97 research outputs found
Olive groves intercropped in Molos, central Greece
info:eu-repo/semantics/publishedVersio
Works for the diversion of bed of rivers and torrents and their impact to the environmental of the Lagoons of Greece and Italy
This work deals with the comparative account and evaluation of the impact to the environment and especially with the alterations to the geomorphological structure and the hydro-geomorphological processes caused by the works for the diversion of the beds and the flow of rivers and torrents in the greater area of the "Katafourko lagoon" in Greece and of the "Venice lagoon" in Italy. Human intervention in the study areas, was of different aims in each location, but it all resulted in the alteration of the dynamic evolution of the hydro-geomorphological processes which has led to the creation of an "artificial" environment, controlled to a great extend by human power and which in turn, in the long term re-strengthens and reenforces the possibility of environmental destabilization
Superfast Set, Strong and Less Degradable Mineral Trioxide Aggregate Cement
Purpose. Despite the good sealing ability and biocompatibility of mineral trioxide aggregate (MTA), its slow setting, high degradation, and weakness limit its use in surgical endodontics and high stress-bearing areas. This study aimed to develop two new liquids to control these drawbacks. They were prepared from calcium chloride, fumed silica, and hydroxyapatite or calcium phosphate and coded “H” and “P,” respectively. Methods. Portland cement, Grey ProRoot® MTA, and white ProRoot MTA were mixed with distilled water (control) or liquid “H” or “P.” The pH, setting time, degradation rate, leachant/precipitate’ composition, compressive strength, and morphology were assessed. Results. Both liquids maintained MTA’s high alkalinity and reduced the setting time by 1-2 orders of magnitude. Both liquids, H in particular, significantly reduced the degradation rate of Grey ProRoot and White ProRoot MTA®. Calcite has been identified as the main phase of the leachant or precipitate formed during the cement’s degradation. Calcium hydroxide or hydroxyapatite was also identified with Grey ProRoot MTA mixed with H liquid. These liquids also significantly increased the compressive strength with no statistical differences between them; this was associated with the production of dense, consolidated structures. Conclusions. The modified MTA could be used in surgical endodontics and high stress-bearing areas
AGFORWARD: achievments during the first two years
info:eu-repo/semantics/publishedVersio
Agroforestry
Agroforestry is the practice of deliberately integrating woody vegetation (trees or shrubs) with crops and/or animal systems to benefit from the resulting ecological and economic interactions. Existing research indicates that appropriate application of agroforestry principles and practices is a key means by which the European Union might achieve more sustainable methods of food and fibre production whilst producing both profits for farmers and environmental benefits for society
- …