65 de ani de cercetare în construcţii, arhitectură şi urbanism
History of NIRD URBAN-INCERC: research in civil engineering, architecture and spatial planning.
More...We kindly inform you that, as long as the subject affiliation of our 300.000+ articles is in progress, you might get unsufficient or no results on your third level or second level search. In this case, please broaden your search criteria.
History of NIRD URBAN-INCERC: research in civil engineering, architecture and spatial planning.
More...
The most numerous Romanian community in the United States of America is in the “Golden State”, California – a state that is a traditional immigration state since the beginning of the gold rush. Officially, there are currently over 60.000 people of Romanian origin established in California, although that number might be much higher because of two factors: undocumented migration and the loss of gradual loss of identity through each generation. Starting from as little as 15-16 families back in 1912 (Alecse, n.d.), Romanians established in California make up 14.5% of the 449,928 immigrants of Romanian origin living in the the United States of America (Voinea, 2014, 62). The aim of this paper is to analyze the current demographic portrait of Romanian immigrants in California, using data from the 2013 American Community Survey.
More...
Beauty adds value to unique geological features because the former is important for tourist emotional satisfaction. Aesthetic properties of geological heritage landscapes (landscapes dominated by unique geological phenomena) should be distinguished from their aesthetic attractiveness. Field studies permit ranging all basic aesthetic properties according to their local importance. The same information allows realizing appearance of the properties, which can be either positive or negative. The aesthetic properties of a world-class geosite representing ancient carbonate platform and diverse karst features, namely the Lagonaki Highland (western part of the Greater Caucasus Mountains) are examined. It is established that the Lagonaki Highland has physical parameters that determine a specific set of aesthetic properties. Three most important aesthetic properties of the studied object are openness, pattern, and uniqueness. These properties match the expected tourists’ idea of beauty, and, thus, the geological heritage landscape of the Lagonaki Highland is characterized by significant aesthetic attractiveness, which is important for tourism development.
More...
У овом раду је извршена анализа топлотних таласа помоћу климатскогиндекса трајања топлотног таласа - Heat Wave Duration Index (HWDI), за Београд и Ниш. На основу дневних максималних вредности температуре ваздуха, одређена је дужина и јачина топлотних таласа. Анализе су урађене за зимску (децембар, јануари фебруар) и за летњу сезону (јун, јул и август). У Нишу је због израженије континенталности забележен већи број топлотних таласа(и зими и лети) у односу на Београду. Од средине 80-тих година топлотни таласи имају већу честину, јављају се у просеку сваке године (или се чак годишње јави и више од једног топлотног таласа), док су се пре 80-тих топлотни таласи просечнојављали једном у две године (Ниш лети), или чак једном у три године (Београд лети).
More...
The paper presents results of the heavy minerals analysis separated of 39 fluvioglacial sediments samples collected at 19 sites in the Piotrków Trybunalski, Radomsko and Przedbórz area. A significant variability of transparent minerals (ca 14–82,5%) and opaque (ca 17,5–86%) have been shown in the set. Comparying to loess around Przedbórz area as to erosion resistance, transparent minerals were divided into five groups. Additionally, carbonates and phosphates as a local substratum index has been added to the classification of a group of 6. Spectra in all groups proved an advantage of Scandinavian detritic material, which was found some link between the resistance and the distance minerals and sediment transport dynamics and their age. Coming up to 40% of biotites and chlorites in glaciofluvial sediments interpreted as synsedimentary aeolian admixtures. Przedstawiono wyniki analizy minerałów frakcji ciężkiej wyseparowane z 39 próbek osadów wodnolodowcowych pobranych w 19 stanowiskach między Piotrkowem Trybunalskim, Radomskiem a Przedborzem. Analiza wykazała duże zróżnicowanie udziału minerałów nieprzezroczystych (14–82,5%) i przezroczystych (17,5–86%). W nawiązaniu do badań lessowych w okolicach Przedborza, minerały przezroczyste podzielono na 5 grup, przyjmując jako główne kryterium odporność na czynniki wietrzeniowe. Do klasyfikacji dodano grupę 6 – węglany i fosforany ze skał podłoża. Wszystkie próbki wskazały na przewagę źródła skandynawskiego materiału detrytycznego, przy czym stwierdzono pewne powiązanie między odpornością minerałów a odległością i dynamiką transportu osadów oraz ich wiekiem. Obecność tylko w nielicznych próbkach minerałów z utworów lokalnego podłoża dowodzi niewielkiej roli egzaracji w obszarze pogranicza Niżu i Wyżyn. Dochodzący nawet do 40% udział łyszczyków w osadach wodnolodowcowych zinterpretowano jako synsedymentacyjne domieszki eoliczne.
More...
Petrographic studies of indicator erratics in glacial sediments revealed the existence of at least two lithotypes of glacial tills (marked S and O/W), differing in source area of moraine material. The older one (S), represented by glacial till in Mąkolice, was deposited by the last advance of South Polish Glaciation in the area. The younger lithotype (O/W) includes glacial sediments of Middle Polish Complex. Among them, two varieties (sublitothypes), probably deposited by separate ice masses (but not ice streams), can be distinguished. These sublitotyphes are clearly recognizable only in the southern part of the area under research. Their relative spatial distribution and petrographic features confirm the validity of the conclusions based on the analysis of the relief, which suggests that the ice-sheet during the Middle Polish Glaciation (Odranian/Wartanian) entered the Piotrków region from two directions.
More...
Water regime and water balance of the Đetinja River were analysed in this paper on the basis of a thirty-year data series on water level and discharge in the period from 1978 to 2008. The analysis of the Đetinja water level showed the mean annual water level of 53 cm in the mentioned period, whereas the lowest mean monthly water levels were in August, and the maximum mean monthly water levels in March and April. The average mean annual discharge of the Đetinja near Šengolj was 5.60 m3 /s of the observation period 1978-2008. The annual value of the average discharges was similar to the annual value of the mean monthly low and high waters. It has been concluded that the Đetinja River belongs to the moderate-continental variance of the pluvial-nival regime. The results of the research have shown that about 5.60 m3 /s of water is formed in the Đetinja Basin with specific runoff of 10.95 l/s/km2. Even though precipitation is not so low and ranges around 875 mm per year, the amount of the river inflow is smaller due to high evaporation of over 60%. Considering that the Šengolj hydrological station has been situated at 8.2 km from the mouth, and the station Stapari stopped working in 2002, there is an opinion that it would be significant to put the hydrological station in the part of the river course, as well as on larger tributaries.
More...
W artykule przedstawiono przykład zastosowania wybranych metod GIS w celu wykazania związków pomiędzy przebiegiem dolin kopalnych oraz współczesnych na obszarze Polski Środkowej. Analizowany obszar w warunkach lądowych kształtowany był już w paleogenie i neogenie, natomiast największy wpływ na obecną rzeźbę powierzchni odcisnęły procesy morfogenetyczne w czwartorzędzie. W opracowaniach paleogeograficznych dla analizowanego obszaru często wskazuje się na możliwe zależności pomiędzy wykształceniem rzeźby współczesnej a jej podłożem, w szczególności zaś sieci dolinnej. W celu weryfikacji tej hipotezy, na podstawie archiwalnych materiałów kartograficznych oraz Cyfrowego Modelu Wysokościowego rzeźby współczesnej, zaproponowano schemat przeprowadzenia analizy z wykorzystaniem zestawu ogólnodostępnych narzędzi GIS. Z wyników przeprowadzonej analizy można stwierdzić, że główne doli- ny rzeczne Polski Środkowej w dużej części nawiązują swoim przebiegiem do kopalnej sieci dolinnej, gdzie związki te najlepiej są widoczne w przypadku dolin największych.
More...
This article presents the results of measurements of the anisotropy of magnetic susceptibility (AMS) of Quaternary sediments collected from 13 sites, located in zones I–IV of glacigenic forms in SE of the Łódź Region. Based on statistical analysis and graphical position of the principal axes of ellipsoids illustrating the magnetic susceptibility tensors, recreated directions of transport for 206 samples, mainly of glacial sediment of different ages and types. The usefulness of AMS analysis in determining the direction of transport in clasts of the till has been proved and also to verification of the directional results of other measurements in the sediments layered.
More...
In the 20th century Wałbrzych and its surroundings was the most prominent area of coal mining in the Sudetes. Nevertheless, in 1997 the mines were closed. An intensive anthropogenic geomorphic cycle commenced there in 1865 and lasted for 130 years. The biggest transformations in landforms occurred in two basins: Wałbrzych and Kuźnice, where a complex of anthropogenic forms was created from dumps and settling ponds, as well as subsidence depression. Among the dominant geomorphic processes related to anthropopressure were anthropogenic aggradation and anthropogenic denudation. Those processes resulted in raising and lowering of the land surface. Their intensity was diverse both in time and space. The average pace of anthropogenic aggradation in the years 1865–1996 amounted to 328 mm/year and was higher in the years 1945–1996 (439 mm/year) than during the period from 1865 to 1944 (255 mm/year). In both basins: Wałbrzych and Kuźnice, there was an increase in the intensity of this process in the years 1945–1996 when compared to the period of 1865–1944. The pace of anthropogenic denudation in the Wałbrzych coal mining area was considerably lower than the intensity of anthropogenic aggradation. During the research period, the land surface lowered, on average, by 66 mm/year, whereas the pace of the process decreased from 75 mm/year in the years 1865–1944 to 57 mm/year in the period 1945–1996. A considerably higher intensity of anthropogenic denudation was noted the Wałbrzych Basin (96 mm/year) than in the Kuźnice Basin (36 mm/year). It was determined that the anthropogenic denudation balance in the in the Wałbrzych coal mining area in the years 1865–1996 was positive (+262 mm/year). When comparing the scale of anthropogenic aggradation and denudation in several coal mining areas (Wałbrzych, Upper Silesia, Ostrava-Karvina and Ruhr), it needs to be emphasized that in the research area the intensity of those processes in the period 1865–1996 was similar and, at times, higher than in the other areas, which results from the preference of cumulating of gangue on spoil tips as the cheapest way of its disposal, as well as from the dominance of caving coal extraction.
More...
The article describes anthropogenic transformations of relief features associated with former economic use of rivers and the changes that occurred in individual sections of artificial canals as a result of their naturalisation. The study was carried out in two river valleys – of the Sumina and Wierzbnik Rivers, which are located in the Ruda River catchment (within the Odra River drainage basin), on the boundary of the Rybnik Plateau and the Racibórz Basin. The use of water in these rivers for the purposes of former grain mills, sawmills and other industrial facilities as well as fish ponds involved the construction of bypasses. The deep erosion gullies recorded in the relief of the Sumina and Wierzbnik River valleys are in fact transformed anthropogenic forms: artificial river channels and old bypasses. In the Wierzbnik River valley, these canals – today dead, but still visible in relief, reflect the technical solutions which were once used to protect ponds from damage during floods. The sections of old artificial canals such as the man-made channel of the Sumina River, are still subject to naturalisation processes, being were later transformed by natural fluvial processes. This is reflected in an increase in channel sinuosity and the development of meanders. It is proposed that the erosive forms described in the article be referred to as anthropogenically determined river gorges.
More...
The paper presents an analysis of water pollution carried out on the basis of the combined physico-chemical Serbian Water Quality Index (WQI) in the Timok River basin. The analysis covers various parameters (oxygen saturation, Five-Day Biochemical Oxygen Demand or BOD5, ammonium ion concentration, pH value, Water Total Nitrogen or WTN, Total Suspended Solids or TSS, orthophosphate concentration, electrical conductivity, temperature and the fecal coliform bacteria parameter) the values of which were calculated for four hydrological stations within the basin. The data obtained at each measurement station were averaged using the annual arithmetic average mean. The annual WQI values were calculated for a twenty-five year period (1990–2014) and they were in the range between 12 and 92, which means that the quality of water varied, ranging from “very bad” to “excellent”. The obtained results were interpreted and the watercourse quality was assessed using the comparison of water quality indicators according to the Serbian Classification of Surface Waters and the WQI method. The worst water quality was recorded in the Borska Reka River. Certain SWQI values are the result of water quality changes caused by wastewater from human settlements, industrial facilities, agricultural sources and illegal waste disposal sites in the basin.
More...
Giant designs traced out by earth mounds could be thousands of years old.
More...
Exploitation, development and primary extraction of the minerals result in release of theharmful substances, e.g. heavy metals, toxic gases, dirt, etc, that are often uncontrolled deposit inthe environment. Those deposited and overlooked substances remain as a heritage and challengefor the coming generations that would involve abundant human, technical and financial resourcesfor the environmental reclamation. The mining activities of the Trepča – RIF Kopaonik has bothpositive and negative influences within the Leposavić municipality, i.e., industrial development andenvironmental degradation. As a result of the mining activities the air, land and water resources bothsurface and underground are severely polluted. The main objective of this paper is to present adverseeffects of the mineral resources (lead and zinc) exploitation and primary extraction on the Ibar Riverwater quality degradation mainly by heavy metals. Since the heavy metals are frequently ingestedby the people through the food chain and given the high toxicity of them they are crucial parametersfor the water quality monitoring practices that should be carefully assessed and controlled. Thus thispaper includes comprehensive analyses of the heavy metals concentration (Pb, Zn, Cu, Cd and Fe)in the Ibar River within the Leposavić municipality.
More...
The objective of this study is to assess the effect of physical and chemical properties of Marl's formations on sediment and runoff rates at different rainfall intensities, based on using field rainfall simulator. For this purpose, first Marl's formations (Neocene's units) were separated to five units including Halite siltstone(NgSiH), Siltstone (NgSi), Mudstone (gy1C), Gypsum mudstone (gy1CG) and Halite clay stone (gy2CH), based on physical and chemical properties. Then runoff and sediment rates were determined in each unit at two intensities (30 and 60 mm/h) using rainfall simulator. Analysis of variance and Duncan's tests showed that Halite siltstone unit has produced the highest amount of runoff and sediment rates and then the runoff and sediment rates of other subunits in decreasing order are as follows: Siltstone, gy2CH, gylCG and gy1C are 5% significant level. The trend of induced runoff and sediment rates at different times showed that in Halite siltstone and Siltstone units the runoff amounts were fixed rapidly at 2nd ten minutes. And, on the other units, the runoff amounts were fixed at 3rd ten minutes and sediment yield was increased rapidly at 3rd ten minutes.
More...
Paper’s main goal is to establish “RHS reference site”, which will be the basis for future classification of river habitat quality in other regions of Serbia. River habitats in Golijska Moravica and Jerma basin have been assessed and classified by RHS method, and reference values are determined (which would serve for the next research of river habitats in Serbia). In Golijska Moravica and Jerma basin semi–natural and predominantly unmodified habitats with high diversity are dominant. If we compare HQA index of Moravica and Jerma with HQA indexes in some European countries (Austria, Germany) of same river type (small, shallow mountain rivers)we can conclude that sites in Moravica and Jerma basin have higher habitat diversity. Within river basins there are spatial differences of HQA index value. River sites in Moravica and Jerma basin have lower values of HMS index than sites in European countries. The impact of individual characteristics on total HQA and HMS score is also determined in this paper.Results of this paper are important for conservation of natural habitats, for river basin management plans and to estimate environmental impact of future water management activities in these basins.
More...