84 research outputs found
The return of the Blue Crab, Callinectes sapidus Rathbun, 1896, after 70 years from its first appearance in the Gulf of Trieste, northern Adriatic Sea, Italy (Decapoda: Portunidae)
No full textSince August 2015, an increasing number of Blue Crabs, Callinectes sapidus Rathbun, 1896, have been reported in the Marano and Grado Lagoon, Gulf of Trieste, in the northern Adriatic Sea. This species is not a new introduction and in fact the first record of C. sapidus in Italy and the entire Adriatic Sea dates back to 1949 in the Grado Lagoon. Interestingly, no other records of C. sapidus have been reported since the first record. Here, we note the re-appearance of C. sapidus in the Gulf of Trieste
Shannon Capacity Evaluation for 5G Communications Using the 3D Random Waypoint Mobility Model
No full textThis paper presents a mathematical analysis for estimating the Shannon capacity of a fifth-generation (5G) communication link established between a mobile user (MU) and a cellular base station. The analysis is carried out in a three-dimensional (3D) environment, adopting the random waypoint mobility model to statistically describe the displacement of the MUs, and including path-loss attenuation, directional antenna gains, and mid-scale fading. Closed-form expressions for the received signal power and for the channel capacity are derived for both line-of-sight (LoS) and non-LoS scenarios, assuming a noise-limited operating regime. The obtained analytical results, which are numerically validated by Monte Carlo simulations, are exploited to investigate the impact of the antenna gain and of the cell radius on the performance of the 5G link in a 3D scenario, considering both the 28 and 73 GHz millimeter-wave channels
MADIT II indication in clinical practice: two years experience from the Search-MI registry
No full text
The device check of implantable cardiac devices in the pharmacies: the first European pilot project
No full textLow Complexity Bounds on a Class of Irregular LDPC Belief-Propagation Decoding Thresholds
No full textThis paper investigates about the usefulness of a recently published low complexity upper bound on beliefpropagation decoding thresholds for a class of irregular lowdensity parity-check (LDPC) codes. In particular, the class considered is characterized by variable node degree distributions λ(x) of minimum degree i1 >2: being, in this case, λ′(0) = λ2 = 0, this is useful to design LDPC codes presenting a linear minimum distance growth with the block length with probability 1, as shown in Di et al.'s 2006 paper. These codes unfortunately cannot reach capacity under iterative decoding, since the achievement of capacity requires λ2 ≠ 0. However, in this latter case, the block error probability might converge to a constant, as shown in the aforementioned paper. © 2020 University of Split, FESB
Twenty Year Patient Survival and 17 Year Complications of Isolated Mitral Biocor Standard Porcine Valve
No full textObjective: Performance of the prostheses must be verified in the time domain. We report the 20-year survival of 230 patients operated of mitral replacement with Biocor Standard prosthesis in Padova and Verona and the 17 year prosthetic failure and complications of the series of Padova.
Methods: 230 patients, 150 females and 80 males, aged 71 ± 6.3 received 235 isolated mitral Prostheses in Verona (67) and Padova (168), between June 1989 and August 2004. Twenty-year survival including 1698 patient- years was complete. Prosthesis survival was evaluated in the patients of Padova with a 90% goodness of follow-up and included 905 patient-years.
Results: Twenty-seven operations were done in the eighties, 168 in the nineties, 52 in this century. Three operations were emergent, 20 urgent. The indication was prosthetic malfunction in 50 cases (21.7%), regurgitation in 114 (49.6%), stenosis in 22 (9.7%), mixed lesion in 44 (19.1%), concomitant CABG (Coronary Artery Bypass Graft) was performed in 23%. Overall survival was 6% (2-13%), Thirty day mortality was 8.9% (5.6-13.3%). The early hazard phase extended to 2.5 years with a linearized rate 1.4%/patient-years vs. a late rate of 7.2%/patient-years. Seventeen years freedom from reoperation was 80.5% (55.3-92.3%), actual 92% (86.4-94.5%), from SVD (Structural Valve Degeneration) 85.2% (52.6-96.1%) actual 94% (88.2-96.7%), from perivalvular leak 92.6% (86.5-96%), from embolism 83.1% (73-89.7%), from haemorrhage 83.8% (71.5-91.1%), from endocarditis 90.9% (82.4-95.4%), from pacemaker 77% (60.2-87.5%).
Conclusion: Mitral Biocor has optimal durability and average complications. Premature mortality (6% vs. 30% survival of US (United States) matched population) is unrelated to prosthesis performance and suggest failure of our surgical strategy of the past centur
Twenty-Year Patient Survival and 17 Year Complications of Isolated Mitral Biocor Standard Porcine Valve
No full textTwenty-Year Patient Survival and 17 Year Complications of Isolated Mitral Biocor Standard Porcine Valv
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