126results about How to "Meet activity" patented technology

The invention relates to an anti-carbon-deposition Ni-based catalyst for hydrogen production by methane steam reforming and a preparation method thereof. By taking lanthanum nitrate, praseodymium nitrate, samarium nitrate, yttrium nitrate, zirconium nitrate, zirconium carbonate, zirconium oxychloride, and the like as precursors and taking ammonia as a precipitant, a pyrochlore composite oxide is prepared through using a coprecipitation method; and then the pyrochlore composite oxide is mixed with alumina by using a mechanical mixing method so as to obtain a pyrochlore alumina composite carrier. Nickel nitrate, nickel chloride, nickel sulfate, nickel oxalate and the like serving as nickel sources are loaded on the pyrochlore alumina composite carrier through direct immersion. The loading capacity of nickel in the catalyst accounts for 5-30% of the weight of the catalyst, the pyrochlore content of the catalyst is 5-50%, and the alumina content of the catalyst is 20-90%. By taking the pyrochlore alumina composite oxide as a carrier, the reaction activity and anti-carbon-deposition performance of the catalyst can be greatly increased; the preparation method of the catalyst is simple; and the catalyst has excellent catalytic activity and stability to methane steam reforming in a stationary bed.

The invention relates to instant balls and a preparation method thereof. According to the formula, the install balls comprise the following raw materials by weight: 30 to 45 percent of minced fillet, 5.25 to 9 percent of chicken, 11 to 22.25 percent of fat pork, 6.25 to 10 percent of pork ham, 6 to 11.25 percent of potato starch, 8.25 to 17 percent of water, 1.35 to 1.90 percent of salt, 1.45 to 2.15 percent of sugar, 0.11 to 0.19 percent of polyphosphate, 0.31 to 0.44 percent of monosodium glutamate, 0.23 to 0.60 percent of seasoning fish meal, 1.5 to 2.5 percent of scallion, 0.75 to 2 percent of soy sauce, 0.08 to 0.18 percent of sesame oil, 0.08 to 0.20 percent of pork cream, 0.08 to 0.2 percent of meat fine powder, 0.25 to 0.75 percent of yellow wine and 1.25 to 5 percent of pigskin jelly. The skin of the instant balls has elasticity, white luster and crisp mouthfeel; and the stuffing has much soup, is oily but not greasy, and has pure taste.

The invention discloses a full-automatic grapefruit package production line, which is assembled by a rack, a transmission mechanism, a feeding mechanism, a cleaning mechanism, a drying mechanism, a material arranging mechanism, a film wrapping mechanism and a grading mechanism, wherein the rack is mutually and successively connected with the rack of each mechanism in a welding mode, the transmission mechanism is composed of the roll shaft transmission parts of the cleaning mechanism and the drying mechanism and the belt transmission parts of the feeding mechanism, the material arranging mechanism and the film wrapping mechanism. The invention overcomes the defects of low production efficiency, large labor strength, single function and low automaticity of the existing grapefruit package technology, has the advantages of artful design, simple structure, convenient manufacture, low cost and wide application range and can be used for directly packaging the grapefruit of different kinds and sizes in different producing areas. The invention efficiently, reliably, conveniently and directly reduces product loss and wastage and expands market sales range so as to satisfy the requirements of economic growth and improved living standards as well as improve economic benefit.

The invention discloses a molding technology of baked foods, a production system for baked foods, and baked foods, and belongs to the technical field of food production. The molding technology of the baked foods comprises the following steps of successively performing quantitative feeding, vibrating-leveling, quantitative grouting, multi-stage transition baking, multi-station cooling and counting-boxing, and carrying out sealing and molding. The baked foods comprise the following raw materials in parts by weight: 40-50 parts of walnut kernels, 40-50 parts of spina date seeds, 1-3 parts of black sesame seeds, 4-5 parts of longan flesh, 90-100 parts of flour, 50-60 parts of butter, 20-30 parts of white sugar, 20-30 parts of brown sugar, 50-60 parts of eggs, 2-3 parts of baking powder, 4-5 parts of soda powder, and 120-140 parts of water. The invention has the following beneficial effects: the baked foods are rich in nutrition, and satisfies living needs of current people; moreover, production-line mass production is realized by the molding technology and the production system used for producing the baked foods so that production efficiency and production quality are improved with cost reduced.

The invention relates to a temperature variation sensing and index calculating method of textiles. The method comprises the steps of testing a to-be-tested test sample in a required temperature and humidity environment after balancing; preheating a preheating test sample covered with an instrument hot plate, replacing the preheated test sample by utilizing the to-be-tested test sample, starting the test and recording a thermal power curve; defining a cold sensing time T as a peak of an initial section of the thermal power curve, i.e. a period of cold feeling time; defining the total heat loss W1 in the cold feeling time as the total heat loss of a unit area of the test sample in the cold feeling time T; defining the pure cold feeling heat loss W2 as the heat transferred from the human body to the textile due to the temperature difference at the beginning of the contact between the textile and the skin of a human body, wherein the pure cold feeling heat loss W2 is calculated in a way of subtracting the heat transferred by a unit area of test sample under the steady-state heat transfer condition within the period of time T from the total heat loss in the cold feeling time. The method is used for evaluating the temperature variation characteristic of a planar or curved fiber aggregation.

The invention discloses a processing method of dish-type instant food pickled cabbage fish packed to be shaped like a bowl and preserved at normal temperature, belonging to the technical field of processing and preserving of aquatic food. According to the processing method, a fresh fish and pickled vegetables are taken as primary materials, and the dish-type instant food pickled cabbage fish product packed in the bowl and preserved at normal temperature is prepared by the processes of preprocessing the raw materials, deodorizing and tenderizing the fish, frying to change color, seasoning, adjusting acid, tinning, sealing, conducting low-intensity sterilization and rapidly cooling. The dish-type instant food pickled cabbage fish product produced by the method disclosed by the invention completely preserves original flavor, texture, color and luster and nutrition of pickled cabbage fish dish, is high in safety and long in quality guarantee period, and is packaged by a bowl-shaped container; no chemical preservative is added in the processing process; and the dish-type instant food pickled cabbage fish is simple to open, convenient to eat, and wide in market prospect, can be heated by microwaves, and meets the demands on food nutrition and taste required by modern consumers and rapid pace of life.

A processing technology of leather fiber fleece, its main feature is to select, color-separate and trim the leftover leather materials in different periods and add the required water, penetrant, slaked lime, softening treasure and ammonium sulfate in the drum equipment. Reverse-rotate brushing, dry and fluff the leather fiber fleece to become a leather fiber product, the fiber length of which is not less than 16 mm. The invention recycles the leftovers of the leather fiber into the leather fiber fleece through a scientific processing technology, so as to make the leather fiber fleece Fiber fleece is woven into cloth to meet the needs of industry and life.

The invention discloses a catalyst and a preparation method thereof, in particular to a hydrogen production catalyst with high-temperature methyl alcohol water vapour and a preparation method thereof. The catalyst comprises active components of VIII group metal and auxiliary agent and also comprises modified Al2O3 spherules serving as a carrier, wherein, the sharing carrying capacity of the active components occupies 2.6-10wt% of the carrier, and the ratio of the active components to the auxiliary agent ZnO is 0.24-0.38:1. The catalyst has high reaction activity, high stability and simple manufacturing method, can lower cost and adopts the method of cocurrent flow dipping and ultrasonic dispersion, so that noble metal has small use amount and little waste, which can satisfy the requirement of the activity and service life of catalyst by industrialization. The catalyst of the invention can be applied in the fuel battery hydrogen supplying field on a large scale.

The invention provides a smart old-age service information interaction system and method, and the method comprises the steps: receiving an old-age service request inputted by an old person from an intelligent terminal; obtaining the vital sign data of the old person from vital sign monitoring equipment, and transmitting the vital sign data to a medical care service platform; receiving the health assessment condition of the old person from the medical care service platform; transmitting the old-age service request of the old person to a happy old-age service platform when the old person is healthy, receiving an old-age service item from the happy old-age service platform and transmitting the old-age service item to the intelligent terminal so as to guide the healthy old person to enjoy the happy old-age service; receiving a medical care scheme given by a doctor from the medical care service platform when the old person is a weak, ill or disabled old person, ad transmitting the medical care scheme to the intelligent terminal so as to guide the weak, ill or disabled old person to enjoy the healthy old-age service. The method can enable the medical resources and old-age service information to be fully shared and utilized, and helps the old person enjoy the healthy and happy old-age services.

The invention discloses a plastic thin film and a preparation method thereof. The plastic thin film is prepared from the following raw materials in parts by weight: 40 to 70 parts of polyvinyl chloride, 40 to 60 parts of acrylic resin, 8 to 13 parts of polyethylene wax, 10 to 18 parts of talcum powder, 5 to 9 parts of organized montmorillonite, 30 to 50 parts of polyvinyl alcohol, 8 to 16 parts of sodium-titanium phosphate, 12 to 24 parts of polyacrylamide, 1.5 to 3 parts of dicumyl peroxide, 1 to 3 parts of antioxidants, 8 to 13 parts of calcium carbonate, 0.3 to 0.7 part of silane coupling agents, 8 to 13 parts of dioctyl phthalate, 1 to 3 parts of light stabilizers, 3 to 7 parts of glyceryl tristearate, 1.5 to 5 parts of styrene-acrylonitrile copolymers and 0.8 to 1.8 parts of plasticizing agents. Compared with the prior art, the plastic thin film has the advantages that the tensile strength of the plastic thin film is high; the preparation process is simple.

The invention relates to a Byzantine consensus method and system, belongs to the technical field of block chains, and solves the problems that the performance of three-stage consensus in the prior artis obviously lower than that of non-Byzantine consensus, and the consistency and freshness of the Byzantine consensus are difficult to balance, so that a compromise is difficult to achieve in performance, error-tolerant rate and network environment. The Byzantine consensus method comprises a proposal stage and a subsequent preparation stage, and the preparation stage comprises the following steps: voting and broadcasting a message for the first time; receiving the message and verifying the legality of the message; and counting the legal first voting number N1, and when N1 is greater than or equal to 3.5 f + 1, directly confirming the message in the preparation stage without the need for the subsequent confirmation stage, the number of nodes participating in the Byzantine consensus being 4f + 1, and f being the number of Byzantine nodes. Three-stage consensus is evolved into two-stage consensus, and consistency and freshness can be met, so that a good compromise is achieved in performance, error-tolerant rate and network environment.

The invention discloses a stuffed fish roe sausage. The stuffed fish roe sausage is prepared from a pulp wrapper and stuffing, and is characterized in that the pulp wrapper is prepared from the following raw materials in parts by weight: 50 to 60 parts of grade AA freshwater fish millet, 3 to 7 parts of potato starch, 0.1 to 0.2 part of a moisture retention agent, 0.1 to 0.2 part of glutamine transaminase, 1 to 3 parts of table salt, 20 to 24 parts of white granulated sugar, 0.4 to 0.8 part of monosodium glutamate, 0.002 to 0.008 part of ethyl maltol, 1 to 3 parts of fresh egg white, 1 to 3 parts of fat meat and 6 to 7 parts of ice water; the stuffing is prepared from the following raw materials in parts by weight: 8 to 12 parts of flying fish roe, 3 to 7 parts of potato starch, 0.1 to 0.2 part of glutamine transaminase, 2 to 3 parts of table salt, 1 to 3 parts of white granulated sugar, 0.4 to 0.8 part of monosodium glutamate, 0.005 to 0.015 part of ethyl maltol, 1 to 3 parts of fat meat, 1 to 3 parts of fresh yolk, 0.2 to 0.4 part of fresh garlic, 0.2 to 0.4 part of carrot and 6 to 7 parts of the ice water. The stuffed fish roe sausage provided by the invention has the characteristics of having low fat, much protein, high nutrients and delicious taste, being pure natural and being easy to absorb and the like, caters for living habits and taste requirements of modern people and meets healthy and rapid-pace life of modern people.

The invention discloses a synthesis method of cyclic pentapeptide. According to the synthesis method, the 'solid-liquid combined production' strategy is adopted, a proper condensation agent is used for a condensation reaction, linear pentapeptides are prepared respectively through a proper process, the cyclization site is located between N-methyl-leucine and leucine, and the efficiency of linear peptide preparation is effectively improved.The proper condensation agent is used for the condensation reaction, racemization in amido bond formation can be effectively reduced, therefore, the purity of a target product can be effectively improved, reaching 99% or above, the requirements of biological activity tests and clinical application can be fully met, and the synthesis method of cyclic pentapeptide has high medical value. The cyclization agent PyBOP is used for a cyclization reaction, the cyclization yield can be effectively increased and reach up to 84.2%.The synthesis method does not require complex purification by column chromatography, redundant amino acids can be simply washed away, the synthesis process is simple, the cost of raw materials is low, reaction conditions are mild, the purity is high, industrialization is easy, and the synthesis method has broad market prospects.

The invention provides a production method of low-temperature sterilized surimi products capable of being storage at room temperature. The production method of the low-temperature sterilized surimi products capable of being storage at room temperature comprises the following steps: carrying out thawing, carrying out air cut, carrying salt cut, carrying out mixed cut, carrying out vacuum degassing, carrying out filling so as to prepare sausages, carrying out gelatinizing, and carrying out low-temperature sterilizing. Glucono delta-lactone, as well as crushed ice, soy protein isolate, starch, locust bean gum, scallion and ginger juice, cooking wine, white pepper powder and edible salt, is added into the surimi products prepared by utilizing the production method so as to reduce the pH of the surimi gel and enhancing the bacteriostatic capacity of the surimi gel; thus, growth of most microorganisms can be inhibited. Moreover, a vacuum packing way is combined, and the sterilizing method is designed and optimized so as to achieve the purpose of normal-temperature storage; thus, the damages caused by high-temperature sterilizing on the qualities of the surimi are greatly reduced so as to improve the nutritive values and the edible values of the surimi products. Circulation of the surimi products and edible convenience of the consumers are thereby facilitated.

The invention relates to the technical field of desert plant protection devices and provides a windproof and sand-resisting desert plant protection device. The windproof and sand-resisting desert plant protection device comprises a windproof and sand-resisting protection part; the windproof and sand-resisting protection part comprises a silt inserting fixed section at the lower end and a windproof and sand-resisting section located above the silt inserting fixed section; and the windproof and sand-resisting section is fixed at the upper end of the silt inserting fixed section. The windproof and sand-resisting desert plant protection device is reasonable and compact in structure and convenient to use, has a windproof and sand-resisting effect and can weaken a sand cutting effect of wind and sand on haloxylon ammodendron seedlings; meanwhile, the protection device can be used for improving the ground surface drying degree and water retention property, and the protection device can meet surviving and growth requirements of the haloxylon ammodendron seedlings, so that the survival rate of haloxylon ammodendron can be improved; and a novel concept is provided for solving a sand cutting resisting problem of the haloxylon ammodendron seedlings in a sand-resisting and sand controlling process and the windproof and sand-resisting desert plant protection device has a very application in the sand-resisting and sand controlling field.

The invention relates to hand-wiping paper and a preparation method of the hand-wiping paper. The hand-wiping paper provided by the invention comprises a hand-wiping paper body, wherein the hand-wiping paper body comprises at least two layers of single hand-wiping paper sheets, and a single sheet adhesive layer is arranged between the single hand-wiping paper sheets. The product is obtained by carrying out pulping on the raw materials, namely bamboo fibers and water by adopting a hydropulper, carrying out pulp grinding, carrying out paper making, and carrying out forming and compounding. The stiffness of the hand-wiping paper prepared by adopting the method provided by the invention is superior to that of the commercially available hand-wiping paper, the flexibility of the hand-wiping paper provided by the invention is twice of that of the original single-layer hand-wiping paper, point-to-point double-layer compounding is adopted, the paper sheets are hollow, and the water absorbability is 2.5 times of that of the original hand-wiping paper; meanwhile, the bamboo fibers with the original color are adopted during the whole manufacturing process, the raw materials including bleached wood pulp are not needed, and thus the prepared hand-wiping paper is environmentally friendly and healthy and is friendly to the skin.

The present invention relates to a multifunctional artificial greater pelvis pros thesis. It is formed from sacral bone connection device, lumbar vertebrae connection device, greater pelvis replacement device and femur and ischium connection device. Said invention also provides the concrete structure of the said every device and their connection mode.

The invention relates to a method for measuring atmospheric pressure and height by a hand-held mobile phone. A minitype atmospheric sensor capable of measuring atmospheric pressure is embedded into an internal circuit of the mobile phone, and is driven by the power of the mobile phone; an atmospheric pressure and height processing program is loaded to a CPU of the mobile phone, the atmospheric data measured in real time is received from the atmospheric sensor, the corresponding height data is calculated, and the atmospheric pressure and height processing functions are realized through the communication between the CPU of the mobile phone and a communication interface and through the operations of the display screen and the keyboard of the mobile phone. According to the method of the invention, the functions of measuring atmospheric pressure, measuring height, displaying and alarming are added to the mobile phone. Under the control of the atmospheric pressure and height processing program, an atmospheric pressure and height displaying area is established at a specific position of the display screen of the mobile phone, and the value in the atmospheric pressure and height displaying area is updated continuously so that people can know the atmospheric pressure and height values on the side and on the spot at any place and any time.

The invention discloses a three-dimensional circuit manufacturing method. The method comprises the steps that a prototype model is generated through a selective laser sintering method, wherein modified laser sintering powder materials comprising components suitable for laser surface activation are used as the raw materials for the prototype model; preset selective scanning is carried out on the surface of the prototype model through laser, so that a surface activation area is formed; a conductive circuit is formed in the surface activation area through chemical plating. The invention further discloses the modified laser sintering powder materials used for the three-dimensional circuit manufacturing method. According to the three-dimensional circuit manufacturing method and the modified laser sintering powder materials, the limitation brought by traditional SLS processing materials on the application is overcome, meanwhile, a matrix with the complex surface is formed, and the requirements for rapid manufacturing and forming of the conductive circuit and laser activation are effectively met.

The invention discloses a curtain wall with a solar air and hot water heat collector. The curtain wall comprises a solar heat collector and a curtain wall plate which are in sequential arrangement in a direction leaving far away from the outer surface of a wall body of a building, wherein the curtain wall plate is made of light transmission materials; the solar heat collector comprises a heat absorption film and a heat absorption structure; the heat absorption film and the outer surface of the wall body of the building are defined into a sealed air circulation passage; the top of the heat absorption film is provided with a first ventilation device; a ventilation opening is formed in the upper part of the wall body of the building; an air circulation device is arranged at the ventilation opening formed in the upper part of the wall body of the building; the bottom of the wall body of the building is provided with a ventilation opening; and a second ventilation device is arranged at the ventilation opening formed in the bottom of the wall body of the building. The curtain wall has the beneficial effects that the solar air and hot water collector function is integrated in the curtain wall; the problem that the solar heat collector needs to be processed in a factory is solved; the effect of beatifying the building is achieved; the air and hot water function of a conventional solar heat collector is achieved; and the curtain wall can achieve a temperature reduction effect on the building in summer and can provide heating and fresh air preheating for the building in winter.

The invention discloses a modeling method of a power use load prediction system for a power client. The method comprises a step of grouping the power use loads of the historical days of several past years into a working day group and a non-working-day group, a step of modeling the power use loads of the working day group and a non-working day group according to the grouping result, a step of matching prediction days with the grouping result according to working days and non-working days so as to matching the model of a corresponding set to predict the prediction day load to obtain a preliminary prediction result, a step of obtaining a prediction day error correction value by using a Markov calculation prediction error transfer matrix, and a step of obtaining a final prediction result by the preliminary prediction result and the prediction day error correction value. According to the method, the prediction of the power use load is realized, a basis is provided for the investment planning of a power grid, and the working efficiency of the power grid is improved.

The embodiment of the invention is applicable to the technical field of household appliances and provides a control method and device of a sleeve type wall-hung boiler and the sleeve type wall-hung boiler. The control method comprises the steps of calculating the domestic hot water load of the sleeve type wall-hung boiler according to the water outlet temperature, the water inlet temperature and the water flow of a domestic hot water pipe; calculating the first water flow of a heating hot water pipe according to the water outlet temperature, the water return temperature and the domestic hot water load of the heating hot water pipe and the first total load of the sleeve type wall-hung boiler; and adjusting the water flow in the heating hot water pipe to be matched with the first water flow.Through the control method provided by the embodiment of the invention, the problem that a traditional sleeve type wall-hung boiler cannot supply domestic hot water and heating hot water simultaneously is solved, the requirements of users using the domestic hot water and the heating hot water simultaneously are met, and user experience is improved.

The invention discloses high-strength and high-toughness graphene composite ceramic. The high-strength and high-toughness graphene composite ceramic comprise a green body and a glaze material, whereinthe green body is prepared from ferric oxide, anorthite, potassium feldspar, attapulgite, spodumene, graphene, nanometer titanium dioxide fiber powder, silicon carbide crystal whiskers, barium sulfate and glass microbeads; and the glaze material is prepared from kaolin, graphene, nanometer titanium dioxide fiber powder, bamboo charcoal powder, silicon carbide crystal whiskers, barium sulfate, glass microbeads, potassium feldspar, quartz sand, talcum powder, olivine, bamboo charcoal powder, ferric oxide, aluminum oxide, magnesium oxide, zirconium silicate, zinc oxide and lutetium oxide. A fiber reinforcing technology is introduced, use of the graphene is combined, and the barium sulfate and the glass microbeads are compounded, so that the dispersibility of the graphene is improved; according to proper proportion, the components can exert a remarkable synergistic effect and obviously enhance the strength and the toughness of the ceramic; furthermore, the obtained ceramic material has aremarkable adsorbing and removing ability on air pollutants and has excellent corrosion resistance; and the application range is wide, and the preparation method is simple and suitable for industrialized production.

The invention discloses a coal mining area wastewater treatment recycling system, belonging to the technical field of water treatment and relating to a system for treating mine water. Shortcomings still exist in the mine water treatment recycling process, and wastewater in the mining area cannot be completely treated and recycled. The coal mining area wastewater treatment recycling system is characterized by comprising a clean mine water recycling subsystem, a high salinity mine water treatment recycling subsystem, an acidity mine water recycling subsystem, a suspended matter containing mine water recycling subsystem, a coal washing wastewater recycling subsystem and a domestic wastewater treatment recycling subsystem. The recycling subsystems are connected with each other and complement each other, so that production wastewater and domestic wastewater in the coal mining area are recycled, and the technical effect of the zero release of wastewater in the coal mining area is achieved. The coal mining area wastewater treatment recycling system is simple in structure. The construction and operating expenses of a part of facilities for wastewater treatment are reduced.

The present invention is an overhead combined intelligent three-dimensional single garage, which is an overhead three-dimensional single garage steel structure composed of guide rail profiles, columns, beams, auxiliary columns, and ceilings. The steel structure of the three-dimensional single garage is equipped with an intelligent electric control safety door unit, a lifting platform unit, Control the main unit, charging coil and AGV transport vehicle. The AGV transport vehicle is equipped with sub-control host, transport motor, transport bracket, push rod motor, wheel gripper, rechargeable battery, distance measuring module and induction coil. It is environmentally friendly and can be recycled and installed. Easy to install, convenient to operate, practical, easy to maintain, and better solve pedestrian and bicycle congestion when parking bicycles on the ground, bicycles are easy to be lost and damaged, inconvenient management, low land utilization rate, and simple mechanical storage on the second floor. Manual access may easily cause user injuries It meets the development trend and requirements of modern green and efficient urban life, and at the same time can solve the problems of public resource management caused by the fragile and easy loss of bicycles.

The invention discloses a spacecraft capsule space farm. The spacecraft capsule space farm comprises a spacecraft, a connector A, a connector B, a working capsule and a planting capsule. The spacecraft capsule space farm is characterized in that the spacecraft capsule space farm is connected and fixed to the spacecraft through the connector A and the connector B, the spacecraft capsule space farm is provided with the working capsule with large space and the planting capsule with large space after being unfolded, and a cyclic ecosphere divided into different environments and conditions for production, utilization, processing and reutilization is constructed. Compared with the prior art, a systematic and comprehensive ecological cycle system with a wide range and a large scale can support excellent environments and conditions needed by long-term survival and life of spacecraft garrison personnel and provide new products, new techniques, experience and material support for the earth and migration to other planets in future.

The invention provides a self-holding solenoid valve and relates to a solenoid valve. The self-holding solenoid valve comprises a valve body, a valve element, a sliding connecting rod and an electromagnetic coil, wherein a connecting rod slide way, a piston slide way and a valve cavity are arranged in the valve body; a fluid outlet output is arranged on a wall body of the piston slide way and a fluid inlet input is arranged on a wall body of the valve cavity; the valve element is in a hollow piston structure; a through hole is formed in the side wall of the upper part of the piston structure; an upper sealing ring and a lower sealing ring are arranged on the outer side of the middle wall body of the piston structure and on the outer side of the lower part wall body of the piston structure; an iron magnet is arranged in the upper end body of the sliding connecting rod; the sliding connecting rod is connected with the upper end of the valve element; the valve element is arranged in the piston slide way; the sliding connecting rod stretches into the connecting rod slide way; an isobaric cavity is formed by a piston slide way space above the upper sealing ring; the valve cavity is communicated with the isobaric cavity by a fluid channel and a through hole in the valve element; the electromagnetic coil is mounted at the periphery of the wall body of the connecting rod slide way. According to the self-holding solenoid valve, valve switching-on/off operation can be smoothly carried out without overcoming the pressure of fluid; a valve seat is not arranged in the valve body so that the structure of the solenoid valve is simple.

The invention relates to a standing assistance trolley with a waist supporting function. The standing assistance trolley comprises a bottom frame, a waist supporting assembly installed on the bottom frame and an upper arm support. Supporting rear wheels and universal front wheels are fixed to the bottom frame. A third supporting stand column is fixed on the bottom frame; and the upper arm supportis hinged to the third supporting stand column through a movable arm, and is driven by an electric push rod to swing. The upper arm support is provided with armpit supports and handles; when an old person stands up, the upper limbs of the old person are supported on the armpit supports, the handles are held by the hands to keep the body stable; feet are stepped on a bottom plate; two sliding frames with seat plates close towards the middle and the two seat plates are horizontal and correspondingly provide sitting support for the old person; and meanwhile, the sliding frames surround the waistof the old person, and the old person can move along with the trolley. The standing assistance trolley can assist the old people with weak mobility in standing and moving to meet the requirements of the old people for indoor and outdoor activities and physical exercises, so that the labor amount of nursing personnel or family members is reduced, and the life self-care ability and life quality of the old people are improved.

The invention discloses a main and standby equipment intelligent converter including a DC stabilized voltage supply, a state monitor, a single-chip microcomputer and an intermediate relay output control circuit. The DC stabilized voltage supply of the intelligent converter provides a stable working voltage for the intermediate relay output control circuit and a single-chip microcomputer circuit; an input terminal of the intermediate relay output control circuit is in series connection with an output interface of the single-chip microcomputer; an output terminal of the intermediate relay output control circuit is connected to an equipment switch circuit; the single-chip microcomputer obtains equipment fault trigger signals, timed trigger signals and power-off trigger signals in real time to control connection of different contacts of two intermediate relay output circuits so as to further control working state switching between main and standby equipment and realize fault switching, timed switching and power-off switching between the main and the standby equipment; phenomena that the main and the standby equipment can not be used due to fault and aging resulted from being unused for a long time are prevented; and normal and safe operation of the equipment are guaranteed.

The invention discloses a low-temperature-difference solar energy and ocean energy combined power generation system, comprising a wave energy power generation device, a solar pond, a flash evaporator, a low-temperature turbine, a first power generator, a heat-accumulation boiler, a high-temperature turbine, and a second power generator, which are connected in sequence. The low-temperature-difference solar energy and ocean energy combined power generation system further comprises a first condenser connected with the low-temperature turbine and a second condenser connected with the high-temperature turbine, wherein the first condenser and the second condenser are provided with a same condensate source. According to the low-temperature-difference solar-energy and ocean-energy combined power generation system, the heat-accumulation boiler is additionally arranged to covert surplus power generated during off-peak power consumption into high-temperature heat energy to be stored and convert high-temperature heat energy generated in a power consumption peak period into electric energy to be used, so that the requirements of a storage battery are reduced, the cost is reduced, the stabilityis enhanced, and the service life of the system is prolonged; meanwhile, the power generation system can be comprehensively utilized on the aspects of desalination, refrigeration, cultivation and thelike, and can be used for generating favorable economic benefits while meeting requirements on production, living and coast defence.