Blisters

About: Blisters is a research topic. Over the lifetime, 980 publications have been published within this topic receiving 16229 citations.

Acid hydrolases in blister fluid. 6. Photocontact and contact allergic skin reactions.

Abstract: Increased acid hydrolase activity has been demonstrated in the fluid from experimental suction blisters raised on the sites of contact or photocontact allergic skin reactions. The magnitude of the increases correlated well with the intensity of the reactions. The enzymes appeared after latent periods of 10 h for vesicular reactions, 15 h for papular reactions and 24 h for erythematous responses. The present observations are very similar to those reported following UV-B; thus our previous conclusions regarding the role of lysosomal hydrolases in UVR erythema may be generalized to include other forms of cutaneous inflammation.

Prevention of foot blisters.

Abstract: Foot blisters are the most common medical problem faced by Soldiers during foot march operations and, if untreated, they can lead to infection. Foot blisters are caused by boots rubbing on the foot (frictional forces), which separates skin layers and allows fluid to seep in. Blisters can be prevented by wearing properly sized boots, conditioning feet through regular road marching, wearing socks that reduce reduce friction and moisture, and possibly applying antiperspirants to the feet.

Surface blistering of molybdenum irradiated with 75–350‐keV helium ions

Abstract: Polycrystalline molybedenum samples have been irradiated at room temperature with helium ions of energy from 75 to 350 keV in high vacuum. Irradiation parameters such as ion energy, total dose, and dose rate were varied and surfaces were examined in a scanning electron microscope. The average blister diameter increases with increasing ion energy and the blister number density increases with increasing total dose of helium. The critical dose for blister formation is independent of the beam flux in the range of 6.7×1013 to 2×1015 ions cm−2 s−1. However, the average blister diameter changes with the change of flux. When the molybdenum surface is successively bombarded with varying ion energies, both the diameter and the number density of the blisters is significantly reduced as compared to monoenergetic helium bombardment.

Investigation of Surface Morphology of 6H-SiC Irradiated with He+ and H2+ Ions

Abstract: Light ion implantation is one of the important procedures of smart cut for SiC-based semiconductor fabrication. This work investigated the surface morphologies and microstructures of single crystal 6H-SiC irradiated by one or both of H2+ and He+ ions at room temperature and then annealed at specific temperatures. Blisters evolved from the coalescence of H nanocracks were formed in the H2+ and He++H2+ irradiated sample surface, while circular ripples originated from the pressure release of helium bubbles after high temperature annealing were formed in the He+ irradiated sample surface. The lateral radius a of the blisters in the irradiated sample with low H2+ fluence was larger than that in the irradiated sample with high H2+ fluence and with He++H2+ ions. About 8–58% of implanted H atoms contributed to the formation of the blisters. Compared with other irradiated samples, the ratio of w0/a and the density of the blisters in the He++H2+ irradiated samples were largest. The stress field of the blisters was simulated using finite element method and the inner pressure in the blisters was also calculated. The corresponding mechanism was analyzed and discussed.