Stacking self-gluing cellulose II films: A facile strategy for the formation of novel all-cellulose laminates.

Cellulose laminates represent a remarkable convergence of natural materials and modern engineering, offering a wide range of versatile applications in sustainable packaging, construction, and advanced materials. In this study, novel all-cellulose laminates are developed using an environmentally friendly approach, where freshly regenerated cellulose II films are stacked without the need for solvents (for impregnation and/or partial dissolution), chemical modifications, or resins. The structural and mechanical properties of these all-cellulose laminates were thoroughly investigated.

Pulmonary Valve Replacement in Tetralogy of Fallot: Procedural Volume and Durability of Bioprosthetic Pulmonary Valves.

Background: Robust data on changes in pulmonary valve replacement (PVR) procedural volume and predictors of bioprosthetic pulmonary valve (BPV) durability in patients with tetralogy of Fallot (TOF) are scarce.

Objectives: This study sought to assess temporal trends in PVR procedural volume and BPV durability in a nationwide, retrospective TOF cohort.

Methods: Data were obtained from patient records.

Fatal Rupture of Occult Posttraumatic Left Ventricular Aneurysm in a Child.

Left ventricular aneurysm is a potentially serious but rare condition in children. This case describes delayed but fatal rupture of an occult posttraumatic left ventricular aneurysm in an 11-year-old boy with a history of blunt chest trauma from a high-impact automobile collision 7 months earlier. ().

Temporal changes in the surgical management of patients with tetralogy of Fallot in Denmark: a nationwide cohort study.

Objectives: To assess temporal changes in the surgical management of patients with tetralogy of Fallot including the timing of interventions, surgical techniques, reinterventions and survival in a nationwide cohort.

Methods: Patients with tetralogy of Fallot in Denmark were divided into 3 eras based on their year of birth: early (1977-1991), intermediate (1992-2006) and late (2007-2021).

Results: The cohort consisted of 745 patients.

Anti-Stokes fluorescence cooling of nanoparticle-doped silica fibers.

The first observation of cooling by anti-Stokes pumping in nanoparticle-doped silica fibers is reported. Four Yb-doped fibers fabricated using conventional modified chemical vapor deposition (MCVD) techniques were evaluated, namely, an aluminosilicate fiber and three fibers in which the Yb ions were encapsulated in CaF, SrF, or BaF nanoparticles. The nanoparticles, which oxidize during preform processing, provide a modified chemical environment for the Yb ions that is beneficial to cooling.