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1.
Argiriou Athanassios A. Kassomenos Pavlos A. Lykoudis Spyridon P. 《Water, Air, & Soil Pollution: Focus》2004,4(4-5):65-74
It is well known that air pollution is one of the major factors affecting human health and the activities in a town. Among the various air pollutants an interesting one, especially for sunny climates, is the reactive O3. O3 varies significantly through the year; it is therefore very important to know the onset and the duration of the warm period of the year since at that time O3 concentrations increase significantly. In this work, an attempt was made to determine the onset of warm season of the year as well as its duration in various sites located in Northeastern Mediterranean. For this purpose, a fuzzy clustering method is used. The method was applied on the isobaric thickness between 1000 and 500 hPa for the period from 1974 to 1997. The results were compared to conventional methods based on synoptic classification and were found to be in good agreement. 相似文献
2.
Antonis Skouloudis Nikoleta Jones Spyridon Roumeliotis David Issac Alison Greig Konstantinos Evangelinos 《Journal of Environmental Planning and Management》2017,60(9):1575-1600
This paper explores the notion of environmentally induced spatial stigma through an analysis of data from interviews across public attitudes to pollution within the Asopos river basin in central Greece. The area has a 40 year plus history of legal and illicit industrial waste disposal and public debate on the associated environmental degradation. The study focuses on the perceptions and beliefs of a sector of the community likely to be directly and negatively affected by stigma, that is small business owners in the tourism and hospitality sector. The qualitative analysis explores awareness and viewpoints on environmental degradation and water quality within the local context, implications for the local economy and the individual's own enterprise, views on industrial environmental management as well as corporate responsibility and future prospects for the environmental problems of Asopos. Findings reveal a noticeable variation in views on industrial pollution and ecosystem deterioration among the respondents, but overall a strong environmentally induced stigmatization of the area. They also uncover an information asymmetry and lack of credible commitment by government bodies and industry members in disclosing accurate information, a situation likely to increase speculation and uncertainty within the community. The paper concludes by addressing implications of the findings to policy-making and managerial considerations, along with future research perspectives which aim to increase considerations of sustainability aspects for local development. 相似文献
3.
Zafiriadis I Ntougias S Mirelis P Kapagiannidis AG Aivasidis A 《Water environment research》2012,84(6):475-484
Enhanced Biological Phosphorus Removal (EBPR) under anoxic conditions was achieved using a Biological Nutrient Removal (BNR) system based on a modification of the DEPHANOX configuration. Double-probe Fluorescence in Situ Hybridization (FISH) revealed that Polyphosphate Accumulating Organisms (PAOs) comprised 12.3 +/- 3.2% of the total bacterial population in the modified DEPHANOX plant. The growing bacterial population on blood agar and Casitone Glycerol Yeast Autolysate agar (CGYA) medium was 16.7 +/- 0.9 x 10(5) and 3.0 +/- 0.6 x 10(5) colony forming units (cfu) mL(-1) activated sludge, respectively. A total of 121 bacterial isolates were characterized according to their denitrification ability, with 26 bacterial strains being capable of reducing nitrate to gas. All denitrifying isolates were placed within the alpha-, beta-, and gamma-subdivisions of Proteobacteria and the family Flavobacteriaceae. Furthermore, a novel denitrifying bacterium within the genus Pseudomonas was identified. This is the first report on the isolation and molecular characterization of denitrifying bacteria from EBPR sludge using a DEPHANOX-type plant. 相似文献
4.
Michael Lasithiotakis Loukas Zoumboulakis Spyridon Soulis Johannis Simitzis 《环境质量管理》2019,29(2):155-168
The calorific value enhancement of lignite by briquetting with novolac resin and plastic wastes is discussed in this work. Mixtures of several types of lignite with novolac as binder, with or without polypropylene, were manufactured in the form of pellets by curing. Pellets were pyrolyzed at 300°C and 500°C, and weight losses were determined. Chemical transformations during curing were studied by Fourier‐transform infrared spectroscopy, and the corresponding changes in the microstructure of the pellets were investigated by optical microscopy. Specimens of cured pellets were tested for their impact resistance index (IRI) and water resistance index (WRI). The incorporation of polypropylene in the pellets leads to an increase of IRI and a decrease of WRI. The calorific value was measured for both cured and pyrolyzed pellets. All pellets exhibit increased lower calorific value compared with raw lignite, indicating an upgrade of their energy content. 相似文献
5.
Anastasia K. Paschalidou Spyridon Karakitsios Savvas Kleanthous Pavlos A. Kassomenos 《Environmental science and pollution research international》2011,18(2):316-327
In the present work, two types of artificial neural network (NN) models using the multilayer perceptron (MLP) and the radial
basis function (RBF) techniques, as well as a model based on principal component regression analysis (PCRA), are employed
to forecast hourly PM10 concentrations in four urban areas (Larnaca, Limassol, Nicosia and Paphos) in Cyprus. The model development is based on a
variety of meteorological and pollutant parameters corresponding to the 2-year period between July 2006 and June 2008, and
the model evaluation is achieved through the use of a series of well-established evaluation instruments and methodologies.
The evaluation reveals that the MLP NN models display the best forecasting performance with R
2 values ranging between 0.65 and 0.76, whereas the RBF NNs and the PCRA models reveal a rather weak performance with R
2 values between 0.37-0.43 and 0.33-0.38, respectively. The derived MLP models are also used to forecast Saharan dust episodes
with remarkable success (probability of detection ranging between 0.68 and 0.71). On the whole, the analysis shows that the
models introduced here could provide local authorities with reliable and precise predictions and alarms about air quality
if used on an operational basis. 相似文献
6.
H. Orhan Akman Charalampos Karadimas Yolanda Gyftodimou Maria Grigoriadou Haris Kokotas Anastasia Konstantinidou Hector Anninos Efstratios Patsouris Harshwardhan M. Thaker Jeffrey B. Kaplan Isaam Besharat Konstantina Hatzikonstantinou Spyridon Fotopoulos Salvatore DiMauro Michael B. Petersen 《黑龙江环境通报》2006,26(10):951-955
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8.
Eleftheria Mitka Antonios Gasteratos Nikolaos Kyriakoulis Spyridon G. Mouroutsos 《Safety Science》2012,50(9):1888-1897
Domestic robotics is a growing sector with the potential for a large number of commercial applications. Robotics technologies have been successfully applied in industrial production lines, yet, for them to be successful in a dynamic household environment the need for increased reliability, robustness and other special capabilities become paramount. We are not far from the time when people will live and interact with robots and, thus, safety becoming the fundamental issue to observe. Robot designers should produce safe products for humans no matter what failure, malfunction or mishandle may occur. Thus, respective safety procedures ought to be applied to domestic robots as well. The most critical challenge is to preserve safety of humans without forfeiting a single token of the efficiency required to perform any task. In this technical communication, the authors address the need for safety regulations in domestic robotics and, while they do not intend to replace any current robot safety standards or guidelines, the proposed work may serve as a supplement to the standards. Since specific safety standards for domestic robots are not available, we propose that their safety verification should be carried out on the base of well-applied standards that developed in other areas and discussed here. The communication in hand provides the ground upon which a standard on domestic robots can be built. Moreover, it proposes a systemic approach that explicitly relates the system and user requirements to a list of safety problems, in order to achieve an adequate level of safety in domestic robotics. 相似文献
9.
The quantities of water are not distributed uniformly in space and time. Greece compared to some other Mediterranean countries
is found in advantageous position regarding the availability of water resources. However, there are regions with great in
quantity water reserves and others with intense deficiencies. The management of water resources in Greece is concentrated
in the systematic spatiotemporal monitoring and forecast of two basic multidimensional parameters, the availability of water
resources and the water demand, as well as, in the implementation of necessary measures for the satisfaction of needs, regarding
the fields of economy and environment. This work describes and analyses the existing status of water resources in Greece,
as well as, the framework of applied policy. Furthermore, measures and actions for the management of water resources are proposed. 相似文献
10.
Ntougias S Baldrian P Ehaliotis C Nerud F Antoniou T Merhautová V Zervakis GI 《Chemosphere》2012,88(5):620-626
Thirty-nine white-rot fungi belonging to nine species of Agaricomycotina (Basidiomycota) were initially screened for their ability to decrease olive-mill wastewater (OMW) phenolics. Four strains of Ganoderma australe, Ganoderma carnosum, Pleurotus eryngii and Pleurotus ostreatus, were selected and further examined for key-aspects of the OMW biodegradation process. Fungal growth in OMW-containing batch cultures resulted in significant decolorization (by 40-46% and 60-65% for Ganoderma and Pleurotus spp. respectively) and reduction of phenolics (by 64-67% and 74-81% for Ganoderma and Pleurotus spp. respectively). COD decrease was less pronounced (12-29%). Cress-seeds germination increased by 30-40% when OMW was treated by Pleurotus strains. Toxicity expressed as inhibition of Aliivibrio fischeri luminescence was reduced in fungal-treated OMW samples by approximately 5-15 times compared to the control. As regards the pertinent enzyme activities, laccase and Mn-independent peroxidase were detected for Ganoderma spp. during the entire incubation period. In contrast, Pleurotus spp. did not exhibit any enzyme activities at early growth stages; instead, high laccase (five times greater than those of Ganoderma spp.) and Mn peroxidases activities were determined at the end of treatment. OMW decolorization by Ganoderma strains was strongly correlated to the reduction of phenolics, whereas P. eryngii laccase activity was correlated with the effluent’s decolorization. 相似文献