Search results for "Solid"
showing 10 items of 3575 documents
European comission's identity during brexit : a communication strategy change on twitter
2021
The European Union (EU) was founded to promote peace, prosperity and other values between an increasing number of member states (European Commission, 2001). However, Brexit has activated a reputation crisis that reinforces Euroscepticism (Borzel; Risse, 2018). The objective of the study is to identify the differences in the semantic construction and thematic framing of the European Commission during a two-year period, previous to Brexit and after Brexit, on a sample of 4827 tweets posted by the European Commission. Findings show that in the period before Brexit, the EU is presented as an abstract political body, highly informative on major crisis, and reactively framing messages with values…
Il muro di Padova: un muro di solida paura
2009
Il muro di Padova: un muro di solida paura - The Padua Wall: a Wall of Solid Fear, If there is a lucky relevance in the concept of liquid fear, it is the physical image of what, not having a solid content, slides over, trickles through chinks and floods any surface that comes across. If applied to a specific case, the concept materialises in its solid ambivalence. In the Padua case under examination, the municipality makes the choice, explosive from a communication perspective, to par8 tially isolate - with an iron fence, the so-called wall - an inhabited area, considered out of control because of the growing flow of regular and irregular immigrants, of crime episodes, of drug dealing, of a…
Consolidated challenge to social demand for resilient platforms : Lessons from Uber's global expansion
2017
Many in the industry see the ride-sharing company Uber as the significant advancement through information and communication technology (ICT) particularly of the digital service platform and sharing economy. Uber has been exploring the new frontier of the ICT-driven disruptive business model (IDBM) and succeeded in its global expansion to over 479 cities in more than 75 countries worldwide in June of 2016. Such rapid expansion provides constructive insights regarding the significance of IDBM, not only in transportation but also in almost all other business fields. While at the same time Uber's legal battles in some cities around the world raise a serious question regarding the rationale of I…
Eiropas Solidaritātes korpuss: Latvijas jauniešu izaugsmes iespējas
2018
Darba nosaukums ir “Eiropas Solidaritātes Korpuss: Latvijas jauniešu izaugsmes iespējas”. Bakalaura darba mērķis ir “noskaidrot, kāda ir jauniešu praktiskā pieredze Eiropas Solidaritātes korpusa līdzdalībā un kā jaunieši apzinās Eiropas Solidaritātes korpusa iespējas”. Darba teorētiskās analīzes izstrādē izmantota Dirkema solidaritātes teorija, kā arī jauniešu nodarbinātības un brīvprātīga darba specifika. Darbā tiek pielietota jauktā pētījuma metodoloģija. Empīriskajā izpētē izmantota tiešsaistes aptauja, nestrukturētas un daļēji strukturētas intervijas. Tika noskaidrots, ka mēreni aktīvie jaunieši NVO, jaunieši ar iepriekšēju saskarsmi ar Eiropas Brīvprātīgo darbu, kā arī jaunieši ar vidu…
Sociālais darbinieks kā starppaaudžu solidaritātes veicinātājs kultūras programmu organizēšanā
2020
Pētījuma tēma ir “Sociālais darbinieks kā starppaaudžu solidaritātes veicinātājs kultūras programmu organizēšanā”. Pētījuma mērķis ir iztirzāt sociālā darbinieka dalību starppaaudžu solidaritātes veicināšanā, organizējot kultūras pasākumus ilgstošas sociālās aprūpes un sociālās rehabilitācijas institūcijās. Pētījuma teorētiskā bāze balstās uz lomu teoriju un ekosistēmisko teoriju sociālā darba kontekstā, kā arī uz starppaaudžu solidaritātes skaidrojumu, izmantojot sešu elementu starppaaudžu solidaritātes modeli. Pētījums ir kvalitatīvs gadījuma pētījums, kurā kā datu vākšanas metodes izmantotas daļēji strukturētas intervijas un ekspressintervijas. Pētījuma empīriskajā daļā tiek veikta inter…
Effectiveness of a new method of disinfecting the root canal, using Er, Cr:YSGG laser to kill Enterococcus faecalis in an infected tooth model.
2013
Some lasers have demonstrated to provide effective disinfection when used as adjunctive device to the conventional treatment. The aim of this in vitro study was to determine the effectiveness of the erbium, chromium:yttrium scandium gallium garnet (Er, Cr:YSGG) laser by measuring its bactericidal effect inside the root canal experimentally colonized with Enterococcus faecalis. The laser was tested at different irradiation times (30 and 60 s) and energy of impulses (75 and 25 mJ). A total of 52 single-rooted extracted human teeth were endodontically prepared with rotary instrumentation. All were sterilized and inoculated with a suspension of E. faecalis (105 bacteria/ml). The teeth were rand…
Determination of benzomercaptans in environmental complex samples by combining zeolitic imidazolate framework-8-based solid-phase extraction and high…
2020
[EN] In this work, the synthesis of zeolitic imidazolate framework-8 (ZIF-8) crystals and their subsequent application as effective sorbents for extraction and preconcentration of several benzomercaptans from environmental complex samples is described. These materials were prepared by solvothermal approach varying the concentration of n-butylamine modulator to modify the surface of the metal-organic framework. The resulting materials were characterized by scanning and transmission electron microscopy, powder X-ray diffraction and Fourier transform infrared spectroscopy. The ZIF-8 material that gave the best features was selected as extractive phase and the influence of various parameters (s…
Arc and forearc rifting in the Tyrrhenian subduction system
2022
The evolution of forearc and backarc domains is usually treated separately, as they are separated by a volcanic arc. We analyse their spatial and temporal relationships in the Tyrrhenian subduction system, using seismic profiles and numerical modelling. A volcanic arc, which included the Marsili volcano, was involved in arc-rifting during the Pliocene. This process led to the formation of an oceanic backarc basin (~ 1.8 Ma) to the west of the Marsili volcano. The eastern region corresponded to the forearc domain, floored by serpentinised mantle. Here, a new volcanic arc formed at ~ 1 Ma, marking the onset of the forearc-rifting. This work highlights that fluids and melts induce weakening of…
Continental degassing of helium in an active tectonic setting (northern Italy): the role of seismicity
2020
AbstractIn order to investigate the variability of helium degassing in continental regions, its release from rocks and emission into the atmosphere, here we studied the degassing of volatiles in a seismically active region of northern Italy (MwMAX = 6) at the Nirano-Regnano mud volcanic system. The emitted gases in the study area are CH4–dominated and it is the carrier for helium (He) transfer through the crust. Carbon and He isotopes unequivocally indicate that crustal-derived fluids dominate these systems. An high-resolution 3-dimensional reconstruction of the gas reservoirs feeding the observed gas emissions at the surface permits to estimate the amount of He stored in the natural reserv…
Volatile profiles of Sicilian prickly pear (Opuntia ficus indica) by SPME-GC/MS analysis
2005
The aroma compounds present in the headspace of homogenized slurries of fresh prickly pears (Opuntia ficus-indica) from Sicilian cultivars were determined. Solid Phase Microextraction (SPME) followed by Gas-chromatography/Mass Spectrometry (GC/MS) analysis was used to characterize the volatile compounds. The volatile flavour profiles of the three cultivars investigated (red, white and yellow) showed significant differences. The aromatic profile of peeled prickly pears stored for one day was different from the one of the fresh samples, mainly due to the occurrence of some oxidative and hydrolytic reactions