188,854 research outputs found
13 - Modeling the post-LGM deglaciation of the Scandinavian-Barents Sea Ice Sheet: a model intercomparison approachM. Petrini, N. Kirchner, F. Colleoni, A. Camerlenghi, M. Rebesco, R.G. Lucchi, R. Noormets, E. Forte, R.R. Colucci
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Marine Geology - Extended abstract(M. Petrini, N. Kirchner, F. Colleoni, A. Camerlenghi, M. Rebesco, R.G. Lucchi, R. Noormets, E. Forte, R.R. Colucci)</div
KM3NeT/ARCA Sensitivity to Starburst Galaxies
No full textIn this work, the expectations of the full detector KM3NeT/ARCA are presented for particular starburst galaxies signals. For the point-like search approach, we considered the most promising local starburst galaxies to be observed as point-like neutrino excesses: NGC 1068, the Small Magellanic Cloud and the Circinus Galaxy. In both cases, we provide the energy-integrated sensitivity for two ARCA building blocks in the energy range 100 GeV − 10 PeV. In the diffuse scenario, both track and shower events were considered. For the point like analysis, only νµ charge current events were taken into account. Interestingly, ARCA has the potential to constrain the selected phenomenological scenarios, providing evidence of the link between star-forming processes and hadronic emissions
4 - The sedimentary system South of Svalbard: environmental impact of extreme glacimarine sedimentation after LGM
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Marine Geology - Extended abstract(R.G. Lucchi, A. Camerlenghi, M. Rebesco, L. Sagnotti, R. Melis, C. Morigi, G. Giorgetti, G. Villa, D. Persico, P. Macrì, A. Caburlotto, and OGS international partners of SVAIS, EGLACOM, CORIBAR and ARCA projects )</div
15 - Italian Hydrographic Institute and OGS Arctic Surveying and Mapping
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Marine Geology - Extended abstract(R. Ivaldi, M. Rebesco)</div
NIR dyes based on [M(R,R ' timdt)(2)] metal-dithiolenes: Additivity of M, R, and R ' contributions to tune the NIR absorption (M = Ni, Pd, Pt; R,R ' timdt = monoreduced form of disubstituted imidazolidine-2,4,5-trithione)
No full textWith the aim of preparing new dyes for Q-switching and/or mode-locking Nd-based lasers, such as Nd:YLF and Nd:YAG (emission wavelengths 1053 and 1064 nm, respectively), the syntheses of about 30 new neutral dithiolenemetal complexes belonging to the class [M(R,R′timdt)2] have been carried out [M = Ni (4a−c; 4g−j), Pd (5a−j), Pt (6a−j); R,R′timdt = monoreduced form of disubstituted imidazolidine-2,4,5-trithione]. The examination of the effects induced on the intense NIR absorption by changing M, R, and R′ has allowed for the recognition of the additive contributions (Δλ) of the central metal ion and of the substituents to the λM,R,R′max position of the NIR absorption maximum, which is in the region of 1000 nm. The high Δλ values due to aromatic substituents have been elucidated by means of Hybrid-DFT calculations performed on the model compound [Ni(H2timdt)(Ph,H-timdt)]. Both the λM,R,R′max values and the molar extinction coefficients vary with the solvent. Complex 5f [M = Pd, R = p-F-C6H4, R′ = m,m,p-(MeO)3-C6H2] shows that it has been possible to exactly match the emission wavelength of the Nd:YLF and Nd:YAG lasers in chloroform and toluene, respectively (by choosing the appropriate combination of metal ion and substituents). The highest extinction coefficient ever observed for a metal-dithiolene (120000 M−1·cm−1 at 1034 nm in toluene) is also reported for complex 6g [M = Pt, R = p-F-C6H4, R′ = naphthyl]. Time-resolved absorption dynamics measurements on 5f have also been carried out by means of pump-probe experiments, with a picosecond Nd:YAG Q-switched and mode-locked laser
19 - Individual particle characterization of long range transported wildfire aerosols in the Arctic region
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Atmosphere - Extended abstract(B. Moroni, S. Crocchianti, M. Mazzola, S. Becagli, R. Traversi, L. Caiazzo, R. Udisti, D. Cappelletti)</div
23 - Unmanned continuous reflectance monitoring of snowed surfaces
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Ice and snow - Extended abstract(R. Salvatori, R. Salzano, G. Esposito, C. Lanconelli, M. Giusto, M. Montagnoli, M. Mazzola, A.P. Viola, V. Vitale)</div
7 - Drilling glacial deposits in offshore polar regions
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Marine Geology - Extended abstract(T.J.J. Hanebuth, M. Rebesco, R. Urgeles, R.G. Lucchi, T. Freudenthal)</div
Clinical and biochemical characterisation of patients with autosomal recessive hypercholesterolemia (ARH)
No full textBackground and Aim: Inherited hypercholesterolemias are common disorders characterised by elevated LDL-C levels and premature coronary heart disease. We have recently described a recessive form of hypercholesterolemia (autosomal recessive hypercholesterolemia, ARH) in which LDL catabolism is reduced because of a mutation in the gene coding for an adaptor protein that impairs LDL-receptor (LDL-R) activity in the liver. The aim of this study was to characterise in detail the phenotypes of subjects with homozygous and heterozygous ARH. Methods and Results: We have so far identified six Italian families with ARH and studied the clinical and biochemical characteristics of 11 homozygotes (age 13-47 years) and 12 obligate heterozygotes (age 42-83 years). The study protocol included an evaluation of the lipoprotein profile, LDL-R activity in fibroblasts, LDL binding activity, and apo E genotype; a structured questionnaire (CHD risk factors, medical history, current medications); a physical examination, resting and stress ECG, ultrasound examinations (heart, carotid arteries, Achilles tendons) and coronary angiography. The pedigrees were characterised by the absence of vertical transmission; consanguinity was documented in two families. Only the two previously described Sardinian mutations, ARHI (c.432insA) and ARH2 (c.65G>A), were identified in the probands. All of the ARH homozygotes had large tendinous xanthomas, two had exertional angina, and four a positive stress ECG None had experienced myocardial infarction or stroke. More than half had instrumental signs of atherosclerosis such as a positive stress ECG or positive carotid echo-doppler examination. The ARH heterozygotes were consistently normal and had a normal lipid profile. Conclusions: The ARH phenotype resembles that of familial hypercholesterolemia (FH) homozygotes, but ARH may be a less serious illness. The absence of vertical transmission, and the presence of mild coronary heart disease and consanguinity, can suggest a possible diagnosis of ARH. ARH might be considered a phenocopy of FH but heterozygous subjects seem to have a consistently normal phenotype. (C) 2003, Medikal Press
25 - Snow atmospheric fluxes of reactive nitrogen species in the European high Arctic
No full textARCA Project - Final Conference, 11 October 2016 Rome - Poster Session - Ice and snow - Extended abstract(A. Ianniello, F. Spataro, R. Salvatori, M. Valt, G. Esposito, M. Montagnoli )</div
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