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701.
210Po and 210Pb activity concentrations in fish from the Slovenian part of Adriatic Sea, in the vicinity of a former uranium mine at ?irovski vrh and from the Slovenian market were determined. In addition, 210Po and 210Pb activity concentrations in squid from the Slovenian market and in mussels from the Slovenian part of the Adriatic Sea were also determined. Fish, squid and mussel consumption in Slovenia was assessed from the data available from Eurostat and Food and Agriculture Organisation (FAO) and the data used for the corresponding dose calculation. Fish species with the highest activity concentrations were grilled to assess possible loss of 210Po during the food preparation process. Samples were freeze dried and radiochemical separation of 210Po and 210Pb was performed. Measurements of 210Po were performed by alpha spectrometry and 210Pb by a low background gas-flow proportional counter. 210Po activity concentrations in fish, squid and mussels were from 0.039 to 35.0 Bq kg−1 fresh weight and 210Pb activity concentrations were from 0.08 to 3.03 Bq kg−1 fresh weight. Grilling of fish resulted in no significant loss of 210Po at 90 °C. The assessed combined annual effective ingestion dose due to 210Po and 210Pb for fish, squid and mussels consumed in Slovenia is 47.6 μSv year−1. 相似文献
702.
Mamindy-Pajany Y Hamer B Roméo M Géret F Galgani F Durmiši E Hurel C Marmier N 《Chemosphere》2011,82(3):362-369
This work investigates the ecotoxicological evaluation of contaminated dredged sediments from French Mediterranean navy harbour (A), commercial port (B) and two composite specimens (C) and (D) coming from the mixture of A and B with other port sediments. The toxicity of elutriates from these sediments is estimated using embryo-toxicity test, Microtox® solid phase test, LuminoTox, phytotoxicity tests and genotoxicity test. Bioassay responses are not clearly correlated with chemical contamination in the whole sediment and vary as a function of tested organisms. The highest contaminated samples (A and C) are almost always more toxic than the less contaminated samples (B and D). Among composite sediments, the mixture effect with other sediments is not efficient to decrease toxicity in sample C, suggesting that other parameters influence toxicity level such as particle size or organic matter content. These parameters should be taken into consideration in order to improve the efficiency of the mixture process and produce composite sediments with low toxicity. 相似文献
703.
Sven D. Jelaska Toni Nikolić Lucija Šerić Jelaska Vladimir Kušan Hrvoje Peternel Goran Gužvica Zoran Major 《Environmental management》2010,45(3):616-625
Here we present the methodology used for terrestrial biodiversity analysis and site selection in Phase B of the UNDP/GEF COAST
project. The analysis was focused on the problem of biodiversity evaluation in four Croatian counties stretching from sea
level to the highest mountain in Croatia. Data on habitats, vascular flora, and fauna (mammals, birds, reptiles, amphibians,
butterflies, ground beetles, and underground invertebrates) were collected and analyzed for each of the four counties. Emphasis
was given to the richness of endangered species and the rarity of endemic species. Based on the spatial analyses of habitat,
fauna, and flora data, four to six areas were selected from each county and ranked according to their biodiversity importance.
Overlap between areas important for richness and those important for rarity was highest for data on flora (65.5%) and lowest
for data on fauna (16.7%). When different data sets were compared, the lowest overlap was between flora and fauna (17.1%)
and largest between fauna and habitats (23.9%). Simultaneous overlap among all three data sets was found in just 6.5% of the
overall selected areas. These results suggest that less specific data, with respect to taxa threat status, could better serve
as surrogate data in estimating overall biodiversity. In summary, this analysis has demonstrated that Dalmatia is a region
with a high overall biodiversity that is important in a broader European context. 相似文献
704.
705.
Josef Hrnčiřík Jiří Pšeja Jan Kupec Světlana Bernkopfová 《Journal of Polymers and the Environment》2010,18(2):98-103
This work focused on anaerobic biodegradation of blends composed of glycerol-plasticized polyvinyl alcohol (PVA) and biopolymer
(starch, gellan, xanthan) in an aqueous environment, after inoculation with digested activated sludge from a municipal wastewater
treatment plant. Glycerol degradability is comparable to degradability of used modifying agents. Modifying agents added in
the 20–40 wt% range proportionally increased biodegradation degree (Dt) calculated from balance of transformed carbon in the system. Biodegradation degree of polysaccharides and glycerol attained
95% and over. For PVA it was only 6.5% (in breakdown times up to 500 h). Content of polysaccharides favorably affects biodegradation
degree of polyvinyl alcohol blends, but at the expense of reduced mechanical properties of resultant products. 相似文献
706.
707.
708.
研究公众自然灾害知觉中的不安全因素,有助于开展有针对性的减灾宣教活动、构建社会预防文化。通过问卷方式,调查了北京5所高校大学生的自然灾害知觉现状及特征。统计分析显示,大学生自然灾害知觉中存在不安全心理特性,主要表现在:对自身灾害知识和经验存在过高估计的乐观偏差;在灾害预期中表现出悲观的心理噪声效应;面对自然灾害多数出现消极情绪,其应急行为倾向呈负距平状态;防灾减灾过程中对政府行为依赖性、服从性高。在此基础上,提出了通过普及正确防灾知识、完善心理防御机制、强化能动意识等重塑大学生灾害知觉、调适灾害行为的建议。 相似文献
709.
710.
Enrique Gonzlez Ferrads Fernando Díaz Alonso Marta Doval Miarro Agustín Miana Aznar Jos Ruiz Gimeno Juan Francisco Snchez Prez 《Process Safety and Environmental Protection》2008,86(3):175-181
Since the damage suffered by buildings as a consequence of explosions usually affect the people inside them, it is important to take it into account when performing consequence analysis. The aim of this paper is to provide a methodology to estimate consequences to buildings from pressure waves produced by spherical vessel burst. This is done by combining characteristic overpressure–impulse–distance curves [González Ferradás, E., Diaz Alonso, F., Sanchez Perez, J.F., Miñana Aznar, A., Ruiz Gimeno, J. and Martinez Alonso, J., 2006, Characteristic overpressure–impulse–distance curves for vessel burst, Process Safety Progress, 25(3): 250–254] with PROBIT equations. The main advantage of this methodology is that it allows an overview of all the magnitudes involved, as damage is shown in the same graph as the overpressure, impulse and distance. In this paper diagrams and equations are presented to determine minor damage to buildings (broken windows, displacement of doors and window frames, tile displacement, etc.), major structural damage (cracks in walls, collapse of some walls) and collapse (the damage is so extensive that the building is partially or totally demolished). 相似文献