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The aim of this work is to study the erosion and stability of rock cliffs. The selected sites are located in the Cuio and Kalohanda areas from the southern sector of the Baia-Farta municipality, on the coast of the Province of Benguela, central-western Angola. The fourteen studied sites are situated nearby fishing villages and present two distinct climate seasons: the rainy season and the dry season. The studied area presents a huge potential for economic activity related with tourism. The rock cliffs are mainly c...

A characteristic feature of fuel cells is a weak dependence of their energy efficiency on the scale of the installation and the ability to provide the required level of power by simply increasing the number of fuel cells. The use of fuel cells, including in combination with renewable energy sources, can mean a technological revolution in the transport sector and energy, will reduce the negative impact on the environment to a minimum level. In this paper, a review of the current state of problems and trends in the ...

The aim of the paper is to investigate the correlations between the parameters and mineralogy of agricultural soils contaminated by hazardous elements originated from the metallurgical industry. The mineralogical constituents of soil have a major influence on soil fertility and production capacity, as well as on migration and assimilation in various proportions of the elements both with nutritional role for plants and potential toxic ones. The importance of the study originates from the necessity of knowing the so...

The sustainable development of the economy of many countries is due to the stability of the oil and gas complex. Revenues of oil and gas companies form a significant part of the state budget revenues and the balance of payments. The government accumulates gold reserves by the seizure of windfall revenues of the oil companies in the period of high oil prices. In this article, we analyzed the development of the Russian oil and gas industry by the Substantial growth rate (SGR) model. In the study, the authors identif...

This article presents results of researches of genesis and physical and chemical properties of humic acids of peat stratigraphic rigging of the Ob-Irtysh interfluve, selected in the area of The Mukhrino Field Station of the UNESCO chair of Yugra State University. The coordinates of the selection: 60.89535 N?68.639033 E. Ash content of peat does not exceed 12%. The effect of botanical composition of the original plants of the peat-forming plants of peat type on the construction of the macromolecules of humic acids ...

Creation of food products with a predictable biopotential and consumer properties is an important and promising direction for the development of the food industry in the world. In this regard, the wheat germ cake is not used efficiently, which is mainly due to the low stability of their quality during storage. The initiator of the oxidative processes of the cake is a highly active lipase. We proposed the use of fumaric acid as an antioxidant and conducted research to study the effect of this inhibitor on the oxida...

In a laboratory model experiment, the effect of native pyrochars and modified pyrochars, from which labile organic matter were extracted, on substrate-induced respiration (SIR) was evaluated. Native samples of pyrochars were obtained from the remnants of linden wood at low-temperature (250°C), medium-temperature (450°C) and high-temperature (650°C) pyrolysis. Modified pyrochar samples were obtained by extracting labile fractions with cold water, boiling in hot water and treating with an alkaline solution of Na4P2O...

Particulate matter and heavy metals represent some of the most dangerous pollutants along with nitrogen and sulfur oxides and the persistent organic pollutants. They affect not only human health, but also all living things and, some of them, even the climate by light diffusion and/or greenhouse effect. Thus, PM2.5 can induce serious respiratory and cardiovascular diseases, while both PM2.5 and PM10 play an important role in the atmospheric chemical and physical processes. At their turn, even though some heavy meta...

Gypsum composites with different lightweight aggregates were studied. The importance of gypsum as one of the most environmentally friendly building binder increases nowadays and new ways of its utilization are searched. Using of aggregates in the gypsum is generally not necessary, because gypsum does not shrink, but they can be used for economic reasons or to improve the thermal or fire properties of the gypsum material. We studied the structure and properties of the gypsum composites with three types of lightweig...

The forest industry in the Russian Federation is actively developing. A large amount of material resources are invested in this industry. At the same time, technological and production equipment is being modernized, and the supply chains of forest products are optimized [1]. In the North-West Federal District of the Russian Federation in recent years, a large number of enterprises of the timber industry complex increase the volume of roundwood transportation by water transport, particularly in rafts [1,2]. To rece...

Study of the hydrogeological response to remote earthquakes is a separate scientific direction at the boundary of hydrogeology and geophysics. It?s necessary for understanding hydrogeomechanical processes occurring in fluid-saturated reservoirs. Spectral analysis is a convenient tool for estimation the relation between underground water level variations and ground displacement during passage of seismic waves from remote earthquakes. Water level variations can be classified as step-like, co-seismic and post-seismic...

The long-term response of aquatic vegetation of shallow freshwater ecosystems to the anthropogenic impacts (water level changes, pollution by heavy metals) was studied in 1999-2018 at two water bodies of Leningrad region, Russia: the Rakovye lakes and Neva bay of the Gulf of Finland, the Baltic Sea. The researches included the analysis of satellite images from 1970 to 2018, and the study of the characteristics of the aquatic plants of different ecological groups (halophytes, floating and submerged plants) -the spa...

The treatment of model solutions containing Fe(II), Mn(II) and Ce(III) salts in the range of metal ions concentrations of 20-500 mg/dm3 was carried out at the laboratory set of water purification by low-temperature plasma discharge during the registration of changes in the Red-Ox potential and pH of solutions, the ions concentration and the emission discharge spectrum. The ions concentration was measured by atomic absorption spectroscopy. The characteristic of discharge was measured with the methods of emission sp...

In this work, novel sorption material based on cellulose and polyvinyl alcohol cross-linked by calcium ions is obtained. In order to increase the oil capacity of the sorbent, the mineral glauconite, which has a natural sorption capacity concerning oil, was introduced into the cross-linked polymer matrix. The structure of the obtained polymer sorbent was studied: the method of infrared spectroscopy was used to study the effect of calcium chloride on the cross-linking of polymer components, optical microscopy was us...

This paper examines the level of vibrations transmitted to the crew on a river ship. This ship made a test cruise on the Danube, between Braila and Galati, round-trip (32Km). This cruise was done before the ship was repaired, to compare the levels of vibrations before and after the repairs and to check their efficiency. There were determined both the vibrations produced by the ship's equipment (engine, generator) and those to which crew members are subjected in the areas where they spend most of their time. To det...

In building materials, under reduced pressure, a significant improvement in thermal insulation properties occurs due to the elimination of conduction and flow through the gas phase filling the pore system of insulators (in case of the most insulators). This effect is used in the manufacture of vacuum insulating panels. In earlier times, vacuum insulating panels have only been produced with glass wool or SiO2 based insulators, but alternative insulating panels have also begun in recent years. These insulators are t...

Neurodegenerative diseases such as Alzheimer's and Parkinson's affect an increasing number of people. Their etiology is related to the formation of fibrils and protein aggregates. Therefore, new therapeutic strategies and compounds are required to prevent aggregation of ?-amyloid (A?) peptides. There are some neuropeptides that play an important role in the immune regulation, as well as in neuroprotection; therefore, they might be possible candidates for future drug development. Consequently, our experiments were ...

As a basic number, a genealogical line of Holstein-Friesian cows within SCDA Craiova was selected with common genes from the bull STARBUCK (Canada) brought by their grandchildren 51801 and 52150 via BESNE BUCK (France), 52506 and 52507 via SABBIONA BOOKIE USA) and the great grandchild 52569 via FATAL (USA); Genetic assays for production are based on 305 days of lactation production in the Maturity Equivalent (ME) of each cow. The dairy cows within SCDA Simnic are subject to official control of milk production. Thi...

This paper presents a study on deployment of policy based quality of service management at the mobile network edge. The requirements of fifth generation (5G) services for high bandwidth, low latency, reliability and availability can be fulfilled by Multi-access Edge Computing (MEC) former Mobile Edge Computing, which distributes cloud capabilities in the Radio Access Network. The paper studies the MEC potential for monitoring of accumulated usage of network resources based on data traffic volume on per session or ...

The analysis of reproductive performance in selected cows within SCDA Simnic Craiova, the obtention of the first generation and the exploration of the biological characteristics of the obtained youth, took into account the following breeding indices: calving interval (CI), determined as days between two consecutive parturitions; (SP) service period, determined as days from parturition to conception; number of inseminations per conception (NIC); Conception rate (RCv) determined as a percentage of fertilized insemin...

The paper is part of an important Scientific Research Project, VALINTEGR 2018-2020, in which some food supplements from the Cannabis Sativa and Helianthus tuberosus residues will develop. This study highlights the influence of some processing processes on the activity of some oxidoreductases from Canabis Sativa. The hemp seeds contain the daily needs of essential fatty acids: omega 6 and omega 3, which keep the clean of blood vessels and prevent cardiovascular disease. Also, hemp seeds contain 40% fat, 30% protein...

Vertical gardens are a new method for setting up inside or outside private or public buildings, providing a great aesthetic impact due to the impressive structure and the way it harmoniously combines architecture with nature, providing a balance between the two and, at the same time, modern. The purpose of this project is to embellish the facade of the BUASVMT building by introducing a novelty element that can offer a friendlier and more modern look to the edifice and a potential emblem of the university as plants...

Construction and subsequent operation of port complexes leads to increased anthropogenic load on coastal and marine areas. An effective compensatory measure for load reduction is the organization in the neighboring parts of the shores of protected nature areas. We present the study results of the impact of nature protected areas to stabilize the ecological situation in the anthropogenic transformed coastal zone on the example for the port of Bronka, commissioned in 2015. The objects of study are the territory of t...

In the study, heavy metal concentrations were determined from the Certej creek, basin in surface waters by using inductively coupled plasma emission spectrometry as an analytical method (ICP-OES). In order to assess the toxicity effects, the toxicity of various elements such as ( As, Cd, Cr, Cu, Pb, Ni, Zn etc.) were studied, these elements having an increased toxicity even at low concentrations. The purpose of this work is to determine their concentrations by the inductively coupled plasma emission spectrometry m...

The main objective of the research is to determine the problems of the temporary (non-final) cadastral maps (such as: some delimiting maps, details technical survey plans, and pen drawing maps), the influence of such unfinished plans on cadastral land parcels, and propose appropriate solutions to move to the final status. The study was conducted in the directorate of cadastral interests in the governorate of Tartous ? Syria, and how to implement the cadastral works[6]. It was found that the cadastral works in many...

Carrying capacity of heavy vehicles used for timber transportation tends to increase in the modern world. This tendency brings to an accelerated damage of the roads. The fleet of trucks used for timber transportation has become quite diverse. Modern vehicles differ from standard trucks in a number of characteristics, for example, weight. New vehicle features affect the strain-stress state of the road structure. This influence is taken into account in the process of calculation of total load equivalency factor. Loa...

In recent years, oppression and even death of Baikal sponges has been noted. To monitor the state of the sponges and find out the reasons for their death, as well as to optimize the cultivation conditions and develop natural remediation measures, it is extremely important to have adequate biotesting methods based on changes in the physiological reaction of the sponges under the influence of adverse factors, including under the influence of various classes of pollutants. In view of the extremely low growth rate, va...

This article discusses the modern condition of the archaeological monuments of the Predvolzhye of the Republic of Tatarstan. Fortified settlements as a manmade part of the cultural landscape, with the system of defensive fortifications, were selected as the objects of study, as they are easily identified by remote sensing data. In our view, the analysis of medieval Volga Bulgars (X-XIII centuries A.D.), the most common in the territory of the Republic of Tatarstan, has the highest priority. The main research metho...

3D modelling of the geology formations of the earth is an essential step towards understanding of complex geological phenomena and must be based on the whole of knowledge and available data for the study area (digital terrain models, geological and geophysical maps, sections, drill-holes and geological interpretation). 3D GeoModeller software made by Intrepid Geophysics Co. was designed to assemble together into the same 3D space data from various sources, in order to ensure geometrical coherence. For interpolatio...

It is known that the solar-moon tides (SMT) influence often serves as a trigger releasing seismic energy in a prepared area of the earth's crust. The regular increase in the number of earthquakes during the syzygy and perigee was empirically determined at the end of the 19th century by A. Perret [1]. The tidal force reaches its highest value when the perigee coincides with syzygy, which occurs once a year. The such pattern is observed for rock bursts (RB) also. However, it should be noted that the most tide influe...

Industrially defatted non-dehulled sunflower meal (SFM) with a protein content 22%, fibre 38% and cellulose 23% was separated into several fractions: protein fraction and lignocellulosic fraction, then they can be used for bioconversion into value added products. The protein concentrate (PC) contained 83% of protein. Hydrolysis of this concentrate by the commercial proteases, such as Proteinase T, Protex 7L, Protex 40E (Danisco Genecor, Denmark) and Pancreatin (Biosynthesis, the Russian Federation) can transform t...

It was studied susceptibility of starch granules of different types to hydrolysis by enzymes both in the gelatinized and native state. Starch was evaluated by chemical composition, morphology, physical and chemical properties and compared with respect to the action of amylolytic enzymes traditionally used to produce sugary starch products (alpha-amylase, glucoamylase). Enzymatic susceptibility of the samples was evaluated by accumulation of reducing matters during the hydrolysis of 1% starch suspension in gelatini...

The paper deals with the effective management of rainwater. Given the current climate change, which is currently faster than anticipated, environmental issues are very timely. These sudden changes are mainly caused by human activity. The most noticeable climate change is the increase in temperature and changes in the rainfall regime. These two changes are closely linked. The average consumption of drinking water per capita is over 100 liters of water per day in civilized advanced nations. But about 50% of this con...

Between 1990 and 2015, the annual global amount of CO 2 emission generated by transport has increased by 68%, from around 4.6 GtCOGtCO2 to aroaround 7.7 GtCOGtCO2. Technological advances towards eco -friendly vehicles and policy incentives promoting environmentalenvironmental-friendly modes of transport have thus been offset by economic growth and increasing mobility. This study questions the relationship between ec onomic growth and sustainability performance of transport sector. It adds to the literature new ins...

Lighting Engineering Laboratory ? LEL - is the main lighting independent consultant around Transylvania (the north-west side of Romania). Over the past few years the Lighting Engineering Laboratory developed and implemented different trial energy efficient lighting solutions for the university buildings. The Building Services Faculty was used as a lighting test area. The starting point was in 2013 - the lighting refurbishment success of the greatest lecture hall by replacing the old 4*18 W fluorescent luminaires b...

The civil engineers have a responsibility to society to offer best possible solutions in order to design more sustainable buildings. A way to incorporate sustainability concepts by the structural engineers is the attempt to reduce both material consumption requirements and energy use during all phases of design. In a sustainability focused society, the amount of the matter resulted from a structural design according to the norms, may be of key importance. Nowadays, structural engineers are trained to design for me...

The Niedzwiedzia Cave is one of the longest and deepest caves in Poland. The object is protected by the Nature 2000 Program, its natural value was the reason for creating there the area of Nature Reserve as well. Part of the cave has been available for tourists from 1983. In 2010 the entrance into the new route of the Cave was discovered, the length of which was over 1000 m. In the new discovered cave spaces many different, unique dripstones: stalagmites, stalactites, cascades, draperies and domes are present. Bec...

There has been a sweeping increase in a number of universities in the Russian Federation that are moving to implement courses and programs through English medium instructions (EMI). In other words, English is being used to deliver and teach content in the sciences, math, history, business, and engineering both in public and private education at all stages ? primary, secondary, and tertiary one. With the aim to promote international exchange, raise the quality and prestige of educational establishments, and provide...

The paper focuses on a validation approach of numerical modeling applications used in the study of wave and current propagation within adjacent areas of maritime/coastal ports, using satellite remote sensing data against in-situ data and model results? data. An advantage of using a forecast numerical model is its ability to allow an analysis within a relatively short time, but approaching numerically in a simple manner the different coastal hydrodynamic processes, without an appropriate validation it can give erro...

The influence of material resource flows in geosystems on formation of consumer value and the cost of high-tech products has been studied. For example, the flow of energy resources obtained indicators of impact of reducing their cost on the prices of high-tech goods. The occurrence of a cumulative effect in high-tech industries with multistage processing of resources is shown. Cumulation of reduced costs is formed. As a result, synergy of economic efficiency arises in geosystems. A mathematical model of the synerg...

Biochar samples were obtained by hydro-pyrolysis (600-800oC) of spent algae material, remaining after extraction of the liquid substances from algae for biodiesel production. The pore structure of the obtained carbon was studied by nitrogen adsorption at -196oC. The most prospective algae biochar sample obtained is distinguished by moderate surface area of 490 m2/g, as well as considerable microporosity (0.15 cm3/g) and mesoporosity (0.13 cm3/g). Pore size distribution show that the pores with size 1-3 nm prevail....

The goal of this work is to study the processes of producing carbon aerogels, silica-carbon aerogels and CNT-silica aerogels and search for new areas of their applications. To achieve this goal, aerogels using the sol-gel method and the supercritical drying process were synthesized. The analysis of the obtained aerogels was carried out using the methods of nitrogen porosimetry and scanning electron microscopy. In addition, a software that uses cellular automaton models to generate virtual structures of the studied...

Thermodynamic physical chemistry methods and databases allowing to model and calculate phase-chemical equilibria and transformations of advanced materials with taking into account dispersion have been developed. These methods and corresponding cods are unlimited with regard to number of species, components, phases, and composition of research systems. Efficiency of the methods proposed is proved by good agreement with practically observed industrial processes along with properties of numerous synthetic and natural...

Lake Onego is the second largest lake in Europe and it is situated in the Northwest of Russia. Benthal deposits of lake Onego are known to contain a large number of iron ore, and that affects the bacterial communities present in the lake. Some bacteria have a defense mechanism against the toxicity of metal ions which involves formation of metal nanoparticles. Bacterial synthesis of metal nanoparticles has a wide range of applications in industry due to its low cost, non-toxicity and eco-friendliness. Due to their ...

It was found that the mechanically activated highly dispersed component based on saponite-containing waste of the diamond industry allows us to improve the physicomechanical characteristics of fine-grained concrete due to the formation of hydrosilicates of additional generation. According to the working hypothesis, the resulting new formations are submicrocrystals of the tobermorite group. The objective of this study was to identify the products of the hydration of clinker minerals with a component on the basis of...

In this paper, we present an area, from the NV of the Transylvanian Basin, which has a particular geological structure. The complex geological aspects begin to be clarified once the Geological Maps 1: 50,000 were made. There is a marginal area in the North-East part, which is a monocline which sinks to the South and South-East. This marginal area is delimited by the sloping area through an important fracture, in the direction of Valley Calda - Gadalin - Gherla. Southwest of this fracture is the area with salt. The...

Marble onyx is a banded aggregate consisting of calcite and aragonite of the most diverse colors. Due to its decorative properties, onyx is valued in the jewelry and construction industry. In nature, marble onyx is formed by layer-by-layer deposition of carbonate substance from carbon-calcium dioxide water. It occurs mainly in the areas of young volcanism, rich in thermal springs. In recent years, information has appeared platform manifestations of onyx mineralization. One of these manifestations was found on the ...

The aim of the paper is to develop communication skills on professional topics to students studying oil and gas activity. We argue that it is effective to organize the teaching by means of using professional context, developing lexical skills. In order to design a professional context we suggest role-play activities related to oil and gas theme for students; development of lexical skills is possible in both language exercises and communicative ones. Methods of research presuppose theoretical analysis of relevant l...

Nutrition is the most important environmental factor that influences the body (Pavlov). About food is said to be a "necessity that gives birth to all the others" or "the pleasure of all ages, of all conditions, of all countries and all the days, which can be associated with all the pleasures and we remain at the last to console ourselves from the loss of others " It also confirms that: "you do not live from what you eat, but from what you digest." By the name of fresh meat products, we mean the meat products made ...

In Poland, for several years the needs and possibilities of introducing a multi-dimensional cadastre have been considered. The European Union provides the Member States with a legal framework in the form of a norm regulating the development of broadly understood land administration systems. The cadastre, as a source of information about land and people who manage it, must above all enable proper land management. The basic aspect that we encounter in the discussion about the cadastre is the determination of the spa...