30results about How to "No security threat" patented technology

A credibility network framework based on identities belongs to the technical field of information security, which comprises three layers and three entities, wherein the three layers are a physical transmission layer, a network layer and an application program layer; and the three entities are a network access sponsor, a network access controller and a safety tactics server. The credibility network framework adopts a vector quantity encryption authentication mechanism based on the identifies of accessors, and guarantees that the requirements of all network accessors are the encryption data streams bound with accessor entities, as long as access controllers use personal identify labels and identify information of access requesting labels to obtain accurate proof test value through decrypting requesting data, bidirectional equipotent identify authentication is realized, then authority and content are evaluated and detected by access control assemblies and safety monitoring assemblies so as to guarantee that all access requirements are safe, and unsafe access requirements are refused, thereby the credibility network framework is realized.

The invention discloses a passive high-temperature heat pipe fast reactor core heat transfer system and method. The system comprises a fast reactor cooling agent pond containing sodium liquid, heat tubes and a steam evaporator. The lower ends of the heat tubes are placed in the sodium liquid of the fast reactor cooling agent pond, and the upper ends of the heat tubes are placed in water of the steam generator. A reactor fuel assembly is placed in the fast reactor cooling agent pond and immersed under the liquid surface of the sodium liquid. A sodium cooling agent and a reactor core fuel assembly are sealed, heat transfer is conducted on the steam evaporator through the heat tubes, the heat tubes can be filled with mercury, lead, bismuth, tin and other alloy which can not chemically react with water easily and serve as working media, the sodium cooling agent cannot transfer heat directly with water, and safety is greatly improved. Mercury serves as the working medium of the heat tubes, and due to the fact that the charging amount of single heat tubes is small, direct security threats are not caused even if the heat tubes leak.

The invention provides a channel self-adaptive method of a quantum key distribution system. The channel self-adaptive method comprises the following steps: at an initialization stage of the system, reducing attenuation, caused by a sending end, to signal light; increasing exit light intensity of the signal light; starting a system initialization process comprising delaying scanning and polarization feedback, so that the system initialization process is finished; after the system initialization process is finished, recovering the attenuation to the signal light to a single photon level corresponding to a default attenuation value; starting a quantum key generation process. The invention further provides a QKD (quantum key distribution) system based on the channel self-adaptive method of the quantum key distribution system. The channel self-adaptive method of the quantum key distribution system has the advantages that automatic estimation and channel attenuation compensation are carried out at the system initialization stage,, so that a method for properly increasing the signal light intensity is realized, the system initialization process can be smoothly finished, and the QKD process can be rapidly and effectively established. The method is good for networking operation of the QKD system, the working efficiency of the QKD system is improved, the operation stability and reliability are improved, and the whole performance of a QKD network is improved.

The invention discloses a method of preparing a GaAs thin-film material. The method comprises steps as follows: using Ga 203, As 203 and activated carbon C as raw materials; adding absolute ethyl alcohol corresponding to 50-100% of solid raw materials in weight; after grinding the materials uniformly, using 10-15 MPa of pressure to press the materials into a sheet with thickness of 1-10 mm; then placing the sheet in a reactor corundum crucible; vacuumizing with high-purity nitrogen; permuting the reactor corundum crucible until oxygen concentration reaches a ppm level; then using mixed gas to vacuumize and permute the reactor corundum crucible once or twice; vacuumizing to 7-13 Pa; controlling a rate of temperature increase to be within a range of 5-10 DEG C per minute; heating a reaction zone until the temperature of the reaction zone rises to a range of 1200-1250 DEG C; heating a sediment zone until the temperature of the sediment zone rises to a range of 600-800 DEG C; keeping the temperature constant for 3-4 hours when vacuum degree is kept no less than minus 0.08 MPa; cooling naturally until the temperature drops to the room temperature after the temperature of the reaction zone reaches a predetermined temperature; and obtaining a grey black GaAs thin film after filling the reactor corundum crucible with the mixed gas. According to the method of preparing the GaAs thin-film material, used raw materials are simple, low in price, and easy to obtain, and the raw materials are either solid or non-toxic gas, are free from polluting the environment, and do not threat the safety of an operator.

The invention relates to a walking type scoliosis traction device. A traction support is composed of a hand guided walking support, an adjustable supporting frame and a spring type gravity traction device. The hand guided walking support is composed of front wheels, rear wheels, rear protection wheels, a front wheel rod, a rear wheel rod, a bottom U-shaped rod, an upper U-shaped rod, a screwing type height adjusting rod and a handle. The adjustable supporting frame is composed of a bottom rod, an upper rod, a height adjusting nut, a ferrule, a top bent rod and a front fork. According to the device, a dragged person can also be subjected to traction treatment in an upright walking state, so that the large living freedom degree is kept, weights, sandbags and other heavy objects are not needed in the traction process, self gravity is used as traction force, the equilateral three-fork type high-precision spring combination enables the traction force to be flexible and stable, and a pulleyblock and a traction rope are convenient for a patient to self-adjust and remove the traction force, so that the simplicity, convenience and safety of traction operation are greatly improved.

A facility vegetable cryoprotective agent is composed of glucose, choline chloride, naphthylacetic acid, chlormequat chloride, alcohol and water. The invention relates to a facility vegetable cryoprotective agent prepared by taking glucose, choline chloride, naphthylacetic acid and chlormequat chloride as active ingredients and has the characteristics of less components, low production cost and good freeze-proofing effect. Through field test, influence of low temperature of minus 3 to 5 DEG C can be effectively prevented. The invention has simple preparation, convenient use, labour and time saving and obvious effect, raw material components are not only cryoprotective agent but also vegetable nutrient substances, and the cryoprotective agent has no toxic hard on vegetables or safety threat on human body, thus being applicable to facility vegetable production in northern China.

The invention relates to a double-main-duct ultra-light type vertical take-off and landing solo aircraft which comprises a cabin main body and main ducts symmetrically arranged at the upper parts of the left side and the right side of the cabin main body, wherein the lower part of the cabin main body is provided with an undercarriage; each main duct is internally provided with a screw propeller, and an engine drives and rotates the screw propeller through a centrifugal speed reducer; and the engine is arranged at the lower part of the axis inside each main duct, and a nozzle of each main duct is further provided with a flow guide plate. Due to the use of the double-main duct aircraft provided by the invention,, the net weight of the aircraft is less than 116 kilograms, the height and the length of the aircraft are less than 1.9m, and the volume of the aircraft is equal to be about a half of the weight of a common car, so that the requirement on take-off and landing site is extremely simple, the aircraft is suitable for take-off and landing in the crowed cities, and the aircraft can be conveniently controlled.

The invention discloses an induction coil cooling pressure-bearing system for induction heating equipment, comprising a pressure vessel and a heating induction coil. The heating induction coil penetrates through the pressure vessel, and comprises an inner coil section located in the pressure vessel and an outer coil section located outside the pressure vessel. The outer coil section comprises an exhaust coil section and an intake coil section. A cooling medium is arranged in the heating induction coil, and the cooling medium is a gas which is the same with or similar to the pressurized gas ofthe pressure vessel. The induction coil cooling pressure-bearing system for induction heating equipment further comprises a first air pressure detection pipeline connected with the exhaust coil section and a second air pressure detection pipeline connected with the pressure vessel, and the first air pressure detection pipeline is connected with the second air pressure detection pipeline through adifferential pressure gauge. The induction coil cooling pressure-bearing system for induction heating equipment is disclosed in order to solve the technical problem that the induction heating in the prior art can be hardly applied to high-pressure and ultrahigh-pressure equipment and is of poor safety.

The invention discloses a box used for containing cutters on a construction site. The box comprises a box body; the box body mainly comprises a peripheral body, a supporting body and a cavity, wherein a layer of flexible glue is arranged inside the cavity. The box used for containing the cutters on the construction site has the advantages that the box enables the cutters to be stored conveniently and be in a state relatively safe to people; the layer of flexible glue is arranged in the cavity, and therefore the sharpness of the cutters can be effectively protected against damage; the box is easy to manufacture and convenient to use.

The invention discloses a potato greening inhibitor and a preparation method. The potato greening inhibitor comprises raw materials in parts by weight as follows: 20-40 parts of guar gum, 1-2.5 parts of norflurazon and 10,000 parts of clear water. The preparation method of the potato greening inhibitor comprises steps as follows: 1-2.5 parts of the norflurazon are dissolved in 10,000 parts of clear water and stirred uniformly, and then 20-40 parts of the guar gum are added and stirred uniformly. The application method of the potato greening inhibitor comprises steps as follows: the potato greening inhibitor is sprayed once after harvesting and before storage of potatoes, and the dosage standard is that the surfaces of the potatoes are wet through spraying. The potato greening inhibitor is simple to prepare and convenient to use, saves time and labor, has low cost and can completely inhibit the potatoes exposed to light from greening, and components of the raw materials do not have toxic effects on the potatoes and do not threaten the safety of a human body.

The invention discloses a method and equipment for preparing hypochlorous acid by combining gas-liquid synthesis with an ion exchange method, and the preparation method comprises the following steps:S1, treating tap water by adopting a pre-filter to obtain purified water; S2, adding a hypochlorite solution and the purified water in the step S1 into a hypochlorite solution diluting device to obtain a hypochlorite diluted solution; S3, adding the hypochlorite solution obtained in the step S2 into a mixer, and conveying carbon dioxide gas into the mixer through a pipeline for mixing reaction toobtain a hypochlorous acid mixed solution with the concentration of 10ppm to 5000 ppm and the pH value of 4.0-8.0; and S4, carrying out ion exchange on the hypochlorous acid mixed solution obtained inthe step S3 through an ion exchanger to remove heavy metal ions so as to obtain a slightly acidic hypochlorous acid product with the pH value of 4.0-6.8. The product disclosed by the invention is stable in performance, good in sterilization and disinfection effects, long in preservation time, non-toxic and odorless.

The invention belongs to the technical field of traction devices, and discloses an adjustable scoliosis traction device. The adjustable scoliosis traction device comprises a walking module, a fixing module, an armrest module, a traction module, a height adjusting module, a tightness adjusting module, an audio acquisition module, a tensile force detection module, a signal transmission module, a display module and a control module, wherein acquired audio information can be processed and recognized through an external controller, detected junk information is processed, and through processing results and preset parameters, the height of armrest frames and tensile force of a traction rope are adjusted and controlled. By means of the adjustable scoliosis traction device, traction force can be intelligently adjusted through the tightness adjusting module, the adjustment speed is high, the traction force can be adjusted modestly, in the premise of guaranteeing a traction effect, comfort of a patient is improved, the height and the tensile force can be remotely adjusted through the control module, and the audio acquisition module can be in cooperation with the control module, so that audiocontrol of the traction device is achieved.

The invention discloses a method for preparing hypochlorous acid by combining gas-liquid synthesis with an electrolytic method, which is characterized by comprising the following steps: S1, treating tap water by using a pre-filter to obtain purified water; S2, adding ahypochlorite solution and purified water in the step S1 into a hypochlorite solution diluter to obtain a hypochlorite diluted solution; S3, adding the hypochlorite solution obtained in the step S2 into a mixer, and conveying carbon dioxide gas into the mixer through a pipeline for mixing reaction to obtain a hypochlorous acid mixed solution with the concentration of 10 ppm and the pH value of 4.0-8.0; and S4, electrolyzing the hypochlorous acid mixed solution obtained in the step S3 through an electrolysis device (4) to convert chloride ions in the solution into hypochlorous acid molecules, reducing the content of the chloride ions in the solution, and removing heavy metal ions to obtain a hypochlorous acid product. The product disclosed by the invention is stable in performance, good in sterilization and disinfection effects, long in preservation time, non-toxic and odorless.

The invention discloses a device and a method for measuring a collision process in laser shock high-speed forming of a plate, and belongs to the technical field of measurement. The device comprises alaser forming system and a measuring system, wherein the laser forming system comprises optical glass, a laser, an absorption layer, a metal sheet, a metal round bar, a barrier film, insulating paperand a female die. The method comprises the following steps of: firstly, enabling a metal die not to be in direct contact with the metal sheet and the metal round bar by adopting the insulating paper and the barrier film; correspondingly connecting the metal sheet and the metal round bar with a positive electrode and a negative electrode of a power supply; enabling the metal sheet to be in contactwith the metal round bar after being subjected to laser shock deformation; and conducting a measuring loop, wherein the number of generated voltage pulse signals is the collision frequency of the metal sheet moving at a high speed and the metal die, and the width of voltage pulses is the collision contact time. According to the method and the device, the collision process in laser shock high-speedforming of the plate can be accurately measured. The device has potential market application prospects.