31,544 research outputs found
Da Parma a Casalmaggiore: Parmigianino ultimo atto. F. M. Grapaldo, De partibus aedium; G. Anselmi nipote, Epigrammaton libri septem; Parmigianino, Figura virile di spalle; Parmigianino, Fanciullo con la tavola dell’abecedario J. Heinz il vecchio, Cupido che fabbrica l’arco; M. Ghislina, Madonna col Bambino, i Santi Stefano, Giovanni Battista e committente; Parmigianino, Madonna col Bambino tra i Santi Stefano e Giovanni Battista ; Anonimo, Lucrezia romana; E. Vico, Lucrezia; G. B. Barbieri, Fortezza; G. B. Barbieri, Sant’Agapito; A. Falco, Tomba di giovane
No full textRedox state of magmas and granite-related Mo mineralization: evidences from Late Variscan F- bearing granites from Southern Sardinia (Italy)
No full textRedox state of magmas has been invocated to explain the metallogenic behaviour of intrusive magmatism (Ishihara,
1981). Thus, Sn deposits are linked to low-fO2, ilmenite series, while Mo deposits are better bracketed into high-fO2,
magnetite series. In Variscan Europe Mo deposits are represented in a few districts, including Eastern Erzgebirge,
France and Sardinia. In Sardinia, small Mo deposits are related to a post-collisional F-bearing granite suite dated close
to 290 Ma by Re/Os on molybdenite (Boni et al., 2003) and 40Ar/39Ar on biotite (Dini et al., 2005). This late Variscan
suite is dominated by metaluminous biotite leucogranites grading to hololeucratic microgranitic to granophyric
varieties; amphibole biotite monzogranites are locally observed (Monte Sette Fratelli). They emplaced at shallow crustal
levels and locally (Ogliastra) grade to felsic volcanics. Thermal effects of the intrusions are limited to narrow contact
aureolas (andalusite zone) around the plutons. In SW Sardinia (Sulcis and Monte Linas intrusions), both Mo and Sn
deposits occur. Magmatic bodies show a distinctive magmatic zonation, with medium-grained granites dimembered
upward by thick, flat-lying fine-grained to porphyritic varieties, including fayalite-bearing pegmatite layers. Finegrained
to porphyritic rocks suffered various degrees of greisening, and host Mo ores, related to numerous small endoand
exo- quartz-muscovite greisens (e.g. Perda Lada), grading to quartz vein and stockwork systems (Perd'e Pibera, Su
Seinargiu, Flumini Binu). Ores are commonly dominated by molybdenite, with subordinate pyrite, chalcopyrite and
wolframite. The studied deposits are related to ilmenite rock -series, as evidenced by petrography (opaque contents of
granites <1%; ilmenite>>magnetite), and confirmed by geochemical ratios (Rb/Sr, FeO/Fe2O3, K/Rb). This behavior
seems to contrast with the Mo/magnetite series association, and is more coherent with the presence of Sn vein deposits
in the same areas (Naitza et al. 2015). A possible explanation involve changes of physicochemical parameters (in
particular, fO2 and HF activity) from magmatic processes during magma emplacement to greisening; variation of redox
conditions are confirmed by discontinuous reverse zoning of plagioclase laths in fine-grained facies, indicating a
progressive PH2O increase with magmatic evolution. Mineralization prevalently occurred in close system conditions,
although in some areas (Oridda, Su Seinargiu, Flumini Binu) Mo ores are centered on bodies of porphyritic rocks,
showing features close to porphyry-style mineralization (Fiori et al., 1986).
Boni M., Stein H.J., Zimmerman A. & Villa I.M. 2003. Re-Os age for molybdenite from SW Sardinia (Italy): a
comparison with 40Ar/39Ar dating of Variscan granitoids. In: Eliopulos K. et al., Eds., Mineral exploration and
sustainable development. Millpress, Rotterdam, 247-250.
Dini A., Di Vincenzo G., Ruggieri G., Rayner J. & Lattanzi P. 2005. Monte Ollasteddu, a new gold discovery in the
Variscan basement of Sardinia (Italy): first isotopic (40Ar-39Ar, Pb) and fluid inclusion data. Miner. Deposita, 40,
337-346.
Fiori M., Garbarino C., Padalino G. & Masi U. 1986. Chemical features of wallrocks from Mo-showings of Sardinia
(Italy). Rend. Soc. It. Mineral. Petrol., 41, 25-39.
Ishihara S. 1981. Granitoid series and mineralization. Economic Geology, 75th anniversary volume, 458-484.
Naitza S., Secchi F., Oggiano G. & Cuccuru S. 2015.
Memory deficits induced by spontaneous ethanol consumption in sP rats are associated with a diminished release of hippocampal acetylcholine
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Neglecting the Eyes and It's CASCADE EFFECT On Joint Attention Abilities In CHILDREN with ASDs
No full textBackground: In our previous study (Fadda, Doneddu, Striano, Chessa, Salvago, Frigo, Liberati, 2010), we found quantitative differences in the way children with ASD process static eye-gaze direction: They demonstrated fewer fixations to the eyes region compared to controls but equal fixation to the gaze target (GT). These results indicated that children with ASD might be successful in locating the referent of the gaze due to an atypical pattern of visual attention, involving over-exploration of the visual-field. However, in this previous study, we used static pictures of an adult looking toward an object and therefore we might have underestimated children’s ability to focus on the eyes. Moreover, we did not explore to what extent the reduced focus to the eyes prevents children to develop the ability to produce visual patterns of Joint Attention (JA) when observing complex social scenes.
Objectives: In this study, we aimed to investigate: 1) the ability to follow a dynamic referential looking in children with ASDs; 2) whether children with ASDs who are able to follow a dynamic referential looking produce visual pattern of JA when exploring a complex social scene.
Methods: We compared 20 children with ASDs (mean chronological age: 102 mths; sd=32,201), 18 autistics, mean non verbal IQ (Leiter-R)= 64 (sd=17.589), mean verbal IQ (PVT)=69,79 (sd=11,128), with a group of TD controls (10 males) in the preschool years (mean age=59 months; sd=8.44). Children were tested twice with the Tobii T60 Eye Tracker. In the first test, they observed a video in which an actor looked laterally towards one of two identical objects depicted on eye level next to her face. We measured the number of fixations on two specific areas of interest: eyes and gaze target (GT). The second video showed an adult and a child sitting at a table, one in front of the other. The adult poured some juice into two glasses, put some sugar into one glass and asked the child: “Which one is for you?”. We counted the number of JA visual patterns (adult-object-child) produced by children during the observation of the scene.
Results: The results showed that ASD children looked less to the eyes compared to controls (mean FC ASD=7,79, sd=3,824; mean FC TD=10,40, sd=3,992; t=2,084; df=37; p<0.05). However, they were as accurate as controls in locating the GT. Children with ASDs showed also a reduced visual pattern of JA when exploring the social scene (mean JA ASD= 2,42, sd=1,121; mean JA TD=5,05, sd=2,03; t=4,953, df=37, p<0.05).
Conclusions: These results confirmed the findings in our previous study (Fadda et al., 2010), namely that children with ASDs are able to locate a referential target even though they focus less on the eyes. This is true even when the referential gaze is dynamic (gaze shifting) so the eyes motion might better capture the observers’ attention. Neglecting the eyes seems to have a negative cascading effect on visual patterns of JA attention in children with ASD, confirming that focus on relevant social cues is pivotal for social development
OCCURRENCE OF EXTENDED-SPECTRUM BETA LACTAMASES IN MEMBERS OF THE FAMILY ENTEROBACTERIACEAE IN ITALY<: IMPLICATIONS FOR RESISTANCE TO BETA-LACTAMS AND OTHE ANTIMICROBIAL DRUGS
No full textPerformance evaluation of D2D-based SFN for multicast service delivery in 5G networks
No full textThe always increasing demand for group-oriented services challenges wireless network operators to efficiently handle the increased traffic load and the dissimilar channel quality experienced by users in the same multicast group. Long Term Evolution-Advanced (LTE-A) represents the most promising wireless system to support group-oriented services. A traditional approach for providing multicast services is the fair yet conservative Conventional Multicast Scheme (CMS) which serves all multicast members with the data rate supported by the receiver with the worst channel conditions. In order to address some of the limitations of the CMS approach, Device-to-Device (D2D) communications can be employed to reach users in the multicast group with poor channel conditions by means of one or more forwarding devices (FD). In this paper we analyze the performance of the D2D-enhanced CMS approach when considering all frame configurations foreseen by the LTE-A standard in order to draw some guidelines in case of video streaming transmission
Erratum to: Effect of moderate red wine intake on cardiac prognosis after recent acute myocardial infarction of subjects with Type 2 diabetes mellitus (Diabetic Medicine, (2006), 23, 9, (974-981), 10.1111/j.1464-5491.2006.01886.x)
No full textIn an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola.In an article by Marfella et al, the author name C. Saron is incorrect and should be listed as C. Sardu. Therefore the correct author list is: R. Marfella, F. Cacciapuoti, M. Siniscalchi, F. C. Sasso, F. Marchese, F. Cinone, E. Musacchio, M. A. Marfella, L. Ruggiero, G. Chiorazzo, D. Liberti, G. Chiorazzo, G. F. Nicoletti, C. Sardu, F. D'Andrea, C. Ammendola, M. Verza and L. Coppola
Thyroid fine needle aspiration cytology processed by ThinPrep: an additional slide decreased the number of inadequate results
No full textFine needle aspiration cytology is the most accurate tool for diagnosing thyroid nodules. Its accuracy is related to the rate of inadequate samples, which can be minimized with the adoption of on-site assessment of the adequacy of the material. The introduction of liquid-based cytology (LBC) in the thyroid does not allow checking on the adequacy of the cellularity. The possibility of making a second LBC slide for decreasing the number of non-diagnostic cases is studied
Colonic carcinoma metastatic to the endometrium: The importance of clinical history in averting misdiagnosis as a primary endometrial carcinoma
No full textMetastases to endometrium are a rare event. A case of a 53-year-old woman with a previous colon cancer presenting with a dysfunctional uterine bleeding is reported. The curettage specimens consisted of multiple fragments of proliferative endometrial tissue mixed with irregular glands, focally amputated, lined by very cells with elongated, hyperchromatic nuclei and solid sheets of neoplastic cells often filled with necrotic debris and inflammatory cells, resembling endometrioid adenocarcinoma. Neoplastic cells resulted positive at immunohistochemical reaction for CK20, CDX2, p53 and negative for CK7, vimentin, ER, and PR suggesting a metastatic colon adenocarcinoma. Absence of premalignant changes, such as hyperplasia, besides frankly malignant glands in an endometrial curette should be regarded as an alarming feature for a secondary nature mostly from large bowel. In these cases clinical history is crucial and an immunohistochemical panel made up of CK7, CK20, CDX2, p53, vimentin, ER, and PR is useful for the correct diagnosis. © SAGE Publications 2011
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