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Abstract. The possibility of obtaining biofuel and producing electricity in microbial fuel cells is shown when using the industrial cellulose-destroying Clostridium acetobutylicum strain VKPM-4786 as a bioagent. Substrates for microorganisms in MFC were cellulose, glucose, birch sawdust, starch, sludge-lignin, substandard potatoes, peptone. Calculation of the power of the MFCs under investigation (for 2 days of work) showed that the most effective among them was MFC based on a liquid nutrient medium with the addit...

The paper addresses the main strategic benchmarks of the urban water supply and sanitation systems. The authors have studied the results of the biggest Russian urban water supply companies operation for the last three year period. The indicators that were considered: financial profits, investments, losses of water, the structure of costs etcetera. The results were compared with world level parameters. Many companies have really effective investment programs. This activity is related with, on one hand, the forthcom...

In-situ combustion is an effective enhanced oil recovery (EOR) method for heavy oils. Whether an in-situ combustion process can be applied successfully or not depends on how the combustion process of crude oil behaves in reservoir after air injection. The oxidation process of crude oil in the reservoir is always accompanied with the pyrolysis process. Therefore, it is very essential to investigate the pyrolysis behavior of crude oil. However, the composition of crude oils is very complicated, which makes it diffic...

In the second half of the twentieth century and in the beginning of the twenty first century finding the ways of regulating of economic development and preserving the natural environment remains the most urgent task of the world scientific community. The issues of coordination of further socio-economic development and environmental protection remain an important problem in many regions, especially in territories with environmental restrictions because of the exceptional value of the natural complexes of Lake Baika...

This study aims to highlight relations emerging between vegetal organisms and water factor. The water input in an ecosystem is realized mainly by: precipitations, water vapors from the atmosphere, fog, dew, underground water, snow melting, springs, river flooding, high flow. The water losses from the ecosystem come from evaporation, transpiration and infiltration down to depths inaccessible to plants. In delineating the relations emerging between plants and the water environment, the roots system has an important ...

There are areas of extrazonal relic steppes on the territory of Yakutia in the tundra and taiga zones. They are the most extensive in central Yakutia, and sporadic squares of steppes are located in the north, in the Yana, Indigirka and Kolyma rivers basins. There are growing the xerophytic steppe plants which are separated from the main range, characteristic of the Transbaikalia and Mongolia steppes, as well as a number of invertebrate and vertebrate species of animals associated with their origin with the steppe ...

The article presents the results of the research of existing of free energy in the nature and describes the methodology and laboratory researches. The authors presented and described 3 options of laboratory samples to research the free energy in the form of a potential on different materials. In the 1st option is presented and described the results of research of the coil placed in the water. Based on investigation it is noticed that the coil placed in water does not allows to obtain the noticeable voltage. In the...

Many of the most challenging bioethical questions of our time address interactions between human health and the environment. In the past few decades awareness of the damaging effects of environmental pollution on human beings and their quality of life has increased dramatically. We have a fundamental right to breathe clean air, drink clean water and eat safe food. The idea of environmental human rights is receiving growing attention worldwide, driven by our global ecological crisis. The purpose of this thesis is t...

The term and interpretation of "risk" is analyzed in various regulatory documents, particularly in the standard of German automobile manufacturers VDA 6.3 and ISO. In their interpretation was found partial inconsistency. It is shown that the normative document of audit processes should be developed based on the requirements of ISO/IEC, taking into account the industry specifics. For this, it is proposed to separate the concept of " non-conformity of requirements" and "risk" and to identify risks during the audit p...

The first part of the paper analyses the role of renewable resources in the production of electric and thermal energy in Romania. It was taken in consideration also the wood mass destined to heating the population, as a large number of households still use this fuel exclusively. Starting from the plough land and its associated production, there is the availability of agricultural biomass possible to use for energy production. The paper is concluded with the final considerations on the benefits of using biomass for...

Pd-catalyzed reactions are one of the most widespread in fine organic synthesis. For example, selective hydrogenation of alkynols is used for production of a large variety of terpenoids and also fat-soluble vitamins. The challenge in hydrogenation of triple carbon-carbon bond using Pd nanoparticles (NPs) is to provide high activity, selectivity and stability of catalytic system. This work is devoted to the investigation of the influence of the type of anion (OH-, CO32-, PO43-), which was introduced in the catalyst...

In 1972 at United Nations Conference on the Human Environment in Stockholm was proposed the program of ecological monitoring, which examined the biosphere reserves as the essential part of conservation policy. After that conference, the Soviet Union took the official responsibilities of establishing biosphere reserves on its territory. In 1976 the Soviet academy of sciences established the project of fire biosphere reserves in different parts of Soviet Union to expand ecological monitoring from local to national l...

For Romanian agriculture is essential to promote products based on natural extracts. Seaweeds extracts, humic acids, and other natural compounded often enhancing growth, development, abiotic stress tolerance or ability to tolerate plant disease. Many articles show results of using seaweed extracts as biostimulants to improve tolerance to drought or salinity. Most products are extracted from marine algae belonging to the Ascophyllum nodosum species. In our research, we tested the role of SuperFiftyВ® 0-0-8 in reduc...

The present study aims to highlight the importance of the vegetal organisms, in restoring the natural balance, based on field research. The vegetal layer under its multiple aspects and the complex processes taking place in its framework, as well as its relations with the environmental factors, constitute an essential element in the natural circuit of the environment and a basic component of the geographic layer, indispensable for a complete characterization and understanding of the structure and dynamics of terres...

The paper presents a structural model of the smart farm to improve environmental protection. This model is based on a digital platform that integrates all the elements that participate directly or indirectly in decision-making into agricultural farm.Retour ligne automatique An intelligent farm must manage optimally and efficiently in the spirit of sustainable agriculture and environmental protection the following components: agricultural lands, farm energy balance, inputs and outputs in accordance with the applica...

This paper presents the effect of fertilizers with nitrogen and phosphorus, applied both unilaterally and in different combinations, on the quality of wheat grains during the period 2014-2017. In this regard, the research was carried out on Ciprian wheat variety, created at SCDA Lovrin, in a long-term experience with fertilizers, founded in 1967. In addition to genetics, the climatic factor and the technological factor play a fundamental role for obtaining superior quality productions for winter wheat, to the deep...

An important source of hydrocarbons is coal which is often associated with oil deposits. In the Volga-Ural oil and gas province (Russian Federation) coal resources in the Visean deposits of the Carboniferous Period exceed 3.5 billion tons. They are located at depths of about 1 km and are inaccessible to mine operations. At the same time, coals can be exploited by well methods as a source of gaseous raw materials. The power gas from coal seams can be used in the development of deposits of high-viscosity oils in adj...

After more than 40 years of production results indicated necessity to refine the geological model of Sarmatian fluvial reservoirs in an onshore oil field of Moesian Platform , Romania. A stratigraphic analysis was developed to build a new stratigraphic?structural framework. The new 3D seismic was used to incorporate structural data by mapping the system of all normal faults and the unconformity. A new image have been developed for the incised valley. Using concepts of sequence stratigraphy, 3D seismic, biostratigr...

This article presents the effectiveness of three-component geoacoustic research. It is shown by dividing vertical and lateral fluid motions, which makes it possible to reveal and research the casing, interlayer, and interlayer flows of different contents and origin in the hydrocarbon deposits. Geoacoustic signals occur naturally in boreholes because of the dynamic processes located in the volume of near borehole space. The processes are linked with fluid motions (water, oil, gas) or cracks forming inside the rocks...

Building stone quarrying companies in the Republic of Karelia commonly have limited information on the geological structure of a deposit. They do not have their own geological survey, and this type of service is not yet properly offered in Karelia. When product quality problems arise, it is difficult to rapidly find the correct solution. The quality of raw materials at any quarrying stage can be analyzed using GIS applications at the initial stage of quarrying in order to collect and systematize information on the...

The most crucial factor influencing economic development and social well-being, as well as resulting in the mitigation of the effects of social poverty is electricity and its availability. As a result, a given country?s growing economy generates an increasingly higher demand for energy. Even though the generation of electricity in the Polish power industry is still primarily based on fossil fuels, there is a visible increase in energy produced from renewable sources. In 2016, in Poland the share of renewable energ...

Due to a nuclear power station accident in Chernobyl the soil, agricultural crops and biomass were contaminated by radiocaesium, in other words radioactive caesium (137Cs) within the Czech Republic. Focused on long ? term contamination, the most important element is the radiocaesium (137Cs), which is absorbed by both the human organism and the plants and is still deposited in the upper layers of the soil. Experience not only from the Chernobyl and Fukushima disasters has shown that public access to up ? to ? date ...

Rare earth elements form the group of 15 elements from the lanthanide group (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and two elements from the scandium group (Sc and Y). The lanthanide group can be divided into two subgroups: Light Rare Earth Elements (LREE) and Heavy Rare Earth Elements (HREE). The variability of the content was determined for LREE (Ce ? cerium, lanthanum ? La) and elements from the scandium group (Sc ? scandium, Y ? yttrium). The analyzed samples of bituminous coal were c...

For the tests a coal seam no. 209 of the Piast-Ziemowit coal mine has been selected, which is located in the south-eastern part of the Upper Silesian Coal Basin (USCB). The basic material of the study was the results of laboratory analysis of sulfur and ash content from the furrow samples taken in the mining excavations of the coal seam no. 209 Piast-Ziemowit coal mine. The main objective of the research was to analyze the structure of variability of sulfur and ash content in hard coal using statistical and geosta...

Establishing public policies that result in decision-makers and citizens who are much more active when drafting, using, or pursuing how to implement strategies on proposed goals through sustainable development. Romania's National Strategy on Sustainable Development is based on the European Union Strategy for Sustainable Development with the set-ups set in Lisbon, and it is meant to be a binder for the elaboration and establishment of new public policies, which have the effect of changing the attitude of the societ...

D?mbovi?a River flows through Bucharest, capital of Romania, from NW to SE, bringing something from the nature in our capital. Since 1986, at the entrance in Bucharest, in order to control floods, it was realized Lacul Morii reservoir and the riverbed of D?mbovi?a was regulated along the city. ?Lacul Morii? reservoir is the largest lake in Bucharest covers an area of 246 ha and has as other potential water uses: providing water for CET Groz?ve?ti, irrigation, pisciculture, production of electricity. The reservoir ...

Braking using the eddy current induction phenomenon is used in traction systems, retarders supporting the truck braking system, but also in the testing of rotating machines to create artificial loads. In addition to the desired phenomenon of interaction between the magnetic field generated by the electromagnetic brake coils and the field created in the brake disc as a result of induced electromotive forces causing eddy currents, during the brake operation is generated heat that is the effect of the eddy currents t...

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...

Growth in the world economy requires an increase in global energy demand. And oil remained the world?s leading fuel, accounting for a third of global energy consumption (BP?s Energy Outlook, 2017 edition). However, the amount of conventional light oils is rapidly declining due to long-term and largely-scale extraction. Therefore, to relieve the pressure exerted on conventional oil resources, it is imperative to efficiently develop and utilize those unconventional oil reserves. Heavy oil is considered as an alterna...

The purpose of this study is thermodynamic simulation modelling of physicochemical conditions of the high-grade gold ore formation in the hydrothermally altered host rocks at different levels of erosion. In modelling, equilibrium mineral assemblages in the ores were obtained by minimizing the Gibbs free energy of chemical processes. The thermodynamic modelling of gold deposition was based on mineralogical-petrographic volumetric mapping and quantitative phase analysis of the ore and host rock samples. The high-gra...

Plastic is often one of the major components of municipal solid waste and its processing product Refuse Derived Fuel (RDF) and thus, waste plastic is an alternative energy resource of importance for implementing Waste-to-Energy strategy. The aim of this study is to investigate the thermal decomposition characteristics by means of thermogravimetric (TG) and derivative thermogravimetric (DTG) analysis of plastic commonly found in municipal solid waste from perspective of possibilities to use gasification as a proces...

This paper proposes a forecasting model based on time series technique for solar energy generation. The increasing use of renewable energy from solar and wind sources has gained acceptance and is being increasingly used. The main problems with these energies sources are the dependence of power output on the environmental parameters and the circadian variation. In order to obtain a continuous time series, average daily specific power records, W/m2, are used and moving average and exponential smoothing were tested t...

The time-dependent seismicity along the North Anatolian Fault Zone (NAFZ, 38В°-42В°N, 23В°-42В°E) is examined by means of the Decelerating-Accelerating Seismic strain release (D-AS) model. The model relies on observations of decreasing Benioff strain release several years before a strong earthquake, in the vicinity of the fault to be ruptured (seismogenic region), and increasing strain release in a broader area around this fault (critical region). Both patterns are manifested by moderate magnitude earthquakes (pre...

Terrestrial and submarine mud volcanoes of the Taman Peninsula are confined to the continuation of the Temryuk-Kerch anticline zone. Many of them, especially submarine volcanoes, are characterized by periods of active spontaneous activity. Mud volcanoes are of interest as not only objects that can have a negative impact on the natural environment, but also as sources bringing benefits in the form of erupted mud masses that are used to treat people. Up to this point, the question of the depth and temperature of the...

The paper consider the impact of the view on petroleum origin on the strugegy its exploration. The petroleum is complex, natural Self-organizing system. Its genesis, migration and accumulation in a pool is discrete process not associated with Biosphere matter and energy. Hydrocarbon (HC) molecules are generating during their migration thought Lithosphere layers under catalytic interaction with their selves and rocks. The structure and composition of the HC molecules different type appearing during the stages of th...

In model experiments, the influence of various media on the degree of transformation of kerogen of the Domanic rock in hydrothermal processes was studied. The object of the study was a sample of the rock, from the interval of depths of 1712.5-1718.5 m of the Semiluki-Bureg (Domanic) deposits of the Berezovskaya area of the Romashkinsky deposit, which is a dark gray marl alternating with limestone. The content of OM in the rock is 11.73%, according to the thermal analysis data, a significant part of which (9.56%) i...

Allocation of electricity exchanges between bidding zones represents one of the major challenges of European Electricity Market. Initially, it was an ATC capacity basedallocation mechanism for electricity markets. Currently, a powerflow based allocation method it is intended to be implemented. Starting from the premise to more efficiently use the transmission networks, the authors addressed the issue of transmission capacity and their related transmission costs allocation from theperspective of zonal approach. Aut...

A total number of 22 tsunamis were generated in the Black Sea in the past, as stated in the literature. Three from the twenty-two events were triggered by earthquakes occurred in Shabla area, the most dangerous one for the Romanian and Bulgarian shores, as follows: the oldest one, in Bisone area, 1st Century BC; year 543-544 AC, an earthquake of 7.5 M triggered waves of 2 - 4 m; the most recent, on 31st of March 1901, a 7.2 M earthquake generated 2.5 - 3 m tsunami waves, or 5 m according to other sources. The TRID...

The first major crisis in the history of the economy was "Tulip Mania" in Holland in the 1630s. Tulip, a flower spread in Iran, Turkey and Afghanistan, was first studied by the Flemish botanist Clusius, who brought the first bulbs to Europe at the end of the 1500s. He planted the tulips in a "study garden" of the University of Leiden. The interest of the people for the beautiful flower, called by the Iranians "Laleh", has been great since the beginning. Clusius notes that in 1598 the thieves stole 100 bulbs in one...

Present article contains new data on detailed study of typomorphic features of placer gold of the Krutoy creek (Khatyrkhay ore-placer cluster, Southern Yakutia). Basic typical characteristics of native gold are identified: granulometry, morphology, chemical composition, trace elements, micromineral inclusions and features of inner structure. Used traditional complex of analytical methods of studying placer gold allowed obtaining information about mineral type of primary mineralization and identifying association b...

Presently intensification of heavy oil production, particularly by applying various catalytic systems, is very attractive and relevant task for many researchers. Catalysts intensify a destruction process of high molecular compounds such as resins and asphaltenes. Thus, providing irreversible viscosity reduction of nonconventional crude oils. In this regard, investigation of ultra-dispersed catalysts based on transition metals is of current interest. The small particle sizes of catalysts yield a strong activity dur...

Direct and inverse problems of propagation of elastic waves in an inhomogeneous soil are considered. Based on the analysis of the vibrational field, the associated tasks of vibrational ecology are solved. These problems arise because of the impact of transport and construction equipment in the city. The propagation of elastic waves in the soil can lead to large levels of vibration on the surface of the earth and create unsatisfactory conditions away from sources. Transport, and especially the subway, have the stro...

Silesia Province, which is located in the southern part of Poland, belongs to regions with the most degraded lands in the whole country. According to the ?Environmental Protection 2017? (in Polish ?Ochrona ?rodowiska 2017?) report, prepared by the Central Statistical Offiice, in 2016 there were about 4900 ha of devastated and degraded areas in Silesia Province, which required reclamation. The reason for the occurrence of degraded lands in this area is the intensive exploitation and processing of natural resources....

Since thermal energy is one of the most environmentally hazardous industries, the issues of environmental compatibility of thermal power stations (TPPs) construction are the priority. One of the main supporting pre-project documents on projected construction of TPP is a report on its environmental impact assessment (EIA). Due to the diversity of technology options for generating electrical power, as well as differences in natural and man-made, economic, social and other conditions of the territories intended for T...

Biodiesel is well known alternative energy source to conventional fossil fuels. The most common production method of biodiesel is vegetable oil transesterification with methanol, which leads to glycerol formation. Increasing worldwide production of biodiesel causes considerable surplus of glycerol. To solve this problem, biodiesel production method from vegetable oil via interesterification is topical, via interesterification gycerol can be replaced with by-product, which is not necessary to separate from the biod...

The aim of research was to develop technical conditions for theproduction of biodegradable polymer films with usage of native and modified maize starches. The expected effect is the expansion of the range of modifying components for biodegradable polymeric products based on low density polyethylene and the reduction of pollutants emissions into the environment. It was determined a ratio of components for the production of thermoplastic starch (TPS) and parameters of extrusion processing of polyethylene and plastic...

The diversity of sites with a high proportion of metals is characterized by the occurrence of specifically adapted microorganisms. Their identification and subsequent accurate genotypic and phenotypic characteristics are a prerequisite for further practical applications, especially in bioremediation processes. The article deals with evaluation of biochemical features for fenotypic identification of bacterial microorganisms. 30 new isolates of gram-positive microorganisms of genus Arthrobacter, Bacillus, Brevibacte...

The relationships between vessels and water environment in which they do exploitation tasks are presented in this paper. In conjunction with that fact that vessels are the biggest means of transport, they also have the biggest propulsion units having substantial influence on polluting the natural environment. Therefore an attempt of analysis whether replacing liquid hydrocarbon fuel with alternative fuels reduces degradation of the environment was made. For this purpose an analysis of alternative fuels, mainly bio...

Forecasting a demand for hard coal is no easy feat, especially at times when there are constant transformations of the country?s energy mix structure. This stage should be realized in every mining company as grave mistakes in estimating a prospective sale may result in a disadvantageous economic situation of a company. The article presents an autoregressive model which mining companies may use to analyse the predicted sale of a raw material in order to plan an action strategy based on the achieved results.

The article herein concerns direct conversion of thermal energy into mechanical energy of fluid motion by means of a specially designed thermomechanical pump. The conditions of fluid boiling in constraint environment were considered. The peculiarity of fluid evaporation in constraint environment when no natural convection is developed in the tubes is periodic overheating and explosive growth of vapour phase which leads to shooting the fluid out of the tube. Vapour slugs formed under slug boiling conditions are the...