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Giovan Pietro Bellori, Life of Federico Barocci
No full textedizione con commento scientifico della Vita di Federico Barocci di Giovan Pietro Bellori (1672
Il principio del risultato e la discrezionalità nell’autotutela amministrativa: riflessioni a margine della sentenza TAR Campania, Sez. IV, 17 giugno 2025, n. 4556
No full textA two-step full laser surface treatment to improve the adhesive bonding of aluminium-aluminium joints
Full text linkTo improve the adhesion between Aluminium-Aluminium joints, a two-step laser surface treatment was developed and tested, adopting a 30W pulsed Yb:YAG nanosecond laser source. The process consists of a first phase, called laser texturing, where a deep texture is obtained on the adherents by adopting high pulse energy and several repetitions, followed by a further laser treatment, called laser cleaning, carried out with lower energy content, and applied over the overall adhesion surface. To characterise the treatment process, the effects of technological parameters on texturing geometry were first investigated to select the proper texture; then, textures with different selected geometries were carried out and adopted to produce single-lap joints according to the ASTM D1002-10 Standard. An epoxy system adhesive was adopted for the joining. Furthermore, samples with only one-step treatment (i.e. only laser texturing or laser cleaning), standard treatment (sandpaper), and acetone cleaning were fabricated and adopted as reference samples. Analysis of variance was applied to study the effect of the process parameters, and digital image analysis was adopted to evaluate the percentage of adhesive/cohesive failure. From the results, compared to the only textured reference samples, the two-step laser treatment increases the apparent shear stress regardless of the adopted texture geometry. Moreover, it was found that only laser cleaning treatment can significantly improve joint strength compared to the untreated sample
Photogrammetry Versus Intraoral Scanning in Complete‐Arch Digital Implant Impression: A Systematic Review and Meta‐Analysis
Full text linkStatement of the problem: The application of digital impressions for complete-arch implant supported fixed dental prostheses (FDP) remains controversial, and data from a systematic review with meta-analysis comparing intraoral scanning (IOS) and stereophotogrammetry (SPG) remain limited. Purpose: To evaluate and compare the accuracy of currently available digital technologies, specifically IOS and SPG, in capturing complete-arch implant impressions. Materials and methods: An electronic and manual search was conducted on May 4, 2024, across PubMed, Embase, and Cochrane CENTRAL databases following PRISMA guidelines. The search targeted studies (excluding case reports) that assessed the in vivo, in vitro, or ex vivo accuracy of IOS and SPG for complete-arch implant impressions. Two investigators screened eligible studies using the QUADAS-2 tool. Accuracy was the primary outcome, including linear, angular, surface deviations, and inter-implant distance. Three meta-analyses were performed on angular deviations, trueness, and surface deviations, trueness, and precision using a random-effect model. Results: Thirteen studies (3 in vivo and 10 in vitro) met inclusion criteria, displaying methodological heterogeneity (8 analyzing surface, 3 linear, 8 angular, and 3 interimplant distance deviations). The studies evaluated seven IOS (Aoralscan 3, Carestream 3600, iTero Element 2, iTero Element 5D, Primescan, Trios 3, and Trios 4) and two SPG devices (PIC and ICam4D). The number of implants ranged from 4 to 8. SPG reported higher accuracy than IOS in 10 of 13 studies. One in vitro study found IOS to have higher trueness but lower precision, another in vitro study found higher accuracy with IOS, and one in vivo study showed comparable trueness. Meta-analyses of in vitro studies revealed significant differences favoring SPG in surface deviation trueness and precision, and angular deviation trueness (p < 0.05), with reported effects of 3.426, 4.893, and 1.199. SPG showed surface trueness and precision, and angular trueness mean ranges 5.18-48.74 and 0.10-5.46 μm, and 0.24°-0.80°, while IOS ranges 14.8-67.72 and 3.90-37.07 μm, and 0.28°-1.74°. Conclusions: Within study limitations, SPG showed to be a more reliable technology than IOS for complete-arch digital implant impression, exhibiting significantly greater trueness and precision. IOS reported an angular deviation exceeding the 1° threshold required for a passive fit. Further clinical trials are required for conclusive evidence. Until then, a rigid prototype try-in is still recommended. Trial registration: CRD42024490844
Substance use and academic performance among university students: systematic review and meta-analysis
Full text linkBackground: Substance use is a widespread concern among young adults and is particularly significant among college students. Substance use in this population is associated with several academic, physical, mental, and social difficulties. This systematic review and metanalysis explores whether there is an effect of the legal and illegal substance and alcohol consumption behaviors on academic achievement among university students. Methods: The databases searched were MEDLINE, CINHAL, Scopus, ERIC, and PROSPERO, updated in January 2025. The risk of bias was assessed using the Edwards score. We used a random-effects model. The protocol of this review was registered in the Open Science Framework. Results: The systematic review included 21 studies, while the meta-analysis included four studies. In a sample of 1,219 subjects in the control group and 350 legal and illegal substances consumers, there is a negative and significant association of substances consumption on academic achievement [SMD = - 0.61 (95% CI - 0.84 to - 0.38; p = 0.008). In a subgroup analysis, a sample of 2,479 subjects in the control group and 7,134 alcohol consumers, there is a non-statistically significative association of alcohol consumption on academic achievement [SMD = - 0.24 (95% CI -0.51 to 0.04; p = 0.073). Conclusions: Despite the limitations of this study, this systematic review provides quantitative evidence on the relationship between legal and illegal use of substances among university students and academic achievement. Specifically, we found a significant medium association of substance use in general and a small effect for alcohol consumption on academic achievement. Clinical trial number: Not applicable
A narrative review of glucagon-like peptide-1 receptor agonists prior to deep sedation or general anesthesia
Full text linkGlucagon-like peptide-1 receptor agonists are a class of drugs that mimic a natural incretin hormone released by the intestine after meals, and they are well-suited for treating type 2 diabetes. Glucagon-like peptide-1 receptor agonists also lead to satiety and appetite reduction through action on the brain’s appetite regulation centers, leading to weight loss in obese patients. However, because glucagon-like peptide-1 receptor agonists work to slow gastric emptying, a safety concern has been raised in patients undergoing deep sedation or general anesthesia regarding gastric aspiration, and considering their long half-life in the blood, they are difficult to manage in the perioperative period. The purpose of this review is (i) to explore the present knowledge about the risk of aspiration before anesthesia; (ii) to describe the method for evaluating the presence of liquid and food in the stomach before surgery; and (iii) to balance the actual warning with the opportunity for future discovery about their benefits
