2,466 research outputs found
Medical waste managment in dentistry through enzime fuel cells
No full textAlthough waste is traditionally assessed as a polluting thing which need to be reduced or lessened, its management is a necessity wherever human beings live. Every year, global energy request increases. While oil products actually fulfil the great part of the energy demand, the growing difficulty in meeting it and, as a consequence, all the pollution and global warming problems are driving scientific research to an alternative and renewable energy.
Waste contain a significant energy amount; if we could employ them and convert them into a reusable form, we might provide either to supply clean energy and to resolve the waste global problem. This issue is felt in a dental surgery too, because it concerns dangerous and infectious-risk waste disposal.
The possibility of the employment of pieces of waste and consequently of their inside energy converting can represent a turning point in the clear energy field, gaining an enormous benefit for the environment and significantly lowering waste management costs. In recent years, Enzymatic Biofuel Cells (EFC), with substantial and green advantages have become a promising power source being distinguishable among the alternative energy conversion systems. Nowadays, since fossil fuel depletion and global climate change have started to threaten our existence and future, extensive research has been devoted on finding alternative energy resources and developing more efficient and environmentally friendly processes for energy storage and conversion. The current work focuses on enzymatic biological fuel cells (EFC), which are designed to convert the chemical energy of the fuel into electricity in a sustainable manner. The aim of our study is to develop enzymatic fuel cells using the infectious-risk special waste, such as blood and saliva, as fuels. Considering that blood contains glucose, the EFC devices development can be developed through the preparation of a glucose-oxidized (GOx) based bioanode, immobilized on an electrode surface. During our research we developed an Enzimatic Fuel Cell prototype and we evaluated its ability to harvest energy from the blood and the saliva inside the risk-infectious medical waste and to employ it in order one day to help the energy requirements of a consulting room.
This device is based on GOx as biocatalyst and either Nafion orlow cost mambranes based on polyaromatic polymers were used as polymer electrolytes. Moreover, we also have explored the performance of single chamber configuration, which directly eliminate the use of membranes, to assess the applicability of EFCs for dentistry waste management
Effects of long-term tenofovir-based combination antiretroviral therapy in HIV-hepatitis B virus coinfection on persistent hepatitis B virus viremia and the role of hepatitis B virus quasispecies diversity
No full textAbstract not availableJennifer Audsley, Stephen J. Bent, Margaret Littlejohn, Anchalee Avihingsanon, Gail Matthews, Scott Bowden, Julianne Bayliss, Fabio Luciani, Lilly Yuen, Christopher K. Fairley, Stephen Locarnini, Sharon R. Lewin and Joe Sasadeus
The Poem of Memory. "Triumphi"
No full textWriting of the "Triumphi" Fabio Finotti finds that its author undercuts a medieval idea of ascent to God in the structural progression from Love to Chastity, Death, Fame, Time, and Eternity. Here Petrarch programmatically counters Dante, transforming a universal, eschatological vision into a subjective, cultural and psychological experience
Fabio Tronchetti
No full textFabio Tronchetti is an Associate Professor of Law at the School of Law of the Harbin Institute of Technology, People’s Republic of China, where he also serves as Director of the International Law Department. Since January 2014 he works as an Adjunct Professor of Comparative National Space Law at the the School of Law of the University of Mississippi, United States. Earlier in his career he was Lecturer and Academic Coordinator at the International Institute of Air and Space Law, Leiden University, the Netherlands.
Professor Tronchetti is regularly invited to give lectures at several European and Chinese Universities, including the Cologne University (Germany), the Leiden University (the Netherlands) and the Beihang University (Beijing, China) and has participated as a speaker at numerous international conferences.
Prof. Tronchetti’s scholarly is primarily in the areas of international space law and public international law. His publications include two books and more than 20 articles in internationally peer-reviewed space law and policy journals, such as Space Policy, the German Journal of Air and Space Law, the Journal of Space Law, etc.
He holds a PhD in International Space Law (Leiden University) and an Advanced LL.M in International Relations (Bologna University, Italy). He is Member of the International Institute of Space Law (IISL), European Centre for Space Law (ECSL), and the Asian Society of International Law (ASIL). He is the recipient of the 2007 Diederiks-Verschoor award for the best paper submitted by an author not older than 40 years to the International Institute of Space Law (IISL) during the 58th International Astronautical Congress of the International Astronautical Federation (IAF).https://commons.erau.edu/stm-images/1076/thumbnail.jp
Standardization of solid recovered fuels through gravity separation and chemical based imaging techniques
No full textThe European politics is addressed, in their last years, more and more towards the abolition of landfills and oriented to verify the possibility to improve their recovery through actions of recycling, composting and energy production. Currently the European Directive 2008/98/EC, through the principle of End of Waste (EoW), is driving the utilization of new methods of waste processing in order to transform them it into a new "renewable" product. The post-consumer plastics resulting from packaging account for about 60% of total plastics waste (i.e. 23 million tons) produced in Europe. The high quality Solid Recovered Fuel (SRF) is a partial solution to the problem of waste and landfill management, becoming integral and essential in the closure of the waste cycle, representing one of virtuous processes for the treatment and recovery of waste. The application of recycling strategies, finalised to polymers recovery, can thus represent an important opportunity to reduce: i) not renewable raw materials utilization (i.e. oil), ii) carbon dioxide emissions and iii) the amount of plastic waste disposed-off. Aim of this work is to study the possibility offered by the integrated utilization of Chemical Imaging (CI) based techniques in order to obtain a good quality SRF characterized by a low content of PVC derived packaging to be used for the production of thermal energy. Packaging "final waste", in fact, is usually characterized by the presence of PolyVinyl Chloride (PVC). Therefore the association of a specific gravity separation architecture with the CI based sensing units, could strongly improve the quality of "final waste" fraction as resulting from classical recycling processes based on milling, classification and density separation. The presence of PVC, in fact, has a negative influence on the combustion and heat recovery of these products due to the production of dioxins and furans. The utilization of the proposed combined approach (i.e. gravity and CI based) could contribute to obtain a SRF characterized by a very low PVC content, thus allowing to certify SRF according to UNI EN 15359:2011 and to correctly utilise it for thermal energy production
Pondera exacta ad Castoris
No full textTra gli instrumenta inscripta i pesi romani che recano l’iscrizione exactum ad Castoris costituiscono
un gruppo non trascurabile per numero di esemplari e interesse storico. La formula epigrafica garantiva la
conformità rispetto ai campioni ufficiali conservati presso il tempio dei Dioscuri a Roma. La presenza di
tale iscrizione si riscontra prevalentemente su pesi in bronzo di due tipologie: a sfera decalottata e a ciotola
impilabili. Lo studio della diffusione di questa particolare categoria di pondera, i contesti di ritrovamento
e le loro stesse caratteristiche suggeriscono che essi siano stati concepiti per essere usati sia in Italia sia
nelle province europee di frontiera da funzionari, mercatores o medici per pesare quantità medio-piccole
di merci o sostanze, verosimilmente nel corso del II secolo d.C
Per un ritratto di André Tosel
No full textIn memory of André Tosel, who passed away last March 14th in his hometown Nice, «Gramsciana» publishes an article on Gramsci in France that he had sent to this journal as a contribution to the section «My Gramsci». The editor, Fabio Frosini, prefaces the text with a quick portrait of Tosel as a philosophy professor, an influential Marxist intellectual, a critic of contemporary capitalism, as well as the author of landmark books on Spinoza, Kant and Marx and, above all, one of the most important Gramsci scholars of the last 50 years
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