31results about How to "Reduce the number of recycling" patented technology

The invention discloses a merging method based on non-aligned update data in a solid-state disk cache system. Based on a FTL page level mapping module, a page level mapping module structure is redesigned, a merging page mapping module structure is added, an effect of storing the non-aligned update data in the cache system, which is from a plurality of logic blocks, into a solid-state disk after being merged is achieved, and the maximum utilization rate of a physical available storage space is ensured; meanwhile, aiming at write update read loss brought in by a non-aligned update operation, performance loss of an additional read operation request, which is brought in by a write update operation, is optimized; and in the other aspect, due to a case that by merged writing, actual writing times of the solid-state disk are sufficiently reduced, the internal available storage space is utilized to the greatest extent, so that a trigger rate of an internal garbage recovery operation is reduced, thereby indirectly prolonging the service life of the solid-state disk.

The invention relates to a solid state disk garbage collection method and device, a solid state disk and a storage medium. The solid state disk garbage collection method comprises the following steps:determining a logic address and accumulated carrying times of effective data to be carried in each time of garbage collection; if the carrying frequency is greater than a preset carrying frequency threshold, adding one to the disorder degree level, and resetting the carrying frequency; if any disorder degree level is greater than a preset disorder degree level threshold value, reducing each disorder degree level preset to be written into a disorder degree level record table in an equal proportion; dividing the logic address area into a plurality of groups; and for each group, when the data volume of the valid data reaches a preset data volume, writing the valid data in the group into the data block corresponding to the group. According to the embodiment of the invention, the garbage collection frequency can be effectively reduced, and the total data volume of garbage collection is reduced, and the operation efficiency of the NAND flash memory can be improved, and the working efficiency of the solid state disk can be further improved, and the service life of the solid state disk is prolonged.

The invention relates to a method for preparing sulfur-containing bisphenol compound antioxidant by means of recycling mother liquor, which belongs to the field of synthetic rubber, polyolefin plastics and lubricating oil. Ethanol water is used as a reaction solvent, 2, 6-di-tert-buty phenol, paraformaldehyde and hydrogen sulfide or sodium hydrosulfide are used as raw materials, sodium hydroxide is used as a catalyst, and reaction is performed in a closed reactor to prepare a methylene-4426-S product. The product is separated by means of filtration and washed by the ethanol water to obtain a white crystal product. Residual reaction mother liquor mainly includes ethanol water and contains organic matters such as formaldehyde, the sodium hydroxide, Na2S, the methylene-4426-S product and the like. The reaction mother liquor is collected to serve as the reaction solvent, and condensation reaction is continued to prepare the methylene-4426-S product. The reaction mother liquor is recycled, consumption of paraformaldehyde and hydrogen sulfide or sodium hydrosulfide is reduced, and 2,6-phenol raw material conversion rate, target product yield and target product quality can be kept.

The invention discloses a method for synthesizing econazole nitrate by using a one-pot method, and belongs to the technical field of synthesis methods of econazole nitrate. The method comprises: carrying out an N-alkylation reaction under the actions of K2CO3 / KOH / Al2O3 and PEG-200 by using 1-(2,4-dichlorophenyl)-2-chloro-ethanol and imidazole as raw materials to obtain toluene-containing imidazoleethanol; and carrying out an O-alkylation reaction on the toluene-containing imidazole ethanol and p-chlorobenzyl chloride under the actions of K2CO3 / KOH / Al2O3 and PEG-200 to obtain econazole nitrate. According to the method of the invention, the intermediate imidazole ethanol is directly subjected to the O-alkylation reaction without water washing to achieve nearly neutral state, re-crystallization and drying, so that the environmental pollution caused by drying is reduced, the imidazole ethanol dissolving process is shortened, the reaction efficiency is improved, and the solvent recovery frequency is reduced; and after the O-alkylation reaction is finished, the impurity removal is performed before the acidification, so that the high product viscosity caused by many impurities is greatlyreduced, the solid-liquid separation is easy to realize, the one-pot production is realized, the cost is low, the operation is simple and convenient, and the method is suitable for industrial popularization.

The invention discloses a memory calling method, which comprises: regularly obtaining all memory data blocks corresponding to method functions from a server; saving all the obtained memory data blocks to the disk space of the mobile terminal; When the method function is used, it is judged whether the memory data block corresponding to the method function in the memory has been reclaimed; when reclaimed, the memory data block corresponding to the method function is searched from the disk space of the mobile terminal; The data block is written to memory to run the method function. The embodiment of the invention also discloses a mobile terminal and a computer-readable storage medium. As a result, the operation frequency of memory collection and generation can be reduced.

The present application relates to a method for clearing storage space, the method comprising: acquiring the number of channels connected to the memory and the controller and chip information corresponding to each channel, the chip information including data storage conditions of multiple data blocks; according to The chip information determines the data block to be recycled under each channel; judges whether there is valid data in the data block to be recycled; when there is valid data in the data block to be recycled, recycles the valid data; The data blocks to be reclaimed under the channels are erased. According to the above method, a unified method is adopted to determine the data blocks to be recycled under each channel, so that the difference in the amount of valid data in the data blocks to be recycled under each channel is small, reducing the number of times garbage collection is performed under each channel, and improving This improves the efficiency of freeing available space for data blocks.

The invention relates to a method for preparing sulfur-containing bisphenol compound antioxidant by means of recycling mother liquor, which belongs to the field of synthetic rubber, polyolefin plastics and lubricating oil. Ethanol water is used as a reaction solvent, 2, 6-di-tert-buty phenol, paraformaldehyde and hydrogen sulfide or sodium hydrosulfide are used as raw materials, sodium hydroxide is used as a catalyst, and reaction is performed in a closed reactor to prepare a methylene-4426-S product. The product is separated by means of filtration and washed by the ethanol water to obtain a white crystal product. Residual reaction mother liquor mainly includes ethanol water and contains organic matters such as formaldehyde, the sodium hydroxide, Na2S, the methylene-4426-S product and the like. The reaction mother liquor is collected to serve as the reaction solvent, and condensation reaction is continued to prepare the methylene-4426-S product. The reaction mother liquor is recycled, consumption of paraformaldehyde and hydrogen sulfide or sodium hydrosulfide is reduced, and 2,6-phenol raw material conversion rate, target product yield and target product quality can be kept.

The invention provides a flash memory data control method and system. The control method includes the following steps that the logical block number and deviation number of pages in a block are obtained according to logic page number of read / write data; whether a corresponding first physical block number exists or not is judged according to the logical block number and a first preset mapping table, and if not, a blank physical block is searched for to carry out operation of data writing or read finishing; if yes, physical page tables in the first physical block number are sequentially read to determine whether the physical page corresponding to the deviation number of the pages in the block exists or not, and if yes, data writing or reading is carried out on the corresponding physical page; if not, whether a corresponding second physical block number exists or not is determined according to the first physical block number and a second preset mapping table, and if yes, physical page tables of the second physical block number are sequentially read to determine whether the physical page corresponding to the deviation number of the pages in the block exists in the second physical block number or not.

Disclosed are a method for memory allocation during application start in a terminal and a system thereof, relating to terminal application technologies. On the basis of the recorded size of a Java heap actually allocated after every start of an application, a predicted value of the Java heap at the time of next start of the application is computed (102), and initial allocation of the Java heap for the application is performed on the basis of the predicted value of the Java heap when the application is started next time (103). The frequency of garbage collection during application start is effectively reduced without increasing total memory, thereby decreasing the time for application start and improving the smoothness of start animations.

The invention discloses an address mapping method in a flash memory conversion layer of a solid-state disk. The implementation steps are as follows: 1) Establish a cache mapping table, a cache split table, a cache conversion table and a global conversion directory in SRAM in advance; 2) Receive an IO request , if it is a write request, skip to step 3), otherwise, skip to step 4); 3) first search the hit status of the current IO request in the SRAM table, complete the write operation according to the hit mapping information, and according to the hit type and valve The value size caches the mapping information; 4) Prioritizes the hit status of the current IO request in the SRAM table, and completes the read operation through the hit mapping information in the SRAM. The present invention has the advantages of being able to improve the random write performance of the solid-state disk while prolonging the service life of the solid-state disk, high efficiency of the flash conversion layer, high hit rate of address mapping information in the SRAM, and less additional read and write operations between the SRAM and the solid-state disk Flash .

The invention provides a preparation method of oxytetracycline hydrochloride. A method of co-boiling raw materials and alcohol for dewatering is adopted to remove moisture in oxytetracycline, dissolved quantity of oxytetracycline hydrochloride in mixed liquid of subsequently-generated methanol and a little of water is reduced, yield of oxytetracyline hydrochloride is increased, subsequently-generated oxytetracycline impurities are reduced, mother liquid can be directly reused without distillation and purification of methanol therein, and consumption of methanol and calcium chloride is reduced. The preparation method has the advantages that yield is increased, cost is lowered, and environment pollution is reduced.

The invention discloses a method for synthesizing econazole nitrate by a one-pot method, which belongs to the technical field of econazole nitrate synthesis method and comprises the following steps: using 1-(2,4-dichlorophenyl)-2-chloro-ethanol and imidazole as raw material, in K 2 CO 3 / KOH / A1 2 o 3 And under the effect of PEG-200, through N-alkylation reaction, obtain the imidazole ethanol containing toluene; The imidazole ethanol containing toluene and p-chlorobenzyl 2 CO 3 / KOH / A1 2 o 3 Under the action of PEG-200, O-alkylation reaction occurs to obtain econazole nitrate; the intermediate imidazole ethanol of the present invention does not need to be washed to near neutrality, recrystallization and drying, and directly carries out O-alkylation reaction, reducing the Due to the environmental pollution caused by drying, the process of dissolving imidazole in ethanol is shortened, the reaction efficiency is improved, and the number of solvent recovery is reduced. High viscosity, easy to realize solid-liquid separation, realize one-pot production, low cost, easy to operate, suitable for industrialization promotion.

The invention discloses a merging method based on non-aligned update data in a solid-state disk cache system. Based on a FTL page level mapping module, a page level mapping module structure is redesigned, a merging page mapping module structure is added, an effect of storing the non-aligned update data in the cache system, which is from a plurality of logic blocks, into a solid-state disk after being merged is achieved, and the maximum utilization rate of a physical available storage space is ensured; meanwhile, aiming at write update read loss brought in by a non-aligned update operation, performance loss of an additional read operation request, which is brought in by a write update operation, is optimized; and in the other aspect, due to a case that by merged writing, actual writing times of the solid-state disk are sufficiently reduced, the internal available storage space is utilized to the greatest extent, so that a trigger rate of an internal garbage recovery operation is reduced, thereby indirectly prolonging the service life of the solid-state disk.

The invention discloses a method of preparing polyphenylene sulfide with a synthesis mother solution and relates to the field of high polymer materials. Sodium sulfide and p-dichlorobenzene are taken as raw materials; the synthesis mother solution is taken as a solvent; sodium hydroxide is taken as an assistant. Particularly, the method sequentially comprises the steps of feeding, dehydration, 1,4-p-dichlorobenzene dissolution, dropwise adding, pre-polymerization, filtering, washing, drying and package to form a polyphenylene sulfide product at last. The method takes the synthesis mother solution as the solvent; the dosage of pure N-methyl pyrrolidone in a polyphenylene sulfide resin synthesis process can be reduced; the recovery cost is greatly lowered; low molecular weight polyphenylene sulfide resin in the synthesis mother solution, sodium sulfide and 1,4-p-dichlorobenzene carry out polymerization reaction again by the action of a catalyst; the waste of the low molecular weight polyphenylene sulfide resin is reduced in a recovery process of the synthesis mother solution; the synthesis mother solution also contains a certain amount of catalyst; the dosage of the catalyst is reduced in the synthesis process, so that the production cost is further lowered.

The invention discloses a method for synthesizing a sulfur-containing bisphenol compound antioxidant and belongs to the technical field of antioxidants. The method comprises the steps as follows: adopting 55-65% of ethanol water solution as a reaction solvent and 2,6-di-tert-butylphenol, paraformaldehyde and sodium hydrosulfide as reaction raw materials, adding a crystallization nucleating agent, carrying out thio-condensation reaction in a closed reaction kettle, and preparing a methylene-4426-S product as the antioxidant. A reaction mother solution obtained after reaction can be recycled as a reaction solvent. The crystallization nucleating agent has the effect of a phase-transfer catalyst, which is favorable for reaction of oil-soluble materials and water-soluble materials and increment of the yield. The method has the characteristics of simple production process, high product yield, low production cost, good quality and convenience for industrial production.

A data storage dynamic recovery processing method and storage device, the method comprising: receiving a data write command, and obtaining a logical address in the data write command (step S101); in accordance with a pre-established mapping table, judging whether a storage unit exists which corresponds to the logical address (step S102); if no storage unit corresponding to the logical address exists, adding 1 to an effective logical capacity and updating the mapping table (step S103); in accordance with the mapping table, computing an effective logical capacity (step S104); in accordance with the size of the effective logical capacity, dynamically using a single-level cell SLC block and a triple-level cell TLC block for storing data (step S105); in accordance with the size of the effective logical capacity and the number of free SLC blocks, dynamically using SLC blocks for internally recovering data and / or TLC blocks for recovering data (step S106); in accordance with the size of an effective logical capacity, the use of various recovery modes for dynamically recovering data allows for effectively reducing a recovery count while enhancing product performance and stability.

The invention discloses a method for synthesizing a sulfur-containing bisphenol compound antioxidant and belongs to the technical field of antioxidants. The method comprises the steps as follows: adopting 55-65% of ethanol water solution as a reaction solvent and 2,6-di-tert-butylphenol, paraformaldehyde and sodium hydrosulfide as reaction raw materials, adding a crystallization nucleating agent, carrying out thio-condensation reaction in a closed reaction kettle, and preparing a methylene-4426-S product as the antioxidant. A reaction mother solution obtained after reaction can be recycled as a reaction solvent. The crystallization nucleating agent has the effect of a phase-transfer catalyst, which is favorable for reaction of oil-soluble materials and water-soluble materials and increment of the yield. The method has the characteristics of simple production process, high product yield, low production cost, good quality and convenience for industrial production.

The invention provides an off-line monitoring method for NDC thin films. The off-line monitoring method comprises the steps that firstly, a protection layer and a bonding layer are developed on a monitoring wafer in sequence; secondly, after a copper layer is developed on the bonding layer, one NDC thin film is developed on the copper layer, an optical measuring machine is used for testing the NDC thin film to monitor the parameters of the NDC thin film; thirdly, a copper layer is developed on the NDC thin film formed in the second step, one NDC thin film is developed on the newly formed copper layer, and the optical measuring machine is used for testing the new NDC thin film to monitor the parameters of the new NDC thin film; fourthly, the third step is repeatedly executed. The number of use times of the monitoring wafer is limited not to be more than five. By means of the off-line monitoring method, the monitoring wafer of the NDC thin films can be used many times continuously in a factory, the number of recycling times of the monitoring wafer of the NDC thin films is reduced, and the usage amount of the monitoring wafer of the NDC thin films is reduced.