMS, and ROS form the basis of the Slovenian early warning network, named ROSS, which is under construction. Its aim is to detect any domestic or foreign incident where radioactive material was spread into environment. The system is planned to be completed in five years. (author)
[en] A river channel survey was completed along three reaches (totalling 14.3km), i.e. an unregulated stretch and two regulated reaches (with reduced flows) of the Soca River to assess the spatial pattern of CGU type, size, hydraulics and distribution. In addition, one regulated reach was re-surveyed at different discharges to investigate the dynamics of CGUs and their relationship with flow. CGUs were classified and mapped using visual assessment and physical measurements of the hydraulic characteristics (velocity and depth) in each CGU. The effect of flow regulation on the hydraulic character of the river becomes apparent by highlighting differences in the types of CGUs present between the regulated and unregulated reaches. Reduced flows from river regulation also significantly reduces the size of CGUs, alters their hydraulic character, and affects the longitudinal distribution of types by creating greater habitat fragmentation. Hydraulic preferences for spawning habitat of marble trout (Salmo marmoratus) were obtained from previous research. The hydraulic character of CGUs were analysed at different discharges and combined with the hydraulic preferences of the species to evaluate the impact of flow regulation on habitat availability. Analysis shows that intermediate measured flow provides increased spawning habitat availability in the chosen reach for this target species.
[en] Uranium mine Zirovski vrh (Rudnik urana Zirovski vrh-RUZV) was the only working uranium ore mine in Slovenia. It was constructed to provide uranium concentrate for the nuclear power station in Krsko. Especially due to the uneconomical exploitation of the ore deposit, the government of Republic Slovenia on the 18th of October 1990 issued a decree on temporary shut-down of exploitation and investigations of uranium ore in the uranium mine Zirovski vrh along with the immediate stop of production. After that the exploitation was never started again. The law on definite closing down of the uranium mine exploitation and on rehabilitation the effects of mining on the environment was issued on the 24th of July 1992. RUZV became a public owned establishment responsible to carry out complete and permanent closing down of uranium mine
[en] Spanish electricity market has served as a basic model in the construction of the electricity market in Slovenia. However, in the final phase of its development additional solutions were adopted from other European and worldwide electricity markets. The electricity market thus obtained is in some aspects more complex and in others simpler with regard to the original model. This article describes two of the new solutions on the Slovenian electricity market: the introduction of numerous standardized electric energy products (Band, Peak, Off-peak, Hourly power etc.) to be traded on completely separate markets, and the introduction of continuous, real-time type trading on all of them but the hourly market.(author)
[en] Slovenia is very rich with water. Sava river basin is the biggest one in Slovenia and it covers 53% of Slovenian area, which means approximately 10760 km2. Because of its importance in year 2006 water balance analysis of Sava river basin under the name SARIB was done. In the SARIB project model Watbal was used. We had a lot of problems with calibrating it via standard way using Excel's Goal Seek function in combination with method of trials and errors. Because of that we developed a new algorithm PETTON in Matlab for automatic, fast and reliable calibration of model Watbal. The new calibration results were better and model Watbal was more successful in prediction. In this article we will briefly present the main ideas of optimisation and calibration, model Watbal and algorithm PETTON. At the end we will present comparison between SARIB results and new results, which we get by using PETTON.
[en] The paper addresses the impact of electricity market opening in Slovenia on customers. The Slovenian electricity market started with electricity market opening in April 2001. All customers with the connecting power of over 41 kW are eligible. This includes the opening level of about 65 percent of consumption with 8000 eligible customers and over 580 players at the market. From January 2003 the Slovenian market is open to foreign players, as well. The first experiences in the new power system environment are positive. Evaluated satisfaction of the customers has shown that many promises have been fulfilled. In accordance with the new EU Directive no. 2003/54/EC some corrections of market framework have to be made in the coming months. (author)
[en] Results of radon research in Slovenia in last two decades are reviewed, with emphasis on radon in soil gas and outdoor air. Track etch detectors were exposed all over the country, in boreholes at a depth of 80 cm and in outdoor air at a height of 150 cm above ground. Arithmetic mean values of radon concentration in soil gas were 40.9 kBq m-3 and 45.1 kBq m-3 for two consecutive years, and in outdoor air, 15.3 Bq m-3 in summer and 14.4 Bq m-3 in winter. In both cases, higher values were found in the south-west part of the country covered by carbonates and crossed by a number of tectonic faults. (author)