1568results about How to "Promote fragmentation" patented technology

A defragmentation technique determines the extent to which data blocks of a file are fragmented on disks of a computer and, in response, efficiently relocates those blocks if such relocation improves the on-disk layout of the file. Each indirect block of the file is examined and the current layout of the range of pointers referencing the data blocks is determined. In addition, the number of operations needed to retrieve those data blocks from disks is calculated. A potential new layout is then estimated based on an average fullness of the file system. If the potential new layout improves the fragmentation of the current layout, then the data blocks for that range are relocated, if there is sufficient free space on disk. Otherwise, the blocks are not relocated and the current on-disk layout of the file is maintained.

The invention discloses a combined drill breaking rocks by a cutting method. The combined drill comprises a drill body (1) and a rotating wheel (2), wherein a wheel palm (3) is arranged on the drill body (1); the rotating wheel (2) is arranged on the shaft neck (6) of the wheel palm (3) and is in rotary connection with the wheel palm (3); an external row of cutting gear rings (4) are arranged on the rotating wheel (2); the deviation angle alpha of the rotating wheel (2) is in a range that the absolute value of alpha is more than or equal to 20 degrees and less than or equal to 90 degrees; and a fixed cutting structure (8) with fixed cutting teeth (8a) is arranged on the drill body (1). Cutting teeth on the rotating wheel break the rocks in an alternatively scraping mode and cooperates with the cutting teeth on the fixed cutting structure to form a net-like breaking region on the pit bottom rocks, so the combined drill has the advantages of high rock-breaking efficiency, uniform wear, good cooling effect, long service life of the teeth, long working life of the bearing and long service life of the drill.

The invention provides a piezoelectric two-phase flow ultrasonic atomization spraying nozzle. The piezoelectric two-phase flow ultrasonic atomization spraying nozzle comprises a piezoelectric vibrator, an amplitude-change pole, a second end cover and a first end cover; the piezoelectric vibrator and the amplitude-change pole are connected through a connecting bolt; an air inlet connector is installed at the tail of the connecting bolt; the second end cover is fixed to the front end of the amplitude-change pole; a laval type valve element is fixed into a step hole of the amplitude-change pole and a groove of the second end cover; a liquid inlet hole is formed in the hole wall face of the step hole of the amplitude-change pole; a plurality of flow guide holes are formed in the positions, close to an outlet, of the laval type valve element in the radial direction; the first end cover is threaded connection to the second end cover; a radial positioning ring is arranged at the position of a clamping groove in the back end of the first end cover; a step type taper valve is installed on the radial positioning ring; the step type taper valve and a vibration separating plate are connected through an adjusting bolt; a resonance chamber is formed between the vibration separating plate and the top end of the first end cover; and a plurality of flexible pipes are arranged in the resonance chamber. According to the piezoelectric two-phase flow ultrasonic atomization spraying nozzle, a large number of superfine fog drops are generated under the low-energy working condition, and the shortcoming that large pulverization amount, small grain size, low power dissipation and directed spraying cannot be considered at the same time through in the traditional technology is overcome.