V prispevku preučimo in ocenimo organizacijske učinke socialnega kapitala v Upravni enoti Litija. Socialni kapital je večplasten in težje merljiv pojem, zato ga obravnavamo s kombinacijo metod po ...korakih orodja SCAT in z njimi ovrednotimo organizacijske učinke socialnega kapitala (socialni kapital organizacij, socialna mreža organizacij in učinki v prostoru). V sklopu raziskave je bilo izvedeno anketiranje društev, intervjuvanje predstavnikov vozliščnih organizacij in metoda fokusne skupine. Z evalvacijo rezultatov raziskave na fokusni skupini smo izbrane metode ocenili kot primerne za vrednotenje organizacijskih učinkov socialnega kapitala. Na podlagi raziskave ugotavljamo, da je socialni kapital v skupnosti razvit, kažejo se možnosti za izboljšanje strukturne razsežnosti (mreženje, nastanek premostitvene organizacije).
A detailed soil geochemical survey has been performed in the abandoned polymetallic (Hg, Pb, Ag, Zn, Ba) mining and smelting region of Litija, central Slovenia. In an area of 30km2 the soil was ...systematically sampled using a 500×500m grid (120 sampling sites). Two soil horizons (0–5cm and 15–30cm) were sampled in order to distinguish between geogenic and anthropogenic metal sources. A metal dispersion halo has been mapped in a wide circle around Litija. This paper discusses its extension and characteristics, which were established on the basis of metal contents in soil. Data treatment included multivariate statistical approaches (multivariate cluster and R-mode factor analysis), which allowed the identification of two geogenic and two anthropogenic geochemical associations. The main geogenic group of element includes Ce, Cr, Fe, Hf, Nb, La, Th, Ti, Ta, U, V, W and Zr; high contents of these elements are associated with the sand fraction of the Würm terraces. The second geogenic group includes Al, Ba, K, Li, Rb, and Sc; high concentrations of these elements are related to the alluvial sediments of the Sava tributaries. The third geochemical group is partly geogenic and anthropogenic, linking typical elements (Ca, Mg, Sr) of alluvial sediments of the river Sava and some metals (Cd, Co, Cu, Ni, Mn and Zn); the source of these metals is most probably the ferrous metallurgy in the upper part of the Sava valley. The fourth and also the most important anthropogenic geochemical association (As, Mo, Hg, Pb, Sb and Sn) is typical for the areas affected by past mining and smelting activities.
•Sampling and chemical analyses of topsoil and subsoil•Chemistry varies significantly between both sampled soil layers.•Identified two geogenic and two anthropogenic geochemical associations•Geochemical maps of identified groups
The Sava River is the longest river in Slovenia and has been subjected to pollution in the past. Fine-grained channel sediments, which were deposited during the high-water event in July 2009, along ...the river course in Slovenia were sampled at 12 locations in order to determine the content of a large set of chemical elements and assess possible levels of pollution. Sediment samples were air-dried. Two grain size fractions (<0.063 and <0.125 mm) were prepared for chemical analyses by dry sieving. Elemental levels of each sample were determined after aqua regia extraction (1 h, 95 °C) by inductively coupled plasma mass spectrometry. Elemental levels did not exceed the legislation action limit values, indicating that the Sava River recently deposited alluvial sediments are not contaminated with potentially toxic metals. The results show that the chemical composition of the Sava River sediments is comparable to the average composition of stream sediments within Europe. Some light impacts of anthropogenic activities and lithological-driven influential factors to the elemental composition of sediments were observed. Slight As enrichment is possibly a consequence of eroding of slag dumps and As-contaminated soil on Sava River banks and emissions from treated sewage waters. Lead (Pb) is increased in the Litija area as a consequence of historic mining and increased zinc (Zn) and cadmium (Cd) concentrations after the Savinja River confluence because of historic smelting industry in its catchment area. Phosphorous levels in sediments are very likely driven by the emissions from farming and urbanisation. Increased Ba and Pb levels (but still being below the action value) are detected in sample downstream Krško.
Geochemical research was carried as part of the environmental research project at the Geological Survey of Slovenia. The aim of the project was to determine the impact on the environment caused by ...heavy metals released in the environment during mining and smeltingactivity in the area of Litija. The samples of attic dust and soil (0–5 cm) were examined with the view to separate the natural distribution of chemical elements in the environment from the one caused by past mining and smelting activities. Based on chemically analyses we determine two main geochemical associations and their spatial distribution. First geochemical association (Al, Co, Ce, K, La, Li, Nb, Rb, Sc, Ta, Th in Ti) is influencedmainlybynatural source, the second man-made association (As, Cd, Hg, Pb, Sb, Sn in Zn) is caused mainly because of mining and lead smelting.
Extended description:
Smučarji skakalci so tekmovali v Zasavju. Na tradicionalni medklubski tekmi v Litiji se je zbralo 38 tekmovalcev, ki so tekmovali v petih starostnih skupinah. Zmagovalci so ...postali: Kunstej Vinko, Vrhnika, Vehovec Milan - Polet Litija, Rizli Srečo - Ilirija Ljubljana, Djakomeli Franc - Žiri in Malin Iztok - Smučarski skakalni klub Kranj. Marljivim prirediteljem je klub pomanjkanju snega uspelo tekmovanje vzorno pripraviti.
Information:
Litija: veterans' ski jumps.
Original language summary:
Litija: smučarski skoki veteranov.
The influence of mining and metallurgic activities as well as natural conditionson heavy metal pollution in Litija and surroundings was defined.Sampling gridinan area of 30 km2 was determined. Soil ...samples were collected on 120 equally distributed locations in two different depths: horizon A (0–5cm) and horizon B (20–30cm).In total researched area concentrations of considered elements in upper soil horizon exceed the official limit concentration on 24km2, warning concentration on 20 km2 and critical concentration on 1.6 km2. Pollution of bottom soil horizon is several times lower. The highest are contents of lead, mercury and arsenic. Areas of enhanced concentrations include a hill Sitarjevec and hill base Podsitarjevec, where the dumps of mining waste and metallurgic slag are situated. Increased concentrations of heavy metals were determined also in the immediate vicinity of former smelter.
Dentalni keramički materijali kontinuirano se razvijaju zbog svakodnevne primjene u području estetske dentalne medicine. Tako su za dentalnu primjenu posebno zanimljivi staklokeramički (GC) ...materijali zbog specifičnih svojstava zbog kojih se mogu primijeniti kao krunice, ljuskice i mali mostovi. Cilj: Kako postoje mnogo različitih GC materijala, vrlo je važno ispitati njihovu morfologiju i ion-difuzijska svojstva koja utječu na starenje. Materijal i metode: U ovom istraživanju ispitana su dva različita GC materijala – litijev silikat (LS-10) i litijev dislikat (LS-20). Gore navedena svojstva mogu se ispitati s pomoću impedancijske spektroskopije (IS) i pretražnom elektronskom mikroskopijom (SEM). Rezultati: Ispitivanja s pomoću SEM-a pokazala su da je materijal LS-10 teže mehanički obraditi tehnologijom računalno potpomognutoga dizajna/proizvodnje (CAD/CAM). Zaključak: IS mjerenja pokazala su da LS-20 (u usporedbi s LS-10) ima naglašenija otporna svojstva koja upućuju na njegovo bolje svojstvo starenja.
PDF
