Search results for "Category"
showing 10 items of 4660 documents
Voluntary Agreements to Promote the Use of Reclaimed Water at Tordera River Basin
2015
The voluntary agreement to promote the use of reclaimed water is an economic policy instrument (EPI) which focuses on improving water management by using reclaimed water. Following a win-win strategy, this EPI was implemented in the Tordera river basin (Spain), an area with endemic water scarcity problems and high competition among users for water resources. The assessment of the EPI suggests that significant positive outcomes have achieved from an environmental and economic point of view. Thus, the demand of freshwater has decreased and the availability of water is guaranteed even during summer period allowing therefore for the maintenance of economic activities (agriculture and golf cours…
Tourism resources and their development in Maldive Islands
1985
Maldive Islands are characterized by a unique coral nature and thus they posses unique tourism resources though in a one-sided way, namely in the submarine and littoral environment of the islands, lagoons and reefs, associated with the year-round tropical climate. Therefore, not only divers and snorklers enjoy the profuse underwater resources, but also ‘beach tourists’ are attracted by the nature of the beaches and the climatic conditions as well. This environment really guarantees relaxation and recreation. Tourism in Maldives which was introduced in 1972 only, has successfully developed so far. Proof is given by the rapidly growing number of tourists and tourist ‘resorts’ (islands) over t…
Maldivian Tourist Resorts and their Environmental Impact
1993
In the past two decades, the Maldivians have built up a flourishing tourist industry. Tourist resorts have been established on hitherto uninhabited small islands and by 1990 the number of tourists has increased to nearly 200 000. The Maldivian tourist resorts represent a special type of tropical beach resorts catering only to the tourists’ needs for accommodation, board, leisure and recreation. They are distinctly separate from the islands inhabited by the Maldivians and intercultural communication does not take place. These resorts are in effect ‘tourist enclaves’. Holiday facilities in the resorts are clearly geared to the coastal environment - the beach, lagoon and reef. The impact of to…
Geothermal energy release at the Solfatara of Pozzuoli (Phlegraean Fields): Phreatic and phreatomagmatic explosion risk implications
1984
The H2O, CO2 and H2S outputs at the Solfatara of Pozzuoli have been measured and a map of the exhaling areas has also been made. The energy released at the surface by the fluids has been estimated to be 1019 ergs/day. The presence of aquifers at Phlegraean Fields increases the phreatic and phreatomagmatic explosion risk. Our results suggest that even if an uprising magma may interact with water at depth, an explosion could occur only at the shallow levels of a few hundred meters. Since the transfer of energy toward the surface is favoured by the presence of fractures, a detailed analysis of the deep fracture network would help to evaluate the risk levels of the various areas of Phlegraean F…
Pattern Classification from Multi-beam Acoustic Data Acquired in Kongsfjorden
2021
Climate change is causing a structural change in Arctic ecosystems, decreasing the effectiveness that the polar regions have in cooling water masses, with inevitable repercussions on the climate and with an impact on marine biodiversity. The Svalbard islands under study are an area greatly influenced by Atlantic waters. This area is undergoing changes that are modifying the composition and distribution of the species present. The aim of this work is to provide a method for the classification of acoustic patterns acquired in the Kongsfjorden, Svalbard, Arctic Circle using multibeam technology. Therefore the general objective is the implementation of a methodology useful for identifying the a…
Vertical profile of atmospheric dimethyl sulfide in the Arctic Spring and Summer
2017
Abstract. Vertical distributions of atmospheric dimethyl sulfide (DMS(g)) were sampled aboard the research aircraft Polar 6 near Lancaster Sound, Nunavut, Canada in July 2014 and on pan-Arctic flights in April 2015 that started from Longyearbyen, Spitzbergen, and passed through Alert and Eureka, Nunavut and Inuvik, Northwest Territories. Larger mean DMS(g) mixing ratios were present during April 2015 (campaign-mean of 116±8 pptv) compared to July 2014 (campaign-mean of 20±6 pptv). Observations in July 2014 indicated a decrease in DMS(g) mixing ratios with altitude up to about 3 km, and the largest mixing ratios were found near the surface above ice-edge and open water, coincident with incre…
Real-time simultaneous detection of volcanic Hg and SO2at La Fossa Crater, Vulcano (Aeolian Islands, Sicily)
2007
Measuring Hg/SO2 ratios in volcanic emissions is essential for better apportioning the volcanic contribution to the global Hg atmospheric cycle. Here, we report the first real-time simultaneous measurement of Hg and SO2 in a volcanic plume, based on Lumex and MultiGAS techniques, respectively. We demonstrate that the use of these novel techniques allows the measurements of Hg/SO2 ratios with a far better time resolution than possible with more conventional methods. The Hg/SO2 ratio in the plume of FO fumarole on La Fossa Crater, Vulcano Island spanned an order of magnitude over a 30 minute monitoring period, but was on average in qualitative agreement with the Hg/SO2 ratio directly measured…
100 Jahre Zeitschrift für Orthopädie
2008
The article affords insight into the one hundred years' history of the Journal of Orthopedics. The existing 130 volumes reflect the change in the orthopedic spectrum of illness, diagnostic investigation and treatment. Already in its first few years of existence, the journal was a forum for international exchange. Investigation of various epochs showed that the editors applied strict scientific standards in selecting the publication, despite basis changing historical conditions. They were able to prevent political interventions appreciably influencing the character of the journal. At the same time, the negative effects which the two world wars and National Socialism had on the further develo…
Taxonomic Revision of the Genus Trictenotoma Gray, 1832 (Coleoptera: Trictenotomidae). Part 3 – Species from the Philippine Archipelago, with Descrip…
2021
The species of Trictenotoma Grey, 1832 from the Philippine Archipelago are critically assessed, description of T. boudanti Drumont et Telnov sp. nov. from Balabac and Palawan, and a redescription of T. cindarellaKriesche, 1921 from Mindanao are provided. A key to the Philippine Trictenotomidae Blanchard, 1845 is presented for the first time.
Rare and threatened pondweed communities in anthropogenic water bodies of Opole Silesia (SW Poland)
2011
The paper presents results of geobotanic studies conducted in anthropogenic water bodies like excavation ponds, fish culture ponds, other ponds, dam reservoirs, ditches, channels and recreational pools incl. watering places in Opole Silesia and surroundings in the years 2002-2005. The research focused on occurrence of threatened and rare pondweed communities. As the result of the investigations of several dozen of water bodies, 28 localities of rare pondweed communities were documented by 75 phytosociological relevés. Associations of <em>Potametum trichoidis</em> J. et R Tx. in R. Tx. 1965, <em>Potametum praelongi</em> Sauer 1937, <em>P. alpini</em> Br.-B…