Search results for "dati"

Study of morphology, mechanical properties and thermal degradation of titania-polycarbonate nanocomposites as function of crystalline phase and amount

2013

Titania nanoparticles were prepared using a sol–gel method and calcination at 2008C and 6008C to obtain anatase and rutile phases, respectively. The obtained powders were used to prepare polycarbonate (PC)-titania nanocomposites by melt compounding. The effect of different crystalline phases and amounts of titania, in the range 1–5 wt%, on the morphology, mechanical properties, and thermal degradation kinetics of PC was investigated. The results show that the filler modified the plasticity or rigidity of the polymer and influenced the degradation kinetics, in different ways depending on the type and amount of titania.

Photocatalytic partial oxidation of propylene in the presence of mesoporous organosilane-modified titanias

2014

Photolytic and TiO2-Assisted Photodegradation of Aqueous Solutions of Tetracycline

2004

Aqueous solutions of tetracycline were UV-irradiated in homogeneous and heterogeneous systems. Tetracycline disappeared in both systems, but the presence of TiO2 accelerated the photodegradation of the antibiotic in comparison with direct photolysis. The rate of decomposition was dependent on the concentration of tetracycline and its degradation on the surface of TiO2 can be described by means of a pseudo-first order kinetics. Photolysis involved only the photodeamination of tetracycline and a partial mineralization. Unlikely, the treatment with TiO2 and UV-light resulted in a complete mineralization of the antibiotic drug.

On research work in information systems: Guidelines, recommendations and examples

2021

The most positive aspect of science is that the participants (researchers, reviewers and editors) control and evaluate their work themselves. Therefore they must be supported in one way or another. Fortunately, guidelines have been developed for different methodologies. However, today the guidelines are not very applicable. The first two sets of guidelines published (both positivist studies) had unusual problems. In this work, we analyze and improve the guidelines generally. Previously, selecting a methodology was the task of every researcher. It now seems that every researcher must also conduct a literature review and write a report. We consider methodology, literature review and writing "…

The role of motor system in action-related language comprehension in L1 and L2: An fMRI study

2018

The framework of embodied cognition has challenged the modular view of a language-cognition divide by suggesting that meaning-retrieval critically involves the sensory-motor system. Despite extensive research into the neural mechanisms underlying language-motor coupling, it remains unclear how the motor system might be differentially engaged by different levels of linguistic abstraction and language proficiency. To address this issue, we used fMRI to quantify neural activations in brain regions underlying motor and language processing in Chinese-English speakers’ processing of literal, metaphorical, and abstract language in their L1 and L2. Results overall revealed a response in motor ROIs …

New is not always costly: evidence from online processing of topic and contrast in Japanese.

2013

Two visual ERP experiments were conducted to investigate topic and contrast assigned by various cues such as discourse context, sentential position and marker during referential processing in Japanese. Experiment 1 showed that there was no N400-difference for new vs. given noun phrases (NPs) when the new NP was expected (contrastively focused) based on its preceding context and sentential position. Experiment 2 further revealed that the N400 for new NPs can be modulated by the NP’s contrastive meaning (exhausitivity) induced from the marker. Both experiments also showed that new NPs engendered an increased Late Positivity. The reduced N400 for new vs. given supports an expectation-based lin…

Sex differences in food choices, adherence to dietary recommendations and plasma lipid profile in type 2 diabetes

2016

Background and aims Diabetic women have a more adverse plasma lipid profile than men. Sex differences in dietary habits may play a role, but are little investigated. The study evaluates the quality of diet, adherence to the nutritional recommendations of the Diabetes and Nutrition Study Group and their relation with plasma lipid in men and women with diabetes. Methods and results We studied 2573 people, aged 50–75, enrolled in the TOSCA.IT study (clinicaltrials.gov; NCT00700856). Plasma lipids were measured centrally. Diet was assessed with a semi-quantitative food frequency questionnaire. Women had a more adverse plasma lipid profile than men. Women consumed significantly more legumes, veg…

Mitä tänään blogattaisiin? : hyvinvointiblogien sisällöt ja niiden luotettavuus tietolähteenä

2017

Tämän pro gradu –tutkielman tarkoitus oli selvittää, millaisia ravintoon ja fyysiseen harjoitteluun liittyviä teemoja hyvinvointiblogeista nousee esille ja minkälaisia blogin kirjoittajien eli bloggaajien antamat ohjeet ravinnosta ja harjoittelusta ovat suhteessa tämänhetkisiin suosituksiin ja kirjallisuuteen. Tutkimuksen aineisto koostui kolmen suositun bloggaajan kirjoittamista blogiteksteistä kuukauden ajalta (syyskuu 2015). Tutkimus on laadullinen tutkimus, jossa aineisto käsiteltiin sisällönanalyysillä. Analyysin tuloksia suhteutettiin annettuihin terveyssuosituksiin ja kirjallisuuteen tutkijan vertailun avulla. Tutkimuksen aineistosta löydettiin kolme pääluokkaa: asiantuntijuuspuhe, k…

Comparison of wormlion behavior under man-made and natural shelters: urban wormlions more strongly prefer shaded, fine-sand microhabitats, construct …

2019

Abstract Urban habitats differ from their natural surroundings in various aspects, such as a higher temperature and a distinct species composition. It is therefore not surprising that animal behavior too differs between these habitat types. We studied the foraging and habitat selection behavior of a pit-building predator, a wormlion, originating from either an urban or a more natural site. Wormlions occur in nature under structures that provide shelter from sunlight and rain, such as caves, and are also common in cities, occurring under artificial shelters. Wormlions construct pit-traps to hunt arthropods, and the pits constructed by urban wormlions were larger than those constructed by wor…

PRIVACY E RAPPORTI DI LAVORO

2022

L'A. esamina da un punto di vista critico la recente disciplina del trattamento dei dati personali dei lavoratori mettendone in luce gli aspetti più significativi di modifica del sistema dopo l'entrata in vigore del reg. UE 2016/679 del Parlamento europeo e del Consiglio, del 27.4.2016, “relativo alla protezione delle persone fisiche con riguardo al trattamento dei dati personali, nonché alla libera circolazione di tali dati e che abroga la direttiva 95/46/CE (Regolamento generale sulla protezione dei dati)”. Il riferimento è in particolare alla dimensione nazionale nel cui ambito il recepimento della normativa eurounitaria è avvenuto con il d.lgs. 10.8.2018, n. 101