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Ammonia as one of the air pollutant mostly originated from agricultural activities, such as manure and soil management. There is a need for precise and reliable quantification of ammonia emissions which is easy applicable on field or laboratory conditions. Cavity ring-down spectroscopy device Picarro G2508 measures ammonia (NH3) concentrations along greenhouse gasses, namely nitrous oxide, methane, carbon dioxide and water vapour content. The aim of the study is to develop methodology for NH3 measurements for Pica...

In this paper were presented the results of geodesic measurements which took place in the years 2001 ? 2011 and were carried out by some hard coal mine, which is located at the Upper Silesian Coal Basin in Poland. This mining plant was conducted an exploitation of hard coal in three coal beds named 338/2, 341 and 358/1 which were respectively located at the average depth amounts 600 m, 635 m and 1000 m. In order to observation of the impacts of multi-deposit exploitation conducted at the large depth, the measuring...

The North Caucasus Federal district is one of the most difficult in terms of its geological location. So, more than a third of the district is mountainous territory. The landslide process is developed in almost all areas. Landslide-bulk processes within the GFCS are mainly developed within the Greater Caucasus. Agriculture forms the basis of the economic complex and in the agro-industrial complex 53 per cent are crop and 47 per cent are livestock. The main directions of development in crop production are the produ...

The production of food waste covers all the food life cycle: from agriculture, up to industrial manufacturing and processing, retail and household consumption. Increasingly, industrial ecology concepts such as cradle to cradle and circular economy are considered leading principle for eco-innovation, aiming at ?zero waste economy? in which waste is used as raw material for new products and applications. The large amount of waste produced by the food industry, in addition to being a great loss of valuable materials,...

The aim of the study is to characterise the provenances of lodgepole pine ? a potential alternative to Scots pine in sandy soils ? and to recommend the most suitable ones for establishment of plantations in hemiboreal forests in Latvia. To achieve it, data on tree parameters (height, breast height diameter, quality traits, damage by cervids) from provenances originating from North America (53?-61?N, 118?-135?W) were collected in trial in central part of Latvia. The data were processed employing parametric methods....

Determining the weights of market features of real estate in explaining their prices is one of the basic objectives of the market analysis carried out as part of property valuation. In practice, property appraisers usually settle for basic methods of determining weights, e.g. based on the principle of ceteris paribus. The paper proposes the use of curvilinear correlation coefficients for this purpose, an attempt of such use was made and the obtained results were compared with the weights determined on the basis of...

Regardless of the nature and type of geodetic control networks, their task is to create a base for determining the position of various objects on the surface of the Earth. In the whole globe there is a need to conduct detailed geodetic measurements and to develop their results in the binding spatial reference system. In Poland, three classes of accuracy of terrain details are designated. Of all the field details, the highest accuracy of position determination is required for border points. This results from the ne...

In this study, the potential use of dam tailings (DT15 m., DT40 m., DT65 m.) of a copper mine for paste backfill material was investigated. Cemented paste backfill (CPB) samples were subjected to the uniaxial compressive strength (UCS) test at 7-14-28-56-90-180 days of curing ages. A total of 378 CPB samples were prepared at different binder dosages of 5.5?11.0 wt% by dry weight to determine an optimum CPB mixture with a target UCS of ?1.0 MPa over a curing period of 28 and 90 days. The strength development of CPB...

The paper resumes the previously published series of studies on the efficacy of a dry fractioning operation in centrifugal field of forces on the complex lipid mixture of pork lard, by multivariate analysis in general and the principal component analysis (PCA). Particularly, the correlation between the operating parameters (time-temperature-centrifugal rotor speed) and the physic-chemical parameters was determinate. Changes induced to the lipid mixture by repeated fractional crystallization, to separate (olein / s...

The topic of increased CO2 concentration is very actual in the Czech Republic, especially in the connection to the current effort for a massive revitalization of buildings, which aims to reduce the energy performance of buildings. Both residential and civil buildings revitalization includes predominantly replacement of windows and insulation by the contact system. Exchange of windows and high-quality contact insulation then result in almost no infiltration at all. So, when the forced ventilation is not compulsory ...

Modern versions of the ASRM-2017 (Automated System for Robust Modeling) package provide a solution to a large range of problems associated with modeling surfaces and gravity fields of planets. However, their application requires creation of not only the global models but working models of the local surface areas as well. Currently, these regional geopotential models are in high demand in geology and oil exploration. To solve the problems of this kind, the special algorithms were created and implemented because the...

The necessity of fulfilling as many conditions as possible in the specification resulted in the creation of composite materials. This idea developed in the aerospace industry was later used successfully in all industrial branches. The two materials that have been used are chemically distinct, each of which retains its properties in the composite, but provides the assembly with different properties and characteristics. Thus, for the continuous phase, the matrix was used an aluminum alloy, and for the discontinuous ...

The research carried out in the present paper aimed at monitoring and evaluating the technological process of obtaining the ecological cheese type ?PETROVA?, in the Maramures county area, Romania. To achieve this raw milk originating from domestic producers was evaluated in terms of fat content, acidity and density of this. After the final ecological cheese type product has been obtained, analyzes have been made for it?s physicochemical evaluation as follows: water content analysis, fat content analysis, salt cont...

Krakow ? the former capital of Poland ? is situated on border Krakow-Silesian monocline and Carpathians Flysch separated by narrow zone of the Carpathian Foredeep. In the geological structure of Krakow, the Jurassic and Cretaceous are exposed on the surface sediments. The Neogene sediments fill the Vistula valley. For thousands of years the sacred and secular constructions have been built using Jurassic limestones coming from local quarries. These quarries were founded on fault ridges, from the early Middle Ages t...

Synthesis gas for an electrochemical generator was produced in a thermochemical reactor with autothermal air conversion of methane (natural gas). Based on thermal balances of the reactor, a battery of SOFCs and a boiler-utilizer (BU) for heating primary and secondary air, cathodic air and methane, the following parameters were calculated: temperature at the anode, EMF of the fuel cell, electrical efficiency (gross) of the electrochemical generator, portion of hydrogen oxidized at the SOFC?s anode and specific cons...

In this paper are presented some researches concerning the recycling process of Co-Cr powders that is used by the sintering process DMLS. Direct Metal Laser Sintering process is an additive laser manufacturing technology and is used in different domains like tooling, aerospace, medicine and auto. In the tooling domain, Co-Cr alloy powder is sintered by DMLS process, using a Phenix Systems machine, for obtain different mold prototypes. Co-Cr alloy powder presents good mechanical and corrosion properties. The SEM an...

The permafrost zone (cryolithozone) is undergoing now an intensive anthropogenic influence. The strongest influence of the linear structure could be heating of the upper part of the ground layer, thawing of ice inclusions, weakening of the soil and surface subsidence. The strongest risk for constructing engineering structures within the southern part of the cryolithozone results from peatlands because of peat soil with high ice content. The aim of this work is revealing main interpretation criteria of peatlands co...

This article is an analytical representation of the impact of two essential attributes which represent the accuracy of a point determined by a tacheometric measurement. The first value is the accuracy of the measurement station, which in polish conditions is accepted as error-free, just like the points of reference in geodetic networks are accepted as faultless, although they are not. Another factor is the accuracy of the measurement itself. The accuracy of such a designated point has a significant impact, among o...

The Russian Federation is one of the world leaders in coal mining. The Russian coal branch is one of the key industries of the Russian Federation. Currently the government carries out measures for restructuring of the Russian coal industry. One of the major factors of coal branch sustainable development is to focus on foreign markets in condition to meet the demands of domestic market. One of the priority directions of the Russian coal industry development is providing trade of hi-tech power product. Thus consider...

Economic activities in Jiu Valley, as integrated components of major geographical entities, are constantly degrading the area?s natural heritage by depositing large quantities of waste products resulted from coal extraction and preparation, abandoned buildings and poorly refurbished sites. In this respect, the current paper addresses these areas by identifying and classifying the potentially contaminated/contaminating industrial sites in Eastern Jiu Valley, depending on the type of activity carried out on site. Th...

Whey cheeses, among which Ricotta is the famous one, are considered valuable food products from a nutritional point of view, enabling sustainable valorization of whey, a major by-product of dairy industry. As a consequence of their rich composition, high moisture content and pH, whey cheeses favor microorganism growth. That is why, producers have to pay special attention to avoid spoilage and risks to the consumer?s health, recalls and economic losses. They also need to meet health-conscious consumers demand for h...

Conceptual model of laboratory settling tank with cross current multiflux packet is presented in this article. Geometrical parameters of the sedimentation tank were obtained during numerical analysis of flow condition in the settling tank. Additionally effects of different kinds of modifications in the sedimentation chamber in settling tank were also presented. The results of the analysis made it possible to obtain even flow of the fluid in the working space of the tank. The simulations, which were carried out usi...

The services provided by ecosystems play a vital role in human well-being. As they are indispensable for maintaining development as well as for future economic and social growth of the society. Many analytic-deliberative techniques have been suggested as a promising approach to ecosystem services valuation but still they are in many countries on an experimental stage. The aim of this study is an impact assessment on ecosystem services, which is being carried out on the Myjava River basin where we address the probl...

Winter pumpkin represents a seasonal crop of health and food interest due to its nutritional composition. The aim of the present study was to comparatively evaluate the content of the main antioxidant compounds, carotenoids and phenolics, from pumpkin (Cucurbita maxima) pulp as related to different pretreatment conditions. Samples of pumpkin pulp were subjected to three pre-extraction methods, as follow: freeze-drying, oven-drying at 60oC and freezing at -70oC. Conventional extraction of carotenoids and polyphenol...

The aim of the research is to characterize chestnut honey by using physicochemical methods to achieve a specific profile. Determination of polyphenols content gives indications of the antioxidant properties of chestnut honey. Changes in quality parameters have been studied regarding acidity, pH, viscosity, dry matter and anthocyanin content. The obtained results indicate variations in the pH of honey samples between 4.9-6.7, the acidity of honey samples varied from 0.21 to 0.41. The honey viscosity was determined ...

The relevance of the issue under study lay in the opportunity to predict climate change on the planet in the context of ever-increasing greenhouse gas emissions from natural and anthropogenic sources. Will it result in global warming or global cooling? The paper aimed at revealing correspondence between greenhouse gas emissions into the atmosphere and temperature change. The leading approach to the problem study was a method of physicochemical (thermodynamic) simulation with the use of the ?Selector-S? software wi...

Commercial field development of high-viscosity oil and natural bitumen presents a global issue nowadays due to increase in hydrocarbon consumption, changes in structure of oil reserves with the increasing dominance of heavy and extra-heavy crudes, and development of innovative technologies of production and processing of natural bitumen. The estimated probable bitumen reserves are 790-1000 billion tons, much greater than reserves of light and medium viscosity oil. Bitumen processing technologies include production...

Tailings embankments are part of the legacy left by the intensive mining industry. These vast impoundment storages are associated with some adverse environmental and social impacts creating insecurity to the stakeholders. Mining tailings may also be a source of minerals with high grades. Reprocessing techniques may be used as an alternative solution to recover some metals and to rehabilitate these sites. A sustainable reprocessing project commits to integrated management of threefold dimension objective: economic ...

Development and consumption of frozen products is an aspect that is strongly related to nowadays consumers. These are considered less nutritious and less healthy than fresh ones due to processing, artificial ingredients and additives used for production. The paper focuses on the influence of frozen storage of bread dough enriched with lentil flour. The addition of lentil flour in different proportions (15% and 30%) was investigated in order to study the physicochemical and organoleptic effect concerning the obtain...

Impact of the municipal solid wastes (MSW) landfills on the environment is caused by issue of a filtrate and biogas and also atmospheric transfer of material of waste from a surface. As a result an underground water and surface water, soils, unsaturated zone deposits, atmospheric air are exposed to intensive pollution. The most active and aggressive agent of transformation of components of the environment near landfills of solid municipal waste is the filtrate which impact, first of all, on underground waters. The...

In this paper, a PVC filled with a biodegradable polymer, such as polyhydroxybutyrate, was investigated. Polyhydroxybutyrate is a natural biopolymer, but its use limits its high cost. These polymeric composites were obtained by rolling. Thermal and thermomechanical properties of polymer composites based on PVC containing various amounts of polyhydroxybutyrate are studied. It has been determined by differential scanning calorimetry method that the glass transition temperature of PVC decreases with increasing percen...

One of the most popular systems of simulation - GPSS World provides users (1) software tools to interact with the system in the process of simulation research and (2) software tools, realizing immediately the implementation of the model (including: syntax analyzer interpreter model, clock modeling, management of the list of events and more.). Until a few years ago the programs in the first group only automated a part of research itself, namely the creation of a text model and conduct experiments with it. In the ab...

Amines play an important role in the modern chemical engineering. It is a key intermediate for agricultural, pharmaceutical, textile, polymer and other fields of industry. Bio-basedamines, e.g. the derivatives of isohexides, are of a great attention. Nowadays, different methods of the synthesis of polyamides, polyimides, polyesters, polyurethanes, and polycarbonates on the base of isohexides are developed. Thus, mono- and diamine derivatives of D-isosorbide are considered to be a prospective feedstock for polyamid...

The primary aim of the paper was to to develop methodological bases for information protection management in computer networks to solve the scientific and practical problem of providing the necessary level of information security during the life cycle of the information security system in the conditions of uncertainty of information influences The object of the research is the information protection management system in the segment of the corporate information system. The subjects of the study are models, methods ...

Countries on the eastern coast of the Baltic Sea ? Estonia, Latvia, Lithuania and Poland ? experienced significant changes in the political and economic structure during the 20th/21th centuries. The aim of the research, first of all, is to assess the competitiveness of the Latvian economy compared with the other countries on the eastern coast of the Baltic Sea and, secondly, to evaluate the activities carried out in 2009-2016 in order to increase the competitiveness of the national economy. The Global Competitiven...

In this paper, combined effects of carbon fibres treatment and compatibilizer polymers (PE-g-MA) on the structure and properties of PA/PE/PE-g-MA/ functionalized carbon fibres composites were studied. The optimum formulation was used to prepare a series of nanocomposites under different technological conditions. Also, a correlation between their physico-mechanical properties and IR spectra (ATR technique) was proposed. The carbon fibres functionalisation consisted in oxidizing the nanoparticles with oxidant mixtur...

The presented paper is focused on evaluation of progress stability of atherosclerotic plaques which were examined using B-MODE during at least 5 years. For this study have been examined total of 482 patients. For each patient are stored data of atherosclerotic plaque separately in left and right carotid artery. The goal of this study is to observe progress of the plaque width in transversal section. The width has been measured using diagnostic ultrasound with resolution 0.04 mm; measured width has accuracy of 0.1 ...

Biomass is one of the most promising renewable energy sources that could contribute to sustainable energy supply including the reduction of greenhouse gas emissions. Russia has a huge potential for producing biofuel from wood raw materials. However, forest bioenergy is now at the first steps of development. In this regard, the problem of effective choice of the suitable wood fuel supply chain is very significant. A toolset of decision support systems for wood harvesting and forest bioenergy logistics has been deve...

Property investment is predominately determined by the characteristic features of the good. The specifics of the real estate is shaped by a group of physical, economic and institutional-legal characteristics. The most important from the point of view of the investor involve: stability in place, durability, diversity, deficit, location, protection against inflation, loan security, capital protection, reduction of current expenditure, consumption. Because of the features mentioned above real estate is considered a v...

To implement the International Legislation, in the future it is necessary to retrofit HFC refrigerants with ecological ones. Minimizing the presence of F-gases deriving from activities in the field of refrigeration in the atmosphere, air-conditioning systems and heat pumps can only be carried out by observing the F-Gas Regulations, namely the (CE) 517/2014 Regulation and its relevant Subsidiaries, along with the European (and Romanian) refrigeration safety standard SR EN 378. Demonstrating a strong commitment to p...

The lithospheric mantle of the central part of the East European Craton has not been studied in detail. The main goal of the research is to develop a model of the deep structure of this region. Recently new vertical velocity sections were constructed to a depth of 300 km, obtained by the receiver function method, along the sublatitudinal profile Obninsk-Nizhny Novgorod. The position of the main boundary of the crust-mantle is reconsidered from the velocity sections. Velocity differentiation is found within the upp...

Multi-well pad drilling originates from offshore drilling where the use of this method is dictated by the limited mobility of platforms. Onshore group location of the wellhead slots is used since recently. It was first used in the Rocky Mountains in the USA in 2004. Beginning is related to the commencement of hydrocarbon extraction from unconventional reservoirs in the United States. Exploitation of unconventional shale and tight reservoirs with vertical wells is economically unprofitable because it is not possibl...

The problem of industrial ventilation has emerged as a result of the serious pollution problems that arise both in the industrial and industrial environments. Before addressing an industrial ventilation study, the question should be raised whether there is no simpler means of reducing or eliminating the causes of pollution or of reducing pollution by modifying the production process or the design and construction of the actual ventilation system. Verification of ventilation facilities has a strong preventive role ...

The main purpose of this paper is to present the process of fast and efficient acquisition of field data in order to create a map of the maneuvering area and aprons of the Deblin Airport (EPDE) using Mobile Mapper 50 receiver with Mobile Mapper Field Application. The area navigation (RNAV) uses runway information, field obstacles, and other important factors that support a precision and non-precision instrumental approach and landing procedure. Therefore, the development of RNAV flight procedures requires the acqu...

Woodchip material is one of the most promising fill media for denitrifying bioreactors. Woodchip denitrifying bioreactors are used for nitrate reduction in the outlets of drainage systems, shallow groundwaters, etc. Despite their overall positive effect, undesirable leaching of organic compounds from the fill medium can occur during a bioreactor?s start-up phase. The released organic compounds can cause oxygen depletion and some of them can have a toxic effect on biota. The paper presents the quality of leachates ...

The Arctic coasts are complex and actively changing systems, their erosion rates varying in time and space. Due to global warming and its thermal and wind-wave effects, there is a tendency of increase in coastal erosion rates. Understanding of the interaction between permafrost and sea is important to disclose the background of active development of natural resources in the Arctic coastal zone (construction of coastal facilities, offshore pipelines, etc). In the present study, coastal dynamics of the Western Russi...

Fracturing using propellant systems is recognized as a cheap alternative to conventional hydraulic fracturing in circumstances where heavy pumping equipment is not available. Usually, fracturing wells with propellants is used as an initial stage, preceding conventional hydraulic fracturing, and to improve the injectivity of the borehole. This method has a number of advantages: the length of the fractures ranges from 1.0 to 5.0 m and it eliminates compatibility problems between the formation fluid and the fracturin...

The planned maintenance activities of the mining technological equipment are carried out on the principles of risk management and is done in order to prolong their duration of operation and to reduce the production cost. The quick possibilities of reducing production losses due to accidental stoppages of quarries and underground exploitation equipment, depend on the establishment and application of reconditioning methods of the subassemblies and spare parts that are frequently defects and replacement. The rotary a...

Amiodarone (AMD) is an antiarrhythmic agent used for the treatment of ventricular arrhythmias, arterial fibrillation, and severe rhythm disorders. The main therapeutic disadvantage of AMD is its low oral bioavailability and low water solubility. The aim of the study was to obtain the hydroxylpropyl-?-cyclodextrin/AMD inclusion complex and to assess its degree of drug loading using a new HPLC method. The solubilizing effect of cyclodextrin on AMD was evaluated by the phase solubility method. The concentration of AM...

Due to the relatively different conditions of small and large water supply companies functioning, there are significant differences in the reaction, progress and consequences of the crisis situations. The specificity of small company requires an individual approach in the area of crisis management, for instance due to limited financial and technical resources. Admittedly, small water companies are particularly exposed to the negative consequences of a possible crisis, but from a large part they show greater flexib...