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11.
The formation of bound residues by naphthalene and its metabolite, cis-naphthalene-1,2-dihydrodiol, in a sediment (1% OC), a silty loam soil (2.9% OC) and a peat (26% OC) was examined. The experiments were carried out under both sterile and nonsterile conditions for up to 35 days. The samples containing bound contaminant were hydrolyzed at an alkaline pH and fractionated using 3,000 and 500 Da molecular weight cutoff ultrafiltration membranes in series. The results for all the geosorbents examined showed that bound residue formation is low for naphthalene and between 5 and 20 times higher for the metabolite. The amount of bound residues released by hydrolysis was higher for the metabolite than for the parent compound for all the samples. The molecular weight distribution of bound radioactivity after hydrolysis showed binding to the high molecular weight components of the sediment organic matter and to the low molecular weight components for soil and peat organic matter when incubated with cis-naphthalene-1,2-dihydrodiol. Experiments performed with naphthalene-UL-(14)C showed larger amounts of bound residue found than in experiments with naphthalene-1-(14)C. 相似文献
12.
Claudio Celentano Federico Prefumo Marco Liberati Armando Tartaro Giuseppina Gallo Giuseppe Lattanzio Sigfried Rotmensch 《黑龙江环境通报》2006,26(11):1075-1077
Septal agenesis is a rare brain malformation that is characterized by partial or complete absence of the septum pellucidum, either isolated or associated with other brain anomalies. We report a case presenting with septal agenesis and normal optic chiasm and pituitary function in a fetus at 19 weeks of gestation. Copyright © 2006 John Wiley & Sons, Ltd. 相似文献
13.
Sílvia Bofill-Mas Byron Calgua Pilar Clemente-Casares Giuseppina La Rosa Marcello Iaconelli Michele Muscillo Saskia Rutjes Ana Maria de Roda Husman Andreas Grunert Ingeburg Gräber Marco Verani Annalaura Carducci Miquel Calvo Peter Wyn-Jones Rosina Girones 《Food and environmental virology》2010,2(2):101-109
The presence of human adenoviruses (HAdV) in recreational water might cause disease in the population upon exposure. HAdV detected by PCR could also serve as indicators of the virological water quality. In order to assess the applicability of HAdV to the evaluation of the faecal contamination in European bathing waters, a real-time quantitative PCR assay was used for the quantification of HAdV in 132 samples collected from 24 different recreational marine and freshwater sites in nine European countries. Selected samples presenting positive nested PCR results for HAdV were analyzed using quantitative PCR and 80 samples from a total of 132 produced quantitative results with mean values of 3.2 × 102 per 100 ml of water, being human adenovirus 41 the most prevalent serotype between the samples where adenovirus was typified. HAdV were quantified in samples from all 15 surveillance laboratories. Statistical analysis showed no homogeneous linear relation between HAdV and E. coli, intestinal enterococci or somatic coliphages concentrations in the tested samples when considering all the data together. Significant correlations between HAdV and at least one of the other indicators were observed only when data from individual laboratories were considered. The quantification of HAdV may provide complementary information in relation to the use of bacterial standards in the control of water quality in bathing water. 相似文献
14.
Conte Marianna Feltracco Matteo Chirizzi Daniela Trabucco Sara Dinoi Adelaide Gregoris Elena Barbaro Elena La Bella Gianfranco Ciccarese Giuseppina Belosi Franco La Salandra Giovanna Gambaro Andrea Contini Daniele 《Environmental science and pollution research international》2022,29(10):13905-13916
Environmental Science and Pollution Research - COVID-19 pandemic raised a debate regarding the role of airborne transmission. Information regarding virus-laden aerosol concentrations is still... 相似文献
15.
Fustinoni S Campo L Satta G Campagna M Ibba A Tocco MG Atzeri S Avataneo G Flore C Meloni M Bertazzi PA Cocco P 《Environment international》2012,39(1):2-7
Background
We monitored urinary benzene excretion to examine factors affecting benzene uptake in a sample of the general population living near a petrochemical plant.Methods
Our study population included 143 subjects: 33 petrochemical plant workers (W) with low level occupational benzene exposure; 30 residents in a small town 2 km from the plant (2kmR); 26 residents in a second small town located 2 to 4 km from the plant (4kmR); and 54 urban residents 25 km from the plant (25kmR). Exposure to benzene was evaluated by personal air sampling during one work-shift for the W group, and from 8.00 to 20:00 for general population subgroups, and by urinary benzene (BEN-U).Results
Median airborne benzene exposure was 25, 9, 7 and 6 μg/m3 benzene among the W, 2kmR, 4kmR, and 25kmR subgroups, respectively; the highest level was found among the workers, while there was no significant difference among the other groups. Median BEN-U was 2 to 14-fold higher in smokers compared to non-smokers; among non-smokers BEN-U was the highest in W (median 236 ng/L), and lower in the 2kmR (48 ng/L) and 4kmR (63 ng/L) subgroups than in the 25kmR (120 ng/L) subgroup. A multiple linear regression analysis, explaining up to 73% of BEN-U variability, confirmed that active smoking and airborne benzene most strongly affected BEN-U. Among the non-smoking, non-occupationally exposed study subjects, a positive association was found between BEN-U and the distance of residence from the plant. This association was explained by increased exposure to urban traffic emissions in the study group residing at a greater distance from the plant. Environmental tobacco smoke had a marginally positive role.Conclusion
Among factors affecting benzene uptake in non-occupationally exposed individuals, urban residence contributes to benzene exposure more than residing in close proximity to a petrochemical plant. 相似文献16.
Motta Oriana Pironti Concetta Moccia Giuseppina De Caro Franceso 《Environmental science and pollution research international》2021,28(16):19537-19538
Environmental Science and Pollution Research - 相似文献
17.
M. Muscillo M. Fratini R. Graffeo M. Sanguinetti V. Martella K. Y. Green S. Della Libera Giuseppina La Rosa 《Food and environmental virology》2013,5(4):194-202
Noroviruses (NoVs) are important human pathogens associated with foodborne and waterborne gastroenteritis. These viruses are genetically highly heterogeneous, with more than forty genotypes within three genogroups (GI, GII, and GIV) identified in humans. However, the vast majority of human infections are associated with variants of a unique genotype, GII.4. Aside from these NoV strains of epidemiological relevance, NoV strains of genogroup GIV (Alphatron-like) are reported in a sporadic fashion and their overall prevalence in the community is unknown and this likely reflects the lack of specific diagnostic tools. We analyzed raw sewages collected from 32 wastewater treatment plants distributed throughout Italy (307 samples) and stool specimens collected from hospitalized patients with clinical signs of diarrhea of unknown etiology (285 samples). By using specific qualitative and quantitative RT-PCR assays, 21.8 % of the sewage samples and 3.2 % of the stool specimens tested positive for GIV NoVs. The number of genome copies in fecal samples ranged from 5.08 × 104 to 1.73× 106/g of feces. Sequence analysis showed limited genetic variability in human GIV viruses. The presence of GIV NoV both in sewage and in clinical samples confirms that not only GI and GII NoVs but also GIV strains are circulating in humans. Monitoring of GIV NoV is recommended in order to understand the dynamics of circulation in human populations, environmental contamination, and potential health risks. 相似文献
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19.
Food Community Networks as Leverage for Social Embeddedness 总被引:1,自引:0,他引:1
Giuseppina Migliore Giorgio Schifani Giovanni Dara Guccione Luigi Cembalo 《Journal of Agricultural and Environmental Ethics》2014,27(4):549-567
Social embeddedness, defined as the interaction of economic activities and social behavior, is used in this study as a conceptual tool to describe the growing phenomenon of food community networks (FCNs). The aim in this paper was to map the system of relations which the FCNs develop both inside and outside the network and, from the number of relations, it was inferred the influence of each FCN upon the formation of new socially embedded economic realities. A particular form of FCN was taken under consideration: solidarity purchase groups (SPGs). Performed with the aid of social network analysis on a sample of SPGs in Sicily (a region in southern Italy), the study allowed us to identify a relational (internal) social embeddedness, in which groups of consumers and farmers are directly influenced by reciprocal interactions, giving rise to more or less numerous links of reciprocity and trust depending on the number of interactions. It was also identified a structural (external) social embeddedness, generated by the nature of relations that the SPGs undertake with the various social actors. From the results of our analysis it emerges that SPGs lie at the intersection of many social realities, influencing them and in turn being influenced by such realities. We highlight the major role played by consumer and environmental associations in affecting the phenomenon of social embeddedness. 相似文献
20.
Maurizio Pettine Silvio Capri Maria Giuseppina Farrace Maura Manganelli Luisa Patrolecco Alberto Puddu 《Chemistry and Ecology》2013,29(1-2):13-25
The results obtained in the four seasonal cruises planned in the PRISMA II project are reported. These concern dissolved and colloidal organic carbon, free amino acids and total dissolved carbohydrates and heterotrophic activity. Main factors controlling organic matter degradation, resulting from laboratory tests not planned in the above project, are also discussed. Dissolved organic matter shows seasonal accumulation, which may be markedly different from year to year, and large contributions by colloidal and saccharide components. Heterotrophic activities play an important role in the carbon cycle, although laboratory runs highlight limitations caused by aging of organic matter and phosphorus deficiency. 相似文献