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It is proposed to process gold mine man-made wastes through ultrasonic activation of source materials in water, then in an alkaline solution with subsequent cyanidation of gold-impregnated cakes, or direct cyan idation and sorption conditioning of gold multicomponent solutions with nano-structured anionite an av erage radius of pores of which is within 600-700 Зє that contains no more than 6-8% of strong-base groups. A preliminary withdrawal of elements accompanying gold ensures obtaining of good- quality target m...

The Chah Zard Ag–Au epithermal deposit is located within an a ndesitic to rhyolitic volcanic complex in central part of Urumieh–Dokhtar Magmatic Arc (UDMA), west– central Iran. The deposit is formed in breccia bodies dominantly hosted by rhyolite porphyries. Geological field relationships s how that epithermal mineralization occurred in close association with a phreatomagmatic fracturing event, being localized in breccia cements, and formed as disseminated sulfides in the matrix of the more permeable breccia...

The contribution shows the problems of unde rground coal gasification. Currently, this topic is timely, seeing that many coal deposits can not mine through traditional mining methods. Through underground gasification can be obtained from these deposits so- called synthetic gas - syngas, which can be conve rted into electricity or used in industry and households as fuel. Underground gasification technology has been verified in laboratory conditions for several experiments. Experiments differed fr om one by ways of ...

University accreditation is also an important mechanism for protecting the consumers of higher education, as well as an accountability factor to higher education providers. In Romania, the quality assura nce system has exercise d pressures towards the homogenization of hi gher education. By the nature of standards and quality indicators used, but also by his philosophy, quality a ssurance has encouraged higher education institutions to comply, both in content an d in the processes of relatively rigid institutional...

Within the lignite deposits located in the Oltenia coal basin, frequent sand bands are emerging, carriers of signifi cant aquiferous horizons and complexes. The geological pattern induces an important variation of hydro-geological conditions along the deposit’s spreading, which in turn gives difficulties in mining technology selection. Determining the problem’s solution involves th e versions ranking from the strongest to the weakest, in relation to all the criteri a. Both maximum and minimum criteria can exis...

Iran is a country with an area of 1,648,198 Km 2 in the Middle East. When it comes to sun, there are 300 days of pure high UV sunshine in 95% of the country. There is a triangular great desert from center to the East of Iran, which due to its position receives a large amount of solar energy. Because this area is enclosed by the high ridge Alburz Mountains in the North, the Zagros Mountains in the West and the Makran Mountains in the East, there is no climate variability and also its geographi cal and environmental...

Costs are present in many daily decisions they take managers from lower hierarchical levels, but especially importa nt for strategic decision taken at top management level. The very adoption of certain strategies fo r the enterprise is based on analytical considerations which require methods of ec onomic and financial evaluation of projects, methods that can not be imagined outside costs. Allocation of resources to the enterprise are based on estimated costs, just as they and replacement of assets. Computation of ...

Some compounds especially sulphur dioxide (SO2) is considered as typical indicators of the urban air quality. To inform decisions re garding, for instance, the protection of public health from elevated SO 2 levels in Balikesir, high-resolution maps are necessary. Therefore, the main objectives of this paper were to: (1) analyze th e spatial distribution of SO2 levels using geostatistical techniques; (2 ) incorporate this in formation in a GIS to produce accurate SO 2. Geostatistics provides useful technique to get...

The object of this study is to locate the zones of groundwater discharge into the eastern shores of the Dead Sea. To achieve this object the electrical conductivity-temperature with a depth method was used. This study show ed that the Dead Sea divides into two layers relating to the electrical conductivity and temperature with depth. The upper layer subdivided into two members. The upper member extends from the sea surface down to a depth of 15-25 m. The lower member extends from a depth of 15-25 m to 40 m and it ...

Geographical information systems (GIS) are commonly understood as information systems serving for effective saving, actualiz ing, manipulating, analyzing, modelling and presenting geographically oriented da ta. Treatment of geological information through GIS comes together with several problems. Right and effective analysis of complex system of surface and undersurface objects requires whole specific data gamut, which are typical for geological sphere. It is possible to solve questions connected with qualitative a...

The paper deals with measuring the magnetism of the metabolic products of Acidithiobacillus ferrooxidans bacteria that come from acid mine water accompanying mining and processing of mineral resources. The aim of the paper is to characterize the precipitates produced by the bacteria by m eans of magnetic quantities using a Vibrating Sample Magnetometer (VSM), which helps to identify th e magnetization of substances in dependence on the external magnetic field. The results are rela ted to the metabolic activity and...

A various range of remote sensors are currently available to help to explore a landscape and other natural components. The mainly part of this field is based on a small format aerial photographs (SFAP) taken from a small aircraft. The scienti fic benefit arises from the combination of knowledge achieved by conventional field work and the visual information gleaned from SFAP. In monitoring studies, temporal changes of forms and patterns give additional clues. The coupling of field data and interpretation of SFAP...

The foundry industry, itself, is one of the wo rldВґs first recyclers. Foundries have been making new metal objects by remelting old ones. An estimated 15 to 20 million tons of scrap metal that would otherwise be sent to overcrowded landfills are being remade into new castings each year. As with most industries, the foundry industry generates its own by-products. Typical by-product streams from the foundry indus try include foundry sand, foundry slag, baghouse dust, and furnace and ladle refractory. In order to co...

During the last decades an increase of the number of extreme natural events has been observed all over the world. Drought in Southeastern Europe is among the extreme events, which might have significant negativ e impacts on the socio-economic sectors. Drought in Bulgaria has been in details studied by many researchers, but being a problem of vital importance, is continuously considered with enhanced attention. 50- years time series of precipitation, collected from 20 weather stations located at the Maritsa and Tun...

Slovakia falls behind the aims that were appointed in the field of the scrap economy. In our paper, we are concentrated on the valuatio n of the interest of Slovak citizens in the separated collection of the communal scrap in Slovak Republic, that is very low when talking about the mass. On the basis of th e questionnaire research we evaluate the interest in the separated co llection of communal scrap of citizens of the cities and villages acoording to the fact they live in habitable blocks, or in family houses . ...

Wages and rewarding in the labour-intensive tourism sector are not only motivating for workers but also influential in helping them to cling to lif e and their work. In tourism sector, like in all sectors, worker satisfac tion is reflected on the enterprise. Wage awards lead to the satisfaction of workers in the tourism sector a nd especially in large accommodation enterprises. When we look at the same wage awards from the point of view of employers, we see that they are regarded as expense item. Wage awards, whic...

This research will address the important pr oblem of waste management sector for the Municipality of Prishtina. Rapid urbani zation has made solid waste management a serious problem today. The perception of the people has always been that it is a responsibility of the local government bodies. Local authorities are bound to keep their area clean. For some time now, many municipa lities, city corporations and industries have been experimenting with several innov ative and participatory methods of Reduce, Reuse and R...

A trans-regional project, WasteKIT, devoted on the economic development via waste management, based on knowledge and integration has been presented. The project puts together 18 different waste management related organizations from Sofia region (Bulgaria), Emilia Romagni region (Italy), Am sterdam region (Netherlands), Yorkshire and Humber (Great Britain) including resear ch and education organizations, SMEs and local authorities in order to e xpand the ambitions of region s with respect to regional economic devel...

All wastes, as the products of human activity, necessarily enter matte r cycles in nature and ecosystems after certain time. They can damage the nature by their direct effects on biotic and abiotic ecosystems. Our contributio n discusses the risk properties of wastes and their influences on the environment with respect to the protec tion of public health. The hazard effects of wastes are demonstr ated using some cases of their direct exposition on organisms and other parts of the environment.

In recent years, the intern ational community has witne ssed incidence of climate variability and human ac tivities. In this study, will be treated water resources and environmental protection is the catchments area of Lake Badovc. The catchments area of the Lake Badovc has a size of 109 kmВІ and the active storage volume of the lake is assessed to 26.4 Mill.m3. Around 28% of the total population of Municipality of Prishtina supply with drinking water from Lake Badovc. The knowledge of flows reaching the Lake Bado...

In this paper, the case of study is water resource protection from negative influences such as climate variability and human activitie s should be approached with great care. In this survey will be trea ted water resources and envi ronmental protection is the catchments area of Lake Batllava. The catchments area of Lake Batllava has a size of 225 kmВІ and the active storage volume of the lake is assessed to 34.4 Mill. mВі. The current population of Municipality of Pris htina is estimated to be around 400,000 and L...

In this paper we analysed timber and timber based products as renewable materials that can be reused, recycled or used as ener gy source, with minimal waste. In civil engineering the main aspects of environment are: consumption of material and energy for constructing purposes, and emission of harmful materia into the environment during the life cycle of construction. Forest regene ration has certain significance in the system of sustainable development. Wood degradates easily which is an advantage considering the ...