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The Tourism Resort Praid is one of the most dynamic resorts in Harghita County, Romania. In 2006, the settlement was given the title of resort. Since 2006 the resort started an accelerated development and is being affected by a series of new and old geographic risk factors. To determine these risk factors we used the direct observation method, quantitative and qualitative analysis, GIS analysis and representation, and cartographic method. Among these risk factors we will enumerate some natural risk factors like ex...

Appointment of the software system is the solving the direct and inverse problem of the lunar physical libration. The direct problem is to calculate the selenographic coordinates of stars falling within the field of view of the telescope mounted on one of the lunar poles. The analytic theory of the physical libration of the Moon of Petrova N. [1] provides the base for the solution of the problem. The inverse problem is to determine the parameters of lunar physical libration based on the simulated "observable" sele...

The Ashalchinsky bituminous field is located in the southeast of Tatarstan Republic, in south-east part (Volga-Ural region) of Russian platform. The Ufimian reservoir sandstones from above present productive layers blocked by caprocks of Kazanian claystones. Bituminous sandwich of greywacke, fine-grained, loose aggregate, cemented with bitumen. The study of sandstones by SEM analysis showed a high content of analcime - a mineral group of zeolites. Analcim forms crusts consisting of irregular crystal intergrowths. ...

In order to determine the dependencies between the chemical indices of the soils of the automorphic series and the results of spectrographic analysis, the field survey with HandHeld2 spectrograph was conducted at cleaned surfaces of the soil sections at soil sampling site. Data for zonal soils of Chuvash Republic (podzolic chernozem, dark grey forest soils, typical grey forest soils and light grey forest soils) with different erosion degree were obtained. The results of agrochemical inspection were analyzed along ...

Development of energy, nuclear, engineering, petrochemical and chemical industry requires very massive and large workpieces. Requirements for machining workpieces of these department is the necessary adapt to the design and construction of machine tools. Analyses were conducted to carry out the overhaul and modernization for heavy cutting machine SKODA W 200 HC with digital subtraction, turntable S 100 C from 0 to 360°, while the carrying capacity of the turntable 100 t. The complexity of the repairs consisted of ...

Acoustic or phonic pollution is a type of noise pollution caused by noises, a complex of non-periodic sounds with random disagreeable insurgency that affects the psychological and biological state of human and animal organisms. The physical or objective characteristics of the noise are the strength or sound intensity (which depends on the features of the source, the distance and the possibilities of transmission or multiplication), duration and frequency. For the determination of the noise level, sound-meters, whi...

Changes of damage to the belt core that are not controlled during the exploitation can lead to dangerous accumulation of the defects (strains) in the cross cross-section. It can lead to serious weakness and even rupture of the belt. Early detection of the mic rodamage of the covers and evaluation of the increase speed of the damage allows the user to plan maintenance more precisely. Furthermore, it allows more effective cost management when conveyor belt maintenance is scheduled. In this paper, geometric data o f ...

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 ...

Taking into consideration that Romania is confronted with many difficulties in the treatment of wastewater, especially in its rural and less populated areas, this paper proposes to present some possibilities to increase the treatment capacity of wastewater in a small Sequencing Batch Reactor (SBR) plant. The functioning of the SBR operation compartment was automated by using predefined time, i. e., a programmable controller. In order to identify the possible ways in which the wastewater treatment capacity could be...

Natural resource management in the North of Russia has a centuries-long history which reflects the peculiarities of northern territory development. The specific character of natural resource management in the Arctic zone as well as in the North depends on cer-tain natural and social-economic conditions, limiting factors and environmental protec-tion measures. The Fennoscandia Green Belt is an international cross-border project. The primary goal of the ecological corridor is to provide sustainable use of natural re...

This contribution describes developments in the area of plastic recycling aimed at the reuse of waste materials for the manufacture of a useful product. Throughout development of the concept ?modular flood barrier structure?, the recovery of plastic materials was assessed, primarily, plastic waste from automobiles and industry. The investigators filed a utility model application, no. SK 5847 Y12, entitled ?Modular flood barrier structure?. Terms of the type and composition of source material, polypropylene (PP) an...

Samples of ore for micromineralogical research were selected from the core of boreholes. The mineral composition of the ores, their textural and structural features were examined under an optical microscope in reflected and transmitted light, scanning electronic microscope (SEM) and energy dispersive X-ray spectrometer (EDS) with microanalyzer. Mineralization by its composition is sulfide. The nature of mineralization is imbedded. Phenocrysts are presented by separate idiomorphic grains of pyrite, aggregate interg...

The main source of information needed to build, update and maintain spatial databases are aerial images. The biggest advance of aerial images is their capability to efficiently cover large areas. With the continuous development of technology, aerial imaging has become cheaper and more affordable than any time before. With this advancement of technology, large amounts of data need to be processed. In order to extract information from aerial images, they need to be processed into ortho-rectified images and then vect...

A major pollutant in indoor air are volatile organic compounds (VOCs) emitted from materials and building products The indoor surface materials are considered to be studied as the principal sources of indoor air pollution. The source control is the most practical approach to improve the indoor air quality. The measure for indoor pollution?s decreasing seems to be the effective control of volatile organic compounds and indoor odors. The perceived indoor air quality in four rooms with various flooring materials was ...

Salinity of drilling waste is a serious problem, and it is one of the biggest problems at the stage of selecting drilling waste utilization method. The high salinity of drilling waste results from a few causes, i.e. the use of drilling fluids (inorganic salts are commonly used as drilling fluids components) in the process of drilling, drilling in saline formations and also brine inflowing to the well. The investigations carried out on drilling waste has shown that their soluble salts of alkali metals in the form o...

The availability of the Baltic Sea for the largest container vessels is limited primarily to the depth of the Danish Straits. Ships with maximum dimensions of technical for shipping by the Danish Strait are called Baltimax. Currently, the theoretical size of the dimensions of the vessels are as follows: draught 15 m, width 42-48 m, length 240 ? 260 m, capacity 100-120 thousand DWT. Therefore, the authors have analyzed the actual draught consumables container ships of the three largest companies in the world in ter...

Prediction of the effects of underground mining on the surface is connected with the necessity to verify the coefficients of the theoretical calculation of movements and deformations of the slope of a subsidence trough. One of the methods used to verify the coefficients of the theoretical calculation is the reverse evaluation of theoretical drops verified from the results of direct measurements of movements of surface points. The resulting movement of the surface point is resolved into a horizontal component (shif...

In this work, the organic silicon-based composites were obtained from resorcinol, formaldehyde, TEOS, N-(b-aminoethyl)-g-aminopropyl-trimethoxysilane (AEAPTES) as initial materials for carbon-silica composites producing. The solvent was acetone, those molar ratio to resorcinol varied in following: sample S1 - 1:11; sample S2 - 1:14 and sample S3 - 1:19. Gels were prepared by one-stage method. The silica-organic gels were supper-critical dried. It was shown that the heat treatment of silica-organic gels allows gett...

In the Czech Republic, the obligation of municipalities to ensure their residents separated collection of biodegradable municipal waste (BDW) was enacted, nevertheless the issue of further management of thus collected waste has not been satisfactorily solved so far. Material recovery of bio-waste is difficult as capacity of biogas stations and composting plants is not relevantly adequate for processing such a huge amount of material. Also the disposal of final products (compost substrate, etc.) is relatively low a...

In EU countries, it is currently enacted to separate all recyclable and compostable elements of municipal waste. The products of composting biodegradable fractions of municipal waste are finally used in agriculture and horticulture depending on their quality and maturity. When disposing biodegradable municipal waste (hereinafter BDMW), it is always necessary to keep in view that its decomposition is assisted by a wide scale of various organisms out of which some may be a reason of occurrence of serious biological ...

Economic gentrification means bringing more material value to a specific area by increasing its attractiveness and upgrading it. In the case of small deposits with permanently discontinued exploitation (only historical significance) and scarce resources, it is more socially and economically efficient to withdraw the deposits from the balance of mineral resources and enable changes in the management of the area. As a result, it is more possible to introduce different post mining deposit developments, such as using ...

The present paper deals with the study of fluid and thermal characteristics of the metal foam with an open cell structure for use in solar thermal applications. The study of selected parameters was performed using CFD tools based on finite volume method calculation in software Ansys Fluent. Presented simulation was carried out on two types of metal foam elements with a density of pores of 10 and 20 PPI, which were designed and modeled by the authors using CAD tools. The basis of a model formed tetrakaidecahedron s...

The Romanian Ministry of Tourism as the National Tourism Administration, member of the Romanian Government, is in charge of coordination and implementation of the general tourism development strategy. Among other specific domains, thalassotherapy is a new desired touristic sector designed by Ministry of Tourism and local authorities, (Tourism Promotion Office and Licensing and Classification Office) as well as the private sector (NGO?s related to the tourism industry). This has a major role in the balneary tourism...

This article is the continuation of the paper published at the conference SGEM in 2016. European product standards generally do not specify the qualitative requirements for individual product characteristics. EN 14695:2010, which deals with the waterproofing of concrete bridge decks, is not an exception. The national standard CSN 736242:2010 sets quality requirements for bitumen sheets. The type of the modification of bitumen coating is not considered in quality requirements of this standard - the mass modified by...

Using remote monitoring methods, including aerial remote sensing, UAV and LIDAR (remote sensing, 3D UAV imagery and LIDAR) for high-resolution investigations of waves field characteristic parameters near the seaports, gives us the support information for decision making process. Therefore the results obtained in near real-time are useful to create optimal resolution maps for wave?s reflection, refraction and diffraction, depending on necessities. In this paper is evaluated the possibility to monitoring and mapping...

The argan tree (Argania spinosa) plays an irreplaceable role in the ecological balance and in the preservation of biodiversity. Thanks to its powerful root system, it contributes to the maintenance of the soil and makes it possible to fight against the erosion of water and wind which threatens desertification a good part of the region. The limits of the argan tree are fixed by the climate. The argan tree is a thermoxerophytic species, whose distribution area overlaps with both semi-arid and arid bioclimates. In ad...

The literature mentions that marine algae biomass is an important resource of mineral elements, polysaccharides (agar-agar, alginats), proteins and vitamins. The superior valorification of this biomass represents a highly important resource for the pharmaceutical industry, textile and dyes industry, nutrition industry and for soil fertilization. At the Romanian Black Sea Coast the macro-algae biomass envelopment is reported mainly in summer and is registered especially by the green macro-algae group; thus the larg...

Geo-electrical sections were constructed according to electrical resistivity tomography data on Shahtama tailings of Mo- ore processing plant (Transbaikal Kray, Russia), located in the permafrost zone. The capacity of technogenic deposits was determined and the zone of the fault was delineated. A wide range of electrical resistivities (ER) of mine tailings was revealed due to their different particle sizes, humidity and partially frozen condition. The statistical analysis of the distribution of resistivity of tech...

Putna?Vrancea Natural Park (38,204 ha) is located in the eastern part of Romania, the upper part of Putna River Basin (Curvature Carpathians). It includes valuable complex forest ecosystems, mountain meadows, also known for the large variety of flora and fauna. Over the past almost thirty years, the study area was subject to diverse natural and man-made environmental stressors which had significantly influenced land use/cover changes with a particular impact on forest-covered areas. The current paper is seeking to...

The article presents the results of the research carried out in order to evaluate the possibility of using the groundwater of the Raba River basin for human consumption, using an indicator dedicated for groundwater (GQI). For this purpose an existing database that contains the results of analyzes of groundwater samples collected from October to December 2005 from wells (18 samples) or springs (21 samples) located in the Raba River basin was used. Samples were taken by one person according to the procedure describe...

Sulphate is the specific anion present in the acid rock drainage (ARD). Although sulphate is considered benign or with low toxicity, some countries have set limits for the wastewater discharged to natural receivers, often 500 mg/L or 600 mg/L. By conventional treatment of the ARD with calcium hydroxide, some gypsum can precipitate, depending on the ARD initial sulphate content, but the conformity for sulphate will not be achieved, because the concentration correlated to gypsum solubility exceeds the limit value by...

The relief, as genetic factor and ?support? on which the grassland areas are engrafted on, may be equally considered the major decisive element for vegetation?s type, aspect and consistency, through altitude, slope and orientation. This study will highlight the influence exerted on grassland areas by relief factors, in mountain and sub-mountain regions, and subsequently it will determine the differentiated landscaping ?norms? in concordance with the singularity of each analyzed sector. The grassland assessment wil...

The biogas obtained through processing of livestock residual waste (dung, manure and residual food), food production waste (fruit, vegetable, meat and dairy residues) and also effluents from industrial and municipal wastewater treatment plants can have a significant contribution in energy supplying and environmental protection. In order to determine the quality of this renewable fuel, it was developed a fast gas-chromatography method, through which it can be establish the calorific values, that have an important i...

For the bridges under rehabilitation, especially for cable stay and suspended structures, situations that can lead to the increase of strain in the structure may occur during construction works. Because of that, monitoring the way the bridges behave during works becomes necessary. Monitoring them during rehabilitation under traffic is essential, because alarms are triggered when accidental actions take place or when certain strain values are exceeded. The bridge on DN39 over the Danube ? Black See channel in Agige...

Several spatially distributed soil moisture estimates of different origin, spatial and temporal resolution are currently available for Europe or individual countries. These estimates range from gridded observations and satellite products to the estimates of large scale and/or spatially distributed water balance models. The estimated soil moisture is potentially useful for improving the water balance assessment with hydrological models in gauged and ungauged basins and reduction of uncertainty in the estimated para...

The effectiveness of enrichment process of run-of-mine copper ore (at KGHM?s ore enrichment plants) depends on the selection of appropriate working parameters of processing machines which are customized mainly to fit the fed rock type. Therefore, the knowledge of lithological composition of run-of-mine copper ore fed to the ore processing plant can significantly improve the effectiveness of the enrichment process. The issue of optimization of enrichment processes with the help of the use of in-situ sensor technolo...

In this study, the antimicrobial activity of eight natural extracts (Citrus bergamia, Ocimum basilicum, Melissa officinalis, Eucaliptus, Pelargonium graveolens, Argania spinosa, Ricinus communis) over some nosocomial bacterial strains isolated from hospital units (Staphylococcus aureus M215, Escherichia coli M49 and Streptococcus pyogenes M372) has been studied using the diffusion method. The highest antibacterial effect was exhibited by the basil (Ocimum basilicum) and eucalyptus (Eucaliptus) oil (0.7 mm and 1.3 ...

Ultra clean coal (UCC) contains less than one per cent by weight ash. It is created via chemical leaching, because conventional, physical separating techniques cannot achieve this extremely low mineral content. Potential uses for ultra clean coal, apart from power generation, include for example directly fired into gas turbines ? increasing the efficiency of power generation and eliminating the need for ash dams, production of graphite and carbon fibres, wood charcoal alternative for silicon smelting and others. I...

Natural Killer (NK) cells are large granular cytotoxic lymphocytes that play a role in the innate immune response against tumour cells and virally infected cells. In pathogen-free chickens, these cells are thermolabile at 37oC and resistant to treatment with anti-B or anti-T cell anti-sera. This is in contrast to humans and rats, where NK cells are resistant to temperature manipulation for 30 or 60 minutes. While some reports suggest that NK cells are adherent and phagocytic, others suggest they are non-adherent a...

Rhythmic climate changes determine the necessity to refer to long time series to detect low-frequency vibrations of climatic parameters and their influence on the growth processes in ecosystems. Dendrochronological research of pubescent oak (Quercus pubescens Willd) in forest communities of the foothill forest-steppe (250-350 m a.s.l.) and core samples of buried wood in comparison with modern and reconstructed climatic conditions was carried out. The purpose of work was to develop regional tree-ring chronologies f...

Growing a healthy, stable and quality forest stands while using their products in the most effective way possible is the primary aim of every forest manager, as well as the forest?s owner, considering the fact that wood mass is still the most important source of income for the forest management in Slovakia. As a result of wood logging and conversion, a significant amount of waste wood mass is left over in the forest, manipulation sites, wood stocks, warehouses and saw pits. The waste wood, consisting of pieces of ...

This paper presents a possible alternative solution to cold a retail center located in Brasov, Romaine. Absorption machines using thermal energy are excellent alternatives to mechanical refrigeration.The proposed solution uses a single stage absorption systems working with LiBr-water. This solution uses the water as a refrigerant which has a null direct impact on the environment (ODP=0 and GWP=1).The proposed scheme is the result of experimental research conducted by a team from the Thermodynamics, Heat Transfer a...

Remotely Piloted Aircraft Systems (RPAS), which have become more popular in recent years, can obtain data on demand in a short time with a resolution within centimeters. Data collection is environmentally friendly and low-cost from an economical point of view; of course it is best for small areas, such as square km?s, only by using winged drones or in a few hectares by use of multi-copters. Both types have their advantages and disadvantages. Our laboratory of photogrammetry has, since 2012, focused on using RPAS (...

Miscanthus sp. is a perennial grass cultivated in the European Union with multiple uses. It can be used as a commercial energy crop or as a resource for easy construction materials and isolation. It can also be used as a source of CO2 capture and restraint. Miscanthus is a plant which demand low needs for fertilization, adapting easily to less fertile soils. In this way it was taken into study the behavior of this species on a sandy soil, poorly fertile from Southern Romania, under the influence of some doses of n...

Soil organic matter is fundamental for the long-term sustainability of agro-ecosystems. An experiment was conducted on the experimental plot aiming to determine if organic matter represented by mulches with wool wastes and wood chips could induce changes in soil microbial community composition and activity and effects on improvement of soil suppressiveness to plant pathogens from the genus Fusarium. The soil was Technosol and the organic culture of edible roses was planted in 2015. In the summer of 2016 the soil w...

In this research the regularities of heavy oil conversion in supercritical water and the presence of finely dispersed caustobioliths and metal oxides were shown. The process of thermo-catalytic conversion was carried out in a closed reactor under temperature and pressure conditions, providing the transition of the aqueous phase in supercritical fluid. To investigate the selectivity of catalysts, different compositions of catalyst systems were prepared and studied for their effectiveness in the process of degradati...

Cladocera (Crustacea: Branchiopoda) constitute a major component of the planktonic and benthic fauna of the high-latitude lakes. They are tolerant to extreme environmental conditions and are one of very few groups of aquatic animal that are not only able to persist in cold thermokarst lakes but to build up viable populations. Subfossil Cladocera were sampled from surface sediments of 20 thermokarst lakes along a transect crossing the tree line in the Khatanga-river basin, south of Taymyr Peninsula, north-central S...

Unmanned aerial vehicles (UAVs) - the, so-called, drones, are changing the way of work of many professionals. Drones are characterised by small dimensions, relatively low prices, simple navigation and the wide possible applications; this results in growing interests in their use. In the process of real estate validation a real estate expert is obliged to perform the site inspection and to analyse a real estate with respect to its surroundings and to prepare a report of those operations. It should be assumed that t...

In order to assess the presence of different raspberry diseases experiments were established during the years of 2015 and 2016, at two locations (Llapashtic? and Peran) in the municipality of Podujevo and two (Mramor and Barilevo) in the municipality of Prishtina. In the experiment were involved four raspberry cultivars (Polka, Autumn Bliss, Willamette and Meeker), which represents the most prevalent cultivars cultivated in our country, while the experiment was conducted according to the method of randomized block...

Temperature is a primary factor affecting the rate of plant development. Extreme temperature events have become more intense, more frequent, and longer in recent years. Extremely high and low temperatures may have a detrimental impact on the productivity of trees in critical phases of their development. The work presents the results of phenological observations of two broadleaved tree species: European hazel (Corylus avellana L.) and sessile oak (Quercus petraea Matt.) with the main emphasis on the impact of the t...