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28results about How to "Convenient induction" patented technology

Construction method and application of mouse gastric cancer spontaneous tumor model

ActiveCN119498254AConvenient inductioneasy to operateAnimal husbandryNitrosoSarcosine
The invention provides a construction method and application of a mouse gastric cancer spontaneous tumor model, and the construction method comprises the following steps: reducing or inhibiting the expression quantity of a TP53 gene and / or the activity of a P53 protein in a mouse body, and then giving a drug to the mouse for chemical induction to obtain the mouse gastric cancer spontaneous tumor model. Wherein the drug contains sodium nitrite and ethyl sarcosinate, and / or the drug contains an N-nitroso compound. According to the construction method of the mouse gastric cancer spontaneous tumor model, the construction of the C57 mouse gastric cancer spontaneous tumor model by using the NESS is proposed for the first time, and the tumor formation rate can reach 75% or above; the tumor formation period is short and is about 3-4 months, and the construction cost is low.
Owner:BEIJING CANCER HOSPITAL PEKING UNIV CANCER HOSPITAL

Digital management system and method based on hydraulic engineering project archives

The invention relates to the technical field of engineering informatization management, in particular to a digital management system and method based on hydraulic engineering project archives, and the method comprises the following steps: developing and establishing a special database based on a B / S architecture; establishing an engineering project information base; creating a project organization; determining a management process of the project business; summarizing project data generated by all project participation units in the project construction period and establishing a digital file; carrying out PDF digitization on the concluded and established digitized archive, the traditional paper carrier digitized document and the project external digitized document, and uploading the digitized archive to a special database to complete archiving; and the archived archives are managed. According to the digital management system and method based on the hydraulic engineering project archives, the archives can be automatically produced and archived according to the cooperative work of each construction participation unit in different project businesses in the hydraulic engineering project construction process.
Owner:GUANGXI GENGWEI TECH R&D CO LTD

Culture medium for ginseng callus culture and callus culture method

The invention provides a culture medium and a culture method for ginseng callus culture, and belongs to the technical field of plant tissue culture. The invention provides a culture medium for ginseng callus culture, B5 is used as a basic culture medium, and the culture medium also comprises DuXiexian, TDZ or KT, 2, 4-D, carbon nanotubes, sucrose and agar. The pH (Potential of Hydrogen) value of the callus induction culture medium is 5.75 to 5.85. The result of the embodiment shows that the culture medium provided by the invention can obviously improve the induction rate of the ginseng callus. Furthermore, a large number of calluses can be obtained in a short time through multiplication culture of the calluses obtained through culture of the callus induction culture medium, the obtained calluses can be directly used for synthesizing ginsenoside or used as a raw material for synthesizing ginsenoside, and then the yield of ginsenoside can be increased.
Owner:INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI

A device for testing the performance of a building waterproofing material

ActiveCN224594421UCheck authenticityImprove sealingWater storageFixed frame
The utility model belongs to waterproof material performance test technical field especially, it is related to a kind of building waterproof material performance testing device, including support frame, the support frame is used to support whole testing device, the upper left of support frame is fixedly installed with controller, and controller includes central control module, data acquisition processing module and touch control display module;Water storage bucket, the water storage bucket includes upper shell, lower shell and the middle part communication pipe between both, and the middle part of communication pipe is installed with electromagnetic valve electrically connected with controller, the bottom end of water storage bucket is detachably installed with test assembly, and the bottom end outer wall of water storage bucket is equipped with positioning assembly;Fixed frame, the fixed frame is fixedly installed in the top of support frame, and the middle part position of fixed frame is fixedly installed with electric push rod electrically connected with controller.The data obtained by the utility model are more accurate, and the real performance of waterproof material can be detected.
Owner:BEIJING ZHONGDA TIANLI INTERNATIONAL CONSTRUCTION ENGINEERING CO LTD

Central control integrated cabinet capable of improving utilization rate of layout space

A central control integrated cabinet capable of improving the utilization rate of a layout space comprises a cabinet body, a front containing groove is formed in the front end of the cabinet body, front door plates are hinged to the upper side and the lower side in the front containing groove respectively, a side containing groove is formed in the left end of the cabinet body, a side door plate is hinged to the interior of the side containing groove, a partition plate is arranged in the cabinet body, and a partition plate located on the right side of the partition plate is arranged in the cabinet body; the device is simple in structure, novel in conception, convenient to use and high in practicability; the problems that an existing central control cabinet is insufficient in space in use and inconvenient to maintain are effectively solved.
Owner:SHENZHEN CLOU ELECTRONICS

Method for increasing content of methyl cinnamate in basil essential oil

PendingCN119662342AConvenient inductionIncrease the content of methyl cinnamateEssential-oils/perfumesFatty-oils/fats productionBiotechnologyEngineering
The invention belongs to the technical field of plant essential oil production, and particularly relates to a method for increasing the content of methyl cinnamate in basil essential oil. Research shows that the basil plants are treated by cadmium, the basil can be induced to synthesize the methyl cinnamate, the effect of inducing the basil to synthesize the methyl cinnamate is good, the content of the methyl cinnamate in the basil essential oil can be at least increased by 316.89 times, the content of active substances in the essential oil can be effectively increased, and the quality of the basil essential oil is improved. The method is simple and easy to implement, and the basil essential oil rich in methyl cinnamate, which is extracted by inducing basil to synthesize methyl cinnamate, does not contain artificially added chemical substances and Cd, is high in safety and has very high application value.
Owner:SHAOGUAN COLLEGE

Spraying insecticidal atomizer

The utility model relates to the technical field of atomizing machines, in particular to a spraying and insect killing atomizing machine which comprises a positioning plate, a supporting plate is arranged at the bottom of the top of the positioning plate, a driving motor is installed in the middle of the top of the supporting plate, an installation groove is formed in the bottom of the positioning plate, and a rotating rod is fixedly connected into the installation groove. The output end of the driving motor is fixedly connected with the rotating rod, the sliding plate extends into the sliding groove and is in sliding connection with the sliding groove, and through cooperative use of the driving motor, the sliding groove, the connecting rod and the rotating rod, when the atomizer is adjusted, the driving motor needs to be started firstly, and then the rotating rod is used for rotating the positioning plate so as to set the optimal angle of the atomizer. In the adjusting process, the connecting rod is in sliding connection with the sliding plate and the sliding groove, so that the stability during operation is improved. In addition, a protective plate is installed at the top end of the supporting plate, additional protection is provided for the driving motor and the connecting rod, and therefore the practicability of the equipment is enhanced.
Owner:HEFEI XINGDAO TECHNOLOGY CO LTD

A device for comprehensive recording and archiving of information for reproductive health algorithms

ActiveCN111957585Bclear filingaccurate filingCharacter and pattern recognitionSorting
The present invention discloses a device for comprehensive collection and archiving of information for reproductive health algorithms, comprising: a bracket, a cylinder, a slide rail, a support rotation component, a control main board, a display, a collection and entry component, a classification and delivery component and an induction component. The slide rail is installed on the bottom side horizontal plate of the bracket, the cylinder is installed on one side of the vertical plate of the bracket by bolts, and two support rotation components are installed on the slide rail. The rotating motor is operated to drive the rotating gear to rotate, and the rotating gear and the matching gear are matched to drive the rotating column to rotate, so that the supporting column can slide in the limiting track and the induction component can be rolled. When in use, the cylinder can be operated to pull the supporting plate along the slide rail, so that the positions of the two induction components can be changed, and the two induction components can be respectively corresponded to negative patient materials and positive patient materials, so as to facilitate distinction and induction, and the patient's medical records can be archived more clearly, accurately and efficiently.
Owner:徐阳阳

Cable insulation support convenient to replace

The utility model discloses a cable insulation support convenient to replace, which belongs to the technical field of cable supports, and comprises a bottom plate, the top of the bottom plate is connected with a support frame, the inner side of the support frame is provided with a sliding groove, the inner side of the sliding groove is provided with a sliding block, one side of the sliding block is connected with a connecting rod, the other end of the connecting rod is connected with a support plate, and the support plate is connected with the bottom plate. An opening groove is formed in the top of the supporting plate, a plurality of mounting blocks are mounted on the inner side of the opening groove, arc-shaped clamping blocks are connected to the tops of the mounting blocks, and adjusting assemblies are arranged at the tops of the arc-shaped clamping blocks; according to the cable support, the dismounting device is arranged, the arc-shaped clamping blocks on the supporting plate are dismounted, the cable support can dismount a single arc-shaped clamping block through the designed arc-shaped clamping blocks, unnecessary dismounting is reduced, the maintenance cost is reduced, the arc-shaped clamping blocks are rapidly dismounted, and the dismounting efficiency is improved. The arc-shaped clamping blocks are convenient to replace and easy to maintain.
Owner:ZHUGAO ELECTRICAL TESTING CO LTD

Novel intelligent power distribution cabinet

The utility model discloses a novel intelligent power distribution cabinet comprising a cabinet body and a cabinet door hinged to the opening position of the cabinet body, and the surface of the cabinet door is provided with a storage assembly; the storage assembly comprises a shaft rod fixedly connected to the inner surface of the cabinet door, a sleeve arranged outside the shaft rod in a sleeving mode and movably connected with the shaft rod, a carrier plate fixedly connected to the surface of the sleeve, a clamping base fixedly connected to the surface of the carrier plate and a positioning hole formed in the surface of the carrier plate. When the interior of the cabinet body needs to be overhauled, the cabinet door is opened firstly, the carrier plate is rotated to be in a horizontal state relative to the shaft rod, the supporting plate is rotated relative to the shaft seat of the supporting frame, the supporting plate is attached to the reinforcing rib on the lower surface of the carrier plate, supporting force is provided for the carrier plate, and tools used for overhauling can be placed in the clamping seat or the positioning hole of the carrier plate. And the paper box is convenient to take, use and store after use, and is not prone to omission.
Owner:SHAANXI ZHONGLAN ENERGY EQUIPMENT TECHNOLOGY CO LTD

Water pump air tightness test bench

The utility model discloses a water pump air tightness test bench, which relates to the technical field of test benches and comprises an air tightness machine bench, a control top box and a two-stage three-way electromagnetic valve, a mechanical pressure gauge is embedded in the outer wall of the control top box, a plurality of groups of control buttons are arranged on the outer wall of the control top box, and a U-shaped test fixture is arranged on the outer wall of a ventilation air pipe. A first-level adjusting valve is installed on the inner wall of the airtight machine table, a second-level adjusting valve is installed on the inner wall of the airtight machine table, and a one-in and one-out electromagnetic valve is installed on the inner wall of the airtight machine table. According to the utility model, the air tightness inspection mechanism is installed, the U-shaped test fixture is connected with the water pump, the external ventilation air pipe is connected with the test bench, a first-stage regulating valve and a second-stage regulating valve of the test bench are adjusted to specified numerical values, a control button switch of the test bench is pressed down, the shaft of the water pump rotates 3-5 circles within 15 seconds, timing is stopped when the time reaches 15 seconds, and the air tightness of the water pump is detected. And when the mechanical pressure gauge of the test bench is still stabilized at 0.045 Mpa and the pointer value of the mechanical pressure gauge is not changed, the airtight test of the water pump is qualified.
Owner:东迎滨 +4

File hanger convenient for file storage

The utility model relates to the technical field of file storage, and discloses a file hanger convenient for file storage, which comprises a supporting mechanism and a hanging mechanism, the supporting mechanism comprises a supporting seat, four moving wheels are arranged on the periphery of the bottom of the supporting seat, rotating shafts are rotatably connected between the moving wheels and the bottom of the supporting seat, and the rotating shafts are arranged on the supporting seat. A fixing frame is fixedly installed at the top of the supporting seat, fixing inclined rods are fixedly installed on the left side and the right side of the outer wall of the fixing frame and the top of the supporting seat, the hanging mechanism comprises fixing grooves formed in the left inner wall and the right inner wall of the fixing frame, supporting arcs are arranged in the two fixing grooves, and a supporting rod is arranged between the two supporting arcs. A file box is arranged below the supporting rod, two hooks are connected between the top of the file box and the supporting rod in a clamped mode, and the file box is connected with the supporting rod in a clamped mode through the hooks. According to the archive hanging rack convenient for archive storage, archive files of different sizes can be stored conveniently, and a user can use the archive hanging rack conveniently.
Owner:XINJIANG HENGSHU YUANHUI INFORMATION TECHNOLOGY CO LTD

Human resource management file hanger

The invention discloses a human resource management file hanging rack which comprises a shell and a file rack body, two sliding strips are fixedly connected to the two ends of the file rack body, pulleys are fixedly connected to the two end faces in the shell, the pulleys are connected between the two sliding strips in a rolling mode, a cabinet door is rotationally connected to one side of the shell, and file grooves used for storing files are formed in the inner side of the file rack body. Classification grooves are formed in the outer sides of the file racks, the file grooves are communicated with the middles of the classification grooves, a plurality of classification assemblies used for classifying and fixing files are arranged in the classification grooves, and a plurality of connection assemblies used for fixing the file racks are arranged on the outer side of the shell. The two parts of the connecting assembly are installed at different positions, through the design of the two parts of the connecting assembly, the effect of quick assembly and quick disassembly can be achieved, meanwhile, the classification assembly is arranged, the position of the classification assembly can be freely adjusted, files of different numbers can be fixed, a user can conveniently summarize and search the files, and the use experience of the user is improved. The working efficiency is improved.
Owner:CHONGQING STALAGMITE MOUNTAIN ECOLOGICAL AGRI

Bionic nerve graft and preparation method therefor

PendingEP4324491A4Solve the lack of supportgood biocompatibilitySurgeryPharmaceutical delivery mechanism
The present invention discloses a bionic nerve graft and a preparation method thereof. The bionic nerve graft includes a helical stent, a nanofiber membrane, guide fibers and hBMSC-ECM. A surface of the helical stent is coated with the nanofiber membrane, the guide fibers and the hBMSC-ECM are placed in a tube cavity of the helical stent, and the raw materials of the helical stent, the nanofiber membrane and the guide fibers are all chitosan. The preparation method includes the following steps: preparing the helical stent by a mold pouring method, coating the surface of the helical stent with the nanofiber membrane by an electrostatic spinning method, preparing the guide fibers by a template method, and filling the guide fibers and the hBMSC-ECM in the helical stent with the surface coated with the nanofiber membrane. The method provided by the method is simple and low in cost. The prepared bionic nerve graft ensures sufficient mechanical support, good compliance and guidance, provides a sufficient space for the transmission of nerve regeneration nutrients, provides microenvironment elements for nerve regeneration, and has high biocompatibility and low immunogenicity.
Owner:NANTONG UNIV

GO membrane enhanced composite artificial gel periosteum material containing vascularized network and preparation method of GO membrane enhanced composite artificial gel periosteum material

The invention discloses a GO membrane enhanced composite artificial gel periosteum material containing a vascularized network and a preparation method of the GO membrane enhanced composite artificial gel periosteum material. Comprising the following steps: 1) preparing multiple layers of GO films by adopting a circulating blade coating-drying method; 2) placing the GO film in a convex array mold, pouring an HAMA solution, and carrying out UV curing to obtain a GO film composite gel substrate layer; (3) preparing an HAMA solution containing dopamine-coated mesoporous hydroxyapatite loaded with an angiogenesis promoting factor; 4) preparing a gelatin / HAMA mixed solution by using a blood vessel differentiation promoting culture medium as a solvent, and adding the bone marrow mesenchymal stem cells; and (5) performing 3D printing on the solution in the steps (3) and (4) on the uneven surface of the GO film composite gel substrate layer according to a drawing, performing UV curing, and performing in-vitro angiogenesis culture at 37 DEG C to obtain the composite artificial gel periosteum containing the vascularized network. The periosteum material is printed with the vascularized network in situ, and is compounded with the GO film with the function of enhancing and promoting osteogenesis, so that innovation of the periosteum material is realized.
Owner:LISHUI CENT HOSPITAL

A cvd modified coating and method of making and use thereof

This invention relates to a CVD-modified coating, its preparation method, and its application, belonging to the field of coating technology. The preparation method includes the following steps: obtaining a CVD coating using chemical vapor deposition; subjecting the CVD coating to freeze-drying to obtain a first CVD coating; subjecting the first CVD coating to magnetic field heat treatment to obtain a second CVD coating; and sequentially alternatingly processing the second CVD coating with the freeze-drying and magnetic field heat treatments to obtain the CVD-modified coating. Based on existing CVD coating preparation methods, this invention utilizes a combined magnetic field heat treatment and freeze-drying process for synergistic modification, optimizing the microstructure of the CVD coating. When applied to a substrate surface, it can improve its hardness and wear resistance, thereby extending the service life of devices such as cutting tools, molds, and machine parts, and has a wide range of applications.
Owner:ADVANCED NANO COATING TECH CO LTD

Data identification method, device, electronic device and storage medium

The embodiments of the present application disclose a data identification method, device, electronic device and storage medium; including: obtaining multiple classifier sets, each classifier set includes at least two classifiers; for multiple historical time periods, obtaining the number of hits of the text data corresponding to each historical time period to each classifier set; if the hit difference between the number of hits of the text data corresponding to the first historical time period to the first classifier set and the number of hits of the text data corresponding to the second historical time period to the first classifier set exceeds a preset threshold, then the first classifier set is determined to be an abnormal classifier set; and at least one abnormal classifier set is displayed. The embodiments of the present application can screen and display abnormal classifier sets, and the staff can quickly summarize the corresponding abnormal data after viewing, which can reduce the consumption time and reduce the consumption of human resources.
Owner:IFLYTEK (SUZHOU) TECH CO LTD

Contact lens duplex box capable of reducing secondary pollution

The utility model relates to the technical field of contact lenses, in particular to a duplex box for contact lenses capable of reducing secondary pollution, which comprises a care solution bottle cap and a glasses duplex box, the care solution bottle cap consists of a bottle cap seat part and a bottle cap part, the top end of the bottle cap seat part is connected with the bottle cap part, and the glasses duplex box is connected with the care solution bottle cap. The glasses duplex box is composed of a duplex box body and a box cover, an overhead structure is arranged between the care solution bottle cap and the glasses duplex box, and the overhead structure comprises a supporting part and a groove. According to the utility model, the whole glasses duplex box can be air-dried in an overhead state, so that the air-drying area is increased, the air-drying efficiency is improved, and the phenomenon that the cleaning effect is reduced due to secondary pollution caused by contact between the cleaned undried glasses duplex box and a table top or other surfaces is avoided; the contact lenses are convenient for users to conclude and use and are prevented from being lost.
Owner:SHANTOU RIMAN MEDICAL TECH CO LTD

Cold water mass culture net cage

The invention relates to the technical field of fish school culture, in particular to a cold water mass culture net cage which comprises stand columns, a culture mechanism is mounted on the central stand column, a maintenance mechanism is mounted on the culture mechanism, a conveying mechanism is mounted on the culture mechanism, and a fishing mechanism is mounted on the culture mechanism; through installation of the breeding mechanism, fry breeding is facilitated, the effect of keeping the low temperature of breeding water is achieved, fry ventilation is further facilitated, through matched installation of the conveying mechanism, pumping and conveying of water bottom cold water are facilitated, water circulation supply is conducted, and the ventilation effect is achieved; according to the device, fish fries can be put and fed conveniently, divers can dive conveniently, maintenance of the whole device is achieved, operation is more convenient, adult fish can be induced through installation of the fishing mechanism, extraction after fishing is facilitated, and operation is more convenient, faster and more labor-saving.
Owner:RIZHAO WANZEFENG FISHERIES CO LTD

Lifting output mechanism of molding machine

The utility model relates to the technical field of core shooters, and discloses a lifting output mechanism of a molding machine, which comprises an output box, one side surface of the output box is provided with a feed inlet, the top of the inner wall of the output box is fixedly connected with a first cylinder, and the output end of the first cylinder is fixedly connected with a first telescopic rod; the bottom of the first telescopic rod is fixedly connected with a lifting frame. The utility model has the following advantages and effects: when the height is reduced to a proper position corresponding to the discharge port, the conveying belt is started, so that molded molding sand is output from the discharge port, the lifting frame ascends and resets after being sent out, the dust removal box descends, the width of the dust removal box is slightly smaller than that of the conveying belt, and the dust removal box moves downwards to enable the suction nozzle to be close to the top of the conveying belt for suction; and meanwhile, when the conveying frame descends, a suction nozzle can suck air in the output box, the functions are diversified, and the cleaning difficulty of the residual dust is reduced.
Owner:HUBEI BOSONGDE MASCH MFG CO LTD

Binding vehicle for large animal capturing action experiment

ActiveCN222515891UConvenient inductionavoid non-coordinationClimate change adaptationTaming and training devicesAnimal scienceStructural engineering
The utility model relates to the technical field of animal binding vehicles, and discloses a binding vehicle for a large animal catching action experiment, which comprises a heightening frame, a filling fence is fixedly connected in the heightening frame, a support column is fixedly connected to the bottom of the heightening frame, a movable frame is fixedly connected to the bottom surface of the support column, and a movable frame is fixedly connected to the movable frame. Universal wheels are fixedly connected to the bottom of the moving frame, supporting columns are fixedly connected to the periphery of the top face of the heightening frame, and fence frames are fixedly connected to the top faces of the supporting columns. According to the binding vehicle for the large animal catching action experiment, through the arrangement of binding surrounding rods and traction assemblies, according to the length of an animal, the traction assemblies of the proper binding surrounding rods are selected for binding, then traction binding bands are bound to the four limbs of the animal, adjusting sleeves are slid to the proper height, adjusting bolts are screwed for fixing, traction ropes are tightened, and the traction ropes are tightened; therefore, the four limbs of the animal are fixed in an all-dimensional adaptive length manner, and the animal is prevented from being stimulated to cause mismatch.
Owner:BEIJING HUAFUYUAN BIOTECHNOLOGY CO LTD

A peony PoAGL15 gene and its amino acid sequence and application

ActiveCN114457094BConvenient inductionPlant peptidesFermentationBiotechnologyNucleotide
The present invention discloses a peony PoAGL15 gene and its amino acid sequence and application. The nucleotide sequence of the gene is shown in SEQ ID No. 1, and the amino acid sequence encoded by the gene is shown in SEQ ID No. 2. The peony PoAGL15 gene provided by the present invention is related to somatic embryogenesis, will be accumulated and expressed in the early embryo, and has an important regulatory role in the late stage of peony somatic embryo maturation, and can accelerate the efficiency of peony in vitro breeding. Constructing a eukaryotic expression vector and transforming Arabidopsis thaliana can enhance the induction of Arabidopsis leaf callus and make the leaves larger. The peony PoAGL15 gene and its amino acid sequence provided by the present invention can not only provide a certain theoretical basis for establishing a complete plant regeneration and genetic transformation system for peony, but also can be applied to the breeding of other plants.
Owner:INT CENT FOR BAMBOO & RATTAN

Filter cartridge dust remover

The filter cartridge dust remover comprises a plurality of filter cartridge units, each filter cartridge unit comprises a vertically-arranged filter cartridge and an induction nozzle assembly located over the filter cartridge, and each induction nozzle assembly comprises a nozzle and an air diffuser located under the nozzle; the air diffuser is of an integrated structure, is of a big-end-down water-drop-shaped structure and comprises a cone frustum structure part located on the upper portion and a hemisphere structure part located on the lower portion. The geometric central axis of the cone frustum structure part passes through the sphere center of the hemisphere structure part, and a central flow guide hole penetrating through the air diffuser in the axial direction is formed in the position of the geometric central axis of the cone frustum structure part. According to the filter cartridge dust remover, the overall blowing strength and blowing uniformity can be considered, airflow can be effectively induced and converged through the arrangement of the air diffuser of the water drop type structure and the central flow guide hole, and then the high dust removal efficiency and the good dust removal effect are achieved.
Owner:SHENHUA SHENDONG COAL GRP +3

PROMOTING REGENERATION AND TRANSFORMATION IN BETA VULGARIS

ActiveDK4019639T3beneficial effect complex mechanismPromotes the development of somatic embryos
The present invention relates to the field of plant breeding and in particular to the regeneration of plants from cells and other tissues. More particularly, the invention provides methods and means for improving callus and shoot formation and regeneration of plants using SNP in combination with BnBBM.
Owner:KWS SAAT SE & CO KGAA

Health management file storage rack and use method thereof

The invention provides a health management file storage rack and a use method thereof, and relates to the technical field of health management file storage racks, the health management file storage rack comprises a shell, a baffle is slidably connected in the shell, a ball is rotatably connected to the lower surface of the baffle, a pointer is fixedly installed on the side face of the baffle, and a scale groove is formed in the side face of the shell; and a limiting block is fixedly installed on the side face of the baffle, a limiting rod is slidably connected into the limiting block, and through the structural design of the shell, the baffle, the balls, the limiting block, the limiting rod and the like, archives can be more conveniently and rapidly summarized and arranged. Through the sliding design of the ball, the movement of the archives becomes smoother, the positioning accuracy is effectively improved through the cooperation of the pointer and the scale groove, the archives can be stably fixed through the linkage structure of the limiting block and the limiting plate, the operation convenience and flexibility are enhanced through the springback effect of the spring, and the storage space can be adjusted.
Owner:ZHENJIANG COLLEGE

Bacillus subtilis self-induced gene expression system based on maltose and application of bacillus subtilis self-induced gene expression system

The invention relates to a maltose-based bacillus subtilis self-induced gene expression system and application thereof, and belongs to the field of gene engineering. An induction system commonly used in bacillus subtilis has the problems that exogenous addition is needed, operation is tedious, cost is high, expression intensity is low and the like, and efficient expression and industrialization of protein and metabolites are not facilitated. According to the invention, site-directed mutagenesis is carried out on a PmalA promoter to obtain a high-performance promoter PmalA1, and a T7 RNA polymerase amplification module is further combined to construct a PT7malA1 expression system. The system can automatically start expression after glucose is used up without adding an inducer, and has the advantages of simple and convenient induction process, low leakage, high expression intensity, capability of accurately controlling the induction time by regulating the glucose concentration and the like. By applying the system, efficient synthesis of lycopene and beta-carotene is successfully realized, the yield is remarkably increased, and excellent industrial application potential is shown.
Owner:YIXING INST OF FOOD & BIOTECHNOLOGY CO LTD +1

A method for improving the induction rate of protocorm and sporophyte of goldthread

This invention discloses a method for improving the induction rate of prothallus and sporophyte in *Cibotium barometz*, comprising: S1, sterilizing the substrate with a fungicide, wherein the fungicide includes thiophanate-methyl and tebuconazole, and after sterilization, reducing the substrate moisture content to 40-50%, obtaining a sterilized substrate; S2, contacting the bottom of the substrate with a hormone aqueous solution, obtaining a substrate absorbent with the hormone aqueous solution; S3, sowing *Cibotium barometz* spores on the substrate surface for cultivation. This invention shortens the spore germination time of *Cibotium barometz*, improves the induction rate of prothallus and sporophyte, and is simple and easy to implement. Using this method to cultivate *Cibotium barometz* seedlings, prothallus are induced in an average of 22 days, and sporophyte are induced in 66 days. This method can be applied on a large scale to the sowing and seedling cultivation of *Cibotium barometz*, saving seedling time and labor costs.
Owner:HUNAN ACAD OF FORESTRY