Publications by authors named "G Pisaneschi"
Article Synopsis
- This study explores how various post-printing treatments and aging affect the mechanical properties of 3D-printed materials, specifically focusing on white opaque and flexible photopolymers used in surgical simulators.
- The researchers conducted tensile and Shore hardness tests on 3D-printed specimens with different removal methods (dry vs. water) and surface treatment using glycerol, revealing significant changes in properties like elongation at break and tensile strength.
- Findings show that glycerol increases rigidity in flexible photopolymers initially, but aging restores their elongation, while rigid photopolymers become more deformable over time, highlighting the need for careful material selection and processing for durable surgical models.
The COVID-19 pandemic experience has highlighted the importance of developing general control principles to inform future pandemic preparedness based on the tension between the different control options, ranging from elimination to mitigation, and related costs. Similarly, during the COVID-19 pandemic, social distancing has been confirmed to be the critical response tool until vaccines become available. Open-loop optimal control of a transmission model for COVID-19 in one of its most aggressive outbreaks is used to identify the best social distancing policies aimed at balancing the direct epidemiological costs of a threatening epidemic with its indirect (i.
View Article and Find Full Text PDFVitreous enamel steels (VES) are a class of metal-ceramic composite materials realised with a low carbon steel basement coated by an enamel layer. During the firing phase to adhere the enamel to the metal, several gas bubbles remain entrapped inside the enamel volume modifying its internal structure. In this work high-resolution X-ray computed tomography (micro-CT) was used to investigate these composite materials.
View Article and Find Full Text PDFBacillus mycoides, a member of the Bacillus cereus group of bacteria, can be easily distinguished from close species because of colony shape, made by filaments of cells, resembling fungal hyphae, curving clock- or counterclockwise depending on the strain. Two plasmids, one from a strain curving to the right (pDx14.2), the other from a strain curving to the left (pSin9.
View Article and Find Full Text PDFBackground: Bacillus mycoides Flügge, a Gram-positive, non-motile soil bacterium assigned to Bacillus cereus group, grows on agar as chains of cells linked end to end, forming radial filaments curving clock- or counter-clockwise (SIN or DX morphotypes). The molecular mechanism causing asymmetric curving is not known: our working hypothesis considers regulation of filamentous growth as the prerequisite for these morphotypes.
Results: SIN and DX strains isolated from the environment were classified as B.