49results about How to "Rate of change" patented technology

The invention discloses a method for preparing monodisperse emulsion and belongs to the technical field of emulsion. The monodisperse emulsion is prepared by using a tube-in-tube annular channel reactor; a continuous phase is introduced into an outer tube of the tube-in-tube annular channel reactor, a disperse phase is introduced into an inner tube of the tube-in-tube annular channel reactor, and the continuous phase and the disperse phase fully contact on micropore parts to form the emulsion; and according to the method, equipment is simple, cost is low, flux is high, and continuous operation can be realized, so that the preparation cycle can be greatly shortened, and production efficiency is improved. The emulsion prepared by the method is high in quality, stable in performance, and high dispersibility; and emulsion droplets are uniform in particle size.

An ECU transmits a pulsed operation command signal, indicating operation commands for an electric motor used as a VVT actuator, to an electric-motor EDU. The electric-motor EDU recognizes the combination of the direction in which the actuator should be operated (actuator operation direction) and the control mode based on the duty ratio of the operation command signal, and the rotational speed command value based on the frequency of the operation command signal. The electric-motor EDU controls the electric motor according to the control commands. The duty ratio indicating the combination is set such that even if the duty ratio is falsely recognized, a false recognition concerning the actuator operation direction is prevented, such false recognition causing the valve phase to change in an undesirable direction, and even if the actuator operation direction is falsely recognized, the rate of change in the phase is restricted.

The invention discloses a method for preparing nanoscale boron modified HZSM-5 by seed crystal directing. The method comprises the steps as follows: (1) mixing an aluminum source, a silicon source, an alkali source, a boron source, ZSM-5 molecular sieve seed crystals and water, adjusting the pH of an obtained mixture to 10-12 and mixing the mixture uniformly to form gel; (2) crystallizing the gel in a reactor, and performing solid-liquid separation, washing and drying on a crystallized product to obtain a dried crystallized product; (3) adding the dried crystallized product in an ammonium salt solution for ion exchange to obtain an ammonia type ZSM-5 molecular sieve; (4) roasting the ammonia type ZSM-5 molecular sieve to obtain HZSM-5. The invention further discloses a molecular sieve prepared by the method and application of the molecular sieve in a reaction of methanol to propylene. The boron modified HZSM-5 requires no roasting of a template agent and is environment-friendly, the propylene yield and the service life are greatly increased, the selectivity of propylene reaches 44.0wt% or higher, and the service life reaches 500 h or longer.

The invention relates to an activated carbon granule of load quantum dots as well as a preparation method and application thereof. The granule is a nanometer compound particle taking activated carbon as a core and quantum dots as a shell, wherein the grain size of the activated carbon is from 30 nanometers to 1 micrometer, and the quantum dots are attached to the surface of the activated carbon through the electrostatic adherence function. The preparation method comprises the steps of: directly adding the quantum dots into the activated carbon with opposite electric property, or decorating positive charge macromolecules on the surface of the activated carbon; and loading the negatively charged quantum dots on the activated carbon through a layer-by-layer electrostatic adherence method to form the compound particle. The invention has the advantages that the obtained compound particle has multiple functions of photodynamic therapy, photoinduced thermal therapy, pigmentation, imaging, and the like, the toxicity of the quantum dots can be reduced, the metabolic pathway and speed of the quantum dots in bodies can be changed, and the application potential of the quantum dots in the medical field can be improved.

In a terahertz imaging system, a light beam (115) tracks a scanning component (105) for scanning a field of view in order to obtain positional information. The tracking beam (115) may be steered by the scanning component (105), for example, by means of reflection, refraction or diffraction. The steered tracking beam (125) can then be detected by a spatially sensitive detector such as a charge-coupled device array (135). In a preferred embodiment, the output of a terahertz detector (130) receiving terahertz radiation from a scanned field of view (170) is used to modulate the tracking beam (115). This means that the spatially sensitive detector (135) can provide an image directly derived from the scanning of the field of view by terahertz radiation.

A stroke detection apparatus performs a stroke detection of 4-cycle engine based on a rotary engine speed when a throttle opening is large. A first crank-pulse time interval between a crank pulse inputted before a top dead center by 30°, and a crank pulse of the top dead center is measured by a pulse-interval calculation unit, and at the same time, a second crank-pulse time interval between a crank pulse inputted after the top dead center by 60° and a crank pulse inputted after the top dead center 90° is measured. An interval difference calculation unit calculates time-interval difference by subtracting the second crank-pulse time interval from the first crank-pulse time interval, for two continuous top dead centers. A stroke detection unit determines whether two top dead centers are a compression top dead center or an exhaust top dead center based on magnitudes of the time-interval differences.

The invention discloses an experimental system and method for studying an action mechanism of explosive stress waves of surrounding rock. The system can change surrounding rock stress, the number of cartridge bags, the positions of the cartridge bags, the explosive charge amount, the explosive hole diameter and the like, and analyze the action mechanism, cracking speed and crack propagation situation of the explosive stress waves on the rock mass by reading strain data of the rock mass around blast holes in the instantaneous blasting process. The system for studying the action mechanism of theexplosive stress waves of the surrounding rock can study the action mechanism on a test piece when the explosive stress waves are generated, the effects of the explosive stress waves during crackingof a crack of the test piece and the effect and rule of superposition of the explosive stress waves under confining pressure of different strengths, and more deeply study the fracture dynamics theoryand stress wave theory on this basis.

The invention provides a magnetic medium assisted plate punching forming device and method, and relates to a plate flexible medium assisted punching forming device and method. The magnetic medium assisted plate punching forming device and method are used for solving a series of problems that during traditional plate punching forming, scratches, buckling deformation, too large burrs, poor fracturesurface quality and tipping caused by imbalanced force bearing of a punch are easily generated. According to the device, a coil 10 is embedded into a female die 5 and connected with a magnetic controlunit 6, a pressure sensor 7 is arranged in a sealing block 8, a magnetic medium 14 is injected into a cavity defined by the sealing block, a liquid storage chamber 5-1 and a plate blank 13, and the arrangement state and the rheological property of the magnetic medium are adjusted through the magnetic control unit 6. According to the method, the magnetic medium 14 with different particle volume fractions is injected into the liquid storage chamber 5-1 of the female die 5 through a plunger cylinder 4, different backpressure force transmission effects are achieved for the plate blank 13 in the punching process under adjustment and control of the magnetic control unit 6, the force bearing state and the deformation behavior around a plate punching region are changed, and improvement of the quality of punching parts is promoted. The method can quantitatively adjust and control the effect of a force transmission medium according to the actual working condition requirements, and the device and the method are suitable for punching forming of high-quality metal plates.

The invention relates to an intelligent mechanical tillage boat. The intelligent mechanical tillage boat includes a boat body component, a rotary tillage component and a lifting component; the boat body component includes a boat body, a power component, two water wheels and a front wheel, wherein the water wheels are symmetrically installed on the outside of the boat body, and the power componentis arranged inside the boat body. According to the intelligent mechanical tillage boat, the power component in the boat body component is used for driving, and accordingly the water wheels are drivenby to operate to control the movement of the boat body; a user terminal is used for sending control instructions to control the direction of movement of the boat body, accordingly the tillage positionof the rotary tillage component is changed, and on-site monitoring data is obtained by a monitoring probe; a wireless transmission unit is used for transmitting the on-site monitoring data to the user terminal in real time so that a user can observe and analyze the tillage situation in real time and send different control instructions to effectively adjust the direction of movement of the boat body; the effect of unmanned tillage by the mechanical tillage boat is realized, the tillage intensity is reduced, and the durability and precision of tillage are improved.

The invention discloses a reservoir gate frequency converting control device which relates to opening-closing control of a reservoir entering access door of an energy storage power station. The reservoir gate frequency converting control device comprises a display screen monitoring device (1), a programmable logic controller (PLG) (2) and a frequency control speed regulation device (3), the display screen monitoring device (1) adopts a Siemens K-PT177B type color touch screen, the frequency control speed regulation device (3) adopts an MM440-45KW type frequency changer, the display screen monitoring device (1) is used for displaying various state quantities including gate aperture, gate speed, frequency changer frequency, frequency changer current and opening-closing time, used for setting various parameters and protection limiting values of the parameters and further used for displaying alarm when exceeding the limiting values of the various parameters. The reservoir gate frequency converting control device is simple in structure and strong in function, adopts the color touch screen to operate, set, display and alarm, achieves smooth starting of a motor through the frequency changer and is high in safety.

The invention relates to an inside engaged gear pump or gear motor device with a multilayer structure. The device comprises an inner rotor, N layers of double-faced toothed ring sleeves, an outer rotor and a pump body, wherein N is a positive integer more than or equal to 1; the inner rotor, the double-faced toothed ring sleeves and the outer rotor are sequentially arranged in the pump body from inside to outside; the tooth faces of the inner rotor, the N layers of double-faced toothed ring sleeves and the outer rotor are in a mutual contact engaged state; at least two sealed accommodation cavities are formed between adjacent elements of the inner rotor, the N layers of double-faced toothed ring sleeves and the outer rotor; and rotating axes of the inner rotor, the N layers of double-faced toothed ring sleeves and the outer rotor are positioned in the same plane, and are not overlapped. The double-faced toothed ring sleeves are additionally arranged between the inner rotor and the outer rotor, so that a volume between the rotor can be multiplied under the condition of no increase of widths of the rotors; and by the elastic compensation function of the double-faced toothed ring sleeves, a requirement on the machining accuracy of the inner and outer rotors of the device can also be lowered, so that machining difficulty and maintenance cost are lowered.

The invention discloses an intelligent lithium battery diaphragm tension control device. The intelligent lithium battery diaphragm tension control device comprises a PLC a driving motor, two servo drivers and a display, the servo drivers are connected with servo motors, incremental encoders are arranged on the servo motors, the output ends of the servo motors are connected with diaphragm transmission rollers through gearboxes, and the two diaphragm transmission rollers are separately located at the input end and the output end of a lithium battery diaphragm. The output end of the driving motoris connected with a marking roller, the marking roller is located at the input end of the lithium battery diaphragm, and a plurality of hole punching cutters are evenly distributed on the end part inthe circumferential direction. The hole punching cutters are matched with the diaphragm transmission roller located at the input end of the lithium battery diaphragm, and a photoelectric sensor is arranged near the output end of the lithium battery diaphragm, and the photoelectric sensor corresponds to the side of the lithium battery diaphragm. The intelligent lithium battery diaphragm tension control device can correct position information of the lithium battery diaphragm in time, a transmission system of the whole lithium battery diaphragm is enabled to be more stable and reliable, and thequality and output of the lithium battery diaphragm are improved.

The invention discloses tooth whitening gel as well as a preparation method and use method thereof. The gel contains the following raw materials in parts by weight: 0.7-0.9 part of carbomer, 18-22 parts of hydrogen peroxide, 0.04-0.06 part of EDTA-2Na, 0.6-0.8 part of triethanolamine, 0.15-0.25 part of potassium nitrate and 12-18 parts of a PBS buffer solution. The preparation method comprises thefollowing steps: fetching carbomer and water, and stirring; and adding hydrogen peroxide, EDTA-2Na, triethanolamine, potassium nitrate and the PBS buffer solution. Peroxy-radical ions in tooth whitening gel are stimulated by virtue of a blue light stimulating instrument so as to release hydrogen peroxide molecules, the hydrogen peroxide molecules generate oxidation-reduction reaction on the surfaces of teeth, and then pigments attached to the teeth are removed, so that the aim of safe and efficient tooth whitening is achieved.

The invention discloses a method for improving meat quality through ultrasonic assisted heat treatment. The method comprises the following steps: A, cutting a fresh meat product into blocks; B, performing ultrasonic assisted heat treatment on the materials obtained in the step A; and C, performing quick-freezing treatment on the materials after the ultrasonic assisted heat treatment is completed.The invention further provides a method for quantitatively identifying the meat quality after the ultrasonic assisted heat treatment. The quality indexes of the meat after the ultrasonic assisted heattreatment are comprehensively and quantitatively identified by the following determination methods: endogenous enzyme activity determination, texture TPA determination, total bacterial count determination, TBARS value determination, carbonyl content determination, myofibril fragmentation index MFI determination and TCA-dissolved peptide content determination. According to the method disclosed bythe invention, a yellow-feathered chicken raw material suitable for traditional Chinese stewing is obtained, the taste of the stewed chicken can be improved, the appearance of the yellow-feathered chicken can be improved, and the shelf life can be prolonged.

The invention discloses anti-car-smashing lane gate equipment comprising a gate. A working cavity is formed in the gate. A second rotating shaft extending left and right is rotationally connected intothe right side wall of the working cavity; a second bevel gear is fixedly arranged at the extending tail end of the left side of the second rotating shaft; a brake arm is fixedly arranged at the extending tail end of the right side of the second rotating shaft; a balance rotating strip is arranged in the working cavity; and a first rotating shaft extending backwards is fixedly arranged in the center of the balance rotating strip. The anti-car-smashing lane gate equipment is simple in mechanism and easy and convenient to use; a radar or a coil is replaced with a spring block to achieve rod lifting and falling of the gate, so that a rod lifting mistake and car smashing caused by external accidental factors are avoided; a ball valve is further arranged and the speed of controlling the brakearm to ascend or descend through the hydraulic device can be changed, so that the use requirements on different occasions are met.

The invention provides a tiny-particle optical fiber directional driver moving along the side polishing and slotting direction and a method. The driver comprises a section of straight or bent optical fiber; one end of the optical fiber is connected with a light source; a polishing area and a slot are arranged on the side of the optical fiber; the slot is positioned in the polishing area right above a fiber core of the optical fiber; and the polishing area and the slot lead transmission lights in the fiber core to transmit a clapping layer and enter a slotting area so that driven tiny particles can freely pass in an evanescent field mode. The driver is mainly used for driving the tiny particles such as biological molecules, biological cells, nanometer clusters, colloidal particles, media particles and the like; the driving speed and the driving distance of the tiny particles are changed by adjusting the input light intensity of the optical fiber or the bending radius of the optical fiber; and the directional driving of the tiny particles is very strong.

The invention discloses an equipment regulation and control device of a comprehensive energy system. The equipment regulation and control device comprises an energy supply center and a system management and control center for controlling all modules of the energy supply center to operate. The energy supply center provides a supply process from energy output to dispatch and use and at least comprises an energy production module, an energy supply module used for transmitting all output energy, a cooperative conversion transmission module and an energy storage module, wherein the energy production module can be at least divided into a renewable energy group and a non-renewable energy group; the system management and control center at least comprises an energy control module which controls conversion and distribution of each energy source in the energy source production module. Multiple groups of energy classifications are set according to the energy characteristics, the supply amount of each type of energy is controlled according to the productivity benefit of each energy monitored in real time, and the energy is saved and the environmental pollution is weakened by improving the energy production amount and the supply rate of clean and energy-saving types under the condition of conforming to the use conditions.

The invention discloses an automatic feeding and discharging high-speed chip mounter which comprises a workbench, a first box body is installed on the left side of the top of the workbench, a chip mounter is installed on the right side of the top of the workbench, and a chip pushing assembly is arranged on the left side of the top of the workbench. Through the rotary connection relation between a second short handle and a third short handle, the fixed relation between a vertical block and a square block, and empty grooves processed in the front and rear end faces of a second box body, the vertical block shifts a bonding pad to enable the bonding pad to leave the second box body, so that a chip mounter is matched with the bonding pad at the same time, the chip mounter better carries out chip mounting on the bonding pad, the control is convenient, a second short rod is rotationally connected with an elliptical plate, and a sixth short rod is rotationally connected with a first cross rod through a short seat, so that the elliptical plate is driven by a second motor to enable a second cross rod to operate along an elliptical track, and then the bonding pad plate is continuously fed for equal time through a sliding rail.

The invention relates to the field of buildings, in particular to an automatic fixing piling device. The automatic fixing piling device can fix timber piles with uneven thickness and adjust the fixed height and the speed and the height of piling, so that the striking force and the striking frequency are adjusted. The automatic fixing piling device comprises a fixing device, a piling device and a lifting device. Timber piles with different thicknesses can be fixed through rotation of a first gear; the height of upper and lower power arms can be adjusted by rotating a knob, so that timber piles with different heights are fixed; the rotating speed of a special-shaped wheel and the rotating speed of a round wheel can be changed by adjusting the position of a motor in a motor notch, thus the lifting and falling speed of a vertical rod and a gravity column is changed, and the timber pile beating frequency is changed; and the height of the gravity column can be adjusted by rotating a lifting knob, so that the piling height is changed, and the piling strength is further changed.

The present invention discloses a preparation method of a GaN-based light emitting diode. The method comprises a substrate; a N-type GaN layer is grew on the substrate; a quantum well layer is grew on the N-type GaN layer; a quantum well layer is grew on the N-type GaN layer, a P-type GaN layer is grew on the quantum well layer; and the N-type GaN layer or/and the P-type GaN layer employ temperature varying growth, and the temperature in the temperature varying growth is the periodicity fluctuation temperature. The N-type GaN layer or/and the P-type GaN layer employ temperature varying growth so as to improve the crystal quality of the N-type GaN layer or/and the P-type GaN layer and enhance the luminescence efficiency of the GaN-based light emitting diode.

The invention discloses a biochemical analyzer feeding unit dissolving and stirring mechanism which comprises an upper-layer disc carrier plate and a lower-layer disc carrier plate; a mandrel is mounted in the centers of the upper-layer disc carrier plate and the lower-layer disc carrier plate through bearing assemblies, a series of penetrating through holes are distributed in the peripheral edges of the upper-layer disc carrier plate and the lower-layer disc carrier plate, and rotary drum components are mounted in the through holes through shaft sleeves; edge gears are fixedly sleeved on the outer sides of the rotary drum components, a central gear is fixed on the mandrel and meshed with the edge gears, a driven gear is arranged on the lower portion or the edge of the lower-layer disc carrier plate, a rotary driving motor is mounted on the base, a driving gear is mounted on a rotary shaft of the rotary driving motor, and the driving gear is meshed with the driven gear. Corresponding reagent container components located on the edges of the upper-layer disc carrier plate and the lower-layer disc carrier plate can autorotate while revolving, the autorotation mixing and stirring effect of a single reagent container component is achieved through autorotation, and the revolution mixing and stirring effect is achieved by changing the revolution speed.

The invention relates to a system and a control method for bacterium prevention and itch relief of patients with skin diseases. The system comprises an examination system, an ultraviolet lamp, a box body, a box door and a laid lamp tube; a pedestal is arranged in the box body, the pedestal comprises a supporting rod and an annular chamber, the supporting rod is provided with fumigators, the annular chamber is connected to the end part of the support rod, a rotating table and a cover plate are arranged above the pedestal, the rotating table is placed at the center position of the cover plate, and the cover plate is provided with an annular groove matching with the annular chamber and a patient selects phototherapy treatment and fumigation treatment by buttons on a glass cover, the reasonable time is calculated by an arithmetic unit in a single-chip microcomputer according to the similarity percentage, and is transmitted to a controller, the controller starts a treatment mode, and the arithmetic unit carries out time monitoring. The phototherapy and the fumigation treatment are combined without affecting each other, so the problems of high purchasing cost and large occupied area during use are solved; and the examination system controls the treatment, so the phenomenon of too long or too short treatment time is avoided.