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A multifunctional antibacterial coated bone implant device based on a selective vacuum infusion process and a method of making the same
The application discloses a multifunctional antibacterial coating bone implant device based on a selective vacuum perfusion process and a preparation method thereof. The method comprises the following steps: 1) pretreating a titanium alloy base; 2) performing anodic oxidation treatment on the pretreated titanium alloy base to construct a nanotube structure on the surface of the titanium alloy base; 3) selectively coating the treated titanium alloy base with a hydrogel adhesive, then immersing the titanium alloy base in a povidone iodine mixed solution to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a bone growth promoting factor to perform vacuum perfusion, and performing post-treatment, then again performing selective coating, immersing the titanium alloy base in a solution containing a blood vessel growth promoting factor to perform vacuum perfusion, and performing post-treatment; and 4) encapsulating the obtained sample surface with an in-situ self-polymerized polydopamine layer, washing and freeze-drying. The bone implant device has antibacterial, bone growth promoting and blood vessel growth promoting functions, and can greatly improve the curative effect on bone fracture symptoms accompanied by infection.
Owner:ZHEJIANG UNIV
A downhole supercritical carbon dioxide fracturing coal rock device and construction method
The application provides a downhole supercritical carbon dioxide fracturing coal rock device and a construction method, which comprises a coal seam, a fracturing borehole, a hole blocking section, a hole sealing section, a fracturing section, a monitoring hole, a fracturing system, a temperature control system, a grouting system, a liquid carbon dioxide pressurizing system, a proppant mixing system, an extraction system and a data collector; the fracturing borehole is arranged on the coal seam and comprises the hole blocking section, the hole sealing section and the fracturing section; a plurality of monitoring holes are arranged on the coal seam and are spaced apart in the circumferential direction of the fracturing borehole; and the fracturing system is connected with the temperature control system. The proppant mixing system can improve the performance of the liquid carbon dioxide carrying proppant mixture, so that the proppant mixture effectively enters the fracturing fracture and maintains good flow conductivity. The temperature control system overcomes the difficulty in preparation of downhole supercritical carbon dioxide and can realize injection of carbon dioxide in a supercritical state into the fracturing coal seam.
Owner:NORTHEASTERN UNIV CHINA
Petroleum wellhead instrument heat preservation protective cover
ActiveCN224216105UEliminate seal failureavoid exposureSurveyMeasurement apparatus housingsCold airThermodynamics
The utility model relates to the technical field of instrument protection, in particular to a petroleum wellhead instrument heat preservation protective cover. The petroleum wellhead instrument heat preservation protective cover comprises a protective box, a rotationally-connected box door is installed on the front box face of the protective box, and a wire inlet hole is formed in the side wall of the protective box; and a sealing part is arranged in the wire inlet hole. Compared with a traditional sealing plaster or anti-explosion sealing joint which seals a wire inlet hole formed in the side wall of the protection box, the heat preservation protection cover for the petroleum wellhead instrument has the advantages that the annular elastic liquid bag is of an elastic structure, and the expanded annular elastic liquid bag can rapidly fill a gap between a pressure guide pipe and a threading pipe and achieve sealing of the gap; cold air outside the protection box is effectively prevented from entering the protection box through a gap, the annular elastic liquid bag of an elastic structure solves the problem that sealing of the annular elastic liquid bag fails due to vibration of the pressure guiding pipe or the protection box in the structural form, and meanwhile the annular elastic liquid bag can adapt to pressure guiding pipes with different diameters.
Owner:XINJIANG BORUI EQUIP TECH CO LTD
Aperture automatic measuring and sorting integrated system
The utility model discloses an automatic aperture measuring and sorting integrated system which comprises a feeding assembly, a mechanical arm assembly, an aperture measuring assembly, a discharging assembly and a waste recycling assembly, the feeding assembly, the aperture measuring assembly, the discharging assembly and the waste recycling assembly are arranged around the mechanical arm assembly, a pneumatic gauge is arranged below the aperture measuring assembly, and the pneumatic gauge is arranged below the discharging assembly. And a detection head of the air gauge can penetrate through the through hole of the aperture measurement assembly to enter the hole of the part. As the upper and lower modules are adopted to drive the pneumatic gauge for testing, and the detection head of the pneumatic gauge is not in direct contact with the part, the inner wall of the aperture is effectively prevented from being scratched, and defective products are prevented from flowing out. The mode that the feeding assembly, the aperture measuring assembly, the discharging assembly and the waste recycling assembly are arranged around the mechanical arm assembly is adopted, so that the functions of measuring and sorting can be achieved through one mechanical arm assembly, and cost is reduced.
Owner:SUZHOU ISHIKAWA IRON MFG CO LTD
A method for preparing fluorine-containing Fe3O4 nanoassemblies and their application in intracellular protein delivery.
ActiveCN117658226BImprove stabilityeasy to prepareNanomagnetismInorganic non-active ingredientsTherapeutic proteinTumor therapy
The application discloses a preparation method of fluorine-containing Fe3O4 nano-assemblies and application of the fluorine-containing Fe3O4 nano-assemblies in intracellular protein delivery, and the preparation method comprises the following steps: preparing Fe3O4 nanoparticles and small-molecule ligands containing fluorine alkyl chains respectively, and the two are combined through ligand exchange reaction to form fluorine-containing Fe3O4 nanoparticles; the fluorine-containing Fe3O4 nanoparticles can be self-assembled with proteins to form stable complexes through the hydrophobic effect and electrostatic effect of the fluorine alkyl chains. The fluorine-containing Fe3O4 assemblies provided by the application have universality as intracellular protein delivery carriers, can effectively deliver proteins with different isoelectric points and molecular weights to tumor cells, do not affect the biological activity of the cargo proteins, have small toxicity to cells, and have good biocompatibility. The protein delivery efficiency of the assemblies is further improved under the guidance of an external magnetic field, so that the killing effect of therapeutic proteins on tumor cells is enhanced, and the assemblies have application potential in the field of tumor treatment.
Owner:CHINA PHARM UNIV
A ship side thruster cover system
ActiveCN117227950Bshort processreduce impactSteering by propulsive elementsDoor/window applicationsStructural engineeringProw
This application relates to the field of ship structures, and in particular to a ship side thrust cover system, including a cover plate rotatably connected to the hull and capable of closing the side thrust tunnel opening. The cover plate's rotation point is located near the bow, and the rotation axis of the cover plate is perpendicular to the length direction of the hull. The cover plate flips towards the hull side. A shaft end block is coaxially fixedly connected to the rotation point of the cover plate. Two rotation limit blocks are provided in the rotation plane of the shaft end block, and the two rotation limit blocks can abut against the opposite sides of the shaft end block one by one. The hull is provided with a synchronous rotation mechanism that allows the cover plates at both ends of the side thrust tunnel to rotate synchronously in opposite directions. This makes it easier to control the overall hull without having to deliberately control the cover plate during side thrust and normal navigation.
Owner:PINGHU HUAHAI SHIPBUILDING CO LTD
A circulating water pump motor for a dishwasher facilitating heat dissipation
A circulating water pump motor for dish-washing machine is convenient for heat dissipation, which comprises a stator core, front and rear machine covers clamped and fixed at two ends of the stator core, bearing holes are formed at central positions of the front and rear machine covers, front butt joints are connected with front end covers through a plurality of front connecting ribs, front heat dissipation holes are formed between adjacent two front connecting ribs, the rear machine cover comprises a rear butt joint and a rear end cover, a rear clamping seat is arranged at an end surface of the rear butt joint, a rear end surface of the stator core is clamped and installed in the rear clamping seat, the rear butt joint is connected with the rear end cover through a plurality of rear connecting ribs, rear heat dissipation holes are formed between adjacent two rear connecting ribs. The front and rear heat dissipation holes constitute direct and effective heat dissipation channels, air convection between the inside and outside of the motor is promoted, and the operating temperature of the motor as a whole, especially the stator core and other heating components, is significantly reduced.
Owner:FOSHAN BAODE MOTOR MFG CO LTD
Multifunctional automobile horn set
The utility model discloses a multifunctional automobile horn set, which relates to the technical field of automobile accessories and comprises a mounting plate, a mounting shell is movably connected to one side of the mounting plate, a horn body is fixedly connected in the mounting shell, fixing seats are symmetrically and fixedly connected to the outer side wall of the mounting shell, and fixing assemblies are mounted in the fixing seats. A waterproof cover is movably connected to one end of the mounting shell, a mounting assembly is mounted on one side of the waterproof cover, and a shielding plate is fixedly connected to the interior of the waterproof cover and arranged in an inclined mode. By adopting the above structure, the waterproof loudspeaker can effectively resist water and moisture, the waterproof cover can prevent moisture from entering the loudspeaker no matter in rainy days, passing through a waterlogged road surface or even during car washing, key components such as the voice coil and the vibrating diaphragm are protected from being affected with damp, damage caused by short circuit, corrosion and the like is avoided, the service life of the loudspeaker is greatly prolonged, and the service life of the loudspeaker is prolonged. And impurities such as dust and silt can be blocked.
Owner:NINGBO ZHENHAI BRAUN ELECTROACOUSTIC TECH CO LTD
A high-efficiency and energy-saving steam generator for pasta processing
ActiveCN224284565Uvalid entryThe generation process is efficient and continuousSteam generation using pressureBoiler indication operationsThermodynamicsSteam pressure
This utility model discloses a high-efficiency and energy-saving steam generator for pasta processing, including a support frame. A generating mechanism is mounted on the support frame. The generating mechanism includes a cylinder, a water tank, a water injection pipe, an external pipe, a material tank, and an outer cover. A pressure relief mechanism is located at the top of the cylinder. The pressure relief mechanism includes a support pipe, a pressure relief sleeve, an inlet pipe, a sliding rod, a sealing plate, a pressure spring, a contact ring, an adjusting sleeve, a rotating sleeve, a screw, a transmission sleeve, and a positioning mechanism. The support pipe is located on the top surface of the cylinder and connected to the water tank. The pressure relief sleeve is installed inside the support pipe, and the inlet pipe is located at the bottom of the pressure relief sleeve. When the steam pressure inside the cylinder is too high, the pressure pushes the sealing plate through the inlet pipe, overcoming the preset force of the pressure spring, thus forming a flow channel between the sealing plate and the inlet pipe, allowing the pressure to be released smoothly. At this time, the pressure relief sleeve discharges excess pressure, avoiding the risk of equipment damage or dangerous leakage due to excessive pressure in the steam generator.
Owner:安徽良辰食品有限公司
A nano desorbent for gas well and a preparation method thereof
ActiveCN120961126Beasily brokenReduce electrostatic attractionOther chemical processesGaseous fuelsActive agentDesorption
The present application belongs to the technical field of oil and gas exploitation, and relates to a nano desorption agent for gas well and a preparation method thereof. The desorption agent uses special pretreated biochar as a core carrier, loads specific proportion of bimetallic oxide nanoparticles, and is supplemented with an environmentally friendly surfactant for surface modification. Through the synergistic effect of nano size effect, catalysis / electron transfer effect of metal oxide, physical adsorption and pore transport effect of biochar, and interfacial tension reduction effect of surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is significantly reduced, and the efficient desorption is promoted. At the same time, all components and preparation processes are environmentally friendly and harmless to human body.
Owner:LIAONING QIRUI PETROLEUM TECH CO LTD
Tray carrying, positioning and guiding device suitable for unmanned forklift
ActiveCN224077027Uaccurate placementevenly placedLifting devicesStructural engineeringMechanical engineering
Owner:GUOKE INTELLIGENT MANUFACTURING (WEIHAI) INTELLIGENT TECHNOLOGY CO LTD
Preparation method of high-performance diffusion Sm-Co composite permanent magnet
ActiveCN114864266BGuaranteed MagneticThe experimental method is simpleMagnetic materialsInductances/transformers/magnets manufactureMagnetic phaseOrganic solvent
The application discloses a preparation method of a high-performance diffusion Sm-Co composite permanent magnet, and comprises the following steps: mixing alloy components according to (Sm, Re)2(Co, A) 17 After the alloy components are mixed, a proper amount of BiI3 is added, magnetic field orientation forming is carried out, and a Sm-Co magnet green body is obtained; the Sm-Co magnet green body is vacuum pre-fired under certain temperature conditions, and a magnet with a network channel structure in the interior is formed; a soft magnetic phase nano-level Fe or Co powder is mixed with an organic solvent to form a diffusion source mixed solution, the pre-fired Sm-Co magnet is immersed into the mixed solution, and after being taken out, the Sm-Co magnet is placed into a vacuum oven and dried. The BiI3 sublimation technology is used to make the soft magnetic phase and the doped elements effectively enter the grain boundary of the Sm-Co magnet, improve the coupling effect and pinning effect of the soft and hard magnetic phases, and improve the coercive force and maximum magnetic energy product. The preparation method is simple in process, low in cost, less in introduced impurities, and capable of maintaining the magnetic performance of the hard magnetic phase to the maximum extent.
Owner:DONGYANG FIRST MAGNETICS CO LTD
Storage devices, warehouse robots and warehousing systems
ActiveCN224618609Uprevent sideways slipping outWill not slide out sideways
This application provides a storage device, a warehousing robot, and a warehousing system, relating to the field of warehousing technology. The storage device includes a crossbeam and two extension arms. The crossbeam extends along a first direction, and the two extension arms are arranged at intervals relative to each other along the first direction. Each extension arm includes a first end and a second end. The first end is fixedly connected to the crossbeam, and the second end extends away from the crossbeam along a second direction. Both the first and second directions are located on a horizontal plane, and the first and second directions form an angle. Each extension arm includes a bearing surface, and the bearing surfaces of the two extension arms together form a storage position for holding a material box. Each extension arm includes a first guide portion and a second guide portion. The first guide portion guides the material box into the storage position when its entry direction is parallel to the vertical direction, and the second guide portion guides the material box into the storage position when its entry direction is parallel to the second direction. This storage device can adapt to various application scenarios and improve the user experience.
Owner:HANGZHOU HIKROBOT TECH CO LTD
A primary and secondary fusion ring network cabinet and a use method thereof
ActiveCN117559262BRealize air cooling and heat dissipationEfficient dispersionSubstation/switching arrangement cooling/ventilationSubstation/switching arrangement casingsRainy weatherStormwater
This application provides a primary and secondary integrated ring main unit, including a cabinet body. Heat dissipation vents are provided on both side walls of the cabinet body, and each vent is fixedly connected to a mounting frame. Each mounting frame contains a swing-type heat dissipation structure. By setting the swing-type heat dissipation structure, air cooling is achieved through swinging motion within the cabinet body, efficiently dissipating heat outwards. By setting baffles, linkage structures, and heat dissipation structures, the heat dissipation vents can be sealed during rainy weather, preventing rainwater from entering the cabinet body. After sealing, the rainwater is used to dissipate heat from the cabinet body, solving the problem of rainwater easily entering the cabinet body through the heat dissipation vents in existing technologies. By setting connecting frames, a base plate, a fixing plate, threaded rods, moving strips, guide rods, a first connector, an adjusting rod, and a second connector, the cabinet body can be automatically raised during rainy weather. The raised height is relatively high, effectively preventing rainwater from entering from the bottom of the cabinet body, improving the waterproof effect.
Owner:江苏米格电气集团股份有限公司
3D printing pump-free sample injection point discharge atomic emission spectrum analysis device and method for detecting arsenic
PendingCN121783950Areduce volumereduce lossAdditive manufacturing apparatusVolume/mass flow measurementAnalyteGlass chip
The invention discloses a 3D printing pump-free sample injection point discharge atomic emission spectrum analysis device and method for detecting arsenic, and belongs to the technical field of atomic emission spectrum analysis. Comprising a 3D printing integrated device, an external gas path system and a spectrum detection system, the 3D printing integrated device comprises a 3D printing module, a quartz glass sheet, a quartz capillary tube, two tungsten filament electrodes and a microsyringe; the external gas path system comprises a small argon steel cylinder, two argon pipelines, a gas flow meter and a trace gas flow meter; the spectrum detection system comprises an optical fiber and a small CCD spectrometer. The method comprises the following steps: injecting an arsenic-containing solution sample into a reaction chamber of a 3D printing device by using a microsyringe, converting the arsenic-containing solution sample into a gaseous analyte through hydride generation, blowing the gaseous analyte into a discharge chamber by argon, exciting an atomic emission spectrum of arsenic by using micro plasma, radially collecting a spectral signal from the outside of a quartz capillary by using a bare optical fiber, and transmitting the spectral signal to a CCD (Charge Coupled Device); and finally, the concentration of the arsenic in the sample can be obtained through calculation. The method has the characteristics of high excitation efficiency, strong anti-interference capability, low cost, open source sharing, environmental friendliness and the like.
Owner:SICHUAN UNIV
Improved material receiving mechanism for ship loader conveyor belt
ActiveCN224336556Ueffective guidanceEffectively guide materials to enterLoading/unloadingConveyor partsMarine engineeringTransmission belt
The utility model discloses a kind of material receiving mechanism of ship loader conveying belt, prevent material spilling by the angle-adjustable material receiving plate and side baffle being set below transmission belt, adopt hydraulic system to adjust material receiving plate position, material transition is optimized in combination with the double hopper design of upper and lower communication, while material receiving plate and material receiving plate receive and turn into the material spilling of lower hopper into the material of transmission belt into upper hopper.The mechanism also includes rubber plate connected with material receiving plate and material receiving plate, spray cleaning system for cleaning material receiving plate and material receiving plate, material receiving plate is connected with hydraulic rod and has damper, material receiving plate is also provided with vibration motor, and material adhered on material receiving plate is vibrated loose by vibration motor, dust existing in transmission belt end position is reduced using spray system, and dust cover is provided at the end of transmission belt.
Owner:JIANGSU JIANGYIN PORT GRP CO LTD
Method for detecting metal and other impurities in clean dust-free cloth
PendingCN122016771Aimprove accuracygood repeatabilityPreparing sample for investigationAnalysis by thermal excitationAfter treatmentPhysical chemistry
The invention relates to the technical field of impurity detection, in particular to a method for detecting metal and other impurities in clean dust-free cloth, which comprises the following steps: weighing the initial mass M0 of a corrosion-resistant container, putting the dust-free cloth to be detected into the container, and measuring the total mass M1; soaking liquid is added into the container, so that the dust-free cloth is completely immersed; the container is placed on a heating device for constant-temperature heating treatment, metal and other impurity elements in the dust-free cloth are released into the soaking solution, the dust-free cloth is taken out after treatment is finished, and a solution to be detected is obtained; carrying out element content detection on the solution to be detected, and synchronously carrying out a blank experiment to respectively obtain detection results C1 and C0; and calculating the content of each element in the dust-free cloth according to the detection result, the volume of the soaking liquid and the mass difference value. According to the method, the accuracy and repeatability of a detection result can be improved, so that the content of each element in the dust-free cloth can be accurately measured.
Owner:JIANGSU ZHONGNENG POLYSILICON TECH DEV
Packaging structure and multi-layer composite solar cell panel module
ActiveCN224205530Ufirmly connectedImprove the ability to resist stress concentrationElectrical batterySolar battery
The utility model relates to the technical field of solar cells, in particular to a packaging structure which comprises a first packaging structure layer, the first packaging structure layer is provided with a plurality of through holes, and the through holes can penetrate through the upper surface and the lower surface of the first packaging structure layer. The utility model further provides a multi-layer composite solar cell panel module which is provided with a first packaging structure layer. Compared with the prior art, the stress distribution of the first packaging structure layer can be changed through the through holes, so that the stress is redistributed around the through holes, the phenomenon of stress concentration is relieved, more uniform deformation of the first packaging structure layer during bending is facilitated, local overhigh stress of the first packaging structure layer is reduced, and the reliability of the packaging structure layer is improved. Therefore, the first packaging structure layer is ensured not to be cracked or fractured due to overlarge stress in the bending process, and the condition that all layers of the solar cell panel module are not cracked or layered is ensured, so that the cell can obtain a good sealing protection effect, the use reliability of the solar cell module is improved, and the service life of the solar cell module is prolonged.
Owner:SHENZHEN DELUSHI OPTOELECTRONICS TECH CO LTD
Low temperature hermetic ozone monitoring module
The utility model discloses a low temperature sealed type ozone monitoring module, it relates to ozone monitoring module technical field, aims at solving the current ozone monitoring module when facing the low temperature environment of time, the shrinkage of sealed structure is easy to appear, and the sealed performance drops the condition, and cannot nimblely adjust the operation problem, and its technical scheme main points include detection pool, and one movable end is rotatively sleeved in the both ends of detection pool respectively, the side surface of movable end and detection pool all is provided with gas guide hole, and the both ends of movable end all are provided with the mounting groove, and the inside mounting of mounting groove has sealed gas bag, the end surface of movable end is fixedly connected with the adjusting seat, the end surface of adjusting seat is provided with the threaded hole, and the threaded hole is screw thread connection with piston rod. Reached the sealed structure of inside can adjust the operation, and the sealed performance is strong, and the module can carry out remote operation simultaneously, and the practicality is strong effect.
Owner:SICHUAN KAICHUNHONG ENVIRONMENTAL TESTING TECH CO LTD