1,720,977 research outputs found
Identification and Count of the Active Sites in Olefin Polymerization Catalysis by Oxygen Quench
No full textA simple method for the counting and structural elucidation of the different active sites in an olefin polymn. catalyst system is introduced, based on a reaction quench by O2 under controlled kinetics, followed by NMR anal. of the OH-labeled chain end-groups formed upon acidic work-up of the polymer. The method is successfully benchmarked using a mol. bis(phenoxyamino)Zr(IV)-based catalyst characterized by a comparatively long-lasting controlled kinetic transient at room temp
SDS2013 – Sustainable Development Symposium – 3rd Annual European Post-graduate Symposium – 13-15 February 2013, Naples.Italy
No full textThe “Postgraduate European Sustainable Development Symposia” represented, in the first two editions, an opportunity for young researchers, from a broad spectrum of disciplinary
backgrounds and interested in Sustainable Development, to share their knowledge and
discuss about hot points related to new technologies, the impact of human activities on the environment and new strategies to increase the sustainability of human activities.
The Symposium was originally designed to give postgraduate researchers from European
universities (especially those who are at an early stage of their research) to present their
work in a multi-disciplinary and friendly environment.
The first Symposium was held at the Trinity College (TCD) in Dublin during February 2011.
The second edition was held at the Graz University of Technology, Institute for Process and
Particle Engineering on February 2012.
This year, “Parthenope” University of Naples hosts the 3rd Edition. In the suggestive city
of Naples, full of history and natural heritages, Prof. Paul Leslie Bishop from Department
of Civil & Environmental Engineering, University of Cincinnati, (Cincinnati, USA), Prof.
Hans Schnitzer from Institute for Process and Particle Engineering, Technical University of
Graz (TU Graz) and Dr. Giacomo D’Alisa from Institute of Technology and Environmental
Science (ICTA), Autonomous University Barcelona (UAB) will share their expertise and
knowledge with the young participants.
We wish to thank Proff. Sergio Ulgiati and Stefano Dumontet, whose experience was so
precious. A special thank to Prof. Hans Schitzer, Prof. Paul Leslie Bishop, Dr. Giacomo
D’Alisa, Dr. Pier Paolo Franzese and to all give their contribution to SDS2013, with
particular regards to Dr.Anna Cavaliere and Prof. Marco Guida, who kindly supported us
in this adventure, and to Dr. Rosario Bianco who made possible the making of this book.
This is a simple collection of the oral and poster contributions to SDS2013, just a seed in
the wide field of Science
Environmental cost and impacts of chemicals used in agriculture: An integration of emergy and Life Cycle Assessment
Full text linkModern intensive agriculture worldwide is generating increasing environmental pressure, which prevents its sustainable development. A number of agricultural sustainability assessment approaches and methodological frameworks have been developed by research worldwide to assess the environmental costs and impacts of resources used in agricultural production. A joint use of Life Cycle Assessment (LCA, to assess a process' performance and environmental impacts) and Emergy Accounting (EMA, to estimate environmental support to resource generation and provision) is proposed in this study. The goal is not only to ascertain the environmental ‘cost’ of production of selected chemical resources used in agricultural processes, but also to develop a reliable calculation procedure capable to integrate the two approaches (LCA and EMA), while considering their different allocation algebra and space-time scales of application. Specifically, the UEVs of glyphosate and urea, which are respectively the most used herbicide and nitrogen fertilizer used in worldwide agriculture, are calculated, yielding values of 2.47E+13 sej/kg and 7.07E+12 sej/kg, respectively. In order to do so, UEVs of intermediate process chemicals such as ammonia, acetic anhydride, chlorine gas, formaldehyde, phosphorous chloride, and sodium hydroxide have also been calculated or updated, thus providing at the same time a procedure and a set of values potentially useful for future studies. The LCA impacts of agro-chemicals in China are compared to worldwide averages from the Ecoinvent database, and the UEVs for several chemicals are also compared to previous estimates from published emergy literature
La contabilità biofisica per la valutazione della sostenibilità ambientale dei Comuni italiani
No full textLa studio della sostenibilità ambientale dei Comuni
italiani non può prescindere da una valutazione biofisica
delle risorse ambientali che guidano l’evoluzione
dei sistemi naturali ed economico-produttivi delle comunità
locali. La contabilità biofisica su base emergetica
consente lo studio dei sistemi territoriali mediante
la valutazione dei principali flussi di materia, energia
e denaro che supportano le dinamiche naturali ed
antropiche. In questo articolo vengono discussi due
casi di studio inerenti i Comuni della Penisola Sorrentina
di Massa Lubrense e Vico Equense. I risultati dimostrano
come lo sviluppo e l’applicazione della
contabilità biofisica, complementare rispetto ai più
tradizionali bilanci economici, possano offrire un utile
supporto per la valutazione della performance e
della sostenibilità ambientale dei Comuni italiani
Environmental cost and impacts of chemicals used in agriculture: An integration of emergy and Life Cycle Assessment
No full textModern intensive agriculture worldwide is generating increasing environmental pressure, which prevents its sustainable development. A number of agricultural sustainability assessment approaches and methodological frameworks have been developed by research worldwide to assess the environmental costs and impacts of resources used in agricultural production. A joint use of Life Cycle Assessment (LCA, to assess a process' performance and environmental impacts) and Emergy Accounting (EMA, to estimate environmental support to resource generation and provision) is proposed in this study. The goal is not only to ascertain the environmental 'cost' of production of selected chemical resources used in agricultural processes, but also to develop a reliable calculation procedure capable to integrate the two approaches (LCA and EMA), while considering their different allocation algebra and space-time scales of application. Specifically, the UEVs of glyphosate and urea, which are respectively the most used herbicide and nitrogen fertilizer used in worldwide agriculture, are calculated, yielding values of 2.47E+13 sej/kg and 7.07E+12 sej/kg, respectively. In order to do so, UEVs of intermediate process chemicals such as ammonia, acetic anhydride, chlorine gas, formaldehyde, phosphorous chloride, and sodium hydroxide have also been calculated or updated, thus providing at the same time a procedure and a set of values potentially useful for future studies. The LCA impacts of agro-chemicals in China are compared to worldwide averages from the Ecoinvent database, and the UEVs for several chemicals are also compared to previous estimates from published emergy literature
Life cycle assessment of Brassica carinata biomass conversion to bioenergy and platform chemicals
No full textCropping Bioenergy and Biomaterials in Marginal Land. The added value of the Biorefinery concept.
No full textMonitoring regional land use and land cover changes in support of an environmentally sound resource management.
No full textUrban resource use and environmental performance indicators: an application of decomposition analysis.
No full text
- …
