11 results about "Nitrogen balance" patented technology

The present application belongs to the field of ecology and environmental monitoring technology, and relates to a kind of detection and analysis method for decomposition rate of leguminous sand-fixing shrub litter in field.The present application screens sample area by system grid method, collects and lays out litter bag, synchronously determines initial and current nitrogen content of soil, calculates net increment of soil nitrogen, determines horizontal diffusion boundary of nitrogen, and then obtains soil absorbed nitrogen amount;obtains equivalent dry matter loss amount based on nitrogen balance calibration, and finally determines litter decomposition rate by exponential decay fitting.The method solves the decomposition rate estimation deviation problem caused by nitrogen migration and soil absorption in traditional detection, can more accurately reflect the actual decomposition process in field, improves the reliability of monitoring data, and provides reliable technical support for nutrient cycling research and ecological restoration effect evaluation of desert ecosystem.

The invention discloses a lactation buffalo production performance regulation and control method based on rumen energy nitrogen balance regulation and control, and relates to the technical field of lactation buffalo rearing, the method comprises the steps of obtaining and fusing rumen internal environment parameters, individual ingestion behaviors and production performance data of lactation buffalo, and obtaining a multi-source data fusion analysis result through multi-source data fusion analysis; generating a rumen-physiological dynamic metabolic potential energy map; based on a rumen-physiological dynamic metabolic potential energy map, performing digital twinborn deconstruction analysis on daily ration composition to obtain energy nitrogen libraries with different degradation characteristics; the ideal supply gap spectrum of each energy nitrogen library is dynamically calculated in combination with physiological time sequence parameters obtained in real time; and according to the ideal supply gap spectrum of each energy nitrogen reservoir, precise nutrition intervention is cooperatively executed through time sequence matching feeding, form adaptation regulation and control and targeted supplement regulation and control. The problems of lactation performance fluctuation, low feed utilization efficiency and high metabolic stress risk caused by energy nitrogen imbalance are solved.

The application discloses a nitrogen balance mechanism for a cradle rotary table and a debugging method thereof, and relates to the technical field of mechanical lathe equipment.The application comprises a rack, support shafts are fixedly connected to the two sides of the rack, drive boxes are movably connected to the surfaces of the support shafts, first nitrogen balance cylinders are arranged in the drive boxes, balance assemblies are arranged in the drive boxes, the balance assemblies comprise balance discs, connecting rods are fixedly connected to one side of each balance disc, rotary discs are fixedly connected to the other end of each connecting rod, and second nitrogen balance cylinders are arranged on one side of each rotary disc.The balance assemblies can balance the rotating strength of the rack by the first nitrogen balance cylinders when the rack rotates, the second nitrogen balance cylinders can be quickly connected when the first nitrogen balance cylinders are damaged, the second nitrogen balance cylinders can replace the first nitrogen balance cylinders, the stability of the rotating adjustment of the rack is ensured, and the rack does not need to be stopped for a long time for maintenance.

The invention provides a high-efficiency protein supplement and a preparation method thereof, and belongs to the technical field of nutritional preparations. The protein supplement is prepared from the following components in parts by mass: 30 to 50 parts of bovine whey concentrate protein, 20 to 30 parts of bovine whey isolate protein, 10 to 20 parts of bovine whey hydrolysate protein and 10 to 20 parts of sheep whey concentrate protein. The protein supplement can synergistically improve metabolism, has lower potential sensitization, can release amino acid more stably and lastingly, and is obviously superior to single or common mixed whey protein with equal nitrogen content in the aspects of improving postoperative nitrogen balance and reducing muscle loss. The invention also provides a specific preparation process of the composition, the uniformity and stability of the product are ensured, and the composition has a good application prospect.

A shaping and preheating system for a central mechanism capsule of a tire vulcanizer comprises a capsule, the capsule is connected with an air inlet shaping / vulcanization stop valve and an exhaust shaping / vulcanization stop valve through an air inlet pipeline and an exhaust pipeline respectively, the air inlet shaping / vulcanization stop valve is connected with a shaping / preheating stop valve through a pipeline, the shaping / preheating stop valve is connected with a steam balance valve through a steam pipeline, the steam balance valve is connected with a steam filter through a steam pipeline, and the steam filter is connected with low-pressure steam through a steam pipeline; the shaping / preheating stop valve is connected with a check valve through a nitrogen pipeline, the check valve is connected with a nitrogen balance valve through a nitrogen pipeline, the nitrogen balance valve is connected with a filter through a nitrogen pipeline, and the filter is connected with shaping nitrogen through a nitrogen pipeline; therefore, the system is simple and convenient, the use efficiency of equipment is improved, and the service life of the capsule is ensured.

This invention provides a pressure relief check valve and a vulcanization shaping pipe assembly for rubber tire vulcanization. The pressure relief check valve has a first channel and a third channel connecting the valve cavity, and a second channel connecting the air release channel and the third channel, all on the valve stem. A first sealing element with a conical outer circumference is provided, with the smaller diameter end of the first sealing element facing the air inlet channel. In this way, nitrogen entering through the air inlet channel can compress the conical outer circumference of the first sealing element and enter the valve stem through the first channel, thus achieving air intake. When air intake ends and the pressure in the pipe connected to the valve stem is too high, nitrogen can flow back to the valve cavity through the first channel, and then sequentially through the third channel and the second channel before entering the exhaust channel. In this way, pressure relief can be achieved through the exhaust channel without the need for a nitrogen balancing valve, thus not affecting the service life and accuracy of the nitrogen balancing valve on the pipeline.

This invention discloses a preheating and temperature compensation method, system, medium, equipment, and product for a compressed air energy storage system's heat storage tank in the field of compressed air energy storage technology. The method includes: during cold start-up of the compressed air energy storage system, high-temperature air from the air compressor outlet and the heat storage medium are introduced into the expansion-side heat exchanger. A staged heating strategy is used to exchange heat between the high-temperature air and the heat storage medium, raising the heat storage medium to the target temperature. After preheating, the high-temperature water tank is switched to operating mode, and the low-temperature water tank is switched to standby mode for temperature compensation. During heat storage, if the temperature difference between the high and low-temperature water tanks exceeds a temperature threshold, or the pressure difference between the high and low-temperature water tanks exceeds a pressure threshold, a nitrogen balance system is used to adjust the nitrogen flow rate and nitrogen injection volume to achieve dynamic temperature balance. During heat release, if the inlet air temperature of the expansion-side air-water heat exchanger is lower than the heat release temperature threshold, an auxiliary electric heater is activated for supplementary heating.

The invention relates to a fused salt heat storage energy-saving type nitrogen sealing device, which is applied to a fused salt heat storage system comprising a cold fused salt tank, a hot fused salt tank and a salt dredging tank, and comprises a nitrogen balancing pipe, a nitrogen sealing device, a nitrogen sealing device, a nitrogen sealing device and a nitrogen sealing device, and is characterized in that the nitrogen balancing pipe is communicated with a top gas side space of the cold fused salt tank, the hot fused salt tank and the salt dredging tank; the breathing device is arranged on the nitrogen balance pipe, and the breathing device is configured to discharge gas in the nitrogen balance pipe when the internal pressure of the system exceeds a preset positive pressure threshold value and suck gas into the nitrogen balance pipe when the internal pressure of the system is lower than a preset negative pressure threshold value. According to the designed fused salt heat storage energy-saving nitrogen sealing device, the nitrogen balance pipe is used for communicating the gas side space of each storage tank, so that the pressure fluctuation in the system can be effectively buffered and balanced, the nitrogen loss caused by the volume change of fused salt is remarkably reduced, the supplement demand of external nitrogen is greatly reduced, and the nitrogen sealing efficiency is improved. Therefore, the nitrogen consumption of the fused salt heat storage system is greatly reduced, the operation cost is practically saved, and the economic benefit is improved.

The utility model discloses a kind of nitrogen balance cylinder mechanism's vertical column robot handling device, it includes vertical column, nitrogen balance cylinder mechanism being arranged in the one side of the vertical column, support frame being movably arranged in the other side of the vertical column, first driving part driving the up-and-down movement of the support frame, transmission unit being arranged on the support frame and gripper being arranged in the end of the transmission unit;The nitrogen balance cylinder mechanism includes nitrogen cylinder, gas control unit and nitrogen balance cylinder connected by pipeline in turn, the gas control unit includes the proportional valve of adjusting gas pressure value and the pressure sensor of detecting gas pressure value, the bottom of the nitrogen balance cylinder is connected on the support frame.The utility model its counterweight stability, effectively reduce the actual load of robot support frame, also can realize the accurate control to nitrogen balance cylinder inner gas pressure, improve the stability and response precision of pneumatic balance system.

The invention provides an efficient autotrophic nitrogen removal system and method based on anaerobic ammonia oxidation, and relates to the field of autotrophic nitrogen removal. The efficient autotrophic nitrogen removal system based on anaerobic ammonia oxidation comprises a pretreatment module, an adjusting module, an anaerobic ammonia oxidation reaction module, an adjusting control module, a nitrogen element balance module and a water and gas discharging module which are connected in sequence, the pretreatment module is used for carrying out preliminary physical or chemical treatment on input nitrogen-containing wastewater, removing large particles, grease and suspended solids, controlling the turbidity of inlet water and ensuring the mass transfer efficiency of a subsequent biological reaction unit. According to the invention, trace greenhouse gases in the tail gas are monitored and treated through the gas treatment unit, so that the emission of the greenhouse gases is reduced, and nitrogen in wastewater can be efficiently recovered and released in a harmless nitrogen form, so that the generation of nitrogen pollution is reduced; the autotrophic nitrogen removal system and method have the characteristics of low energy consumption, low material consumption and low sludge yield.

The invention discloses a nitrogen balance system applied to upper and lower shaft load of high-load and high-speed numerical control equipment, which comprises a nitrogen balance cylinder, the nitrogen balance cylinder comprises a cylinder barrel, a front end cover component and a rear end cover, the front end cover component and the rear end cover component are mounted at two ends of the cylinder barrel, a piston is arranged in the cylinder barrel, and a piston rod is mounted on the piston. The end of the piston rod penetrates through the front end cover assembly to be connected with an external load end, an oil storage hole is formed in the front end cover assembly, lubricating oil for continuously lubricating and continuously cooling the piston rod is stored in the oil storage hole, and the ratio K of the cross section area of a cylinder hole of the cylinder barrel to the cross section area of the piston rod ranges from 8 to 30. Lubricating oil in the oil storage hole can continuously lubricate the piston rod, so that the dynamic friction coefficient between the piston rod and the sealing ring is greatly reduced, the friction lag time in the piston starting and reversing process is shortened, the ratio K is set between 8 and 30, under the same nitrogen pressure, high-load inertia and friction resistance can be overcome more easily, and the service life of the piston rod is prolonged. And the starting delay time of force transmission is shortened.