329 results about "Cellular respiration" patented technology

This invention relates to in vitro cell culture employing a fibrin network in a flexible gas permeable container. Specifically, the invention is directed to a cell culture container comprising a flexible, gas permeable material with fibrin matrix which is conducive to the culture of anchorage dependent cells, and the container is suitable for use in closed system in vitro cell culture. The gas permeability of the container is sufficient to permit cellular respiration.

Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy / efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.

A method for storing respiring produce, particularly bananas, during ripening is disclosed. The method allows bananas to remain in the ripened condition for an extended period of time while, at the same time, having improved sweetness and taste characteristics. In this method, during ripening, the produce is maintained in a gas medium which comprises oxygen and carbon dioxide and has the following characteristics: PR=ratio of oxygen to carbon dioxide=(20.94−B) / C=from about 1.8 to about 3.8; wherein B is the percentage (by weight) of oxygen in the gas medium and C is the percentage (by weight) of carbon dioxide is the gas medium, and the percentage (by weight) of oxygen (in the gas medium) is from about 1.0 to about 6.0, and the percentage (by weight) of carbon dioxide in the gas medium is from about 3.0 to about 10.0

The invention provides a cold storage and refrigerating device comprising a gas membrane assembly and a proton exchange membrane assembly. The gas membrane assembly is used for discharging oxygen in air from an air conditioning space, so that nitrogen-rich and oxygen-depleted gas atmosphere in favor of food preservation is obtained in the space, and the aerobic respiration strength of fruits and vegetables in the gas atmosphere is reduced through reducing the oxygen content in the fruit-vegetable storage space; at the same time, the basic respiration is ensured, and the anaerobic respiration of the fruits and vegetables is prevented, so that the purpose of long-term preservation of the fruits and vegetables is achieved. The proton exchange membrane assembly can be used for conveying moisture in the air outside the air conditioning space into the space through electrolytic reaction, and the humidity in the air conditioning space is kept in the proper range all the time. In the cold storage and refrigerating device provided by the invention, the proton exchange membrane assembly and the gas membrane assembly can be used coordinately, in favor of food preservation.

Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy / efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.

Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy / efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.

The invention discloses a fruit and vegetable atmosphere-controlled fresh-keeping transportation system and a control method thereof, and the oxygen content in a van body is reduced by means of direct liquid nitrogen injection; oxygen-rich gas is discharged from the airtight van body through an exhaust solenoid valve at the same time as liquid nitrogen injection so as to realize the rapid reduction of the oxygen content in the van body; a central liquid nitrogen injection atmosphere-controlled platform is adopted, and one central liquid nitrogen injection atmosphere-controlled platform can beused in multiple economical intelligent atmosphere-controlled fresh-keeping transportation vehicles; not only the oxygen reduction speed is high, but also the cost is greatly reduced; a humidifying system is installed, which controls the humidity of the van body; a drainage system is installed, which starts a drainage device by a temperature controller, timely discharges accumulated water generated during the fruit and vegetable respiration, the temperature control process and the humidification process, and reduces pathogen propagation; a ventilation system is installed, and a double fan mode is adopted; when the differences of ambient temperature, humidity and oxygen concentration in the van are large, the fans are started to reduce the temperature difference, humidity difference, and oxygen concentration difference.

The invention provides a refrigerator. The refrigerator comprises a refrigerator body, a storage container and an electrolysis deoxygenization assembly; the electrolysis deoxygenization assembly is used for consuming oxygen in air in storage space, and therefore nitrogen-rich oxygen-depleted gas atmosphere facilitating food freshness is obtained from the space. According to the gas atmosphere, thecontent of oxygen in the storage space is reduced, strength of aerobic respiration of food (specially fruits and vegetables) can be reduced, meanwhile, the foundation respiration effect is ensured, the food is prevented from performing anaerobic respiration, and the aim of long-term freshness of the food can be achieved. The electrolysis deoxygenization assembly is arranged on a back plate of therefrigerator, and the electrolysis deoxygenization assembly is arranged at the position close to an air returning opening. The electrolysis deoxygenization assembly is close to the air returning opening of the refrigerator. Due to the fact that the air returning opening is formed in the hot and cold air intersection position, humidity is large. The electrolysis deoxygenization assembly is arranged at the position, an anode plate facilitates electrolysis of water steam, the electrolysis reaction speed can be increased, and the work efficiency can be improved.

This invention is of particular use to patients with Diabetes Mellitus. It uses alkyl analogs of the methyl pyruvate (MP) family to provide energy and improve insulin and glucose homeostasis via accelerated intracellular delivery of protons and ATP from each MP. The energy upregulates cellular cross talk and networking resulting in a surge of ATP enabling NADH (via glycolysis) that enables pancreatic islet cells to obtain increased ATP allowing excess insulin manufacture. This process improves cellular respiration and expedites protein, lipid and hormone manufacture. The increased energy also enables telomeres and delays Hayflick limit. Instead of cellular repair, silence, or apoptosis, energy is allocated for cell / organ function. This invention curbs inflammation and ROS by idealizing cellular respiration and diminishing hyperglycemia. In turn a reduction of advanced glycation end products (AGEs), lessened target RNA and nucleic acid toxins, i.e., diminished HbA1c occurs. By decreased drain of cellular energy, genomic function improves.

The present invention relates to a three-stage combined pretreatment method for prolonging fresh-keeping period of putrefactive fruit and vegetable. Said method includes the following processes: according to conventional method selecting fruit and vegetable, washing and grading, controlling water content, quickly vacuum cooling so as to reduce respiration action of fruit and vegetable, utilizing high-pressure mixed gas to make water content be structured to deactivate enzyme activity of fruit and vegetable, finally applying nano silver antibacterial film to reduce putrefactive rate of fruit and vegetable so as to implement invented goal.

The invention discloses a PE composite preservative packaging membrane for modified atmosphere packaging of foods and a preparation method, which aims at providing a packaging membrane capable of adjusting the gas compositions in the pack so as to further extend the shelf life of the fresh foods. The packaging membrane is prepared through the following raw materials according to a certain weight percentage: 75 per cent to 98 per cent of polymer substrates, 1.5 per cent to 20 per cent of molecular sieves and 0.5 per cent to 5 per cent of plasticizers. By utilizing the molecular sieves as active inorganic particles, the PE composite preservative packaging membrane of the invention ensures that the membrane has favorable permeability, moisture permeability and porosity and is capable of spontaneously adjusting the gas compositions in the pack so as to suppress the respiration of the fresh foods and extend the freshness period of the fresh foods. The invention also discloses a preparation method for PE composite preservative packaging membrane and the packaging membrane prepared through the method has the advantages of uniform membrane, adjustable thickness, tear resistance, impact resistance, high heat sealing strength, simple processing technique, and convenient realization of industrialized production, etc.

The invention provides a cable joint health diagnosis and heat fault pre-warning system. The system comprises a measurement control module, a communication module, a display module, an alarming module, a temperature sensor, a humidity sensor, a gas sensor, a stress sensor, a hoop metal strap, an environmental temperature sensor, an environmental humidity sensor and a control center network server. The different sensors are combined for online monitoring of cable joints, and by a manner different from an existing manner of alarming after occurrence of faults, unhealthy statuses and operation environments of the cable joints are measured and analyzed, such as temperature, humidity, gas, smoke, expansion, breathability, environmental temperature, environmental humidity and the like, and consequently low cost is guaranteed while sensitivity and accuracy of the pre-warning system are greatly improved. Therefore, health diagnosis and heat fault pre-warning of the cable joints are realized to effectively take preventive measures, reliability in operation of the cable joints and even an electric power system is improved, cable joint fault treatment time is shortened, and economic loss caused by faults of the cable joints is greatly reduced.

The invention belongs to the field of active air-regulating agents used in storage and transportation, and particularly relates to an active air-regulating agent for an air-regulating temperature-control device. The active air-regulating agent for the air-regulating temperature-control device is characterized by comprising a carbon dioxide absorbent, a deoxidizing agent, an ethylene removal agent, a humidity control agent and a carbon dioxide releasing agent. By adopting the active air-regulating agent in the invention, influences from the proportion of nitrogen, oxygen, carbon dioxide, ethylene and the like in the gas on the storage of fruits and vegetables, and meat are reduced, and the active air-regulating agent has the effects of inhabiting the breath of cells, delaying the processes of after-ripening and aging, preventing water evaporation and restraining microbial activities; in addition, the oxide and carbon dioxide are controlled in an appropriate proportion, so that better fresh-keeping effect is achieved, and the storage and transportation of foods are facilitated.

Free radicals and reactive oxygen species have the potential to damage a wide variety of organic molecules, typically by oxidizing certain moieties. These damaging species can, for example, be produced by an organism as a by-product of cellular respiration or by the reaction of iron(II) and peroxide. The present invention includes methods of using aryl-substituted heterocyclic iron chelating compounds as antioxidants, as well as preventing the reduction of iron(III) to iron(II). In addition, the present invention provides methods of treating conditions such as inflammatory disease, neoplastic disease, and ischemic episodes.

The invention relates to a health product, in particular to a soft capsule and a method for producing the same. The soft capsule is characterized in that: the soft capsule contains water soluble pearl powder, selenium-enriched yeast, natural vitamin E, beeswax, glycerol monostearate, span-80 and corn oil. The soft capsule is a powerful antioxidant which can effectively improve the rancidity of fatty acid in food and the alimentary tract, and protect cells from being damaged by harmful matters generated by oxidation of unsaturated fatty acid; the soft capsule is an extremely good free radical scavenger which can protect biological membranes from being attacked by free radicals, effectively resist ageing nutrients, improve immunity of a human body, keep the integrity of red blood cells and promote the biological synthesis of the red blood cells; the soft capsule is an indispensible promoting factor for cellular respiration, which can protect the lung tissue from air pollution; moreover, the soft capsule also can prevent the over-aggregation of blood platelets, avoid the increase of lipid peroxidation in the blood, prevent cardiovascular diseases and supplementing calcium element in the human body.

The invention discloses a membrane isolating type oil tank which comprises a tank body, an oil inlet pipe, an oil outlet pipe and a breathing pipe, wherein the oil inlet pipe, the oil outlet pipe, andthe breathing pipe are arranged on the tank body; and is characterized in that the tank body is internally provided with at least one anti-wave clapboard vertical to an oil surface, and two sides ofthe anti-wave clapboard are both provided with a bag formed by membrane and used for isolating oil from air. As the bag formed by the membrane isolates the air from the oil, the formation of oil gas is stopped, and when respiration is generated in the tank body, both exhalation air and breathed air are clean. Therefore, the contact between oil product and the air is effectively blocked, and the generation of oil gas is reduced or even eliminated, thus protecting the environment, guaranteeing the safety of the oil product during storage and transportation, and ensuring the quality of the oil product.

The invention relates to a molecular biologic medium making method, belongs to the fields of organisms and microbes, and especially relates to a making method of a domestic fungus liquid spawn medium. The method changes the prejudice of determination of the quality of a medium through determining the particle size of the medium in physical crushing methods. Storage synthesis substances difficult to absorb are converted into decomposition state micro-molecular substances easy to absorb through the respiration effect in the seed germination process, the hydrolysis effect and other biochemical effects in the method. The method comprises the following steps: classifying various plant seeds according to nutritional components, germinating the various plant seeds under different environment conditions, adding water while certain molecular nutrition decomposition conditions are reached, beating, precipitating, drying, and packaging. The method has the advantages of facilitation of micro-molecular comprehensive and rapid absorption of nutrients in the medium without adding any substances, improvement of the quality of the medium, enlargement of the application range of the medium, and increase of the production benefit.

A water permeable sealed container for preservation of produce such as fruit, vegetables and flowers made out of three layer laminate corrugated to form, further three to five layer construct. The layers also include a layer of Kraft paper fluting and layer of polymer which is enclosed between two layers of Kraft paper. The container has a lid, which absorbs water vapor and transmits water vapor from the interior of the container to the exterior through micro perforations. The container can also regulate relative humidity within a range of 75% to 85% for some foods by removing moisture from the food generated from respiration and suppressing product decay due to microorganisms. The laminate may be die cut to be formed into a range of box designs for vertical profiles that provide ventilation spaces between containers in a vertical stack and to provide airflow channels within a stack.

The invention provides a cold storage refrigerating device and an object storage container thereof. The object storage container comprises an electrolyzing deoxygenization assembly. The electrolyzingdeoxygenization assembly is used for consuming oxygen in air in an object storing space, and rich-nitrogen and poor-oxygen gas atmosphere facilitating food freshness retaining is obtained in the space. According to the gas atmosphere, the content of the oxygen in the object storing space is reduced, the strength of aerobic respiration of foods is reduced, and meanwhile, the basic respiratory action is guaranteed. The object storage container is further provided with a water storage groove and an atomization plant which are arranged on one side of an anode plate of the electrolyzing deoxygenization assembly. The atomization plant creates a high humidity atomization environment on one side of the anode plate of the electrolyzing deoxygenization assembly so as to supply sufficient water steamto the anode plate for serving as electrolytic reactant, water steam electrolysis through the anode plate can be promoted, and the overall working efficiency of the electrolyzing deoxygenization assembly is improved.

The invention provides a cold storage refrigeration device and a storage container thereof, wherein the storage container comprises an electric deoxygenization assembly. The electric deoxygenization assembly is used for consuming oxygen of the air in the storage space, so that the nitrogen-enriched oxygen-deficient gas atmosphere can be obtained in the storage space to facilitate food fresh-keeping. According to the gas atmosphere, the content of oxygen in the storage space is reduced, the oxygen respiration intensity of the food is reduced, meanwhile, the respiration action of the foundationis ensured, and the oxygen-free respiration of the food is prevented, so that the purpose of preserving the food for a long time is achieved. In addition, the electric deoxygenization assembly is placed at the rear part of a drawer and is close to the air return opening of an air duct. The air flow at the position returns to the air duct of the refrigerator again, and the humidity of the positionis larger than the humidity of other positions of the refrigerator, so that the reaction of the electric deoxygenization assembly is facilitated. After the water gas near an electrolysis device is consumed, the air circulation of the air-cooled refrigerator is fast, the water gas at other positions can be rapidly supplemented, and the rapid reaction is maintained.

The present invention provides a method for screening a substance having a thermogenesis enhancing effect containing a compound having an effect activating PPAR δ, an agent containing the compound, and an agent having antidiabetic, antiobestic or visceral accumulated fat-lowering function.The present invention provides an agent containing a compound having an effect activating PPAR δ, which is a peroxisome proliferator activated receptor, and having effects which enhances nonshivering thermogenesis (nST), specifically enhances uncoupling respiration in mitochondria of cells in an adipose tissue or the like, or proton leak in inner membranes of mitochondria, and increases the amount of expression of UCP1, and provides an antidiabetic agent, an antiobestic gent and a visceral accumulated fat-lowering agent containing the compound. Further, the present invention provides a method for screening the compound by measuring a PPAR δ activating effect.

The invention relates to an experimental device and an experimental method for determining the soil respiration action in a drying process. The experimental device comprises a base plate, a transparent sealing cover, a silica gel drier, and a CO2 absorption bottle, and the transparent sealing cover is covered on the base plate; the center of the upper surface of the transparent sealing cover is provided with an air pumping / discharging port; the silica gel drier is suspended below the air pumping / discharging port; and the CO2 absorption bottle is arranged near the side of the base plate. The experimental method comprises the following steps of: placing experimental soil on the base plate, and filling a NaOH solution in the CO2 absorption bottle; covering the transparent sealing cover, and pumping by using a manual air pump; dripping a BaCl2 solution into the CO2 absorption bottle by using a pinhole injector; quickly taking the fixed absorption liquid and filtering, and dripping the unreacted NaOH solution by using HCL and taking phenolphthalein as an indicator; and calculating the amount of CO2 produced under the soil respiration action according to the amount of the reacted NaOH. The experimental method is easy and practicable, reduces equipment cost and is more suitable for small-scale test research of a laboratory.

The invention provides a delicate agriculture planting creating natural air conveying carbon capturing method and a structure thereof. The structure mainly consists of at least two hollow pipes and a transverse guide pipe, wherein the two hollow pipes are buried on the periphery of the root parts of plants, in addition, the top ends of the hollow pipes eminently extend to the surface of the soil, the transverse guide pipe is connected with the bottoms of the hollow pipes and communicate the hollow pipes, and in addition, a plurality of through holes with water discharge and ventilation effects are formed in the pipe wall of each hollow pipe. Therefore the air and moisture on the ground can be guided into the soil for maintaining the moisture preservation and the ventilation performance of the soil, further, the oxygen content of the soil is increased, the symbiosis of beneficial microorganisms in the soil can be favorably realized for activating the soil quantity, in addition, the benefits can be realized on the plant root breathing effect, carbon dioxide in the air can be captured and can be converted into organic carbon, nutrition prompting the plant growth can be provided, meanwhile, the root parts of the plants can be strengthened, and the resistance of the plants on plant diseases and insect pests can be improved.

The invention provides a storage device. The storage device comprises a tank body, a gas separator and an air extractor, wherein the tank body is internally provided with at least one modified atmosphere fresh-keeping space; the gas separator is provided with a modified atmosphere film and is arranged in the mode that the gas separator sucks part of air of the external environment of the gas separator into the gas separator, separates at least part of oxygen in the air out under the action of the modified atmosphere film, and then fills the modified atmosphere fresh-keeping space with the rest of air of the part of air, entering the gas separator, except of the air with the at least part of oxygen is removed; and the air extractor communicates with the gas separator. Through the storage device, nitrogen-rich and oxygen poor gas atmosphere facilitating food freshness keeping can be formed in the modified atmosphere fresh-keeping spaces, the aerobic respiration strength of fruits and vegetables is lowered by lowering the oxygen content in the fruit and vegetable storage spaces through the gas atmosphere, meanwhile, the basic respiration is ensured, and the fruits and the vegetables are prevented from anaerobic respiration, so that the purpose of fruit and vegetable long-term freshness keeping is achieved.

The invention relates to a novel supermarket vegetable fresh keeping selling device, which comprises a box body, wherein small vent holes are arranged in the box body, a small-size air conditioner and a spraying device are arranged in the box body, and support materials filled with tap water, sterilization mud or nutrient solution are underlaid at the bottom of the box body. Vegetables with treated roots are placed on the support materials so that the root parts or the stem parts of the vegetables are in contact with the tap water, the sterilization mud water or the nutrient solution, so the moisture and the nutrient consumed in the vegetable selling process because of the transpiration and the respiration are supplemented, and the goal of prolonging the preservation time of the vegetables is reached. A proper amount of potassium permanganate or calcium peroxide is added in the tap water, the sterilization mud water or the nutrient solution, the sterilization and disinfection effects can be realized, and the oxygen can be slowly released for the root aspiration. The box body and a cover are made of transparent materials, the small vent holes and windows are arranged in the box body and the cover, and the windows are convenient for ranging, placing or taking the vegetables. The temperature in the box is regulated to 16 to 20 DEG C, and the humidity is regulated to 80 to 90 percent through the regulation of the small-size air conditioner and the spraying device.

The invention provides a preservation method for fresh cut aralia elata seem through the combination of high-concentration oxygen modified atmosphere packaging and low-temperature storage. The preservation method comprises the first step of selecting, the second step of cleaning, the third step of airing, the fourth step of tidying, the fifth step of bagging, the sixth step of air exhausting, the seventh step of inflating, the eighth step of sealing and the ninth step of storing. According to the method, a high-resistance polyethylene film is adopted as a modified atmosphere packaging bag, gas of the high-concentration oxygen modified atmosphere packaging comprises, by inflating proportion, 75%-95% of oxygen and 25%-5% of carbon dioxide gas, and low-temperature storage is combined after modified atmosphere packaging. The preservation method is applied to the preservation of the fresh cut aralia elata seem, the poisonous effect generated by anaerobic respiration is obviously reduced, meanwhile, the respiration action is reduced, color changing is prevented, moisture evaporation and pest and disease damage infections are reduced, the original unique flavor and the nutrient ingredients of the aralia elata seem are maintained to the maximum, and the shelf life of the fresh cut aralia elata seem is effectively prolonged. According to the technical scheme, the rot, browning and reduction of vitamin C, total phenols and other nutrient ingredients of the fresh cut aralia elata seem are obviously restrained, the hardness and the antioxidant activity of the fresh cut aralia elata seem are improved, the fresh cut aralia elata seem has high appearance quality and sanitary quality, the preservation period of the product is prolonged to 10-12 days from 2-3 days, and the price can be increased by 2 times.

The invention discloses a microalgae medium and a method for culturing microalgae to produce hydrogen. The microalgae medium contains a basic medium and an additive, the additive is DMSO, and the adding amount of DMSO is 0.1%-2% according to a volume ratio. The method comprises the steps of: (1) constructing a microalgae aggregate; and (2) resuspending the microalgae aggregate in the microalgae medium, and performing culture under an illumination condition to produce hydrogen. According to the microalgae medium provided by the invention, a certain amount of DMSO is added into an ordinary medium, when the microalgae medium is applied in culturing microalgae to produce hydrogen, cellular respiration is enhanced, so that more layers of cells in the aggregate are in an oxygen-free environment and participate in hydrogen production, the hydrogenase activity is enhanced, and the hydrogen yield and hydrogen production rate are also effectively improved.

The invention relates to a high dissolved oxygen generation device. The high dissolved oxygen generation device comprises an oxygen tank and an air inlet pipe, and is characterized in that one end of a variable-frequency high-pressure pump or a diaphragm pump is connected with one end of a low-pressure dissolved oxygen inlet pipe, the other end of the variable-frequency high-pressure pump or the diaphragm pump is connected with a high-pressure dissolved oxygen outlet pipe extending into a pressure tank, and a flat spray nozzle is mounted at the tail end of the high-pressure dissolved oxygen outlet pipe in the pressure tank; and an ultra-micro bubble dissolved oxygen outlet pipe is arranged at the bottom of the pressure tank, one end of the ultra-micro bubble dissolved oxygen outlet pipe extends into the bottom of the pressure tank, a valve is arranged at the tail end of the other end of the ultra-micro bubble dissolved oxygen outlet pipe, and the other end of the ultra-micro bubble dissolved oxygen outlet pipe is further connected with other devices or parts. The high dissolved oxygen generating device disclosed by the invention can not only solve the problem of low oxygen dissolution efficiency of a traditional oxygen-increasing way, but also prevent oxygen from escaping due to oversaturation and improve sewage treatment efficiency; and furthermore, the endogenous respiration effect of microbes can be improved, so that the high dissolved oxygen generation device can reduce the generation of residual active sludge during sewage treatment and degrade bottom sludge in ponds, lakes and reservoirs, and further has extensive social effects and economic benefits.

Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy / efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.

The invention provides an air-adjusting preservation storage device. The air-adjusting preservation storage device comprises a box body and an oxygen removal device, wherein a first storage space is defined in the box body, and the oxygen removal device is configured to extract part of or all oxygen in air in the first storage space from the first storage space so as to obtain a nitrogen-rich and oxygen-poor gas atmosphere facilitating food preservation in the first storage space. The air-adjusting preservation storage device provided by the invention can extract oxygen in the first storage space, and the nitrogen-rich and oxygen-poor gas atmosphere facilitating food preservation is formed in the first storage space. In the gas atmosphere, the strength of aerobic respiration of fruits and vegetables is reduced by reducing the content of oxygen in the fruit and vegetable storage space, and meanwhile, the basic breathing action is ensured, and anaerobic respiration of fruits and vegetables is prevented, so that a purpose of preserving the fruits and vegetables for a long time is achieved. The air-adjusting preservation storage device provided by the invention not only is good in preserving effect, but also is low in requirements on rigidity and strength of the box body and the like, low in implementation requirement and also low in cost.