135results about How to "Easily damaged" patented technology

The invention discloses a TBC battery structure, a preparation method thereof and a TBC battery, in the structure, a P region and an N region are respectively provided with a P-type / N-type doped polycrystalline silicon passivation layer, and an oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region. The preparation method comprises the step of preparing the P-type / N-type doped polycrystalline silicon passivation layer and the oxygen-doped polycrystalline silicon layer on the P region and the N region. In the structure, the oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region, so that the P region and the N region can be effectively separated, an excellent shadow shielding resisting function of a corresponding assembly can be realized, and the generating capacity of the assembly in a shadow shielding environment can be further improved. According to the preparation method, the design of depositing multiple tunneling oxide layers and polycrystalline silicon layers at a time, the design of a laminated mask, a new isolation mode, an efficient cleaning process and the like are adopted, the problems that an existing TBC battery preparation process is tedious, boron-doped polycrystalline silicon laser ablation residues exist, the investment and generation cost is high and the like are effectively solved, and the preparation method is a brand-new TBC battery route.

This invention discloses a device and method for sewing curved sheets with varying diameters on a flat knitting machine, belonging to the field of textile machinery technology. The device includes a curling mechanism and a sewing mechanism; the curling mechanism includes a variable-diameter cylindrical device and a matching holding mechanism. The variable-diameter cylindrical device includes an inner cylinder and an outer cylinder, which expand or contract synchronously via corresponding telescopic connecting rods and a central spindle. The holding mechanism is controlled by an electromagnet, achieving precise holding of the curved sheet by switching the magnetic pole direction. Through the curling and sewing mechanisms, this device expands the fan-shaped curved sheet from a two-dimensional to a three-dimensional structure during rotation, while simultaneously achieving automatic edge sewing of the curved sheet. The inner cylinder can move axially relative to the outer cylinder, allowing the sewn curved sheet to automatically detach from the outer cylinder. This invention simultaneously achieves gripping, curling, expansion, alignment, and demolding, and is suitable for sewing curved sheets with varying diameters on both sides.

This invention belongs to the field of traditional Chinese medicine technology, and provides a traditional Chinese medicine composition with the effects of clearing the throat and relieving cough, and its preparation method. The traditional Chinese medicine composition contains the following components: Scrophularia ningpoensis, Ophiopogon japonicus, Platycodon grandiflorus, Terminalia chebula, Mentha haplocalyx, Paeonia lactiflora, Glycyrrhiza uralensis, Borneol, and rice wine. This traditional Chinese medicine composition nourishes Yin and moistens dryness, cools the blood and reduces swelling, clears the throat and relieves cough, and can effectively improve symptoms such as sore throat, foreign body sensation in the throat, hoarseness, dry and itchy throat, and irritating dry cough caused by endotracheal intubation or gastric tube placement. This traditional Chinese medicine composition has definite efficacy, high safety, and few side effects, and has excellent clinical application and industrialization prospects.

The utility model discloses a filter element for a motorcycle air filter, which belongs to the field of motorcycle air filters and comprises a first filter component and a second filter component, the first filter component comprises a mounting shell, a mounting groove is arranged on the surface of the mounting shell, and a first filter screen is arranged in the mounting groove. The second filter assembly comprises a first frame body and a second frame body which are mounted on the surface of the mounting shell, filter cotton is mounted in the first frame body and the second frame body, filter paper is arranged on one side of the filter cotton, and a second filter screen is arranged on one side of the filter paper; according to the air filter element structure, the first filter assembly is matched with the second filter assembly, so that the air filter has multiple filtering operations on air, the practicability of the filter element structure is remarkably enhanced, meanwhile, all parts are convenient to disassemble and assemble through mutual matching of the structures, and the disassembly and assembly use convenience of the filter element can be improved.

The invention discloses a micromotor-driven distributed turbulent flow pumpless liquid cooling device for space thermal control. The micromotor-driven distributed turbulent flow pumpless liquid cooling device comprises a pipeline body and an impeller pump, the impeller pump comprises an impeller with the outer diameter being D and capable of actively rotating. When the impeller pump is used for overall heat dissipation of a single small-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of the small-size electronic element; when the impeller pump is used for eliminating the hot spots of the large-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of each hot spot to be eliminated. An external pump is removed, and the impeller pump is arranged in the cooling flow channel, so that on one hand, a cooling working medium is pumped, on the other hand, a turbulent flow effect is achieved on the cooling working medium, a boundary layer is broken, and the heat dissipation effect is improved. In addition, for a large-scale heat dissipation scene, a plurality of impeller pumps can be arranged in the cooling flow channel in an array mode, the impeller pumps can be placed at local hot spots in a targeted mode, targeted heat dissipation is achieved, and the heat dissipation efficiency and uniformity are further improved.

The application provides a steam delivery pipeline leakage detection system, which comprises a metal conducting rod fixedly connected to the outer wall of a steam delivery pipeline, a sensor connected to the metal conducting rod, a signal analyzer electrically connected to the sensor, and a DCS control center electrically connected to the signal analyzer, and the sensor is used for collecting the vibration sound signal of the metal conducting rod. The steam delivery pipeline leakage detection system of the application can accurately and timely determine the leakage and the position of the leakage point by using the metal conducting rod connected to the steam delivery pipeline to transmit the vibration sound generated by the intense friction between the leakage medium and the pipeline wall, and the sound signal is not obviously attenuated in the transmission process due to the solid medium transmission, the transmission distance is long, and the sound signal is not easily interfered by other signals, the false positive rate of the leakage detection is effectively reduced, the operation and maintenance cost of the steam delivery pipeline is significantly reduced, and the industrial safety is improved.

The utility model discloses an electric servo control universal testing machine which comprises a base, a pressure detection table is arranged in the base, a supporting plate is arranged in the side direction of the base, and supporting frames are arranged at the two ends of the supporting plate. A downward pressing push plate is arranged on the inner side wall of the supporting plate, a first sliding rail and a second sliding rail are arranged on the side wall of the supporting frame from inside to outside, a first protection frame is arranged on the first sliding rail in a sliding mode, and a second protection frame is arranged on the second sliding rail in a sliding mode; the first protection frame and the second protection frame are arranged, and the sliding stroke of the second protection frame is higher than that of the first protection frame, so that scrap splashing caused by material crushing in the test process is effectively prevented. By means of the double-layer protection design, the risk of injury to surrounding equipment and workers can be greatly reduced, and the safety of the test process is improved. Splashed chippings have large kinetic energy and are prone to damaging a testing machine and other peripheral equipment.

The utility model relates to the technical field of wire wrapping machines, and discloses a paper-covered copper wire wrapping machine, which comprises a wrapping machine, the top surface of the wrapping machine is fixedly connected with a dustproof cover, and the bottom edge of the front surface of the dustproof cover is fixedly connected with a dustproof mechanism. According to the paper-covered copper wire wrapping machine, through the arrangement of the dustproof mechanism, when the paper-covered copper wire wrapping machine needs to be used, a moving window is pushed into deep grooves in the two sides in a sliding rail through pushing and pulling of a handle, the opening area is increased, after an internal copper wire is installed, the moving window is pulled out and folded, and then an internal machine can be isolated from the outside; the movable window is made of glass, so that the internal winding condition can be observed through the movable window, the effect of conveniently preventing dust from entering the device is achieved, and the problems that the dust settles on a paper-covered copper wire which is being wrapped, the uniformity and integrity of an insulating layer are damaged, the insulating performance is reduced, partial discharge is caused and the like are solved; the service life of equipment is shortened and potential safety hazards are increased.

The utility model provides a kind of weighing device for railway bridge, it is related to railway bridge technical field, the weighing device for railway bridge includes mounting seat, weighing assembly, weighing platform and carrier, the mounting cavity of upwards opening is opened in the mounting seat, the weighing assembly includes the weighing sensor of the bottom surface of the mounting cavity, the weighing platform is located the opening of the mounting cavity above, the lower end of the weighing platform is connected with the weighing sensor by the carrier, and the upper end of the weighing platform is used to connect track plate. The utility model can improve the safety of railway bridge.

A ceramic chopper hole size automatic classifying and screening device belongs to the technical field of chopper production equipment and comprises a conveying device which is provided with an imaging part and a sorting part. An imaging device for shooting the size of the ceramic chopper hole is arranged on the side of the imaging part; the qualified product collecting boxes are arranged on one side of the sorting part at intervals in a staggered mode in the discharging direction of the sorting part; the discharging air guns are arranged on the other side of the sorting part and correspond to the collecting boxes; the data analysis processor is located behind the image device and electrically connected with the image device, the conveying device and the discharging air gun. And the control device is used for controlling the corresponding discharging air gun to blow the ceramic chopper into the corresponding collecting box according to image information output by the image device. According to the chopper sorting device, a blowing mode is adopted for chopper sorting, and the damage rate of the choppers is greatly reduced.

The utility model discloses a raw coal crushing device, including;Box body;The mounting bracket of symmetrical setting in the box body;The breaker board of linear array in the side wall of mounting bracket, is provided with the cavity in the breaker board, the spray head of linear array in the top of breaker board. The raw coal crushing device provided by the utility model, through the drive sliding frame drive fixed plate reciprocating movement, make fixed plate and two adjacent breaker board between each other cooperate and carry out the crushing of raw coal, make fixed plate and breaker board can break raw coal into powder, in the process that breaker board carries out the crushing of raw coal, through the spray head of breaker board top installation and spray out the water mist to the raw coal crushing area and cover, make the dust of raw coal crushing process can be fast dust fall, not only avoid the dust floating to the air and cause environmental pollution and human body damage, also reduce the waste of water resources in the dust fall process, avoid the danger of dust explosion simultaneously.

The utility model relates to a kind of multistage mixing extrusion device for foamed material, especially in the technical field of mixing processing equipment.It includes mixing box, feeding rod, helical blade, rotating motor, water tank, water pipe, discharge pipe, connecting piece, anti-blocking mechanism.The problem that the existing extrusion screw is easily damaged due to heating caused by long time high-speed rotation is overcome, and the current foamed material is easily blocked in the process of extrusion.

The utility model relates to the field of living beef cattle egg collection, and discloses a living cattle egg collection fixing frame which comprises a top frame and a bottom frame which are arranged in parallel, the top frame and the bottom frame are both of a hollow structure, a plurality of side pipes are fixedly connected to the two sides of the bottom end of the top frame and the two sides of the top end of the bottom frame respectively, and rotating rods are rotationally installed on the front sides of the top frame and the bottom frame respectively. The top ends and the bottom ends of the sides, close to each other, of the two rotating rods are fixedly connected with transverse rods correspondingly, a plurality of vertical pipes are arranged between the two transverse rods arranged in parallel in the vertical direction in parallel, a plurality of mounting bases are fixedly connected to the top end of one side of the top frame, and one side of each mounting base is rotationally connected with a connecting bent arm through a rotating shaft. Inclined plug pins distributed in the vertical direction are fixedly installed at the positions, close to the centers of the two rotating rods, of the connecting bent arms, plug bushes matched with the inclined plug pins in an inserted mode are fixedly installed on the outer side and the inner side of the top frame correspondingly, and adjusting assemblies are movably installed on the inner sides of the ends, close to each other, of the top frame and the bottom frame. By means of the structure, the cattle can be conveniently fixed in the process of collecting the eggs of the living cattle.

The invention relates to the technical field of aging tests, and discloses a test device and method for accelerating material aging through multi-environmental factor coupling, and the test device for accelerating material aging through multi-environmental factor coupling comprises a test box body which is used for providing an aging degree test environment; the illumination system is mounted in the test box body and is used for providing irradiation for the test box body; the salt mist system is connected to one side of the test box body through a pipeline and is used for spraying salt mist into the test box body; and the gas mixing system is connected to one side of the test box body through a pipeline and is used for guiding various gases into the test box body. By adopting the multi-factor coupling material aging system, the combined action of multiple factors in a service environment is simulated, the process of a multi-factor coupling aging test is accelerated, the test steps are simplified, the test period is greatly shortened, the manual labor is reduced, and the system closely combines a salt fog factor with other environmental factors.

The utility model relates to metal sheet processing equipment field, concretely is a kind of wire harness automatic connecting device based on uncoiling line swing shear die. Including swing shear die, height adjusting mechanism, support no.

The utility model relates to goose goods processing technical field, concretely relates to a kind of packaging device for goose goods processing, including the shell of packaging machine, the outer wall of shell top is equipped with working groove, and the inner wall of one side of working groove is equipped with filter mechanism, the filter mechanism includes the connecting seat fixedly connected on the inner wall of working groove, and the outer wall of connecting seat bottom is fixedly connected with filter tube, the outer wall of filter tube is all equipped with multiple arc mouths, and the inner wall of arc mouth is fixedly connected with dust filter cloth, the outer wall of filter tube is provided with mounting sleeve, the utility model overcomes the deficiency of prior art, by setting filter mechanism in working groove, the setting filter mechanism is convenient to filter the air extracted in working groove, to avoid the condition that impurity is accumulated in vacuum pump in the process of vacuumizing, solve the problem that vacuum pump in the existing goose goods packaging device is easily damaged.

The utility model discloses a kind of multi-section mould force balance control's sole mould, it is related to shoe mould relevant field, comprising: upper mould lower end four corners are movably connected with lower mould by pneumatic push rod, lower mould lower end is installed in the top surface middle part of bearing seat by positioning bolt, offset detection mechanism is set to monitor the state of convenience of mould side, by being slidably connected in the right side inner side of second installation arch plate with second pressure sensor, so that mould when offset, second pressure sensor is buffered with second installation arch plate while effectively collecting data, to avoid second pressure sensor from being seriously damaged, by positioning bolt and positioning groove, mould is centrally positioned in the top surface of bearing seat, and then the bottom four corners pressure of mould is monitored by cooperating with the multiple groups of first pressure sensor of array setting, and then the mould top surface four corners mould force balance of synchronous regulation oil pressure system is balanced, reduce the occurrence of mould offset.

The invention belongs to the technical field of functional microorganism application, and particularly relates to a novel lipid-lowering peptide derived from a probiotic thallus and application thereof, the novel lipid-lowering peptide is a crushed substance derived from a probiotic lactobacillus plantarum thallus, and the molecular weight of the novel lipid-lowering peptide is less than 3kDa. And two key polypeptides APGFGDR (AP7) and TESGAFGR (TE8) are identified from the components, and can specifically inhibit the activities of pancreatic lipase and pancreatic cholesterol esterase. The extracted thallus peptide can be efficiently combined with cholate to inhibit the formation of cholesterol micelles, and has a remarkable inhibiting effect on pancreatic lipase and pancreatic cholesterol esterase. Animal experiments show that the mycopeptide can effectively improve lipid metabolism disorder induced by high fat diet, inhibit weight gain, reduce serum and liver lipid levels and relieve fatty degeneration and inflammation of the liver. The lipid-lowering peptide disclosed by the invention is high in safety and multi-target in action, and can be used for preparing functional products for preventing or treating metabolic diseases such as obesity, hyperlipidemia and the like.

This invention discloses the application of inosine in the preparation of drugs that promote testosterone secretion, belonging to the field of biomedical technology. The effective active ingredient of the above-mentioned drugs is only inosine or its pharmaceutically acceptable salts. The dosage forms of the above-mentioned drugs are tablets, capsules, oral liquids, lozenges, granules, powders, pills, powders, ointments, elixirs, suspensions, powders, or injections. The routes of administration of the above-mentioned drugs are oral, transdermal, intramuscular, subcutaneous, or intravenous injection. Since inosine exists under physiological conditions and can be metabolized by intestinal microorganisms, reasonable supplementation of inosine is a safer and more effective method for restoring testosterone. Inosine helps maintain the homeostasis of the intestinal flora, and the experimental results of this invention further show that inosine can restore the damaged intestinal barrier, thus making it safer. Moreover, this invention does not directly supplement exogenous testosterone, therefore it is less likely to induce spermatogenesis disorders or promote prostatic hyperplasia.

This utility model discloses a rotary joint and a crane, relating to the field of hydraulic oil conveying technology. The rotary joint includes an oil delivery shaft, an oil supply sleeve, and an oil distribution sleeve. The oil delivery shaft has at least two independent oil delivery channels inside. The oil supply sleeve is rotatably fitted onto the first end of the oil delivery shaft and has oil supply channels corresponding to the corresponding oil delivery channels, which are connected to each other. The oil distribution sleeve is rotatably fitted onto the second end of the oil delivery shaft and has oil distribution channels corresponding to the corresponding oil delivery channels, which are connected to each other. The oil delivery shaft is used to convey hydraulic oil between the oil supply sleeve and the oil distribution sleeve. The pipe connected to the oil supply sleeve and the rotating mechanism connected to the oil distribution sleeve can both rotate coaxially relative to the oil delivery shaft, which can improve the problem in related technologies where the rotary joint is subjected to a counter-torque, causing fatigue stress in the connected fixed pipe, resulting in loosening or damage.

The present application relates to the field of medicine and food, in particular to a novel application mode of astragalin. The present application provides a method for treating sepsis-related encephalopathy by using a medicine or preparation containing astragalin. Animal experiments show that astragalin can play a role in treating sepsis-related encephalopathy. It is found by the present application that astragalin can be used for preparing a medicine for treating sepsis-related encephalopathy.

The application relates to an intelligent street lamp, in particular to an integrated column type intelligent street lamp. The application provides an integrated column type intelligent street lamp with a wind removing function. The integrated column type intelligent street lamp comprises a base, a support column, a fixed frame, a first speed reducer, a first full gear and a lighting lamp, etc., the bottom of the support column is connected with the base, the upper portion of the support column is connected with the fixed frame, the right side of the top of the fixed frame is connected with the first speed reducer, the front side of the upper portion of the fixed frame is rotatably connected with the lighting lamp, and the left side of the output shaft of the first speed reducer is connected with the upper portion of the lighting lamp and is connected with the first full gear. The solar panel is rotatably connected with the rotating plate, when the wind is relatively strong, the solar panel can drive the sliding clamping block to rotate under the action of the wind, so that the sliding clamping block is separated from the fixed clamping block, in this way, the rotation of the solar panel can achieve the purpose of removing the force, and the solar panel can be prevented from being easily damaged due to the relatively strong wind.

The utility model provides butt joint assembly equipment for pipeline prefabrication production. The butt joint assembly equipment comprises a limiting sliding groove. The driving structure is mounted at one end of the limiting sliding groove; the butt joint structure is slidably connected to the interior of the limiting sliding groove, the butt joint structure comprises a support, a sleeve, a supporting plate, a screw hole and a limiting hole, the support is slidably connected to the interior of the limiting sliding groove in a vertical state, and the sleeve penetrates through and is fixed to the side wall of the top end of the support; the inflating structure is fixed on the side wall of the bracket; the butt joint assembly equipment for pipeline prefabrication production has the advantages that guide pipes of different sizes can be fixed conveniently, the side walls of the pipelines can be protected against damage, and the pipelines can be prevented from shaking during movable butt joint.

The utility model discloses a handle module of a shelf and a dish-washing machine, and the handle module comprises a handle body which is provided with a first handle piece and a second handle piece which are assembled; the decoration strip is made of a soft material and is positioned between the first handle piece and the second handle piece; the upper part of the handle body is provided with a mounting opening which is used for mounting the decoration strip and is positioned between the first handle piece and the second handle piece, the decoration strip is provided with a decoration part positioned in the mounting opening, and a mounting part which is bent and extends towards the direction of the first handle piece and / or the second handle piece is arranged along the inner end of the decoration part. According to the shelf handle, the decoration strip made of the soft material is arranged on the upper portion between the first handle part and the second handle part, so that an original gap is effectively filled, the overall appearance of the shelf handle is more exquisite, and the visual quality feeling of the shelf handle is improved. The installation part is arranged and can be better matched with the first handle part and the second handle part, the overall structural stability of the handle is enhanced to a certain degree, and the handle is more reliable in the using process.

The utility model relates to the technical field of fixing tools, and particularly discloses a camshaft grinding fixing device which comprises a base, a lifting frame, a fixing plate, a sliding plate, a sliding block and a grinding wheel, the lifting frame is slidably connected to the base in the vertical direction through a first linear driving piece, and the fixing plate is fixedly arranged on the lifting frame; the fixing plate is rotationally connected with a rotating table in the transverse direction through a first rotation driving mechanism, and the rotating table is provided with a clamping mechanism used for clamping the cam shaft. The sliding plate is slidably connected to the lifting frame through an adjusting mechanism, and the sliding plate is rotationally connected with an abutting block in the transverse direction. The sliding block is slidably connected to the base, the grinding wheel is rotationally connected to the sliding block, a second rotation driving mechanism used for driving the grinding wheel to rotate is arranged on the base, and a second linear driving piece used for driving the sliding block is arranged on the base. The camshaft grinding and polishing device has the effect that the problems that when a worker grinds and polishes the camshaft, operation is tedious, the labor load is increased, the machining precision is not high, and the camshaft is prone to being damaged are solved.

This invention provides a bamboo shoot harvesting and digging device and its method of use, relating to the field of bamboo shoot digging technology. It includes a handheld component with a soil-loosening component installed on it. The soil-loosening component is used to loosen the soil around the bamboo shoot. A swing control component is installed on the handheld component, used to adjust the cutting position. A bamboo node detection component is installed on the swing control component, used to indicate the bamboo node location. A cutting component is installed on the bamboo node detection component. The soil-loosening component facilitates loosening the soil around the bamboo shoot, making subsequent cutting easier, while the structure does not damage the bamboo shoot. This solves the problem that current bamboo shoot harvesting and digging devices are not conducive to assisting manual identification of bamboo node intervals and that the digging and cutting position is not accurate enough.

This utility model relates to an assembly fixture, belonging to the field of thrust rod technology, specifically an open bushing type thrust rod assembly fixture, including a housing. An assembly assembly component is provided on the outside of the housing, comprising a base, a reducing ring, and a rubber bushing. In this utility model, the rubber bushing is placed inside the reducing ring. An external power device drives a pressure head to move downwards. Under the compression of the inner wall of the reducing ring, the rubber bushing shrinks, facilitating its insertion into the housing. The portion of the rubber bushing inserted into the housing returns to its original shape due to its elasticity, fitting tightly against the inner wall of the housing. This achieves the effect of facilitating the installation of the rubber bushing, solving the problem of easy damage to the rubber bushing during assembly, ensuring the performance and dimensional consistency of the assembled assembly, and improving product stability. It also solves the problem of large interference fit dimensions between the existing bushing and housing, leading to damage to both.

The application provides a new use of L-beta-galactosaminoglucan, and specifically provides application of L-beta-galactosaminoglucan in resisting vaginitis.

The utility model discloses a kind of clutches shell casting tool jigs, including bottom plate, it is characterized in that, fixedly arranged with fixed frame on the bottom plate, the fixed frame is bent, the lateral rod of the fixed frame is fixed the bottom plate, the lateral rod of the fixed frame is fixedly connected with a pair of fixed plate three on upside, one side of each described fixed plate three is fixedly connected with stand two respectively, each described stand two is fixed the fixed frame, the other side of fixed plate three is fixedly connected with symmetrical limit block two, each described limit block two is slidably connected with first support rod respectively, the utility model relates to clutch shell casting tool jig processing technical field, specifically, it is related to a kind of clutch shell casting tool jig, the movability of first support rod and the adjustable fixity of support plate, can be according to the clutch shell casting demand of different size and shape, flexibly adjust support position and angle.

The invention discloses application of a herba houttuyniae polysaccharide extract in a feed capable of improving intestinal health of piglets, the feed comprises the herba houttuyniae polysaccharide extract and a basic feed, and the application method of the herba houttuyniae polysaccharide extract comprises the following steps: adding the herba houttuyniae polysaccharide extract into the basic feed, and continuously feeding 21-28-day-old weaned piglets for 28 days, the intestinal flora structure of weaned piglets is adjusted through the houttuynia cordata polysaccharide extract, short-chain fatty acid secretion is promoted, and the intestinal morphology is improved, so that diarrhea prevention and intestinal health improvement are achieved; the herba houttuyniae polysaccharide extract is prepared from the following components in percentage by mass: 20 percent to 21.6 percent of herba houttuyniae polysaccharide, 5 percent to 10 percent of volatile oil, 25 percent to 35 percent of flavonoid, 10 percent to 15 percent of total amino acid, 3.1 percent to 6.1 percent of alkaloid, 3 percent to 10 percent of organic acid and 1.5 percent to 5.5 percent of sterol, and the herba houttuyniae polysaccharide is prepared from glucose, galactose, mannose, arabinose and xylose. The invention aims to improve the survival rate of early weaned piglets, shorten the breeding cycle of a farm and improve the reproductive performance.