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161.
Sylwia Kamińska Żaneta Kruszewska Elżbieta Lejbrandt Małgorzata Sadkowska-Todys 《Food and environmental virology》2014,6(4):276-281
Efficient foodborne outbreak investigations are important for identification of gaps in food safety and public health practice. This article reports on an investigation of a gastroenteritis outbreak linked to catering food following a Christmas reception at the National Institute of Public Health-National Institute of Hygiene (NIPH-NIH) in Warsaw in December 2012. Of 192 employees eating food at the catering event, 97 (50.5 %) developed symptoms. Persons eating dishes with recipes containing frozen carrots were five times more likely to develop gastrointestinal symptoms compared to those who did not eat carrots. Laboratory analysis identified norovirus in stool samples taken from symptomatic persons. Leftover food was not available for testing. The investigators did not collect stool specimens from food handlers and did not conduct trace backs for the suspected food ingredients. This investigation underlines the need for a revision of an existing procedures and importance of their complementation with detailed instructions for the local public health authorities for effective completion of foodborne outbreaks investigations in Poland. 相似文献
162.
Mohammad Shahi Ibrahim El Saliby Andrew McDonagh Leonard D. Tijing Jong-Ho Kim Ho Kyong Shon 《环境科学学报(英文版)》2014,26(11):2348-2354
Potassium titanate nanostructures were synthesised by hydrothermal treatment of TiO2 (P25) in KOH and H2O2. As-produced powders were characterised by scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, and nitrogen adsorption-desorption methods. Longitudinally-oriented-wire-like structures with a length up to several micrometres and diameters ranging from 10 to 30 nm were obtained. Larger size fibrous nanowires resulting from the hydrotherrnal treatment showed high affinity in adsorbing crystal violet (CV), which was mainly due to their high surface area. The photocatalytic bleaching of CV solution revealed that the wires are photoactive under ultraviolet light irradiation. Macroporous nanowires are considered as effective adsorbents of CV, capable of photocatalvtic degradation, and they can be easily separated from the solution by settling. 相似文献
163.
T.B.M.J. Ouarda S. El‐Adlouni 《Journal of the American Water Resources Association》2011,47(3):496-505
Ouarda, T.B.M.J. and S. El‐Adlouni, 2011. Bayesian Nonstationary Frequency Analysis of Hydrological Variables. Journal of the American Water Resources Association (JAWRA) 47(3):496‐505. DOI: 10.1111/j.1752‐1688.2011.00544.x Abstract: The present paper provides a discussion of nonstationary frequency analysis models in hydrology with a focus on the Bayesian approach. The Bayesian model provides an efficient estimation framework of hydrological quantiles in the presence of nonstationarity. In nonstationary frequency analysis models, the parameters are functions of covariates, allowing for dependent parameters and trends. The use of the nonstationary Generalized Maximum Likelihood Estimation method in hydrologic frequency analysis is discussed. This model allows using prior information concerning the variables under study and considering a number of models (linear, quadratic, etc.) of the dependence of the parameters on covariates. A discussion is also provided concerning the use of the reversible jump Monte Carlo Markov Chain procedure which allows carrying out the estimation of the posterior distributions of the parameters and the selection of the Bayesian model at the same time. An application to a case study is presented to illustrate the potential of the model. 相似文献
164.
Rafat M. Amin F. A. Khalil M. A. K. El Fayoumi 《Environmental monitoring and assessment》2011,173(1-4):29-35
Measurements of natural radioactivity in drinking water have been performed in many parts of the world, mostly for assessment of the doses and risk resulting from consuming water. A study of the radionuclide and chemical components in groundwater from Beni Suef Governate, Egypt has been carried out. Fifty water samples were analyzed by gamma ray spectroscopy to determine the 226Ra, 232Th, and 40K concentrations; major elements, pH, alkalinity, and conductivity were also measured. The specific activity values ranged from 0.008 to 0.040 Bq/l for 226Ra, from 0.003 to 0.019 Bq/l for 232Th, and from 0.025 to 0.344 Bq/l for 40K. The annual ingestions of these radionuclides, using local consumption rates (average over the whole population) of 1.5 l day???1, were estimated to be 8.59, 4.86, and 83.47 Bq year???1 for 226Ra, 232Th, and 40K, respectively. The estimated values and weighted means of these radionuclides compare well with the world average. The estimated effective doses from drinking water were found to be 2.4 ??Sv year???1 (226Ra), 1.1 ??Sv year???1 (232Th), and 0.51 ??Sv year???1 (40K). Contribution of these radionuclides to the committed effective dose from 1 year consumption of drinking water is estimated to be only 4%. 相似文献
165.
Sami Abidli Youssef Lahbib Najoua Trigui El Menif 《Environmental monitoring and assessment》2011,177(1-4):375-384
The imposex incidence and butyltin concentration i.e. tributyltin with its di- and mono-substituted metabolites were investigated in the muricid Bolinus brandaris sampled from two sites on the northern Tunisian coast (the Lagoon of Bizerta and the small Gulf of Tunis). Both populations had imposex, with stages of imposex development varying between VDS 1 and VDS 4.3. All imposex indices (imposex frequency (I %), female penis length, female vas deferens length, vas deferens sequence index, relative penis length index, and vas deferens length index) were significantly higher in snails from the Bizerta lagoon. Butyltins were detected in the whole tissues of both sexes from the two sites. TBT levels were higher in gastropods collected from the lagoon of Bizerta (12.65 ±1.48 ng Sn g???1 dw in female and 15.21 ±1.13 ng Sn g???1 dw in male) than in individuals from the Gulf of Tunis (10.71 ±1.26 ng Sn g???1 dw in female and 11.65 ±1.63 ng Sn g???1 dw in male), corroborating the data of imposex analysis. These results confirmed that B. brandaris could be used as a bioindicator species of butyltin pollution in the studied areas. In addition, this study provided baseline data that could serve for long-term monitoring of TBT pollution in Tunisia, since legislation to reduce the use of TBT-based antifouling paints has not been introduced yet. 相似文献
166.
Taha Mona M. Shahy Eman M. Mahdy-Abdallah Heba Ibrahim Khadiga S. El Tahlawy Eman M. 《Environmental science and pollution research international》2021,28(2):1619-1626
Environmental Science and Pollution Research - Cadmium (Cd) as nephrotoxicant metal exerts its potent effect mainly on renal tubules disturbing its functions. A cross-sectional study was conducted... 相似文献
167.
Elfadadny Ahmed El-Husseiny Hussein M. Abugomaa Amira Ragab Rokaia F. Mady Eman A. Aboubakr Mohamed Samir Haney Mandour Ahmed S. El-Mleeh Amany El-Far Ali H. Abd El-Aziz Ayman H. Elbadawy Mohamed 《Environmental science and pollution research international》2021,28(36):49447-49466
Environmental Science and Pollution Research - Cancer, a major public health problem, is one of the world’s top leading causes of death. Common treatments for cancer include cytotoxic... 相似文献
168.
Bastida-Molina Paula Hurtado-Pérez Elías Pérez-Navarro Ángel Alfonso-Solar David 《Environmental science and pollution research international》2021,28(15):18790-18806
Environmental Science and Pollution Research - The alarming increase in the average temperature of the planet due to the massive emission of greenhouse gases has stimulated the introduction of... 相似文献
169.
170.
Toan Nguyen Solveig Heide Lucie Guilbaud Stéphanie Valence Saskia Vande Perre Eléonore Blondiaux Boris Keren Geneviève Quenum-Miraillet Jean-Marie Jouannic Laurent Mandelbrot Olivier Picone Agnès Guet Vassilis Tsatsaris Mathieu Milh Nadine Girard Marie Vincent Mathilde Nizon Céline Poirsier Alexandre Vivanti Alexandra Benachi Vincent des Portes Laurent Guibaud Olivier Patat Myrtille Spentchian Lisa Frugère Delphine Héron Catherine Garel 《黑龙江环境通报》2023,43(6):746-755