Fast-Setting Permeable Alkyd/Polyester Composites: Moulding Sands.

This paper presents the outcomes of extensive research targeting the development of high-performance alkyd and polyester resins used as binders in mould- and core-making permeable composite materials designated for large-size/complex-shape, heavy alloy-steel and cast-iron castings (0.5 to 50 tonnes): steam turbine casings (e.g.

Improving the Damping Properties of Nanocomposites by Monodispersed Hybrid POSS Nanoparticles: Preparation and Mechanisms.

In this work, a series of heptaphenyl siloxane trisilanol/polyhedral oligomeric silsesquioxane (T₇-POSS) modified by polyols with different molecular weights were synthesized into liquid-like nanoparticle⁻organic hybrid materials using the grafted-from method. All grafted POSS nanoparticles changed from solid powders to liquid at room temperature. Polyurethane (PU) nanocomposites with POSS contents ranging from 1.

Diagnosing segmental wedge fracture of the tibia before performing intramedullary nailing.

Tibial shaft fractures with a wedge butterfly segment are often repaired with intramedullary fixation. At the time of presentation, the fragment may appear benign on radiographs as a portion of the cortical bone in an acceptable position. However, a segment that includes the entire circumference of the tibial cortex can be a problem during surgical stabilization.