摘要:
Provided is an operating method of a data storage device including a plurality of nonvolatile memory devices. The operating method includes the steps of: dividing storage areas of the nonvolatile memory devices into a first memory area and a second memory area; determining wear levels of each of the first memory area and the second memory area; and varying a ratio of the first memory area and the second memory area according to the determined wear levels.
摘要:
A nonvolatile memory apparatus includes: a memory controller coupled; and a memory area comprising a plurality of memory blocks controlled by the memory controller. The memory controller sets a plurality of physical blocks corresponding to the plurality of memory blocks, and sets a plurality of logical blocks which are mapping targets of the physical blocks such that a size of the logical blocks and a size of the physical blocks are asymmetrical.
摘要:
Solid-state storage systems and methods are provided for controlling a wear leveling process for uniform use of the memory cells that replaces worn memory blocks with less frequently used memory blocks. The wear leveling process is performed by changing the physical locations of the storage cells within each memory zone or plane. Reference values of target memory block erase counts and worn memory block erase counts are used for searching target memory blocks to be used as replacements.
摘要:
Provided is an operating method of a data storage device including a plurality of nonvolatile memory devices. The operating method includes the steps of: dividing storage areas of the nonvolatile memory devices into a first memory area and a second memory area; determining wear levels of each of the first memory area and the second memory area; and varying a ratio of the first memory area and the second memory area according to the determined wear levels.
摘要:
Disclosed is a method for screening an antioxidant using mutant bacteria and chlorophyllide, and an antioxidant screened by the same method. The method provides for screening of an antioxidant by monitoring growth profiles of specific mutant bacteria in filter discs or medium blocks containing chlorophyllide added thereto, and an antioxidant screened by the same method. By monitoring growth profiles of mutant bacteria using mutant bacteria and chlorophyllide, screening of an antioxidant is possible on an industrial scale. In particular, the antioxidant screening method is useful for selective screening of an amphiphilic antioxidant. Therefore, it is possible to screen and commercialize low-toxic and effective antioxidants used in various food and cosmetic additives, as well as therapeutic medicines.
摘要:
A method of making a photosynthetic bacteria variant which that can produce hydrogen in both day and night. In one embodiment hydrogen is produced in a light independent manner by adding pyruvate lyase and formate lyase complex to a photosynthetic strain of Rhodobacter sphaeroides. A preferred photosynthetic bacteria variant that can produce hydrogen in both day and night from Rhodobacter sphaeroides is KCTC 12085.
摘要:
The present disclosure relates to methods for producing hydrogen using photosynthetic bacteria comprising a step of culturing the photosynthetic bacteria in the presence of alcohol at the condition under which the photosynthesis occurs. The present methods are cost-effective and have a high applicability due to the increased hydrogen productivity compared to the conventional methods in addition to not being sensitive by the inhibitory action by ammonium ion present in the culture. Thus the present methods are particularly useful for producing hydrogen using organic wastes which contains large amount of ammonia therein.
摘要:
Solid-state storage systems and methods are provided for controlling a wear leveling process for uniform use of the memory cells that replaces worn memory blocks with less frequently used memory blocks. The wear leveling process is performed by changing the physical locations of the storage cells within each memory zone or plane. Reference values of target memory block erase counts and worn memory block erase counts are used for searching target memory blocks to be used as replacements.
摘要:
Disclosed is a method for screening an antioxidant using mutant bacteria and chlorophyllide, and an antioxidant screened by the same method. More specifically, provided is a method for easy screening of an antioxidant by monitoring growth profiles of specific mutant bacteria in filter discs or medium blocks containing chlorophyllide added thereto, and an antioxidant screened by the same method.The present invention enables easy screening of an antioxidant on an industrial scale, by monitoring growth profiles of mutant bacteria via the use of mutant bacteria and chlorophyllide. In particular, the antioxidant screening method in accordance with the present invention is very useful for selective screening of an amphiphilic antioxidant. Therefore, the present invention is applicable to screen and commercialize low-toxic and effective antioxidants which will be used in various food and cosmetic additives as well as therapeutic medicines.