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The motivation for undertaking the research forming the basis of this article were the conditions for the design and construction of road investments on the example of the Warsaw Eastern Bypass. Particularly important in this multi-stage process of investment preparation is, at some stage, appropriate formulation of evaluation criteria and carrying out analyzes that allow to indicate the best variant of the route. Working out and accepting the final proposal often encounters difficulties in finding an agreement be...

In the context of the current climate change faced by mankind, a series of phenomena are emerging, which can pose problems to both several environmental aspects, including among others biodiversity and agricultural crops. Drought is a regional phenomenon which, through its impact on agriculture, can also have a bad influence on the economy. Apple farming, through its spreading area and its importance in human nutrition and health is also affected by this aspect. Based on high temperatures and a reduced amount of p...

In cement production waste of various industries (metallurgical, chemical, etc.) is widely used. This contributes to the improvement of environmental protection and intensification of the clinker firing process, as well as improving the quality of clinker by modifying clinker minerals. Due to the large variety of wastes, the decision to use them effectively in the production of Portland cement clinker should be based on the results of scientific research both in the laboratory and in the industrial environment.The...

The article dealing with optimizing of the foundation method a statically complicated bridge structure founded in difficult engineering-geological conditions. The Finite Element Method (FEM) was used to optimize the foundation method. Its mathematical apparatus makes it possible to take into account and define very complex and difficult boundary conditions of the solved engineering problem (material, geometric, static, etc.). The analysed bridge over the Danube River is located in Dunaujvaros (Hungary), which is a...

The early 21st century is a time when unmanned surface vessels (USV) are used in various measurement applications. Modern autonomous and unmanned vessels are increasingly often used in bathymetric measurements whose aim is to measure the seafloor with the sufficient positioning accuracy. Therefore, the use of USVs in hydrography can be seen as the beginning of a new era in this regard. This paper presents bathymetric measurements with the use of an unmanned surface vessel in waterbodies of the Republic of Poland w...

The water quality assessment on chemical and biological indicators of the Kuibyshev reservoir (Middle Volga, Russia) and the rivers ? tributaries of 1 and 2 orders was carried out. Based on the results of hydrobiological research, modal intervals of the total number of zoobenthos were calculated, as well as the proportion of oligochaetes in the community and the Woodiwiss index. The Woodiwiss index was used as the indicator of water quality on the base of characteristics of benthos community. The method of redunda...

The investigation of cellulose-based aerogel production and its application to oil product clean up from the water surface was performed in this research work. Three kinds of aerogel with 2.5, 5.0 and 7.5 wt. % of cellulose have been produced. The analysis of aerogel's maximum sorption capacity as well as its regeneration for sorption of crude oil, marine diesel oil (MDO) and biodiesel sorption from water surface were performed during this study. It was found that the best sorption properties have 7.5 wt. % cellul...

This paperwork makes an analysis of the influence that the noises and the vibrations have on a biomechanical model on the human body at different frequencies. Besides the harmful influence on the hearing acuity, the noises have also a harmful effect on the organism through the appearance of some changes on the physiological balance. Driving the car generates noises and them being received by the driver is done consciously, with pathological implications long-term. The harmful effects of the noises are amplified by...

The main aim of the work is to determine the distribution of waste mass in the process of mechanical transport on sliding, reciprocating and cylindrical grates. The mass distribution in a layer on the grate is caused by the loss of the waste material during combustion. The work uses the formulas from the literature describing the mass transport of waste on the grate. The scope of the work did not include experimental investigations of waste incineration in a layer on a grate, on a laboratory scale. The results of ...

Urban air pollution is caused by a combination of different sources. Their contribution to the air quality must be evaluated based on quite reliable data collected by the optimal net of the monitoring points. Under these conditions, the data on special marker compounds are to be obtained. But the selection of marker compounds and optimal places for control points requires to justify the distribution pathways of the pollutants. Thus, it is necessary to study the mechanisms of the accumulation of marker compounds in...

The article devotes to development of mathematical model of sawdust briquetting process, establishing relationship between the briquettes density, the moulding speed and pressing effort. The study uses elastic-viscous-plastic Bingham body stress-strain equation as a rheological model of the sawdust being briquetted, the model parameters are non-linear functions of the sawdust density; classical Runge-Kutta method was used for solving the nonlinear differential stress-strain equation. The calculations results show ...

In this paper, a mixture PVC/PHB was filled with a natural filler, such as wood flour (WF), was investigated. These polymeric composites were obtained by rolling. Thermal, thermomechanical and mechanical properties of polymer composites based on PVC containing various amounts of wood flour are studied. It has been determined by differential scanning calorimetry method that the glass transition temperature of PVC decreases with a decrease in the percentage of PVC in the mixture. For these composite materials, the T...

The topic addressed in this paper is related to two waste management (poultry manure) objectives: reducing environmental impact through combustion, and energy generation. Poultry industry waste is produced in large amounts and cannot be always used as a fertilizer. Its storage needs large sites, but if they are improperly designed could affect the phreatic groundwater. The paper is organized as it follows. The first part presents the energy characteristics the waste samples analyzed (they come from a poultry farm,...

Pressure cylinders are commonly used in industry and in health services as well as in laboratories, ordinary households, and accommodation facilities. Their usage, however, is collocated with considerable risk during filling, transporting, and usage, as well as storing. The risk is predominantly influenced by the type of gas inside the pressure cylinder. Gases inside the pressure cylinder can be liquefied, compressed or dissolved. If the cylinder containing gas is exposed to a higher temperature or fire, destructi...

The energy consumed by buildings accounts for approximately 40% of the total consumption and one-third of the greenhouse gases emissions around the globe. And as the demand for energy increases rapidly, a way of improving the utilization of latent energy around us is accomplished by the use of the Phase Changing Materials (PCM) in the building insulation to reduce the energy consumption rate by one of the PCM application categories, passive, active and free cooling methods. In this paper, an experimental model was...

In materials science, composites (nanocomposites) are materials consisting of a combination of two or more micro (nano-) and / or macrocomponents, which are different in shape, chemical composition and do not have significant mutual solubility. A distinctive feature of composites that determine their importance is that two or more noticeably different components when combined form a system that has significantly improved properties compared to the properties of its individual components. It is known that for most ...

The paper discusses the geochemical forms of some trace elements (As, Cu, Zn, Cr, Pb) which were identified in bottom sediments of rivers in different landscape conditions. Sediment types were divided into three groups in depending on the lithology and organic matter content: sandy and sandy-loam, typical for the northern part of the Semba Peninsula; silty-sand and loamy sediments with low (up to 7%) content organic matter (Warmia Upland); loams with high (up to 12%) content of organic matter (Polesskaya Lowland, ...

The study of soils in the vicinity of medieval settlement that has only one stage of anthropogenic impact at 5-8th centuries AD was established. For comparison, fertilized soils within the modern rural household were investigated. In order to study the microbiological properties of the soils in either case, series of soil pits were made at different distances from the settlement: in the area of regular manuring, in the area of episodic fertilization and in undisturbed areas. The determination of the number of ther...

Bituminous sandy rocks occur in the area between the river Volga and Ural mountains (Republic of Tatarstan, Russia) in the sediments of the Permian age. According to the mineral composition, they belong to the graywacks and are composed of quartz grains, feldspars, effusive fragments, etc. The study of their composition and structure was carried out in order to identify the factors of localization of oil and bituminous substances. However, mineral particles of pelitic and smaller dimensions remained practically un...

Thin-layer chromatography is a useful and environmentally friendly analytical tool still with potential for the future. As a planar chromatographic technique has a wide spectrum of applications and it can be complimentary to other chromatographic techniques like, for instance, high performance liquid chromatography. Separation on thin-layer was performed for the very first time by Izmailov and Shraiber in 1937-1938. They called the new technique spot or drop chromatography and used it for separation of selected pl...

The dynamics of the development of modern society dictates new requirements for the creation of a sustainable workspace or eco-friendly office. The functional state of the human body is an indicator of environmental friendliness of the working space. Therefore, a Green office is not only the creation of a comfortable, ecological space, ergonomic workplace, but also taking into account the whole complex of factors that can negatively affect the functional state of the organism. In modern society, a person has to li...

The changes of the welfare of the Russian citizens are explored in the paper. The time diapason taken into account is: 2000 ? 2018. The monthly wage index based on the Dynamic series of macroeconomic statistics of the Russian Federation data (2000-2018) has been explored. The mathematical models of the wage index of this time period have been presented. They are based on the ARIMA (p, d, q) models with p, q less than or equal to 5 (Autoregressive integrated moving average). Forecasts of these models are compared t...

Wind power, via wind turbine, transforms mechanical energy to electrical energy. It is an alternative to burning fossil fuels, it is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation, consumes no water, and uses little surface of land. The net effects on the environment are far less problematic than those of fossil fuel sources. This paper proposes a forecasting model based on time series technique for wind power energy generation. The increasing use of renewabl...

One of the major problems associated with excavation of the copper deposits in underground mines in Poland is the relatively high level of seismic activity. Numerous high-energy tremors can negatively affect the stability of underground workings and can have a destructive impact on the infrastructure located at the surface as well. As predicted, the seismic activity increases along with the depth of mining operations. Therefore, in order to face these threats, a number of organizational and technical prevention me...

Tiny houses and buildings, as well as their associated lifestyles, have become a global phenomenon which is receiving a significant amount of media attention, in addition to being quite popular on the Internet. While living in a tiny house may seem attractive to and is even celebrated by some, the usable floor areas offered by most such buildings are far below what would currently be considered a proper housing standard and therefore can be considered as having a detrimental impact on quality of life. In the artic...

Experience in the use of enhanced oil recovery methods shows that the main factor responsible for efficiency of the treatment is the correct choice of a particular technology for certain geological and physical reservoir conditions and the stage of development. Considering complex geological structure and low productivity of high-viscosity oil reservoirs in the Volga-Ural petroleum province, development of an integrated stimulation technology is a priority. The paper presents a promising concept of formation stimu...

This paper reports on a study of the sorption of toluene vapours on three medium-volatile bituminous coals from the Vaclavovice, Paskov and Trojanovice mines in the Upper Silesian Basin in the Czech Republic. The coal samples were characterized using various petrographic, chemical and porous texture analysis methods. Toluene sorption and desorption isotherms were measured on powdered coal samples at temperatures of 30°C and 50°C and at pressures ranging up to saturation, using a gravimetric sorption analyzer. The ...

The key features of good education are productivity and efficiency. At present, there is fragmentation in the study content and study process; too much emphasis is placed on isolated, passive learning and the content of teaching is not sufficiently related to real life situations. In order to introduce more effective education in practice, better professional development is needed. There must be a clear link between the practical needs and the teaching work. An effective education system is important because it de...

Generational conflicts exist because of different needs, goals and values, as well as differences in the expected outcome. Over the course of the century, work has become a means of challenge, while humanity has evolved from a generation of goods to a hyperconsumer society. The purpose of this study is to analyze ways of resolving conflicts for X and Y generation employees to identify differences and understand possible ways to compromise decision making. The tasks of the study are to evaluate these generational d...

The concept of bioeconomy began to actively take shape in the world in the mid-2000s, when the Organization for Economic Cooperation and Development (OECD) and the European Commission (EC) began to develop programs to promote the bioeconomy in different countries. Documentation in the field of bioeconomy is a challenge for research, as official statistics report data on traditional sectors without distinguishing between synthetic and biological production. Therefore, indicators for the bioeconomic field are curren...

The most pronounced observed climate change is the rising surface temperature of the Earth. In view of extreme weather events, existing risks and possible consequences, adaptation to the adverse effects of climate change has become a global challenge in recent decades. The interaction between climate change and its possible consequences is a complex and very dynamic system that needs a great deal of information to be properly managed. These facts were also reflected in the Council of the European Union, which appr...

The present paper comprises a complex topographic survey for the identification and registration of a farm type immobile consisting of company headquarters, stables, silos and concrete slabs for registration in the land book. The farm where the topographic works were executed is a farm specializing in the breeding and fattening of buffaloes, the production of milk and its processing. It was set up in 2007, and the initial constructions were built between 2007 and 2015. The farm is located at the entrance to Pecica...

Nowadays, according to the current century, the one of speed and information, the way of calculating the volumes of aggregates is desired to be much faster and more accurate in every aspect. The volume designates the property of a body to have three-dimensionality, that is development along three perpendicular axes on which the length, width and height are measured. All three those dimensions are actually length values that define the place which that object occupies in space. The theme of the project is to calcul...

In the paper we studied toxicity of petroleum on germination and seedling stage of plant using phytotoxicity tests. These tests measure the decrease or absence of germination and root elongation only after a few days of exposure to contaminated soils compared to unpolluted soil (control). The plant seeds used were rape (Brassica napus), white mustard (Sinapis alba), peas (Pisum sativum) and rye (Secale cereals). The soil used in the experiments was a reference OECD soil for these types of tests. The soil was pollu...

There are the structural-material complexes of the rocks in the crystalline basement of the Volga-Ural oil and gas province, which characterized by different composition and structural position. The biggest structure, which occupies a central position in the region, is the Tatar arch. The Tatar arch is a large megablock of the lithosphere (granite-gneiss core) bounded by mobile zones (graben-shaped deflections). They are associated with pre-metamorphic basic magmatism. The areas of the crust bounding and separatin...

There are a number of traffic calming measures that can be employed to protect vulnerable road users (VRU). Traffic calming is of critical importance in small towns and villages crossed by regional roads where it is necessary to resolve a number of conflicting traffic-related interests on stretch of a road that is just 500 m to 1,200 m long. Pedestrian refuges are one of the most common measures used to protect vulnerable road users. Considering the statutory speed limit of 50 km/h applying in daytime to all roads...

This article describes the key features of the automatic speech recognition systems training process that can be used in a work of chat bot or voice assistant. Importance of research in this area is grazed. Difference between chat bot, voice helper and voice assistance are explained. Basic requirements for correct chat bot usage are formulated. Some common automatic speech recognition systems are reviewed. Kaldi and CMU Sphinx has been used as an open source systems? example. The whole installation and training pr...

At the Moscow University of Geodesy and Cartography (MIIGAiK) a new approach to learning C++ programming for students specializing in cartography and geodesy was developed. The training programs in C++ for students were written. Programs with geodetic content prepare students, future surveyors and cartographers to solve their specific tasks more purposefully than common standard programs and tasks. One of those programs calculates the plane rectangular coordinates of an additional searched point according to Gauss...

Krasnoyarsk Territory is a region of Russia, where the diversified economy of the country is represented. There are mining, metallurgical, petrochemical, timber, woodworking and other industries. Such a developed infrastructure of the economy provides stable needs for qualified specialists-engineers, technologists, power engineering specialists. It is clear that the system of higher and secondary vocational education is aimed at training personnel who are ready to participate in the regional development effectivel...

The problems of geodynamic safety assurance in mining are common for many countries with developed mining industries. Considerable results have been achieved in Russia in solving rockburst problem, yet in the last decades this problem is transforming into man-triggered seismicity problem. Induced earthquakes in areas where mines had been flooded, seismic activity in previously safe regions, re-activation of tectonic faults, violent man-triggered earthquakes in open pit operations have been registered. As a matter ...

The calculation of wave height, - length and - period changes which result from trans-formation by currents and bottom are needed when solving engineering problems of sea and river hydraulics. It is possible to carry to number of such problems also a problem of construction and operation of sea channels which has big economic value. Modern sea channels can have width several hundreds of meters and difference of depths on the way to the channel and on an axis of the channel twice and more. Therefore, in calcula-tio...

The super-compaction is the process used to conversion of the radioactive waste into a stable, compacted solid form as a cylindrical pellet. A characteristic of the compaction is that it reduces the volume of waste but the amount of radioactivity remains the same. A super-compaction facility operating under a force of 2000 tones which compresses the material contained in the standard drum of 220 l is used for treatment of radioactive waste. A compressed form, reduced by its high with the diameter of the metal mold...

In technical literature many specialized scientific materials are available which treat the elimination of solids and oil from water injection, the newest approaches being oriented towards the process with low power consumption as with most modern facilities in order to improve the available technologies. For groundwater, the analyzes that are carried out are to determine the degree of pollution with liquid or gaseous petroleum products. The natural state of the underground water is influenced by the characteristi...

Excessive iron causes hygienic and technical defects in the supply of drinking and service water. Even small iron concentrations can cause excessive bacterial proliferation, which, from a hygienic point of view, adversely affects the properties of water, such as turbidity, color, taste. In the case of small water sources, it is not appropriate to use demanding technological assemblies. Adsorption to a suitable adsorption material is most commonly used for water treatment. Compared to synthetic zeolites, the afford...

Forests and the land where the forests grow are some of the key natural resources in Latvia. Forests occupy half of the total area of Latvia. Unlike other countries where deforestation is a problem, the forest area increases in Latvia owing to natural and artificial afforestation activities. The paper analysed changes in the reforested and afforested areas in Latvia in the period 2007-2017 and found that the most essential factors contributing to the reforestation and afforestation were national and European Union...

The road and rail infrastructure together with the technical infrastructure is a determining factor of the present daylife of human society, function of cities and municipalities. With the internationally developing cooperation and business within the European countries, the number of transport constructions of the motorway character grows over the areas, where it is necessary to build from the technically operational reasons extensive flyovers or tunnel constructions. The number of these constructions must meet r...

The objective of this paper is to analyze the performances (capacity factor, rated capacity, operating capacity, annul electricity production) of some of the most used wind turbines in nearshore and offshore operations. The target area of this study is the Black Sea. More precisely, twelve points were chosen for this analysis. The wind fields (zonal and meridional velocity at 10-meter height) from four datasets were used to assess the wind turbines performances. The first one is ERA-Interim. This dataset is a glob...

Volatile organic compounds (VOCs) play an important role in the IAQ evaluation process. Chemical contaminants emitted by dry building material and indoor equipment influence long-term indoor air quality. VOCs adversely affect both occupant comfort, productivity and health. Most of the health hazards related to VOCs emissions occur during the first months of occupation or after refurbishing the building. At present, most people generally spend up to 90% of their daily time in the indoor environment. Humans spend al...

Oxidized ferruginous quartzites are located within BIF deposits of the Precambrian iron-siliceous formation. They form thick layers, which overlap magnetite quartzite varieties - basic minerals for mining and processing enterprises. Oxidized ore bodies are located in the lower parts of section of weathered rocks and their thickness varies from the first tens to hundreds of meters increasing from north to south along the Kryvyi Rih structure. Main questions of commercial significance definition of oxidized ferrugin...

This paper depicts the early phase of development for an integrated system tailored for emergency response actions and remote sensing. This paper focuses on the support system envisioned as an integrated Unmanned Aerial System (UAS) system that consists of one or more ultralight multifunctional aerial units with a configuration that can be adapted to the nature of the intervention: monitoring, mapping, observation and logistics etc. Starting from wing airfoil and material selection and ending with the experimental...