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Frequent alternations of high and low temperatures and of rainy and dry weather, which were increasingly felt in recent decades have reduced harvests. Thus, the identification of varieties with genetic characteristics that provide a better adaptability presents a particular importance. Although a cultivar is known as the most important technological link in terms of production stability, the quantity and quality are influenced by the climatic conditions. Observations were conducted in the experimental fields of th...

One of the general problems of all lines of research is the exhibition of various micro- and macroscopic effects. Considering complexity and heterogeneity of oil composition oil systems can be put down for as complex systems. Research related to the in-depth studying of the various complexity level oil systems chemical composition are highly topical for establishing causes of complications, arising in various processes. For the last decades, stability studies are developing intensively. The emphasis is upon method...

The access to a safe drinking water represents a prerequisite of the modern days. Often, in the case of shallow aquifers, various human actions in the recharge area can induce unwanted changes in the quantity and quality of the underground waters. The main objective of this paper is to find out the groundwater vulnerable zones in shallow aquifers in the city of Jibou and its surrounding areas, which is situated in the north-west of Romania. The underground water supply source in Jibou city (11,000 inhabitants) is ...

The study was performed in order to establish the efficacy of the biological product ?Nemagold? in the control of root-knot nematodes (Meloidogyne spp.) on tomato crop under plastic tunnel conditions. Experiment was organized on tomato crop (cultivar ?Prekos F1?) strongly attached by root-knot nematode, located in south-east of Romania (Varasti-Giurgiu), during July-September 2016 period. Treatments were applied by drip irrigation during the second vegetation season. ?Nemagold? product having in composition extrac...

The noise in the workplace is a health problem of workers. It is estimated that a third of European workers are exposed to noisy working conditions more than a quarter of their working time. Hearing loss caused by noise is still one of the most common occupational disease in Europe, accounting for about one third of all occupational diseases. In order to identify employees and workplaces that are exposed to noise levels should to perform measurements of noise periodically. The methods for determining working condi...

The global level of urbanization is growing. Some estimates indicate that till 2030 the degree of urbanization will reach 83% in economically developed countries. In this context, large urban areas are already facing with problems due to water and air pollution, noise pollution, forming "heat islands?, energy consumption, overload of rainwater collection systems and human health degradation. In this paper are presented the benefits of green roofs and the contribution they play in solving problems in urban areas. I...

Geotechical engineering combines strict mechanical rules with a random nature of natural soils. That is why reliability-based approach to geotechnical design is still not fully appreciated by the engineers. Large variability of soil parameters and uncertainty of computational models emphasize the importance of experience and engineering intuition followed by over-standard number of testing procedures of both: the soil and the structure. Conventional university education may provide the student with the knowledge a...

The paper presents the original results regarding a computer program for production and reproduction data management in dairy cattle farms, with the statistics module necessary for the farmer?s current processing and the genetic improvement of the livestock. The statistics module processes the data entered by the farmer and provides statistical data for several parameters specific to cattle farms, such as: X , ±s x , s, V%, genetic parameters (heritability, correlations, repetability) and the genetic evaluation of...

Numerous space agencies and powers have announced their plans on lunar exploration for the next years. The main purposes are preparation and creation of long-term scientific, technological, experimental, and industrial bases on the near side of the Moon and in the areas of the lunar poles for conducting scientific experiments and investigating lunar bowels. The American space agency (NASA) has published the most detailed for today map of the lunar South Pole. The new data has been collected by the ?Lunar Reconnais...

In the placers of the south-eastern boundary of the Lyapin megaanticlinorium at the Subpolar Urals for the first time the relation of native gold with bismuth and telluride minerals was reliably established. The placer area is located within the Lower Proterozoic and Riphean metamorphic rocks. Directly in the placers Bi-tellurosulphides, tellurides and sulphosalts (tetradimite, joseite-B, joseite-A, tsumoite, hedleyite, cosalite), native bismuth, native silver, maldonite are determined together with gold in large ...

Mining technical reclamation as the main technological process for the development of ore deposits with the open method, as well as the cost optimization of reclamation, taking into account possible technical solutions have been considered in the paper. The investigation proves that the time gap between the soil disturbance and reclamation should be minimal, that is, reclamation must be carried out not at the final stage of mining, but in the process of mineral mining. The reclamation time is directly related to t...

Vehicular traffic in major cities is the prevailing means of personal transport today. Nonetheless urban public transport has become more important. Its main advantage is the number of simultaneously transported people. This not only reduces the amount of greenhouse gases emitted, but also puts fewer passenger cars on the roads. The use of public transport is thus ecological and improves the flow of traffic in major cities. Metropolises today utilize comprehensive urban transport systems which combine metro, trams...

Various metallurgical slags are generated in metal extraction, refining and alloying processes. Due to the large slag quantities and the strict erenvironmental regulations, recycling and utilization of these slags are an attractive alternative in order to reduce and eventually to eliminate the disposal cost, to minimize the related environmental pollution, and to save the resource conservation.The global warming effect and natural resource saving are the general environmental topics nowadays. In addition, the land...

Underground coal gasification (UCG) is an industrial process that provides an alternative to conventional underground mining at coal seams that are located especially deep underground. This process converts coal into product gas (syngas). In this contribution, a proposal of the monitoring system of the underground coal gasification process is presented. The task of the monitoring system is shown indirect measured values from UCG process as two-dimensional temperature field of gasified coal seam. The two-dimensiona...

The study solves actual modern problem for obtaining polysilicate solution (as a mineral component of clinkerless binder) based on low-quality siliceous raw materials. A mechanochemical synthesis method of sustainable colloidal silica sol (with a particle size of 5-25 nm) is proposed, as well as a grounded choice of grinding parameters is made. Influence of protolytic properties of liquid phase on dispersion speed, aggregate and sedimentation stability of the silica sol are studied. The obtained dependence of the ...

A considerable progress in industrial construction and civil engineering makes it necessary to increase the production and application of new heat-insulating materials based on accessible environmentally safe mineral products. The mineral composition and structural characteristics of Karelia?s natural raw materials are favourable for the production of ceramic heat-insulating materials with required properties and characteristics such as porous structure, low density, low thermal conductivity and high strength. The...

The problem of recreational use of forest areas in modern conditions has gained special relevance. This is due to the following reasons: increase in neuro-psychological stress, number of stressful situations and the desire of the people to remove these loads, i.e. to improve their psycho-physiological state in a forest; development of the road network and means of transport; a variety of landscapes and a wide range of recreational opportunities (recreation, collecting of mushrooms, berries, balneological effect of...

Natural zeolites and synthetic ones are porous materials characterized by the ability to lose and gain water reversibly, to adsorb molecules having a corresponding cross section diameter (adsorption properties or which act as a molecular sieve), as well as to exchange constitutive cation without a major change in their structure (proprietary ion exchange). The exploitation of these properties underlies the use of zeolites in a wide range of industrial and agricultural applications and in particular in animal nutri...

There are many technologies in road construction to ensure the better parameters of materials, mainly strength and deformation parameters and in recent years are very interesting and necessary so called environmentally acceptable technologies. With the development in the field of asphalt pavements there are various types of organic or chemical additives applied. The main reason of this application is to reduce the temperature used for producing and especially for laying of asphalt mixture. Chemical additives are s...

Nowadays, the prices of the plots or the building sites grow and on the most they are defined as price per cubic meter. Although the fact, that the prices are growing extremely, areas in cadastre of real estates are not obligatory. The paper aims with the differences, which are resulting from the legislation and are focused on growing measurement precision necessity. The differences in the way of the break points measurement and better precision at all are applied on different plots. The paper is interested in rel...

The Danube Delta is declared the biggest natural reserve in Europe. Due to the fact that the Danube River is a main water collector in Europe, it flows all the impurities and pollutants that people discharge into the rivers which are the tributaries of Danube. The present study is a warning against water pollution in the Danube Delta, pollution that may affect biodiversity. Babadag Lake is part of Razim - Sinoe lagoon system, included in the Wetlands Protected Area under the Ramsar Convention, and together with th...

Last winter, with respect to the most recent ones, was marked by severe cold spells and uncommon accumulation and persistence of snow cover in the non-mountainous areas of the country in January. These weather events provoked an intense media interest and raised up the debate about global warming. Actually, what type was the winter season of 2016-2017 compared to the previous years ? normal, severe or extreme? In the presented climate assessment, a set of indicative climatic characteristics is explored on the basi...

Tons of pharmacologically active substances are used by human annually in medicine, agriculture, and for farm-animal production. The influence of pharmaceutical antibiotics (benzylpenicillin, pharmazin, and nystatin) in different doses (100, 300, 450, and 600 mg/kg) on a number of microorganisms of the chernozem region has been studied. All tested doses of pharmaceutical antibiotics had a significant inhibitory effect on the abundance of soil microorganisms. Bactericidal drugs (benzylpenicillin) are most effective...

During combustion of natural fuels together with oxides of main fuel elements (carbon and hydrogen) fly ash with unburnt fuel particles, sulfur oxides, nitrogen oxides, some amount of fluorine-containing compounds and gaseous products of incomplete combustion of fuel are released into the atmosphere. The technology and technological parameters of equipment for purification of exhaust gases of TPP, which allows to remove up to 95% of sulfur and carbon oxides by low-temperature liquid-phase catalytic oxidation at at...

In system of sustainable and safe development of regions one of the major tasks is scientific justification of a control system of health of the population at the expense of risk assessment to health of the population from negative impact of factors of the environment. One of the leading factors of anthropogenous impact on health is aerogenic. The paper studies public health risk assessment from the chemicals emitted city's largest enterprises. The analysis is performed on the basis of the qualitative and quantita...

The results of experimental research of hydration process of highly dispersed systems based on saponit-containing waste, extracted as the solid phase of the recycled water suspension kimberlite ore enrichment process of the diamond industry. Saponitcontaining sludge was dehydrated and subjected to mechanical activation on the planetary ball mill. Mechanical activation of raw material more than 60 minutes does not increase the specific surface area of samples was found. Specific surface area is achieves the maximum...

U(VI) biosorption by six natural materials: three types of peats, Polytrichium moss, Eichh?rnia cr?ssipes water plant and Cladonia stellaris lichen was investigated. Natural sorbents were selected, as it is available, cheap and accessible materials. The effects of initial concentration of UO2 2- in the model radioactive solution and pH on the sorption uranyl ions were assessed. Adsorption isotherms and constants for given adsorbates and adsorbents were determined. Equilibrium is well described by Freundlich equati...

Currently, the intensity of the development of the city and of surrounding to town of areas significantly increased. Under construction a new parcels of land, are used. Some of which have not above been used in mind the geological and hydrogeological features of such sites. These portions include the coastal zones of rivers and of reservoirs, which are prone to flooding or affected by landslide processes. In this link the problem of the developing of effective methods of the geodynamic monitoring of landslide proc...

Hydraulic fracturing is a widely used in the hydrocarbon production industry to stimulate oil and gas flow from traditional and shale formations. This technique is one of the essential elements of borehole mining technologies and is designed for controlled impact on the rock mass during the development of solid, liquid and gaseous mineral resources. The creation of a system of traversing cracks in the rock mass that are parallel to each other is of great practical interest for many geotechnical issues such as impr...

Corrosion is a process of spontaneous physicochemical destruction of metal, leading to irretrievable loss of metal, due to its chemical or electrochemical interaction with the environment. As a result of corrosion processes, the surface of the metal is visibly destroyed. However, the concept of corrosion includes not only visible surface fractures of the metal, but also cases of internal intergranular destructive influences, proceeding outwardly imperceptibly, but being one of the most dangerous types of destructi...

Year by year, the growth of the share of heavy oils in the total volume is steadily increasing. For development of highly effective methods for its processing, approaches to modelling their properties should be elaborated. This thesis is dedicated to deriving and substantiating a formula for calculation of the velocity field in the round pipe volume as adjusted for rheological features of the flow of heavy oil suspensions. The suggested approach is based upon rheodynamics equations reflecting the flow of a rheolog...

The purpose of the work was to identify the features of technical design of greening buildings integrated into the building The necessity of forming additional landscaping in the structure of residential development is substantiated by analyzing the modern character of residential areas (on the example of the city of Moscow). The typology of types of gardening is given, three main types are distinguished. Classified carrier base for landscaping. The environmental principles of the formation of structures for garde...

Background: Influenza A viruses continue to be the main cause of major epidemics, accompanied by high mortality. The vaccinal prevention for a number of reasons, such as the unpredictability of the molecular genetic and immunological characteristics of new epidemic and pandemic strains of influenza A virus, is not able to provide full protection of the population against viral infections. In addition due to the increasing resistance among influenza A viruses, the effectiveness of existing commercial antiviral drug...

The recent demands regarding energy efficiency of buildings across the European Union, namely the nZEB concept, impose among other improvements, the thermal behavior optimization of building components that define the building envelope. In order to achieve the imposed nZEB criteria, conventional thermal insulations with increased thickness have to be used, which is inconvenient in several cases. The paper presents an alternative solution, given by Nano insulation materials, such as aerogel and vacuum insulation pa...

The marine environment is considered to be a highly aggressive environment for metallic materials used in the construction of the various elements of the structures. The aggressiveness of the marine environment is given by a number of chemical, physical and mechanical factors. They make maintenance of structures to be very difficult and very high costs are allocated. The phenomena of degradation by corrosion at level onshore and offshore are favored and accelerated by a number of factors related to long periods of...

The activities of mining and chemical enterprises in Ukraine have reserved a number of environmental issues that affects all elements of the environment and requires immediate solution. Nowadays, in Ukraine, there are still relevant soil subsidence in areas of mining and chemical enterprises, the accumulation of large-tonnage industrial wastes, accumulation and migration of heavy metals in soils. Equally, important is the issue of water pollution in the area of mining and chemical enterprises. The purpose of this ...

Saline intrusion related to drought and sea level rise may result in changing of engineering properties of cohesive soils. To comprehend the variation of geotechnical properties of soils intruded by saline water, consolidation is one of the important aspects should be investigated. Undisturbed soil samples that originated from sediment in the Red River delta, Vietnam, were chosen. In the conditions that soils had been fully saturated by solution of four salt concentrations, 0.0, 9.9, 19.8 and 33?, the variation of...

Near trunk road plantations in several regions of Russia's widespread coniferous trees, particularly pine (Pinus sylvestris L) and spruce (Picea pungens Engelm). Currently there is a trend of increasing plantations of pine (Pinus sylvestris L) near trunk road, this is due to the ecological and biological characteristics of pine (Pinus sylvestris L), particularly low demands on soil fertility, heat and cold resistance, good survival of seedlings. The creation of plantations of spruce (Picea pungens Engelm) in the a...

This study investigates the weed vegetation in vineyards of Rahovec region in Kosovo. Along with far-reaching political and socio-economic alterations, agricultural land use has changed in the recent past in the Kosovo. To increase the knowledge on the weed vegetation in vineyards, we recorded the vegetation of 100 plots with a standard plot size of 25 m?. To avoid edge effects, the minimum distance of each plot to the field border was 10 m. The location of each plot was documented with the help of a GPS using the...

The technology of cutting with a plasma arc is today a very advanced solution for thermally cuttable conductive materials. Plasma or also the plasma arc is composed of positively and negatively charged particles, excited and neutral atoms and molecules. As it contains free particles, it is electrically conductive and thus subject to the effects of an electric and magnetic field. This article discusses the use of plasma cutting technology on a CNC machine. The resulting quality of the plasma cutting is determined b...

The effect of ambient conditions on the properties of three different types of concrete containing ground granulated blast furnace slag, silica fume, and waste brick powder as partial Portland cement replacement is studied. The samples are exposed to the external environment in a test facility located in the city of Prague. The upper horizontal surfaces of the specimens are covered so that the wind, rain, snow and sun radiation affect only the vertical surfaces, similarly as in their practical application on build...

The reliability of forecasted long-term peat settlement under embankment is primarily determined not by the soil models used, but by the specific features of peat laboratory testing. This article presents the results of oedometer tests of various-height peat samples with squeezing of pore water towards only top or top and bottom faces. The load was applied to the samples in two ways: by gradual stepwise increase or all at once. The stabilization condition for each load was sample deformation not exceeding 0.01 mm ...

Experience shows that last year marked by economic sector tourism is the fastest growing because it provides more than 6% of global and 13% of consumer spending. The tourism industry relies on tourism's role in economic, psychological, social created. For many regions, countries, tourism is seen as a panacea for economic recovery and raising incomes of local communities, firms. In this context, an imbalance between profit / responsibility / environmental sensitivity, which can lead to an offensive of governments a...

Raising abstraction level of designing of custom digital circuits is a major scientific and practical problem that attracts a lot of academic and industrial efforts nowadays. However, existing approaches to handling of this problem typically do not provide sufficient means of defining individual domain- and project-specific custom-level microarchitectural decisions being directed by custom user specification that coordinates their application via specialized controls embedded in this specification. In the article,...

The experience accumulated in Romania and worldwide by means of studies, design and control of the behaviour of many shallow foundations has rendered evident the existence of some soils, such as the loessial soils and the plastic clay fills, which are characterized by a high deformability, due to their sensitivity at wetting. One of the defining feature of these soils is their ?contractancy? under the simultaneous action of compression and shear stresses. The macroporous soils, such as the loessial soils, have a c...

This paper describes the optimized algorithm for searching Hamiltonian path in graph. Formerly a similar algorithm was developed for the finding of the optimized path in terrain for finding of the precise positioning of Global Navigation Satellite Systems (GNSS) via Real Time Kinematics (RTK) method. The aim of this method is to achieve quality GNSS observation on all the points in question, so that the total length of the path within all these points can be minimized. There are nodes of two types in the graph: 1)...

Over the last decades, deep drilling technology expanded fast. Newly created progressive technologies improved quality of drilling work and speeded-up the drilling process. Currently, 75-80 % drilling methods used world-wide are traditional, while 20- 25 % are new techniques. Slovakia is a little behind this trend: our utilization ration shows 95-98 % traditional drilling methods, compared to only 2-5 % new ones. Together with development of new deep-well boring technologies, new types of drilling sets for deep dr...

Pruning is one of the most important agro-technical measures during cultivation of grapes that affects directly in increasing the quantity and quality of grapes and wine. There are no templates to be applied to all lifting systems - forms of crowns, because each variety has different pruning methods.The number of buds left during pruning depends on many factors such as variety, fertile buds, power - vegetative state of the trunk, agrotechnic and cultivation system ? form of the trunk.The number of buds has decisiv...

The aim of this paper was to investigate the effect of defatted rapeseed flour addition from which proteins were extracted (DRF) on quality characteristics of bread as a finished product by baking test, rheological and microstructural examination. The dough rheological properties were determined by using the Alveograph device and its microstructure was analyzed by using the epifluorescence light microscopy (EFLM). Also, there were conducted analyses on the bread quality prepared from composite flour (wheat flour 6...

The development of modern technologies allows us to solve the problem of carrying out long-term measurements of velocity and temperature in lakes. The long-term local measurements of velocity have been conducted in Lake Shira (Khakassia) in the period 2014-2015.The velocity profile along the column of the liquid in Lake Shira occurs due to density summer stratification and wind. The horizontal velocities vary greatly in depth as well as in time. The principal component method has been performed to analyze the hori...