47results about How to "The method is safe and efficient" patented technology

The invention relates to the technical field of animal product processing and in particular relates to preserved meat and a pickling method of the preserved meat. The preserved meat is obtained by pickling pork by using edible salt, white spirit, peppers, anises, cloves, tea, white sugar and nitrate. The pickling method comprises the steps of (1) pretreatment; (2) immersing;(3) salt frying and pickling; (4) air-drying; (5) fumigation-drying; (6) cooling; and (7) package. According to the preserved meat and the pickling method of the preserved meat, the using amount of pickling ingredients is small, so that the conventional flavor and the color of the preserved meat are guaranteed; the preserved meat is brown, transparent and shiny, is the same in reality as in appearance and smells delicious; the good smell can be kept for a long time; the preserved meat is tender and fat but not greasy; furthermore, the pickling flavor is strong; lean is kermesinus, and fat is milk white; meanwhile, the salt content is only 1.6-2 percent; people do not feel seriously thirsty after eating the preserved meat. The preserved meat is immersed in boiled tea water, so that the meat has natural, fresh, cool and pleasant tea flavor; fumigation is executed by combusting tea tree branches, so that the natural tea fragrance of the preserved meat is enhanced.

The invention discloses a portable photo-thermal seawater desalination hollow fiber membrane, a preparation method, a device and application. The preparation method comprises the following steps: 1) dispersing and dissolving a hydrophilic polymer and nano-particles in a buffer solution with the pH value of 8.5 to prepare a uniform solution, circularly washing the hollow fiber membrane with the uniform solution for 1-24 hours, and conducting cleaning and drying for later use to prepare the hollow fiber membrane with the super-hydrophilic inner surface, wherein the ratio of the hydrophilic polymer to the nano-particles is (1-20):(0-20); and (2) putting the hollow fiber membrane with the super-hydrophilic inner surface obtained in the step (1) in 0.1-20wt% photo-thermal modified material solution atmosphere, and conducting treating for 1-24 hours in manners of surface adsorption, surface vapor deposition, surface cross-linking fixation, suction filtration and/or coating modification, so as to prepare the hollow fiber membrane with the super-hydrophilic inner surface and the photo-thermal outer surface. The three-dimensional hollow fiber membrane is selected as a base material, and the photo-thermal seawater desalination hollow fiber membrane obtained through inner/outer surface modification can realize photo-thermal seawater desalination.

The invention discloses a treatment process of acid-containing wastewater. Organic matter and bromine in wastewater are removed through two steps of resin adsorption, and clean concentrated sulfuric acid with concentration of about 50% and condensate water basically containing no impurities are obtained after obtained output water is distilled through a film. The process is simple in procedure, mild in reaction condition, easy to operate, remarkable in effect and good in economic benefit.

The invention discloses a one-step preparation method for white light-emitting carbon dots, and relates to the field of luminescent nanomaterials. The white light-emitting carbon dots are prepared byusing the following method: in a constant temperature oven, dissolving o-phenylenediamine and catechol at different ratios in an alcohol solvent which includes methanol, ethanol, propyl alcohol, butylalcohol, pentanol and other alcohol, packaging the mixture into a reaction kettle, controlling the temperature of the oven at 140-240 DEG C, and performing a solvothermal reaction for 4-48 hours so as to obtain fluorescent carbon dots with luminescent peaks covering 400-700 nm, wherein the obtained fluorescent carbon dots includes the white light-emitting carbon dots which have CIE chromaticity coordinates of (0.33, 0.33). The white light-emitting carbon dots prepared by using the method has excellent optical properties, a simple preparation method, easily available materials and low cost, and can be directly added to epoxy resin as an encapsulating material of diodes so as to prepare a white light LED device.

The invention relates to a distributed multi-authorization-party ciphertext policy attribute-based encryption method for medium confusion, which is characterized in that when a new attribute authorization center is added into a system, the new attribute authorization center is secretly distributed with a pseudorandom function PRF (.). In order to prevent collusion of users who possess all relevantattributes in a certain relevant attribute management domain, a trusted medium (MDR) is employed in this system. A data owner generates a ciphertext CT including a obfuscation function. Because the secure DO is used, online interaction does not need to be maintained. Similarly, the DO transmits a key to the MDR, where the key is a function variable for receiving a key skU obtained by the user U from the MDR. The skU is calculated from a PRF (.), a GidU of U, or the like. U has the ability to calculate a function, but does not reveal the internal program secret. Wherein I represents a set of AAs serial numbers of an attribute authorization center for managing U attributes, if the identity IDU of U is confirmed, a corresponding private key USKj is issued to the user U, and the MDR sends a private key skU to the user U. And finally, the U decrypts the ciphertext CT by using USKj (j belongs to I).

The invention relates to an obstacle recognition and avoidance method. The method comprises: a motor unit works according to first motor torque control information; an electric power steering unit works according to first corner control information; a central processing unit analyzes environmental information to determine whether the environmental information includes first obstacle information orsecond obstacle information; when the first obstacle information is included by the environmental information, the motor unit works according to second motor torque control information and then worksaccording to the first motor torque control information, and the electric power steering unit works according to second corner control information and then works according to the first corner controlinformation; and when environmental information includes the second obstacle information, the motor unit works according to third motor torque control information and then works according to the first motor torque control information, and the electric power steering unit works according to the third corner control information and then works according to the first corner control information.

The invention discloses a disease prevention method of increasing the content of phenolic substance in strawberry fruit, and belongs to the technical field of crop cultivation. The method comprises the steps that the strawberry plants are UV-C irradiation treated once every 2-4 days beginning from the flowering period and continuing until the fruiting period; the conditions for the UV-C irradiation treatment are the following: the irradiation dosage amount is less than 0.75 kJ/m2, the irradiation time is less than 70 s; after the UV-C irradiation treatment is completed, the strawberry plants need to be shaded from light for larger than or equal to 8 hours. According to the disease prevention method, the strawberry plants are regularly UV-C irradiated in the flowering and fruiting period, the contents of anthocyanin and flavonol and other phenolic substances in strawberry fruits are significantly increased, meanwhile the antioxidant ability of the fruits is increased; the low dosage UV-C irradiation combined with light shading treatment method is utilized, physiological metabolisms related to the course of disease of the strawberry plants are induced, the anti-disease ability of the strawberry plant per se is effectively increased, and the incidence rate of the natural diseases of the strawberries is significantly decreased.

The invention provides a hatching method of black bottom soft-shell turtle eggs and relates to the technical field of aquaculture. The hatching method comprises the following steps: (1) a black bottomsoft-shell turtle egg preparation stage; (2) a hatching stage; (3) a phase after hatching. By adopting the hatching method of the black bottom soft-shell turtle eggs, provided by the invention, eachstage of hatching is scientifically and finely treated; the black bottom soft-shell turtle eggs hatched by the method provided by the invention have high hatching rate and short hatching time; the resistance of newly born young black bottom soft-shell turtles is strong and the morbidity is low; the method is safe and efficient, is suitable for large-scale hatching and is worthy of being popularized.

The invention relates to a construction method for a stable top plate-coal pillar structure along an empty coal roadway through fully-mechanized caving. The stable top plate-coal pillar structure comprises a tensile anchor cable, a circular truncated cone type baffle disc, a Z-shaped locking tray, a special-shaped quadrilateral tray, a groove cap, a mounting rod, an expanding agent and a hole sealing agent, wherein expanding and fracturing boreholes are formed in a top plate, near a non-stoping roadside, of a mining roadway, slits are cut on the two sides of the boreholes, the tensile anchor cable, the expanding gent, the hole sealing agent and the circular truncated cone type baffle disc are installed in the boreholes, thick top coal is cut on the non-stoping roadside, a locking anchor cable and the Z-shaped locking tray are installed after the slits, and after the fracturing boreholes enter a goaf, the tensile stress on the upper side of a base top at the side region of a working face is remarkably increased, the expansion force of the expanding agent enables a basic top to substantially break along the fracturing boreholes, roadway driving along the goaf is carried out on an adjacent side coal body, a coal pillar side shoulder socket stabilizing anchor is installed on the adjacent side coal body, and the roadway top plate and a coal pillar are located under the protection ofa stable structure of a base top cantilever beam, so that the top plate-coal pillar structure along the empty coal roadway through fully-mechanized caving is constructed, and the method has importantand wide application value.

The invention belongs to the field of enzyme activity inhibition and in particular relates to a method for lowering the activity of autolytic enzymes of sea cucumbers by ultrasonic-assisted electrolyzed water. The method comprises the following steps: preprocessing, performing ultrasonic-sub-acidic electrolyzed water treatment, performing secondary impurity removal, and packaging for storing or subsequently processing. The purposes of changing the internal pH value of the sea cucumbers and lowering the activity of the autolytic enzymes of body walls and intestinal tracts of the sea cucumbers are achieved through the ultrasonic-assisted sub-acidic electrolyzed water treatment. The method has the advantages that the sterilization effect is remarkable, the dissolving-out quantity of TCA-soluble oligopeptide, total sugar and reducing sugar is low, and the enzyme activity survival rate of the autolytic enzymes is lower than 15%.

The invention discloses a wind-resistant locking device for a final closure of steel truss beams erected by hole and an method. The wind-resistant locking device is used for temporarily locking an erected A span steel truss beam and a B span steel truss beam to be erected and comprises two telescopic arms, a rear cross beam and two pushing mechanisms, wherein the two telescopic arms are respectively arranged on the two sides of a diagonal member of the A span steel truss beam along a transverse direction of bridge, and each telescopic arm comprises an outer sleeve, an inner sleeve and a driving mechanism; the outer sleeve is arranged on an A span lower chord member of the A span steel truss beam, and the inner sleeve is partly positioned in the outer sleeve; the driving mechanism is arranged in the outer sleeve, is connected with the inner sleeve and is used for driving the inner sleeve to move along a longitudinal direction of bridge; the rear cross beam is connected with the two outer sleeves; a containing area used for containing a B span lower chord member of the B span steel truss beam is formed between the inner sleeves of the two telescopic arms; and one ends of the two pushing mechanisms are respectively fixed onto the two inner sleeves and are positioned outside the outer sleeves, and the other ends of the two pushing mechanisms can extend or retract towards the containing area along the transverse direction of bridge. The wind-resistant locking device can improve the overall wind resistance during erection of the steel truss beams.

The invention discloses a verification code short message verification method and device, and relates to the technical field of communication, and the method comprises the steps: receiving a verification code short message transmitted by a server; analyzing the verification code short message to obtain an application identification code and verification code information in the verification code short message; and querying a terminal application corresponding to the application identification code according to the application identification code, and sending the verification code information to the terminal application, so that the terminal application performs user identity verification by using the verification code information.

The invention provides a graphene enhanced photo-thermal evaporation membrane, a membrane assembly and a sewage concentration treatment device. The graphene enhanced photo-thermal evaporation film is a hollow fiber film, graphene of a two-dimensional sheet structure is evenly distributed on the inner surface, the outer surface and the section of the photo-thermal evaporation film, the photo-thermal evaporation film is of a gradient ordered pore structure, the pore diameter of the photo-thermal evaporation film is decreased from the inner surface to the outer surface, and the average pore diameter of the photo-thermal evaporation film is less than 30 nm. Graphene with high strength, excellent hydrophobic property, photothermal conversion and heat-conducting property is used as a raw material, preparation of a photothermal modified material is realized through a one-step method, and a sewage concentration treatment device with high specific surface area and efficient photothermal conversion is designed, so that efficient solar energy driven photothermal evaporation concentration is realized.