Abstract: A lighting system mountable to a support surface comprising a mounting bracket and a light housing having a lens attached thereto and a bulb located the lens. A photo control is also include which has a gradient of decreased opacity which controls the duration of operation of the light by adjustably limiting the amount of light sensed by the control. In addition, a shield located between the bulb and the lens may be provided. The shield is positionable about the bulb to selectively block light emitted by the bulb.The mounting bracket has a first support and a second support and the housing is adapted to releasably engage the supports in a sequential manner whereby when the first support is engaged, the housing is pivoted about the first support until the housing is in engagement with the second support. The housing then coacts with the second support so that it is secured to the mounting bracket in a fixed manner.

Abstract: A computer system including a processor, a main memory and a cache memory uses tagging of various regions of memory to define and select caching properties of transfers between the processor and memory via the cache. The main memory contains not only standard random access memory (RAM) and read-only memory (ROM) but also memory-mapped input/output (I/O) sources. Tagging of the memory regions configures the regions for association with a particular set of caching properties. For example, a memory-mapped video I/O buffer may be tagged with a MM.sub.-- IO.sub.-- VBUF tag designating the caching properties of write-back cacheability with weak read/write ordering. Low-level operating system software, such as the Hardware Abstraction Language (HAL) interface of the Windows NT.TM. operating system or device driver software, initialize the memory regions, the cache and make symbolic associations between the memory regions and the cache.

Abstract: A dye solution reservoir system for a dye laser comprises a dye solution reservoir, main fluid circuit means for circulating dye solution between the reservoir and a dye laser, and a by-pass dye replenishment loop between the reservoir and the laser for (1) diverting a portion of the solution from the main circuit, (2) filtering substantially all solute, including the dye and other particles from that portion of the solution, (3) replenishing the solution by adding fresh dye solute, and (4) returning the replenished solution to the main circuit. In a preferred embodiment, the solution is filtered by a first filter for removing the dye solute and a second filter for removing degradation by-products and particulate matter. Reverse osmosis may be advantageously used as a part of this filtrate system. The advantage of such systems is a substantial reduction in the required reservoir capacity and enhanced dye recoverability.