Laser measurements and 3D-viscous calculations were performed to verify the design of a 30deg. backswept impeller with advanced blade geometry and high design rotor pressure ratio (πt12=4.7:1). Both, measured and calculated results are in good agreement. They are pointing to a low velocity area inside the rotor that vanishes toward the exit resulting in comparatively smooth discharge velocity profiles. The rotor geometry used for the verification is released. The application of the 3D-viscous calculation code now embedded in an impeller design procedure and its support by a number of pre- and postprocessing programs is described.
Successful laser treatment of haemangiomas requires selective photocoagulation of subsurface targeted blood vessels without thermal damage to the overlying epidermis. We present an in vivo experimental procedure, using a chicken comb animal model, and an infrared feedback system to deliver repetitive cryogen spurts (of the order of milliseconds) during continuous Nd:YAG laser irradiation. Gross and histologic observations show deep-tissue photocoagulation is achieved, while superficial structures are protected from thermal injury due to cryogen spray cooling. Experimental observation of epidermis protection in chicken comb animal models suggests selective photocoagulation of subsurface targeted blood vessels for successful treatment of haemangiomas can be achieved by repetitive applications of a cryogen spurt during continuous Nd:YAG laser irradiation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.