34results about How to "Does not destabilize" patented technology

The invention discloses a false data injection attack design and defense method for a direct current microgrid. For a network communication message in the secondary control layer of the direct currentmicrogrid, malicious false data are injected. At the same time, considering the initial state estimation bias and measurement noise existing in the original detection process, a covert data injectionattack method is designed to cause disturbance to current / voltage without affecting the existing attack detection indicators. The covert data injection attack acquired through analysis affects the average voltage value of coupling points in the direct current microgrid. A proportional-integral dynamic average consistency algorithm is used to estimate the average voltage value of the coupling points in the direct current microgrid. The covert data injection attack is detected based on the average voltage deviation of the coupling points. Finally, a proportional-integral compensation mechanismis used to compensate the average voltage deviation of the coupling points. The secondary control input is adjusted. Voltage balance in the direct current microgrid is re-established.

The invention relates to a mining hydraulic support assembly platform which mainly comprises fork-type elevating platforms and cantilever type lifting platforms. The mining hydraulic support assembly platform is powered by hydraulic force to realize lifting and horizontal moving of the fork-type elevating platforms and lifting and telescopic movement of cantilever type lifting platforms. A hydraulic support is disassembled into a top beam assembly, a shield beam assembly and a pedestal assembly in a ground workshop and then transported to shaft bottom. During assembly of the hydraulic support, the assembly platform is placed in an air-return way of a working face, the assembly platform completely joint the hinge holes of the top beam assembly and the shield beam assembly and the hinge holes of the shield beam assembly and the pedestal assembly, hinge pins are inserted, and a rubber tube and other accessories are installed at last to complete assembly of hydraulic support. The disassembly of the hydraulic support is completed in a reverse order. The mining hydraulic support assembly platform is low in requirement on tunnel section, small in driving engineering work load, safe and efficient in installation, convenient for transportation and maintenance and low in cost. The platform can be used for installing and dismounting other fully mechanized mining equipment.

Present invention relates to a liquid phase chromatography column and preparation method, which includes one elastic quartz capillary without adhesive joining. It features middle of said capillary set with integral stationary phase formed by organic polymer in situ polymerization and modified by weak acid cation, lower reaches of said stationary phase set with detect window removing coated surface polyimide. Said invented includes 1, to proceed general pretreatment to elastic quartz inner wall, 2, making integral stationary phase basal body using monomer mixture, porogenic agent mixture and initiator, 3, modifying stationary phase basal body by modifier to obtain subacidity cation exchange integral stationary phase, 4, making detect window to obtain subacidity cation exchange capillary liquid phase chromatography column. Said invention has los price, easy to control preparing condition, fine reproduction quality, fine consistency with biological sample, suitable for biomacromolecule sample isolation analysis.

The invention discloses a preparation method of normal-temperature yoghurt containing complete fruit granules. The preparation method comprises the following steps: evenly mixing 90% to 95% pre-sterilized antibiotics-free milk, 4% to 8% of sweetening agent, 1.0% to 1.5% of modified starch and 0.2% to 0.6% of stabilizer in a vacuum material mixing mode, homogenizing and performing pasteurization onhomogenized liquid; adding 0.003% to 0.009% fermenting agent to perform fermentation and performing demulsification and sterilization when acidity reaches 70 to 90 thorner degrees to obtain a yoghurtbase material with a viscosity as 300 to 500cP; mixing 30% to 40% of white granulated sugar, 50% to 60% of mixed berry fruit granules, 0% to 1% of edible essence and 0.5% to 2% of PH modifier to obtain a mixture and storing the mixture under 4 to 10 DEG C, wherein the percents are mass percents of all the ingredients in the mixture; sterilizing and filling to obtain mixed berry fruit granules with a viscosity as 300 to 500cP; setting a mass ratio of the yoghurt base material adding amount to the mixed berry fruit granule adding amount as (9 to 8) to (1 to 2), mixing under a static state at first, then stirring to be mixed under a dynamic state and filling after being mixed. By means of a conveying and mixing mode of the yoghurt, the fruit granules can be evenly distributed in the yoghurt;furthermore, the mixing mode cannot affect system stability and granule completeness of products in the expiration date.

The invention discloses a compensation controller. The compensation controller comprises an operational amplifier, a first resistor, a second resistor, a first capacitor, a second capacitor, a first switch, a second switch and a third switch; the compensation input end is connected with the reverse input end of the operational amplifier after being connected with the first resistor; the positive input end of the operational amplifier is grounded, and the output end is connected with the feedback output end; the first capacitor is connected with the compensation input end and the reverse inputend of the operational amplifier; the first switch and the first capacitor are connected in series; the second resistor, the third switch the second capacitor are connected in series, and then the integral end is connected with the output end of the operational amplifier, and the other end is connected with the reverse input end thereof; and the third switch and the second capacitor are connectedin series and then are connected with the second switch in parallel. The compensation controller is used for an accelerometer closed-loop control system, and the compensation modes can be changed according to different sensitive structures of the accelerometers, so that the system performance is improved, and the system stability is enhanced.

The invention discloses a game auxiliary system based on image recognition and audio recognition. The system comprises a game image acquisition preprocessing module, a game sound acquisition preprocessing module, a digital image recognition module, a digital audio recognition module and a recognition result prompting module, wherein the five modules are divided according to the logic function of aprocessing task to jointly form an application program, and the data transmission and the signal transmission among the modules are completed through an in-process communication technology, so that the system is very efficient. Therefore, the system can accurately identify enemies lurking in the distance and vehicles and the position of the gunshot, and give prompt icons in a striking color on agame screen in real time; and in addition, an electronic compass and a small map can be identified to give a travel instruction to a player for the player to enter a safe area, and the survival time of an ordinary primary player in the game can be prolonged through auxiliary prompts, so that the game experience is improved.

The present disclosure relates to polynucleotides having promoter activity and applications thereof in the production of amino acids. Specifically, the present disclosure relates to a polynucleotide having promoter activity, a transcription expression cassette containing the polynucleotide, a recombinant expression vector, a recombinant host cell, a method for enhancing expression of a target gene, a method for preparing a protein, and a method for producing an amino acid. The polynucleotide with the promoter activity is a mutant of the polynucleotide with the sequence as shown in SEQ ID NO: 9, compared with the polynucleotide with the sequence as shown in SEQ ID NO: 9, the promoter activity of the mutant is remarkably enhanced, stable and efficient expression of a target gene can be promoted, and then downstream products can be stably and efficiently produced.

The invention provides a low-frequency sound absorber allowing passing of fluid. The low-frequency sound absorber allowing passing of fluid comprises a plurality of sound absorption units, and gaps allowing passing of fluid are formed among the sound absorption units. Each sound absorption unit comprises a hollow pipe body and plate bodies, wherein an opening extending in the axial direction of the pipe body is formed in the lateral wall of the pipe body, and the plate bodies are arranged at the two ends of the pipe body separately to close the two ends of the pipe body. According to the low-frequency sound absorber allowing passing of fluid, the gaps allowing passing of fluid are formed among the sound absorption units, so that application of the sound absorber to a pipeline system and other occasions is realized, absorption of sound waves is realized while fluid passes by, and low-frequency noise is reduced.

The invention relates to a preparation method of a high tension coating for oriented silicon steel. The technical scheme is as follows: components of a high-tension coating solution are as follows: 20-40 wt% of aluminum dihydrogen phosphate, 25-45 wt% of silica sol, 2-4 wt% of chromic anhydride, 0.8-4.0 wt% of potassium dihydrogen phosphate, 1.3-6.4 wt% of zirconium oxychloride, and 20-30 wt% of deionized water; according to the component and content of the high tension coating solution, firstly aluminum dihydrogen phosphate, silicon sol and chromic anhydride are added into a reaction kettle, uniform mixing is performed, then potassium dihydrogen phosphate and a zirconium oxychloride solution obtained by mixing zirconium oxychloride with deionized water is sequentially added, stirring is performed, then the high tension coating solution for oriented silicon steel obtained by stirring is smeared on the surface of oriented silicon steel, baking is performed in a protective atmosphere, and high temperature solidification is performed to obtain the high tension coating for oriented silicon steel. The method has the characteristics of low cost, simple process and easy industrial production, and the prepared high tension coating for oriented silicon steel has good tensile effects and excellent performance.

The invention discloses a dynamic displacement monitoring system for an equipment chamber base plate of an underground coal preparation plant. The dynamic displacement monitoring system comprises sensor nodes, SINK nodes, a base station and a monitoring host unit, wherein the sensor nodes, the SINK nodes and the base station are arranged in a well; the monitoring host unit is arranged on the well; the sensor nodes are wirelessly connected with the SINK nodes; the SINK nodes, the base station and the monitoring host unit are connected through wires. The dynamic displacement monitoring system for the equipment chamber base plate of the underground coal preparation plant based on ZigBee can be used for monitoring equipment foundations in an equipment chamber of the underground coal preparation plant to fulfill the aim of monitoring the displacement of the chamber base plate. The system is low in power consumption, high in reliability, high in sensitivity, easy to integrate and resistant to a severe industrial environment; the installation of the nodes cannot affect the operation of equipment and passing of people, and cannot damage the integrality and the stability of the equipment foundations.

The invention discloses a folding type hydraulic hoisting device which comprises a hoisting bracket. The hoisting bracket comprises a left upper beam, a left top beam, a right top beam and a right upper beam which are sequentially hinged from left to right, the lower side of the left upper beam and the lower side of the right upper beam are respectively provided with a vertical supporting hydraulic cylinder and two height-adjustable supporting columns arranged in a front-back mode, oblique supporting assemblies are respectively arranged between the left upper beam and the left top beam and between the right upper beam and the right top beam, bilaterally symmetric and oblique supporting rods and obliquely-arranged oblique pulling hydraulic cylinders, and the left top beam and / or the right top beam is provided with a lifting device with a hook. The folding type hydraulic hoisting device is used for assembling and disassembling the hydraulic devices which are high in automation degree, safe, reliable and good in applicability.

The invention discloses a use method of a scaffold in-situ fastening system, and relates to the technical field of stone curtain wall construction. The problems that the installation positions of scaffold wall connecting pieces and the installation positions of curtain wall unit plates conflict, the construction risks are high due to hole filling installation, and the installation quality is difficult to guarantee are solved. The use method comprises the following steps that the scaffold wall connecting parts are installed between the exterior wall of a building and scaffolds, and curtain wallunit plates are installed from bottom to top layer by layer; and when the scaffold wall connecting pieces are in a horizontal projection area of the preinstalled curtain wall unit plates, in-situ fastening devices replace the scaffold wall connecting pieces, the installation positions of the in-situ fastening devices corresponding to transverse joints are determined, anchoring parts are fixed, first fastening pieces are connected to the anchoring parts in a clamped mode, the other ends of the first fastening pieces penetrate through the transverse joints and extend to the outer side of a vertical face in which the curtain wall unit plates are located, one ends of second fastening pieces are connected to the extended ends of the first fastening pieces, and the other ends of the second fastening pieces are connected with the scaffolds; and the scaffold wall connecting pieces located in the horizontal projection area are removed, and the curtain wall unit plates are installed orderly.

The invention discloses an accelerating tube and a linear accelerator, and the accelerating tube comprises a waveguide and a plurality of accelerating cavities. The waveguide is coupled to one accelerating cavity. The accelerating tube also comprises a coupling degree adjustment device which is coupled to the waveguide, and is used for adjusting the coupling degree of the waveguide and the accelerating cavities. According to the embodiment of the invention, the original accelerating cavity structure is not changed, and only the electromagnetic waves guided to the accelerating cavities are adjusted, and there is no need to adjust the electromagnetic waves in the accelerating cavities. Therefore, the stability of the accelerating cavity structure cannot be damaged, and the work stability ofthe accelerating tube is improved.

The invention discloses an application method of a scaffold in-situ tying device, relates to the field of stone curtain wall construction, and aims at solving the problems that the positions of current scaffold wall-connection parts conflict with the mounting positons of curtain wall unit plates, hole-filling-type installation causes large construction dangerousness, and the mounting quality is low. The application method of the scaffold in-situ tying device includes the steps that the curtain wall unit plates are mounted from bottom to top, when a scaffold wall-connection part is arranged inthe horizontal projection area of the pre-mounted curtain wall unit plates, the in-situ tying device is adopted to replace the scaffold wall-connection part, the mounting position of the in-situ tyingdevice corresponding to a transverse joint is determined on a building base layer, a wall-connection embedded part is fixed to the mounting position, a first tying part is in clamped connection withthe wall-connection embedded part, the other end of the first tying part penetrates through the transverse joint and extends to the outer side of the vertical face where the curtain wall unit plate are located, then, one end of a second tying part is connected to the extension end of the first tying part, and the other end of the second tying part is connected with a scaffold body; the scaffold wall-connection part in the horizontal projection area of the curtain wall unit plates is disassembled, and then the curtain wall unit plates are mounted in sequence.

The invention belongs to the technical field of analog integrated circuits, and particularly relates to a 100% duty ratio entering circuit and a control method thereof. An internal detection adaptive on timer is mainly utilized to generate a signal to be compared with an internal FB detection circuit, if the timer is reversed at the moment, but an output signal of an fb detection circuit is still at a high level, it is affirmed that a 100% duty cycle is entered at the moment, a high duty signal HD is generated, the threshold value of an ea comparator is adjusted by utilizing the signal, the high level maintaining length of an fflow signal is smoothly lengthened, and the high level maintaining length of the high duty signal HD is adjusted. By means of the method, the system can smoothly enter a 100% state, meanwhile, the circuit is in an overall loop, and the stability of the system cannot be damaged.

The invention discloses a solid water quality cleaning agent for aquaculture and a preparation method thereof. The solid water quality cleaning agent comprises the following raw materials and components: trichosanthes kirilowii maxim, platycodon grandiflorum, purslane, corn flour, molasses meal, tartaric acid, citric acid, vermiculite powder, medical stone, magnesium peroxide, paraffin and humic acid. The method comprises the following specific steps: 1) preparing a traditional Chinese medicine extracting solution through trichosanthes kirilowii maxim and platycodon grandiflorum; 2) adding corn flour, molasses meal, tartaric acid and citric acid to the traditional Chinese medicine extracting solution; and processing to obtain mixed powder; 3) adding vermiculite powder and medical stone toa formic acid solution, and soaking; 4) roasting and grinding after soaking so as to obtain mixed powder; 5) adsorbing magnesium oxide to the mixed powder by an air phase method; and 6) adding the mixed powder obtained in 2), paraffin and humic acid; and pelletizing to obtain the product. The water quality cleaning agent is wide in component source, low in cost, environmentally friendly, nontoxic,high in biodegradation rate, free from secondary pollution to a pool, and wide in application prospect.

A method for precise control of the hole-forming line shape of the anchor cable on the high and steep rock slope with cracks. The micro-hole drilling machine is fixed in the internal groove of the angle fixer to form a micro-reinforced hole. The hole is formed into a simple triangle and then split. Grouting, use splitting grouting to make the effective radius of the reinforcement hole tangent to the anchor cable hole in the center of the simple triangle geometry, and finally use the angle fixer to fix the optical fiber sleeve and perform percussion drilling to form the anchor cable hole. The method of the invention is designed for the control of the hole-forming line pattern of the anchor cable. On the basis of ensuring the normal construction of the hole-forming anchor cable in the slope with developed cracks, the drilling quality is improved and the hole-forming angle and path are controlled.

The invention discloses a nanosphere emulsion reaction vessel with a condensation function. The nanosphere emulsion reaction vessel comprises a hollow vessel body, inside which a flow deflector is arranged. The flow deflector divides the inside of the vessel body into upper and lower independent cavities. A nanosphere emulsion is positioned inside the cavity below the flow deflector. The flow deflector is provided with multiple through holes. The outside of the vessel body below the flow deflector is sleeved with a jacket. The top and bottom of the jacket are both sealingly connected with thevessel body. The top of the jacket is connected to an air outlet pipe, which communicates the cavity above the flow deflector and a cavity between the jacket and the outer wall of the vessel body. Thevessel body is provided with an air inlet pipe which is communicated with the cavity above the flow deflector. The air inlet pipe is communicated with an air conditioner. The air inlet pipe and the air outlet pipe are respectively positioned on two sides of the vessel body relative to the center axis of the vessel body. The air conditioner is positioned at the outer side of the vessel body.

The invention discloses a terminal group and a forming method thereof. The terminal group comprises: a lower terminal, which has a lower body part and a lower contact arm extending forward from the lower body part; a first upper terminal, which has a first upper body part 1. A first upper convex part protrudes downward from the first upper main body, and a first upper contact arm extends forward from the first upper main body. The first upper contact arm and the lower contact arm are spaced up and down, and each second An upper convex part has a first upper welding plane that abuts against the top surface of the lower main part downwards and is laser welded with the top surface of the lower main part; a second upper terminal has a second upper main part, The second upper convex part is protruded downward, and the second upper contact arm extends forward from the second upper main body part. The second upper contact arm is spaced apart from the first upper contact arm. The upper convex parts are arranged vertically staggered, and each second upper convex part has a second upper welding plane abutting against the top surface of the first upper body part and laser welding with the top surface of the first upper body part.

The invention discloses an accelerating tube and a linear accelerator. The accelerating tube includes: a waveguide and a plurality of accelerating cavities, the waveguide is coupled to one of the accelerating cavities; a coupling adjustment device, the coupling adjustment device is coupled to the waveguide, and is used to adjust the waveguide and the The coupling degree of the accelerating cavity. The embodiment of the present invention does not change the structure of the original acceleration cavity, but only adjusts the electromagnetic wave guided to the acceleration cavity without adjusting the electromagnetic wave in the acceleration cavity. Therefore, the stability of the acceleration cavity structure will not be damaged, thereby improving Accelerate the stability of tube work.

The present application discloses a task management method, including: when starting the Celery service, scanning out the target task method; identifying each module called by the target task method, and storing the check value of the file content of each module in the cache; Before executing the target task method, determine the call chain module set of the target task method; calculate the file content check value of each module in the call chain module set, and judge whether it is consistent with the corresponding check value in the cache; if If any one is inconsistent, update the file content verification value of the module in the cache, and introduce the method of the module into the cache through module reloading; execute the target task method. Applying the solution of this application, the Celery task can be automatically effective without restarting, and the stability of the system will not be damaged. The present application also provides a task management system, equipment and storage medium, which have corresponding technical effects.

The invention relates to a mining hydraulic support assembly platform which mainly comprises fork-type elevating platforms and cantilever type lifting platforms. The mining hydraulic support assembly platform is powered by hydraulic force to realize lifting and horizontal moving of the fork-type elevating platforms and lifting and telescopic movement of cantilever type lifting platforms. A hydraulic support is disassembled into a top beam assembly, a shield beam assembly and a pedestal assembly in a ground workshop and then transported to shaft bottom. During assembly of the hydraulic support, the assembly platform is placed in an air-return way of a working face, the assembly platform completely joint the hinge holes of the top beam assembly and the shield beam assembly and the hinge holes of the shield beam assembly and the pedestal assembly, hinge pins are inserted, and a rubber tube and other accessories are installed at last to complete assembly of hydraulic support. The disassembly of the hydraulic support is completed in a reverse order. The mining hydraulic support assembly platform is low in requirement on tunnel section, small in driving engineering work load, safe and efficient in installation, convenient for transportation and maintenance and low in cost. The platform can be used for installing and dismounting other fully mechanized mining equipment.

The invention discloses a terminal group and a forming method thereof, and the terminal group comprises a lower terminal which is provided with a lower main body part and a lower contact arm extendingforwards from the lower main body part; a first upper terminal provided with a first upper main body part, a first upper convex part which protrudes downwards from the first upper main body part anda first upper contact arm which extends forwards from the first upper main body part, wherein the first upper contact arm and the lower contact arm are arranged in a vertically spaced mode, and each first upper convex part is provided with a first upper welding plane which abuts against the top surface of the lower main body part downwards and is in laser welding with the top surface; second upperterminal. The group also comprises a second upper contact arm provided with a second upper main body part, wherein a second upper convex part convexly arranged downwards from the second upper main body part, and a second upper contact arm extending forwards from the second upper main body part; the second upper contact arm and the first upper contact arm are arranged in an up-and-down spaced mode, the second upper protruding parts and the first upper protruding parts are arranged in an up-and-down staggered mode, and each second upper protruding part is provided with a second upper welding plane which downwards abuts against the top face of the first upper body part and is in laser welding with the top face of the first upper body part.

The invention relates to the technical field of water treatment, and particularly discloses an organic sulfur sterilization algicide. The organic sulfur sterilization algicide is prepared from the following substances in parts by weight: 25-30 parts of a dithiocyano-methane coated particle, 6-8 parts of a surfactant, 1-2 parts of a thickening agent, 3-5 parts of a thixotropic agent, and 120-150 parts of water, wherein the dithiocyano-methane coated particle comprises a coating shell and a dithiocyano-methane particle inner core, and the coating shell is a chitosan coating layer. The chitosan coating layer coating the surface of the dithiocyano-methane particle can form a good dispersion structure in water, so the dispersion stability of the dithiocyano-methane particle is improved; and when the dithiocyano-methane particle is effectively dispersed in liquid needing to be treated, cytoplasm with anions in bacteria or algae cell bodies is adsorbed and flocculated, so the algae removal and sterilization effects of the single organic sulfur sterilization algicide are improved.

The invention discloses an antirust pigment for cathode electrophoretic paint and a slurry preparation method of the antirust pigment, the antirust pigment is composed of phosphonic acid anions and rare earth cations, and the phosphonic acid anions are one or a mixture of hexamethylenediamine tetramethylene phosphonic acid radicals, diethylenetriamine pentamethylene phosphonic acid radicals and ethylenediamine tetramethylene phosphonic acid radicals; the rare earth cations are one or a mixture of Ce3+ and La3+. The antirust pigment has proper solubility at 25 DEG C, has a good antirust effect,and does not destroy the stability of the cathode electrophoretic paint emulsion. The invention also discloses a preparation method of the antirust pigment slurry. The obtained antirust pigment slurry can be effectively co-deposited with cathode electrophoretic paint.

The invention discloses a false data injection attack design and defense method of a DC microgrid. Inject malicious false data into the network communication messages in the secondary control layer of the DC microgrid. At the same time, considering the initial state estimation deviation and measurement noise in the original detection process, a covert data injection attack method is designed to disturb the current / voltage without affecting the existing attack detection indicators. The analysis shows that the covert data injection attack will affect the average voltage value of the coupling point in the DC microgrid. The proportional-integral dynamic average consensus algorithm is used to estimate the average voltage value of the coupling point in the DC microgrid, and based on the average voltage value of the coupling point Voltage deviation detects this covert data injection attack. Finally, the proportional-integral compensation mechanism is used to compensate the average voltage deviation of the coupling point, adjust the secondary control input, and re-establish the voltage balance in the DC microgrid.

The invention discloses chocolate popping beads, fruity sauce containing the chocolate popping beads and a preparation method thereof. The preparation method of the chocolate popping beads comprises the steps: 1, placing a popping bead wrapping skin solution is placed in a vibrating screen so that the popping bead wrapping skin solution circularly flows from the top of the vibrating screen to the bottom of the vibrating screen; and 2, dripping the blasting bead center liquid under the pressure of 0.02-0.08 bar, and condensing the blasting bead center liquid dripped into the blasting bead wrapping skin solution to form the popping beads. The preparation method of the fruity sauce comprises the following steps: S1, preparing a colloidal solution, namely preheating water to 70-80 DEG C, adding pectin and a sweetening agent, stirring and circulating at 1000-1400 rpm for 10-15 minutes, and cooling to 40-45 DEG C to obtain the colloidal solution; s2, adding the popping beads into the glue solution, uniformly stirring at 30-60 rpm, adding edible essence, adjusting the acidity, and adjusting the pH value to 3.7-4.2 so as to obtain a pre-prepared fruity sauce; s3, sterilizing and filling: sterilizing, cooling and filling the pre-prepared fruity sauce to obtain the fruity sauce. The chocolate popping beads are high in uniformity, the flavor of the popping bead center liquid is well released, and the fruity sauce can be used for normal-temperature yoghourt.

The invention relates to a beam-island-diaphragm integrated resonant pressure sensor structure and a manufacturing method thereof and aims at providing a beam-island-diaphragm integrated resonant pressure sensor structure and a manufacturing method thereof. The beam-island-diaphragm integrated resonant pressure sensor structure comprises a resonant beam, a pressure-sensitive diaphragm and two silicon islands arranged on the pressure-sensitive diaphragm; the resonant beam is arranged between the two silicon islands; and an excitation resistor and a piezoresistor are formed on the resonant beam.The pressure-sensitive diaphragm, the silicon islands, and the resonant beam are formed by corrosion with an anisotropic etching solution of a silicon wafer with the surface (100); the silicon waferis corroded in the anisotropic etching solution to form the pressure-sensitive diaphragm and the silicon islands and the silicon below the resonant beam is corroded from the surface (111) to release the resonant beam along the (110) crystal orientation, so that an integrated beam-island-diaphragm structure is formed. The resistivity of the silicon wafer is less than 0.1omega.cm; and the doping concentration is less than the self-stop corrosion concentration. The beam-island-diaphragm integrated resonant pressure sensor structure and the manufacturing method thereof are suitable for the MEMS field.

The invention relates to an emulsion heater comprising a shower nozzle, an emulsion heating system and an emulsion supply system; the emulsion heating system is arranged in the shower nozzle, and theemulsion supply system continuously supplies body lotion to the emulsion heating system. According to the emulsion heater in the invention, the shower hot water is skillfully utilized to automaticallyheat and keep the body lotion warm without the processes of sub-package, starting, cleaning container, and the like of a common emulsion heater, and convenience is brought to life.