Conference proceedings

Displaying 691 - 700 of 1396

CEST Proceedings are published under the ISSN 2944-9820.

Effect of anthropogenic sources on total particles and Cloud Condensation Nuclei levels in the Eastern Mediterranean

(Corresponding) Bougiatioti A., Zarmpas P., Kalkavouras P., Mihalopoulos N.
Topic: 
Urban environment and health
The absorption and scattering of radiation by atmospheric aerosol particles, especially those originating from anthropogenic activities, is a key component of anthropogenic climate change. Aerosol particles also act as cloud condensation nuclei (CCN) “indirectly” forcing climate through the...Read more
Keywords: 
Cloud Condensation Nuclei, Urban, Remote Background, Anthropogenic Sources, Cloud Droplets
Paper ID: 
cest2019_00266

Greenhouse gases in the urban environment of Athens, trends and sources

(Corresponding) Bougiatioti A., Dimitriou K., Ramonet M., Pierros F., Michalopoulos P., Liakakou E., Solomos S., Quehe P., Delmotte M., Gerasopoulos E., Kanadikou M., Mihalopoulos N.
Topic: 
Climpact: national network for climate change and its impacts
Yearlong greenhouse gases (CO2 and CH4) concentration measurements were performed for the first time in the city of Athens, from 21/12/2018 to 31/12/2019, and analyzed in relation to atmospheric levels, wind direction at a local, regional and long-range transport scale. Clear diurnal and seasonal...Read more
Keywords: 
Greenhouse gases, CPF, PSCF, FlexPart
Paper ID: 
cest2021_00552

The role of hydro-technical works in diminishing flooded areas. Case study: the June 1985 flood on the Miletin River

(Corresponding) Hutanu E., Urzica A., Paveluc L., Stoleriu C., Grozavu A.
Topic: 
Hydrology and water resources
Hydro-technical constructions are very important in diminishing flooded areas and associated damage in the event of a flood. The case study for the Miletin River in the Moldavian Plateau (Eastern Romania) focusses on the historical floods of June 1985. The floods recorded at the Miletin River...Read more
Keywords: 
hydro-technical constructions, flood, HEC-RAS, GIS, Miletin River
Paper ID: 
cest2019_00293

Dam break analysis using Hec-Ras techniques. Case study: Cal Alb dam (NE Romania)

Urzica A., (Corresponding) Hutanu E., Muhu-Pintilie A., Stoleriu C.
Topic: 
Hydrology and water resources
Along with the understanding of the importance of a water resource in the vicinity of a human settlement, human societies have begun to build weirs, dams or hydraulic structures to use more efficiently the natural resource. One of the most important works that can be done in the course of a river...Read more
Keywords: 
flood, HEC-RAS, dam break, NE Romania
Paper ID: 
cest2019_00299

ANALYSIS OF THE 0.1% AND 1% FLOODBANDS RELATING TO THE NV AREA OF THE CEAHLAU MASSIVE, THE CONFLUENCE SECTOR OF THE BISTRIȚA RIVER WITH HIS TRIBUTARY - BISTRICIORA RIVER

(Corresponding) Hutanu E., Linu-Stoilov V., Paveluc L., Stoleriu C., Mihu_Pintilie A., Grozavu A.
Topic: 
Hydrology and water resources
The study aims to outline the flood potential of a mountainous area, in the context of simulating flooded areas, GIS techniques being essential in determining the spatial and probabilistic impact of this type of hydrological phenomena. The resulting modeling highlights the floodplains and the...Read more
Keywords: 
flood, flow, numerical terrain model, SIG, HEC-RAS
Paper ID: 
cest2021_00836

Exceptional flood events in the summer of 2018 in Trebes Negel Reprezentativ bazin (Romania)

(Corresponding) Paveluc L., Grozavu A., Cojoc G., Hutanu E.
Topic: 
Floods, droughts and water scarcity
In the summer of 2018, the general unstable weather throughout the central and eastern parts of Romania has led to significant rainfall, sometimes exceeding 60 mm/day, and consequently to a massive runoff on the slopes that rapidly increased the flow on tributaries and the main course of the river...Read more
Keywords: 
exceptional floods, historical levels, hydraulic calculation, Trebes-Negel Representative Basin
Paper ID: 
cest2019_00308

Analysis of the extreme water phenomenon (hydrological drought) in the small river basins in NE Romania

(Corresponding) PAVELUC L., GROZAVU A., HUTANU E., MIHU-PINTILIE A.
Topic: 
Hydrology and water resources
This paper presents an analysis of one of the climatic dangers experienced in recent times is the high intensity of the drought phenomenon on small rivers in NE Romania that affects society and ecosystems. As a case study, it is intended to identify statistically significant trends in the minimum...Read more
Keywords: 
hydrological drought, small basins, minimum flow, climate change
Paper ID: 
cest2021_00833

Production of PHAs with enhanced properties from sugar-based wastewater in a two stage process

FOUSKAKIS G., STERGIOPOULOU E., ALEXANDROPOULOU M., (Corresponding) ANTONOPOULOU G., NTAIKOU I., LYBERATOS G.
Topic: 
Environmental biotechnology and bioenergy
The experimental design of the study was based on two different microbial processes, i.e. anaerobic fermentation of a sugar-based wastewater via mixed acidogenic cultures and aerobic polymerization of the produced acids and alcohols for poly-hydroxy-alkanoates (PHAs) production, via enriched...Read more
Keywords: 
PHAs, up-flow column reactor, SBR, two stage process
Paper ID: 
cest2019_00281

Hydrothermal pretreatment optimization for enhanced anaerobic digestion of willow sawdust

ALEXANDROPOULOU M., PAPADOPOULOU K., (Corresponding) ANTONOPOULOU G., LYBERATOS G.
Topic: 
Solid waste management
Lignocellulosic biomass including agricultural and forestry residues such as willow sawdust could be used as feedstock for anaerobic digestion (AD). Hydrolysis has been shown to be the rate-limiting step in the case of AD of such substrates. Although being abundant, since the annual world...Read more
Keywords: 
willow sawdust, methane production, hydrotherrmal pretreatment, BMP
Paper ID: 
cest2019_00470

Hydrogen production in a microbial electrolysis cell: the influence of operational parameters

(Corresponding) ANTONOPOULOU G., APOSTOLOPOULOS I., BAMPOS G., BEBELIS S., LYBERATOS G.
Topic: 
Environmental biotechnology and bioenergy
In the present study two identical two-chamber microbial electrolysis cells (MECs), fed with an acetate synthetic medium, were used for hydrogen production, using different anodic materials, i.e. commercial carbon fiber paper (CP) and graphite granules (GG). The effects of the applied voltage (i.e...Read more
Keywords: 
Microbial Electrolysis Cell (MEC), hydrogen, applied voltage, anode
Paper ID: 
cest2021_00256