ISSN 2285-6064, ISSN CD-ROM 2285-6072, ISSN-L 2285-6064, Online ISSN 2393-5138
 

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Gabriela BIALI, Paula COJOCARU

The study was performed on a catchment area of approx. 150 ha, mainly for agricultural use, with steep slopes, with intense erosion and associated processes. The arrangement proposal was made after establishing the erosion risk, the degrees of intensity and the spatial distribution of this process. In order to determine the average annual soil loss and then the alluvial influx, the U.O.R. (Homogeneous Relief Units) procedure was chosen: for each U.O.R. the ROMSEM equation was applied successively, adapted for our country by acad. M. Moţoc. In this approach, the GIS technique was used by using Geo-Graph software, by creating spatial bases and processing by overlay technique (7 information layers were created). The attribute database was created taking into account all the factors involved in the erosion process, the parameters characterizing the climate, the relief, the soil, the land use, the technologies of agricultural exploitation, etc. The main purpose of the paper is to demonstrate that the complex action of monitoring and management of lands affected by various degradation processes can only be done correctly within a Geographic Information System - GIS.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Evgeniy ZAVOROTIN, Alla GORDOPOLOVA, Nataliya TIURINA

A stable institution that ensures coordination of communication between authorities, sellers, and buyers, was designed within the developed method supporting demand for agricultural-purpose land, taking into account the provisions of the system approach. On the example of Saratov region (oblast) of the Russian Federation, the failures of the current land market were determined and taken into account when specifying the objectives, functions, activities, new norms, rules. The block model of the Institution supporting demand for agricultural-purpose land includes the central area of focus, functional purpose, regulatory activities, and expected results. The Institution is aimed at creating the attractiveness of agricultural-purpose land as a commodity, scientific justification of effective agricultural-purpose land use programs. The functions of the Institution supporting demand for agricultural-purpose land are to attract buyers among agricultural producers, to disseminate information on offers and enforcement of concluded contracts. The presented algorithm describes the process of interaction of subjects in land relations with state authorities through the introduced Institution supporting demand for agricultural-purpose land, buyers. The proposed institutional structure will be an effective alternative to a set of disparate initiatives and actions.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Cristinel CONSTANDACHE, Ciprian TUDOR, Radu VLAD, Lucian DINCĂ, Laurenţiu POPOVICI

The surface of degraded agricultural lands continues to increase under the influence of climatic changes. Pines have been the most frequent forest species used for afforestation in the past (period 1950-1990). The present paper presents data regarding the current state, biometric and auxologic characteristics of pine stands which emphasize the bioproductive and ecologic potential. The productivity and production were analyzed in the pine stands formed by main species such as European black pine and Scots pine, pure or mixed. The wood production (m3ha-1) recorded in pine stands is different, being based on the degradation form, phytoclimatic layer and age. As such, the volume of stands with European black pine varies between 258.89 and 512.66 m3ha-1, while for the stands with Scots pine, the values varies between 206.75 and 418.04 m3ha-1. For both species, it was obtained an semnificative correlation coefficient (R2 > 0.8) between diameter class (D) and unit volume (v). In the forest steppe of hill (Ss), on strongly fragmented landslides, the European black pine has proved better growth than Scots pine. In the hill zone (FD3), similar growth conditions for both species were obtained.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Mariana Mirela STOICAN (PRISECARU)

The constructive solution of a rotating volumetric pump with two profiled rotors is presented; each rotor is provided with two triangular-shaped rotating pistons. The calculation relation of the driving power of the volumetric pump is established and the graph P=f (nr) is drawn. Subsequently, the pump is placed in an “in situ” hydraulic network and the pump load and the water transport distance are specified; linear and local pressure losses are calculated, resulting in total pressure loss. The driving power of the pump is determined and V = f (nr) and P=f (nr) is plotted.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Ivan ZAHARIEV, Dimitar KEHAYOV

There are considered three options for harvesting from the field of plant biomass from Rosa damascene Mill after picking the flowers. To limit of Agrilus damage to plantations, the cut biomass must be taken out of the massifs. In order to avoid its rot in the form of energy chips, it is necessary that it has reached an air-dry state before the "shredding" operation. The influence of the field area and its distance from the place for storage of energy chips on the efficiency of the used equipment was observed. Depending on the location and size of the planted areas, it is appropriate to apply one of the considered options.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Bianca-Stefania ZABAVA, Gheorghe VOICU, Paula TUDOR, Mariana FERDES, Gabriel-Alexandru CONSTANTIN

Our paper presents the results of experimental determinations, in the laboratory, on stationary settling columns, in which the process of sedimentation of solid particles from a liquid-solid mixture prepared for this purpose could be followed. Mixtures of distilled water with different concentrations of CaCO3 (2, 4, 6, 8 and 10%) were introduced in the 5 columns of the Armfield apparatus. In bottles of determined volume were prepared solutions from the same liquid-solid mixture, but with fixed concentrations, respectively, of 6, 4, 2, 1, 0.5 mg/mL. These bottles were used as a standard for checking the turbidity of the liquid in the stationary columns in areas of 10 cm on the 940 mm height of the column, for 100 min. The distribution of turbidity of the liquid, in height, in the different zones of the experimental column, was verified with several mathematical functions. The obtained results validated our predictions regarding the variation of the turbidity on the column height according to a power distribution law, and the obtained graphs presented high values of the correlation coefficient. They can be useful for decanter designers and wastewater treatment specialists.

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Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. X
Written by Maria POPA, Ioana GLEVITZKY, Dorin POPA, Mirel GLEVITZKY

In this paper, we approached the two dimensions of water quality assessments. The qualitative dimension which involves the analyses of the physicochemical and microbiological parameters of “Roua Apusenilor” spring water and the application of both HACCP principles and Ishikawa Diagrams as risk analysis steps. The paper highlights the high-quality groundwater parameters of “Roua Apusenilor” spring water according to the European legislation. The hazard analysis was used for risk assessment and for the identification of different types of hazards in a spring water bottling process. To identify the causes that may lead to a potential risk, the Cause and Effect Diagram was used, based on the analysis of the 5M. The paper presents this in detail for the bottling process stage. The main emphasis was put on the quantification of risk assessment by determining the Risk Class (RC) per identified processing hazard. Also, corrective actions were undertaken. For the bottling stage, critical control points have been identified in the Cause and Effect Diagram, based also on the analysis of the 5M. The two methods, HACCP in conjunction with Cause and Effect Diagrams, display enhanced effects on a larger scale when they are used in combination.

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