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32results about How to "Simplify follow-up" patented technology

Finite element simulation model for simulating real human brain electrical characteristic distribution

A finite element simulation model for simulating real human brain electrical characteristic distribution is obtained through simulation of a human brain MRI or CT image. The model comprises a scalp layer, a skull layer, a cerebrospinal fluid layer, a pallium layer, an alba layer, a ventricle structure and an eyeball structure composed of a sclera structure and a vitreous body structure, wherein the ventricle structure is an independent structure, and therefore follow-up operation is simplified. The electrical conductivity and relative dielectric constant of the finite element simulation model are identical with those of the real human brain tissue and can be selected from an NIREMF public database according to actual requirements within a magnetic field frequency band of 10 GHz - 100 GHz, and the numerical values of the electrical conductivity and relative dielectric constant are assigned to the finite element simulation model by means of finite element simulation software. By the adoption of the finite element simulation model, real induced electromagnetic field distribution generated in a human brain under magnetic stimulation can be reflected, and the precision and reliability of simulation study are improved greatly.
Owner:INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI

Preparation method and application of fatty dioic acid derivative

The present invention discloses a preparation method and application of a fatty dioic acid derivative. The method is as below: first reacting long-chain fatty dioic acid with thionyl chloride to obtain acyl chloride; reacting acyl chloride with t-butanol and removing chlorine group to obtain long-chain tert-butyl fatty dioic acid; then reacting the tert-butyl fatty dioic acid with N-hydroxy succinimide to obtain long-chain fatty dioic acid succinimidyl tert-butyl ester; reacting long-chain fatty dioic acid succinimidyl tert-butyl ester with L- glutamic acid-1-t-butyl ester to obtain tert-butyl long-chain aliphatic diacyl-L-Glu-OtBu; then reacting tert-butyl long-chain aliphatic diacyl-L-Glu-OtBu with N-hydroxysuccinimide to obtain tert-butyl long-chain aliphatic diacyl-L-Glu(OSu)-OtBu; and finally, removing the fatty dioic acid derivative in the tert-butyl long-chain aliphatic diacyl-L-Glu(OSu)-OtBu to obtain long-chain fatty dioic acid derivative. The method has the advantages of simple route operation, controllable quality, suitability for industrial scale production, low cost, simple purification, and is applicable to the preparation of high purity insulin analogues.
Owner:ZHUHAI UNITED LAB

Control method and device for virtual character in game, electronic equipment and storage medium

The invention provides a control method and device for a virtual character in a game, electronic equipment and a storage medium, and provides a first following control on a graphical user interface ofa first terminal in response to the fact that movement information and position information between the first terminal and a second terminal meet a game behavior rule; and in response to a triggeringoperation acting on the first following control, controlling the first virtual character to follow a second virtual character to act in a game scene. Thus, the second virtual character followed by the first virtual character can be determined according to the movement information and the position information between the first terminal and the second terminal, and a proper following object can bematched according to the movement information and the position information of players and teammates, so that selection and determination of character following are facilitated, the following operationis simplified, and the method is simple, convenient and fast, can effectively save the selection time of the following target, facilitates the improvement of the efficiency of the following operation, and also can reduce the probability of misoperation.
Owner:NETEASE (HANGZHOU) NETWORK CO LTD

Flue gas recirculation sludge spouted fluidized bed incineration system and method

The invention relates to a flue gas recirculation sludge spouted fluidized bed incineration method. The method includes the steps that when an fluidized bed incinerator conducts incineration, part of low temperature flue gas and part of primary air are led into an incineration dense-phase zone in a manner of spouted air, and the incineration dense-phase zone is in the spouted fluidized state; the remaining part of primary air is led into the incineration dense-phase zone through an air distribution plate; in this way, the incineration dense-phase zone is in the spouted fluidized state all the time; and meanwhile, the remaining part of primary air is led into the incineration dense-phase zone through the air distribution plate, the air in the above two manners and the flue gas are led in a mutual matched manner, the problem that in the prior art, an air distribution plate is blocked due to the fact that air is led in through the air distribution plate only is solved. Meanwhile, an incineration system using the above incineration method is disclosed. The total flow ratio of the primary air to the low-temperature flue gas is 0.48-0.96:1; and by means of the above proportion, the incineration effect of the incineration system is better.
Owner:WUXI GUOLIAN ENVIRONMENTAL SCI & TECH

Method for preparing rhodium chloride through recovering rhodium from incinerated waste rhodium residues

The invention provides a method for preparing rhodium chloride through recovering rhodium from incinerated waste rhodium residues. The method comprises the steps of firstly carrying out aerobic high-temperature roasting on waste catalyst roasting rhodium residues with incompletely removed organic matters, thus thoroughly removing the organic matters, and obtaining rhodium ash; then adding hydrofluoric acid and perchloric acid into the rhodium ash for pretreating, adding hydrochloric acid and hydrogen peroxide for directly dissolving the rhodium residues, and filtering to obtain a coarse rhodium acid solution; finally adopting an ion exchange method for the coarse chlororhodic acid solution to remove ion impurities such as Fe, Ni and Ca, and then concentrating and drying to obtain rhodium chloride hydrate. According to the method provided by the invention, a roasted rhodium residue post-treatment process is simplified, the efficiency is high, the rhodium loss is less, and the rhodium yield is larger than 99 percent.
Owner:CNOOC TIANJIN CHEM RES & DESIGN INST +1

Preparation method for reductive coenzyme Q10

The invention discloses a method for preparing reductive coenzyme Q10 from oxidative coenzyme Q10. In most conventional production processes for reductive coenzyme Q10, iron powder, zinc dust and sodium hydrosulfite are employed and are all solids, reduction reaction is heterogeneous phase reaction, so workshop operation is inconvenient and reaction time is long. According to the method provided by the invention, oxidative coenzyme Q10 is used as a raw material, stannous chloride is used as a reducing agent, a small amount of acid is added drop by drop so as to control a reaction system to be weakly acidic, continuous stirring reaction is carried out in a solvent at 50 to 70 DEG C, then nitrogen is introduced for protection, and purifying and crystallization are carried out after completion of the reaction so as to obtain the reductive coenzyme Q10 with a purity of no less than 95%; and the stannous chloride is recovered through electrolysis after completion of the reaction, obtained stannous chloride is reused for reduction of coenzyme Q10, so reutilization and continuous reaction are realized. The reductive coenzyme Q10 prepared in the invention has high purity and is safe and reliable; and the reducing agent is regenerable and reusable, so the method is environment-friendly and is a green coenzyme Q10 synthesis method.
Owner:ZHEJIANG NHU CO LTD

Character processing method and device

The invention provides a character processing method and device. The method comprises the steps of: reading a first character string stored in a data source file in an EXCEL format; substituting the first character string according to a preset character string substituting relation, and storing a second substituted character string in a blank EXCEL file; and converting the EXCEL file for storing the second character string into a comma separated value CSV formatted file. By employing the character processing method and device, the error rate can be lowered, and the utilization efficiency can be increased.
Owner:BEIJING AEONMED

Method for clearing off scratch files

The invention discloses a method for clearing off scratch files, and belongs to the technical field of maintenance of server systems. A route for monitoring and clearing the scratch files is appointed, the space occupation percentage of an appointed working partition is scanned by a preset time interval, all files in a working log are traversed if the space occupation percentage of the working partition exceeds a percentage threshold value, the space occupation percentage of the working partition is counted again after traversing is completed, clearing is ended if the space occupation percentage of the working partition after recounting is smaller than the percentage threshold value, and otherwise an expire threshold date is delayed. With the method for clearing off the scratch files, it is guaranteed that sufficient operation space is kept in the working partition of a server, useful files are stored as many as possible, meanwhile, the work of regular check, follow-up, treatment and others can be simplified for operation and maintenance staff, and the method has quite good application and popularization value.
Owner:SHANDONG INSPUR COMML SYST CO LTD

Water collecting and chip collecting device

The invention discloses a water collecting and chip collecting device. The device comprises an outer protective box, wherein the top and the bottom of the outer protective box are provided with open structures, a chip collecting plate, a reversible filter plate and a water collecting box are arranged in the outer protection box, the reversible filter plate comprises a front baffle plate, a rear baffle plate and a filter screen plate, the front baffle plate and the rear baffle plate are welded through two shaft collars, the included angle between the front baffle plate and the rear baffle plateis an obtuse angle, a gap groove is formed in the joint of the front baffle plate and the rear baffle plate, the filter screen plate comprises two side screen hole plates and a transverse screen holeplate connecting the two side screen hole plates, and filter screens are arranged on the transverse screen hole plate and the two side screen hole plates. According to the device, through the ingenious design structure, a cutting fluid entrained in cut redundant metal scraps can be recycled, the metal scraps are collected separately, so that the recycling of the cutting fluid is realized, the userate of the cutting fluid is greatly improved, and the using cost of the cutting fluid is reduced.
Owner:鹰普机械(宜兴)有限公司

Treatment process and device for municipal sewage multistage A/O combined nitrogen and phosphorus removal

PendingCN109485201AImprove biological phosphorus removal efficiencyEnhance the phosphorus removal capacity of the systemWater contaminantsBiological treatment apparatusChemistryMunicipal sewage
The invention relates to a treatment process and device for municipal sewage multistage A / O combined nitrogen and phosphorus removal, and particularly discloses a municipal sewage treatment process. The device comprises a pretreatment system, a stage water inlet system, a phosphorus removal system, a nitrogen removal system, a reflowing system and a carbon source addition system. Pretreated domestic sewage enters a nitrogen and phosphorus removal system in a stage dividing manner, phosphorus and carbon are removed through a primary oxygen deficit system, a primary anaerobic system and a primary aerobiotic system, the domestic sewage enters a denitrification system formed by a secondary oxygen deficit system and a secondary aerobiotic system, a film component is communicated with the bottomof a tank and covers the bottom of the tank, an unpowered inner cycle is achieved by an interval aeration mode, and nitrogen is removed. The device has the advantages that an optimized nitrogen and phosphorus removal system improves phosphorus and nitrogen removal efficiency, outlet water quality is improved by the film component, treatment of sewage is omitted, investment of a power device is reduced by the formed unpowered inner cycle, cost is effectively reduced, and multistage feed parameters can be flexibly adjusted to adapt to change of water quality.
Owner:SICHUAN JUNHE ENVIRONMENTAL PROTECTION

Semiconductor test data processing method and device

The invention provides a semiconductor test data processing method, which comprises the following steps of: reading test data with the same device name under different wafers or crystal grains in batches from a database, and determining the test data corresponding to the device name; determining a selected device name according to a user demand, extracting test data corresponding to the selected device name, and preprocessing the test data; and grouping the extracted test data, determining a grouping number based on a specific quantile, and obtaining a quantile corresponding to the specific quantile based on the minimum value of the group corresponding to the adjacent grouping number and the corresponding quantile thereof. Effective quantile calculation and data statistics can be carried out under limited resource configuration, the analysis complexity is simplified, and the efficiency is high. The invention also provides a semiconductor data processing device, which can realize the data processing method provided by the invention, has corresponding advantages, can better realize accurate calculation of quantiles, and is beneficial to improvement of production efficiency.
Owner:SEMITRONIX

Method, device and system for realizing remote automatic packet capture

The invention provides a method, a device and a system for realizing remote automatic packet capture. The method is applied to local main control equipment, and comprises the following steps: establishing connection with remote equipment; issuing an automatic packet capture instruction to the remote device to enable the remote device to capture a packet according to a preset filtering condition, and sending the obtained packet capture file back to the local main control device after judging that the packet capture needs to be stopped according to a preset triggering condition; storing the packet capture file returned by the remote device; and analyzing and classifying the packet capture files returned by the remote device to obtain different types of frames. Automatic package capture can be achieved, manpower input is saved, and the working efficiency is improved; after package capture is completed, the local main control equipment can run an automatic program to unpack wireless packages, automatically classify captured wireless air interface packages and store different types of packages in different folders, frames needing to be checked are conveniently and rapidly positioned, subsequent work is simplified, and labor cost is saved.
Owner:SPREADTRUM SEMICON(CHENGDU) CO LTD

Production method for low-carbon acetate

The invention relates to a production method for low-carbon acetate. In the method, a catalyst based on an ionic liquid is employed to catalyze low-carbon olefin and acetic acid to be directly subjected to an additive polymerization reaction to produce the low-carbon acetate, wherein the cation in the ionic liquid is represented as the following structure formula, and the anions include: HSO4<->, CF3SO3<->, NTf2<->, H2PO4<->, PW12O40<3->, p-CH3-(C6H4)SO3<->, PMo12O40<3->, H2PW12O40<->, X<->, PF6<-> or SbF6<->. The ionic liquid catalyst can convert mixed butene into sec-butyl acetate at high selectivity. The catalyst is stable in structure and is easy to separate. The production method is simple in follow-up operations, is less in side products, is low in corrosion and is low in environment pollution.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI

A method for preparing fatty diacid derivatives and its application

The present invention discloses a preparation method and application of a fatty dioic acid derivative. The method is as below: first reacting long-chain fatty dioic acid with thionyl chloride to obtain acyl chloride; reacting acyl chloride with t-butanol and removing chlorine group to obtain long-chain tert-butyl fatty dioic acid; then reacting the tert-butyl fatty dioic acid with N-hydroxy succinimide to obtain long-chain fatty dioic acid succinimidyl tert-butyl ester; reacting long-chain fatty dioic acid succinimidyl tert-butyl ester with L- glutamic acid-1-t-butyl ester to obtain tert-butyl long-chain aliphatic diacyl-L-Glu-OtBu; then reacting tert-butyl long-chain aliphatic diacyl-L-Glu-OtBu with N-hydroxysuccinimide to obtain tert-butyl long-chain aliphatic diacyl-L-Glu(OSu)-OtBu; and finally, removing the fatty dioic acid derivative in the tert-butyl long-chain aliphatic diacyl-L-Glu(OSu)-OtBu to obtain long-chain fatty dioic acid derivative. The method has the advantages of simple route operation, controllable quality, suitability for industrial scale production, low cost, simple purification, and is applicable to the preparation of high purity insulin analogues.
Owner:ZHUHAI UNITED LAB

Method for preparing high-purity fatty acid derivative

The invention provides a method for preparing a fatty acid derivative. The preparation method comprises the following specific steps: firstly, reacting long-chain fatty acid with Nhydroxysuccinimide to obtain long-chain fatty acid succinimide ester; then reacting with Lglutamic acid 1benzyl ester to obtain long-chain fatty acyl-Glu(OSus)-OBn; and finally, removing benzyl of the long-chain fatty acyl-Glu(OSus)-OBn to obtain the high-purity long-chain fatty acid derivative. The route of the method has the following advantages: (1) the reaction conditions are mild, and the reaction efficiency ishigh; (2) the operation is simple and convenient, the cost is low, the purification is easy, and the method is more suitable for preparing GLP1 analogues.
Owner:江苏万邦医药科技有限公司

Water quality sample collector

The invention provides a water quality sample collector which comprises a cylinder body (10), openings are formed in two ends of the cylinder body (10), and a handle (13) is arranged on the cylinder body (10); a filter screen (11) and a blade type one-way valve (12) are arranged at an opening in a bottom end of the cylinder body (10), the blade type one-way valve (12) is located above the filter screen (11), and the filter screen (11) is used for filtering impurities in water; and the blade type one-way valve (12) can be opened under the action of water flow and is sealed under the action of gravity of water. According to the water quality sample collector provided by the invention, the filter screen is arranged at the opening in the bottom such that a water sample can be filtered in a collecting process, the subsequent work is simplified, and the representativeness of the water sample is also ensured. The blade type one-way valve can enable water to smoothly enter the cylinder body and guide the water to slowly rotate and rise, a water sample on the same layer as a sampler is reserved, and the primitiveness, representativeness and scientificity of the sample are guaranteed.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +2

A kind of method that reclaims rhodium and prepares rhodium chloride from burning waste rhodium slag

The invention provides a method for preparing rhodium chloride through recovering rhodium from incinerated waste rhodium residues. The method comprises the steps of firstly carrying out aerobic high-temperature roasting on waste catalyst roasting rhodium residues with incompletely removed organic matters, thus thoroughly removing the organic matters, and obtaining rhodium ash; then adding hydrofluoric acid and perchloric acid into the rhodium ash for pretreating, adding hydrochloric acid and hydrogen peroxide for directly dissolving the rhodium residues, and filtering to obtain a coarse rhodium acid solution; finally adopting an ion exchange method for the coarse chlororhodic acid solution to remove ion impurities such as Fe, Ni and Ca, and then concentrating and drying to obtain rhodium chloride hydrate. According to the method provided by the invention, a roasted rhodium residue post-treatment process is simplified, the efficiency is high, the rhodium loss is less, and the rhodium yield is larger than 99 percent.
Owner:CNOOC TIANJIN CHEM RES & DESIGN INST +1

Waterproof agent for surface of bridges and process for waterproofing surface of bridges using that

The present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same. More specifically, the present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same, for forming a coating layer, which cures in a short time after the application of the bridge deck waterproof material, effectively bonds with the ground surface, and provides excellent durability and water resistance to the bridge deck, on concrete and steel plate bridge decks, thereby preventing deterioration of the bridge deck. The present invention comprises: a lower waterproof material, mixed with 91-95 wt% of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol polymer and 5-9 wt% of admixture, and coated on the bridge deck; a middle waterproof material, mixed with 15-35 wt% of MMA resin, 32.5-42.5 wt% of calcium carbonate, 7.5-17.5 wt% of silica sand No. 3, and 20-30 wt% of silica sand No. 5, and coated on the lower waterproof material; and an upper waterproof material, mixed with 45-55 wt% of 2-chlorobutadiene polymer, 25-35 wt% of toluene or xylene, and 15-25 wt% of sprayed asphalt, and coated on the middle waterproof material.
Owner:SAM JOONG C M TECH

Self-adhesive long-acting slow-release essential oil microcapsule and preparation method and application thereof

The invention discloses a self-adhesive long-acting slow-release essential oil microcapsule and a preparation method and an application thereof. The method comprises the following steps of: uniformly mixing essential oil, a reaction monomer, an auxiliary emulsifying agent, oil-soluble initiator and a newly-added oil-soluble crosslinking agent to obtain an essential oil / monomer mixed solution; adding an aqueous solution of an emulsifying agent; pre-emulsifying in a shearing and stirring state for 10-20 minutes; performing ultrasonic dispersion in an ice-water bath to obtain a fine emulsified liquid; and performing a polymerization reaction on the fine emulsified liquid in a nitrogen atmosphere in a shearing and stirring state at the temperature of 65-70 DEG C for 3-6 hours, and cooling after finishing reaction to obtain self-adhesive long-acting slow-release essential oil microcapsule rubber latex. The preparation method has the advantages of ready availability of raw materials, simple process, high good controllability over the morphological structure of the microcapsule, no relevance to organic solvents and suitability for industrial production; and the prepared microcapsule has high structural strength, a good slow release effect, and high self-adhesive properties on substrates such as fibers and the like. The invention further discloses a self-adhesive long-acting slow-release essential oil microcapsule and an application thereof.
Owner:HANGZHOU WENSLI SILK DIGITAL PRINTING CO LTD +1

Flue gas circulating sludge spouting fluidized bed incineration system and method

The invention relates to a flue gas recirculation sludge spouted fluidized bed incineration method. The method includes the steps that when an fluidized bed incinerator conducts incineration, part of low temperature flue gas and part of primary air are led into an incineration dense-phase zone in a manner of spouted air, and the incineration dense-phase zone is in the spouted fluidized state; the remaining part of primary air is led into the incineration dense-phase zone through an air distribution plate; in this way, the incineration dense-phase zone is in the spouted fluidized state all the time; and meanwhile, the remaining part of primary air is led into the incineration dense-phase zone through the air distribution plate, the air in the above two manners and the flue gas are led in a mutual matched manner, the problem that in the prior art, an air distribution plate is blocked due to the fact that air is led in through the air distribution plate only is solved. Meanwhile, an incineration system using the above incineration method is disclosed. The total flow ratio of the primary air to the low-temperature flue gas is 0.48-0.96:1; and by means of the above proportion, the incineration effect of the incineration system is better.
Owner:WUXI GUOLIAN ENVIRONMENTAL SCI & TECH

Horizontal fish skin descaling machine

ActiveCN103125579BIncrease descaling effectSimplify follow-upFish washing/descalingImpellerPropeller
The invention discloses a horizontal type fishskin desquamation machine which comprises a planetary gear mechanism which is driven by a motor. The planetary gear mechanism comprises a driving sun gear, a fixed planet gear and an annular gear arranged on the periphery. The annular gear is connected with a mesh-shaped rotary drum, wherein the annular gear and the rotary drum rotate synchronously. A spray head is arranged above the rotary drum, and a groove-shaped scale collecting device is arranged below the rotary drum. A feed inlet and a discharge outlet are respectively formed in two ends of the rotary drum. A spiral plate-shaped propeller and a shaggy friction bar are arranged on the inner wall of the rotary drum. The sun gear is connected with a center shaft, and a shaggy stirring rod is arranged on the center shaft. When the horizontal type fishskin desquamation machine is used, the rotary drum rotates opposite to the center shaft, and fishskin desquamation is achieved by utilizing relative motion of the stirring rod and the friction bar. Automatic motion of fishskin materials from the feed inlet to the discharge outlet is achieved by utilizing the impeller of the rotary drum. Desquamated scales are filtered by utilizing a narrow slit structure of the rotary drum. The scales are filtered and eliminated by assistance of the spray head. The horizontal type fishskin desquamation machine has the advantages of being simple in structure, low in manufacturing cost, outstanding in desquamation effect, high in working efficiency, convenient to use and the like.
Owner:珠海集元水产科技有限公司

A water collecting device

The invention discloses a water collecting and chip collecting device, which comprises an outer protective box, the top and bottom of the outer protective box are both open structures, and the outer protective box is provided with a chip collecting plate, a reversible filter plate and a water collecting plate. box, the reversible filter plate includes a front baffle, a rear baffle and a filter screen plate, the front baffle and the rear baffle are welded by two axle column rings, and the clip at the joint of the front baffle and the rear baffle The angle is an obtuse angle, and there is a slot at the joint between the front baffle and the rear baffle, and the filter screen includes two side mesh plates and a horizontal mesh plate connecting the two side mesh plates, and the horizontal mesh Filter nets are arranged on the plate and the two side mesh plates. Through the ingenious design structure, the present invention can recycle the cutting fluid mixed in the redundant metal chips, and realize the separate collection of metal chips, which not only realizes the recycling of cutting fluid, but also greatly improves the usage rate of cutting fluid , reducing the cost of cutting fluid.
Owner:鹰普机械(宜兴)有限公司

Bridge deck waterproof material and bridge deck waterproof construction method using it

The present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same. More specifically, the present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same, for forming a coating layer, which cures in a short time after the application of the bridge deck waterproof material, effectively bonds with the ground surface, and provides excellent durability and water resistance to the bridge deck, on concrete and steel plate bridge decks, thereby preventing deterioration of the bridge deck. The present invention comprises: a lower waterproof material, mixed with 91-95 wt% of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol polymer and 5-9 wt% of admixture, and coated on the bridge deck; a middle waterproof material, mixed with 15-35 wt% of MMA resin, 32.5-42.5 wt% of calcium carbonate, 7.5-17.5 wt% of silica sand No. 3, and 20-30 wt% of silica sand No. 5, and coated on the lower waterproof material; and an upper waterproof material, mixed with 45-55 wt% of 2-chlorobutadiene polymer, 25-35 wt% of toluene or xylene, and 15-25 wt% of sprayed asphalt, and coated on the middle waterproof material.
Owner:SAM JOONG C M TECH

Preparation method of BOC-L-asparagine

The invention discloses a preparation method of BOC-L-asparagine. The preparation method comprises the following steps: using L-asparaginate and di-tert-butyl dicarbonate ester as raw materials and water as a reaction solvent to carry out a reaction under the alkaline condition of pH 9-10 to generate BOC-L-asparagine, acidizing a reaction liquid to pH 4.0-4.5 to precipitate out a BOC-L-asparagine crude product, carrying out suction filtration, washing with water and drying to obtain a BOC-L-asparagine refined product. The preparation method of BOC-L-asparagine has advantages of mild reaction condition, fast reaction and lower cost of raw materials. As water is used as the reaction solvent, the subsequent operation is simple, and BOC-L-asparagines crystal can be precipitated out only by acidifying. The method is beneficial to industrial production, is environment friendly and has high safety factor.
Owner:宜兴市前成生物有限公司

Character processing method and device

The invention provides a character processing method and device. The method comprises the steps of: reading a first character string stored in a data source file in an EXCEL format; substituting the first character string according to a preset character string substituting relation, and storing a second substituted character string in a blank EXCEL file; and converting the EXCEL file for storing the second character string into a comma separated value CSV formatted file. By employing the character processing method and device, the error rate can be lowered, and the utilization efficiency can be increased.
Owner:BEIJING AEONMED

A kind of preparation method of boc-l-asparagine

The invention discloses a preparation method of BOC-L-asparagine. The preparation method comprises the following steps: using L-asparaginate and di-tert-butyl dicarbonate ester as raw materials and water as a reaction solvent to carry out a reaction under the alkaline condition of pH 9-10 to generate BOC-L-asparagine, acidizing a reaction liquid to pH 4.0-4.5 to precipitate out a BOC-L-asparagine crude product, carrying out suction filtration, washing with water and drying to obtain a BOC-L-asparagine refined product. The preparation method of BOC-L-asparagine has advantages of mild reaction condition, fast reaction and lower cost of raw materials. As water is used as the reaction solvent, the subsequent operation is simple, and BOC-L-asparagines crystal can be precipitated out only by acidifying. The method is beneficial to industrial production, is environment friendly and has high safety factor.
Owner:宜兴市前成生物有限公司

Method and device for processing intercepted short messages

Embodiments of the present invention propose a method and device for processing intercepted short messages, the method comprising: obtaining the intercepted short messages; identifying the interception type of the intercepted short messages; and displaying corresponding operation options according to the interception types of the intercepted short messages. Through the method and device of the embodiment of the present invention, based on different types of interception, it is possible to recommend different follow-up operations to the user for the intercepted short message, thereby more catering to the needs of the user, simplifying the follow-up operation of the intercepted short message, and saving additional operations The extra time cost of the step.
Owner:TENCENT TECH (SHENZHEN) CO LTD

A kind of synthetic method of promestriene

The invention relates to a method for synthesizing the compound promestrine, which is a derivative of estradiol, has estrogen characteristics, and plays an important role in regulating and promoting the normal development of female sexual organs and side features. The present invention adopts estradiol as a starting material, and prepares 3-propoxyl-17β-hydroxyestradiol-1,3,5(10)-triene by reacting it with n-bromopropane in an acetone solvent under the catalysis of sodium hydroxide base , and then use sodium hydride as a basic catalyst in tetrahydrofuran solvent, and methyl iodide as a methylating reagent to prepare promestriene. The synthesis method has the advantages of mild reaction conditions, low solvent or reagent toxicity, convenient post-treatment, high yield, low synthesis cost, and environmental friendliness.
Owner:中国人民解放军军事科学院防化研究院
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