Browse

An analysis of the factors that affect implementation of investment plans for a construction of engineering structures in coastal area is presented. The report attempted to clarify the legislative and administrative problems in the design and implementation of quality investment projects. There are a number of generally valid requirements and prerequisites for projects that directly affect their level of efficiency and effectiveness. There is need a profound analysis of the influence of real political, economic, s...

The public-private partnerships are a very common form, which is used to realize the various types of public projects in case the public sector does not have enough financial means or knowledge to realize such projects without the presence of private sector. The proper legislative background is required to apply these long-term contractual relationships between public and private partner. In Slovak Republic the situation is moving forward together with first extensive PPP projects, which were realized in Slovakia ...

The greatest reserves of hydrocarbons on the territory of the Siberian platform confine to the Vendian terrigenous collectors. The paper is dedicated to the analysis of the lithological factors, influenced the formation of these reservoirs. The void space of the sandstones was examined on the basis of the detailed petrographic and electron microscopic studies. The analysis of dependencies of the filtration-capacity properties and the structural and material characteristics carried out. Established that the sedimen...

GPS (Local Positioning System) technique is still the most applied positioning system in practical applications and engineering projects in our country and in the world. Since GPS measuring is commonly used in every kind of geodesic study, heights used in practice can be obtained easily in demanded accuracy from GPS. However it is necessary to determine geoid which had enough precision in working place. Because geoid is a natural relation between the ellipsoidal height (h) determined by satellite and orthometric h...

The Low Resource Consumption Buildings and Construction by Use of Life-Cycle Assessment in Design and Decision Making (LoRe-LCA) project aims to coordinate activities regarding the application of life-cycle assessment (LCA) in the European construction sector, focusing on comparing and improving the functional units used for LCA for whole buildings, improving the possibilities to compare results for different alternatives during design stage, and for comparison of results for different buildings. The project focus...

Magnetic susceptibility mapping and rock magnetic characterization of topsoils from southeastern Bulgaria near the Black sea coast was carried out for delineation of the anthropogenic pollution. The presence of strongly magnetic parent material (volcanites, volcanoclastic sediments) and various soil types (Vertisols, Luvisols, Chromic Cambisols, Planosols, Fluvisols) were taken into account by using normalization of the field susceptibilities to the median susceptibility value, calculated separately for each soil ...

The tectonics of the Turkey is dominated by the collision between the Arabian and Eurasian plates. In this collision, the Bitlis Zagros Suture Zone is the most prominent tectonic structure. There exist metamorphics of the accretionary prism. Tectonic forces of the study area can be effective on thermal structure and mantle flow. Particularly in such areas, the magnetic anomaly is imposed by the thermal zone. For this purpose in this study, by investigating aeromagnetic anomaly of the Bitlis Zagros Suture Zone, we ...

Qualitative picture of the degree of environmental pollution in Sofia city was obtained using magnetic signature of road dust. Collection of 117 samples was studied by magnetic methods and SEM microscopy. The most polluted points are central part of the city and main crossroads. Both irregular-shaped and spherical particles of high-iron content are responsible for the enhanced magnetic signal in the road dust.

The main goal of a small scale stream sediments geochemical survey is to identify the promising areas for the further exploration in next steps of geochemical exploration. To achieve the target the thresholds value of each interested element within the geochemical sample must be specified at the first step. In this research it is attempted to use the raw geochemical data after pre-processing to delineate the anomalous area within the Khusf 1:50000 sheets which is located at 35 km west of Birjand at the south khora...

Research presented in this paper is a part of our ongoing work on GeoNis framework. GeoNis is framework for interoperability of GIS applications in local community environment. In this paper we introduce an approach for automatic generation of objectoriented model for handling ontology instances stored in relational databases. Central part of this approach is an algorithm that transforms application ontologies into appropriate object-oriented model. Using this approach we have developed a Data Access Layer Generat...

The industrial importance of calcium carbonate as a filler in composite materials such as plastics, textiles, rubbers, paints, pigments and paper is well recognized and the application in the polymer industry is increasing. Therefore, surface modification is a key process in functional calcium carbonate powder preperation. In this study, surface modification of calcium carbonate particles, obtained NiДџde region, using sodium stearate (SDS) and sodium oleate (SO) as modification agents incorporated with the simult...

The native gold containing high silver, extracted from gold bulk of few kilograms, was comprehensively researched. The studied through the optical microscope gold samples seem homogeneous and their fineness varies from 200 to 500 ppm. The fineness deviates from the mean value about В±20-30 ppm, however zonation is not observed. When the gold samples were dissolved in nitric acid, only silver was released into solution and gold remained in the insoluble remainder as the spongy-porous skeleton, consisting of pure go...

Alternative toxicological tests (microbiotests) are those that reduce the number of animals in a toxicity test, refine procedures to make them less painful or stressful, replace animals with non-animal systems, or replace one animal species with another that is lower on the phylogenetic scale. A number of useful alternative methods have been developed and accepted for the evaluation of the potential toxic effects of chemicals products and environment samples. The literature analysis concerning the use of microbiot...

Middle and Upper Jurassic deposits from the area of Piatra Craiului are part of the Piatra Craiului Formation [5] and are made up of deep facies appearing at the surface, especially on the western side of the massif. On the eastern side, these facies appear sporadically, thinned due to tectonic effects. Also, they may be accompanied aby lowdepth carbonatic facies corresponding to the shelf. Lithologically, it is possible to highlight microconglomerates, quartzitic gritstones, silts, reef limestone, brown-reddish l...

The Yarpuz (Kakliktas) bauxite deposit is located in Antalya region southern Turkey; 35 km to the south of Seydisehir and 180 km to the north of Antalya. It is one of the bauxite deposits with the highest silica modulus (Al2O3\%60.26 /SiO2\%1.74=34.63) outcropping in the Central Taurus Mountains. The Upper Cretaceous Katrangedigi formation forms the basement and, comprises carbonate rocks. The bauxites were deposited in the paleo-karstic depressions developed at the upper part of the KatrangediДџi carbonate and, w...

The mineralogical and technological study of gold ores and dressing products demonstrate the persistence of both the ores and products of their dressing, especially Floatation concentrates. The gold loss in the tails of Floatation beneficiation are primarily associated with the smallest size fractions less than 20 microns, which make up to 70\% of the total lost gold in the Floatation tails. It is obvious that increasing the extraction of gold by Floatation is directly linked to the development of the technologica...

The main Romanian lignite reserves are located in the south west of the country, in Oltenia coal basin and could be efficient exploited in open pits. After a briefly geological description of lignite deposit from PeЕџteana open pit, the paper deals with the sand and gravel layer located as overburden of lignite seams. After the granular analysis, the technique of modeling the gravel layer and the reserve evaluation, the economical end environmental implications conclude the paper.

With contemporary development of computer techniques has been enabled execution of work by GPS satellite system in mining operations which GPS system serves for collection of data related with mining operations and explosive storage facilities. Today, these computers are part of standard equipments in the most part of mining operations. These systems offer a possibility of connection with tachograph, readers interested in the data of mining operations, measurement of coordinates by handheld GPS, transfer of data i...

The test network of geodetic base is located at the territory of the park Jelenovac in Zagreb. The test area is rather unstable and suspected of ground subsidence. The geodetic base has therefore been renewed and established for the purpose of monitoring and analysing vertical movements of the geodetic control network. The state of the existing geodetic control points has been recorded and damaged points have been renewed, and destroyed points stabilized anew. The stabilization of points has been made on concrete ...

Specific statistical methods can be used when monitor the degree of water pollution in a target zone. The purpose of usage of time series properties is to understand the driving forces and structures that produce the observed data and to fit the data into a model and proceeds them to forecasting, monitoring or even feed back and feed forward control. The essential difference between modelling data via time series methods and using the process monitoring methods is that in time series analysis the data points taken...

The Act on protection and conservation of cultural goods has been in force in the Republic of Croatia since 1999. It defines types of cultural goods and measures for their protection and conservation. The main authority for protection and conservation of cultural goods is the Ministry of Culture. This paper will describe geodetic works on saving a protected cultural monument. Results of the analysis of movement measurements over a longer time period will give insight into the real conditions and enable experts to ...

A new practice has started to be implemented in Kosovo, in this south-eastern region of Europe, and it is 24-hour monitoring of vehicles and facilities with strategy for the development of mines in Kosovo with the help of GPS system. These vehicles and static facilities (the explosive storage) have a sophisticated system, which enables a precise monitoring of movements in and around them. Global Positioning System (GPS) currently presents the greatest achievements and application in the communication technology. B...

Floods are river basin wide phenomena and they often create common problems with locally varying intensity. The flood disaster management is highly dependent on early information and needs forecasts and data from the river basin as a whole. The starting point for flood risk management planning is the assessment of flood risks, based on the information about the river basin and floods in the past. The next step is developing strategies for reaction when flooding events are prognosticated, and evaluation of these st...

Fold axial plane traces and schistosity in the high temperature-low pressure regime PreCambrian rocks in Arkansas River region preserve the effects of a succession of 5 FIA trends (foliation intersection or inflection axes in porphyroblasts). Similar fold axial plane trace measurements in high temperature-medium pressure regime Palaeozoic rocks in Vermont preserve the effects of only the youngest two NNW-SSE and NNESSW trending FIAs of the 5 sets that developed in this region. The other three have no equivalent fo...

The Lake Paliastomi is located in the extreme western part of Kolkhety Valley bordering the Black Sea coastal area.The paper deals with the analyses of the materials collected through the field and theoretical studies prove, that the natural landscapes of Paliastomi and its neighbouring wetlands were the subject of the strong impact of anthropogenic factors.

Form time to time real estate owners have problems from each other because of demanding access right from neighbouring real estate which has no bordering to cadastre or reconstruction road. Neighbouring real estate owner doesn’t want to allow the others who want to go their fields, lands or gardens with their vehicles and equipments. According to the Turkish Civil Code Article 747, landlord who doesn’t have enough way from his land to the general road may pay in consideration of demanding an access right from ...

In process of pig iron production besides main product, pig iron, also secondary products are formed, that have character of secondary raw materials and industrial wastes. The most abundant secondary product originating in the process of pig iron production, is blast furnace slag, its occurrence is about 300 to 500 kg for one ton of pig iron. Blast furnace slag originates from melting of gangue parts of metal bearing materials, slag forming additions and coke ash. Its chemical, mineralogical and physical – chemi...

The demands of the Romanian contemporary society are indissolubly related to the rapid development and modernization of the infrastructure. At the same time, the scientific research is moving towards the new directions imposed by an increasingly dynamic society and economy. In this context, inter- and trans-disciplinarity are required by the need to prepare new types of approaches, methods, techniques and technologies, to be able to answer the social and environmental impact produced and molded by the infrastructu...

In this study, a singularly perturbed convection-dominated diffusion equation is solved by using a non-polynomial spline method. An example is solved to assess the accuracy of the method. The numerical results are obtained for different perturbed values ($\epsilon$ ) of equation. The results indicate that non-polynomial spline method is effectively implemented. It is seen that results are compatible with exact solutions and consistent with other existing numerical methods.

In this paper, we have discussed a third-degree non-polynomial spline solution for the numerical solution to nonlinear boundary value problems (BVPs) and compare other metods. Two numerical examples are given to illustrate the efficiency and performance of the method. The method gives accurate results in both the linear and nonlinear cases.

Most crude oils include paraffin that crystallize in low temperature to create cluster, precipitated in the form of sediments and making the free flow of oil more difficult. Such situations take place mainly in the autumn-winter season. Created sediments settle on the surfaces of mining equipment, pipes and reservoirs. This situation cause exploitation difficulties connected with increased flow resistance and in consequence decrease or lack of oil flow in pipelines. In order to protect of pipes and machinery again...

Numerical models which are used for determining deformation are created as a simplified form of physical reality and they are usually defined as force or timedependent. The deformation is investigated by static, kinematic and dynamic models. From these models, dynamic deformation model describes the relationship between the forces and the changes of forces depending on time and the external factors which cause deformation. The deformation in an area is determined by evaluating together the theoretical dynamic mode...

Various heavy metals contained in fuel are released to environment at fossil fuels use. Mercury has come to front of public interest recently. The North West Bohemia region is an area with high potential concentration of Hg emission sources (open pit brown coal mines) and large combustion facilities (power and heat stations) combusting fossil fuels. Mercury is taken for one of the most environment loading matters because its stability and bioaccumulation potential of itself and its compounds. More detailed regulat...

Major environmental problem worldwide, air pollution gains our particular attention, especially in the case of industrial emission. Among such concerns, SO2 generated by combustion flue gas requires profound analysis, mostly because it is known to cause acid rains. In time, many mathematical models gave both quantification and prediction of pollution level. This work aims to compare several SO2 dispersion equations (i.e. Sutton equation, Bosanquet-Pearson equation and diffusion equation, derived from the plume dis...

The great reserves and also convenient conditions for the use of coal represent very strong arguments for the justification of private capital investment in the energy sector of the Republic of Kosovo. The trend of living standard increase, development of industry and market demands within the South-East Europe pose the need for the construction of new power generation capacities. Therefore, the purpose of this paper is the introduction of possibilities for the coal supply of generation capacities up to 2000 MW in...

Chlorine disinfection is a generally used process for eradication pathogenic microorganisms from drinking water to prevent water-born diseases. It has been demonstrated that natural organic matter (NOM) in raw water may react with chlorine to form disinfection by-products (DBPs) which are carcinogenic or mutagenic. The occurrence of disinfection by-products (DBPs) in drinking water has been an issue of major concem during the last years due to their adverse health effects. The development and optimization of analy...

Recent trends in the ornamental industry have increased the use of granite for various decorative applications owing to its outstanding mechanical properties and multicolor. Machining of granites with conventional systems is costly. Therefore, new technologies are being developed for cutting and processing applications of granites. Abrasive waterjet cutting (AWJ) is one of the non-traditional machining processes that have been used extensively in various industrial applications. It enables to cut materials being h...

The aim of this work is the optimization of sinter-crystallization regime of a glassceramic from a municipal solid waste incineratior (MSWI) bottom ash. The parent waste was melted at 1400oC, milled below 75 $\mu$m and the obtained glass powders were pressed at 100 MPa. The optimal temperature for sinter-crystallization was estimated by DTA, dilatometry and XRD. Subsequently, the degrees of sintering, obtained at different heating rates (between 2 and 40oC/min) and 1 h step at 950oC were estimated by the linear sh...

This paper presents an algorithm for construction of a patch from a set of points in 3D space. Usualy, such set of points is a subset of surface points obtained from, for example, a 3D model or a terrain. To construct the patch, the points should be connected into a triangular mesh. Because the patch can have various characteristics the connection of input points in the resulting triangular mesh is rather difficult. The algorithm starts with construction of a 3D convex hull from given set of points. The 3D convex ...

Being inherited from 20th century and having increasingly negative effect on our lives, environmental problem had became inevitable part of our life. However employmentand development-related issues had led several governments to defer the subject. Countries including United States, China, India, Brazil, Turkey and Australia are not eager against international environmental regulations. Private sectors of several third world countries may threat governments and non-governmental organization to cease their business...

A man-made structure or natural phenomena like crustal movement, vertical land movements, subsidence determination, etc. is subject to deformations due to forces on them. Deformations of a structure require rigorous analysis to reflect significant movements. In general, deformation analysis relies on the reference network that is set outside the deforming area so that a comparison could be possible. However, a geodetic reference network is itself subject to movement. Therefore, the stability of the reference netwo...

Organic matter of lignites from five Tertiary deposits in the Czech Republic was studied and the general goal was to characterize a series of different coal lithotypes in relation to depositional environment from the viewpoint of organic petrology and geochemistry. Coal samples were chosen to cover various lithotypes: xylite rich coals, matrix coals, liptobioliths, and sapropelic coals. The samples differ in ash, sulphur, carbon, hydrogen, oxygen and volatile matter contents, and calorific values. Xylite rich and ...

Phosphorus (P) waste output, notably in the dissolved form (DWP), is a major concern for many fish culture operations. Fish are believed to excrete DWP via the urine but this aspect has never been examined in detail. A better understanding of P utilization and renal P handling of fish could aid development of nutritional strategies for the management and reduction P waste. Rainbow trout were fed high corn gluten meal diets, supplemented with dibasic calcium phosphate, containing increasing P levels (0, 75; 1, 15; ...

System FOTOM 2009 on NetBeans platform. On the Department of Informatics FEI V\vSB TU Ostrava FOTOM is developer syst\'em FOTOM, which serves the digital image processing. The program is created in the programming language C++. Originally the system was developed as a purpose-built program with no public API for other future modules. For this mason we decided to create a whole new generation system based on modern language and built on a suitable platform, enabling full modularity of the system. This calls for a r...

Gouda Nature cheese maturation is the most difficult operation of the whole technological manufacturing process. This paper shall present some of the physical chemical modifications that occur during this kind of Gouda cheese maturation, and the value of these parameters at the end of the validity period.

A detailed investigation of physical and chemical properties of pyrite cinders from sulfuric acid production has been carried out by employing variety of analytical methods and techniques, including ICP-MS, XRL, XRD, M\"ossbauer Spectroscopy, SEM-EDX, SQUID, TGA, etc. The study is focused on the investigation of the content and distribution of about 50 micro- and trace elements in magnetically separated fractions, and among/within individual particles. It has been found that many heavy metals exist in easily avail...

Ambient particulate matter contains numerous organic species, including several polycyclic aromatic hydrocarbons (PAHs) that are known or suspected carcinogens. Atmospheric particles were collected using low-volume sampler on glass fiber filters among August 2007-June 2008. The study area is under the influence of heavy traffic. Filter samples were extracted with petroleum ether /n-hexane by ultrasonic agitation, concentrated, and measured at trace levels using gas chromatography–mass spectrometry. The method wa...

In this study, some attention will be paid to the recent scientific and technological developments in waste stocks remediation. The consideration will be focused on this still not developed area of practical application of polymers as a first step towards remediation of polluted waste stocks. Some function and utility of organic polymers will be offered, which behave similarly to those naturally present in soils that are to be considered as potential substrata for remediation and rebuilding of depleted waste stock...

Fly dusts creates by steel and cast iron melting. Their properties depends on a type of melting aggregate. For steel it is first of all a fly dust from electric arc furnace, its chemical composition is depended on the kind of produced steel. A cupola furnace is the most used furnace for cast iron production. Fly dusts from steel and cast iron production contain some part of FeO that is reducible in a cupola and blast furnace. It is a very fine material and it has to be pelletized or briquetted before its next use....

The Makran coast of Iran is exposed to the long waves generated in the Indian Ocean. The coast experienced huge waves induced by tsunami and cyclone during the past decades. Using the impact of the past events we present potential inundation areas for the great waves on the Makran coast. Based on the value of long wave height, three flood zones are specified on the inundation map. The first zone associated with no considerable inundation on uplifted rocky shore, the second zone would experience up to a few kilomet...