Abstract: A seed-on-paper-band packaging machine includes: a seed delivery mechanism, including a seed filling assembly and an air-suction-type seed metering device connected sequentially, a plurality of suction holes are arranged on an outer wall of the seed metering device at equal intervals along a circumferential direction thereof; a seed metering baffle is arranged on one side of the suction hole at a lowest point of the seed metering device facing the rotating direction thereof, to block seeds and reduce a speed of the seeds in a horizontal direction to zero; a paper-band releasing and collecting mechanism, a paper-band glue spraying and sealing mechanism, a seed-on band drawing mechanism and a frame.

Abstract: The present provides a device for monitoring seeding and a method thereof, comprising a monitoring sensor and an algorithm control module, wherein the monitoring sensor comprises a first sensor-channel emitting end, a first sensor-channel receiving end, a second sensor-channel emitting end and a second sensor-channel receiving end, and are arranged, in a two-channel opposite-emission photoelectric induction mode, on two sides of a seed belt, respectively; and the algorithm control module is configured to perform counting of seeding, reseeding and missed seeding, monitoring of seed deficiency and seed blockage according to a duration time of a first low level and an interval time of two adjacent falling edges of signals of the two sensor-channels; further, to perform monitoring of a rotating speed of a motor according to an interval time of two adjacent falling edges of signals of the second sensor-channel.

Abstract: A device for monitoring seeding and a method thereof, including a monitoring sensor and an algorithm control module, wherein the monitoring sensor includes a first sensor-channel emitting end, a first sensor-channel receiving end, a second sensor-channel emitting end and a second sensor-channel receiving end, and are arranged, in a two-channel opposite-emission photoelectric induction mode, on two sides of a seed belt, respectively; and the algorithm control module is configured to perform counting of seeding, reseeding and missed seeding, monitoring of seed deficiency and seed blockage according to a duration time of a first low level and an interval time of two adjacent falling edges of signals of the two sensor-channels; further, to perform monitoring of a rotating speed of a motor according to an interval time of two adjacent falling edges of signals of the second sensor-channel.

Abstract: The present disclosure provides upconversion fluorescent nanoparticles comprising: a first nanocrystal layer, a second nanocrystal layer, and an energy absorbing layer disposed between the first nanocrystal layer and the second nanocrystal layer. There is also provided an article of manufacture comprising the upconversion fluorescent nanoparticles, as well as a bio-imaging and/or bio-detection apparatus comprising the upconversion fluorescent nanoparticles. The bio-imaging and/or bio-detection apparatus may further comprise a biomolecule and a source of excitation.