Search results for "MAS"
showing 10 items of 18047 documents
Preliminary Investigation of Biogenic Amines in Type I Sourdoughs Produced at Home and Bakery Level
2022
During a survey for isolating sourdough lactic acid bacteria (LAB), 20 dough samples produced at the bakery level (BL) or home-made (HM) were collected. An enzyme-based colorimetric method revealed a total biogenic amines (BAs) concentration in the range 41.4–251.8 ppm for six (three BL and three HM) sourdoughs characterised by unpleasant odours. Eight BAs generally investigated in foods were identified and quantified from these six samples by ultra-high performance liquid chromatography tandem mass spectrometry (UHPLC–MS/MS). Only one HM sample contained almost all analysed BAs. Tryptamine was exclusively detected in HM sourdoughs (0.71–24.1 ppm). Putrescine, tryptamine, …
Submarine Slope Failures Along the Northern Sicilian Continental Margin (Southern Tyrrhenian Sea) and Possible Implications for Geo-Hazard
2013
Mass wasting and downslope movements are common processes that have contributed to shape the northern Sicilian continental margin (southern Tyrrhenian Sea) since the Late Quaternary. Nevertheless, processes controlling their evolution are still partially unknown and a variety of geologic factors can be responsible for their formation. In this work we present an overview of the main mass wasting features (submarine canyons, landslides, debris flows) observed and mapped in different sectors of the northern Sicilian margin. The margin is characterized by a narrow, steep continental shelf (1-2°) and a very irregular and steep (6-8°) upper slope. The main aims of this work are: (1) to outline th…
Participation in Social Media: Studying Explicit and Implicit Forms of Participation in Communicative Social Networks
2016
The diverse forms of participation in social media raise many methodological and ethical issues that should be acknowledged in research. In this paper, participation in social media is studied by utilising the framework of explicit and implicit participation. The focus is on the communicative and communal aspects of social media. The aim of the paper is to promote the reconsideration of what constitutes participation when online users create connections rather than content. The underlying argument is that research on social media and the development of methods should concentrate more on implicit forms of participation.
Ultra Reliable Communication in 5G Networks: A Dependability-based Availability Analysis in the Space Domain
2017
Master's thesis Information- and communication technology IKT591 - University of Agder 2017 As our daily life is becoming more dependent on wireless and mobile services, seamless network connectivity is of utmost importance. Wireless networks are expected to handle the growing demand for applications which require higher capacity, without failure. Therein, wireless connectivity is regarded as an essential requirement for a wide range of applications in order to support exible and cost-e ective services. As part of the fth generation (5G) communication paradigm, ultra reliable communication (URC) is envisaged as an important technology pillar for providing anywhere and anytime services to en…
Architettura e urbanistica, presupposti e partecipazione
2012
In analysing the relationship between architecture and urban planning, this paper starts from Leonardo Benevolo’s declaration (in 1963) that defines the latter as “a part of politics required to concretize each operational program”. So, while waiting for the long expected reform, urban planning – once as well as today – needs a complete overhaul to get a better understanding of its role and relationship with politics. The other reference is to one of the founders of this field of research, Patrick Geddes, and his definition of “civic science” (1915). This allows us to stress how modern Geddes’ urban and social planning was. The subject is analysed at its various historical stages, and the m…
Pd2Au36(SR)(24) cluster: structure studies
2015
The location of the Pd atoms in Pd2Au36(SC2H4Ph)(24), is studied both experimentally and theoretically. X-ray photoelectron spectroscopy (XPS) indicates oxidized Pd atoms. Palladium K-edge extended X-ray absorption fine-structure (EXAFS) data clearly show Pd-S bonds, which is supported by far infrared spectroscopy and by comparing theoretical EXAFS spectra in R space and circular dichroism spectra of the staple, surface and core doped structures with experimental spectra.
Charge radius changes of even-even neutron-rich Tellurium isotopes
2005
Laser spectroscopy based on resonant ionization of laser-desorbed atoms has been used to study the neutron-rich tellurium isotopes with the COMPLIS facility at ISOLDE-CERN. The isotope shift and the hyperfine structure of several neutron-rich Te isotopes: $^{120–136}$Te and $^{123m–133m}$Te have been measured. From the hyperfine structure and the isotope shift we can extract the magnetic and quadrupole moments and the change in the mean square charge radius respectively. The mean square charge radii of the even-even isotopes have been deduced and their comparison with the known data for the other elements near Z=50 is presented. The experimental $\delta$ is compared with that obtained from …
Octopus, a computational framework for exploring light-driven phenomena and quantum dynamics in extended and finite systems
2020
Over the last few years, extraordinary advances in experimental and theoretical tools have allowed us to monitor and control matter at short time and atomic scales with a high degree of precision. An appealing and challenging route toward engineering materials with tailored properties is to find ways to design or selectively manipulate materials, especially at the quantum level. To this end, having a state-of-the-art ab initio computer simulation tool that enables a reliable and accurate simulation of light-induced changes in the physical and chemical properties of complex systems is of utmost importance. The first principles real-space-based Octopus project was born with that idea in mind,…
FIFAn valtapeli : Etelä-Afrikan jalkapallon MM-kisat 2010 keskitettynä mediaspektaakkelina
2014
Nykyisiä miesten jalkapallon MM-kisoja voi kutsua keskitetyiksi mediaspektaakkeleiksi. Ne ovat myös merkittäviä vallankäytön areenoita. Kansainvälinen jalkapalloliitto, kisaisäntä ja televisio muodostavat jalkapallon MM-kisojen tuotanto- ja valtakoneiston. Miten valta toimii jalkapallon MM-kisoissa? Millaisia strategioita valtakoneistolla on rakenteiden uusintamiseksi ja omien etujensa ja intressiensä edistämiseksi? Mitä valta tekee näkyväksi ja mitä se jättää näkymättömäksi? FIFAn valtapeli on Suomen ensimmäinen väitöskirjatason tutkimus jalkapallon MM-kisoista. Se tarkastelee vuoden 2010 Etelä-Afrikan kisoja tuotantokoneiston näkökulmasta kriittisesti, monitieteellisesti ja erilaisia aine…
Dažādu mikroorganismu adhēziju eksperimentāls pētījums, izmantojot silīcija dioksīda mikrodaļiņas
2018
Ievads: Katru gadu parādās jaunas tehnoloģijas un jaunas metodes mikroorganismu diagnostikā un diferencēšanā. Zinātnei attīstoties, šīs metodes kļūst arvien ātrākas un precīzākas. Precīza un ātra mikroorganismu noteikšana ir ļoti svarīga mūsdienu medicīnā, lai varētu efektīvi izvēlēties empīrisko terapiju un mērķterapiju. Pētījuma mērķis: Pētījuma mērķis ir noskaidrot, vai spektrofotometrija ir efektīvs un ātrs veids kā atšķirt mikroorganismus. Materiāli un metodes: Tika veikts prospektīvs pētījums, kura laikā ar spektrofotometru tika analizētas 4 sēnītes, 5 Gram pozitīvas baktērijas un 8 Gram negatīvas baktērijas ar un bez silīcija dioksīda mikrodaļiņām. Spektrofotometra izmērītās absorbci…