排序方式: 共有13条查询结果,搜索用时 0 毫秒
1.
Fadoua Hamzaoui-Azaza Mouna Ketata Rachida Bouhlila Moncef Gueddari Luis Riberio 《Environmental monitoring and assessment》2011,174(1-4):283-298
Zeuss?CKoutine aquifer, located in southeastern Tunisia, has been used intensively as a primary source to meet the growing needs of the various sectors. Detailed knowledge of the geochemical evolution of groundwater and water quality can enhance understanding of the hydrochemical system, promoting sustainable development and effective management of groundwater resources. To this end, a hydrochemical and statistical investigation was conducted. Groundwater samples have been collected from 13 wells from 1995 to 2005; to understand the sources of dissolved ions and assess the chemical quality of the groundwater. Results demonstrate that among the cations, only the mean concentrations of Na?+? exceed guideline values set by the World Health Organization (WHO). Regarding the analyzed anions, the concentration of SO $_{4}^{2-}$ and Cl??? are above the WHO allowable concentrations. Total dissolved solids in most groundwater samples are greater than 1,000 mg l???1, the limit set by the WHO, indicating slightly saline or moderately saline water. In general, a significant increase in the degree of water mineralization was observed in the direction of southwest to northeast following the regional flow direction. Calculated saturation indices show that all water samples were oversaturated with respect to aragonite, calcite, and dolomite, and undersaturated with respect to anhydrite, gypsum, and halite. Based on hydrochemical facies, two types of water predominate in the study area. The first is Ca?CNa?CSO4?CCl in type and located in the southwest which corresponds to the recharge part of the aquifer. The second type is Na?CCa?CCl?CSO4 and located in the east, which corresponds to the discharge part. 相似文献
2.
Mouna Hassine-Zaafrane Khira Sdiri-Loulizi Jérôme Kaplon Imen Ben Salem Pierre Pothier Mahjoub Aouni Katia Ambert-Balay 《Food and environmental virology》2014,6(2):125-131
Noroviruses (NoVs) are responsible for numerous cases of waterborne and foodborne gastroenteritis every year. They are released in the sewage and their detection in this environment can reflect the epidemiology of the viral strains circulating in the community. A three-year (2007–2010) survey was conducted in order to evaluate the presence of human NoVs using RT-PCR in 518 sewage samples collected at the entrance and exit of two biological sewage treatment plants located in Monastir region, Tunisia. In this study, we aimed to genetically characterize the most prevalent GI and GII NoV strains, in order to obtain a rough estimate of the efficacy of disinfection treatments and to compare the results with clinical data documented in the same area during the same period. This work confirms the wide circulation and the genetic diversity of NoVs in Tunisia and the widespread distribution of NoV variants in both raw and treated wastewater. Indeed, NoV was detected in 192 (37.1 %) sewage samples, among them mixed infections with group A rotavirus were detected in 125 (65.1 %) cases. The genotypes of the GI NoVs were GI.1, GI.2, GI.4, GI.5, and GI of unassigned genotype (GI.UA), and the genotypes of the GII NoVs were all GII.12. This study enhances the currently poor environmental virological data gathered in Tunisia, demonstrates the benefit of environmental surveillance as a tool to determine the epidemiology of NoVs circulating in a given community, and underlines the need for the design and support of similar long-term studies in our country, in order to compensate for the absence of a national surveillance system for gastroenteric viruses. 相似文献
3.
Jabeur Fadoua Mechri Sondes Mensi Fethi Gharbi Ines Naser Yosri Ben Kriaa Mouna Bejaoui Nejla Bachouche Samir Badis Abdelmalek Annane Rachid Djellali Mostapha Sadok Saloua Jaouadi Bassem 《Environmental science and pollution research international》2022,29(24):36023-36039
Environmental Science and Pollution Research - The diversity of marine biomasses is a set of exploitable and renewable resources with application in several sectors. In this context, a co-culture... 相似文献
4.
5.
6.
Behavior of As,Cd, Co,Cr, Cu,Pb, Ni,and Zn at the soil/plant interface around an uncontrolled landfill (Casablanca,Morocco) 下载免费PDF全文
Sofia Fait Said Fakhi Mohammed ElMzibri Omar Ait Malek Bouchra Rachdi Zineb Faiz Hassan Fougrach Wadia Badri Abdelaziz Smouni Mouna Fahr 《补救:环境净化治理成本、技术与工艺杂志》2018,28(4):65-72
The present work undertaken in the environmental context aims to study the distribution of heavy metals in plants that grow naturally around uncontrolled landfills. The study's goal was to identify plants that can be used to remediate contaminated soils. For this purpose, 14 plants species and their rhizospheric soil samples were collected and analyzed for arsenic, cadmium, cobalt, chromium, copper, lead, nickel, and zinc by inductively coupled plasma‐atomic emission spectrometry. The results showed the presence of elevated metal concentrations in soil, many exceeding the regulatory values, and that many species exhibited an ability to accumulate multiple metals in their shoots and roots without sustaining toxicity. This was confirmed by bioconcentration and translocation factors generally higher than 1. 相似文献
7.
Ben Hlima Hajer Karray Aida Dammak Mouna Elleuch Fatma Michaud Philippe Fendri Imen Abdelkafi Slim 《Environmental science and pollution research international》2021,28(37):51046-51059
Environmental Science and Pollution Research - Amylases are enzymes required for starch degradation and are naturally produced by many microorganisms. These enzymes are used in several fields such... 相似文献
8.
Mariem Chaâbane Nejla Soudani Khawla Benjeddou Mouna Turki Fatma Ayadi Makni Tahia Boudawara 《毒物与环境化学》2015,97(9):1253-1264
The protective effect of Nitraria retusa fruit extract against hepatotoxicity induced by penconazole at a dose of 67 mg/kg body weight given intraperitoneally every two days to male Wistar rats was investigated. Penconazole exposure increased malondialdehyde, hydrogen peroxide, and advanced oxidation protein product levels. Hepatic biomarkers as well as enzymatic (catalase, superoxide dismutase and glutathione peroxidase) and nonenzymatic (vitamin C, non-protein thiols and metallothioneins) antioxidant status were also altered. Treatment with N. retusa extract improved all parameters cited above. Liver histological studies confirmed the biochemical parameters. These results provide a scientific basis for the use of N. retusa fruit against hepatotoxicity. 相似文献
9.
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
10.
Lobna Daoud Houda Hmani Manel Ben Ali Mouna Jlidi Mamdouh Ben Ali 《Journal of Polymers and the Environment》2018,26(1):23-32
Over a hundred of halophilic/halotolerant microorganisms were screened for alkaline protease production. The bacterium showing the highest enzyme production was characterized and identified as Bacillus halodurans US193 on the basis of 16S rRNA gene analysis. It was alkalophilic, thermophilic and halotolerant since it grew optimally at pH 9.7 and 50?°C with tolerance of up to 125 g NaCl l?1. The alkaline protease was purified 4.9 times with about 40186.1 U/mg as specific activity. It exhibited optimal activity at pH 10, 70?°C and 0.25 M NaCl with perfect stability at wide ranges of pH (6–12), temperatures (30–60?°C) and NaCl concentrations (0–2 M). The serine alkaline protease maintained high stability in the presence of Cu2+, Mg2+, Ba2+ and Ca2+ ions, various organic solvents [50% (v/v)] and ionic and non ionic detergent additives. In addition, it was more compatible with various commercialized detergents than other reported detergent proteases, and was very efficient in blood stain removal. These findings let B. halodurans US193 alkaline protease be an ideal candidate for many industrial processes at harsh conditions, especially as a bio-additive in detergent industry. 相似文献