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Magnesium doped TiO2 nanoparticles were synthesized by sol-gel method. The crystallite size of nanoparticles was obtained by X-Ray diffraction (XRD). The photocatalytic activity of magnesium doped TiO2 was tested by photocatalytic degradation of C.I. Acid Red 27 from mono azo textile dyes. Results show that magnesium doped TiO2 under visible light has high photocatalytical activity than undoped TiO2 nanoparticles.

As the water has a vital role in human life and economic development, its shortage can cause some economical, agricultural, industrial and environmental problems. These problems are more prominent in warm and dry regions. Therefore, in such areas the water resources management as well as the treatment and recycling of the mine drainage have the great importance. In the underground and open pit mines, we usually deal with the huge amounts of the contaminated water. In this research, by considering of the statistics...

Punching control is the obligatory part of calculation of shallow reinforced concrete footings exposed to considerable concentrated forces through the columns. Complexity of the stress state in the footing supported by deformable bedding requires a detailed theoretical analysis and experimental research, in order to make correct conclusions and confirm the introduced theoretical propositions. In the paper, the fundamental concept of preparation of experimental tests that were carried out on the test samples – foun...

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 anthropic intervention is strongly felt in T\^argovişte Plain. Here, man has turned most of the forest into land for agriculture, constructions, ways of communication, etc. In the past, in T\^argovişte Plain, oak forests thrived because of the favorable conditions provided by the water-bearing structures situated near the surface and by the plain relief. Today, the forests of T\^argovişte Plain represent nothing else but the remains of the old forest, where the wood vegetation finds however good recovery condi...

The present study deals with the decolorization of C.I. Acid Red 88 (AR88) as a model contaminant from textile industry using sawdust as an adsorbent. The effects of initial AR88 concentration, adsorbent dosage, pH, contact time and stirring rate were studied in a batch mode. The variation of pH from 3 to 10 showed no considerable change in decolorization rate. The desired conditions for decolorization of 84.46\% were obtained to be 20 min of contact time, stirring rate of 400 rpm with 30 g L-1 of adsorbent. Freun...

OMV Petrom S.A. is the largest integrated oil and gas company in Romania, having Exploration and Production activities (onshore and offshore) in Romania as well as in Kazakhstan and Russia. In 2004 Petrom S.A. became part of the OMV Group, the largest oil and gas producer in Central - Eastern Europe. To find, develop and operate new production, an oil and gas company must understand needed infrastructure, business conditions and environmental factors within a given geographic framework. The OMV Petrom GIS group’s ...

In Turkey, approximately 3840 ton/day marble waste originated from several marble producers. But only 20\% of this amount is evaluated in different usage areas. Therefore, waste site selection is an important issue to minimize negative effects of marble wastes in environment. The main aim of this study is to perform site selection process using Multicriteria Decision Analysis (MCDA) and Geographic Information Systems (GIS). The Bucak District was selected for study area since there are many marble quarries through...

The pyrope deposits under the Cesk\'e Stredohor\'\i mountain range have been known for at least hundred of years. The paper just summarized the geological situation of pyrope localities, describes the history of its being exploited and finding of exceptional games. Main attention is devoted to the result of mineralogical research of localities, deposit meaning and perspective of individual localities.

Hydraulic impact hammers are one of the mechanical excavators that can be economically used in tunneling projects under favorable geologic conditions. However, there is relatively less published material in the literature directed to their performance prediction in terms of rock properties. In tunnel drivage projects, there is often the need for accurate means of performance prediction of related mechanical excavators. A poor prediction of machine performance can lead to very costly contractual claims. In this stu...

Increasing of greenhouse gas emissions in atmosphere has caused the raises of global temperatures. Between the greenhouse gases, methane is the second highest contributor to greenhouse gases. Main activities causing methane emissions are enteric fermentation, oil and natural gas systems, coal mining, manure management, rice cultivation and land filling. Methane is released from surface and underground coal mines as a result of production activities. Underground coal mines are responsible for majority of methane em...

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...

For the flotation of complex Cu-Zn sulphide ores; mineralogical texture of ore, liberation particle size of minerals, selection of suitable flotation reagents and the technological properties of flotation machines are very important. The ore to be investigated in this study is complex Cu-Zn sulphide ore taken from East Karadeniz region that have some problems depending on fine liberation particle size. Ore grade is 2.75\% Cu and 6.75\% Zn. In this study, the determination of particle liberation size and the effect...

To allow a truly in-situ elemental analysis, an Australian resource company commissioned the development and building of a down-the-hole deployable ED-XRF sensor. The instrument was designed to be deployable up to a depth of 30 m for drill holes of varying diameters as well as being run in a bench-top mode. Following the development and upon commissioning, the ED-XRF system was investigated in the laboratory for its suitability for use in the Iron Ore industry by using well characterised crushed iron ore samples, ...

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...

ZnO-SnO2 coupled catalyst was prepared by coprecipitation method. Then Ag was loaded on the coupled catalyst by impregnation method. The photocatalytic performance of silver doped ZnO-SnO2 was tested by photocatalytic degradation of C.I. Acid Red 27 (AR27) as a model contaminant from mono azo textile dyes. The crystallite size of nanoparticles was obtained by X-Ray diffraction (XRD). Results demonstrate that silver doped ZnO-SnO2 have shown high photocatalytic efficiency than undoped ZnO-SnO2 at photocatalytic deg...

Geotextiles are used commonly in domestic solid waste disposal sites as a protector filter and separator. Because, sand and silt particles included in waste leachate can fill space of gravels which are using as drainage layers. Therefore, the space of the drainage layer is bunged up with particles and it is decompose. This case is not wanted so the usage of the geotextiles has quite importance in waste disposal sites. In general, geotextile lies between waste and drainage layers and it is used to filtration. In or...

The aim of this essay to draw an outline of the effect of various types of intelligence , paying particular attention to the concept of so called “Emotional Intelligence” with a language teacher’s perspective. Throughout the essay it is aimed to create an awareness of different intelligence capacity of each individual learner in an ideal language teaching environment. While doing this literature on the area has been scanned and case studies have been performed on learners of various cultural and geographical backg...

In Republic of Croatia the Law on State Survey and Real Estate Cadastre regulates the maintenance of cadastre and its gradually adjustment to the real estate cadastre, Currently, is in progress the establishment of real estate cadastre by the new cadastral surveys for 5\% of the Croatian territory. For the remaining areas establishment is planned by individual parcel translation. The most important and difficult precondition is cadastral plan geometric accuracy improvement (homogenization). Pursuant to Law Article...

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 ...

GIS enables spatial or nonspatial data to be transferred or stored into computers and various spatial, numerical, verbal analysis to be made by using this data prepared for this purpose. Although GIS has been used immersely in many fields, it hasn’t been widely used in mining. The aim of this study is to show the applicability of GIS in mining and its benefits for this field. With the help of the software developed in the scope of this study, it is aimed to plan the maps belonging to area of mining licence in the ...

Erenkoy magnesite deposits reside in Eskisehir and Bilecik provinces of northwestern Turkey. Local geology consists of metamorphites of blueschist facies in the base; ophiolitic rocks with mainly serpentinites, peridotites; ophiolitic melanges with a varying range of lithology: cherts, calcschists, blueschist rocks, limestone and on top of all these there are neogene sedimentary units that are mainly consisted of sandstone and clay formations. Magnesite deposits in the area are associated with ultramafic rocks: se...

One of the most important factors in economical development is using the resources efficiently. Land possession has a special importance in agriculture which is one of the main sectors of economy. Land is a limited and needed resource which is impossible to reproduce. On the other hand, many scientists explained that agricultural lands have been reduced day by day. For that reason it is necessary to make every kind of regulations and implantations for efficiently and fertile use of lands. One of the most important...

We propose a skin detection approach that works for digital color images. First, we make an introduction in this image analysis domain, mentioning the most important human skin identification techniques. Then, we provide a pixel-based skin color detection technique for RGB images. Our approach performs the identification of skin regions using conversions between color spaces and formulating a set of restrictions on the color components. Some experiments, proving the effectiveness of the proposed method, are also d...

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 Niğde region, using sodium stearate (SDS) and sodium oleate (SO) as modification agents incorporated with the simulta...

Reconstruction of climate change in Central Asia over the last millennium with an annual resolution was made using geochemical and biological proxy in lake bottom sediments and tree-ring data. We investigated the lake in Central Asia- Teletskoe (Altai), Kucherla (Altai), Baikal, Arahlei (Chita) - and adjacent areas. Cores of bottom sediments were investigated by method of scanning X-ray fluorescent analysis with synchrotron radiation with the spatial resolution of 0.1 mm. It corresponds to the time resolution 0.2-...

The completion string is the most important component in petroleum production system and should be designed and installed precisely, and maintained properly. If the well suffers scale production problem the importance is multiplied. In this study the four major completion techniques commonly used for non-organic depositions is introduced. The subject has been case studied for one of southern Iranian oil wells with inorganic material production problem. The simulations were run using the Prosper software, and were ...

DelPat program makes possible to design of blasting operations and cost estimation with ground vibration analysis arising from blasting. In this study, these applications of DelPat program were used for blasting works in excavation of Boyabat Dam and H.P.P. (Hydroelectric Power Plant) construction and the results were researched extensively. Blasting design was done and the results of planned blasting works and ground vibration measurements were analyzed by use of DelPat. At the end of some shots, 35 events were r...

In this study, global warming’s effects on soil temperature of Turkey was evaluated by analysis of the spatial and temporal variations of the soil temperature data with the help of 3.5D Geographical Information System (GIS) Models. Soil temperature data in 5 cm, 10 cm, 20 cm, 50 cm and 100 cm depths in 74 city centers since 1975 were used. These data were compared with 34 years mean temperature of each city and deviations were shown by using GIS on the map. It is determined that soil temperature values in Turkey h...

Starting from the recently proposed hypothesis [1] on the Moon formation from the ejection of terrestrial mantle material in a heat-propelled jet, triggered by a run-away natural georeactor at Earth’s core-mantle boundary, we estimate the energy losses in the Earth-Moon system, develop dynamics of this process and compare produced value of the heat with known estimations for heat produced by heavy radionuclides fusion in the Earth body. We conclude that the values of heat produced in these two processes are compar...

Biotechnological solubilization of insoluble inorganic phosphate-bearing materials is now accepted as one of the most viable alternative to the traditional chemical methods. Many microorganisms are capable of solubilizing phosphates although this feature is mainly attributed to metabolites such organic acids. During the recent years, we have developed various biotechnological schemes of P-solubilization based on citric acid (Aspergillus niger, Yarrowia lipolytica), gluconic acid (Penicillium variabile), and oxalic...

At present, conventional peripheral computer devices use the latest hi-tech technologies of their industry in order to facilitate PC operation. However, there are many people with severe disablement, who are not able to control their PC in a standard way with the help of a keyboard and a mouse. For the sake of these people it is necessary to find a new solution for PC controlling. One of the possible options would be an analysis of an eye movement, because this human organ is left intact even if the rest of the bo...

In connection with high basicity requirements for current agglomerates it is necessary to keep their iron content. This requirement can be met by increasing the content of concentrates in sinter mixtures. It is important to clarify the limit of the concentrate addition or volume in current sinter charges. For this purpose in view laboratory sintering tests were performed to investigate the effect of sintering ores and concentrates on the agglomeration process and its products. The main charge components were mixed...

In the present study behavior of different footing anchors in reinforced soil subjected to vertical pullout loads were investigated. The plate anchors were considered as footings with their axis vertical and the study was made to plate anchors in cohesive non swelling clays. To carry out these studies number of laboratory tests were conducted on anchors of different shapes (circular, square and rectangular) and sizes in reinforced and non reinforced soil using three different Geosynthetics. It was concluded that o...

Climate change can alter the demand for water, with demands increasing during dry, warm periods and decreasing during cool, wet periods. Climate change may impact a municipality’s ability to provide water to existing customers and their planning for the future. New sources of water may be required, and the evaluation of these new sources should consider potential climate change. Land use activities exert pressure on water resources. To anticipate this change in climate and land use activities and to assess its imp...

The paper presents the evaluation of mine disasters statistics with particular reference to aerological disasters which took place in Polish coal mines from 1945 to 2008. These disasters concern the events which the death of five or more miners working in the mine underground. They were caused by: breakout or outflow of carbon dioxide, methane explosion, tremors and roof falls, explosion of coal dust, fires, heat strokes, water outflows or breakdown of mine equipment. The special attention was paid to fire prevent...

Conveyor belt slip on a driving drum belongs to dangerous accidents that may result in a fire and burning of the rubber belt cover and drum coating under not well described conditions. To prevent such situations temperature of the rubber coating is often monitored by optical methods. We argue that these optical measurements may not monitor the initial phase of belt slipping thoroughly enough and that they cannot predict the incoming danger. We propose to measure continuously the temperature gradient in the rubber ...

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; ...

In this study, the efficiency of EC/UV/TiO2 and EC/UV/ZnO coupled systems, on the decolorization of C.I. Acid Yellow 23 (AY23) as a model contaminant was compared. It was found that for the efficient decolorization of 40 mg L-1 of AY23 using steel304/Al (anode/cathode) as electrodes, with the distance of 15 mm, I = 120 A m-2, electrolyte concentration was 800 mg L-1 for both systems, but pH and initial concentrations of catalysts were 5.53, 800 mg L-1 for TiO2 and 6.29, 650 mg L-1 for ZnO systems, respectively. Th...

Continental intraplate magmatism commonly leads to formation of subvolcanic complexes, for which it is important to characterize their mantle sources. It is necessary to distinguish between the effects on the mantle signature of fractional crystallization and the assimilation processes during magma ascent and its residence in the crust before the final emplacement. Elucidation of these processes requires besides information on Sr and Nd isotopic ratios also detailed geochemical data, especially information on conc...

This study presents an evaluation of the Egyptian quartz deposits from Marwit Rod El- Leqah area in the Eastern Desert of Egypt. These deposits are considered as a potential source of high-purity quartz (HPQ) for use as raw materials for special applications in high- technical industries. Geological description, whole-rock geochemical analyses of representative samples, study of thermal behavior of quartz through differential thermal analyses and measurements of some petrophysical properties of the quartz deposits...

In this study, linear quadratic regulator (LQR) and fuzzy logic (FL) controller are designed for displacement control of elastic structure under seismic excitation. MATLAB®/SIMULINK toolbox is used for the mathematical modelling of the system and controllers design. Controllers are applied to the structure, components of which are assumed that they have standard stiffness and damping coefficient, to suppress seismical vibration. A hydraulic actuator is used as the control device. Dynamic of the actuators to create...

Currently the Electron Probe X-ray Microanalysis (EPMA) is the leading method in investigating of chemical composition of new minerals, which can be detected as small accessories. The results of this method are required for registration of new minerals by the IMA Commission on New Minerals and Minerals Names. Six new minerals were found in other rocks from Baikal region by scientists of Institute of Geochemistry. These morphology, chemical composition and paragenesis were studied with Microprobe JCXA-733, Jeol Ltd...

The article deals with electronic documents based on Universal Business Language (UBL) 2.0 standard in the frame of business processes aimed at logistic. The article firstly describes information flow between small and medium enterprises in B2B environment. Secondly the article is describing identification of set of business documents that small and medium enterprises in Slovakia use for information exchange in business transactions and analyses why customization and localization of UBL 2.0 business documents is r...

The possibility to obtain a low cost petrurgical material by direct sintering of alkaline basaltic tuffs is demonstrated. The parent rock was milled for 10-15 min and the resulting powder was pressed at 100 MPa. The sintering and the phase formation in air and inert atmospheres were studied by dilatometry and DTA, respectively. The phase composition of obtained samples was evaluated by XRD whereas the stricture was highlighted in details by SEM. Some mechanical and thermal properties of the new materials were meas...

Fine grinding involves a large number of parameters in its operation. In this study, the effect of some parameters such as initial particle size, filling volume of the ball and ball size distribution on fine grinding of calcite powders (-200, -150 and -100 $\mu$m) using a laboratory stirred ball mill was studied under wet conditions. Zirconia beads (ZrSiO4) were used as grinding media with 1.0-1.2, 2.0-2.2 and 2.8-3.0 mm. A series of batch experiments using 2 3 full factorial designs was conducted to determine opt...

The environmental burdens, representing mainly the objects after the end of mining activity, heaps and setting pits, old landfills and areas of industrial companies, belong to most serious environmental problems in Slovakia today. The disposal of old environmental burdens is usually solved at the regional level, but some activities regarding the disposal are coordinated from the central level. The article deals primarily with issue of old environmental burdens from mining activity, which is marked by higher level ...

Abrasive waterjet machining (AWJ) with its wide ranging applications, offers a variety of advantages. It is very effective in machining materials which are hard to machine such as steel, composites and stones etc. The efficiency of the cutting process depends on several factors (e.g. hydraulic, nozzle and cutting). Kerf geometry, depth of cut, surface roughness and material removal rate are often used as target parameters. Although, several researchers studied the influence of process parameters on different mater...

With the ever growing urbanisation, crushed stone quarries, which were formerly remote from the cities, have neighboured the cities. On the other hand, the supply of the aggregates that are necessary to be used for the infrastructure of the cities has to be close to the cities. This necessity results with the consideration and evaluation of the crushed stone quarries in terms of their environmental impact. In this paper dust emission measurements of a stone quarry close to the city have been carried out by conside...