http://hdl.handle.net/20.500.14044/39985 2026-08-13T20:57:59Z 2026-08-13T20:57:59Z Bousba, H. Benabbas, C. Zouak, Z. Marmi, R. Chabour, N. Chellat, S. http://hdl.handle.net/20.500.14044/40072 2026-08-13T11:13:06Z 2021-01-01T00:00:00Z

Instability of the slopes linked to a neo-tectonic activity, Mahouna, North-East, Algeria Bousba, H.; Benabbas, C.; Zouak, Z.; Marmi, R.; Chabour, N.; Chellat, S. Bayoumi Hamuda, Prof. Dr. Hosam The Mahouna region located in northeastern Algeria, in a margin considered active; it constitutes a fragmented landscape, extremely varied, with a very complex substratum characterised by a tectonic heritage of several geological units. The sedimentary soil dates from the Permo-Triassic to the Plio-Quaternary. It is distinguished by a structural relief, young, active, due to its geodynamic evolution during the Upper Tertiary (convergence of the Africa- Eurasia plates). The instability of the slopes by the size and extent of the affected masses constitutes a serious threat and pose problems of development of this region. It is recommended on the one hand to discern the different revealers of recent tectonics; and on the other hand, the highlighting of the relationship between neo-tectonic activity and disorder whose main purpose is to improve the geological balance of a region that remains very little explored from the morpho-structural point of view. The multi-source mapping and analysis through the GIS, the deciphering of a mosaic of aerial photos, coupled with the field study, give us new results and show that the construction and the genesis of this relief is closely linked to the neo- tectonic activity, whose activation is confirmed by the disorder, dismemberment and quite significant deformation that affect both ancient and recent geological formations and the morphology of the region.

2021-01-01T00:00:00Z Stojilkovic, Doris Bayoumi Hamuda, Hosam E.A.F. http://hdl.handle.net/20.500.14044/40071 2026-08-13T11:12:04Z 2021-01-01T00:00:00Z

Air quality and distribution of Lichens as biomonitors in some Serbian territories Stojilkovic, Doris; Bayoumi Hamuda, Hosam E.A.F. Bayoumi Hamuda, Prof. Dr. Hosam This paper deals with using lichens as a bioindicators of the air quality. A bioindication and physical- chemical detection of air pollution in Zrenjanin has not been carried out. Over recent decades, air quality has become environmental problem worldwide due to industrial activities and road traffic. Atmospheric monitoring has been necessary to control air quality and reduce pollution sources. Air quality is a topic that attracts more and more attention especially with the problem of human health. Biomonitoring is based on the detection and monitoring of changes that occur on different levels of the biological organization for living organisms under the influence of air pollutants. It was noted that not all lichen species are equally likely to indicate different levels of air pollution. The assessment of lichen biodiversity was based on the calculation of lichenic abundance indices. This research work deals with using lichens as a bioindicators of the air quality and it was conducted from various Serbia locations. Also, it is shown the relationship between the Serbian air qualities, and how lichens act as a bioindicator for the air quality, in some parts of Serbia such as in Sremska Mitrovica city, Fruska Gora mountine, Palic Lake and Silver Lake. The bioanalysis of the samples from investigated sites indicates the presence of different lichen taxa, which shows that these sites are rich in lichen species. Information about the air quality index of Zrenjanin city as an example of the Serbian cities which demonstrates the chemical pollutants, climate changes for example weather, wind and temperature This work also shows the distribution of the lichens which can be found in the investigated sites. The presence of lichen indicates that the air quality in these sites: Sremska Mitrovica city, Fruska Gora mountine, Palic Lake and Silver Lake is quite good. It was concluded that the presence of epiphytic lichens plays an important role in determining the air pollution in those sites. By the presence of these lichens, we have found that the most dominant lichen taxa were Rhizocarpon geographicum, Lecanora muralis, Lecanora muralis, Rhizocarpon geographicum, Xanthoria parietina and Xanthoria candelaria.

2021-01-01T00:00:00Z Zsarnóczai, Sándor J. Medveczky, Balázs http://hdl.handle.net/20.500.14044/40070 2026-08-13T11:10:27Z 2021-01-01T00:00:00Z

Water management in selected EU member states in 2010s Zsarnóczai, Sándor J.; Medveczky, Balázs Bayoumi Hamuda, Prof. Dr. Hosam Study overviews main issues for agricultural water-use and wastewater conditions in Czechia, Hungary, Romania, Slovakia, Bulgaria, Slovenia, Portugal, Spain in 1998 -2017. Analysis can provide possibility to compare water management and water cleaning avoiding wastewater in countries. Water management connects with irrigation mostly on permanent cultivated agricultural areas. Analysis focuses on agricultural value added contributing to GDP growth, share of agricultural GVA produced by irrigated agriculture, total renewable water resources per capita, produced municipal wastewater, the agricultural water withdrawal as % of total renewable water resources mainly on total agricultural water managed area concerning qualified level of cultivated lands. Motivation/Background: Aim of analyses is to clear some correlations of several economic variables mentioned as features of selected countries. Global warming and longer drought period in EU-28 need for more successful water management to balance scarcity of water. Method: Study compares water management feature of Spain and Portugal with some EU member states in Central – East European based on SPSS statistical analyse. Conclusions: Innovation prosperity should be developed by more educated and skilled human power resources in agricultural production. Share of production based on irrigated land by cleaning water should increase in total agricultural value added.

2021-01-01T00:00:00Z Bayoumi Hamuda, Hosam E.A.F. http://hdl.handle.net/20.500.14044/40059 2026-08-13T11:09:27Z 2021-01-01T00:00:00Z

Climatic changes and natural disasters affecting the global environment Bayoumi Hamuda, Hosam E.A.F. Bayoumi Hamuda, Prof. Dr. Hosam Today, there is near universal consensus among the world’s professions that human activity is causing climate change. The Intergovernmental Panel on Climate Change (IPCC) cautions that global greenhouse gas emissions should be cut in half by 2030 and reach net zero emissions by mid-century in order to avert the most catastrophic consequences climate change. Climate change in combination with other factors is putting at least one million plant and animal species at risk of extinction around the world. Changes in the global climate exacerbate climate hazards and amplify the risk of extreme weather disasters. Increases of air and water temperatures lead to rising sea levels, supercharged storms and higher wind speeds, more intense and prolonged droughts and wildfire seasons, heavier precipitation and flooding. The evidence is overwhelming and the results devastating: The number of climate-related disasters has tripled in the last 30 years. Between 2006 and 2016, the rate of global sea-level rise was 2.5 times faster than it was for almost all of the 20th century. More than 20 million people a year are forced from their homes by climate change. The United Nations Environment Program estimates that adapting to climate change and coping with damages will cost developing countries $140-300 billion per year by 2030. Extreme weather disasters affect all countries, rich and poor. But as we face a future with enhanced risks, it is critical to face the reality of those who bear the burden of our changing climate. For Oxfam, this is an issue of justice: those living in poverty are the hardest hit by climate change despite being the least responsible for the crisis. Climate change is forcing people from their homes, bringing poverty on top of poverty and increasing hunger. People in poorer countries are at least four times more likely to be displaced by extreme weather than people in rich countries. The world faces a race against time to reduce emissions and help the most vulnerable cope with climate impacts that are already being faced today and will escalate in the years ahead. It’s time to act now.

2021-01-01T00:00:00Z