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Wyświetlanie 1-2 z 2
Tytuł:
To what extent is air freight affected by the Corona virus pandemic?
Autorzy:
Bouali, Soufyane
Douha, Selma
Khadri, Nadjib
Powiązania:
https://bibliotekanauki.pl/articles/2141117.pdf
Data publikacji:
2020
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
Air Cargo
COVID-19
crisis
Transport
Opis:
Purpose of the paper aims to find out the impact of the COVID-19 pandemic on the global air transport sector (passenger transport, air freight) during the first three months of 2020, and after analyzing the status of the global air transport market from January to March 2020, the study found that the CORONA pandemic has significantly affected this vital sector, where airlines suffered significant losses due to the cancellation of many flights and travel suspensions, in addition to the laying off of much employment and Some of them went bankrupt, while the volume of air freight decreased after global supply chains were shut down as a result of the closure of factories and limited only to the transportation of medical equipment and food supplies in some countries, and the repercussions of this pandemic are expected to be severe on the global economy in the coming years.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2020, 5, 2; 98-108
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Groundwater Pollution Vulnerability, Hazard and Risk in a Semi-Arid Region
Autorzy:
Haied, Nadjib
Khadri, Samira
Foufou, Atif
Azlaoui, Mohamed
Chaab, Salah
Bougherira, Nabil
Powiązania:
https://bibliotekanauki.pl/articles/2027767.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Mio-plio-quaternary aquifer
Djelfa syncline
DRASTIC
WQI
GIS
pollution risk
Opis:
The Mio-plio-quaternary aquifer of the Djelfa Syncline is part of a region in Algeria which is characterized by the lack of surface water resources and located in a semi-arid climate. Since alluvial aquifers, and among them our aquifer, are the most vulnerable because of thier direct exposure to the pollution caused by the infiltrated pollutants, this work focused on the assessement of groundwater pollution vulnerability, hazard and risk. Thus, several methods were used; for this purpose, such as the DRASTIC and WQI methods mapped using a GIS. The results obtained clearly show a low to moderate vulnerability. The DRASTIC model and its validation based on the correlation with WQI revealed a low correlation ($WQ_I$vs $D_I$ : 0.221). Since the vulnerability model does not match with the groundwater quality, pollution risk was assessed by combining vulnerabilty and hazard (i.e, water quality). The risk map illustrated three levels ranging from low to high risk. This map should be helpful in decision making and groundwater management through avoiding high risk areas.
Źródło:
Journal of Ecological Engineering; 2021, 22, 10; 1-13
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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