The aim of this study was to evaluate the flexural strength of acrylic resin bars by varying the types of resin polymerization and reinforcement methods. Fourteen groups (N=10) were created by the interaction of factors in study: type of resin (self-cured (SC) or heat-cured (HC)) and reinforcement method (industrialized glass fiber (Ind), unidirectional glass fiber (Uni), short glass fiber (Sho...

The intracellular dialysis technique was used to measure unidirectional Cl- fluxes and net acid extrusion by single muscle fibers from the giant barnacle. Decreasing pHi below normal levels of 7.35 stimulated both Cl- efflux and influx. These increases of Cl- fluxes were blocked by disulfonic acid stilbene derivatives such as SITS and DIDS. The SITS-sensitive Cl- efflux was sharply dependent up...

Abstract This research examines the effect of fiber alignment on performance an exceptionally tough 3D-printable short carbon reinforced cementitious composite material, flexural strength which can exceed 100 N/mm 2 . The material shows pseudoductility caused by strain-hardening and microcracking. An extrusion-based manufacturing process allows accurate control over spatial fibers’ orientation,...

Bamboo is a unidirectional fiber-reinforced material with excellent flexibility and flexural toughness arising from its unique cellular hierarchical structure, which creates an urgent demand in the bamboo industry to understand potential mechanisms of those two performances. In this study, proposed original method was used quantitatively evaluate gradient distribution aggregate structure fibers...

Abstract A proven method to enhance the mechanical properties of additively manufactured plastic parts is embedding continuous fibers. Due its great flexibility, fiber-reinforced material extrusion allows fiber strands be deposited along optimized paths. Nevertheless, fibers have so far been embedded in contour-based or on basis regular patterns. The outstanding strength and stiffness longitudi...

Threshold sensory stimulation of the skin has become the object of increasingly intensive investigation since the classic report by Hardy, Wolff and Goodell' on the pain threshold of thermal radiation. The literature on the subject is rapidly becoming voluminous with interesting ramifications appearing in many fields of medicine. More recently Cormia3 reported on the itch threshold in experimen...

Abstract At present, the world is focusing on circular economy by turning waste into production resources again, reducing generation, and making it circulate in system. This research focuses using agricultural waste, which pineapple leaves abundant Thailand, to be processed leaf fibers (PALF) used reinforce natural rubber. PALF has relatively high strength when compared other fibers. On hand, c...

Malfunction of the unidirectional valve in a breathing circuit system may cause hypercapnia from the rebreathing of expired gas, ventilation failure, and barotrauma. Capnography is a useful method for monitoring the integrity of the unidirectional valve. We experienced two cases of malfunction of a unidirectional valve which caused leakage and reverse flow, diagnosed early as a change of the ca...