32results about How to "Reduce the number of recycling" patented technology

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 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.

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.

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.