Search results for "RUN"
showing 10 items of 2820 documents
Seawater carbonate chemistry and shell mineralogy, microstructure, and mechanical strength of four Mediterranean gastropod species near a CO2 seep
2017
Marine CO2 seeps allow the study of the long-term effects of elevated pCO2 (ocean acidification) on marine invertebrate biomineralization. We investigated the effects of ocean acidification on shell composition and structure in four ecologically important species of Mediterranean gastropods (two limpets, a top-shell snail, and a whelk). Individuals were sampled from three sites near a volcanic CO2 seep off Vulcano Island, Italy. The three sites represented ambient (8.15 pH), moderate (8.03 pH) and low (7.73 pH) seawater mean pH. Shell mineralogy, microstructure, and mechanical strength were examined in all four species. We found that the calcite/aragonite ratio could vary and increased sign…
Individual and population-level responses to ocean acidification
2016
Ocean acidification is predicted to have detrimental effects on many marine organisms and ecological processes. Despite growing evidence for direct impacts on specific species, few studies have simultaneously considered the effects of ocean acidification on individuals (e.g. consequences for energy budgets and resource partitioning) and population level demographic processes. Here we show that ocean acidification increases energetic demands on gastropods resulting in altered energy allocation, i.e. reduced shell size but increased body mass. When scaled up to the population level, long-term exposure to ocean acidification altered population demography, with evidence of a reduction in the pr…
Trace elements in shells of common gastropods in the near vicinity of a natural CO<sub>2</sub> vent: no evidence of pH-de…
2014
Abstract. There is concern that the use of natural volcanic CO2 vents as analogs for studies of the impacts of ocean acidification on marine organisms are biased due to physiochemical influences other than seawater pH alone. One issue that has been raised is whether potentially harmful trace elements in sediments that are rendered more soluble and labile in low pH environments are made more bioavailable, and sequestered in the local flora and fauna at harmful levels. In order to evaluate this hypothesis, we analyzed the concentrations of trace elements in shells (an established proxy for tissues) of four species of gastropods (two limpets, a topshell and a whelk) collected from three sites …
Le iscrizioni runiche sullo sfondo della cultura Frisone altomedievale
2000
The study offers a critical edition of the Old Frisian runic corpus, together with a linguistic and philological analysis of the inscriptions examined, also in the light of their context of occurrence,
The Criteria for the Formation of a Frisian Runic Corpus Revisited
1998
The Frisian corpus of runic inscriptions consists of about twenty items, some of which are very short, while other present several problems of legend and interpretation. On the other end, it is undeniable that the Frisian runic inscriptions constitute a uniform corpus with a recognizable identity that can be pinpointed through a series of specific criteria. In the present paper I enter the debate about the origin of the Frisian runic inscriptions, analysing the geographical, linguistical and epigraphic criteria identified by the previous research, providing whenever possible further and new elements, in order to strengthen the foundations of the Frisian runological tradition.
Gamma Vel cluster membership and IMF
2016
Understanding the properties of young open clusters, such as the Initial Mass Function (IMF), star formation history and dynamic evolution, is crucial to obtain reliable theoretical predictions of the mechanisms involved in the star formation process. We want to obtain a list, as complete as possible, of confirmed members of the young open cluster Gamma Velorum, with the aim of deriving general cluster properties such as the IMF. We used all available spectroscopic membership indicators within the Gaia-ESO public archive together with literature photometry and X-ray data and, for each method, we derived the most complete list of candidate cluster members. Then, we considered photometry, gra…
Instability Resistance Training Across the Exercise Continuum
2013
Context: Instability resistance training (IRT; unstable surfaces and devices to strengthen the core or trunk muscles) is popular in fitness training facilities. Objective: To examine contradictory IRT recommendations for health enthusiasts and rehabilitation. Data Sources: A literature search was performed using MEDLINE, SPORT Discus, ScienceDirect, Web of Science, and Google Scholar databases from 1990 to 2012. Study Selection: Databases were searched using key terms, including “balance,” “stability,” “instability,” “resistance training,” “core,” “trunk,” and “functional performance.” Additionally, relevant articles were extracted from reference lists. Data Extraction: To be included, rese…
Iberian Distribution of the Freshwater Snail Genus Bithynia Leach, 1818 (Mollusca: Truncatelloidea), Vector of Opisthorchiasis and Metorchiasis
2021
Background: Opisthorchis felineus and Metorchis bilis are trematodes that cause opisthorchiasis and metorchiasis, respectively. The freshwater snails Bithynia hispanica and B. tentaculata are the respective intermediate hosts for these parasites in the Iberian Peninsula, where both parasites are present. Methods: To study the distribution of these snail species, an exhaustive literature review and revision of museum collections was performed. Results: A total of 370 localities were compiled and mapped. B. tentaculata were found throughout the Iberian Peninsula, both in Spain and Portugal, while B. hispanica was found only in the Mediterranean coast of Spain. Conclusion: Knowing the distribu…
Organisierte Kriminalität. Die Mafia: globale Szenarien und internationale Connections
2012
Lo studio dei fenomeni criminali di tipo mafioso rende necessaria una costante attività di confronto, verifica e aggiornamento dei paradigmi di analisi; è normale, del resto, che ogni fenomeno sociale letto ed esaminato entro uno specifico universo di significazione, meriti una nuova attenta ricognizione per verificare se siano cambiate o meno le sue peculiari caratteristiche, quando il contesto di riferimento muta e l’oggetto di studio assume connotazioni differenti. Il saggio analizza in chiave diacronica e comparativa i processi di trasformazione che hanno interessato le principali organizzazioni criminali italiane, proiettando le loro attività all'interno di uno scenario globale. Nel co…
Sarunu festivāla "Lampa" dalībnieku - organizāciju motivācija un komunikācijas prakse
2021
Bakalaura darba „Sarunu festivāla "LAMPA" dalībnieku – organizāciju motivācija un komunikācijas prakse” mērķis ir noskaidrot organizāciju motivāciju rīkot saturisko programmu Sarunu festivālā “LAMPA”. Noskaidrot, kā organizācijas vērtē 2020. gada pasākumu, salīdzinot to ar citiem gadiem. Darbu veido teorētiskā bāze par komunikāciju, organizāciju komunikāciju, pasākumu komunikāciju un motivāciju. Datu ieguvei izmantota daļēji strukturētā intervija, aptauja un kvantitatīvā kontentanalīze. Rezultāti liecina, ka organizācijām svarīgi ir aktualizēt tēmas, veicināt savu mērķu izpildi un stiprināt savu tēlu. Organizācijas novērtē klātienes pasākumus, bet formāts nav noteicošais faktors festivāla d…