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Academic literature on the topic 'Ipoclorito di sodio'
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Journal articles on the topic "Ipoclorito di sodio"
Canzi, M., P. Coral, T. Roggio, L. De Filippo, and G. Panarello. "Valutazione clinico/morfologica di Amukine Med® e Braunol®, su CVC in spisilicone." Giornale di Clinica Nefrologica e Dialisi 23, no. 2 (January 24, 2018): 19–22. http://dx.doi.org/10.33393/gcnd.2011.1431.
Full textParodi, Aurora, Valeria Maria Messina, Manuela Martolini, Shpresa Haxhiaj, and Emanuele Claudio Cozzani. "Update sul management e trattamento del paziente con lesioni cutanee croniche." Italian Journal of Wound Care 5, no. 3 (December 27, 2021). http://dx.doi.org/10.4081/ijwc.2021.78.
Full textDissertations / Theses on the topic "Ipoclorito di sodio"
GIACCAGLIA, LUCA. "Assessment of the impact of water discharge from industrial plants on marine enviroments." Doctoral thesis, Università Politecnica delle Marche, 2013. http://hdl.handle.net/11566/242064.
Full textSeveral industrial plants, all over the World, are located in proximity of the coasts or in offshore areas. This is due to the necessity of directly employing marine water in industrial processes and due to their strategic position in terms of products and materials distribution pathways. Moreover, in the case of off-shore plants, the significant distance from civilized areas and coastal ecosystems allows to minimize the potential impacts derived from industrial activities. Industrial plants such as petrochemical, chemical and refinery plants, nuclear, electric stations and regasification terminals exploit continuous sea water flows in order to cool or warm their specific industrial production devices. Thus, sea water is acquired from marine environment, pumped in Cooling Water Systems (CWS) or in regasification circuits, and then it is discharged in the sea at different temperature, higher or lower for CWS and regasification circuits respectively. In addition, sea water used in industrial processes is treated with antifouling compounds, such as sodium hypochlorite, in order to avoid the proliferation of marine organisms on the circuit surfaces and to ensure the highest efficiency of industrial processes (Muller- Steinhagen, 2000). Residuals of the biocide employed and disinfection byproducts (e.g. organohalogenated compounds) can be still present at the discharge point, with potential detrimental effects on marine ecosystems (Jenner et al., 1997). Thus, the water discharged from such industrial plants generates both thermal and chemical gradients that could potentially threat the closest marine ecosystem in a synergic manner (Taylor, 2006). In Italy, industrial effluents in marine basins are subjected to well defined limits in terms of thermal variation and allowed residual biocide concentration (Italian Law D.Lgs. 152/2006). Such threshold limits have been established taking into account only positive thermal variation (e.g. CWS effluents), since the development of regasification terminals, with their cool sea water effluents, has interested Italian coasts only in the last years (Dorigoni et al., 2008). Even if the restrictions reported in D.Lgs. 152/2006 are based on the international scientific literature about the potential impact on aquatic organisms due to heated and chemically treated effluents, several studies have shown that residual chlorine and chlorination byproducts present in such thermal effluent are potentially dangerous, also in case of low 3 concentration levels, for marine organisms at different levels of the trophic chain (Geraci et al., 1993; Nebot et al. 2006; Taylor, 2006). The responses of marine organisms to chlorinated compounds have been mainly investigated in relation with cooling water effluents, with temperature higher than the recipient basin, while the effects of cool chlorinated water resulting from regasification plants are still largely unknown. Moreover, only few information about the potential synergic effects between temperature variation and chlorinated compounds on marine organisms is available (Fox and Moyer, 1975; Choi, 2002; Poornima et al., 2005). To minimize the potential impact on the marine environment of thermochemical discharge, the source sea water system should be analyzed in detail taking into account its specific thermochemical features, the characteristics of water flow, integrated with the peculiar geographical, hydrological, biological and ecological contexts of the receiving basin. The present study has been focused on the assessment of the combined effects determined on marine biota by thermochemical gradients associated with industrial sea water systems adopting sodium hypochlorite as antifouling agent. The PhD work has been articled into different parts addressing the following topics: i) analysis of the hypochlorite behaviour in sea water; ii) analysis of the effects induced by different thermo-chemical conditions on target species; iii) analysis of the ecological responses of marine areas affected by thermochemical discharges; iv) simulations of thermochemical effluent impact by means of specific mathematical models. The bioassays utilized in this study, based on different marine target species (Artemia sp., Paracentrotus lividus and Sparus aurata) and different biological responses were found to be sensitive in providing early warning signals of critical environmental conditions. Results reported here indicate that low chlorine concentrations, comparable or below those allowed by the EU legislation for industrial sea water discharges, could have negative effects on marine organisms at different levels, from altering important cellular pathways to leading to organism death in worst cases. Moreover the effects of residual oxidant concentrations can be amplified at higher temperature regimes. Such laboratory tests represent useful tools to be included in future monitoring plans for the control of different industrial activities exploiting sea water for heating or cooling purposes. Based on the results obtained through field studies performed in coastal areas affected by cooling water systems discharges (Falconara Marittima and Brindisi, Adriatic Sea, Italy) no clear effects on trophic state and habitats or biocoenosis potentially induced by thermochemical gradients have been observed, at least at few hundred meters from the 4 discharge point. However, potential impact on biotic systems could not be excluded at lower distance from the discharge points, where thermal variation and residual biocides could interact in determining detrimental effects on marine organisms at different trophic levels. The MITgcm model was used to perform spatial and temporal simulations of an off-shore regasification terminal thermochemical discharge. The typical cold plume presented a wide spreading along both vertical and horizontal directions, with considerable persistence of cold waters in space and time. The use of such a model represents an important support tool for the eco-sustainable modulation of chlorine concentrations and the thermal operative conditions of the industrial plants. Overall findings of the present study highlighted that accurate and continuous monitoring plans, taking into account in an integrated way physical, chemical as well as biological variables are urgently required to guarantee an eco-sustainable management of such industrial activities over time.
Pederzoli, Giulia. "Confronto di metodi basati sul gas plasma e sull'acqua elettrolizzata per la decontaminazione di mele." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12837/.
Full textGueyap, Metchehe Carine Megal. "La micropropagazione di spezie ad uso alimentare: il caso dello zenzero." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21681/.
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