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1.
Wafa Feki-Sahnoun Asma Hamza Mabrouka Mahfoudi Ahmed Rebai Malika Bel Hassen 《Environmental science and pollution research international》2014,21(19):11481-11499
Microphytoplankton data along the southern Tunisian coasts have been monitored weekly since 1995. This study used the data collected during the period 2000–2007 to determine the temporal variability patterns and to characterize the geographical structures of microphytoplankton populations. The methodological approach consisted in isolating the temporal variability common to all sampled sites and in analyzing the “residual” site-specific component. Multivariate ordination methods were used to determine the seasonal and interannual variability. The temporal pattern shared by all sites was highlighted and the seasonal cycle of the most frequent phytoplankton communities contrasted the diatoms winter-spring species to the dinoflagellates summer-fall species. Multitable comparison allowed the identification of three areas exhibiting similar phytoplankton population variability. The results, despite the coastal location of sampling sites, indicated that hydrodynamic and geomorphologic properties of the different areas as well as anthropogenic activities play a key role in the structure of the phytoplankton communities. 相似文献
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Kharroubi A Gargouri D Baati H Azri C 《Environmental monitoring and assessment》2012,184(6):4001-4014
Concentrations of selected heavy metals (Cd, Pb, Zn, Cu, Mn, and Fe) in surface sediments from 66 sites in both northern and
eastern Mediterranean Sea–Boughrara lagoon exchange areas (southeastern Tunisia) were studied in order to understand current
metal contamination due to the urbanization and economic development of nearby several coastal regions of the Gulf of Gabès.
Multiple approaches were applied for the sediment quality assessment. These approaches were based on GIS coupled with chemometric
methods (enrichment factors, geoaccumulation index, principal component analysis, and cluster analysis). Enrichment factors
and principal component analysis revealed two distinct groups of metals. The first group corresponded to Fe and Mn derived
from natural sources, and the second group contained Cd, Pb, Zn, and Cu originated from man-made sources. For these latter
metals, cluster analysis showed two distinct distributions in the selected areas. They were attributed to temporal and spatial
variations of contaminant sources input. The geoaccumulation index (I
geo) values explained that only Cd, Pb, and Cu can be considered as moderate to extreme pollutants in the studied sediments. 相似文献
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Rouibah Ikram Hassen Wafa Sallem Ons Fekih Khellaf Nabila Hassen Abdennaceur Mansour Hedi Ben 《Environmental science and pollution research international》2021,28(12):14530-14545
Environmental Science and Pollution Research - Medicines and drugs consumption by all populations of the world can be expected to result in the contamination of the environment since 30–90%... 相似文献
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Rajeh Caroline Saoud Imad P. Kharroubi Samer Naalbandian Salpy Abiad Mohamad G. 《Journal of Material Cycles and Waste Management》2021,23(1):1-17
Journal of Material Cycles and Waste Management - While society struggles to meet increasing food demand and mitigate food security challenges, approximately one-third of the food produced globally... 相似文献
6.
Tayeb Wafa Koubaa Nadia Nakbi Amel Chaieb Ikbal Tayeb Insaf Kassab Asma 《Journal of environmental science and health. Part. B》2013,48(12):1058-1069
In this study, a cohort of farmers from the Mateur region in the North of Tunisia, were interviewed and examined for the biochemical effects of pesticides. We studied their haematological profile, lipid parameters, serum markers of nephrotoxicity and hepatotoxicity. We also evaluated the activities of Butyrylcholinesterase (BChE), Acetylcholinesterase (AChE) and thiolactonase-paroxonase (PON). Moreover, lipid peroxidation and activities of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT) were determined. The duration of pesticide use and the farmers’ age were considered in the analysis. Our results revealed significant differences in some haematological parameters, in liver and kidney functions, in the lipidic status of the pesticide-exposed group. We also reported an increase in the index of incidence of cardiovascular risk in farmer populations. A significant decrease in AChE, BChE and PON levels was found among farmers. Lipid peroxidation, however, increased. The activities of SOD and CAT were remarkably elevated in farmer populations. There was a significant relation between changes in biological markers, the duration of pesticide use and the farmers’ age. This study indicates that a long-term exposure to pesticides may play an important role in the development of vascular diseases via metabolic disorders of lipoproteins, lipid peroxidation and oxidative stress, inhibition of BChE and decrease in thiolactonase-PON levels. 相似文献
7.
Garnier Céline Guiga Wafa Lameloise Marie-Laure Degrand Laure Fargues Claire 《Environmental science and pollution research international》2020,27(34):42685-42703
Environmental Science and Pollution Research - The food industry consumes large amounts of clean, potable water and in turn generates a significant amount of wastewater. In order to minimize water... 相似文献
8.
Fatma Krichen Wafa Karaoud Nadhem Sayari Assaâd Sila Fatma Kallel Semia Ellouz-Chaabouni Ali Bougatef 《Journal of Polymers and the Environment》2016,24(2):166-175
Sulfated polysaccharides were isolated from two Tunisian fish skins grey triggerfish (Balistes capriscus) (GTSP) and smooth hound (Mustelus mustelus) (SHSP). Their chemical and physical characteristics were investigated. The Analysis of surface morphology by scanning electron microscopy of both sulfated polysaccharides displayed the same shape with netted structure. The antioxidant activities of GTSP and SHSP were evaluated using various in vitro antioxidant assays: 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity, reducing power, β-carotene bleaching inhibition assay (IC50 GTSP = 0.5 mg mL?1 and IC50 SHSP = 0.6 mg mL?1) and DNA nicking assay. Both sulfated polysaccharides exhibited good antioxidant activities. The sulfated polysaccharides showed strong angiotensin I-converting enzyme inhibitory activities (IC50 GTSP = 0.16 mg mL?1 and IC50 SHSP = 0.18 mg mL?1). These results revealed that GTSP and SHSP exhibited significant antihypertensive activities. Overall, the results indicated that grey triggerfish and smooth hound skins can be used to generate high value-added products, thus offering a valuable source of bioactive sulfated polysaccharides for application in wide range of biotechnological applications. 相似文献
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Brahim Chekima Sohaib Chekima Syed Azizi Wafa Syed Khalid Wafa Oswald @ Aisat Igau Stephen Laison Sondoh Jr. 《国际发展与全球生态学杂志》2016,23(2):210-220
As a result of human lifestyles and unsustainable consumption patterns, the environment continues to deteriorate and thus inhibit sustainable development. In order to curb this situation and promote a sustainable economy, one of the solution is to reduce conventional products consumption and shift to green products. Over the past 20 years, marketing managers keenly seek to understand the green market; however, inadequate information on how to promote consumers’ green behavioral intentions is slowing the growth of green markets and becomes a barrier for firms when developing segments and communicating strategies for effective promotion of green products in countries like Malaysia where the trend is fairly new. Therefore, this study attempts to examine the impact of environmental knowledge, cultural values, and environmental advertising and determine the moderating effect of income level, education level, and gender on consumers’ green purchase intentions. A survey was administered, and a total of 405 valid questionnaires were obtained. Structural equation modeling technique was used to evaluate the causal model by using SmartPLS 2.0 software. The finding results suggest that cultural values and environmental advertising are the main influences in building green purchase intentions, while environmental knowledge is not significantly related. The results also indicate that education level and gender have a significant positive moderation effect while income did not. This suggests that green purchase intentions’ motivational factors are greater among highly educated individuals, with females in particular. The discussions and implications of these findings are further elaborated. 相似文献