4results about How to "Increase the total length" patented technology

The present invention discloses a method for cultivating greater amberjack seedlings in an indoor cement pool, comprising the following steps: fertilized egg hatching, environmental regulation, bait and feeding methods, net-pulling training, and fish screening and pool division. The method adopts cement pool cultivation, and through water quality regulation, water flow environment regulation, and light environment regulation, selects nutritious oyster fertilized eggs instead of rotifers as the starter bait for fry, and through step-by-step net-pulling training, and cultivating seedlings of different specifications in different pools, the hatching rate of greater amberjack fertilized eggs and the survival rate of newly hatched fry are improved. The present invention also provides the use of the above method in improving the hatching rate of greater amberjack fertilized eggs, improving the weight, total length, survival rate, and yield rate of greater amberjack fry, improving the expression of genes related to muscle growth and development of greater amberjack, improving the microbial species coverage, richness, and diversity of greater amberjack intestinal flora, regulating the composition structure of greater amberjack intestinal microbial colonies, and increasing the proportion of beneficial bacteria in the flora or improving intestinal health.

The application relates to a resonance nonlinear wave making system for an artificial surfing pool and a design method thereof, and the system comprises a plurality of wave making units arranged along a preset axis of the wave making pool; any wave making unit comprises an electrical control subsystem, a variable frequency air blower, a static pressure chamber, an air chamber and a resonance subsystem; the electrical control subsystem is used for controlling the variable frequency air blower to continuously output compressed gas to the static pressure chamber and controlling the compressed gas in the static pressure chamber to be injected into the air chamber; the air chamber is surrounded by a cavity and a top surface of an oscillating water column and is used for continuously extruding the oscillating water column according to internal pressure until the water extruding time reaches a preset time; the resonance subsystem comprises a backward bend pipe which is curved towards the water surface at the tail end, is horizontal at the middle and has an adjustable length of the horizontal section, the head end of the backward bend pipe is communicated with the bottom of the cavity, the tail end is communicated with the wave making pool, is used for guiding the oscillating water column to the wave making pool to realize wave making, and is used for adjusting the guiding length of the oscillating water column by adjusting the length of the horizontal section to realize the resonance of the oscillating water column.

The application discloses a monkeypox virus whole genome capturing method, a primer group and a kit. Four groups of specific primer pools are designed for the monkeypox virus genome, and a high-fidelity enzyme system with high sustained synthesis capability is matched to carry out targeted capture on the monkeypox virus nucleic acid, so that the whole length of the monkeypox virus genome can be effectively amplified, and the application prospect is wide.

The present invention provides an optical imaging system, an imaging module, and an electronic device. The optical imaging system sequentially includes, along the optical axis from the object side to the image side: a prism; a first lens having refractive power, the object side surface of the first lens being convex near the optical axis; a second lens having refractive power; a third lens having refractive power; a fourth lens having refractive power, the image side surface of the fourth lens being convex near the optical axis; a fifth lens having refractive power; a sixth lens having refractive power; and the optical imaging system satisfies the following conditional formula: 1.7 < CT / TTL * 10 < 3, where CT is the total air gap sum on the optical axis from the image side surface of the first lens to the object side surface of the sixth lens, and TTL is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the optical imaging system. The total length of the above optical imaging system has more space, enabling the realization of the requirement of thinning, and furthermore, by reasonably distributing the refractive power, the telephoto characteristics can be achieved, obtaining good optical performance.