Abstract: Provided is an optical fiber adapter. The optical fiber adapter includes an adapter body, a shielding gate, a sleeve, and an elastic shield. One side wall of the adapter body is provided with a long groove. The shielding gate is disposed at a lower port of the adapter body. The shielding gate includes one end connected to the lower port of the adapter body and one end facing away from the lower port of the adapter body. The sleeve is sleeved on a periphery of a lower end portion of the adapter body. The elastic shield is disposed in the long groove. The elastic shield is fitted with one end portion of the shielding gate facing toward the elastic shield. The shielding gate, the sleeve, and the elastic shield form an anti-light-leakage cavity on an optical fiber access side of the optical fiber adapter.

Abstract: An apparatus for analyzing a plant specimen is disclosed which includes a housing assembly adapted to be in i) an open configuration adapted to receive a plant specimen, and ii) a closed configuration wherein ambient light is controlled therein, a light source disposed in or coupled to the housing assembly, the light source adapted to shine light onto or through the plant specimen when the housing assembly is in the closed configuration, and a camera assembly coupled to the housing assembly, the camera assembly having an image sensor adapted to receive light from the plant specimen in i) a transmittance mode where light transmits through the plant specimen, or ii) a reflectance mode where light is reflected from the plant specimen, the image sensor adapted to thereby capture hyperspectral images of the plant specimen.

Abstract: A system for realizing transformation of a thermal power unit based on combined high-parameter and low-parameter molten salts includes a high-parameter molten salt energy storage system, a low-parameter molten salt energy storage system and a thermal power unit. The high-parameter molten salt energy storage system and the low-parameter molten salt energy storage system include an electric heater for heating a molten salt, and an electric energy input end of the electric heater is connected with an electric energy output end of the thermal power unit. The low-parameter molten salt energy storage system includes a low-parameter molten salt heat absorption loop and a low-parameter molten salt heat release loop, and the high-parameter molten salt energy storage system includes a high-parameter molten salt heat absorption loop and a high-parameter molten salt heat release loop.

Abstract: The gravity compressed air energy storage system includes: a shaft, into which a pressure-bearing cylinder is movably inserted; a locking component arranged at a top of the pressure-bearing cylinder to support the pressure-bearing cylinder on a ground at a top of the shaft through the locking component in case that the pressure-bearing cylinder is at a lowest limit position; a primary gravity block arranged above the locking component; a spherical connection component arranged and spherically connected between the primary gravity block and the locking component; in which a plurality of guide components are arranged around the primary gravity block; and a plurality of guide rails arranged on the ground and at a peripheral side of the primary gravity block; in which the plurality of guide rails cooperate with the plurality of guide components.

Abstract: A portable apparatus for analyzing a plant specimen. A housing assembly defines a sensing volume and controls entry of ambient light into the sensing volume when the housing is closed. A specimen support positions a plant specimen within the sensing volume whereby light emitted from at least one light emitter is incident upon the plant specimen. An image sensor senses light from the at least one light emitter that has been incident on the plant specimen. A processor analyzes data obtained from the light sensor to assess one or more properties of the plant specimen. There may be more than one light emitter, e.g., a halogen lamp and LED array, and the apparatus may acquire images under more than one lighting condition. The apparatus may include a mechanism for moving the plant specimen relative to the optical path to take images at multiple regions of interest on the specimen.

Abstract: An apparatus for analyzing a plant specimen is disclosed which includes a housing assembly adapted to be in i) an open configuration adapted to receive a plant specimen, and ii) a closed configuration wherein ambient light is controlled therein, a light source disposed in or coupled to the housing assembly, the light source adapted to shine light onto or through the plant specimen when the housing assembly is in the closed configuration, and a camera assembly coupled to the housing assembly, the camera assembly having an image sensor adapted to receive light from the plant specimen in i) a transmittance mode where light transmits through the plant specimen, or ii) a reflectance mode where light is reflected from the plant specimen, the image sensor adapted to thereby capture hyperspectral images of the plant specimen.

Abstract: A portable apparatus for analyzing a plant specimen. A housing assembly defines a sensing volume and controls entry of ambient light into the sensing volume when the housing is closed. A specimen support positions a plant specimen within the sensing volume whereby light emitted from at least one light emitter is incident upon the plant specimen. An image sensor senses light from the at least one light emitter that has been incident on the plant specimen. A processor analyzes data obtained from the light sensor to assess one or more properties of the plant specimen. There may be more than one light emitter, e.g., a halogen lamp and LED array, and the apparatus may acquire images under more than one lighting condition. The apparatus may include a mechanism for moving the plant specimen relative to the optical path to take images at multiple regions of interest on the specimen.

Abstract: A portable apparatus for analyzing a plant specimen. A housing assembly defines a sensing volume and controls entry of ambient light into the sensing volume when the housing is closed. A specimen support positions a plant specimen within the sensing volume whereby light emitted from at least one light emitter is incident upon the plant specimen. An image sensor senses light from the at least one light emitter that has been incident on the plant specimen. A processor analyzes data obtained from the light sensor to assess one or more properties of the plant specimen. There may be more than one light emitter, e.g., a halogen lamp and LED array, and the apparatus may acquire images under more than one lighting condition. The apparatus may include a mechanism for moving the plant specimen relative to the optical path to take images at multiple regions of interest on the specimen.

Abstract: The present invention discloses a droplet digital PCR chip. The droplet digital PCR chip includes at least one chip unit, each chip unit includes a chip body formed by bonding a top piece and a bottom piece, the chip body is internally provided with an inlet chamber, a droplet storage chamber, and an injection hole. The injection hole connects with the inlet chamber, a plurality of droplet generating channels are disposed between the inlet chamber and the droplet storage chamber, a height of the droplet generating channel is smaller than a height of the droplet storage chamber, an injection fluid is injected into the inlet chamber through the injection hole, and the injection fluid is emulsified and enters the droplet storage chamber at a junction of the droplet generating channels and the droplet storage chamber.

Abstract: A distribution network risk identification system and method and a computer storage medium include: multi-source information data for risk identification is acquired; the multi-source information data is analyzed and processed to obtain a risk characteristic; a risk identification index is calculated on the basis of the risk characteristic, and a state of a power grid is determined according to the risk identification index; a temporal and spatial variation rule and variation trend of the risk characteristic are analyzed; a location and cause of occurrence of a risk are determined according to the temporal and spatial variation rule and variation trend of the risk characteristic; a severity of the risk is analyzed by adopting an analogue simulation manner; and the severity of the risk is assessed, and risk early warning information is issued on the basis of an assessment result.

Abstract: The present invention discloses a droplet digital PCR chip. The droplet digital PCR chip includes at least one chip unit, each chip unit includes a chip body formed by bonding a top piece and a bottom piece, the chip body is internally provided with an inlet chamber, a droplet storage chamber, and an injection hole. The injection hole connects with the inlet chamber, a plurality of droplet generating channels are disposed between the inlet chamber and the droplet storage chamber, a height of the droplet generating channel is smaller than a height of the droplet storage chamber, an injection fluid is injected into the inlet chamber through the injection hole, and the injection fluid is emulsified and enters the droplet storage chamber at a junction of the droplet generating channels and the droplet storage chamber.

Abstract: A distribution network risk identification system and method and a computer storage medium include: multi-source information data for risk identification is acquired; the multi-source information data is analyzed and processed to obtain a risk characteristic; a risk identification index is calculated on the basis of the risk characteristic, and a state of a power grid is determined according to the risk identification index; a temporal and spatial variation rule and variation trend of the risk characteristic are analyzed; a location and cause of occurrence of a risk are determined according to the temporal and spatial variation rule and variation trend of the risk characteristic; a severity of the risk is analyzed by adopting an analogue simulation manner; and the severity of the risk is assessed, and risk early warning information is issued on the basis of an assessment result.

Abstract: The present invention relates to a method for generating a current differential protection supernode based on an electrical topology of a regional distribution network, which belongs to the fields of automation of electrical power systems and relay protection. The present invention generates several supernode differential protection elements, i.e., differential protection objects, and backup differential protection elements by circularly using a depth-first search method according to the inputted branch-node associative data table reflecting the electrical topology of the distribution network. the present invention can accurately located and quickly isolate the faults in the distribution network system, reduce the probability of power cut in the non-fault lines, reduce the coverage of power cut, quickly reconstruct and self-heal the distribution network, and solve the effect of the distributed access system on the distribution network protection.

Abstract: The present invention relates to a centralized and networked protection system and method of regional distribution network, and belongs to the field of electrical system automation and relay protection.

Abstract: The present invention relates to a busbar differential protection method. For each bay, firstly, zero-crossing point of voltage is determined according to sample values of voltage, then the current values are re-sampled on a current fitting curve by using zero-crossing point of voltage as a synchronous signal according to a given sampling time period to get a sample sequence. The sample sequence is comprised of current values of sampling points and sample serial numbers. The sample serial numbers of sampling points at the same time are same for the sample sequence of respective interval. Finally, computing is done to sample sequences of respective intervals, and differential protection is achieved.

Abstract: The present invention relates to a busbar differential protection method. For each bay, firstly, zero-crossing point of voltage is determined according to sample values of voltage, then the current values are re-sampled on a current fitting curve by using zero-crossing point of voltage as a synchronous signal according to a given sampling time period to get a sample sequence. The sample sequence is comprised of current values of sampling points and sample serial numbers. The sample serial numbers of sampling points at the same time are same for the sample sequence of respective interval. Finally, computing is done to sample sequences of respective intervals, and differential protection is achieved.

Abstract: The present invention relates to a centralized and networked protection system and method of regional distribution network, and belongs to the field of electrical system automation and relay protection.

Abstract: The present invention relates to a method for generating a current differential protection supernode based on an electrical topology of a regional distribution network, which belongs to the fields of automation of electrical power systems and relay protection. The present invention generates several supernode differential protection elements, i.e., differential protection objects, and backup differential protection elements by circularly using a depth-first search method according to the inputted branch-node associative data table reflecting the electrical topology of the distribution network. the present invention can accurately located and quickly isolate the faults in the distribution network system, reduce the probability of power cut in the non-fault lines, reduce the coverage of power cut, quickly reconstruct and self-heal the distribution network, and solve the effect of the distributed access system on the distribution network protection.

Abstract: A method for large scale bonding carbon nanotubes on metallic electrodes is disclosed. The method includes that the wafer with a number of patterned electrodes deposited by CNTs via dielectrophoresis method is put onto the pedestal of our designed RF induction heating system. Then, the winding with alternating current induces scroll current on the surface of metallic electrodes due to skin effect. In this case, the current will generate Joule heat which could melt the surface metal of the electrodes. Finally, the CNTs will sink into the surface of the electrodes after short time heating. By varying the parameters of the RF source we can control the bonding process.