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. XIV
Written by Maxim ARSENI, Adrian ROȘU, Nina-Nicoleta LAZĂR, Mădălina CĂLMUC, Mihail VESTE, Cătălina ITICESCU

The sediment movement on a river plays a crucial role in safe navigation and economic activities on navigable channels. Environmental changes in time are given by the morphological characteristics of the riverbed during seasonal water variation on the Danube River. This study presents a comprehensive assessment of the Danube River's velocity and current characteristics based on Acoustic Doppler Current Profiler measurements. The correlation between flow velocities and depths helps to understand the factors that influence sediment patterns and provides insights into the sustainable management of the river system. The study was conducted along a 71-kilometer length of the Sulina Branch from the Danube River, where ADCP measurements were collected at multiple locations and over periods. The data collected included water depth, flow velocity, and current direction. By clustering the column depth cell velocities it revealed significant spatial and temporal variations in the velocity and current patterns, influenced by factors such as river morphology, discharge, and seasonal changes.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Anelia POPOVA, Zhulieta ARNAUDOVA

The successful cultivation of vines must be aware of the phenological phases during the growing season. However, conventional phenological measurements on the ground are limited due to their spatial coverage. The use of Sentinel-2 imagery has led to an increased interest in its application to viticulture, with the data providing access to global spatial coverage and the potential for high temporal resolution. The present study was conducted during the period 2021-2022 in the experimental vineyard of the Agricultural University of Plovdiv, with the aim of studying the phenological phases of the wine grape varieties Merlot, Mavrud and Chardonnay. The results will enhance the interpretation of the spatiotemporal dynamics between meteorological data, vegetation indices (Normalized Difference Vegetation Index Normalized Difference Vegetation Index - NDVI), and phenological stages in vine cultivation. This study highlights the effectiveness of remote sensing for monitoring vineyard phenology, both retrospectively and in real time, as a valuable tool for maintaining high-quality standards in precision viticulture.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Valentina Andreea CĂLMUC, Mădălina CĂLMUC, Carmen CHITESCU, Silvia DRĂGAN, Cătălina ITICESCU, Puiu-Lucian GEORGESCU

The Somova-Parcheș Aquatic Complex is part of the Danube Delta Biosphere Reserve and hosts a wide variety of fauna and flora species of community importance. This complex is fed with a significant volume of water from the Danube River, thus influencing the quality of the lake ecosystems. For this reason, the present study aims to investigate the presence of certain classes of pharmaceutical residues in water sampled from 6 lakes, namely Somova, Parcheș, Morun, Potica, Babele, Câșla, as well as their ability to accumulate in the tissues of fish collected from the same study area. Extraction of pharmaceutical compounds was performed using the solid phase extraction method for water samples and the QuEChERS method for fish tissues. Results obtained from analyses using high-performance liquid chromatography coupled with high-resolution mass spectrometry revealed the presence of the pharmaceutical compound caffeine in most water samples and its tendency to accumulate in some fish organs, such as the gills.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Gabriel MURARIU, Sorin FRASINA, Adrian ROȘU, Corneliu DOROFTEI, Iulian RACOVIȚĂ, Bogdan ROȘU, Fetecău CĂTĂLIN, Mirela VOICULESCU, Cătălin NEGOIȚĂ

Nitrogen dioxide is found in the atmosphere as a key ingredient in the photochemical formation of smog and acid rain, nitrogen dioxide is a poisonous gas that is formed during combustion. Toxic at high concentrations, it reacts with moisture in the air to form nitric acid, which is highly corrosive and dangerous to plants and animals. In this study, we present a predictive model for nitrogen dioxide concentrations measured between 2017 and 2024 at ground level in a national network of monitoring stations. The model is based on a statistical approach to measurements from 152 automatic measurement points, with an hourly resolution. The analysis carried out allowed the construction of a mathematical model in order to make an effective prediction. The algorithms used were of the Recursive least squares filter type. The application used was made possible by running a dedicated software in PyCharm. It was found that the model for daytime concentrations depends linearly on a series of parameters monitored by the national network.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Nikolina ILIEVA, Diana KIRIN

The study presents the first data on the accumulation circulation of Al, Ba and Cd in the samples of skin, muscles and liver of the European perch (Perca fluviatilis Linnaeus, 1758), its dominant parasite species Eustrongylides excises Jägerskiöld, 1909 larvae, water and sediments from the freshwater ecosystem of the anthropogenically affected protected area Mandra-Poda, Black Sea Basin, Bulgaria. The potential of European perch and E. Excises for bioaccumulation towards the studied elements has been studied. The bioindicator significance of P. fluviatilis and E. Excises for assessing the pollution of the freshwater ecosystem with Al, Ba, and Cd has been revealed. The risk to human health and living organisms has been evaluated. Measures for the protection of the ecosystem have been indicated.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Elemer-Emanuel SUBA, Tudor SALAGEAN, Ioana Delia POP, Florica MATEI, Silvia CHIOREAN, Mircea-Emil NAP, Paul SESTRAS, Simion BRUMA, Catalin-Stefanel SABOU, Vlad PAUNESCU, Valentin-Sebastian DAN, Ferencz VAKAR

This study analyses the physiological response and visual quality of several grass varieties grown on four experimental lots, using multispectral imaging for monitoring. The control lot did not receive irrigation, while the other three experimental lots were subjected to distinct irrigation regimes: rotors (lot 1), sprays (lot 2), and underground drip irrigation (lot 3). Multispectral data allowed the assessment of vegetative parameters, to analyse the differences in vegetative state and water stress levels between the lots and grass varieties. The results showed significant variations between the experimental lots, depending on both the type of irrigation and the grass variety, highlighting the efficiency of different irrigation systems in both water conservation and maintaining an optimal vegetative state. The study offers valuable insights for optimizing irrigation practices and selecting grass varieties suited to both specific site conditions and the implementation of sustainable maintenance strategies.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Silvia Alexandra DREGHICI, Levente DIMEN, Mircea RÎȘTEIU, Tudor BORȘAN, Florin FAUR

Monitoring landfill stability is critical in mining operations to prevent failures that could have significant environmental and safety implications. Site characterization is a comprehensive approach to monitoring landfill stability in order to conduct detailed geological assessments to understand the composition, structure, and physical properties of the tailing material, to perform laboratory tests to assess the engineering properties, all these correlated with geodetic repeated measurements. Techniques and instruments used in geodetic monitoring are chosen depending on the type of surveyed displacement and level of accuracy required. Photogrammetric and remote sensing technologies play an essential role in the detection and monitoring displacements and deformations, providing crucial support in the rapid and effective management of these emergencies. These techniques allow for large-scale, continuous monitoring of slope movements without requiring direct contact with the slope. This way, it ensures precise deformation monitoring, validates theoretical models, enhances predictive capabilities, and supports safety, regulatory compliance, and environmental protection efforts. A well-designed monitoring system not only ensures compliance with environmental regulations but also provides valuable insights for designing effective mitigation and rehabilitation strategies.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Andreea Catalina POPA, Teodora UNGUREANU, Claudiu-Sorin DRAGOMIR, Antonio-Valentin TACHE

Romania faces challenges related to climate change, such as rising temperatures, floods, and droughts, while urban areas struggle with air and water pollution. The growing public awareness of sustainability and environmental protection creates a favorable context for the large-scale implementation of such infrastructure across the country. This research provides a detailed classification of green and blue infrastructure types, highlighting their diversity and the specific functions each fulfills in improving urban life. Green and blue areas are essential for improving urban life quality and protecting the environment. The growing significance of green and blue infrastructure is reflected in Romania’s urban laws and policies, highlighting a shift towards sustainable development and city resilience. However, implementing this is difficult due to the lack of a single legal definition, causing inconsistent use and confusion. Additionally, there is no cohesive national strategy, and legal frameworks addressing different aspects are uncoordinated. Local authorities also need clearer guidelines and better methods for planning, designing, and managing these infrastructures effectively.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Elena-Mihaela STAN, Horațiu POPA, Daniel MANOLI

The numerical modelling of the cylindrical shafts can be done using finite element method in axisymmetric or three-dimensional conditions. For this study, the 3D finite element method has been used to analysed the cylindrical shaft’s behaviour regarding the earth pressure distribution, the vertical displacements of the soil and the horizontal displacements of the diaphragm wall. Thus, a parametric study has been carried out in which the cylindrical shafts radius, the length of the diaphragm wall and the excavation depth have been varied. For all the numerical models, the cohesive and cohesionless soil has been used. The results show the influence of all these parameters on the retaining walls’ behaviour. Also, the influence of the soil type is explained.

[Read full article] [Citation]

Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Ana Bianca PAVEL, Irina CATIANIS, Laura DUTU, Gabriel IORDACHE, Catalina GAVRILA

The Danube Delta’s ecosystems, encompassing riverine branches, lakes, and wetlands, face ecological pressures driven by natural and anthropogenic factors. This study evaluates the physico-chemical characteristics of surface water samples collected in September and October 2024 from 25 locations in the Gorgova-Uzlina Depression and 32 sites near the Izmail and Sf. Gheorghe confluences. Measurements were performed in situ using the EXO2 multiparameter probe (YSI, USA), which recorded parameters including temperature, pH, dissolved oxygen, chlorophyll "a," turbidity, electrical conductivity, and oxidation-reduction potential. Results indicate that most water samples fall within Class I and II of the Romanian water quality classification (Order 161/2006), reflecting good ecological status. Local variations in dissolved oxygen, turbidity, and chlorophyll "a" suggest potential ecological vulnerabilities, particularly in areas with elevated sediment loads. Conductivity and salinity values confirm the freshwater nature of the investigated sites. The findings highlight the importance of continuous monitoring to assess seasonal and anthropogenic influences on water quality and maintain the ecological integrity of the Danube Delta’s aquatic ecosystems.

[Read full article] [Citation]

Page 9 of 14

Find Article

Useful Links
Faculty Of Land Reclamation And Environment Engineering Bucharest 


University of Agronomic Sciences and Veterinary Medicine of Bucharest


Agriculture for Life International Conference

 

Other publications of University of Agronomic Sciences and Veterinary Medicine of Bucharest

 

More links here

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

© 2019 SCIENTIFIC PAPERS LAND RECLAMATION, EARTH OBSERVATION & SURVEYING, ENVIRONMENTAL ENGINEERING. All Rights Reserved. To be cited: SCIENTIFIC PAPERS LAND RECLAMATION, EARTH OBSERVATION & SURVEYING, ENVIRONMENTAL ENGINEERING.

Powered by INTELIDEV

Land reclamation Journal