69 results about "Atmosphere" patented technology

A snow-gun for producing man-made snow from a combination of compressed air and water features a new nozzle configuration for discharging a mixture of water-particles and air into the surrounding atmosphere. Such nozzle is provided with an elliptically-shaped discharge port having a transverse cross-section that gradually expands in size in the direction in which the air and water particles are discharged from said nozzle. Preferably, the area of the elliptical port changes non-linearly through the front wall of the nozzle, whereby water particles exiting the gun through the nozzle port are less likely to collide with the side walls of the port or with each other before reaching the relatively cold ambient atmosphere.

The invention relates to a lithium silicate-coated Ni-Co lithium aluminate positive electrode material and a preparation method thereof. The mass percent of lithium silicate in the material accounts for 1-10wt%, a coating layer with a thickness being 2-20 nanometers is formed from the silicon silicate and is coated on Ni-Co lithium aluminate, and the positive electrode material is a spherical particle with a grain size being 5-15 micrometers. The method comprises the following steps of (1) adding a silicon source into an organic solvent, performing uniform stirring, adding water, adding Co-Alnickel hydroxide, performing heating and stirring reaction, and performing drying to obtain silicon dioxide-coated Co-Al nickel hydroxide precursor powder; and (2) grinding and uniformly mixing the silicon dioxide-coated Co-Al nickel hydroxide precursor powder and a lithium salt, placing the mixture in a tubular furnace, and performing two-segment calcination under an oxidization atmosphere, thereby obtaining the lithium silicate-coated Ni-Co lithium aluminate positive electrode material. The positive electrode has relatively good cycle stability and large-rate discharging performance; and bythe method, the problem of lithium resided on a surface during conventional coating can be effectively reduced, and the method is low in cost and simple in process and is suitable for industrial production.

The invention provides a sludge-based adsorbent used for desulfurization and demercuration of flue-gas and a preparation method thereof. The sludge-based adsorbent employs municipal sludge and/or papermaking sludge as a raw material. The preparation method comprises the following steps: adding an activator and a physical conditioning agent into sludge slurry and carrying out mixing under stirring and mechanical dehydration; carrying out grinding and screening after drying; and carrying out physical activation after pyrolysis in an inert atmosphere so as to prepare the sludge-based adsorbent. According to the invention, the sludge slurry is used as a raw material, and uniformity of the activator and the physical conditioning agent is improved by using a wet method and the means of mixing; the activator and the physical conditioning agent can reduce repulsive interaction and hydrophilic interaction among electronegative sludge particles, and a porous lattice structure with a hard texture and good permeability is formed in a sludge cake obtained after pressure filtration and dehydration; the prepared adsorbent can be used for desulfurization and demercuration of flue-gas; and the preparation method has the advantages of simple procedures, easily controllable conditions, capacity of realizing harmony and unity of sludge treatment and resource utilization and good economic benefits, environmental benefits and social benefits.

The invention relates to a catalyst for ternary copolymerization of norbornenes, tetrafluoroethylene and pentenes and a ternary copolymerization method. The catalyst is characterized in that the catalyst is prepared through the following method comprising the steps of: dissolving iron dichloride, a ligand and an alkyl metal compound in a solvent in a dry single-neck glass bottle in an inert gas atmosphere, sealing a bottle mouth through an emulsion pipe, keeping the constant temperature in a water bath at the temperature of 40-50 DEG C for 10-30min, and cooling to obtain an iron complex catalyst. Compared with the prior art, the catalyst provided by the invention is a novel iron complex catalyst which can produce catalytic activity in an nitrogen-protected system at a certain pressure and the temperature of 20-120 DEG C so as to catalyze the ternary copolymerization of the norbornenes with the tetrafluoroethylene and the pentenes, and a product after soaking in methanol is very easy to wash and separate. The catalyst has the characteristics of high copolymer yield, low reaction temperature, low price, easiness in obtainment, high catalytic efficiency and the like.

Provided is an auto-thermal evaporative liquid-phase synthesis method for cathode material for battery, comprising the following steps: (1) Adding a synthetic raw material of cathode material into a solvent to obtain a mixture A, the synthetic raw material of the cathode material containing lithium source, adding an accelerant into the mixture A, which makes the mixture A achieve a strong auto-thermal reaction to release heat to evaporate the solvent, and obtaining a solid precursor of the cathode material; (2) Drying the precursor, sintering in an atmosphere furnace and obtaining the cathode material. The method is simple in process, low in energy consumption, requirements for equipment and cost, and is applicable to industrial mass production and application. The cathode material obtained through the method is stability in batch, easy to process, low in internal resistance and high in capacity and has an excellent charging and discharging performance.

A silicon single crystal is produced by the CZ process by setting a hydrogen partial pressure in an inert atmosphere within a growing apparatus to 40 Pa or more but 400 Pa or less, and by growing a trunk part of the single crystal as a defect-free area free from the Grown-in defects. Therefore, a wafer the whole surface of which is composed of the defect-free area free from the Grown-in defects and which can sufficiently and uniformly form BMD can be easily produced. Such a wafer can be extensively used, since it can significantly reduce generation of characteristic defectives of integrated circuits to be formed thereon and contribute for improving the production yield as a substrate responding to the demand for further miniaturization and higher density of the circuits.

There is provided an air-fuel ratio sensor with which an improvement in the accuracy in detecting the air-fuel ratio of detection target gas and an improvement in the response characteristics can both be achieved. The sensor includes a sensor element that outputs an output signal indicative of the air-fuel ratio of a detection target gas, a pair of electrodes including a detection target gas side electrode to which the detection target gas is introduced and an atmosphere side electrode exposed to the atmosphere, which are arranged in such a way as to sandwich the sensor element, a diffusion-controlling layer that is disposed on the sensor element in such a way as to cover the detection target gas side electrode and introduces the detection target gas from an entrance portion through which the detection target gas flows in to the detection target gas side electrode, and a catalyst layer provided on a part of the entrance portion.

The invention belongs to the technical field of radio frequency electronic application, and in particular relates to a remote library occupancy system and method based on radio frequency identification. The system comprises a reservation terminal, a background server and a card reading module. The reservation terminal is used for receiving the input of reservation information and sending the reservation information to the background server. The reservation information comprises identity information and seat information. The background server sends a reservation request to the designated card reading module according to the seat information in the reservation information. The reservation request comprises the identity information. The card reading module receives and stores the reservationrequest transmitted by the background server, and reads and verifies whether identity information in an IC card matches the identity information in the reservation request. According to the invention,the function of remote library reservation and occupancy is realized; the system has the advantages of simple structure and high practicability; non-standard occupation in a library is effectively reduced; the intension of management personnel is reduced; and a good occupancy and learning atmosphere is created.

On top of respective areas divided by partition plates, that is, a cassette station, a processing station, and an interface section in a coating and developing processing system, gas supply sections for supplying an inert gas into the respective areas are provided. Exhaust pipes for exhausting atmospheres in the respective areas are provided at the bottom of the respective areas. The atmospheres in the respective areas are maintained in a clean condition by supplying the inert gas not containing impurities such as oxygen and fine particles from the respective gas supply sections into the respective areas and exhausting the atmospheres in the respective areas from the exhaust pipes.

A hand-held laser-welding wand includes a gas lens assembly that develops an inert gas atmosphere around a weld pool. The lens assembly additionally reflects laser light and thermal radiation that is reflected off a work piece surface away from the hand of a user of the hand-held laser welding wand.

The invention discloses an ultraviolet light communication method and an ultraviolet light communication system and belongs to the technical field of communication. The method comprises the following steps that: an emitting machine converts obtained voice signals into voice coding signals, a modulation circuit is modulated according to the voice coding signals so that the voice signals are converted into ultraviolet light signals, and the ultraviolet light signals are sent to a receiving machine through an ultraviolet atmosphere passage. The voice signals are converted into voice coding signals, and in addition, the brightness of an ultraviolet sterilization lamp is controlled through the voice coding signals, so the voice signals are converted into light signals, the light signals are transmitted, the price of the adopted ultraviolet sterilization lamp is low, the service life is long, and the communication capability of solar-blind region ultraviolet light is realized.

The invention discloses a method for preparing silicon nitride powder with saw dust, comprising the steps of: taking saw dust and silica sol as raw materials; sufficiently using the characteristics such as the porosity, the easy impregnating and the high-temperature carbonizing of the saw dust, and the easy grinding of the produced saw dust; drawing inorganic substance into the saw dust by means of sol-gel; filling the gel which takes silicon dioxide as main component into gaps of woods, so that the raw materials are evenly mixed; carbonizing, carbon thermally reducing and nitriding silica sol-impregnated saw dust in a high-temperature controllable atmosphere furnace to prepare Si3N4 ceramics powder. The method is characterized of obtaining the Si3N4 ceramics powder with higher purity, high alpha phase content and small grain diameter, and marrow granularity distribution range; preparing the high-quality Si3N4 ceramics powder with a technology with lower cost; reasonably and sufficiently utilizing the saw dust; and recycling waste material. The method is experimentally tested to have good performance for synthesizing the silicon nitride powder, and be an effective and feasible way.

The invention discloses an inorganic sensitive layer based surface enhanced Raman spectrum detection technology and material preparation thereof. According to the detection technology, a surface enhanced Raman spectrum material based on an inorganic sensitive layer is used as an active substrate of a surface enhanced Raman scattering, and is exposed in the small molecule atmosphere; a new solid substance formed by specific reaction of the inorganic sensitive layer and small molecules to be detected by a Raman spectrometer is detected, and the type of the small molecules is obtained according to the Raman spectrum of the new solid substance; according to the preparation method, a colloid electrostatic self-assembly method, a thiourea-induced isotropic shell growth method, a metal halogenation method and a physical deposition method are used for a precious metal nanoparticle colloidal solution, a metal salt solution and a thiourea solution to prepare the material in which precious metalnanoparticles are coated with a metal oxide layer, or the precious metal nanoparticles are coated with a metal sulfide layer, or the precious metal nanoparticles are coated with a metal halide layer.The technology can be used for real-time online detection of hydrogen sulfide, carbon disulfide, hydrogen chloride, mustard gas, nitrogen dioxide and the like.

The invention relates to a system of power test, and the objective is to provide an air-fuel mixed power test system. In the test system, an eddy current dynamometer is connected with a pneumatic engine, a hydraulic dynamometer is connected with an internal combustion engine; and the test system also includes a gas tank for storing high pressure gas, the gas tank is connected with a heat exchanger, a stable pressure box and a pneumatic engine in order via pipelines; high-temperature discharging pipelines of the internal combustion engine is connected with the heat exchanger, exchanging heat with high pressure gas by the heat exchanger and communicationg with the atmosphere; a pressure sensor is provided on the stable pressure box, pipelines of the gas tank outlet is provided with an air flow meter, high pressure gas pipelines of both sides of the heat exchanger is provided with a thermocouple respectively; and all the pressure sensor, the air flow meter and the thermocouple are connected with a computer. The invention provides feasible test system for verifying validity of the air-fuel mixed power test system theoretical derivation, being able to provide reliable experimental parameters for implementation of more advanced air-fuel mixed power system in the future.

A primary particulate diffusion eliminating method and an apparatus thereof belong to the technical field of environmental science and engineering, and relate to a method and an apparatus for implanting unipolarity ions to charge and thicken PM 2.5 by diffusion charging thickening, and trapping to eliminate PM 2.5 primary particulates. The apparatus is characterized by comprising a unipolarity ion generation part, a diffusion charging part and an electron trapping part; the eliminating method is characterized by comprising: implanting the PM 2.5 primary particulates and high-concentration unipolarity ions in a high-frequency high-pressure alternating electric field at a time, thickening into primary particulates each with particle size of larger than 2 [mu]m via diffusion charging coagulation, trapping under the effect of static electric field active force to eliminate pollution of the PM 2.5 primary particulates with elimination rate of 85%-99.8%. An effective method is provided for elimination of PM 2.5 primary particulate atmosphere pollution, also can be used in ultrafine dust diffusion charging pre-coagulation of dedusters, and has the advantages of being high in trapping efficiency, substantially low in initial investment and operation cost and energy consumption, and the like.

The invention discloses a recovery method of an alkyl-halide fire extinguishing agent in a fire extinguishing bottle for aviation, which belongs to the technical range of recovery of fire extinguishing agents. The recovery method comprises the following steps of: firstly, establishing a fire extinguishing agent recovery system which enables a fire extinguishing agent to be liquefied by reducing the temperature and increasing the pressure simultaneously; setting the temperature of a refrigeration house to be -40 DEG C and the volume of a pressure storage tank to be 35L according to practical needs; placing the pressure storage tank in the small refrigeration house or refrigerator, placing the fire extinguishing bottle outside the small refrigeration house or refrigerator; connecting the pressure storage tank to the fire extinguishing bottle and the fire extinguishing agent storage tank respectively; opening an inlet shutoff valve to release the fire extinguishing agent in the fire extinguishing bottle to the pressure storage tank, wherein the pressure storage tank is higher than the fire extinguishing agent storage tank, and the liquid fire extinguishing agent in the pressure storage tank flows towards the fire extinguishing agent storage tank under the action of gravity; and automatically recovering according to specific pressure. The recovery method diclosed by the invention has the advantages that the fire extinguishing agent discharged into the atmosphere is obviously reduced, so that the environment is protected, and the purposes of reducing the waste of the fire extinguishing agent and improving the recovery efficiency of the fire extinguishing agent are fulfilled.

In stunning of slaughter animals by means of a box stunning apparatus with stunning atmosphere, boxes (1, 1a, 1b, 1c, 1d) are conveyed around after one another to various stop positions by means of a transport system (11, 12). Animals to be stunned are driven forwards in a driveway (2) and into an entrance area (3). The animals in the entrance area are separated from other animals after a group of animals has passed into the area. The group is driven into an empty box (1) that is brought to a halt in the first stop position at the entrance area. The box is then conveyed into the stunning atmosphere. After the animals have been in the atmosphere the box is conveyed out of the atmosphere and is brought to a stop at an emptying area (13) to empty the box of stunning animals.

The invention discloses a microbial improvement method for soil of an abandoned land of a mine. The method comprises the following steps of step 1, soil stabilization and plant surface planting through bacillus subtillis, wherein antibiotics are generated, hormones stimulating the plant growth are secreted, and host microorganisms are trapped and killed; step 2, nitrogen fixation, wherein gaseousnitrogen in the atmosphere is fixed through nodule bacteria, brown nitrogen-fixing bacteria and frankiaceae for providing nitrogen nutrients for plants; step 3, phosphorus and potassium adding, wherein potassium, silicon and phosphorus in soil minerals are decomposed through bacillus mucilaginosus; step 4, phosphorus and potassium dissolving. The microbial improvement method for the soil of the abandoned land of the mine has the advantages that through multi-proportion addition of a microbial agent, the introduction of harmful microbes is controlled and cut off, beneficial microbes are cultivated, the soil is improved continuously through the action of the beneficial microbes, heavy metals are controlled, chelated and conditioned through the decomposition characteristics of the cultivatedmicrobes, the PH value of the soil is neutralized, soil ripening is accelerated to improve the soil, the self-purification action is strengthened, and natural circulation is accelerated to improve thehealthy growth of hyperaccumulators.

The invention relates to a manufacturing method of a rare earth metal PrNd rotary target. The manufacturing method comprises the following steps: preparing rare earth metal PrNd powder, the average grain size D50 of which is 40-70[mu]m, by means of a hydrogenation dehydrogenization method-crushing method; in a protective atmosphere, filling a graphite mold of a vacuum hot pressing sintering furnace with the powder; in the protective atmosphere, carrying out hot press molding to obtain a rare earth metal PrNd target blank, wherein the hot pressing temperature is 760-900 DEG C and the molding pressure is 19-30MPa, and maintaining the temperature and pressure for 1-2 h; and machining the molded target and welding a copper or stainless steel back target. The target provided by the invention isused for improving the magnetic performance of a NdFeB magnet by grain boundary diffusion PrNd, the use level of rare earth elements can be reduced greatly, and the manufacturing cost of the high performance NdFeB magnet is saved.

The invention discloses a structure for a motor of an electric vehicle. The structure comprises a shaft, a driving plate, a shell, a stator core coil winding, a bracket plate and a rotor, wherein the driving plate is fixedly sleeved on the shaft end of peripheral; one end of the shell is dynamic hermetically and rotatably sleeved on the periphery on one end of the shaft; the rotor is fixedly sleeved on the shaft; the stator core coil winding is located inside the inner circumference of the rotor; the stator core coil winding is fixedly arranged on the bracket plate; the inner side of the bracket plate along the circumference direction is dynamic hermetically and rotatably sleeved on the shaft; one end of the bracket plate on the outer side along the circumference direction is hermetically and fixedly connected with the other end of the shell; a circular sealing space is formed by the shaft, the bracket plate and the shell; and the rotor and the stator core coil winding are both located in the circular sealing space. The structure for the motor of the electric vehicle is high in continuous stability, the bracket plate is in direct contact with atmosphere, the heat generated by the stator core coil winding is directly emitted to the atmosphere and the radiating speed is high, so that the temperature of the stator core coil winding can be quickly reduced, the power loss of the motor is reduced and the efficiency of the motor is increased.

The invention belongs to the technical field of electrochemical materials, and particularly relates to a preparation method of an electromagnetic shielding heat dissipation film. The method comprisesthe following steps of obtaining carbon nanotube films and graphene films; after at least one layer of the carbon nanotube films and at least one layer of the graphene films are alternately laminated,performing hot pressing treatment in a protective gas atmosphere of 2,800-3,000 DEG C for 8-10 hours to obtain a laminated function layer of carbon nanotubes and graphene; obtaining a base layer, andattaching the laminated function layer to one side surface of the base layer by using an adhesive; and obtaining a heat conduction adhesive, and applying the heat conduction adhesive to the other side surface, away from the base layer, of the laminated function layer to form a heat conduction adhesive layer, and obtaining the electromagnetic shielding heat dissipation film. The preparation methodof the electromagnetic shielding heat dissipation film is simple in process, easy to operate and convenient for industrial production and application.

The invention discloses an external wall thermal insulation system which comprises a wall body. An insulation board, a first rigid sheet, an alkali-resistant fiberglass mesh fabric and a decorative layer are sequentially arranged on the outer side wall of the wall body from inside to outside. Correspondingly, the invention further provides a construction process of the external wall thermal insulation system. The external wall thermal insulation system disclosed by the invention adopts a rigid and flexible combined mode of the rigid sheet and an alkali-resistant fiberglass mesh, so that the phenomenon of a rugged external wall face generated due to influence of the atmosphere and construction operations on the insulation board can be effectively prevented, an insulating effect is effectively reinforced and the service life is prolonged. The construction process of the external wall thermal insulation system is simple in step, high in speed and work efficiency and obvious in effect.