24results about How to "Overcome disadvantages" patented technology

The invention relates to an easily-activated Ti-Fe-Y-Mn-Zr-Co-Zn-based hydrogen storage alloy and a preparation method thereof, belongs to the technical field of hydrogen storage alloy materials, and solves at least one of the problems of high activation difficulty, long activation period, poor hydrogen absorption and desorption dynamic performance and the like of a Ti-Fe-based hydrogen storage alloy in the prior art. The invention provides a Ti-Fe-Y-Mn-Zr-Co-Zn based hydrogen storage alloy easy to activate, the chemical formula of the hydrogen storage alloy is Ti 1.15, Fe 0.8, Y 0.03, Mn 0.35-x-y-z ZrxCoyZnz, x, y and z are atomic ratios, x is larger than or equal to 0.05 and smaller than or equal to 0.15, y is larger than or equal to 0.02 and smaller than or equal to 0.1, and z is larger than or equal to 0.02 and smaller than or equal to 0.1. The Ti-Fe-Y-Mn-Zr-Co-Zn based hydrogen storage alloy provided by the invention obtains good activation performance and hydrogen absorption and desorption performance by means of component design and preparation process improvement, can be activated at one time under the conditions of 30 DEG C and 3 MPa, and has the hydrogen storage capacity of more than or equal to 1.69 wt.%, the hydrogen absorption platform pressure of more than or equal to 0.39 MPa and the hydrogen desorption platform pressure of more than or equal to 0.3 MPa.

The present invention relates a mechanical structure (also known as mounting structure) for installing cover plates of the pasta machine, a method for installing cover plates of the pasta making machine, and a pasta machine with brackets and cover plates.

The application belongs to the technical field of building construction, and discloses a connecting device and a connecting method for a steel pipe pile and a prefabricated pile cap. The connecting device for the steel pipe pile and the prefabricated pile cap comprises a steel pipe pile, a prefabricated pile cap and a connecting assembly, the steel pipe pile is connected with the prefabricated pile cap through the connecting assembly; the connecting assembly comprises a connecting piece, a shear-resistant piece and a pull-out-resistant piece, the connecting piece is arranged at the top of the steel pipe pile, the prefabricated pile cap is located at the top of the connecting piece, the connecting piece and the inner hole wall of the steel pipe pile form a pouring space, and the pouring space is filled with concrete; one end of the shear-resistant piece is located in the pouring space, the other end of the shear-resistant piece passes through the connecting piece and is inserted into the prefabricated pile cap; the pull-out-resistant piece passes through the connecting piece and is anchored to the prefabricated pile cap. The connecting device for the steel pipe pile and the prefabricated pile cap can stably connect the steel pipe pile and the prefabricated pile cap, effectively overcomes various disadvantages of cast-in-situ pile caps, reduces the time of wet work on the construction site, and improves the controllability of the construction quality and the applicability in urban projects.

The present invention discloses an exterior wall structure with an assembled press-type self-locking phase change material layer, wherein the exterior wall structure is composed of a wall layer, a shaped phase change board layer and a heat insulation layer from the inside to the outside, wherein: the wall layer is provided with a substrate and a press-type self-locking base; the shaped phase change board layer is connected to the wall layer by a press-type self-locking base, and includes a shaped composite phase change wallboard and a composite phase change material, the shaped composite phase change wallboard is composed of a plurality of polycarbonate hollow boards assembled in a modular manner, and the polycarbonate hollow board is provided with a first groove and a second groove; the composite phase change material is filled into the first groove of the polycarbonate hollow board, and the composite phase change material is made of a phase change material using a porous adsorption matrix; the heat insulation layer includes at least one group of heat insulation wallboards, and the heat insulation board of each group of heat insulation wallboards is at least partially inserted into the second groove. The exterior wall structure with an assembled press-type self-locking phase change material layer of the present invention can meet the phase change temperature requirements of different application scenarios and is easy to load and unload.

The invention relates to the technical field of mycoplasma staining, in particular to a simple and efficient mycoplasma staining detection method. The mycoplasma detection method is different from a DNA fluorescent staining detection kit method and a PCR method, the adopted staining solution is a common Gram staining solution, is non-toxic and low in price, and overcomes the limitation and defects of the traditional mycoplasma detection method, such as toxic detection reagents, harsh detection conditions, expensive detection instruments, complex and tedious detection methods and the like. The method has the advantages of simplicity in operation, low cost, good repeatability, good dyeing effect and the like, provides a novel detection method for mycoplasma detection, and is extremely wide in application.

The present invention relates to a large current AC constant current source and a method for arbitrarily adjusting the phases of multiple groups of output voltages thereof. The constant current source comprises an AC input terminal, an incoming line protection circuit, a diode semiconductor power unit, an energy storage capacitor, a thyristor semiconductor power unit, a filter circuit, a current boost transformer and an AC output terminal connected in sequence. The AC input terminal is also connected to a digital controller through a voltage sampling unit, and the AC output terminal is also connected to the digital controller through a current sampling unit. The driving signal of the digital controller is connected to a thyristor semiconductor control unit, and the output terminal of the thyristor semiconductor control unit is connected to the thyristor semiconductor power unit. The present invention uses a digital controller to control the thyristor semiconductor power unit in the constant current source, completely eliminates the current drift problem, overcomes the drawbacks of traditional electrical power supply devices, greatly improves the output current accuracy, reduces losses, and improves the stability of the constant current source.

The invention discloses special oil for a parking air heating machine and a preparation process thereof, and relates to the technical field of preparation of fuel oil, and the preparation process comprises the following steps: selecting a petroleum fraction containing C10-C16 alkane as a raw material, pretreating the raw material, and performing catalytic isomerization reaction to obtain a mixture of C13-C14 isoparaffin; the method comprises the following steps: separating and purifying a mixture of C13-C14 isoparaffin through a vacuum distillation process to obtain purified C13-C14 isoparaffin; the purified C13-C14 isoparaffin is subjected to deep dewaxing treatment, and the C13-C14 isoparaffin, namely the parking air heating machine special oil, is obtained; according to the special oil for the parking air heating machine and the preparation process thereof, the special oil for the air heating machine has a higher heat value, heat energy can be converted more efficiently, and the energy utilization efficiency is improved; and meanwhile, due to the characteristic of high condensation point, the oil product can keep flowability in an extremely cold environment, so that the air heating machine can normally operate at the low temperature of-65 DEG C.

According to the control system of the facial mask beauty instrument, different pieces of mask cloth are automatically recognized by recognizing the number of the electrodes, so that automatic switching of working modes of the facial mask beauty instrument is achieved, and the problem of manual switching of a user is solved; the polling detection technology is adopted to detect the electrode tip, so that error detection is avoided; during detection, the disadvantage that a single electrode is used as a detection electrode in a traditional system is overcome through the function of the reuse electrode; in addition, the EMS is used as an excitation source, and the normality of the output of the EMS is detected while the skin attaching state is detected, so that the detection precision of the electrode is improved.

The invention provides a D-pantothenic acid fermentation multi-target dynamic optimization method based on biological-digital twinning, which comprises the following steps: constructing a biological soft sensor through multiple machine learning model algorithms, and combining the constructed biological soft sensor with a neural network. Meanwhile, fermentation process conditions are optimized by applying a particle swarm algorithm and a genetic algorithm, so that the whole fermentation process simulation monitoring under data driving is realized, the problems of insufficient accuracy and poor robustness when a traditional prediction technology is used for processing complex fermentation data are effectively solved, and the predictability and controllability of the fermentation process are improved.

This disclosure relates to a polishing composition that includes at least one abrasive; at least one nitride removal rate reducing agent, an acid or a base; and water. The at least one nitride removal rate reduce agent can include a hydrophobic portion containing a C4 to C40 hydrocarbon group; and a hydrophilic portion containing at least one group selected from the group consisting of a sulfinite group, a sulfate group, a sulfonate group, a carboxylate group, a phosphate group, and a phosphonate group; in which the hydrophobic portion and the hydrophilic portion are separated by zero to ten alkylene oxide groups. The polishing composition can have a pH of from about 2 to about 6.5.

The present invention relates to a measuring device for detecting residual stress of transparent polymer materials and a method for measuring residual stress. The measuring device is composed of a measuring platform, a light source, a first polarizer, a first quarter wave plate, a ball screw device, a laser, a reflector device, a second quarter wave plate, a second polarizer, a CCD camera and a transparent polymer material model. The measuring device of the present invention is provided with a plurality of slideways on the measuring platform, and a plurality of optical components involved in the photoelastic method and the astigmatism method are assembled with the slideways in sequence by installing a magnetic base. During the measurement process, the corresponding optical components can be removed or the corresponding positions of the optical components in the slideways can be adjusted according to different measuring methods, thereby meeting the requirements of different measuring methods.

The invention discloses a method based on multi-layer doped Al 1‑x Sc x N ferroelectric thin film memory and its preparation method, comprising a silicon substrate layer, a TiN lower electrode layer, an Al2O3 layer with a Sc doping concentration of 12.5% ​​and a 0.875 Sc 0.125 N lower buffer layer, Al doped with Sc concentration of 25% 0.75 Sc 0.25 N ferroelectric material layer, Al doped with Sc concentration of 12.5% 0.875 Sc 0.125 N upper buffer layer, TiN upper electrode layer; the thickness of the TiN lower electrode layer and the TiN upper electrode layer are both 30 nanometers, Al 0.875 Sc 0.125 The thickness of N buffer layer is 10 nm, and Al 0.75 Sc 0.25 The thickness of the N ferroelectric material layer is 80 nanometers. The present invention is not only conducive to the high-quality growth of the material, but also improves the pressure resistance of the device, and its stability and reliability during operation are guaranteed. The existing ferroelectric memory manufacturing process can be further simplified, the operation is safe and simple, and the production cost can be reduced.

The utility model relates to a novel integrated machine head electromagnetic valve module which comprises a valve plate and a plurality of electromagnetic valves, a plurality of flow channels which are not communicated with one another are formed in the valve plate, the electromagnetic valves are all arranged on the valve plate, and the electromagnetic valves are connected with the valve plate in a sealing mode. The multiple electromagnetic valves and the multiple flow channels are sequentially communicated in series at intervals, or part of the electromagnetic valves and part of the flow channels are sequentially communicated at intervals. The valve banks are integrated on the valve block, and the valve banks are communicated by forming the flow channels in the valve plates, so that the defects of rigid connection between the traditional valve plates are overcome; the risk of gas leakage is reduced, the loss of pressure drop is reduced, and secondary pollution of gas is effectively avoided. The novel integrated machine head electromagnetic valve module is small in size, high in integration and good in durability, high-pressure gas is used for a long time, and the hidden danger of pipe explosion of a connector does not exist. The types of materials used after rigid connection are reduced, hidden expenses such as purchasing circulation and working hours of warehouse entering and exiting are saved, and then the installation efficiency is effectively improved.

The utility model discloses a kind of environmental protection type rubber plasticizer production and processing device related to plasticizer production equipment technical field, vertical plate surface is located between the barrel of top plate and bottom plate, both ends of barrel are open structure, movable plate that barrel upper end opening is equipped with and barrel inner wall interference sealing cooperation, barrel upper portion is equipped with movable seal and is injected into raw material oil into barrel, movable plate, and filter plate for filtering raw material oil in barrel is equipped in barrel lower end opening, top plate lower portion is equipped with and is connected with movable plate, and is used to push movable plate and press raw material oil in barrel to exert force lifting drive mechanism;The utility model not only can effectively improve the filtering efficiency of high-viscosity raw material oil by heating filtering mode, but also can agitate and collect impurity particles during filtering process, greatly improve the filtering quality of raw material oil.

The utility model relates to land management technical field especially relates to a land sampling device for land management, is provided with screw sleeve through the rotation of the limiting ring, is equipped with driven gear on screw sleeve, is provided with lifting screw in screw sleeve internal thread, is connected sampling cylinder through the fixed piece that is composed of two fixed nuts and fixed screw below lifting screw, the conical surface that has below sampling cylinder extends to the inside of installation cylinder, sets up installation box above installation cylinder, is rotatably arranged with the driving gear that meshes with driven gear in installation box, driving gear rotates through the rotating disc. This manual operation mode avoids using motor and battery, will not make the device overall weight because motor and battery and substantially increase, also will not cause motor and battery short circuit fault because of rainy season rainwater infiltration, the whole structure guarantees sampling function at the same time, effectively overcomes the drawbacks of motor drive mode in outdoor use.

The invention discloses a pile sinking method of a prefabricated tubular pile in rock, which comprises the following steps of: (1) surveying and setting out at a construction site, and determining a guide hole position; (2) adopting a high-power rotary drilling rig as pile foundation guide hole equipment, and performing guide hole grouting; (4) when the distance between the pile top of the first section of the prefabricated pipe pile and the ground is 0.5-1.0 m, hoisting a second section of the prefabricated pipe pile, performing pile splicing operation, continuing pile sinking, and after the distance between the pile top of the first section of the prefabricated pipe pile and the ground is 0.5-1.0 m, hoisting the second section of the prefabricated pipe pile and the ground is 0.5-1.0 m, hoisting the second section of the prefabricated pipe pile; and (5) pile sinking operation of other sections of prefabricated pipe piles is carried out according to the step (4) until the piles are formed. The method is safe, reliable and easy to construct, overcomes the defects of a traditional pile sinking construction method, is more economical and effective compared with the traditional pile sinking construction method, and can be widely popularized in actual construction.

A short circuit current-resistant and arc-extinguishing DC relay comprises two stationary contact lead-out ends, a movable spring plate in the form of a flat plate, a push rod assembly, an upper fixed yoke, an upper follower yoke, and a lower armature. The upper fixed yoke is fixed to the push rod assembly and positioned above the movable spring plate in a location corresponding to a location between two movable contacts. The upper follower yoke is fixed to the push rod assembly and positioned above the movable spring plate in a location corresponding to the location between the two movable contacts. The lower armature is fixed to a bottom end surface of the movable spring plate. The upper fixed yoke, the upper follower yoke and the lower armature are respectively arranged in a width direction of the movable spring plate, and form two magnetic conductive loops in the width direction of the movable spring plate. The above arrangement can enhance electromagnetic attraction, thereby achieving a short-circuit current resistance up to the 16kA level for a product.

The invention discloses a medicament for preventing both brown spot and wildfire of tobacco and a preparation and use method thereof, the medicament comprises the following raw materials by volume: 1 part of sodium alginate solution with concentration of 4-6 wt%; 1 part of a dictyophora indusiata effective active ingredient extract; and 2 parts of a 3wt% CaCl2 solution. The used prevention and control medicament is directly extracted from dictyophora indusiata, and the extracted dictyophora indusiata effective active ingredient extract has good bacteriostatic and bactericidal effects, so that the dictyophora indusiata effective active ingredient extract has a remarkable effect on prevention and control of tobacco diseases when applied to tobacco, and the replacement of a traditional physical and chemical method by biological prevention and control becomes possible; and a product applied to the tobacco leaves is environment-friendly and degradable, and the like.

This application proposes a thermal storage and heat exchange system and method. The thermal storage and heat exchange system includes a thermal storage and release medium in the form of solid particles; a heater for heating the thermal storage and release medium passing through the heater; a first storage tank located downstream of the heater for receiving and storing the heated thermal storage and release medium; a heat exchanger located downstream of the first storage tank for receiving the thermal storage and release medium, allowing the thermal storage and release medium to exchange heat with a first medium delivered to the heat exchanger; and a second storage tank located downstream of the heat exchanger for receiving the thermal storage and release medium. The discharge port of the second storage tank is connected to the heater. The thermal storage and heat exchange system uses solid particles as the thermal storage and release medium. Through the coordinated operation of the heater, the two storage tanks, and the heat exchanger, the thermal storage efficiency of coal-fired power plant coupling is improved, adapting to the needs of flexible retrofitting of coal-fired power plants.

The present invention proposes a mortar anchor support connection device, including an upper connecting plate, a lower connecting plate, a plurality of sleeves and a straight support rod; the sleeve can be sleeved on the outside of the mortar anchor, the upper connecting plate and the lower connecting plate are arranged in parallel up and down, the plurality of sleeves are respectively arranged on both sides of the upper connecting plate and the lower connecting plate, and the straight support rod is connected between every two upper and lower adjacent sleeves; wherein, the upper connecting plate and the lower connecting plate are respectively provided with connecting parts, and the tube wall of each sleeve is respectively provided with a screw hole, and a tightening screw is assembled in the screw hole. The present invention also proposes a mortar anchor support connection method, which is implemented by using the mortar anchor support connection device described above. The present invention does not require welding during connection, is convenient for construction, and ensures the timeliness of the initial tunnel steel support.

The invention provides a monitoring platform and a monitoring method thereof, and the monitoring platform is used for monitoring the power process of a large-scale mountain disaster water tank experiment device, and comprises a plurality of monitoring mechanisms which are sequentially arranged from the upstream to the downstream of the large-scale mountain disaster water tank experiment device, each monitoring mechanism comprises a top observation tower, a side observation well corresponding to the top observation tower and data acquisition equipment; the bottom monitoring modules are distributed in a multi-row array mode from the upstream to the downstream of the bottom of the large-scale mountain disaster water tank experimental device, and at least one bottom monitoring module is arranged in each monitoring mechanism. The method can overcome adverse conditions of a large-scale mountain disaster dynamics simulation experiment on dynamic process monitoring, accurately reflects the spatio-temporal evolution process of various dynamics parameters in the movement process of a disaster body, is clear in principle, clear in construction and high in construction operability, can be suitable for the large-scale mountain disaster dynamics simulation experiment, and has a wide application prospect. And a foundation is laid for kinetic research of complex media.

The invention relates to the technical field of spices, and in particular to a passion fruit aroma compound and a preparation method thereof and a passion fruit flavor essence. The passion fruit aroma compound has the following structural formula: The passion fruit aroma compound of the invention has a significant passion fruit-like aroma and a certain fruity sweet aroma, has a distinct aroma, and lasts for a long time, and has important market value in the field of flavor formulation of daily chemical products; and the preparation method of the passion fruit aroma compound is simple and efficient, and the operation and control are convenient, the product quality is high, the cost is low, and it is conducive to industrial production. At the same time, the prepared passion fruit aroma compound has a significant passion fruit-like aroma, and can effectively overcome the disadvantages of conventional fruit essences as flavor additives in the past; the essence prepared by using the passion fruit aroma compound has a passion fruit-like aroma and a certain fruity sweet aroma, and has good practicality.

The present disclosure relates to an apparatus, a process and a system for treating petroleum coke. The apparatus comprises an activation unit which is an annular furnace reactor. The system comprises a first reactor, the apparatus as a second reactor, a washing and separating unit, a cooling unit, a dissolving and separating unit, a washing and drying unit, optionally a regenerating unit, optionally a drying and calcining unit and optionally an evaporation-crystallization unit. Also provided is a process for producing carbon materials by using the system for treating petroleum coke. The apparatus, the process and the system in accordance with the present disclosure can achieve continuous production, and have advantages of high activation efficiency and stable properties of the resultant carbon material products.

A magnetic clutch comprises a driving shaft, a driven shaft, a clutch center body, a shell and a plurality of clutch mechanisms, the shell is fixedly connected with the driven shaft, the clutch center body is arranged in the shell, the middle of the clutch center body is fixedly connected with the driving shaft, inner holes are evenly formed in the clutch center body, and the clutch mechanisms are arranged in the inner holes. Each group of clutch mechanism comprises a clutch core rod, a movable magnet, a fixed magnet, a limiting nut and a clutch chip, the limiting nut is in threaded connection with the inner orifice, the movable magnet and the fixed magnet repel each other, and the clutch core rod sequentially penetrates through the movable magnet, the fixed magnet and the limiting nut from the middle and then is connected with the clutch chip. The clutch chip is separated from or tightly attached to the shell through the interaction of magnetic force and centrifugal force, so that the driven shaft is driven, rotation kinetic energy is transmitted to the driven shaft from the driving shaft, the clutch function is achieved, the higher the rotation speed is, the tighter the abutting force of the clutch chip and the shell is, the tighter the transmission force is, the structure is simple and direct, efficiency is high, manufacturing is easy, and cost is low. And the cost is low.