Browsing by Author "NECIB, A"

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Estimation de l’allergie pollinique dans la ville de Annaba (Algérie)
(2020-05-28) NECIB, A; BOUGHEDIR, L; AIDAOUISARI, G.
The aim of this work is to realize a clinical investigation, during two years, to improve the knowledge on the prevalence of allergies in general and, pollinosis in particular, in the region of Annaba (Northeast of Algeria). The clinical results of the analysis of the pollen allergen frequency of the 230 patients, show that Cypress pollen sensitization occupies the first position (29,26%), followed by the pollen of Olivier and Cereals with an equal percentage (24.39%). Pestnut pollen has 19.51% and grass pollen with 17.07%. © 2021 Revue Algérienne d’allergologie et d’immunologie médicale. All rights reserved.
INDIVIDUAL AND COMBINED EFFECTS OF A FUNGICIDE (VALETTE) AND AN HERBICIDE (OSCAR) ON THE GROWTH AND MORTALITY OF EARTHWORM LUMBRICUS TERRESTERIS (LINNAEUS, 1758
(2023-03-08) BERROUK, H; NECIB, A; MERAIAHIA, A; BOUMAZA, N.E; HMAIDIA, K.
Earthworms are valuable soil invertebrate mainly used to monitor environmental quality. Thus, the present study was undertaken to provide insights on the individual and combined toxicological effects of two commonly used pesticides in Souk Ahras city (Northeast Algeria), namely Valette (fungicide) and Oscar (herbicide) on a soil invertebrate – earthworm (Lumbricus terresteris) as a bio-indicator of soil pollution. The invertebrates were subjected to increasing concentrations of each chemical (0, 2, 4, 6, 8, 12.5, 25 and 50 mg/500 mg soil) for four treatment periods (24, 48, 72 and 96 hours). Physicochemical analysis revealed that the soil pH is alkaline, and water and KCl pH are respectively 8.05 and 7.72, in addition to a sandy-loamy soil texture with a saturation rate of 49.43%, and high level of organic matter (11%). Additionally, both chemicals caused a significant weight decrease (p˂0.05) from the concentration of 12.5 mg/mg soil, and noteworthy, no mortality was recorded during the entire experimental period, either for the individual or combined exposure. Furthermore, the histopathological observations showed no signs of alteration or damage to epidermal cells and muscle fibers during the treatment periods with either chemical
THE ALLERGENIC POLLEN IN THE ATMOSPHERE OF EL-HADJAR CITY (ANNABA, ALGERIA
(2018-12-17) NECIB, A; BOUGHEDIRI, L.
Abstract. The aeropalynogical study of the atmosphere of El-Hadjar town was carried out during one year, from June 1, 2012 to May 31, 2013. The collected pollen during the sampling period yielded 2729 pollen grains/cm2 belonging to 50 taxa, distributed on 20 families (Apiaceae, Arecaceae, Asteraceae, Boraginaceae, Brassicaceae, Caryophyllaceae, Chenopodiaceae/Amaranthaceae, Cupressaceae, Cyperaceae, Ericaceae, Fabaceae, Lamiaceae, Mimosaceae, Pinaceae, Poaceae, Rosaceae, Scrophulariaceae, Ulmaceae, Urticaceae and Vitaceae.); 24 genera (Alnus, Artemisia, Betula, Borago, Carya, Casuarina, Echium, Ephedra, Eucalyptus, Fraxinus, Juglans, Juncus, Ligustrum, Mercurialis, Melia, Pistacia, Plantago, Platanus, Populus, Quercus, Rumex, Salix, Tilia and Trifolium.) and, 6 species (Castanea sativa, Corylus avellana, Olea europaea, Quercus ilex, Ricinus communis and Typha angustifolia). The pollen peak concentration was recorded in April with 715 GP/cm2 and the minimum value in October with 36.08 GP/cm2. The pollen spectrum has a percentage of 52.31% of pollen tree. The Cupressaceae family contributed with 12.84%, Olea europaea with 6.95%, Eucalyptus and Casuarina with 5.85 and 5.71%. The highest percentage of this type of pollen occurs in November with 90.51%, dominated by Casuarina pollen with 86.31%. The highest concentrations of tree taxa are: Eucalyptus (35.03%) and Ligustrum (16.21%) in June. Fraxinus with 64.64% in December, Ericaceae 17.42% in March; Olea europaea and Quercus in April with 18.86% and 6.79% respectively. The pollens of the herbs present 44.89%. They are characterized by the major presence of Poaceae and Mercurialis pollen with the following percentages: 21.49% and 11.75%. It seems that the months of July (86.33%) and August (80.14%) mark the highest percentages of non-tree pollen.