Il Fotocollage tra arte e terapia

“Dissociate and associate”. Sabine Korth’s credo in life and work Photo collage, an artistic language and a precious tool for the self-inquiry: act, com- bine, match, eliminate, get involved, produce and let yourself be carried away deliber- ately by the creative flow A transformative journey” by Alessandra Manca Photo Collage in group work: a voyage and a simple and immediate tool. It reveals, through the creative stimulus, in an inherent and underlying way, unique options and skills: combines, superimposes and creates links between one’s own narrative and that of the other

Visitors’ satisfaction and perceived affective qualities towards museums: the impact of recreational areas

Questo studio indaga il ruolo svolto dai fattori ambientali sulla valutazione di una visita al museo da parte degli utenti. È stata condotta un’indagine empirica per rilevare la soddisfazione dei visitatori e la valutazione dell'esperienza museale, con un'attenzione particolare alle aree ricreative (negozio di souvenir e ristorante/bar). Un campione di 160 visitatori di due musei di Roma (50% italiani e 50% madrelingua inglese) ha completato un questionario comprendente scale sulle qualità affettive dei luoghi (Russell & Pratt, 1980), sulla soddisfazione e sulle motivazioni della visita. I risultati hanno mostrato che le aree ricreative, in particolare il negozio di souvenir, facilitano la creazione di una relazione positiva tra il visitatore e l'ambiente museale. La valutazione degli utenti è stata anche associata a differenze linguistiche e relative alle motivazioni alla base della visita.This study investigates the role played by environmental factors on users’ evaluation of a museum visit. An empirical research was carried out to detect visitors’ satisfaction and assessment of museum experience, with a special focus onto its recreational areas (i.e., gift shop and restaurant/cafeteria). A sample of 160 visitors of two museums of Rome (50% Italians and 50% English mother tongue) completed a questionnaire including scales on affective qualities of places (Russell & Pratt, 1980), satisfaction towards the visit, and motives for the visit. Results showed the relevance of recreational areas, especially the gift shop, in facilitating the creation of a positive relationship between the visitor and the museum environment. Users’ assessment was also associated to differences in visitors’ mother tongue, age, educational level and motives underlying the visit

Struttura di popolazione di vongola verace (<i>Ruditapes decussatus</i> l.) in due lagune costiere della Sardegna = Population structure of carpet shell clam (<i>Ruditapes decussatus</i> l.) in two coastal lagoons of Sardinia (Italy)

Ruditapes decussatus L. (Bivalvia) is a traditional resource for fishing activity in Sardinia Island. This species is not cultured, but fishermen pick them up from the bottom of brackish areas. The distribution and the population structure of R. decussatus were investigated in two coastal lagoons: S. Giovanni (CA) and Calich (SS). The samplings were performed seasonally from autumn 2008 to summer 2009

Local Thermal Non-Equilibrium Investigation on Natural Convection in Horizontal Channel Heated from Above and Partially Filled with Aluminum Foam

Abstract The configuration of two horizontal parallel walls, with heated upper plate and open cavities, gets considerable attention in many thermal engineering applications. In this work, a numerical investigation on steady state natural convection in a horizontal channel partially filled with a porous medium and heated at uniform heat flux from above is carried out. The local thermal non-equilibrium (LTNE) hypothesis is invoked. A three-dimensional model is realized and solved by means of the ANSYS-FLUENT code. Results are presented in terms of velocity and temperature fields and profiles, and they show that the use of porous medium improves the heat transfer in the channel due to the aluminum foam high conductivity

Thermal behavior evaluation of ventilated roof under variable solar radiation

A ventilated roof has a good configuration for energy purposes, in order to respect the European Directive priority for building performance requirement to reduce energy consumption. In Mediterranean regions, with high level of solar radiation, the roof design should respect comfort and energy saving, considering that climatic conditions change depending on seasons and territories. This paper illustrates a numerical investigation on a prototypal ventilated roof for residential use, in order to evaluate its thermofluidodynamic behaviors as a function of the solar radiation applied on the top wall of the roof simulating summer and winter conditions. The roof is modeled as a single side and it is analyzed as two-dimensional, in air flow, thanks to the commercial code Ansys-Fluent. Results are given in terms of temperature and pressure distributions, air velocity and temperature profiles along longitudinal and cross sections of the ventilated layer, in order to estimate the differences between the various conditions. Ventilated roof configuration results significant to reach optimal thermal and hygrometric conditions in summer and winter conditions

RADIATION EFFECT ON TRANSIENT NATURAL CONVECTION IN VENTILATED ROOFS

This paper illustrates a numerical investigation on a prototypal ventilated roof for residential use, under summer and winter conditions. The roof is modeled as a single flap, due to its geometric and thermal symmetry, and it is analyzed as two-dimensional, in air flow, thanks to the commercial code Ansys-Fluent. The governing equations are given in terms of k-\uf065 turbulence model taking into account the radiation effect inside the channel. The analysis is performed in order to evaluate thermofluidodynamic behaviours of the ventilated roof, in transient regime with radiative heat transfer presence, as a function of the solar radiation applied on the top wall of the ventilated roof. The discrete transfer radiation model (DTRM) is chosen. Typical summer and winter conditions with heat transfer from the channel top wall toward the external ambient are examined. The bottom wall of the ventilated channel is simulated as isothermal, considering optimal temperature values for the internal ambient in summer and winter regimes. Results are given in terms of temperature and pressure distributions, air velocity and temperature profiles along longitudinal and cross sections of the ventilated layer, in order to estimate the differences between the various conditions. Ventilated roof configuration results significant to reach optimal thermal and fluid dynamic conditions in summer and winter regimes. In summer period, when the effect of solar radiation is more evident thanks to the convective effect within the channel, temperature values are higher and the effect of the ventilated channel is significative to reach comfort conditions. In winter, the effect of the ventilated layer is very important to reach optimal thermal and hygrometric conditions

Thermal behavior evaluation of ventilated roof under summer and winter conditions

One of the European Directive priorities is the development of new strategies for \u201cvery low energy buildings\u201d. In regions with high level of solar radiation, ventilation allows the cooling load during summer period and contributes to the reduction of the energy needs of buildings. The most important advantages are the reduction of the heat fluxes transmitted by the structures exposed to solar radiation, thanks to the combined effect of shading surfaces and heat removed by the air flow rate within the ventilated air gap. This paper illustrates a numerical investigation on a prototypal ventilated roof for residential use. The investigation is performed in order to evaluate thermofluidodynamic behaviors of the ventilated roof as a function of the different conditions applied on the top wall and the bottom wall of the ventilated cavity in summer and winter regimes. Different values of heat fluxes are applied on the top wall of the ventilated cavity to simulate typical summer and winter days conditions, whereas the bottom wall is assumed isothermal and different values of wall temperature are considered. The problem is solved by means of the commercial code Ansys-Fluent. Results are given in terms of temperature and velocity distributions, air velocity and temperature profiles along different longitudinal and cross sections of the ventilated layer in order to estimate differences between analyzed conditions

A Case of thyroid metastasis from pancreatic cancer: case report and literature review

Background: Thyroid metastases are clinically rare, and usually occur in patients with a history of prior malignancy and when there are metastases elsewhere. Metastases of pancreatic carcinoma to the thyroid are extremely rare, with only three cases reported in the literature. Case presentation: We report a patient who had a pancreatic carcinoma with metastasis to the thyroid as initial clinical presentation of the disease. A 63-year-old man with a history of weight loss and fatigue presented with cervical lymphadenopathies and a large nodule in the right lobe of the thyroid. A fine needle aspiration of the nodule gave inconclusive cytological results for the origin of the neoplastic cells. An ultrasound-guided core biopsy revealed the presence of a poorly differentiated adenocarcinoma infiltrating the thyroid with atrophic thyroid follicles. Immunohistochemical staining of the lesion was strongly positive for Cytokeratin 19 suggesting a pancreatic origin of the metastasis. A contrast CT scan demonstrated an enlargement of the pancreatic body, dilatation of the pancreatic duct, diffuse retroperitoneal, paraaortic and cervical lymphadenopathy and secondary lesions in the liver. Conclusion: Metastases to the thyroid from pancreatic carcinoma are extremely rare. A core biopsy of the lesion excluded a thyroid carcinoma and permitted the diagnosis of the primary neoplasm

Carbon partitioning in the food web of a high mountain lake: from bacteria to zooplankton

The organisms of the microbial loop in Lake Paione Superiore (LPS), a high mountain lake in the Italian Alpine region, were studied together with phytoplankton and zooplankton for three successive years. The biomass of bacteria, HNF (heterotrophic nanoflagellates), ciliates and phytoplankton, as mean carbon concentration in the three years, was 30 and 37 μg C l-1 near the surface (SUR) and the bottom (BOT) respectively. Under the ice-cover the mean biomass carbon decreased especially at the BOT, whereas at SUR the decrease was less evident due to the maintenance of higher phytoplankton biomass (mixotrophic flagellates). In LPS ~50% of the carbon was confined in bacteria, 20% in protozoa and 30% in phytoplankton. The ratio Autotrophs/Heterotrophs was lower than 1 (mean: 0,97 at SUR and 0,58 at BOT) thus indicating a system with a predominance of the heterotrophs. This might be the result of light inhibition of algal growth coupled to a production of dissolved carbon, utilized by bacteria. During late summer the peak of Daphnia longispina, the main component of the zooplankton of LPS, increased the carbon content in the lake to a total of 158 and 300 μg C l-1 in 1997 and 1998 respectively. At the late summer peaks, zooplankton represented from 78 to 89% of the total carbon of the pelagic communities. Furthermore, the presence of Daphnia could be responsible for a decrease in the biomass carbon of a variety of organisms (algae, protozoa and bacteria). It may be possible that this is an instance of zooplankton grazing on algae, protozoa and also bacteria, as Daphnia has very broad niches and may eat pico-, nanoplankton and small ciliates. In the oligotrophic LPS, a diet which also includes protozoa could give Daphnia a further chance of survival, as ciliates are an important source of fatty acids and sterols