187results about How to "Reduce risk of sabotage" patented technology

In a wind turbine and in a method of operating a wind turbine, the rotor speed and/or the power of the generator is reduced in response to a variable exceeding a predetermined value. Said variables belong to the group of variables consisting of wind direction and wind turbulence sensed by external sensors relative to the horizontal direction of the turbine main shaft and by one or Any other variable sensed by multiple sensors.

The invention relates to a container of consumer goods comprising an outer housing having a box and a lid hinged to the box. An inner package of consumer goods is disposed within the outer housing and has an access opening through which consumer goods can be removed. An adhesive label is provided with a resealable adhesive on a first portion of an inner surface of the adhesive label and an opposed outer surface of the adhesive label is permanently attached to an inner surface of a front wall of the lid of the outer housing. The outer surface of the adhesive label is permanently attached to the inner surface of the front wall of the lid of the outer housing such that the adhesive label is inwardly concave throughout movement of the lid between a closed position and the open position.

The invention relates to a preparation method of RG-I type lycium barbarum pectin with anti-aging activity. The method comprises the following steps: (1) water is added into lycium barbarum, and the mixture is subjected to microwave-ultrasonic assisted extraction, filtering and concentration, such that a concentrate liquid is obtained; (2) anhydrous ethanol is added into the concentrate liquid, and the materials are well mixed; the mixture is allowed to stand and is subjected to centrifugation, such that a precipitation product is obtained; (3) the precipitation product is re-dissolved, and the solution is subjected to centrifugation and drying, such that lycium barbarum polysaccharide is obtained; (4) lycium barbarum polysaccharide subjected to DEAE-cellulose column chromatography separation, and is eluted; and dialysis desalination and lyophilization are carried out, such that lycium barbarum neutral polysaccharide LBP-N and lycium barbarum acidic polysaccharide LBP-A are respectively obtained; (5) lycium barbarum acidic polysaccharide LBP-A is subjected to Sepharose CL-6B gel filtration column chromatography separation, and is eluted; dialysis desalination and lyophilization are carried out, such that lycium barbarum acidic polysaccharides LBP-A-1 and LBP-A-2 are obtained; (6) lycium barbarum acidic polysaccharide LBP-A-1 is subjected to DEAE-Sepharpse Fast Flow anion exchange column chromatography purification; continuous gradient elution is carried out with a 0-0.5 mol/L NaCl aqueous solution; and dialysis desalination and lyophilization are carried out, such that the anti-aging RG-I type lycium barbarum pectin pure product is obtained. The method provided by the invention has the advantages of simple operation and high extraction rate

The invention discloses an array substrate. The array substrate comprises a display area and a GOA (gate on array) circuit area on the outer periphery of the display area. The edge of the array substrate is provided with a static shock prevention protective area around the display area and the GOA circuit area. A first line and at least one second line are arranged in the protective area; the first line is positioned on one side close to the display area and the GOA circuit area and connected with a ground terminal; the second line is positioned on one side close to the edge of the array substrate and is in a suspended state, and the second line is connected with the first line through a capacitor. Since the grounded first line and the at least one suspended second line are arranged at the edge of the array substrate and connected through the capacitor, when reaching the array substrate, static shock first passes through the at least one second line on the outer side and is buffered through the capacitor to finally act on the first line on the inner side, damage risks of the first line can be reduced beneficially, and static protection performance of the array substrate is improved.

The invention relates to a wind machine blade airfoil profile capable of controlling flow stalling through standing vortex. An airfoil profile between a shaping starting point and an airfoil profile trailing edge point is modified, thus a concave pit is formed; the shaping starting point and the airfoil profile trailing edge point are connected through a straight line, a concave pit starting point and a concave ending point are connected by virtue of a 1/4 circular arc, and the concave ending point, a first transition point, a second transition point and the airfoil profile trailing edge point are connected through a B spline; and the airfoil profile trailing edge is provided with a Gurney wing flap. According to the invention, the amplitude of the thickness reduction of the upper surface is slowed down to delay the separation of the flow field of the upper airfoil, vortex with a fixed position is formed by the air flow at the concave pit of the upper surface, under the action of the vortex, the separation of the upper surface of the airfoil can be controlled effectively, the irregular falling of separated vortex is avoided, and vortex lifting force is formed at the upper surface of the airfoil, and the stalling of the airfoil is slowed down, so that the stalling incidence of the airfoil is improved.

The invention discloses a phase shifter with a built-in transmission rod. A PCB is clamped between two dielectric pieces, three clamping buckles of each dielectric piece are inserted into corresponding circular holes of the built-in transmission rod through micro deformation, two sides of the PCB are clamped in a rectangular groove of an empty cavity and a second rectangular groove of the built-in transmission rod, a cavity body of the phase shifter is manufactured by adopting an aluminum alloy extruded section structure, and first limiting projection parts in the cavity body of the phase shifter are used for limiting and guiding the built-in transmission rod, thereby optimizing precision of a downward inclination angle, reducing number of components, saving assembling time and reducing intermodulation hidden danger points. An insulating layer of a coaxial cable passes through a circular hole at the bottom part of a semicircular trench, an inner conductor is lapped on a PCB welding pad for welding, a welding process circular hole is formed in a cavity body wall of the phase shifter just above the PCB welding pad for welding the welding pad, and an outer conductor of the coaxial cable is directly welded on a semicircular trench in the external part of a section, thereby reducing number of components, saving assembling time, reducing the risk that welding points are damaged, and reducing intermodulation hidden danger points.

The invention discloses a high-performance low-gloss exterior wall texture coating. The high-performance low-gloss exterior wall texture coating is characterized by comprising the following components in parts by weight: 8-12 parts of water, 0.1-0.3 part of anti-mildew and anti-algae agent, 0.1-0.3 part of preservative, 0.1-0.3 part of dispersant, 0.1-0.3 part of wetting agent, 0.2-0.4 part of defoaming agent, 15-25 parts of emulsion, 7-12 parts of 325-mesh heavy calcium powder, 0.5-0.8 part of attapulgite, 0.5-3.0 parts of diatomite, 0.2-0.5 part of fly ash, 0.1-0.3 part of wood fiber, 0.15-0.25 part of cellulose, 0.4-0.7 part of film-forming additives, 0.4-1 part of anti-freezing agent, 0.05-0.15 part of multifunctional additives, 0.3-0.8 part of thickener, 1-4 parts of titanium dioxide and 50-60 parts of heavy calcium stone grains. The invention further discloses a preparation method of the high-performance low-gloss exterior wall texture coating. The exterior wall texture coating disclosed by the invention is a glossy measurable high-performance low-gloss exterior wall texture coating product, can avoid the problem of interfacing in construction of a traditional product and the problems of returning white and floating after construction and has the function of protecting a wall body in a lasting manner.

The invention belongs to the technical field of optical fiber sensing, and in particular relates to a fiber optic vector hydrophone with a posture self-correcting function. The vector hydrophone is special for a towed sonar array, and can realize the posture self-correcting in a roll direction of the vector hydrophone, so as to reach the aim that all vector hydrophone element postures in the array are automatically kept consistent. The invention specifically designs a suspension support system with a bias center of gravity, the system is fixedly connected with the vector hydrophone and can freely rotate. According to a principle of dynamics, the vector hydrophone can automatically keep a state of lowest center of gravity, so as to ensure that all elements of the array are kept in the same posture. The fiber optic vector hydrophone provided by the invention is applicable to the control on the posture of a towed vector array vector hydrophone, and also applicable to the control on the posture of a towed array posture sensor, and can ensure that the posture sensor in the towed array is kept in a horizontal state all the time, so as to improve the measuring accuracy of the posture sensor.

The invention relates to a large-scale infrared focal plane structure with thermal stress unloading capacity, which comprises a detector chip (1) and the like. The detector chip (1) is mounted on sapphire (2); one lateral surface of a first transitional substrate (31) is a plane, a ring-shaped groove is formed at the middle part of the other lateral surface of the first transitional substrate (31), and the sapphire (2) is adhered to the side of the plane of the first transitional substrate (31); one lateral surface of a second transitional substrate (32) is a plane, a ring-shaped convex structure is formed at the middle part of the other lateral surface of the second transitional substrate (32), the convex structure is abutted with the ring-shaped groove of the first transitional substrate (31) to form a cavity, and a sapphire compensation sheet (7) is mounted in the cavity and is adhered to the first transitional substrate (31); and the second transitional substrate (32) is mounted on a cold plate (4). According to the invention, by the stress unloading structure, a thermal stress and thermal deformation which are generated due to mismatching of thermal expansion coefficients of laminated materials are adsorbed, so that the thermal stress and thermal deformation of a large-scale infrared focal plane are effectively reduced, and reliability of a large-scale infrared focal plane device is improved.

The invention discloses an underground perforation test tool string optimization method based on packer stress analysis. The method comprises the steps that S1, a tubing string-shock absorber-perforating gun dynamic model is established; S2, an oscillatory differential equation of a perforated string is established; S3, an oscillatory differential equation of a shock absorber is established; S4, a tubing string-shock absorber-perforating gun coupled oscillation equation is established; and S5, a tubing string-shock absorber-perforating gun partial differential equation is solved. The method has the advantages that research about influences of the length of an oil tube and the explosive charging amount of a perforating bullet on underground tools is carried out, and the stress of a packer is increased along with increase of the length of the oil tube according to the research; the portion, prone to spiral buckling, of the oil tube is at a certain position at the bottom and in the middle of the oil tube; the tension and pressure borne by the oil tube are increased sharply along with increase of the explosive charging amount, so that the oil tube is prone to spiral buckling more easily, and theoretical guidance is provided for string design; the damage risk of a tubular column is lowered; and the underground tools are protected.

The invention discloses a method and device for measuring downhole formation fluid pressure. The device comprises ground equipment and downhole apparatus, wherein the downhole apparatus is connected with the ground equipment; the ground equipment comprises a vertical pipe, a three-way pipe is installed on the vertical pipe, a pressure sensor is installed at the position of the three-way pipe, thepressure sensor is connected with a wireless pressure sensor main machine through a data line, the wireless pressure sensor main machine is connected with a sucker antenna, the sucker antenna is in signal connection with a wireless transceiver, and the wireless transceiver is connected with a data processing meter; and the downhole apparatus comprises a thrust assembly, and a thrust module and a probe module are installed on the thrust assembly. According to the method and device for measuring the downhole formation fluid pressure, the magnitude of different thrust force is set according to different well depths, when shallow well measurement is carried out, the energy consumption of the downhole apparatus can be reduced, and meanwhile, the risk of pressure damage to the well wall due to too large thrust force is reduced; and when deep well measurement is carried out, the thrust force is reasonably increased to enable the seal between a sealing probe and a well wall mud cake to be reliable, the influence of annulus pressure on formation fluid is reduced, and thus the accuracy of the measurement is improved.

The embodiment of the invention relates to a circuit substrate, a display panel and a display device. The circuit substrate comprises a grounding protection circuit, wherein the grounding protection circuit comprises one or two parallelly-arranged first wires, a bridging portion and two parallelly-arranged second wires. The first wires, the bridging portion and the second wires are sequentially arranged along the periphery of the circuit substrate. One end of each first wire is grounded, and the other end of each first wire is electrically connected with the bridging portion. One end of each second wire is electrically connected with the bridging portion, and the other end of each second wire is grounded. The display panel comprises the circuit substrate. The display device comprises the display panel.

The invention discloses a conductive polymer-based soil deformation monitoring system and a conductive polymer-based soil deformation monitoring method. The system comprises a soil body on which conductive polymer is laid, wherein the soil body on which the conductive polymer is laid is connected with a wireless data acquisition instrument through a wire; the wireless data acquisition instrument is connected with a network through a GPRS (General Packet Radio Service) module; the network is connected with a database through a network interface; the network is connected with the database and a server; the conductive polymer-based soil deformation monitoring system is integrated in an intelligent traffic system as required; smart conductive polymer has good durability and low cost; a sensor is not required to be embedded in a material according to a self-detection technology, so that the phenomena such as reduction in strength and performance of the material caused by implantation of an external sensor are avoided; the detection is accurate and timely and the performance is stable; a soil body fracture plane can be positioned by extracting reinforcing material deformation, stress characteristic information and the like; and a theoretical basis is provided for reinforcing and repairing the soil bodies such as a roadbed.

The invention belongs to the technical field of confidential or secure communication, and discloses a heterogeneous identity alliance user trust management system based on class block chain technology. A user trust chain management module is used for managing a user trust chain; An alliance subsystem trust chain management module is used for managing a heterogeneous identity alliance subsystem. Atrust chain system introduction module is used for introducing a trust chain system, and a user trust value change module is used for changing a user trust value. A trust alarm module is used for setting an alarm threshold value for the trust value of the user, and broadcasting the alarm threshold value to each subsystem in an alliance when any subsystem finds that the trust value of the user is reduced to be equal to or less than the threshold value. According to the invention, the decentralization of the existing heterogeneous identity alliance is greatly ensured not to be damaged. Meanwhile, the apportioning cost and the trust management cost of each system in the alliance can be greatly reduced.

The invention discloses a cross-linked environment-friendly flame-retardant reinforced polyamide-based composite material and a preparation method thereof. The material comprises, by weight, 20 to 80parts of aliphatic polyamide, 10-40 parts of glass fibers, 10 to 20 parts of a flame retardant, 0.5 to 10 parts of a main cross-linking agent, 0.5 to 10 parts of an auxiliary cross-linking agent, 0.5to 10 parts of a compatilizer, 0.1 to 0.3 part of a coupling agent, 0.1 to 0.3 part of a lubricating agent and 0.1 to 0.3 part of an antioxidant. The mechanical properties and thermal properties, especially the thermal deformation temperature, of the cross-linked environment-friendly flame-retardant reinforced polyamide-based composite material prepared from the raw materials are integrally improved by 30% or above; the mechanical property and the thermal property, especially the thermal deformation temperature, are integrally improved by 15% or above, the strength of the weld line is improvedby adopting the preparation method, and the risk of damage caused by cracks in the use process of the material is reduced to a great extent.

The invention relates to an intelligent portable stamping device capable of realizing stamping supervision, which comprises a stamp lock body, a stamping table, a high-speed photographic apparatus anda controller, the stamp lock body is movably locked in a first accommodating groove and is used for locking a stamp entity; the high-speed photographic apparatus is used for shooting files and can befolded and accommodated in a second accommodating groove; the controller can be used for controlling the whole stamp equipment; when the intelligent portable stamping device is used, face recognitionis carried out preferentially, and whether a user has permission or not is judged; the safety of the stamping device is improved; control parameters are determined according to paper deviation grade,the high-speed photographic apparatus is controlled to be folded and stretched to the optimal shooting position, the problem that the shooting effect is poor due to the fact that the paper placementposition is incorrect or the high-speed photographic apparatus is not adjusted to the proper position is solved, the high-speed photographic apparatus can be automatically folded and stored after shooting is completed, and the risk that the high-speed photographic apparatus is artificially damaged is reduced. And the service life and reliability of the whole stamping machine are improved.

The invention relates to a performance controllable silicon nitride ceramic implant and a preparation method of the implant. The implant comprises silicon nitride and additives, wherein the additivescomprise a first additive, a second additive and a third additive; the first additive is one or a mixture of more than one of magnesium oxide, aluminum oxide, yttrium oxide, strontium oxide, cerium oxide, chromic oxide, titanium carbide, titanium nitride and boron nitride; the second additive is one or a mixture of more than one of erbium oxide, thulium oxide, ytterbium oxide and lutetium oxide; and the third additive is one or a mixture of more than one of praseodymium oxide, samarium oxide, cerium dioxide, neodymium sesquioxide and calcium titanate. An outer layer of the implant mainly comprises alpha phase silicon nitride; the interior of the implant mainly comprises beta phase silicon nitride, so that the implant achieves an effect of the hard surface and the tenacious interior; the hardness and wear resistance as well as fracture toughness and strength of the implant can be improved; cracks are resisted; and corresponding damage risks are reduced.