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211.
Commercially known Ahmer oxide paints are prepared from raw material mainly composed of red iron oxides (hematite) and iron oxyhydroxides. The raw material used in manufacturing of Ahmer oxide comes from some localities in southwest Sinai such as Abu Thor, Allouga, and El lehian. The adsorption of uranium and other radioelements on iron oxides could make the raw material (red iron oxides) and their products environmentally hazardous. The studied samples were subjected to radiometric analysis using NaI (Tl) gamma-ray spectrometer. The average activity concentration of U, Th, Ra, and K are 108.7, 458.8, 88.8, and 627.5?Bq?kg?1, respectively in raw material and 136.4, 14.6, 58.3, and 95.9?Bq?kg?1 in Ahmer oxide. High values of activity concentrations of 238U, 226Ra, and 40K were recorded in Allouga and El lehian raw material. High radioactivities of Allouga and El lehian raw material are mainly attributed to the presence of torbernite, zircon, and monazite, in addition to adsorbed elemental uranium in Ahmer oxide. absorbed dose rate (D), annual effective dose equivalent, radium equivalent activity (Raeq), external hazard index (Hex), and internal hazard index (Hin), as well as representative gamma index (Iγ) were determined from the activity concentrations of 226Ra, 232Th, and 40K. Some of the studied samples do not satisfy the universal standards. 相似文献
212.
Hałaj Elżbieta Pająk Leszek Papiernik Bartosz 《Environmental geochemistry and health》2022,44(7):2253-2279
Environmental Geochemistry and Health - The aquifer thermal energy storage (ATES) has gained attention in several countries as an installation for increasing the energy efficiency of geothermal... 相似文献
213.
Soulard Christophe-Toussaint Valette Elodie Perrin Coline Abrantes Patricia Catarina Anthopoulou Theodosia Benjaballah Ouassila Bouchemal Salah Dugué Patrick Amrani Mohamed El Lardon Sylvie Marraccini Elisa Mousselin Guilhem Napoleone Claude Paoli Jean-Christophe 《Regional Environmental Change》2018,18(3):651-662
Regional Environmental Change - To address sustainability challenges of agro-ecosystems located in Mediterranean urban regions, this paper focuses on the multidisciplinary subject of urban... 相似文献
214.
Koubaa Fatma Ghorbel Chaâbane Mariem Turki Mouna Ayadi Fatma Makni El Feki Abdelfattah 《Environmental science and pollution research international》2021,28(9):11001-11015
Environmental Science and Pollution Research - The present study was designed to evaluate the protective effects of Salvia officinalis essential oil (SOEO) against vanadium-induced hepatotoxicity... 相似文献
215.
Oliveira Lara A. P. El Dib Regina Figueiredo Drielle B. S. Braz Leandro G. Braz Mariana G. 《Environmental science and pollution research international》2021,28(9):10436-10449
Environmental Science and Pollution Research - Occupational exposure to inhalational anesthetics has been associated with health problems, including reproductive issues. Considering the scarcity... 相似文献
216.
Le Conte Y Bécard JM Costagliola G de Vaublanc G El Maâtaoui M Crauser D Plettner E Slessor KN 《Die Naturwissenschaften》2006,93(5):237-241
A brood pheromone identified in honeybee larvae has primer and releaser pheromone effects on adult bees. Using gas chromatography–mass spectrometry (GC–MS) to evaluate fatty acid esters—the pheromonal compounds—in different parts of the larvae, we have localized the source of the esters as the larval salivary glands. A histochemical study describes the glands and confirms the presence of lipids in the glands. Epithelial cells of the gland likely secrete the fatty acids into the lumen of the gland. These results demonstrate the salivary glands to be a reservoir of esters, components of brood pheromone, in honeybee larvae. 相似文献
217.
Kaotar Nayme Abouddihaj Barguigua Brahim Bouchrif Bouchra Karraouan Fatima El Otmani Naima Elmdaghri 《Journal of environmental science and health. Part. B》2017,52(2):107-114
This study was conducted to assess the retail food as a possible vehicle for antimicrobial resistant, particularly quinolones resistant and pathogenic Escherichia coli. We determined the prevalence and characteristics of nalidixic acid (Nal) resistant E. coli isolates from diverse retail food samples. In all, 70 (28%) of 250 E. coli isolates studied were Nal-resistant E. coli and 91% of these were multi-drug resistant. Plasmid mediated quinolone resistance genes were identified in 32 isolates, including aac(6′)-Ib-cr (n = 16), qnrS1 (n = 11) and qnrB19 (n = 7). Mutations in gyr A and par C genes were detected among 80% of the isolates, and the isolates showed substitution Ser83-Leu and Asp87-Asn in gyrA and Ser80-Ile in parC. In addition, three different gene cassettes were identified (aadA1, aadA7, aac(3)-Id) in 18%. Virulence-associated genes stx1, eae, sfa, hlyA and stx2 were found in six (8%), three (4%), two (3%), three (4%) and three (4%) isolates, respectively. E. coli isolates of phylogenetic group A were dominant (64%, 45/70). Pulsed field gel electrophoresis revealed none epidemiological relationship between these isolates. The results of this work report the higher frequency of Nal-resistant E. coli isolates from Moroccan retail food samples including MDR and pathogenic isolates. 相似文献
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