388results about How to "Avoid hypoxia" patented technology

A device and a process for controlling a respirator with inclusion of an oxygen saturation value (34) for compensating a device-dependent time response (15), a physiological time response (16) and a measuring method-dependent time response (17) are described. The device-dependent time response (15), the physiological time response (16) and the measuring method-dependent time response (17) are determined in a continuous sequence and a run time of a change in the oxygen concentration from the metering means (9) in the respirator to the patient (4) is determined and taken into account in regulating the oxygen concentration.

The invention discloses a method and device for treating organic solid waste. The method comprises the steps: (a) carrying out physico-chemical pretreatment, namely adding water and additives into the waste, and heating and stirring; (b) carrying out hydrolysis, namely hydrolyzing the waste which is subjected to physico-chemical pretreatment, so as to obtain a hydrolyzate; (c) carrying out oxidization, namely oxidizing the hydrolyzate, so as to obtain an oxidization product; (d) carrying out solid-liquid separation, namely carrying out solid-liquid separation on the oxidization product, so as to obtain a solid oxidization product and a liquid oxidization product; and (e) carrying out activation, namely activating the solid oxidization product in the case of heating, pressurizing, steaming and additive adding, thereby obtaining an activated product.

The invention discloses a preparation for resisting altitude sickness and an application of the preparation and relates to the field of medicinal preparations. The preparation for resisting the altitude sickness comprises 0.05-0.2 g of acetazolamide, 10-20 mg of coenzyme Q10, 500-1,000 mg of tyrosine and 1-2 mg of selenium, wherein selenium can be selenium salt and selenium yeast. The preparation is used for preventing altitude sickness symptoms such as headache, insomnia, dyspnea and the like. According to the application, the altitude sickness symptoms can be prevented in multiple drug-delivery ways including subcutaneous injection or intramuscular injection, intravenous injection or intravenous drip, oral administration including pills, capsules, tablets and the like and a nasal drug delivery system such as nasal spray and the like. The preparation has the benefits that the preparation can prevent altitude sickness symptoms such as headache, insomnia, dyspnea and the like, can effectively prevent altitude sickness and can overcome side effects of acetazolamide when the use quantity of the preparations is smaller than a conventional dosage of acetazolamide.

The invention provides an environmental-friendly coal-saving agent for a cement shaft kiln, comprising the following raw materials by weight portion: 3-7 portions of a coal combusting low-temperature modifying agent, 2-6 portions of a compound sulphur-fixing agent, 0.5-0.96 portion of a combusting inductive agent, 3-7 portions of a raising agent, 56-96 portions of a combusting poising agent, and 5-15 portions of a highly-efficient sulphur-fixing agent. The coal combusting low-temperature modifying agent can be potassium permanganate, potassium chlorate, potassium perchlorate, sodium chlorate, sodium nitrate and the like; the compound sulphur-fixing agent can be sodium carbonate, calcium oxide and the like; the raising agent can be waste liquor of paper mill containing Na or / and Ca sulphonate and the like; and the combusting poising agent can be a chemical waste reducing substance containing sodium chloride and the like. The method solves the problems of environmental pollution and resource waste in the prior art, uses compatibility of multiple chemical raw material of 6-10 percent and chemical waste to prepare the coal-saving agent with small dosage and fast effect to be added to the production of the cement shaft kiln in trace quantity, and has the advantages of resource conservation by using waste, coal conservation and consumption reduction, and reduction of dust and SO2 discharge and environmental pollution.

The invention discloses an environment-friendly efficient waste incinerator. The environment-friendly efficient waste incinerator comprises a lower incinerator body part, an upper incinerator body part, an internal chimney, a base, an incinerator cover and an external chimney. The upper incinerator body part and the lower incinerator body part of an incinerator body are welded into a whole. The internal chimney is arranged in the middle of the lower incinerator body part and the middle of the upper incinerator body part. A combustion chamber is formed by the lower incinerator body part and the internal chimney. Refractory bricks are arranged on the periphery of the lower incinerator body part and the periphery of the upper incinerator body part. The bottom end of the lower incinerator body part is connected with the base. Both the upper surface and the lower surface of the base are open. The incinerator cover is arranged on the upper incinerator body part. The external chimney is arranged at the top of the incinerator cover in a connected mode. A water tank is arranged outside the lower incinerator body part. An oil tank is further arranged in the water tank. A water pipe and an oil pipe are arranged in the internal chimney. The water pipe is communicated with the water tank. The oil pipe is communicated with the oil tank. According to the environment-friendly efficient waste incinerator, oil in the oil pipe can be gasified by means of heat generated during waste combustion, so that waste on the upper portion of the incinerator body can be combusted for the second time, continuous waste combustion is achieved, incineration is thorough and rapid, and the incineration effect is good; pollution to the environment is small, and the environment-friendly efficient waste incinerator is suitable for waste treatment in village and town communities, schools and hospitals.

The invention provided a TFT (thin film transistor) array substrate, comprising a substrate (1) and a TFT, wherein the TFT comprises a gate electrode (2), a semiconductor layer (5), a source electrode (8) and a drain electrode (9), an adjacent layer of the semiconductor (5) is in a structure of a composite layer, the structure of the composite layer comprises a protective layer and an insulating layer, the protective layer can prevent the semiconductor layer (5) from losing oxygen, is made from an insulating material and is in contact with the semiconductor layer (5), and the insulating layer is made from an easily etching insulating material. The TFT array substrate can improve the stability of the TFT and is also suitable for large-batch production.

The invention discloses a continuous aerobic composting device and a disposal method for dead livestock and poultry on a livestock and poultry farm and belongs to the field of hazardous waste harmless utilization and recycling. The continuous aerobic composting device comprises a crushing device, a fermentation tank body and a main shaft driving device, wherein a feed opening is formed in the top of the fermentation tank body, a discharge opening is formed in the bottom of the fermentation tank body, and a bushing with leak holes is arranged at the inner lower part of the fermentation tank body; a main shaft is arranged in the fermentation tank body, and stirring blades are arranged on the main shaft; the lower end of the main shaft extends out of the bottom of the fermentation tank body and then is connected with the main shaft driving device; a feeding device is arranged on the outer side of the fermentation tank body; the crushing device is connected with the feed opening of the fermentation tank body by the feeding device. The continuous aerobic composting device can realize continuous automatic aerobic composting of dead livestock and poultry, is low in energy consumption and free of secondary pollution, realizes recycling of harmful wastes, is uniform in air distribution, avoids local oxygen deficit, and has the advantages of being low in cost, accurate in parameter control, sufficient in fermentation, high in degree of automation and the like.

The invention relates to the field of sleep healthcare articles and discloses a sleep device with a function of automatic cervical vertebrae balance. The sleep device comprises a balancer, a sensor and a central processing unit. The central processing unit comprises a central information processor and an air pressure processor, the central information processor is connected with the air pressure processor through an information wire, and the sensor is used for collecting information of a sleeper and feeding back timely. The air pressure processor comprises a silent motor, an air pressure venturi and a 'valve' system, the silent motor is connected with the balancer through the air pressure venturi, and the 'valve' system is arranged at an access port of the air pressure venturi. The sleep device is capable of detecting sleeping postures of the sleeper by the aid of the sensor and feeding back to the central information process, the balancer is adjusted by the air pressure processor to enable the sleeper to be in a posture that the head and the cervical vertebrae are most balanced, under the lowest pressure, lowest in torsion and best accordant to human physiological curvature for a long time, the relation between the head and the cervical vertebrae can be kept beneficial to sleeping so as to realize deeper and longer sleep.

The invention discloses a method and device for treating organic solid waste. The method comprises the steps: (a) carrying out physico-chemical pretreatment, namely adding water and additives into the waste, and heating and stirring; (b) carrying out hydrolysis, namely carrying out thermal hydrolysis and acid hydrolysis on the waste which is subjected to physico-chemical pretreatment, so as to obtain a hydrolyzate; (c) carrying out oxidization, namely oxidizing the hydrolyzate, so as to obtain an oxidization product; and (d) carrying out solid-liquid separation namely carrying out solid-liquid separation on the oxidization product, so as to obtain a solid oxidization product and a liquid oxidization product.

The invention provides a lower jaw supporter, which solves the problem that can not be solved in the prior art; the problem is upper airway obstruction (snoring) of non-trachea cannula general anesthesia patients and unconscious patients including patients of coma, alcoholic intoxication, toxicosis and the like. The technique proposal is that the lower jaw supporter comprises a tie plate and movable supports which are arranged at the left and the right sides of the tie plate; and the upper end of the movable support is provided with a lower jaw angle fixed disk which is adaptive to the shape of lower jaw angle. The left and right positions and the height of the movable support can be adjusted. The lower jaw supporter completely relieves hands of anaesthetists or nurses who need to use hands to support lower jaws for a long time, and provides a device specially used for supporting the lower jaw loose of general anesthesia non-trachea cannula patients; and the device mainly prevents or avoids the upper airway obstruction of the patients caused by the wallowing of tongues so as to disarm the risks of chronic oxygen deficiency of body and accumulation of carbon dioxygen caused by that the upper airways of the patients are blocked or stopped.

The invention discloses an in-car air conditioning system and aims to provide the in-car air conditioning system which is high in safety and comprehensive in function. The in-car air conditioning system comprises a controller, a fan, a pipeline, an oxygen sensor, a window and door detector, an alarm device and a human body inductor, wherein the fan, the pipeline, the oxygen sensor, the window and door detector, the alarm device and the human body inductor are respectively and electrically connected with the controller; the pipeline is connected with the interior and the exterior of a car; and the fan is arranged in the pipeline. After the system starts working, whether a person is in the car or not is detected by the human body inductor. If the human body detector detects no person, whether car doors and car windows are closed or not is detected through the door and window detector, and if the car doors or the car windows are not closed, an alarm is given through the alarm device after the time reaches a threshold value. If the human body detector detects that the person is in the car, oxygen concentration in the car is detected through the oxygen sensor. When the oxygen sensor detects that oxygen concentration in the car is lower than the threshold value, the fan is started by the controller to suck the air outside the car into the car to realize an outside loop to supplement the oxygen content in the car, and therefore, oxygen deficit or suffocation accident is avoided occurring.

The invention discloses a device for preventing a child from being mistakenly locked in a vehicle. The device comprises a gravity sensor and an electronic control unit, wherein the gravity sensor is arranged under a passenger seat inside the vehicle; the electronic control unit is connected with the gravity sensor; the electronic control unit enters a working state after the vehicle is flamed out and is in a locking state, scans the gravity sensor according to the preset standard gravity value so as to monitor the gravity change value and judges whether the child is detained in the vehicle or not according to the gravity change value; and if yes, the electronic control unit controls the vehicle to send out alarm information, controls a door of the vehicle to be unlocked and controls window glass of the vehicle to be descended according to the preset time sequence. According to the device for preventing the child from being mistakenly locked in the vehicle, whether the child is detained in the vehicle or not is judged by monitoring the gravity change value; if yes, the vehicle is controlled to send out the alarm information, the door of the vehicle is controlled to be unlocked, and the window glass of the vehicle is controlled to be descended in sequence; and accordingly the child who is mistakenly locked in the vehicle is effectively protected. The invention further discloses a method for preventing the child from being mistakenly locked in the vehicle and the vehicle.

The invention discloses a functional beverage, a solid beverage and a preparation method thereof. The functional material, per 1000 parts by weight, is prepared from, by weight, 0.1-30 parts of ginseng, 0.1-30 parts of fructus lycii, 0.1-30 parts of maca, 0.1-30 parts of rhizoma polygonati, 0.1-30 parts of semen cassiae, 0.1-30 parts of flos chrysanthemi, 0.01-30 parts of cordyceps militaris and the balance water. The functional beverage and the solid beverage have advantages that by reasonable matching of ginseng, fructus lycii, maca, rhizoma polygonati, semen cassiae, flos chrysanthemi and cordyceps militaris, components are in synergistic promotion to jointly realize dual efficacies of physical fatigue relief and eye strain relief; since the formulation components are all natural plant materials, adverse side effects are avoided, and the functional beverage and the solid beverage are suitable for long-term consumption.

The invention discloses a fresh air purification all-in-one machine, which comprises a casing, an indoor air return inlet, an outdoor fresh air inlet, a fresh air supply opening, an indoor air return exhaust opening and a power supply control device, wherein the power supply control device is arranged in the casing; a primary filter, a heat exchange core body, an exhaust machine, a secondary filter, an ion cloud dust removal module, an air supply machine and a tertiary filter are sequentially arranged in the casing; the exhaust machine, the ion cloud dust removal module and the air supplying machine are respectively and electrically connected with the power supply control device. The outdoor air and the indoor air are simultaneously introduced into a purifier; the air circulation is realized; the indoor air quality is improved; in addition, the ventilation and the air purification function are integrated; the plug-and-use effect is achieved; the problems of installation and repair difficulty and house structure damage by pipelines installing are solved; the ion cloud generating device can ionize outdoor air to generate negative ions; dust is adsorbed onto a dust collecting plate after being charged. The fresh air purification all-in-one machine has the advantages that the negative ion generating quantity is great; the conveyance distance is long; the dust removal and sterilization effects are good; in addition, no ozone is generated in the work process; the environment is protected; health is realized.

The invention discloses a hot compress sticker for improving microcirculation. The heating material of the hot compress sticker is prepared from far infrared ceramic powder, magnet powder, negative ion powder, pepper, mint, camphor, borneol and heat sensitizer. According to the hot compress sticker for improving microcirculation, heat produced can be stabilized at 40-50 DEG C, the lasting time is 16-20 h, and the hot compress sticker can be continuously and repeatedly used for 2-6 months, will not cause body burning heat sensation if being used for a long time, and can promote body local blood circulation, prevent histanoxia, relieve local organ and tissue pain, and effectively treat various kinds of muscular soreness, cervical spondylosis, shoulder joint and scapulohumeral periarthritis and the like. In addition, due to the fact that the far infrared ceramic powder, the magnet powder and other traditional Chinese medicine raw materials are adopted in the hot compress sticker, the additional magnet therapy effect and medicine treatment effect are obtained, and the hot compress sticker has the good treatment effect on female breast diseases, endocrine disorder, cold in uterus, insomnia and the like.

The invention discloses a portable air purifier for resisting haze. The portable air purifier comprises a breathing mask, air filtering devices, an air inlet rhinobyon protection sleeve and an air supply mechanism. The upper end of the breathing mask is connected with the air supply mechanism through a telescopic mechanism. The air supply mechanism comprises an air supply chamber and a driving mechanism arranged in the air supply chamber. The breathing mask is communicated with an inner cavity of a power chamber through a first corrugated pipe, and the pipe diameter of the first corrugated pipe. The air filtering devices are symmetrically arranged at the upper ends of the left side and the right side of the air supply chamber. According to the portable air purifier for resisting haze, thephenomenon that redundant air exists in the breathing mask, and consequently a wearer feels stuffy and damp is avoided, and the phenomenon that the oxygen demand of the wearer is increased in the movement process, and consequently the wearer has difficulty in breathing, and anoxia appears is avoided. Meanwhile, Chinese herbal medicine can be placed in a traditional Chinese medicine box, purified air is absorbed by the human body under the action of the traditional Chinese medicine to achieve the functions of clearing away the lung-heat and wetting the throat and refreshing the wearer and restoring consciousness on the wear, and the characteristics of being good in sealing effect, convenient to carry and safe to wear are achieved.

The invention discloses an underground plant factory based on the internet of things, and relates to the crossing field of internet of things and agriculture. The underground plant factory comprises an underground planting chamber, a local monitoring system, planting posts, a nutrition solution circulation system, LED lamp plates, an air circulation system, a remote monitoring system and the like.By means of the underground plant factory based on the internet of things, underground idle spaces can be fully utilized for agricultural production, the LED lamp plates are utilized to conduct illumination, since the underground has suitable temperature and is fairly mild in winter and rather cool in summer, the underground is suitable for planting multiple vegetables, and the underground plantfactory can be widely applied to idler areas like basements, underground parking lots and air-raid shelters; the plant engineering can monitor the environment information of the growth of plants in real time, and complete safe data storage, calculation and analysis of mass data, the calculation capacity and an optimization algorithm of an internet-of-things platform are applied, the optimal data for the growth of the plants is quickly generated, and modules like an air circulation module, a water circulation module and an illuminating module are reasonably driven to efficiently work.

The invention provides a running machine with an oxygen generating function. The running machine comprises a base, an armrest control seat and an oxygen generating system, and the base is fixedly connected with the armrest control seat through stand columns; the oxygen generating system comprises an air inlet device, an oxygen generating device and an air exhaust device which are sequentially connected, the oxygen generating device is arranged on the side of the base in a hung mode, the air inlet device is inlaid in the base, and the air exhaust device is inlaid in the stand columns and the armrest control seat. According to the running machine, by arranging the oxygen generating system of an integrated structure, oxygen can be provided for a running machine user to assist the body building instrument user in completing a body building plan, and therefore the anaerobic condition caused by exercise of the running machine user is effectively prevented from occurring; in addition, the running machine with the oxygen generating system has the advantages that the structure is simple and compact, an oxygen supply device is modularly designed, and the oxygen generating device is convenient to repair and maintain.

The invention relates to a brewing method of low-methanol-content Chinese date wine, and belongs to the technical field of brewing. The method includes sorting Chinese dates, cleaning, stoning, soaking with hot water, pulping, adding pectin esterase and cellulase, performing enzymatic hydrolysis, stirring and cooking in an air-lift combined mechanical manner, centrifuging, separating supernatant, adjusting the supernatant with white sugar and citric acid, sterilizing, inoculating, fermenting, clarifying, filtering, adding a clarifying agent, and aging by using an oak barrel. The method degrades cell walls of fruit tissues by using the pectin esterase and the cellulase, degrades polysaccharides to allow effective components inside the Chinese dates to dissolve out, and increases the content of juice nutrients and the juice yield. Through stirring and cooking in the air-lift combined mechanical manner, methanol produced by pectin substance zymolysis through the pectin esterase and methanol produced by other reasons are separated along with stirring, cooking and high-pressure air blowing, thus reducing the methanol content in Chinese date juice pulp.

The invention provides a mobile multifunctional steaming and showering room which comprises a room body and a shower nozzle arranged inside the room body. The room body is a closed space formed by a ceiling, walls on four sides and a floor; a door and a control system are arranged on one wall; each wall is composed of a heat-insulating layer, a heating layer and a heat-conducting layer from outside to inside; a heat-conducting groove used for containing the corresponding heating layer is formed in each heat-insulating layer; an opening of each heat-conducting groove is sealed by using the corresponding head-conducting layer; each heat-insulating layer is formed by compositing an SMC board, a tung wood board and a carbonized reconsolidated bamboo floor; each heating layer is a far infrared carbon fiber heating board; and each heat-conducting layer is a metal heat-conducting piece. Through material improvement, waterproof, mildewproof and electric leakage preventive performances of the room are improved; steaming and showering can be performed in a same space; the service life of the room is prolonged; the temperature and humidity in the room can be adjusted conveniently when the room is in use; and far infrared rays good for human health can be released.

The invention relates to a vortex type live shrimp conveying device, which is characterized in that: the device is provided with a circular water tank made of a high-density polyethylene material; a circular partition plate is arranged on the lower part in the circular water tank; a plurality of circular holes are formed on the partition plate; a water outlet pipe is arranged below the partition plate in the water tank; one end of the water outlet pipe is sealed, and the other end of the water outlet pipe extends out of the water tank and is communicated with a water inlet of an external frequency conversion water suction pump; a plurality of circular holes are formed on the pipe wall, which is close to the sealed end, of the water outlet pipe; on one side, which is connected with the water pump, of the water tank, a vertical circular water inlet pipe is attached to the inner wall of the water tank tightly; the top end of the vertical circular water inlet pipe is communicated with a water outlet pipe of the frequency conversion water pump on the outer part of the water tank by a 'U'-shaped connection pipe, and the bottom end of the vertical circular water inlet pipe is connected with the partition plate in the water tank; and the tail end of the circular water inlet pipe is sealed, and small circular holes which are arranged linearly are formed on a pipe body. Due to the design of the vortex type live shrimp conveying device, individual live shrimps can be prevented from being damaged in the conveying process effectively, the death rate is reduced, water quality also can be purified, and the long-distance conveying of the live shrimps is facilitated. Simultaneously, the vortex type live shrimp conveying device has a stable structure and is easy to manufacture and low in cost, and raw materials are readily available.

The invention provides fitness equipment and an oxygen generating system thereof. The fitness equipment comprises a fitness device and the oxygen generating system. The oxygen generating system is connected with the fitness device, the fitness device is a fitness exercise device for fitness equipment users, and the oxygen generating system is used for providing oxygen for the fitness equipment users; the oxygen generating system comprises a gas inlet device, an oxygen generating device and an exhaust device; the gas inlet device, the oxygen generating device and the exhaust device are sequentially connected with one another. The fitness equipment and the oxygen generating system in an embodiment of the invention have the advantages that the oxygen can be provided for the fitness equipment users by the oxygen generating system with an integral structure, so that the fitness equipment users can be assisted to complete fitness plans, and oxygen deficiency conditions of the fitness equipment users due to exercise can be effectively prevented; the fitness equipment with the oxygen generating system is simple and compact in structure, an oxygen supply device is in a modular design, and accordingly the oxygen generating device is convenient to repair and maintain.

The invention provides body building equipment and an oxygen generation system and oxygen generation device thereof. The oxygen generation device comprises a shell and an air compressor and an oxygen separator which are arranged in the shell, the two opposite side faces of the shell are each provided with an opening, the opening formed in one side is formed to be aligned with the air compressor and provided with a heat dissipation fan used for exhausting hot air in the shell of the oxygen generation device, and the opening formed in the other side is used for allowing cooling air to enter the oxygen generation device; the air inlet end of the air compressor is used for sucking air, the air outlet end of the air compressor is communicated with the oxygen separator, air is compressed by the air compressor and then enters the oxygen separator, and the oxygen separator separates out oxygen in the air. According to the oxygen generation device, all the functional units are orderly arranged in the shell, and when the oxygen generation device is failed, functional unit accessories are easy to replace and maintain, and a fault is convenient to remove.

The invention discloses a colloidal particle controlled targeted pneumatic atomizing administration device, which is characterized by comprising a liquid medicine box (1), an atomizing box (2) and a box cover (3), wherein a nozzle (4) is arranged on the lower part of an inner cavity of the liquid medicine box (1); an air inlet end of the nozzle (4) is connected with an air inlet guide pipe (5); an air outlet end of the nozzle (4) is inserted into a mixed flow pipe (6) on the lower part of the atomizing box (2) and is opposite to a slide block (7); the slide block (7) is arranged in the atomizing box (2) and a slide block cavity (8) on the upper part of the mixed flow pipe (6); the slide block cavity (8) is communicated with an inner cavity of the atomizing box (2); the upper part of the inner cavity of the atomizing box (2) is communicated with the inner cavity of the liquid medicine box (1); the upper part of the liquid medicine box (1) is connected with an atomized colloidal particle nozzle (9) which is communicated with the inner cavity of the liquid medicine box (1); the slide block (7) is connected with a regulating block (11) through a rigid connecting rod (10); and the regulating block (11) is arranged in a guide groove (12) on the liquid medicine box (1). Air or oxygen serving as atomizing power has no dependence on power supply, and the device has the advantages of small atomized liquid volume, small administration amount, high atomized medicine concentration and controlled atomized particles.

The invention discloses a planting method of cherries. The planting method comprises the following steps: 1, land selection; 2, land finishing; 3, planting; 4, flood control management: keeping the moisture content of a cherry plant at about 70 percent during flood control management, digging 5 radial ditches with the width of 15 cm in soil ridges around a tree trunk serving as a center, putting super absorbent polymer with water absorption capacity reaching 400 times into the radial ditches, and adjusting the mass of the super absorbent polymer used according to the scale of rainfall; 5, shaping and trimming; 6, flower and fruit retention; 7, pest and disease prevention and treatment. In case of flood or heavy rainstorm, the super absorbent polymer can absorb water accumulated in the soil, so that the phenomenon that roots of cherry trees are rotted to die or gum of the cherry trees is rotted to die because of oxygen deficit due to the fact that the soil is lack of oxygen as excessive water is accumulated in the soil is avoided; with the water retention property, the super absorbent polymer can slowly release the water in the resin, so that the soil at the roots of the cherry plants can keep proper growing humidity.

Relating to the technical field of water environment improvement and repair in aquaculture, the invention provides a compound bacillus subtilis sustained-release tablet, which comprises, by weight: 2-9% of bacillus subtilis raw powder, 73-96% of sodium percarbonate, 1-10% of a sustained release agent, and 1-8% of a stabilizer. The invention aims to provide the compound bacillus subtilis sustained-release tablet. The product has a significant improvement effect on the culture water environment, is convenient to use, and avoids the problem of culture water oxygen deficiency.

The invention relates to the field of the preparative technology of ferroelectric films and devices and in particular relates to a preparation method of a bismuth titanate (BT) ferroelectric film. Solution modification and ultraviolet radiation are combined to reduce the sintering temperature of the film to be below 500 DEG C, the defects that the existing bismuth titanate ferroelectric film has high sintering temperature and the Bi element can be volatized easily are overcome and the purpose of compatibility with a Si integration circuit is achieved. The preparation method comprises the following steps: (1) preparing precursor solution; (2) preparing a BT gel film; (3) carrying out pretreatment on the BT gel film; and (4) performing ultimate treatment on a BT precursor film.

The invention discloses a safety automobile air-conditioning system and a working method thereof. The safety automobile air-conditioning system comprises a vehicle control unit and an air-conditioning control unit, and further comprises an air oxygen content sensor, a vehicle speed sensor as well as an air quality sensor, a chair pressure sensor and an oxygen generation device, wherein the air oxygen content sensor and the vehicle speed sensor are respectively connected with the vehicle control unit; the air quality sensor, the chair pressure sensor and the oxygen generation device are connected with the air-conditioning control unit; the working method of the air-conditioning system comprises the following steps: switching an air-conditioner into an external circulation mode, introducing outer circulation air into a vehicle, detecting the air quality of the outer circulation air by using the air quality sensor, if the air quality of the outer circulation air is not qualified, switching the air-conditioner into an internal circulation mode, and powering on the oxygen generation device at the same time, so as to compensate oxygen into the vehicle. By adopting the safety automobile air-conditioning system, people inside the vehicle can be prevented from anoxia, and constant good air quality inside the vehicle can be ensured.

The invention discloses energy-saving and high-efficiency ventilation oxygen supply equipment for a bathroom. The equipment comprises a cabinet body, the side wall of the cabinet body is provided witha vent hole, the inner wall of the vent hole is rotationally connected with a plurality of fan blades through a rotating shaft, the lower end of the cabinet body is provided with a U-shaped cavity, the middle of the horizontal inner wall of the U-shaped cavity is fixedly connected with a partition plate, the vertical inner wall of the U-shaped cavity is connected with a sliding plate and a magnetic plate in a sealing and sliding manner, and the lower ends of the sliding plate and the magnetic plate are fixedly connected with the inner wall of the U-shaped cavity through springs. According tothe equipment, the sliding plate and the magnetic plate continuously slide vertically on the inner wall of the U-shaped cavity through heat absorption and expansion of expansion liquid, so that the fan blades are driven to continuously rotate to exchange indoor air, the sliding plate drives a liquid suction bag to continuously expand and contract when the sliding plate slides vertically in the inner wall of the U-shaped cavity, hydrogen peroxide in a liquid storage cavity is continuously pumped into an arc-shaped cavity, the hydrogen peroxide is decomposed into water and oxygen, the generatedoxygen is discharged through an air outlet hole, the oxygen is supplied to a room, and the phenomenon of oxygen deficiency in the bathroom is avoided.

A process for growing the lithium niobate monocrystal with near stoichiometric ratio by crucible lowering method includes putting orientational seed crystal in crucible, proportionally mixing Li2CO3 with Nb2O5, die pressing, putting it in said crucible, closing its cover, heating to 1160-1200 deg.C in resistance furnace to smelt and holding the temp for 2-6 hr, lowering the crucible at 0.1-1 mm / hr of speed to grow crystal, and cooling. Its advantages are simple equipment, large size and low cost.