Abstract: A boiler and method of operating a boiler are disclosed. The boiler generally includes a housing defining an enclosed region and a plurality of heat exchange conduits at least partially positioned within the enclosed region of the housing and arranged into an interior column and an exterior column. A baffle is at least partially positioned within the enclosed region of the housing and positioned between the interior column and the exterior column of heat exchange conduits. The baffle and the housing together define a constricted region. The heat exchange conduits of the exterior column are positioned within the constricted region. The constricted region defines a path for directing the flow of products of combustion adjacent the heat exchange conduits of the exterior column thereby facilitating the exchange of heat between the products of combustion and water within the heat exchange conduit of the exterior column.

Abstract: A method and system for a software driver of a graphics controller to work with a display codec. The software driver may be configured to work with different display codecs at different periods of time while using a default configuration. Other embodiments are also described.

Abstract: A cylindrical heat exchanger member can be formed from multiple stacked ring shaped tubular members wherein an inlet and outlet of each ring shaped member terminate at a single header interface, thus permitting access to the inlet and outlet of each ring shaped member at a single location which enables rapid configuration of an combination of flow paths through the multiple ring shape members as well as simple and efficient cleaning of each ring shaped member.

Abstract: A cylindrical heat exchanger member can be formed from multiple stacked ring shaped tubular members wherein an inlet and outlet of each ring shaped member terminate at a single header interface, thus permitting access to the inlet and outlet of each ring shaped member at a single location which enables rapid configuration of any combination of flow paths through the multiple ring shape members as well as simple and efficient cleaning of each ring shaped member.

Abstract: An improved surgical method and apparatus using laser energy for destroying body tissue which includes a surgical handpiece including a surgical tip assembly which is driven by means of laser to achieve optical breakdown, plasma formation and shockwave generation to emulsify or destroy body tissue. The surgical tip assembly includes a laser fiber, a focusing means to enhance optical breakdown of tissue or fluid caused by laser energy transmitted through the laser fiber and an emulsification tip that is resonate tuned to vibrate in response to shockwaves produced by the optical breakdown caused by the laser energy. The emulsification tip and focusing means are configured in a spaced relationship to form an acoustic resonating chamber which further emulsifies body tissue and facilitates mixing of tissue with irrigation fluid.