Search results for "rete"

Apprendere in rete e pedagogia della ricerca di una formazione possibile, Relazione presentata nelle “Giornate di Studio sull'E-learning” a Palermo 1…

Photoinduced lethal and sublethal toxicity of retene, a polycyclic aromatic hydrocarbon derived from resin acid, to coregonid larvae

2004

A comparative investigation on the acute phototoxicity of retene to vendace (Coregonus albula) and whitefish (C. lavaretus), both having pelagial larvae in spring, was conducted. To test the concept of early warning of sublethal biomarkers in relation to lethality to posthatch stages, we examined the effects of ultraviolet-B (UV-B) and retene on the levels of cytochrome P4501A (CYP1A) and heat shock protein 70 (HSP70) by exposing the animals to elevated levels of these factors for 48 and 72 h, respectively. Whereas UV-B and retene on their own were not lethal, simultaneous retene and UV-B exposure caused very high mortality to both species. The median lethal concentration (LC50; i.e., the c…

Application of algae in active biomonitoring of the selected holding reservoirs in swietokrzyskie province

2016

During the years 2014-2015, biomonitoring studies were carried out at three holding reservoirs located in Swietokrzyskie Province (central Poland): Kielce artificial lake, Chancza reservoir and Sielpia reservoir. In sea water algae Palmaria palmata (Linnaeus) Weber & Mohr, exposed in the analysed waters, the increases of concentrations were determined by the atomic absorption spectrometry method (AAS), of the following: Mn, Fe, Cu, Zn, Cd and Pb. Conductivity and pH were also determined in the reservoirs waters. The differences between the increases of heavy metal concentrations in the samples of algae found along the coastline were indicated; they result from different distances from the p…

Occurrence of some heavy metals in waters and bottom sediments in two small dam reservoirs

2008

Agency relationship in Global Venture Lab

2014

This Master's thesis analyzes the Agency relationships in university environment by applying a Global Venture Lab model of organization. The Global Venture Lab described in this study is a growth venture incubator that has been developed in the private organizational model to supplement the general faculty governance and the development of the University in the field of commercialization of inventions. In the study, the agent theory dimensions of moral hazard and adverse selection are applied. The research is conducted by action research methods and it is partly written in real time and partly with a retrospective approach. The data of the research is gathered during the development project…

Environmental hazard and water quality: the River Platani basin

2007

The River Platani, situated in the western side of Sicily, is one of the greatest rivers of the island. It runs for about 103 Km and the basin extends to about 1,784.9 Km. It rises near Santo Stefano Quisquina (Ag); the river flows to Capo Bianco (Ag) ends in the Mediterranean Sea. The morphology of the basin is predominantly characterized by rises of modest entities with slopes sweet or calanques. In the containing gypsum and carbonatic stony heaps are diffused the karst phenomena. In the Platani basin some mines are located of rock salt and potassium salts; today the mines are closed after a long activity and they interact with the geomorphology of the territory and on the water quality o…

Rocking behaviour of multi-block columns subjected to pulse-typeground motion accelerations

2016

Ancient columns, made with a variety of materials such as marble, granite, stone or masonry are an important part of theEuropean cultural heritage. In particular columns of ancient temples in Greece and Sicily which support only the architrave arecharacterized by small axial load values. This feature together with the slenderness typical of these structural members clearlyhighlights as the evaluation of the rocking behaviour is a key aspect of their safety assessment and maintenance. It has to be notedthat the rocking response of rectangular cross-sectional columns modelled as monolithic rigid elements, has been widely investigatedsince the first theoretical study carried out by Housner (19…

Spatial data fusion and analysis for soil characterization: a case study in a coastal basin of south-western Sicily (southern Italy)

2012

Salinization is one of the most serious problems confronting sustainable agriculture in semi-arid and arid regions. Accurate mapping of soil salinization and the associated risk represent a fundamental step in planning agricultural and remediation activities. Geostatistical analysis is very useful for soil quality assessment because it makes it possible to determine the spatial relationships between selected variables and to produce synthetic maps of spatial variation. The main objective of this paper was to map the soil salinization risk in the Delia-Nivolelli alluvial basin (south-western Sicily, southern Italy), using multivariate geostatistical techniques and a set of topographical, phy…

Arjen oivalluksista soiviksi säkeiksi : rocklyriikan ominaispiirteet lajina ja rocksanoittajan tekijyys

2011

Tässä tutkimuksessa perehdytään rocklyriikan määrittämiseen lajina sekä sen kirjoittamiseen. Tutkimus keskittyy erityisesti tiettyjen teemojen, kuten lajiteorian, tekijyyden, kirjoittamisen prosessin sekä metodien ja kirjoittamisen syiden tutkimiseen ja kuvaamiseen. Lisäksi esille nousevat muun muassa rocklyriikan suhde muihin kirjallisiin lajeihin sekä rock-kulttuurin maskuliinisuus ja sen vaikutus rocksanoituksiin. Tutkimusmenetelmänä käytetään teemahaastattelua. Haastateltavina on viisi suomenkielisten rocksanoitusten kirjoittajaa, joista kaikki ovat miehiä ja yhtä lukuun ottamatta 25–31-vuotiaita. Haastateltaville ei asetettu muita ehtoja kuin suomenkielisten sanoitusten kirjoittaminen.…

The Joint Distribution Criterion and the Distance Tests for Selective Probabilistic Causality

2010

A general definition and a criterion (a necessary and sufficient condition) are formulated for an arbitrary set of external factors to selectively influence a corresponding set of random entities (generalized random variables, with values in arbitrary observation spaces), jointly distributed at every treatment (a set of factor values containing precisely one value of each factor). The random entities are selectively influenced by the corresponding factors if and only if the following condition, called the joint distribution criterion, is satisfied : there is a jointly distributed set of random entities, one entity for every value of every factor, such that every subset of this set that corr…