802 research outputs found
Deformational response of a marine silty-clay with varying organic content in the triaxial compression space
No full textThis study characterises the effects of naturally varying organic content on the compression and shear behaviour of a marine silty-clay from the Netherlands. Index properties and mechanical properties are determined through laboratory tests, including oedometer and multistage loading-unloading triaxial stress paths. The results indicate a significant impact of the organic content on the compression response, with both the loading and reloading indexes increasing as the loss on ignition increases from 3% to 7%. Additionally, the study suggests a directional response of the compression behaviour, with the loading index increasing with the stress ratio. The influence of the organic content on shear strength appears to be less significant. No brittle response is observed during shearing and a similar ultimate stress ratio is attained by all samples. However, a unique critical state line can only be identified for samples with similar organic content, as its intercept and slope are found to increase with increasing organic content. The experimental results from stress paths at constant stress ratio reveal an anisotropic pre-failure plastic deformation mode, which depends on the previous stress history and loading direction. This suggests that the stress-dilatancy relationship cannot be formulated as a unique function of the stress ratio. The high-quality experimental data presented in the paper enlarge the database on soft organic soils in view of the development of advanced constitutive models.Accepted Author ManuscriptGeo-engineerin
SiC Foams Decorated with SnO2 Nanostructures for Room Temperature Gas Sensing
No full textSberveglieri, Giorgio/0000-0003-0080-8117; Ponzoni, Andrea/0000-0001-9955-5118; Comini, Elisabetta/0000-0003-2559-5197; Vakifahmetoglu, Cekdar/0000-0003-1222-4362Cell walls of the commercial silicon carbide (SiC)-based foams were decorated by one-dimensional tin dioxide (SnO2) nanostructures. Thermal evaporation of SnO2 powder with the assistance of a Au catalyst in inert atmosphere caused the formation of SnO2 nanobelts on the pore surfaces. The room temperature (RT) ammonia (NH3) and nitrogen dioxide (NO2) gas sensing behaviors were investigated systematically in both dry and humid air atmosphere with/without UV activation. The results were compared to those for bare SnO2 and SiC. It was shown that SiC/SnO2 composite was efficient to detect low concentration of NH3 (10-50 ppm) and NO2 (1-5 ppm) under humid air and UV activation at RT.TUBITAK (The Scientific and Technological Research Council of Turkey)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [CAYDAG-113Y533]The author wishes to express sincere appreciation to Prof. Gian Domenico Soraru and his team in University of Trento for the N2 adsorption and desorption data. C. V. gratefully acknowledge the support of TUBITAK (The Scientific and Technological Research Council of Turkey) under the project Grant No. CAYDAG-113Y533
New findings about Matej Ponzoni-Pončaun
No full textOltarnu palu »Sv. Mihovil s dušama čistilišta, sv. Ivanom Krstiteljem, sv. Benediktom i Bogom Ocem« iz crkve sv. Mihovila u Trogiru autor pripisuje slikaru Mateju Ponzoniju-Pončunu (Venecija, 1583-izmedu 1663. i 1675.}. Nastala je za vrijeme njegova boravka u Splitu tridesetih godina 17. stoljeća. Piše se i o Pončunovu portretu pape Urbana VIII u splitskoj katedrali koji je mogao nastati prema portretu kojega je izradio Pietra da Cortone (1597-1669.) izmedu 1624. i 1627. godine.The painting »St. Michael with St. Benedict and John the Baptist« which used to stand on the main altar in the destroyed church of St Michael's of the Benedictine monastery in Trogir is published. The altarpiece is attributed to the painter Matej Ponzoni-Pončaun (Venice 1583 - between 1663 and 1675), dated in the period when the artist was in Dalmatia (the 1640s) and compared to his other works in Trogir.
The article discusses Pončaun's portraits of Pope Paul V Borghese and Urban VIII Barberini in the Split Cathedral and suggests that they may have both been painted from the prints of his subjects. The portrait of Pope Urban VIII Ponzoni may have used the copy of the Pope's portrait which was made between 1624. and 1627. by Pietro da Cortona (Rome, Pinacoteca Capitolina)
Determination of water retention properties of silty sands by means of combined commercial techniques
No full textA recent increase in frequency and severity of exceptional climatic events is of concern for the stability of natural and artificial slopes. These undergo continuous evaporation and infiltration cycles, which change the suction distribution and trigger shrinkage, swelling, cracking, and surfi-cial erosion, overall decreasing the soil strength. To assess the impact of these climatic stresses, the determination of water retention properties is a priority. Although advanced techniques have been proposed in the last few decades to this end, simpler commercially available techniques allow col-lecting data for a larger number of samples in a shorter time, thus enabling a basic description of the water retention properties for a larger database of soils. Data on two silty sands, coming from very different climatic environments in Europe, were collected with a combination of two simple commercial devices, and the results were modelled with a van Genuchten’s law. The fitted pa-rameters were found to correlate well with the amount of fines, irrespective of the different origin and composition of the two soils. Eventually, the limitation of the approach is discussed based on the results of cyclic drying–wetting tests.</p
THE ALTERPIECE OF THE ST. HYACINTH BY PONZONI (?) IN KORCULA
No full textAutor publicira oltarnu palu sv. Jacinta iz Opatijskog muzeja u Korčuli, koja potječe iz crkve Gospe od zaćeća u istom gradu. Uz centralni prikaz ukazanja Bogorodice dominikanskom svecu poljskog porijekla, u dvanaest manjih polja prikazani su prizori iz svečeva života. Autor pripisuje sliku dalmatinskom slikaru Matiji Ponzoniju - Pončunu (1586- nakon 1663), učeniku Palme ml. i Santa Perande koji je djelovao u Veneciji i Friuliju, a povremeno i u svojoj domovini. Publicirano djelo autor datira četvrtim desetljećem 17. stoljeća, kada je umjetnik djelovao u DalmacijiThe author discusses the altarpiece of St. Hyacinth in the Abbey Museum in Korčula, brought from the Church of Our Lady of Conception in the same town. The central part presents the revelation of the Virgin to a Dominican saint of Polish origin and the twelve smaller parts depict scenes from the saint's life. The work is attributed to s Dalmatian painter, Matija Ponzoni - Pončun (1586 - later than 1663), a disciple of Palma the Younger and Santa Peranda, who worked in Venice and Friuli and occasionally in his native country. The painting probably dates from the 1640's, when the artist was working in Dalmatia
Emotion dysregulation acts in the relationship between vulnerable narcissism and suicidal ideation
No full textSuicide behaviors are peculiar aspects of several cluster B disorders, including Narcissistic Personality Disorder. To date, it is still unclear which facet of narcissism is more related to the desire to die and which other factors are involved in this relationship. This study aims to offer preliminary empirical evidences concerning the relationship between narcissism, emotion dysregulation and suicide ideation. We administered the Pathological Narcissism Inventory (PNI), Difficulties in Emotion Regulation Scale (DERS), PID-5-BF (Personality Inventory for DSM-5-Short Form) and Beck Scale for Suicide ideation (BSI) to a sample of individuals with suicide ideation (n = 70) and a sample of community participants (n = 154). Controlling for age, gender and Negative Affectivity, we found that BSI scores correlated significantly with the vulnerable dimension of narcissism, but not with the grandiose one, and with all DERS dimension, apart from Awareness. Nevertheless, emotion dysregulation moderates the relationship between vulnerable narcissism and suicide ideation. Suicide ideation seems to be deeply connected with the vulnerable dimension of pathological narcissism and the relationship between the constructs is totally mediated by emotion dysregulation. Future directions and clinical implications are discussed
TIME RESOLVED OPTICAL MEASUREMENTS ON CARBON NANOTUBES STRUCTURES FOR PHOTOVOLTAIC APPLICATIONS
No full textWith their intriguing electronic and optical properties carbon nanotubes are promising materials for future optoelectronics and photovoltaic applications. Recently single walled (SWCNT) and multi walled carbon nanotubes (MWCNT) aggregates were employed in hybrid solar cells . Despite the promising results the photoexcited carriers behavior in these novel devices is not fully understood . In this thesis, using ultrafast time-resolved optical spectroscopy, we investigate the carriers relaxation dynamics in various SWCNT and MWCNT architectures with potential photovoltaic applications. In particular, using time resolved transient reflectivity, we detect the signature of the charge transfer process taking place at the interface of a SWCNT / n-doped Silicon heterojunction solar cell on a few picosecond time scale
Industrial design museums: innovations in contents and strategies
No full textOften hidden by the widespread well-known traditional works of art such as paintings and sculptures, applied arts are now target of collecting and exhibiting. Most of all, design seems to have assumed the dignity of thematic shows and museums of design are now opening all over the world.
Design Museums exhibit collections of famous designers, stylists and firms. The supply chain of brands could find a show in the Museum Rooms. Industrial Museums pre-exist to Design Museums, representing the natural location of the history of supply chains. Both, Design and Industrial Museums are attracting new visitors, who appreciate applied arts and would like to experience a “creative visiting”.
There is a huge variety of Industrial Museums in Europe and in Italy. There are museums owned by the firms themselves; others are managed by foundations or associations. There are museums that highlight their building’s architecture, creating or re-thinking a Landmark (Negri M., 2005), while others show their collection in a simple office. These Museums’ communication and fundraising strategies, networking and partnership policies are changing and they are getting on with own standards (Hausmann A., 2007; Bourgeon-Renault D., Gombault A., 2005; Beverly Thompson J., 2005; Lidstrom B., 2004; Preece S. B., 2004).
The aim of the paper is the investigation of strategies of Industrial Museums and Museums of Applied Arts and Design. How do they transform industrial concepts in museum concepts and manage them? What about their marketing, fundraising, teaching and merchandising? What their use of Internet and e-marketing? The analysis will be focused on European and Italian Museums.
In the first paragraph it will be introduced the concept of design, Museum of design and the meaningfulness of marketing in this museum. In the second paragraph there will be an analysis of industrial museums, of typical Italian Made in and brands. In the third paragraph there will be an analysis of the Triennale Foundation, the most famous Design Museum nowadays in Italy, in the fourth paragraph, web potentials of European and Italian design museums will be compared with cluster analysis
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