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The objective of the paper was to emphasize the influence of the biological activity on the structural improvement of the compacted clayey pedogenetic horizons of two Chromic Luvisols, by the organic matter bioturbation. The researches were performed on two Chromic Luvisols from Romanian Plain, where the mean annual temperature is 10.5oC and the mean annual precipitation is 548 mm. The analytical data showed that clay content increased from the top layer of both soil profiles (28.9% in P1, and 29.8% in P2), to Bt ...

The coal gasification process is currently developed as one of clean coal technologies. Gasification is a high-temperature process (above 800 пїЅC) in which the coal reacts with a gasifying agent, e.g. air, oxygen, or water vapor. As a result, under conditions of elevated temperature and pressure, chemical bonds in the molecular structure of coal break up and the mixture of water vapor, oxygen, carbon monoxide, and hydrogen, commonly known as syngas, is produced. The chemical composition of the obtained syngas is ...

B?r?gan Plain, located in south-eastern part of Romania, is bounded in the south and east by the Danube meadow, in the North, by the Siret river lower meadow, in the west, is bounded, on the north to the south, by the Buz?u river meadow, S?rata valley, ObпїЅr?ia Mosti?tei, Pas?rea valley, DпїЅmbovi?a river, and finally the Arge? river meadow, this limit (particularly those starting from the south of C?lm??ui river) overlaps the interference between the forest-steppe and the restricted forest formations. From a cli...

The objective of the study was to increase the solubility of amiodarone hydrochloride by complexation with hydroxypropyl-пїЅ-cyclodextrin. After complexation a cyclodextrin/amiodarone inclusion complex was formed. The use of media containing surfactants is a suitable solubilizing method and as a result, a non-ionic surfactant - Tween 80 and an anionic one - sodium lauryl sulfate have been used. The dissolution profile of amiodarone hydrochloride and that of the inclusion complex, regarding the release of the activ...

Digestate is a liquid residue from anaerobic digestion in biogas plant. Digestate contains a high proportion of mineral nitrogen and other macroelements and microelements necessary to plant growth. Recycling of nutrients contained in digestate back to the soil is considered as the most suitable utilization of digestate. The digestate used in experiment was taken from agriculture biogas plant which uses pig manure and corn silage as input raw materials. This paper presents the results of laboratory pot experiment i...

This work has pursued the accumulation process of aromatic compounds such as esters in three varieties of Romanian native wines from Apoldu de Jos, namely Feteasc? regal?, Feteasc? alb? and Iordana, obtained by fermenting them in a microvinification system, in a bioreactor equipped with temperature sensors for pH and CO2. The pectolytic enzymes Enozym flavors (3g/100 kg) and selected Vinartis ferm yeasts as Saccharomyces cerevisiae strain were used for the alcoholic fermentation. To identify and quantify the ester...

This paper focuses on the influence of the fiber glass functionalization agent on the properties of the polymer composites. Thermoplastic polymers are novelty materials, with special properties, depending on the type of elastomer, the degree and type of functionalization agent of the reinforcing material etc. Thus new impact and flame resistant advanced materials were developed and characterized. The polymers chosen for this study were polyamide (PA), a thermoplastic polymer that has high temperature resistance an...

This paper aims to highlight the production characters of two cultivars of watermelon planted in grafted and in non-grafted culture, starting from the premise that vegetable grafting represents the most common biotechnology for European and Asian countries, where crop rotation is no longer an option and available land is under intense use. The researches were conducted in 2016 at Research - Development Center For Field Crops On Sandy Soils D?buleni пїЅ Romania, under field conditions, on two cultivars of watermelo...

Global warming and climate change are two of the main problems facing the mankind. 70% of cities are dealing with the effects of this phenomenon and nearly all of them are at risk. The larger cities create over 70% of global CO2 emissions and consume 2/3 of the worldпїЅs energy, so the focusing on the solution on global warming is heavily depending on future act in major cities. Urban density presents a greener way to live. Because the concrete surface is expanded not only on horizontal but even on vertical, in th...

The Dolj District is located on Oltenia Plain in the southern part of Getic Plateau. The studied territory which is the northern part of Dolj District is located on the central zone of Oltenia on the high plateau Leu-Rotunda. This area is characterized by varied natural conditions and so is the formation phenomenon of soil. As a result of soil formation factors, within the northern part of Dolj District there were formed soils that have as specific horizon the clayey one, the most encountered being preluvisoils. T...

Two identical hollow fibre membranes used for ultrafiltration as prefiltration stage of water drinking treatment were tested for assessing the efficiency of cleaning, by using hydrodynamic cavitation. Each membrane with outside-in permeate flow direction, and the same molecular weight cut-off (0.097 m) was placed vertically inside glass cylinders. One hollow fiber membrane was subjected tohydrodynamic cavitation and cavitation during backlfushing. For the other membrane no treatment was provided for comparison rea...

The physical properties of salt make excellent conditions to overcome chemical and physical nature of hydrogen. Hence, hydrogen storage in salt caverns is one of the industrial methods except for depleted oil/ gas fields. The hydrogen has the smallest atomic radius in whole periodic table. It can attract the electrons of other atoms very easily which makes it reactive. A good sealing of pipes is a very important issue in underground hydrogen storage in salt domes. The cementing slurry should be pumpable and compat...

The most important problems with a negative impact for Romanian coast, the erosion phenomen, are given by the numerous conflicts between the development of various economic activities and it is necessary to implement a system for preventing the further deterioration of shoreline. Coastal protection systems can be represented by linear structures perpendicular to the shore, called groynes. The groynes trapping sand on the upstream side and in this way, protect the coast behind the sand filet. The protection depends...

The Volga-Ural oil and gas province is one of the oldest oil-producing regions in Russia. The central position in its borders is occupied by Tatarstan, in the territory of which is explored the largest oil deposits of the region. Oil deposits belong to the Devonian sediments, and in a lesser degree to the Carboniferous and Permian deposits. Despite the high degree of research of the region, the origin of oil deposits still one of the most controversial issues. Most researchers consider that the source of oil is th...

Transmission devices damages such as power lines, transmission pipelines, oil and gas transmission pipelines can be divided into those associated with their construction and the ones which result from their location on the property. Among the second group landscape damages are increasingly often mentioned. What is more, the methodological valuation of such damages is extremely difficult. That difficulty stems from the lack of legal and methodological regulations regarding the aforementioned issue. The valuation st...

According to the requirements of Council Directive 98/83/EC of 3 November 1998 on the quality of water intended for human consumption and Regulation of the Minister of Health of 13 November 2015 on the quality of water intended for human consumption, drinking water should be characterized by the appropriate concentration of selected parameters, i.e. heavy metals. The specified parametric values should not be exceeded not only in water treatment plant, but also on the particular parts of the production cycle and wa...

Mastitis affects not only the health of milk-producing animals, having a direct consequence on the farm profitability, but it also affects the animalsпїЅ well-being. After performing the microbiologic examination of the milk samples coming from cows diagnosed with sub-clinical mastitis, were isolated 9 different species, out of which 7 species of bacteria and 2 species of fungi. The predominant species were those of staphylococci, Staphylococcus intermedius being isolated in 45,45% of the samples. The second speci...

The studies on the effects of winter wheat cultivation technology and spring barley varying degrees of intensity on productivity, carried out in All-Russian Scientific Research Institute of Agriculture and Soil Protection, allowed a detailed analysis of the positive and negative aspects of these technologies usage, and also they let us define that when the intensification indicators increase the productivity of studied crops increases as well, together with simultaneously reducing of productivity varying on years....

This work presents the results of the study of the different content (0-7 wt.% in increment of 1 wt%) effect of bentonite microparticles on the mechanical and barrier properties of gelatin/potato starch/glycerol (90/10/30 wt.%) edible biocomposite films. The biocomposite films are prepared by casting method from film-forming water solution and characterized by thickness, moisture content, transparency, mechanical test at puncturing, water barrier properties and water solubility. Increasing the concentration of ben...

Metal Oxide Varistors are today used for manufacturing state of the art overvoltage protection equipment, at any voltage level, being one of the most common power electronic devices existing on the market. They are widely used because they have a very high non-linear dependence between the applied voltage and the resulting current, and a relatively high energy absorption capability in case of normal overvoltage shocks or even in case of permanent overvoltages. Researches could be carried out both for finding a new...

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 пїЅ form of the trunk.The number of buds has decis...

Membrane processes used in wastewater treatment are categorized as the best techniques available at this time because it has advantages in terms of quality and costs. The membranes have different properties depending on the obtaining parameters. Their properties can be influenced throughout the membrane fabrication steps: when the polymer solution is prepared, when the polymer solution is applied in form of a thin film and also even after the thin film membrane is removed from the coagulation bath. Some important ...

This study of an alloyed steel with Cr, Mo which has an important content of aluminum (0.9,пїЅ1.2)%, unconventional treated in magnetic field, is attractive because of the increasing of the durability and the wear resistance along with the improvement of the corrosion resistance. Thermo-magnetic treatments applied before the thermo-chemical treatment has consequences such as the improvement of the mechanical properties of this material. The micro-hardness of the superficial layers has been increased after the unco...

Thermal pollution is considered to be one of the physical water pollution types that is caused by dumping of water heated by the units of industrial, thermoelectric and nuclear power stations. This type of pollution is characterised by the increase of water temperature higher than the natural level. At the places where heated water is dumped there are zones with water temperature higher than in the whole reservoir: about + 12пїЅ ? in winter and + 30пїЅ ? in summer. This fact results into the increased amount of or...

Metal Oxide Varistors are today used for manufacturing state of the art overvoltage protection equipment, at any voltage level, being one of the most common power electronic devices existing on the market. They are widely used because they have a very high non-linear dependence between the applied voltage and the resulting current, and a relatively high energy absorption capability in case of normal overvoltage shocks or even in case of permanent overvoltages. Researches could be carried out both for finding a new...

The main purpose of this work was to determine the influence of type of sampling container on a chemical composition changes of geothermal water. Current research conducted on a bottled waters indicated that, from the vessel walls to water stored in a bottle are transferred various pollutants, mainly the elements such as: arsenic, chromium and antimony [1-3]. Waters with a natural high temperature can intensify mentioned process. The experiment was conducted on the samples of geothermal water collected from the PG...

This article presents results of the studies conducted by authors for determining the influence of ultrasounds, used in the intercritical quenching, on the structure of some low carbon and manganese dual-phase steels (0.087% C and 0.511% Mn, respectively 0.101% C and 0.529% Mn). The samples of these steels were heated to temperatures between 760 and 820 ?C (temperatures between the critical points Ac1 and Ac3), for 30 minutes and then quenched in water, water in ultrasonic field with frequency of 40 kHz and water ...

Fruits and flower edible petals rich in polyphenolic compounds, in particular anthocyanins are known for their pharmacological properties. In order to recover high amounts of such biomolecules from their matrix, various extraction conditions should be conducted. In the present paper, flower petals of Hibiscus sabdariffa and fruits of Ribes nigrum were irradiated with UV-C light for different times (10 and 20 minutes) and at different distances (20, 30, 40, 50 and 60 cm) with the objective to study its effect on pl...

Extra-heavy oil is considered as one of alternative energy sources mainly because of reserve potentials, rich in organic compounds and rare transition metals like V and Ni. Extraction from this hydrocarbon resource has always been a challenge due to high oil viscosity and as a result low mobility within porous media. Conventionally the production from extra-heavy oil reservoirs is achieved by thermal methods such as SAGD, CSS, Insitu combustion, etc. However, these techniques do not consider the post productionsпї...

The aim of the article is an example of how to handle the process and visualize data from the sensor SRS in a GIS environment. Spectral Reflactance Sensor (SRS) is a contactless position sensor system manufactured and distributed by Decagon that monitors vegetation cover, and depending on the use of sensors allows for the Normalized Difference Vegetation Index (NDVI) or Photochemical Reflectance Index (PRI). Values of the spectral reflectance are gradually transferred from the field sensor to the PC environment, a...

Dynamic of the degradation processes is a complex issue in the light of the factors that converge to this, which can be direct, of natural origin, as a consequence of climate change or global or local climatic anomalies and are relatively easy to identify, as regards the characteristics of topography, vegetation coverage, soil etc. to which are added indirect factors, predominantly anthropogenic, that acts like a catalyst stimulating the degradation of soil resources and its attributes that sustain life. B?r?gan P...

The problems of environmental protection and ensuring of the necessary level of environmental safety are relevant in a globalized world. In this regard, an achievement of balance between ecology and economy, the formation of "green" economy are a global trend. Sustainable business development, increase its competitiveness and value company growth, in turn, are inextricably linked with the intensity of the environmental activities of the enterprise. The article is devoted to the under-investigated problem the creat...

Chromium is widely used in the form of metal and in the form of compounds. The compounds of Cr(VI) are highly toxic. Therefore, the wastewater containing chromium must be thoroughly cleaned by sorption, extraction, electrochemical and biochemicals methods. Methods based on the reduction of Cr(VI) occupy an important place. A large number of reducing agents, including FeSO4, has been proposed for this. Studies carried out earlier showed that during this reaction a magnetoactive compound is formed. Lignosulfonic aci...

In historical city centers cobbled roadways are currently being used in the reconstructions of roads. Cobbled roadways are being built also in new construction for example parking lots, sidewalks and bike paths. Cobbled aprons are often built around a central island on roundabouts. Elevated transverse thresholds or pillows made of cobblestones are popular as elements for traffic calming in residential urban areas. A prerequisite for perfect function of these cobbled surfaces is the adherence to the correct technol...

Currently in many countries developments of simple 3D building models in cadastre are usually based on information concerning building outlines from a digital cadastral maps and on the number and the average height of floors registered in cadastre (so called пїЅ пїЅ3D Model General FloorпїЅ). If it is possible architectural projections of buildings and premises are used for development of such 3D models. In this variant so called пїЅ3D Model By FloorsпїЅ пїЅ created model must be connected with the state coordinat...

The aim this paper is to demonstrate the disadvantages, causes by destroying defenses dams in the Danube meadow in the area Ostroveni пїЅ Corabia and to present the advantages of the ecosystems resettlement and natural baseline processes. In other words to demonstrate the need for renaturation, combined with modern methods of flood management risk, such as creating flood controlled enclosure. To achieve the goal of this paper have been created maps using ArcMap10.1 program. With their help it could conclude that t...

Innovation management has to support the principal strategic factors that can guarantee successful innovative strategies, therefore the role of organizational transformations has a central leading position and is interconnected with the corporationsпїЅ biotechnology. The impact of strategic innovation management is profoundly established in the revolutionary organization of global competitiveness, consequently corporations have to project incorporated biotechnological techniques that are flexible and adaptable to ...

In this paper the properties of level surface of potential of gravity arising in the generalized problem of two centers are investigated. Interest in this research is related to the desire to use the opportunity of an analytical approximation of the EarthпїЅs potential through the potential arising when solving the generalized problem of two centers (intermediate EarthпїЅs potential) to modeling the Earth's surface. Further, for a such approximation the level surface of potential of gravity arising in the generali...

Existing EU standards for environmental protection are strictest in the world. Environmental policy helps to create a green economy, protect the environment, and take care of the health and quality of life of the people of the EU. The nature and content of environmental policy at the EU level was analyzed and the main requirements and trends in its development are specified. The analysis covered trends and potential areas for improvement of environmental policy and also the system of principles required to build t...

The paper deals with issue of computation of the sunrays penetration through point cloud data with considering the geometrical and astronomical principles in calculating the Sun position relative to points of the objects on the Earth surface. Input data are represented by point cloud obtained by the method of terrestrial laser scanning and they express group of trees in the forest stand, where solar insolation is one of important parameters being studied in forest protection management systems. Currently used meth...

The correlation between the spatial variability of basic soil chemical properties (soil pH-value, content of available phosphorus and potassium) and winter wheat yield was studied. The mentioned parameters were observed on the one 11-hectare field located in north-eastern part of Slovak Republic. The field was divided on the grid 50x50 metres for soil sampling. Totally were sampled 37 soil samples. The soil samples were analysed for pH value and contents of available phosphorus and potassium. Next the basic statis...

The sediments of the of the Middle Franconian stage of the Upper Devonian along the cut contain the maximum amount of dispersed organic matter. This rock complex is the main oil producing stratum for most oil and gas fields on the territory of the Volga-Ural basin. The Semiluks horizon is represented by three types of sections: typical of Dominic and transitional ones. In Sargaevian sedimentation occurred under conditions of a shallow, epicontinental, open sea with normal salinity of water. The parameters of kerog...

Determination of the threats arising from the vibrations generated by geotechnical works, like sheet pile or pile driving, often requires special monitoring of buildings located in the area of vibration. Monitoring allows distinguishing the vibrations affecting the structures from vibrations clearly perceptible by humans, but not strongly affecting the building. In some limited cases, dynamic analysis enables for designing an active generator, reducing dynamic impact of foundation works. The article presents the p...

Shut-off valve is an important element concerning operation of the main oil pipeline. It has a major role in technical process and elimination of emergency situations. There is a necessity to raise the level of work efficiency of shut-off valve with the purpose of increasing pipeline serviceability. As a rule, electrical drive is used for operation of shut-off valve in oil transportation. According to this we have an urgent problem of electrical drive breakage caused by electric power supply interruption. It is a ...

The paper concerns the pores systems characterization of the Miocene mudstone samples provided by mercury injection capillary pressure (MICP) method. This analysis is the progressive intrusion of mercury into a porous structure under stringently controlled pressure. Since mercury does not wet most substances and does not spontaneously penetrate pores by capillary action, it must be forced into the pores by the application of external pressure. The required equilibrated pressure is inversely proportional to the siz...

The aim of this article is to study astronomical refraction anomalies. Back in 1925 Grachev and Banahevich found systematic errors in meridian observations depending on zenithal distance. Grachev suggested that these refraction anomalies arise from the inclination of the Earth's surface to the South. The airstratas of the same density were considered as parallel to the Earth's surface. But the analysis of latitude observations from the Bamberg and ZTL-180 telescopes showed there were significant systematic errors ...

When building the foundations of a machine tool, demands must be placed on high quality and, above all, on their stability during their entire lifetime. In practice, however, it shows that these requirements are not always fully met on the customerпїЅs side when laying foundations. In the course of working, these foundations are subsequently damaged and their uneven decline occurs, which results in a change of the machine alignment, and thus it also influences the accuracy of production. For the supplier of the ma...

The specific energy consumption is mainly influenced by kinematics and dynamic measures of vertical transport installations as well as by the compatibility of different composing parts and their subcomponents. The optimisation of kinematics and dynamic parameters characterising a transport cycle is decisive considering the energy consumption. Also considering the operation of the vertical transport installations, as well as the character of the variation of kinematics and dynamic parameters during a race, it has b...

Specific models and storage technologies which is possible to save domain semantics are required to create configurable information systems. This is why modern researchers talk about the high cost of domain models in comparison with a program code. But they don't suggest any approaches for including this model as a component of the system itself. Existing approaches for domain modeling during the transition to final stages of a system life cycle tend to lose the semantic component of the data. They only allow to p...

The article discusses the method of the estimation of the permissible degree of the deflection of the spine and of bias of vertebrae. The proposed method is based on measurement of steering angles and degree of deviation of vertebrae by accelerometric transducers, application of neural network algorithms of the processing of capture data for adapt of the system of the diagnostics and of the rehabilitation under patients with different physiological characteristics and disorders of the spine and musculoskeletal sys...