8results about How to "Normal development" patented technology

The invention relates to the technical field of cabbage cultivation, in particular to an open-field overwintering seed propagation method for cabbage, comprising the following steps: selecting a plot with high and dry terrain, not prone to water accumulation, good drainage and irrigation, ventilation and light transmission, and fertile soil as a seedbed; sowing after 16:30 in the afternoon, trampling the ridge before sowing, leveling the ridge surface, adding enough bottom water, and after the water has seeped through, spreading a thin layer of sieved fine soil on the ridge surface, and then evenly spreading the seeds and covering the sieved fine soil with a thickness of 0.5 cm; covering with a sunshade net after sowing, removing the sunshade net in the evening after 80% of the seedlings emerge, covering with 0.2-0.3 cm of sieved fine soil accompanied by a fungicide after all the seedlings emerge, so as to prevent and control sudden wilting; and dividing the seedlings when the seedlings have two leaves and one heart about 15 days after sowing; the beneficial effects are as follows: the open-field overwintering seed propagation method for cabbage provided by the invention ensures that the female organs develop normally, while the male organs are aborted, and the stable strain with uniform and consistent traits of pollination and reproduction offspring is maintained by the method.

The application discloses a method for artificially breeding Japanese scomber and application, and belongs to the technical field of artificial fish breeding. The method comprises the steps of parent cultivation, parent induced delivery, fertilized egg collection and hatching, and artificial breeding, 186 sexually mature Japanese scomber parent fishes are successfully cultivated, more than 300,000 fertilized eggs are obtained through natural spawning, 229,000 fry are hatched, after 20 days of cultivation, the average total length of the fry reaches 3.45 cm, the average weight is 0.33 g, the fry develops normally, and the feeding is good. The application has carried out in-depth research on the breeding habit of Japanese scomber, overcomes the problems of few Japanese scomber parent fishes, strong stress response and difficult transportation, and simultaneously masters the best induced delivery dose of artificial breeding of Japanese scomber, required water temperature and other environmental conditions, fertilized egg hatching conditions and artificial breeding technology and the like.

The utility model discloses a high temperature and high pressure oil pipe patching device belongs to the technical field of oil exploitation, including multiple high temperature and high pressure sealing mechanism and multiple high temperature and low pressure sealing mechanism, multiple high temperature and high pressure sealing mechanism between the adjacent two high temperature and high pressure sealing mechanism is equipped with the shaft sleeve, the slip sleeve is connected with the outer cylinder through several shearing nails, be equipped with the retreat prevention mechanism in the outer cylinder, and the retreat prevention mechanism is covered on the slip sleeve, the slip is located in the outer cylinder, and the upper end of slip is connected with the lower end of the reversing mechanism, and the slip is located the upside of slip sleeve. Set up multiple high temperature and high pressure sealing mechanism in the oil pipe patching device, and utilize the retreat prevention mechanism to prevent the slip sleeve from moving up relative to the outer cylinder, reduce the risk of all high temperature and high pressure sealing mechanism failure simultaneously, guarantee the oil production efficiency while guaranteeing that oil production work can develop normally, the sealing element adopts the high temperature resistant material to make, improved the high temperature resistant performance of oil pipe patching device.

The invention is suitable for the field of medical instruments, and provides tissue forceps capable of being flexibly controlled in all directions and an operation method.The tissue forceps capable of being flexibly controlled in all directions comprise a forceps head, a front rod, a locking ring, a flexible pipe, a main rod, a rotary knob mechanism, a rotating mechanism and a movement mechanism, and the special structure of the flexible pipe enables the flexible pipe to be flexibly bent in the left-right direction; the tissue forceps are convenient to adapt to different angle and position requirements in surgical operation, instrument interference is avoided, the operation flexibility is improved, and the tissue forceps can be operated more freely in a narrow surgical wound; due to the existence of the rotating mechanism, the whole instrument can freely rotate by 360 degrees in all directions, so that the forceps heads can be bent in all directions, and an extremely wide operation space and angle selection are provided for surgical operation; it is worth mentioning that the closing action of the forceps heads is pulled by the steel belt, even if the flexible pipe is in a bent state, the clamping action can still be stably and reliably completed, and the integrity and effectiveness of the functions of the tissue forceps in the operation process are guaranteed.

The invention discloses an artificial propagation method for Japanese mackerels and application, and belongs to the technical field of artificial propagation of fishes. The method comprises the steps of parent breeding, parent spawning induction, fertilized egg collection and incubation, artificial breeding and the like, 186 sexual mature Japanese mackerel parent fishes are successfully bred, more than 300 thousands of fertilized eggs are obtained through natural spawning, 22.9 thousands of larva fishes are hatched, after 20 days of breeding, the average full length of the larva fishes reaches 3.45 cm, the average weight of the larva fishes is 0.33 g, and the larva fishes are normal in development and good in ingestion. The breeding habit of the Japanese mackerel is deeply studied, the problems that the number of parent fishes of the Japanese mackerel is small, the stress response is high, and transportation is difficult are solved, and meanwhile the optimal spawning induction dosage, the required water temperature and other environmental conditions, the fertilized egg incubation condition, the artificial breeding technology and the like of artificial breeding of the Japanese mackerel are mastered.

The utility model discloses a kind of egg frame bearing mechanisms that can swing, including bearing assembly, multiple bearing assemblies are connected by multiple connecting plates with array distribution, multiple bearing assemblies are rotationally arranged on the pivot, and bearing assembly includes octagon frame, multiple supporting plates are arranged with equal intervals in octagon frame, and the top surface of both ends of supporting plate is fixedly connected with stop block, and supporting plate is provided with detachable locking assembly to limit egg frame. By placing multiple egg frames in turn on the supporting plate of the same height of adjacent octagon frame, and using locking assembly to limit the outermost egg frame, so that multiple egg frames are close to each other, multiple egg frames are limited between stop block and locking assembly, intermittent reciprocating rotation of multiple bearing assemblies is driven by the pivot, and egg frame reciprocates with bearing assembly, so that each egg is evenly turned, embryo tissue and eggshell endoderm are prevented from adhering, embryo development is normal, and hatching rate and gosling quality are improved.

The invention provides a crossbreeding method of a self-compatible line of strong-winter brassica campestris L., and belongs to the technical field of breeding. The crossbreeding method of the self-compatible line of the strong-winter brassica rapa comprises the following steps: hybridizing self-compatible brassica rapa with the strong-winter brassica rapa to obtain an F1 generation, and carrying out backcrossing for multiple times by taking the strong-winter brassica rapa as a recurrent parent until a BC1F4 generation is obtained; single plants with the affinity index larger than or equal to 6 and the relative affinity index larger than or equal to 60% are selected from the BC4F1-generation population for isolated propagation, bagging selfing is continuously conducted for three generations, and a BC4F4 generation is obtained; and selecting rape plants with the self-compatible plant rate of 100%, the affinity index of more than or equal to 6 and the relative affinity index of more than or equal to 60% in the BC4F4 generation as the strong winter brassica campestris self-compatible line. The breeding method provided by the invention provides germplasm and technology for breeding the pure line variety of the strong winter brassica campestris.

This invention discloses a starch grain development-related gene, OsESG2, and its applications. The nucleotide sequence of the gene OsESG2 provided by this invention is shown in SEQ ID NO.1 or SEQ ID NO.2. Introducing the encoding gene OsESG2 into plants with abnormal starch grain development can cultivate plants with normal starch grain development. The gene and its encoded protein can be applied to crop genetic improvement.