Browse

A long-term prediction of coastal profile evolution is done basing on several years' measurements. The adopted diffusion model is first calibrated against real data obtained from over more than 20 years measurements, and then extrapolated. A realistic prediction is then made by solving numerically a diffusion equation with coefficients obtained by the extrapolated values. In previous studies, taking into account the time dependence of the coefficients, we were able to reduce to 10 years the number of time measurem...

More than 50% of the world?s populations live in urban areas, and they emit almost 80% of global carbon dioxide. They are also responsible for 75% of energy consumption in the world. That increases pressure on food, water, and especially energy. These facts imply that there is an urgent need to provide low carbon dioxide level in cities with efficient and renewable energy to foster the growth of the green economy. Therefore, attention should be paid to renewable energy sources such as the Sun and be aware of the p...

Low velocity compressional wave (P-wave), Vp values, have been observed from the lunar geophysical measurements made during the Apollo 14, 16 and 17 missions. These low velocities are attributed to lack of water, low soil compaction as well as the non-consolidated nature of the regolith. The microgravity lunar regolith simulant velocity experiment (?-SVeLSE) aims to determine if there is any dependence of gravitational force on the seismic longitudinal velocity measurements and thus correlate with data previously ...

The preliminary palynological results of analysis a 524 cm long continuous sediments core from the Lake Big Miassovo (South Urals, Russia) are presented. The core was collected in July 2018 from central part of the lake from a depth of 24 m. Palynological stratigraphy has been divided into four pollen zones on the basis on changing pollen abundances and taxa composition. The predominance of Betula pendula, Pinus sylvestris and Artemisia pollen in sediments has been established. The prevalence of desert plants (Art...

Snow cover is an important climatic factor and its changes have a strong influence on water resources and water balance in Bulgaria, as well as on the development of agriculture, tourism, transport and others. The main objective of this study is to analyze the long-term time series of snow cover depth and snow or mixed precipitation types, as well as to summarize the results for each administrative district in Bulgaria. Data from 246 weather stations of the meteorological network of the National Institute of Meteo...

Investigations on coke-bed relations with acidic manganese ores have been reported number of times. The correlation between the mineralogy, property, reactivity of the ore and the products during the production of high carbon ferromanganese have been reported. A theoretical study has proven that the energy consumption of different basic South African manganese ores were very dependent on the chemical composition of the feed. This has a direct impact on the phases that form in the prereduction, reduction and conseq...

Previously we have developed the PLGA nanoparticles loaded with doxorubicin (PLGA-DOX NP) that demonstrated a high anti-tumor effect against the rat glioblastoma in the preclinical studies and is now being evaluated in the clinical phase II study. This formulation was obtained by a generally accepted homogenization ? solvent evaporation technique followed by freeze-drying. The purpose of the present study was to explore the feasibility to simplify the process of the nanoparticle preparation by replacing a freeze d...

The purpose of the paper has been presenting the evolution of concentrations for four main air pollutants in Craiova, so as to show the situation of air quality in this major city in Southern Romania, also finding the best statistical model to fit the recorded data for particulate matter with diameter of less than 10 microns transported by the wind within the urban area. In order to accomplish this purpose, experimental data have been gathered during the entire year 2018 in the above-mentioned town, by two air qua...

The article will attempt to highlight the contemporary problems faced by local selfgovernment in the conduct of environmental policy in the administrative-territorial units. The role of the administrative and territorial units in the organization, management and control of the implementation of the environmental policy in the municipality will be presented in accordance with the areas of competence and the possessions. We will also try to outline the distribution of the responsibilities of the local authorities an...

The goal of this paper is to highlight problems of development modern approaches to design the ecological innovation systems on different levels of organization. There is investigation the role of environmental innovations in solving some ecological and economic problems for providing ecological safety and sustainable development. The functional model of the environmental innovation system has been developed. This model is based on system approach and analysis of innovation process. The unified structure of the gl...

Model for a change of the biosystems states on the grounds of Markov chains is offered in the work. One of the main problems of management of the biosystems states is the study of the mechanisms, which determine dynamic features of the processes, taking place in the natural environment. Therefore, there is a necessity in the development of special methods, allowing to study dynamic properties of natural objects without subjecting them to ruination. Naturally, a mathematical modeling method may satisfy this demand ...

The significant centres of settlement on the territory of the Czech Republic have also their suburbs aside from their core areas (centres). The dynamics of outflow of population from city centres to suburban areas influences significantly the global character of a city as such. The influence of suburbanization is currently evident in all larger residential centres. The urbanization of rural population and the extension of administration boundaries of cities lead to distinguished and mutual interaction of the neigh...

An increasing proportion of waste in megapolicies belongs to food waste, including waste of food industries and catering. Currently, this type of waste is practically not processed in Russia and disposed in landfills. However, technologies for food waste processing are known and include composting, accelerated anaerobic digestion, biogas production, etc. This paper discusses the innovative technology of food waste use in the form of a substrate for growing black soldier flies (Hermetia illucens) to produce melanin...

The article deals with the design of an alternative meteorological network, whose inexpensive metering devices would be installed on non-specified mobile means or at general aviation airports to collect selected spatial data. It analyzes the need for a minimum level of equipment for meteorological measurement systems to ensure the professional collection of analysis and visualization of specific spatial data. The process of analyzing the collection, analysis, and visualization of specific spatial data will also be...

Phosphates are one of strategic mineral resources that provide the food safety of any country. The specific feature of the raw-material base in the Kola region is the endogenic type of apatite deposits. All industrial reserves and resources of apatite-nepheline ores (ANO) are confined to PZ alkaline-ultrabasic carbonatite complexes and, mainly, to the Khibiny massif (KM). 15 unique apatite-nepheline deposits and occurrences are located here. Some of them are the world-class scale. ANO of the KM are highly eco-frie...

The relevance of the results. The experience of the EU countries shows that the process of involving regions in innovative development can be successfully carried out on the basis of "smart specialization" of the regions. A number of specialists consider "smart specialization" as a basis for the formation of both innovation and socio-economic policy. "Smart specialization" of regions allows to achieve 3 main goals: to choose priorities of interregional interaction; to involve in this process various organizations ...

The study was conducted to study the effect of cerium dioxide nanoparticles on the survival of zebrafishand the microbiome of their intestines. With respect to the intestinal microbiome in the control group, it was registered that the majority of the identified bacteria belonged to Proteobacteria. A peculiar action of CeO2nanoparticleson the intestinal microbiota was an increase in the number of Firmicutes, in particular, Bacilli class bacteria, and a decrease of Proteobacteria phylum, it was manifested in the flu...

The paper solves the actual problem of assessing the quality of data transmission over atmospheric optoelectronic communication lines in computer networks. The topologies of the simplex infrared data transmission channel are analyzed. The calculation of the optical system is reduced to determining the fraction of the radiated infrared power that falls on the photodetector. The total loss of the optical information signal is determined due to the mismatch of the parameters of the transmitter and receiver of the inf...

The increasing amount of fiber on wheat flour brings some deleterious effects on dough structure, such as the increasing of dough stickiness and fermentation tolerance decreasing. Also it has a negative influence against other properties of dough such as handling and rising properties. Fiber addition usually causes a decrease in bread volume and breadcrumb loses its elasticity. So, we had investigated if the xylanase addition could counteract those deleterious effects. Positive action of xylanase in dough could be...

The quality of life is one of the frequently discussed topics nowadays, not only in the academic sphere but also within the international policy-making institutions. In the past decades, dozens of complex methods for assessment of the quality of life have been developed. Different approaches can be applied regarding the quality of life evaluation. For many applications, a simple evaluation combining both the subjective and objective information and oriented on the ?life results? (means indicators of the good life)...

Factor analysis of three-hour dynamics from the winter solstice 22.12.2013 to 21.12.2014 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, 2917WMO_ID=27485). The sample capacity was 2917 rows. The correlation coefficient increased to 0.5065, which is more than 0.4583 for a seven-year data set. The ranking of the factors changed only for depend...

Factor analysis of three-hour dynamics for the vegetation period of birch leaves from 01.05.2014 to 30.09.2014 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, 2917WMO_ID=27485). Power sample consisted of 1222 of the row. The correlation coefficient 0.4677 is less than 0.5065 for the year between winter solstices, but slightly more than 0.458...

In recent years, due to the rapid development of astrophysics and the capabilities of modern technologies, a huge amount of astronomical data such as type Ia supernova, cosmic microwave background anisotropy (CMB), acoustic baryon oscillations, weak lensing and large-scale structure have been obtained. In this regard, a fundamental discovery was made, which showed that our Universe is expanding with acceleration. To describe this phenomenon, many models have been created. One of the main directions is the modifica...

Factor analysis of three-hour dynamics from 01.01.2012 to 31.10.2018 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification (weather station Yoshkar-Ola, Russia, WMO_ID=27485). Power selection when accounting periods of the growing season of birch from 01.05 till 30.09 made 8558 instead 19713 lines in comparison with the continuous series, while there have been significant changes in the laws. The coefficien...

Factor analysis of three-hour dynamics from 01.01.2012 to 31.10.2018 of four meteorological parameters: atmospheric pressure; air temperature; relative humidity; dew point temperature was carried out by the method of identification of stable regularities (weather station Yoshkar-Ola, Russia, WMO_ID=27485). The sampling rate was 19713 lines. It is proved that pair connections allow to study quanta of weather behavior for different periods of time: long-term, annual, seasonal and period of plant ontogenesis. There a...

The funds for disbursement of unused amounts must be required by the need for population mobility to provide a rich set of spatial solutions for separate regions living in the country. This determines the size of this type of transport in its domestic, labor, educational and other daily routine. Against the backdrop of global improvements in the handling of goods transport from all countries, there is a downward trend both for the passengers and freight forwarders. This applies to the degree of retention of areas ...

The aim of this article is to present the possibility of incorporating the existing railway network into the transportation service system of the Krakow Metropolitan Area. The author discusses the problems and opportunities related to adapting the existing railway network to the emerging functional and spatial structure and the options of using it to make this area more accessible. Research done by the author focuses on the current condition of the railway infrastructure in the aspect of its functional and spatial...

Frozen fish is the primary raw material used in the industrial preparation of semi-finished ready to eat fish-based products. Ready to eat fish product manufacturers receive frozen fish raw materials from suppliers and defrost it before processing. Such raw materials are commodities; frozen fish are easily transported around the world, can be stored for a long time, and used for further processing as required, evenly distributing the company?s production capacity throughout the year and, thus, optimising costs. No...

In this paper the author answers the question about competitiveness of post-industrial areas against undeveloped land. The analysis concerns potential consequences related to the investment on former industrial areas and undeveloped areas usually located in suburbs or in city?s outskirts. In the research potential different costs were examined: social, economic, environmental and spatial costs of the investment of the two mentioned types of sites. The results shows that there is a number of negative phenomena in p...

Problems occurring in post-industrial areas constitute large issue in social, economic, spatial as well as ecological point of view. According to research of National Institute for Spatial Policy and Housing post-industrial areas occupy 4% of urbanized areas is Polish cities. Poland among European countries is one with the biggest percentage of post-industrial areas in cities. In the context of large scale of degradation of cities re-use of former industrial areas ? brownfields - is one of the challenges of ration...

This paper addresses the problem of atmospheric pollution due to the scrapping of motor vehicles. Most of the materials used in the automotive industry are non-renewable, so the decommissioning of cars is a global problem. The environmental impact of this type of pollution is irreversible. In Romania, this problem is amplified by the purchase of second-hand cars that have a low life expectancy and are much earlier in the situation of being scrapped. Recovery of scrapped materials must be done selectively because a...

Natural zeolites are able to remove lower concentrations of contaminants present in groundwater and drinking water through ion-exchange process. The main objectives of this work were: (1) to determine the efficiency of different types of regenerants: NaOH 0.5 M, NaCl 0.5 M, NaClO 0.5 M and NaClO:NaCl (1:1) 0.5 M; (2) to investigate the effect of initial pH (5.7 - 11.7) and molarity (0.5 - 1 M) of the regenerants; and (3) to determine the removal capacity of natural zeolite for ammonium removal after ten (10) sorpt...

From fast-growing plants, Miscanthus is a promising alternative energy source exploitable at regional level. The climatic conditions in the region also have a significant impact on the biomass production and also on the economic efficiency. The aim of the paper was to evaluate the influence of selected climatic parameters on the total production of the above-ground biomass of two Miscanthus genotypes in the Nitra region in the Slovak republic for the years 2015-2018. The method of monitoring climatic parameters an...

Construction and subsequent operation of buildings fall among the main consumers of material and energy resources, while contributing to environmental pollution. Sustainable building construction therefore responds to the requirements of sustainable development and introduces a new approach to the design, construction and operation of buildings with the aim to reduce negative impacts on operating costs and thus on the environment. Operating costs generally represent the sum of the costs incurred for the operation ...

The European Union ?circular economy? aims to maintain the value of products, materials and resources for as long as possible, minimizing the generation of waste by recycling and reusing them [1]. The leather industry generates large amounts of waste, more than 55% of raw material (hides and skin), and over 99% are stored at the landfill [2, 3]. Part of these waste generated are untreated solid waste (hide and skin), meaning around 500-600 kg per ton of raw hides [4, 5]. A way to valorize the untreated hide and sk...

The tremendously increased energy needs due to advancement in technology have put pressure on electric grids. The conventional grids cannot bear that extra load. Although the availability of renewable resources (solar, wind, hydro and biomass) at a large scale have great potential to offer environment friendly energy solutions, however, the compatibility of Distributed Renewable Energy Sources (DRES) with existing conventional grids in developing countries is a serious concern. Therefore, the issue of growing elec...

The tensile properties of conveyor belts significantly affect their use in practice. Research is focused on the determination of the influence of sampling direction on the tensile strength and the elongation of 3 types of fabric conveyor belts. The carcass material determines the tensile properties of the conveyor belt. The carcass of a fabric conveyor belt is formed by several layers of textile plies. The textile plies are created by crossing the system of warp and weft fibres. The warp represents a set of fibres...

Intervention and rescue activity in special conditions can be conducted under special requirements only by trained and authorized personnel using personal protective breathing equipment. The decisive factor for the success of an intervention and rescue operation in toxic or chemically aggressive environments lies, among others, in optimum and efficient design of rescue personnel?s training process, in connection with their testing in environments with high temperature and humidity. Heat is normally generated as a ...

This paper presents the stages of embryonic and postembryonic development in Polyodon spathula (Polyodontidae) under the conditions of the acclimatization area at Fish Culture Research and Development Station Nucet, Dambovita county, Romania. Embryonic development at the paddlefish is carried out in the temperature range of 14-18o C with an optimum of 16o C. For the induction of maturation and ovulation, the Nerestin 5A hormone was used. The size of the eggs is between 2.7-3 mm and light gray to gray-black in colo...

More than 400 geodetic and cartographic documentation centres are active in Poland; they are maintained by starosts (heads of districts) and presidents of cities with rights of districts at the level of heads of districts, or cities with rights of districts. In particular cases those centres are maintained at the municipal level, if a relevant agreement has been concluded with a mayor or a president of a city which is not a district. At present the method of producing maps for design purposes is regulated by two l...

The rapid developments of science and technology, as well as the restructuring of the extractive mining industry, have led to massive changes in the structure and complexity of mining equipment. Mining units must provide an advanced level of mechanization and automation, thus ensuring increased productivity and safety. The use of modern information technologies for surveillance and monitoring of high complexity technological facilities is a topical issue. By monitoring the main functional parameters of excavation,...

The garlic crop is made by planting bulbs and they can easily pass through many herbicides that are applied to the soil due to the vigor of the garlic emerging seedlings. However, some weeds, especially those with large seeds, can also pass through the superficial layer of herbicide so that they can cause great damage to the crop. These weed species, such as cocklebur (Xanthium sp.) or velvet leaf (Abutilon theophrasti) can be controlled in postemergence with Goal 4F herbicide. Other herbicides, as Lontrel (clopyr...

The paper approaches a series of researches that concern the finding of a solution for modernizing the cutting wheels of the extraction tower of Slanic Prahova salt mine. With this in view and starting from the observation that the former solution is worn out, a new variant has been conceived and designed in order that it might be applied to the structure of the extraction tower without important changes. Specialized software has been used for the assisted analysis and designing, which is able to provide the corre...

The geotechnical characteristics of rocks influence their behavior in terms of their strength and stability. Changing the geotechnical characteristics of the rocks is the direct cause of the loss of the natural balance of the slope when the resistance forces defeated by the sliding forces. Influence factors, which may be of geological, hydrogeological, hydrometeorological, climatic, seismic, biotic, anthropic, mechanical or geomechanical nature and occur in time and space on rock massifs/deposits, determines the c...

The article presents researches on the use of drones in agriculture. Going away from military and espionage applications, like many other inventions of mankind, drones have finally come to peaceful applications. The inclusion of top technologies in the construction and endowment of drones has made these devices very useful in many applications, such as: industry, agriculture, health, civil engineering, environmental protection, local administrations, security and guarding, transport, etc. In the literature, variou...

Restructuring of the exploitation of the coal deposit in the carboniferous area of the Jiu Valley in Romania is part of a quarter-century closure program and the use of minerals has been reduced by 10 times compare with the production achieved at the level 1989. In the last 10 years, the use of the coal in the steel production was abandoned, the production being processed only for electric and thermal energy needs. At present, 4 production units (Lonea, Livezeni, Vulcan and Lupeni) are operating in this area, out ...

In this article, I will focus on the possibilities of recycling aluminium chips and chips from aluminium alloys. Recycling can be divided into conventional recycling, by remelting the material, or the unconventional method of recycling it in its solid state, in which the chips can be transformed directly into dense bulk materials. The advantages of this method lie in lower energy consumption, reduced metal losses, almost no emissions of harmful gases and minimum waste. In the introduction I will introduce the meth...

Riparian ecosystems play significant role both in the natural and man related activities. They are important part of the hydrological cycle and ecosystem services. They actively support many processes connected to the environment wellbeing, floods retention and mitigation, erosion reducing, river restoration. But under the climate and climate change specifics and anthropogenic works they are under continuous pressure, surely affecting their natural development. To safe and mitigate presented impacts various measur...

The chemical hazard for Pezinok District is analysed. Risk identification of the objects with high amounts of chemicals includes both industrial and the common civil objects and facilities. The highest possible number of people under the risk in case of chemical leakage as a result of terrorist attack is taken into account as well as the health consequences according the certain concentration of the chemical matter. The air pollution period and environmental impact on the fauna and flora, including soil contaminat...

RM/RA CRAMM method is a multispectral method for risk management including risk assessment process. It is used mainly for environmental, technology and social threats including major natural emergency events e.g. floods, forest fires, whirlwinds, earthquakes, landslides etc. The paper explains the logic of the method and its application though the Risk Assessment Scoreboard with quantitative inputs and outputs calculated by a simple logic function. The method respects its main sources - EN 31001 Risk management an...