Search results for "sahara"
showing 10 items of 125 documents
Comment concilier efficacité et équité dans les systèmes éducatifs des pays en développement?
2005
05006
Do Saharan Dust Days Carry a Risk of Hospitalization From Respiratory Diseases for Citizens of the Canary Islands (Spain)?
2021
Background: Saharan dust meets the Canary Islands at the beginning of its westward path across the North Atlantic, exceeding the European daily levels for PM10; for this reason, their two provincial capital cities, constitute optimal sites where to evaluate the health effects of this natural event. Objectives: To assess the short-term association between Saharan Dust Days (SDDs) and respiratory morbidity in the two capital cities. Methods: We carried out a time-series analysis with daily emergency hospital admissions due to all respiratory system diseases, chronic obstructive pulmonary disease (COPD) and asthma between 2001 and 2005, assessing the independent effect of SDDs, defined accordi…
CHEMICAL COMPOSITION OF ATMOSPHERIC BULK DEPOSITION AT THE INDUSTRIAL AREA OF GELA (SICILY, ITALY)
2014
Bulk deposition has been collected at six sampling sites in area of Gela plain (Italy) in the period from February 2008 to May 2009. Samples collected each two weeks were analysed for the major ion and trace elements content. Preliminary results allow identifying three different sources that control the abundance of the elements in atmospheric deposition: (1) sea spray, (2)geogenic dust, and (3) anthropogenic pollution. Due to the closeness of the coast, clear evidence of sea spray input is detectable for most of the samples. The high excess of non sea-salt sulphate(50 - 90% of the total) is prevailingly ascribable to the abundant SO2 emissions of the refinery.The pH values of the collected…
La povertà rurale in Africa Sub-sahariana: il caso del Dipartimento della Lekie in Camerun
2021
Questo articolo mette in rilievo le caratteristiche della povertà rurale in Africa sub-sahariana in generale, e nel Dipartimento della Lekie in Camerun in particolare. Il suo interesse sta nel fatto che per meglio combattere la povertà, bisogna innanzitutto capire la sua vera natura e le sue particolari caratteristiche sul territorio d’intervento. Questo studio mira dunque a offrire alla comunità scientifica nonché a vari portatori d’interesse un quadro di riferimento per la definizione di politiche economiche efficaci contro la povertà sul territorio del Dipartimento della Lekie. L’indagine svolta sul cosiddetto territorio ha rilevato, tramite un’analisi descrittiva, che le popolazioni del…
Developing Lower secondary education: a rural issue and challenge for sub-saharan Africa
2010
The ongoing progresses of coverage of primary education in Sub-Saharan African Countries are inevitably to impact lower secondary education in a significant manner. Beyond the need for all countries to identify a global policy to deal with the problem, it is important to understand that expansion of coverage of lower secondary education will concern rural populations since coverage is generally already relatively high in cities while it is lagging noticeably in rural settings; many schools will need to be built and operate in a near future. A basic characteristic of rural schools is that most of them enroll only a limited number of students and, in current circumstances tend to cost signifi…
Contribution in the 5th Annual ECOSOC AMR E-Discussion on Education: Closing the Gap
2011
En ligne sur www.un.org/en/ecosoc/newfunct/pdf/2011_amr_phase_2_final_digest.pdf; Contribution in the 5th Annual ECOSOC AMR E-Discussion on Education: Closing the Gap; The author focuses on access to education in the countries of sub-saharan africa
2018
Abstract. During the summertime, dust from the Sahara can be efficiently transported westwards within the Saharan air layer (SAL). This can lead to high aerosol loadings being observed above a relatively clean marine boundary layer (MBL) in the tropical Atlantic Ocean. These dust layers can impart significant radiative effects through strong visible and IR light absorption and scattering, and can also have indirect impacts by altering cloud properties. The processing of the dust aerosol can result in changes in both direct and indirect radiative effects, leading to significant uncertainty in climate prediction in this region. During August 2015, measurements of aerosol and cloud properties …
2018
Abstract. Mineral dust is an important component of the climate system, affecting the radiation balance, cloud properties, biogeochemical cycles, regional circulation and precipitation, as well as having negative effects on aviation, solar energy generation and human health. Dust size and composition has an impact on all these processes. However, changes in dust size distribution and composition during transport, particularly for coarse particles, are poorly understood and poorly represented in climate models. Here we present new in situ airborne observations of dust in the Saharan Air Layer (SAL) and the marine boundary layer (MBL) at the beginning of its transatlantic transport pathway, f…
Identidad transterritorial en la literatura saharaui: La luz de cuatro velas en el Sáhara de Ali Salem Iselmu
2022
The study focuses on the analysis of Ali Salem Iselmu's collection of short stories, La luz de cuatro velas en el Sáhara, as an expression, within Saharawi Literature, of a peculiar identity paradigm, which is based on the transterritorial experience of the author and its characters. The book is made up of four parts, four 'chronotopes', according to a journey from the past to the vision of the future. It is about the four candles that are lit to the beat of the stories that the grandfather/teacher Sidati, one night inside the tent in the camp, decides to start narrating to his granddaughter Marta, to clarify his constant doubts about his name and the two languages she speaks. The constitut…
Identidad transterritorial en la literatura saharawi: La luz de cuatro velas en el Sáhara de Ali Salem Inselmu
2022
The study focuses on the analysis of Ali Salem Iselmu’s collection of short stories, La luz de cuatro velas en el Sáhara, as an expression, within Saharawi Literature, of a peculiar identity paradigm, which is based on the transterritorial experience of the author and its characters. The book is made up of four parts, four ‘chronotopes’, according to a journey from the past to the vision of the future. The constitution in Madrid, on July 9, 2005, of the Generación de la Amistad, by a whole generation of journalists, poets, writers with roots in Western Sahara, a former Spanish colony, with a biography of a migrant and with the determination of writing a literature in Spanish with traces of …