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The paper deals with the removal of chromium from aqueous solutions based on the process of biosorption. The select ed biosorbent is the fungus of Fomitopsis pinicola . The laboratory experiments study the kinetics of the biosorption process, the effects of grain-size, activating agents, length of th e activation process and physical conditions which play an important role in the process optimization. Among the factors that influence biosorption there are, particularly, the pH value, temperature, number of revolut...

Researches of ilmenite reduction kinetics defining intensity of process course are carried out for many years. Main characteri stic is concentrate reducibility degree, characterizing process speed in concrete conditions. Ilmenite reduction process is very complicated, and its speed depends on many factors - oxides nature, temperature and degrees of concentrate grinding. Iron complicates ilmenite concentrate use in its chlorination process for obtaining titanium tetrachloride - an initial product for obtaining of s...

Tin selenide SnSe was synthesized from tin and selenium powder precursors by high- energy milling in pl anetary ball mill. X-ray diffractio n analysis confirmed that an orthorhombic tin selenide SnSe phase was formed already after 4 min of milling. 119Sn Mössbauer spectroscopy documented the values of SnSe isomer shifts corresponded to Sn in the oxidation state II. The size and morphology of tin selenide particles were studied by specific surface area measuremen ts, and transmission electron microscopy. Specific ...

The paper deals with the study on pyrite liber ation from talc raw ma terial. The material comes from deposit nearby Gemerska Poloma village (Eastern Slovakia). A lumpy material was subjected to crushing, grain si ze and float-sink analyses. Heavy and light products were also assayed. XRD study of sel ected products of float-sink analysis was carried out. Thus, it was found that iron and sulphur concentrate in a grain size classes of 0.5-3mm, above all in 1-2mm. The highest mass yield of heavy product was attained...

This paper is focused on the sulphur and su lphur forms distribution in the Antonin coal seam at Jiri and Druzba open-cast mines in the North Bohemian brown coal basin, in the Czech Republic. Briefly describes the basic geological structure of the area, deals with sulphur forms, sulphur genesis, chemism, coal sampling and analysis from the exploration boreholes. Overall 32 coal samples were precisely analyzed. The results of this analysis were used for the construc tion of the graphic outputs. Based on these resul...

Construction Sand production is done mostly by small mining companies and, because its price is distance dependent, it must be mined as near as possible to its final use, the cities, causing locational and environmental conflicts with economic and socio- environmental impacts. The Piranema Sand District is no exception. Located at 70 km from downtown Rio de Janeiro city, Brazil, its 70 small mining companies are the main suppliers of the Rio’s Metropolitan Area, w ith 90% of its demand: a critical success factor...

The existing groundwater source for the public water supply of Be čej city in Serbia tapping groundwater from three water-bearing horizons over 15 wells with summary capacity of 100 l/s. Near the public water source of Bečej exists groundwater source for industry with capacity of 12 l/s which tapped same horizons. In the coming period is planned to increase summary capacity of this groundwater source up to 57 l/s. Also, the increase of summary city’s s ource capacity is planned for 50 % in the next few years, ...

The paper presents some results of research and development, obtained by the institute and its partners, to promoting advanced technologies and equipment for wood waste recycling, in order to obtain the ecological compost used for developing a sustainable and ecological agriculture. At the beginning, there is presented mobile wood chipper equipment, for fragmentation and shredding of wood branch es resulting from activities of grooming / trimming of trees and shrubs in agricultural areas, orchards and forestry. In...

The Izmir-Ankara-Erzincan Suture Zone repr esents the relicts of the Late Mesozoic- Early Cenozoic Neotethyan Ocean in N Turkey. This suture zone marks the boundary of amalgamated S Eurasian and N Gondwanan continents and is characterised by the presence of ophiolitic melanges and ophiolite s. Two different ophiolitic melanges may be distinguished in this zone based on their metamorphic grade. Unmetamorphosed melanges are widespread along the suture zone whereas metamorphic melanges occur only at a structurally lo...

Well organized ventilation systems and air distributions of the school buildings in many countries still appear to be a t opical issue. A lot of various investigations indicated that IAQ problems appear not only because of low ventilation ra tes, but also in cases when the location of exhausted and mainly supply jets is not appropriate. The main motivation is the select of most efficiency air ve ntilation systems and di stribution schemes to improve IAQ for school buildings. The model of university classroom for p...

Quantitative risk assessment is a procedure fo r estimating the probability of an adverse health effect occurring in a local population from some events and the probability of the occurrence of the event. The risk analysis pr ocess consists of hazard identification, risk estimation, risk acceptability, risk evaluation and risk management. In this research, after extracting the risk assessment components; an algorithm has been drawn in order to analyse the risk assessment and to esta blish the framework for risk an...

The paper deals with some factors influencin g the values of sandy soils shear strength parameters, obtained by direct shear test (DST). Influences of density, shear area changing and number of specimens on the test result of clayey sand (SC) and sand with some fines (S-F) are examined. Influences of the density on the values of sandy soils shear strength parameters will be introduced in the paper by the tests with density index 6 . 0 ; 3 . 0=DI and 0.9. Influences of the shear area changing on the values of sandy...

The northeaster part of the Czech Republic is since the early 19th century associated with underground coal mining. This activity brings economic benefit in addition to changes in the landscape – soil depression followed by habitat destruction. Flooded mine subsidences are an example of such degradation of native plant and animal communities, biodiversity dec line and wetland and aquatic ecosystems establishment. For a long time, these ecosystems were considered worthless and unproductive [10]. The aim of the va...

The biotechnological methods have wide application area in the remediation of heavy metals from the waste waters. This study presents the results of the biological-chemical activation of coal waste from the Cigel deposit (Slovakia) by selected species of microorganisms, as well as: Aspergillus niger, Asperg illus clavatus, Penicillium glabrum and Trichoderma viride . The quantitative maceral composition has been investigated. The complex maceral analysis shoved that microorganisms preferentially disrupt the struct...

This item refers to the cent re-peripherical model due to Paul Krugman (1991) with all its merits in grounding of the economic crowdings, and which at the same time meant also the arising of a new field in the economic theory, known as “The New Economic Geography”. They also criticized it for the symmetry of the transport costs of the industrial and agricultural products. These criticisms could be avoid by improving the model, so as it is trying in this work. Simultaneously, the achieving of an informatics pro...

At present paper the results of chemical and radiochemical analysis of the environmental samples collected from the Shu river valley, are shown. The samples were collected along the Shu river from Tokmak town to Shu town during the field expedition, conducted in October, 2008, and in July, 2009. The main ions and uranium decay radionuclides in water increase up to maximum concentration in Tasotkel reservoir. The biogenic elements analysis showed their typical concentration for arid zone. The water contaminations w...

This study presents the relationships betw een the wet deposition fluxes of chemical species, their concentrations and the rain intensity in the precipitation events which took place on a) November 10 th, 2007 b) September 08 th, 2007, 29 sequential rain samples were collected in those three precipitation ev ents in Istanbul-Turk ey using a sequential precipitation sampler. Temporal variation of chemical species were investigated during the events and found that the variability of ion concentrations were similar t...

Although the buildings of the Universidad de Concepcion (UdeC) stood up well structurally to the effects of the 8.8 magnitude earthquake on 27 February 2010 in Concepcion, Chile, diverse damage was generated in their non-structural elements. Due to the large number of university buildings (over 100 on the Concepcion Campus alone) and the need to start classes on 5 April, numerous simultaneous repair projects were generated. These were done within the national post-earthquake context, UdeC culture and timing. The o...

The work deals with reconstruction of family house on the part of energy for heating need. The essence has been to comparise individual alternatives, which are possible to realise in judge house. In the first part of work is the attention devoted to object describing and to heat loses values before and after the measurements. Than are particularly characterized alternatives of heating, their annual costs for heat production and for amount of fuel, invested costs and the portion of invested and overall costs. In th...

A crisis is referred to an unplanned event emerging from the internal or external environment of an organization, region, or country which can disrupt operations, threaten people physically and mentally, Crises often have negative consequences including a decrease in demand and revenues, rising costs, the deterioration of normal conditions. Meanwhile, some of them may also offe r some opportunities for companies. It had both negative and positive impacts although its benefits were often overlooked. But it becomes ...

The aim of this paper is to review and identify the correlation among students’ anger, aggression and students’ performance. These concepts also have an important role in one’s daily life. This research aimed at exploring the relationship among students’ anger, aggression and students’ performance i nventories. To this end, a research has been conducted on the students of vocational st udies (n=184) in Istanbul. According to the results, a weak relationship (r<0,38) was revealed between students’ anger...

As far as technical education is concerned the lack of motivation plays a significant role in terms of academic achievement and failure within the concept of language learning and teaching. In order to supply a valid source of reference for the language teacher, we, at the V ocational School of Technical Studies, have conducted a survey to find out the effects of emotional and social skills of the learners, paying particular attention to the academic achievement, emotional intelligence and social skills and found ...

The aim of this paper is to discuss the correlation betw een students’ creativity and students’ performance at vocational studies. The research seeks to define educational performance by considering multidimensional nature of creativity. This research aimed at exploring the re lationship between self-esteem and academic performance by using creativity inventory. To this end, a research has been conducted on the students of vocational studies (n=312 ) in Istanbul. According to the results, a weak relationship (...

This publication presents th e assessment studies of two important characteristics, limiting the utilization of the geological envi ronment for various pu rposes, especially construction. The first is the character of the pre-quaternary bedrock, other is the rock workability. Character of the pre-quaternar y bedrock and its depth is important primarily for the complex foundation engineering. They carry the greater load caused by the weight of the structure itself. Therefore, it is often necessary to carry the weig...

The paper presents a solution for developing the water body in an enclosure arranged with engineering works from the Danube meadow in Giurgiu county. The solution is applicable in the conditions of a half captive aquifer taken from the Danube Specific for this solution is the type of hydric excess with a higher intensity and duration than on the border zones. The experimental field has a surface of 4 ha a nd is located in conditions of alluvial soil with a clad texture. The arrangement has abso rbing pipes placed ...

The environmental protection expenditures have started to play a significant role in the Romanian economic development policy only since the 1990s, both in enterprises and public authorities. The objective of EU accession has led Romanian policymakers and managers to give up the idea that investme nt in environmental protection should be postponed until the economic growth can provide financial resources needed to solve the environmental problems. In ternational studies have also shown that the economic growth exp...

The local rural communities of Romania have been strongly affected by the historian evolution in former decades by social- economic system evolution. To these ones, there have been added a period of almost fifty years of a social system based on centralized economy and, afterwards, Romanian economy was and is marked by the period of transition towards the market economy. All of these periods determined a peculiar social - economic relationship and, in fact, be haviors of the rural inhabitants, as ones between the ...

In this study, It is estimated the effect of short-term exposure to air pollution on hospital admission for respiratory illnesses among young children. The study used existing data from records of three hospitals. Air quality and meteorological da ta were used to estimate daily exposure for children. The impact of air pollution on the respiratory health of children is assessed using case- crossover methodology. During study period (June 2007- May 2008), the average particulate matter (PM10) concentration is 93.77 ...

A comprehensive review of published books and articles shows that discontinuities, especially joints within coal-bearing depos its are important features that must be considered during mine planning and desi gn. Less attention has been paid to orientations of joint sets and other disc ontinuities relative to mining face in proposed rock mass classification systems. In fact the structural competence of mine roof rock is determined primarily by the discontinuities that weaken the rock fabric. In this paper the effec...

Gold is a precious metal extracted and used since ancient times. The present paper analyzes the properties and characteristics of gold in terms of physical-mechanical properties and the process of its extraction from ore. After extraction of tons of low grade gol d ore using sodium cyanide (NaCN) are obtained two grams of gold and there are left mining waste dumps containing 25-50% gold. The technological process of cyanide not only shows a low efficiency of extraction, but it also brings great risks in terms of e...

Through benchmarking one can get informati on about the performing practices in the field of environmental policies, thus being able to try to reach its level of performance. But the national context requires the finding of self means of achieving the performance and performing practices. The environmen tal policies benchmarking has long term effects and stimulates the learning in concerned entities. The aim is to create sustainable prosperity. It requires common goals and use of all actors involved in the change ...

The purpose of this study is to present an application of the Static and Dynamic Rock Durability Indicators in order to estimate durability and weathered state of rock material used in the engineering structure. Durability of rocks can be defined as the rock’s ability to resist degradation during its working life. No one engineering test can be used as an absolute predictor of performance of building stone in service. Therefore a variety of approaches have been developed to estimat e of the durability of buildin...

Region forests grow on northern macroslopes of ridges from bottom to high- mountainous tundra. The forest plays important role in region ecology and in the Siberia territory as a whole. The influence of vegetation fires is the most important factor of reduction of boreal region forests. Fire activity is rising basically because of the human influence. During 35 years (1959-1994) about 33594.8 ha destroyed by wildfires. In 1995-2005 about 546088.6, ha had been destroyed by wildfires. During the period of 1999-2008 ...

The evaluation of the environmental policy it relies on the quantification processes of the expected and / or achieved, as well as of the report between the efforts and the effects achieved. If the evaluation of the effort s and / or of the effects is objectively or subjectively distorted, the ev aluation process becomes a me re formality, with negative consequences for all actors involved in policy. Thus, any successful monitoring requires prior specification of what must be a prog ram providing: deviations from ...

VSB – Technical University of Ostrava has a possibility to investigate changes in the rock massive during operation of heat pumps. Our new University Hall is heated up by the heat pumps. This object is the biggest building in the Czech Republic and in the Central Europe which uses this type of the system. Monitoring boreholes are situated in the area of heat pumps boreholes. They are equipped with heat sensors which monitor temperature changes in rock massive during the heat pumps operati on. This locality is ca...

Trepça mine in Stantërg during its activities of exploitation periods divides this process in three stages of exploitati on, where in the first stage there are old exploitations of levels from 830m and 610m, and the way of exploitation method, dimensions of backbones and securing plates has been change d as a result of determination of height of floor-horizons between them. The heights of 30m and the angle of small fall allows this method of exploitation to be more favourable and secure. Securing backbones, are ...

The territory of Kosovo, in particular of Dukagjini through the valley of the Drini i BardhГ« River is under the influence of the modified Mediterranean climate. This influence climate has enabled the growth of Mediterranean and Sub Mediterranean plants which became part the species Ficus carica L. ( Fig). In the current research to Ficus carica L. ( Fig) in Kosovo was known only as cultivated plant. In this paper, we are presenting the species Ficus carica L. (Fig), which represent new naturalized-native plant sp...

The article analyses the basic issues of procedural methods for evaluating the environment affected by the exploitation of mineral resources in the Czech Republic. The areas that were affected by the industr ial activities in the pa st and are not used currently are called Brownfields. These area s create the side effects called externalities from their very beginning. The first part e xplicates the basic views of the methods of assessment and evaluation of the environment and related negative and positive externa...

The widespread use of various types of ro cks in construction, construction materials industry and in raw material production implicitly requires a detailed knowledge of their geo-mechanical characteristics. The use of ro cks in the execution of various works is only allowed if they fall within certain quality criteria. With in this context, in the Geo- Mechanics Laboratory from the University of Petro Еџani, a complete assessment of the geo-mechanical properties of rocks from S outhern VГўlcan Massif was carried ...

In this study , Multichannel Analysis of Surface Waves Method (MASW), Vertical Electrical Sounding (VES) method, resistiv ity tomography and microgravity, together with the were used in Izmir - Turkey. By using these data, soil layer thickness, surface layer of the structural distribution of lateral, vertical direction, and the depth of bedrock were interpretated.

The surveyed area is located at the north of the Chamchamal city, Kurdistan region in the north of Iraq. Through this survey, the area has received its first potential geophysical prospective by gravity and magnetic methods. The geophysical survey based on 401 gravity and magnetic points. Th ese points distributed over eight profiles (four profiles for each method),along strike and dip directions. The gravity data has been corrected for several corrections to find out the Bouguer anomaly and the magnetic data is c...

For the analysis of various geological featur es can be derived from minimal anomalies caused by mass distributions, we present an ex tensive geophysical re cords. It is quite clear that at this stage; on ly a comprehensive analysis of data submitted by the various branches of geology can advance our knowle dge on geological structure and causes for it. Classical correlation between gravity anomalies of sedimentary basins of major minimum and is the most common significant abnormalities that may be of this type.

The main two sources that contribute to the surface heat flow density value are (1) heat production within the crust due to decay of unstable isotopes of Uranium 238 (U), Thorium 232 (Th), Potassium 40 (K), and (2) heat flow density from the mantle. Heat production can be calculated using the regional radioactive U, Th and K values. In this study radiogenic heat production values were estimated from U238, Th232 and K40 concentrations from Marmara Region. The crustal temperature distribution has been modelled by th...

Mining bodies that lay in the depth of Earth’ s core always appear as irregular bodies in different geological- mining circumstances. Mine “Trepça” in Stanterg since the beginning of its work in 1930 up to now has applied several exploitation methods of mining bodies, and one of these methods is the so called Frontal Method. This method is applied in cases when the ore body has small sizes in length from 30m and the fall angle up to 30º. During the app lication of this method, the securing backbones have b...

The importance of understanding the impact of digital competence has gravitated from the global business management to traini ng activities. The world is becoming a small village by means of digital t echnological environment. Digital competency plays a key role in people’ social, edu cational and occupational lives. When digital empowerment data gathered from participant were analyzed with respect to the sub dimensions such as awareness, motivation, technical access and digital competence. Many findings may be ...

The increase of the demands for quality in th e EU is caused by the fact that customer’s satisfaction is no longer enough; the expectations must be overcome by promoting the concept “Beyond Customer Satisfaction”, which determined the orientation of the Romanian companies toward s implementing the Quality Management System. This paper aims at analysing the impact that th is implementation system has on the analysed company's financial and economic results involv ed in such a process. This diagnosis, during 2...

The competitiveness of economy both at the na tional and regional levels needs to be perceived in close context with the principle of sustainable development because competitiveness an d sustainability are not mutually exclusive. The concept of sustainable development encompasses three pillars: economic, social and environmental. If we are to analyse these th ree dimensions of sustainable development, there shall be suitable indicator s available that would be capable of expressing mutual relationships between eco...

The purpose of this publication is to evaluate the geological environment for its suitability, respective unsuitability for foundation engineering. The means to realisation this objective was the study about extension of the engineering-geological zones on a map sheet 15-44-08 in studied area. This is an area municipalities in the Doly, Spa Darkov, Stonava and Horni Sucha. It is a mining area in the northeastern part of the Czech Republic. There were detected the speci es of the engineering-geological zones, the l...

Kosova is rich with the na tural resources. These resources have been used for the gain of different metals. The process of metal gain is dated since 1927. Since then until in 2000 the technological gain process is followed with the pollution of environment creating the deposition of scrap. These depositio ns are located in outskirts of Mitrovica town in a distance of 1-4 km. In this zone we have a high presence of heavy metals in the air, water and earth. This waste of metals have a serious influence in the envir...