ISSN 2344 – 1283, ISSN CD-ROM 2344 – 1291, ISSN ONLINE 2344 – 1305, ISSN-L 2344 – 1283
 

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Sebastian CIUBAN

The aim of this paper is to compare the position of a certain GNSS satellite with respect to an ECEF (Earth Centered Earth Fixed) frame, obtained from broadcast ephemeris and precise post-processed orbits. To accomplish this, RINEX (Reciever Independent Exchange Format) and SP3 (Standard Product) files were downloaded from the International GNSS Service (IGS) corresponding to the same day. Furthermore, in order to assess the error of the broadcast ephemeris, several routines were developed under MATLAB environment, with the aim of importing the data, comparing the orbits and plotting the results.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Serghei CUCOREAN, Tatiana CUCOREAN

The current condition of the evaluation of the real estate’s is analysed. The results of the application of the massive evaluation of the real estate’s are described. The strengths and the weak points which appear by applying the massive evaluation of the real estate’s are analysed. The application of a more advanced and correct appraisal of the value of real estate’s is proposed, by using software which is created especially for this purposes. The steps of developing the massive evaluation of the real estates in the Republic of Moldova are mentioned.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Mihai DUMA, Samson FILIPOI, Tudor Alexandru FLOREA, Denis MIHALI

The present papper deals with the aspects of precision, obtained in the case of front and contra-front projects and in cases in which the mining project has to get to other existing subteranian projects. From an economic perspective it is very important that the piercing to be done properly to avoid additional work to correct the deviations that occurred.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Cosmin-Gabriel GHERGHINA, Mihaela STANICA

The target of this paper is the analysis of some old maps of Transilvania from different periods of time in order to obtain information about the planimetric position accuracy of cities and also information about the maps. In the first part will be presented each map and operations used to analyse those maps. In the second part the results will be presented and compared in order to get to a conclusion.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Simona-Mariana HRISCU

The purpose of this paper is to perform a statistical analysis based on many factors that influence accuracy of determining the coordinates of the points in the forestry sector, points determined by GPS technology, the method used is Stop-and-go. Factors influencing the accuracy of determining the points are: composition stands, consistent, age, land orography, exhibition etc. This paper aims forests that are under the administration of RPLP PC Zarnesti, area where there is already a GIS project, which includes the observations on the factors that influence accuracy, listed above, and coordinates obtained from measurements made by GPS technology. The conclusion resulting from the statistical analysis performed is that the accuracy of determining the coordinates of the points by GPS technology is greater on heights and much weaker on valleys with North-South exhibition.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Ana-Maria IONESCU

The purpose of this study is to compare the precision of the geodetic points determined with GNSS methods using statistical calculations. Therefore I realized a statistical analysis of the results obtained after processing the data. The analyzed points are localized in the surroundings of Braşov City, Romania, being in number of about 557, of which 541 RTK, and 16 static determined points. Depending on the area, exposure and a number of other factors the precision of the points was different. The stationary time for the RTK determined points varies from minutes to seconds, and for the points determined using the static method the stationary period was much longer, namely around two hours. The stationary period on each point as well as the area in which the points are found directly influences the precision of the geodetic points coordinates.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Valentin MIHALCEA

In this paper presents new methods for measuring the three-dimensional position of objects with a very high speed embedded in a sensor measurement called LST or Laserscaner land with high resolution and very good accuracy of the 3D positions of object points only few millimeters. Object space is bale beam columns or lines, points so measured in their entirety forming as so-called cloud points.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Petruța OLTEAN, Dan MUCEA

Through studies and research in this paper was intended to carry out the calculations of volumes of clay excavated from Corbii Mari quarry, Dâmboviţa county, in order to locate and quantify the amount of material excavated from an excavation in case of embankments. Topographic surveys were made by specialized teams strictly following the steps of obtaining the topographic plan: enriching the support network, obtaining the levelling network and obtaining the topographic plans. The measurements followed by office calculations performed by automated methods and through dedicated software will determine the volumes of the amount of sterile soil respectively the amount of extracted clay.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Diana-Ioana PLOSCARIU, Lavinia-Diana MOLDOVAN, Casian Razvan REBREAN, Mircea Andrei VUSCAN

This paper aims to present a comparative study of basic geodetic problems solved on the ellipsoid or sphere. The basic geodesic problem refers to the geographic coordinate system that consists of ellipsoidal: geodesic problem direct and inverse geodesic problems. Thus, using direct geodetic problem is calculated coordinates of geodesic points forming a network of the geodesic and geodesic inverse problem element is calculated initial surveying , those distances and azimuth , and verify the calculations made at the geodesic problem directly. The ultimate goal of the calculations performed on the reference ellipsoid is the determination the coordinates of the points of the geodetic networks of support. There are several ways of solving the basic geodetic and this diversity was conditioned by the need to decrease the volume, increase the accuracy of the final results, even in terms of geodetic distances, as well as by means of calculation under consideration at your disposal.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Florita-Ionela STRUGARI, Raluca-Camelia MURESAN, Alexandra-Madalina GRAD, Alina GIURGIU

The observation executed on the topographical surface in the points of the triangulation network are projected on the reference surface which is the ellipsoid of rotation.The ellipsoid of rotation can be approximated with a sphere of avarageradius.The triangulation networks of first order are always solved on the reference ellipsoid or on the sphere of medium radius.Legendre and Soldner created two methods of solving the small spherical triangles using relations from the plane trigonometry to make easier the calculation.The comparison of the obtained results through this two methods was realized for triangulation points form Cluj county.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Loredana TECAR, Bianca Balulescu Marica BURESIN

In this paper it is studied the development of Banat’s University of Agricultural Sciences and '’King Michael I of Romania '’ Veterinary Medicine between the years of 1987 – 2013 based on images taken from earth satellite. The analysis of this images are made using a program called ArcGIS. With the use of this program was obtained six normalized differences indexes and two combinations of spectral bands; in which it is possible to see how the area of USAMVB Campus had developed in 26 years. Satellite imagery consists of images of Earth or other planets collected by artificial satellites. Interpretation and analysis of satellite imagery is conducted using specialized remote sensing applications. Remote sensing refers to the use of aerial sensor technologies to detect and classify objects on Earth (both on the surface, and in the atmosphere and oceans) by means of propagated signals (e.g. electromagnetic radiation). Satellite imagery is also used in seismology and oceanography in deducing changes to land formation, water depth and sea bed, by color caused by earthquakes, volcanoes, and tsunamis. Because the total area of the land on Earth is so large and because resolution is relatively high, satellite databases are huge and image processing(creating useful images from the raw data) is time-consuming. Depending on the sensor used, weather conditions can affect image quality: for example, it is difficult to obtain images for areas of frequent cloud cover such as mountain-tops.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Andrei-Șerban TOMPEA

According to Law 350/2001, the Zonal Urban Plan is the tool of urban planning area, of specific regulation, which coordinates the integrated urban development of local areas characterized by a high degree of complexity or a pronounced urban dynamics. The Zonal Urban Plan provides correlation of integrated urban development programs of the area with the General Urban Plan. The zonal urban plan is based on terrestrial measurements. The measurements were performed using total station and the GNSS technology. The plan was accomplised in ARCGIS software, which allowed obtaining quality cartographic elements and development of complex analysis. The studied territory is the Zizin area, situated in the East of Brașov City, which has an area of 298 hectares.

[Read full article] [Citation]

Published in Scientific Papers. Series "Journal of Young Scientist", Vol. 2
Written by Alexandra TRIF

In this paper I intend to represent the maximum and minimum air temperatures for every month on record in some areas of Romania. I chose to present this town on a map and for this I used StoryMap-ArcGIS online application because it’s always easier to read a map. I inserted data, metadata and photos for every single location.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Sebastian ZAHARIA, Dan TIURBE, Vlad ŢIFREA

Through studies and research in this paper was intended to carry out the calculations of volumes of clay excavated from Razboieni quarry, Alba county, in order to locate and quantify the amount of material excavated from an excavation in case of embankments. Topographic surveys were made by specialized teams strictly following the steps of obtaining the topographic plan: enriching the support network, obtaining the levelling network and obtaining the topographic plans. The measurements followed by office calculations performed by automated methods and through dedicated software will determine the volumes of the amount of sterile soil respectively the amount of extracted clay.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Andreea STOICA

This paper presents a method of determining the coordinates of new points based on the measured distances (trilateration) using the indirect measurement method. This method is treated theoretically and numerically using Gauss-Markov method, the matrix treating. Another contribution consists of the Young Test to verify the random errors.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Mihaela - Magdalena STEFAN

The University campus has undergone transformations over the years with regard to use of the land. In the early years of college I saw undeveloped land, then a parking lot, the parking lot was reduced by making way for a collection of tulips and finally became an oasis of beauty. Now, the green space around Campus offers a recreation corner through the landscape function. This paper proposes a spatial and qualitative mapping of the dendrofloral. Spatial by collecting coordinates corresponding to each copy with the help of GPS TRIMBLE Juno SB handheld using TerraSync software. Qualitatively, through the identification and description of each copy met with elements of a useful characterisation of green cadastre. A map of the distribution of dendrofloral, carried out through the use of CAD software, contains species reporting directly from the coordinates.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Camelia-Georgiana SEMEN

This paper intends to provide the necessary steps for the preparation of the Physical and Administrative Chart of South America. For the representation of this chart the Bonne pseudoconic mapping projection has been used. In order to provide more details regarding the represented area, a database was achieved to offer useful information to any person passionate about traveling and always discovering new places. The value of the map is outlined by attaching this database, that is designed in Microsoft Access and sends out to the users text data that can not be graphically represented on the map. The connection between the database and the map has been established using the AutoCad Map program.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Gabriela RISTEIU, Alexandra POP, Teodora SPORNIC

Reference system transmission from surface to underground consists in transmitting in the underground the coordinates of a point and a guideline from which lifting is done in the underground network. Depending on the access roads, the reference system transmission into the underground is realized by several methods including transmission on a vertical shaft, transmitting on two vertical shafts, transmitting on coastal galleries or inclined plane. In case of transmitting the reference system from surface to the underground through a vertical shaft there are also known several methods and in this paper it is studied the mechanical transmission. Mechanical transmission of the reference system from surface to the underground consists in designing the wires in underground and determining their position of equilibrium respectively connecting surface and underground measurements. This paper proposes an analysis of accuracy index analysis of the measurements connection on surface and underground depending on which connection method you choose.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Denisa Ana-Maria POPA

This presentation brings into your attention one of the possibilities to create a digital sky map (combining the graphical part with the textual one). This map is realised in order to represent the northen hemisphere of the sky vault using a right azimuthal projection, equidistant on the meridians, which contains over 700 stars having the magnitude less than 5, joined in 42 constellations. To achieve this purpose it was used a scanned map in order to draw the constellations limits and the zodiacal signs while the representation of the stars was possible using their equatorial coordinates from the FK 5 catalog. Regarding the textual part of the map this project shows how to create a Microsoft Access database and the method / the steps by which it is attached to the graphical map in a dwg. format. So, it is a fact that using digital maps is more advantageous than using the analog ones, because it is possible to store a much larger amount of information.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Dan ONIŞOR , Ioan NEGREANU , Ionuţ STOICA , Daniel ALBUL

The detour circuits of modern mining pits represent a complex system of mining works connecting the pit with the main floor galleries. They are composed of straight sections (pit ramps) and curvilinear portions (detour galleries). The length of these detour circuits are designed based on the production realized on that horizon, the transport intensity on the pit and how well is the transport applied.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Casian-George NEAŢĂ

Presently, drought can be identified and monitored using a wide range of remote sensing methods. Over the last years, drought conditions were reported in several areas located in south of the country, in Giurgiu, Teleorman, Olt and Dolj counties. This study aims at identifying the drought affected areas and the effects of the drought on vegetation, based on satellite data acquired by Landsat. Both test sites covering the counties mentioned before are of major importance for agriculture. It is estimated that the agricultural area of the Giurgiu County was of approximately 238,000 hectares in 2012. The Romanian Plain has a rich and fertile soil that is very suitable for the cultivation of grain, sunflower, and technical and medicinal plants. Dolj County is located in the most fertile region of the Oltenia Plain benefiting by favorable climatic and soil conditions. Its total arable area is about 488,000 hectares, according to 2009 statistics. The county is covered in the southern part by large sandy areas and an impressive number of lakes formed either by flooding or precipitation accumulation. Remote sensing is an important tool for drought monitoring due to its capacity to observe large geographic areas using frequent acquisitions. Moreover, remote sensing offers the possibility to study archive satellite data and therefore to make better predictions for the future. The Normalized Difference Vegetation Index (NDVI), together with information on temperature and precipitation were used for estimating the drought index. In conclusion, the early identification of drought is important for mitigation efforts, while the monitoring of the drought effects contributes to more accurate crop yield estimations.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Beniamin MIRZA, Ciprian Florin ISPAS, Ionut Constantin BARBULESCU

This article is aimed to present a map transformation from analogousous into digital format, using the latest version ArcGis 10.1 software. In order to reach the digital format, certain steps must be completed that are mentioned in the paper. All topo-geodetic works are made in the Stereographic Projection 1970 which is used in Romania today. The process begins by scanning map using a high precision scanner. Afterwards, the map is inserted into the ArcGis 10.1 program, georeferenced and finally digitized by using elements such as: point (fountains, elevation terrain, etc.), lines (roads, electrical network, rivers, etc.) or polyline (villages, forrests, orchards, etc.).

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Catalin Ciprian MARINESCU, Alexandra TRIF

3D Laser Scanning, also known as terrestrial LIDAR, has been commercially available for several years, providing a detailed, reliable, and accurate solution to many surveying and measurement problems, and has become well adopted for plant and facilities applications where accurate three-dimensional detail of complex facilities is critical for efficient design and construction projects. Terrestrial laser scanners deliver a dense point-wise sampling of an object’s surface. For many applications a surface-like reconstruction is required. The most typical example is the visualization of the scanned data. In many respects, laser scanning follows the same general surveying process as other instruments: data is collected in the field, adjusted to the appropriate coordinate system, and relevant features can be extracted to produce deliverables ranging from topographic maps, coordinate values, 2D or 3D CAD drawings etc. This paper describes typical scanning project from field-to-finish, including common surveying applications.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Gabriel Adrian KEREKES

The paper presents an easy method of creating small scale maps using an open source GIS program named “Quantum GIS” or “QGIS”, as well as open data freely available on the internet. The main focus is on transforming geographic information from a given coordinate reference system to an user defined one. This paper is concerned with both the application of projections defined automatically by the software, as well as the classic method of calculating the grid nodes using the map's equations. Both raster and vector data have been included in the process of producing this map. After transforming the necessary data, a brief layout design has been created in order to give the map an adequate form for plotting. The coordinates computed using the map equations have been overlaid on the coordinates given by QGIS in order to validate the results and verify the correctness of the map. All in all, the aim of this paper is to show the power of making high quality cartographic products and manipulating geographic data with the aid of open source GIS programs, given the precision achieved using such methods.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Daniela IORDAN, Daniela Cristiana DOCAN

The paper aimed to present the main delivery format for the LiDAR(Light Detection and Ranging) elevation data and the possibilities to access and use all informations that a vendor provides them. The GIS (Geographic Information Systems) software have extended their capabilities to store and analyse the LiDAR data. For several years there have developed different tools for obtains varied geospatial products based on LiDAR data. The case study uses ArcGIS technology to briefly present several options available to store and visualize the LiDAR data and to combine multiple data source in order to obtain a complete representation of terrain.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Adrian-Cosmin GHIMBASAN

The introduction of cadastre in Romania as a matter of national interest and community obligation, in order to guarantee property rights, real estate market development, credit guarantee, etc., is dependent upon the digitisation of the basic cadastral plan at a scale of 1/5000 all across Romania. The technologies used are varied and the work is complex, involving large expenses. Within this context, the present work aims to determine whether and to what extent this cadastral plan can be obtained through the transformation or vectorization of the existing national orthophotoplans. The methodology is based on comparing the vectorised cadastral plan with the one obtained by level surveys, considered as a reference, and applied to six units (land areas) located in two different places. Comparisation has focused on the main stages of the vectorization process, namely on easily identifying parcels (property estates) and tracking their borders, on markings positioning accuracy, on surface errors that may arise in relation to real errors, and on aspects regarding performance, including hardware and software logistics. The results are good, fully satisfactory, suitable for practice in many categories of surveying projects and particularly advantageous in terms of performance that is ensured with minimum equipment. Some difficulties arise only in special cases on site, when additional evaluations and monitoring is required.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Lavinia-Ştefania GAROIU

The paper is aimed to present the facilities of using modern tools in establishing the regulation of the urban development of an industrial area from Braşov, theMarubarea which includes also the Tractorul Park. The Zonal Urban Plan creates a framework for a coherent development of a consumer service area, offices and a clean industry, by providing a series of objectives including permissions and restrictions. This plan is based on terrestrial measurements using different surveying methods, chosen so as to reproduce the land as closely as possible. The cadastral monitoring of this area and the main aim of the Zonal Urban Plan to reduce the level of pollution led to an analysis of the capacity of taking the pollutant provided by the industrial zone by each tree from the near park.The results of the pollution studies allow the issuing of limitations rules regarding the traffic from that area. Therefore the conclusions refer to the necessity of improving the air quality and also to the sustainable development and the conservation of the urban green areas from Braşov.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Alexandra DUŢU

The paper aimed to present the importance of Geographic Information Systems within the progress of various activities in terms of improving life conditions in the urban areas and also for promoting alternative methods of transportation such as bicycling. With this purpose in view it was submitted to examination a representative area of the capital, regarding the road network and its bordering estates. Through the instrumentality of Geographic Information Systems it was given the opportunity of inventorying them while creating a specific date base able to serve as a decisional support for the local public administration authorities. Given the fact that the textual information accompanies the graphic data it was easily established the way in which the transport roads could be adjusted so that they could insure the safety of all of the traffic participants.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Alina CSISZER

Quantifying the impact of environmental factors in a mining area involves a large number of monitoring points and cover a large area of land. The quality of environmental factors we deduce in several ways, like surveying or analyzing the samples in laboratory that requires many time and in many situations, unjustified high costs. This paper’s purpose is to subject to attention a method that uses the new technologies in the remote sensing field in order to obtain secure information and low costs. This technologies are using in the same time GIS systems that are particularly useful in creating, analyzing and processing geo-spatial information. Implementing this techniques I suggest that we can control and prevent the impact caused by mining activities, we can improve the exploitation techniques and the most important, we can assure the safety of the employers.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Serghei CUCOREAN, Tatiana CUCOREAN

The paper discusses the information collection and management process, taking into consideration its economic aspects. It analyzes the classification procedures for the information applied in elaborating the information systems and aims at examining ways to change the economic value. It is recommended that the design process should also include the economic value into its factors.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Serghei CUCOREAN, Tatiana CUCOREAN

The present paper analyses the information database for the villages in the Republic of Moldova. It also describes the study results of the information use by the local public authorities. The analysis has included the activity of seven village halls in the Republic of Moldova. The paper proposes the development of an information system model aimed to correspond to the complex needs of the villages.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Alexandra Georgiana CENUŞĂ, Alina Raluca MUREŞAN, Mihăiţă NICOLESCU, George Mihăiţă STANCU

This paper has as main purpose the determination of the small water catching areas using the scientific method. This method is applied for the Voinesti water catchsituated in the west extremity of the sub-Carpathian curvature. With this method the most important parameter is the one referring to theflowing coefficient.The global flowing coefficient is determined as an weighted average of the partial flowing coefficients corresponding to the different surfaces. This depends on the type of vegetation, on the soil type, and the inclination of the ground. GIS implementation for calculating the maximum flow by using the scientific method was made with a soft that functions under Arc Desktop 9.3. The results obtained were compared utilising the reduction method.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Beniamin BRUDA, Dorin Nicolae BÎRSAN

Our project consists in studying the possibilities of increasing the degree of automation in using prisms, measuring with a Total Station, with the purpose of increasing the efficiency of measuring. Basically the project presents an automat-tripod for the prism, which will automatically verticalize the prism pole, bringing it in the correct position for measuring. The automat-tripod has 2 gravitational sensors, a microcontroller and 2 motors that extend the 2 legs of the tripod in order to realize the verticalisation of the pole. Realizing this invention would lead to minimise errors produced by incorrect position of the prism in the moment of the measurement, and also, in case of using more than one prism, a technician can manipulate more prisms on automat-tripod, which means increasing work productivity.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Domantas BRUĆAS, Valentin MIHALCEA

For testing of the geodetic angle measuring instruments, such as theodolites and tacheometers widely implemented in construction engineering, other measuring instruments and devices are used. The errors of these instrumentand devic-es must be also determined and evaluated. Evaluation of the influence of various features of the instruments on the accuracy of measurements allows to eliminate the determined errors or at least to reduce theirinfluence. Such evalua-tion is especially important in the case of precise measurements. However it is also a very complicated task due to the lack of references of the high enough accuracy. In this paper a principle of determination of the influence of angle measuring instruments, such as autocollimators, mirrors and turn tables (used for testing of geodetic instruments), on the accuracy of angle measurements by means of correlation analysis with some practical tests is presented.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Bianca Elena BADULESCU

This paper aims to present the use of 3D GIS for properties inventory and improvement of topographic data for Manastirea town (Calarasi County). The used sources were provided by local authorities and public institutions, and consist of plans and topographic maps, orthophotos and cadastral plans. The data was processed as follows: digitizing maps and data extraction from orthophotos by image interpretation, field data collection, GIS database design and implementation, a 3D analysis and a virtual reality model demonstration. It will be presented the three-dimensional data acquisition and the modeling and reconstruction method for objects with realistic visualization. In conclusion, I wish to demonstrate the applicability of this application in areas such as surveying and architecture, as implemented recalling directions: restitution facades in order to restore the execution of reports architectonics construction and reconstruction of historical monuments or historical monuments initial image with high degree of degradation.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Zsuzsanna BACSO, Alexandra BOLCHIS, Alexandru BURA

According with the theme, the project will include implementation of a geodetic support network using modern geodetic and topographic methods in the Experimental Teaching Resort of UASVM – Cojocna, to locate and monitor various existing and future objectives and analyzing mathematical models used to determine the parameters grid points and positioning precision indices. Also, the network will serve as a geodesic polygon in which students from MTC department will conduct their annual practice. The need for a new geodetic support network in Cojocna Experimental Resort area, with an area of 667.5 hectares, lies in the fact that the point signals from the triangulation network and their terminals, in most of them, were destroyed. Creating the support network through modern methods, targeting global positioning new technologies and advanced instruments that will lead to obtaining high accuracy in point positioning, compared to the old technology and shorten the measurements execution and calculations. In essence, research team aims, after the recognition of the land, to realize location, measurement and processing of functional-stochastic models, to determine the coordinates of the support network points, used delineation and monitoring various objectives of the resort. The project will also include, digital support of the support network, and a comparative study of the accuracy of positioning points obtained by global positioning methods and trilateration method.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Vlad-Cristian TUDOR

The depth aquifer has an important role for ensuring water treatment . In many of these cases abstracted water is loaded with iron compounds , and needing special processes for the treatment. This paper presents the results of water treament from depth drill, loaded with iron compounds using coagulation-flocculation reagents.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Denisa Mihaela GRIGORE

Wastewater treatment plants are important objectives to ensure the quality of sources of water . The paper presents some aspects of determining the time for priming of biological processes in wastewater treatment plants , identification of specific steps and processes priming , reducing costs and to ensure a safe exploitation.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Madalin Ionut COSTINESCU

This article presents a parallel between the two countries in Eastern Europe on organic farming, namely Romania and Serbia. Throughout the paper are developed common elements and differences between the two countries on agricultural areas in the ecological system, certified organic products, their sales markets, the criteria for certification of organic products, associations and representative companies and Swot analysis of each Organic farming. It was analyzed the period from 2000 until present day, during which the concept of organic farming was implemented, becoming more effective by practicing it and by supporting both governments through laws and EU directives. Due to high agricultural potential that both Romania and Serbia have, both countries could become an important source of green products for both the European Union and the world for a long time.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Silviu AUREL

The main objective of this study was to test different methods of analysis and interpretation for satellite images used in the monitoring of natural disasters, i.e. floods, fires and earthquakes. The methods were applied on satellite images acquired by different types of missions in terms of sensor (optical and radar), spatial and spectral resolution. We used optical SPOT images with a spatial resolution of 20 m that are acquired in 3 spectral bands, Landsat images with spatial resolution of 30 m, 7 spectral bands and TerraSAR-X radar images with a resolution of 3 m. The satellite data used in this study consist of: Landsat images downloaded from free online archives (© USGS) as well as SPOT and TerraSAR-X that were provided by the Romanian Space Agency (ROSA ©). In order to obtain optimal results, the most appropriate input data should be represented by: radar images for earthquakes and floods and optical images for fires and floods. The first case study focused on the floods in the Eastern part of Romania, namely the Siret river floods on the Nanesti-Silistea sector in July 2005 and the Prut River floods that took place in late July and early august 2008. The second case study was represented by the forest fires of Corsica, which is the third biggest island in the Mediterranean Sea, located at a distance of 170 kilometers south coast of France and 80 kilometers west coasts of Italy. These fires have occurred in August-September 2003, when 27,335 hectares of vegetation were burnt. The third case study consisted of the Haiti earthquake that occurred on January 12, 2010, at 4:53 p.m. local time. It was a major earthquake with a magnitude of 7.0 on the Richter scale. The epicenter was located near the Port-au-Prince capital. The processing methods (image classification and change detection) were selected and adapted for each type of satellite data. In conclusion, remote sensing is very useful in monitoring the effects of natural disasters. A very important aspect is choosing the optimal data depending on the disaster type (floods and earthquakes – optical and radar, fires – optical). Equally important is the resolution of the images in relation to the investigated phenomenon. For example, in the case of the Haiti earthquake, satellite images with a spatial resolution better than 30 meters would have been more useful.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Dorina Maria VINŢAN

The paper aimed to assess the quality of wastewater resulted from the water treatment plant of a porcelain factory from Alba Iulia. Two of our society’s biggest problems are water pollution and wasteful use of freshwater. Although industry is not the main user of water resources, it is the main responsible for water pollution. Monitoring of porcelain industry wastewater provided the information needed for the identification of water pollution problems. The following water quality indicators have been analyzed: pH, suspended solids, fixed residue, chemical oxygen demand (the dichromate method), calcium and aluminum. During the year 2012, the values of the analyzed indicators didn’t exceed the maximum admitted limits established by NTPA 001, except by suspended solids, which recorded higher values for all analyzed samples. In conclusion, the monitoring of the porcelain industry wastewater revealed the fact that the main pollutant generated by this economic activity is represented by suspended solids, whose removal requires additional water treatment methods.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Andreea Cristina STANCI, Petru Dan COȘARIU

One of the sources of pollution in the Hunedoara is the emisile of particulate on the chimney of CET Mintia and another source is ash resulting from the technological process stored in the cinder and ash deposits. The main purpose of this work is to identify areas affected by pollution produced by CET Mintia through the study of dispersion of atmospheric gases emitted by burning solid fuels and ash particles involved in dross and ash deposits. The main pollutants emitted the chimney are sulphur dioxide, nitrogen dioxide, carbon dioxide and particles of very fine ash. Deposits of dross and ash poses a major risk of radioactive pollution because of the high levels of radioactive elements.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Catalina STAN

One of the products obtained in a wastewater treatment plant is the biogas wich consist in a mixture of biogenic gases resulted from fermentation process of various organic substance. For a wastewater treatment plant the energy obtained in this way is important because is a renewable energy. The installations for biogas production in wastewater treatment plants are a very important component of it.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Bogdan George RUJOI

The study presents the quantity and quality of demolition waste coming from demolition sites in Bucharest. Analyzes of waste were made in order to explore the possibilities of reusing them as components of building materials . It is shown that a large amount of waste from building demolition is a reusable material. Basic oxides of calcium and magnesium in waste can adversely impact soil if deposited directly for a long time, by changing the soil pH and by diluting humus . For a better evaluation of the waste samples, the carbonate concentration was studied. Demolition waste have a large quantity of inorganic components, if the waste is deposited at the limit of the town, it can affect the productive soil for any type of crop by reducing soil fertility. Results demonstrate that the recycling of demolition waste is useful for the construction industry.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Ana-Maria Laura PETRUȚA

Mathematical modeling of water movement and dispersion of pollutants in sewage, is a major environmental problem. Increasing the number of pollutants, concentration, appearance of new compounds with unknown side make this a major issue in the operation of sewer networks. This paper aims to pesente several aspects of the movement of water and pollutants in sewage.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Nicolae OLARU

The paper presents experimental equipment for bulk grain aeration in small farms. The operation of this equipment is based on the kinetically energy produced by pneumatically shock wave. The pneumatically shock waves are produced by short impulses that are discharged into the bulk grain. Due to the impulse sonic velocity the wave energy is able to move large bulk grain quantity, and to realize the bulk material aeration, too. The paper presents the technical possibility to extend this procedure, with adequate equipment for bulk grain aeration in small or larger farms.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Mihai MIREA

The paper presents experimental modular equipment for nutty fruits harvesting in any orchard size. The main part of the equipment consists in pneumatically shock wave generator that realizes short air shock wave that replaces high velocity wind blast. The described procedure is a non-contact method that determines no damage of the tree trunk/ branches (well-known on tree vibration shaking system). The paper presents the technical possibility to extend this procedure, with an adequate equipment adaptation for nutty fruits harvest in small or larger farms.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Cristina ILIE, Iulian Zoltan BOBOESCU, Diana ANDREI

The paper analyzes the status of the water bodies in ROSCI 0226 site-Semenic Cheile Carasului. The analysis was performed according to the criteria for assessing the status of water bodies specified by Water Framework Directive 2000/60/EC.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Gianina DAMIAN, Simona VARVARA, Roxana BOSTAN

Acid mine drainage (AMD) is a widespread environmental problem associated with both working and abandoned mining operations, because it generates acidic solutions containing toxic heavy metal ions, such as Fe2+, Zn2+, Mn2+, Cu2+, Pb2+, which are not biodegradable and tends to accumulate in living organisms causing various diseases. The present study aimed at evaluating the possibility of using two low-cost sorbents, i.e. zeolite volcanic tuff from Rupea (Brasov County, Romania) and peat from “Poiana Stampei” (Suceava County, Romania) in the removal process of the heavy metals (Fe, Zn and Mn) from AMD generated at the abandoned mining perimeter of “Larga de Sus” from Zlatna (Alba County, Romania). The composition of the acid mine drainage from “Larga de Sus” Mine before and after the treatment with natural sorbents was determined by X-ray fluorescence spectroscopy. The removal efficiency of Fe, Zn and Mn from AMD was determined at different doses and grain sizes of the natural zeolite and peat. The preliminary results showed that both sorbents can be used as a low cost alternative in the treatment of AMD.

[Read full article] [Citation]

Published in Journal of Young Scientist, Vol.I
Written by Robert Cristian SOFRONIE, Constantin ENACHE

The gravity dams are massive constructions, built out of concrete, which counteract the force of water pressure with only action of self-mass. First dam of this type was built around 1220 in Spain, and the building method remained the same until today, the only difference being the building technique and the materials used. The reasons for which the gravity dams need rehabilitation are mainly the time damage and the destructive effects of flash floods and earthquakes effects. Nevertheless, their lifetime can be extended if regular maintenance applied, which most frequently, in the case of cracks presence, it means: waterproofing the fissured areas with epoxy resins, injecting the fissured areas or reinforcing the dam with tension cables in those areas which present horizontal cracks. In the case of Clucereasa’s dam, the deterioration was caused by the extraordinary solicitations of the large quantities of water in transit during the flash floods. This thing leaded to the dilapidation of the dam wall all the way to the armature. These kinds of solicitations, even if they feature a low frequency, have a very important effect upon the built structure. The dam of Clucereasa is a small dam that uses two pumping stations that ensure the water supply for the Dacia-Renault Mioveni car plant and for the city of Mioveni. The dam maintenance was performed over time in acceptable limits and the infiltrations and deformations had remained within reasonable limits, being actually insignificant in case of clogging. For this instance, demolition works of the damaged concrete had been imposed by the usual procedure, followed by the restoration of the wearing concrete at the edge discharge and washing tunnels, reparation with ordinary concrete and the rock-fill embankment of the mobile berm. For the wearing concrete, a type of reinforced disperse concrete was used, having metallic fibers (MFC), obtained by introducing an amount of metallic fibers in the concrete’s composition as being prepared, this way obtaining a much more superior resistance.

[Read full article] [Citation]

  1. CONCRETE SAMPLE PRISM - BENDING RESISTANCE DETERMINATION TEST
  2. THE EFFECT OF THE COLLOIDAL CLAY CONTENT ON THE SWELLING AND PLASTICITY BEHAVIOR
  3. DETERMINATION OF UNIT HYDROGRAPH
  4. STEPS FOR COMPILING THE LAND IMPROVEMENT DESIGNING. CASE STUDY: TECHNICAL DOCUMENTATION FOR OBTAINING THE A.N.I.F. TIMIS AGENCY APPROVAL

Page 5 of 6

Find Article

The publisher is not responsible for the opinions published in the Volume. They represent the authors’ point of view.

© 2019 Journal of Young Scientist. All Rights Reserved.

Powered by INTELIDEV

Journal of Young Scientist