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48results about How to "Excellent cost" patented technology

Water chilling unit applying natural cooling technology

The present invention provides a cold water unit applying technology of natural cooling and relates to the technical field of refrigeration. In order to improve the operation efficiency of the existing unit adopting proposal of a dry cooling machine and save the operation cost, the present invention provides a cold water unit applying technology of the natural cooling, which comprises an additionally arranged heat exchanging loop. A heat exchanger used for the heat exchanging between cooling medium and secondary refrigerant is in series connected inside a chamber of a cooling loop of a dry cooling device. The heat exchanging loop is controlled by a tee automatic adjusting valve. When the temperature of the cooling medium is less that of the secondary refrigerant, a valve is opened and the secondary refrigerant is directly cooled by the cooling medium. The present invention has more natural cooling quantity when the outdoor temperature is less. When the outdoor temperature is less enough, all the refrigeration needs can be undertaken by the temperature of the cooling medium. The present invention has the characteristics of high reliability of the operation, simple assembling and easy maintenance, and the comprehensive efficiency and integrated cost is even better than that of the air-cooling direct evaporation type unit.
Owner:AIRSYS REFRIGERATION ENG TECH BEIJING

Multi-metal MOFs derived oxygen reduction/oxygen evolution double-function catalytic material, and preparation method thereof

The invention discloses a multi-metal MOFs derived oxygen reduction/oxygen evolution double-function catalytic material, and a preparation method thereof. The preparation method comprises following steps: room temperature coprecipitation is adopted to synthesis a Zn/Co/Fe multi-metal ZIF precursor; then sulfuration and sintering treatment technology is adopted for combination of oxygen reduction reaction (ORR) active sites (Co/Fe-N-C) and oxygen evolution reaction (OER) active sites (Co/Fe-S) on a monomer material, so that the double ORR/OER electrocatalyst which is low in cost and possesses the performance as good as that of commercially available catalysts is obtained. According to the preparation method, two important factors, including active site distribution and catalytic mechanism,with great influences on material performance are taken into comprehensive consideration, realization of the optimal material catalytic oxidation reduction/oxygen evolution reaction efficiency is taken as a design principle, optimization design is adopted to obtain the best Zn/Co/Fe ratio in the precursor, and the catalyst is provided with the best catalytic performance. The multi-metal MOFs derived oxygen reduction/oxygen evolution double-function catalytic material possesses both high efficiency oxygen reduction and oxygen evolution performance, is high in specific surface area, is abundantin micropores, and is uniform in active site dispersion; and the cost is much lower than that of commercially available precious metal catalyst catalytic materials.
Owner:XI AN JIAOTONG UNIV

Pile and net separated large-scale shallow sea purse net culture device

The invention provides a pile and net separated large-scale shallow sea purse net culture device. The culture device comprises a purse net, an assistant floating ball connected to the surface of the purse net and a column pile connected with the purse net, wherein the top end of the purse net is connected with the column pile, a fixing pile and a sinking block are connected to the bottom of the purse net, the assistant floating ball on the surface of the purse net is connected with a main floating ball, and the main floating ball is connected with an anchor pile. By adopting the column pile and purse net separated structure, direct stress on the net in water under the action of waves and tides can be well reduced, and the flexibility of the purse net can be fully exerted; the bottom end of the purse net is tightly attached to the sea bed through the fixing pile and the sinking block, cultured fishes can be effectively prevented from escaping, and the manufacturing cost of the culture device is reduced; stress on the purse net in the water is further regulated through the main floating ball and the assistant floating ball, the flexibility of the purse net is exerted to the greatest degree, and thus the culture device can adapt to the harsh and complex marine environment.
Owner:ZHEJIANG OCEAN UNIV

Preparation method for special-shaped gold nanocrystals and application on detection of tripolycyanamide by using surface enhanced Raman scattering

The invention belongs to the field of chemical engineering, and provides a preparation method for special-shaped gold nanocrystals and application on detection of tripolycyanamide by using surface enhanced Raman scattering. The preparation method comprises the following steps of preparing gold by using trisodium citrate as a stabilizer; using hexadecyl trimethyl ammonium bromide, a chloroauric acid, silver-bearing salt liquor and an ascorbic acid as growth-promoting media; preparing nanogold by using an organic acid as an additive; and performing resolution after centrifugal separation. The special-shaped gold nanocrystals are used for detecting Raman spectra of standard liquor or sample liquor of the tripolycyanamide. The nanogold is prepared by using a seed induction multi-step growing method, an additive containing benzene ring is added in the nanogold, and the use level of the hexadecyl trimethyl ammonium bromide is reduced, so that the cost is obviously reduced, and purification time and purification steps are reduced. The prepared nanogold has an angular structure, and can be used for detecting an enhancement substrate of trace tripolycayanamide by using surface enhanced Raman scattering; and compared with an HPLC (high performance liquid chromatography) method, the nanogold has the advantages that the analyzing time is short, the cost and the reproducibility are high, and the nanogold can be widely applied to quickly detecting the tripolycyanamide in dairy products.
Owner:JIANGNAN UNIV

Conductive heating composite sheet made from conductive heating adhesive film, preparation method thereof, and product made from composite sheet

The invention relates to a conductive heating composite sheet made from a conductive heating adhesive film, a preparation method thereof, and a product made from the composite sheet. The preparation method comprises the steps of fully mixing a conductive heating filler, a polyethylene resin, an ethylene copolymer, a dispersant and an antioxidant in a mixing device to obtain a copolymer of the above materials; granulating the obtained copolymer in a granulation apparatus to obtain resin particles; and putting the obtained resin particles into a film forming apparatus to obtain a conductive heating adhesive film. The prepared conductive heating adhesive film is used for adhering one or more of the materials including a plywood, a wood veneer, a bamboo veneer, a cement fiberboard, a ceramic tile, glass, a natural stone and a metal composite plate into a conductive heating composite sheet having a conductive heating function. According to the invention, the conductive heating composite sheet and the product thereof are not only safe to use and capable of long-term even heating, but can also meet the requirements for the development of various industry products, such as electric heating building materials, household appliances, equipment shields, antifreeze equipment and the like.
Owner:NANJING GREEN WOOD CO LTD

Layer-by-layer-self-assembling small-caliber tissue engineering blood vessel and establishing method thereof

The invention relates to a layer-by-layer-self-assembling small-caliber tissue engineering blood vessel and an establishing method thereof. The method mainly comprises the steps that chitosan / beta-cyclodextrin nano slow-release particles are established, and wrapping endothelial progenitor cells are mobilized to capture molecules; natural biological materials or artificial synthetic materials are knitted into artificial blood vessels in an electric spinning method, or decellularization homologous or heterogeneous blood vessels are used; and tissue engineering blood vessel surface modification is carried out, and a layer-by-layer-self-assembling mode is used for modifying molecule nano particles captured and mobilized by wrapping adenosine, receptor stimulant thereof and the like to a biology artificial blood vessel support. The artificial blood vessel can be established conveniently, releasing of medicine can be effectively controlled, medicine sudden releasing can be lowered, and meanwhile good mechanical property and clinic practicability are achieved. Blood vessels of any caliber can be established, and in-vivo induced circulation blood endothelial progenitor cells mobilization and homing can be carried out. Artificial blood vessel endothelialization can be promoted quickly, and meanwhile hemadostenosis and blocking caused by smooth muscle cell pathologic proliferation can be restrained for a long time.
Owner:广州宏畅生物科技有限公司

Repairable fountain code design method for unequal local domains

InactiveCN109756873AReduce communication energy overheadSolve communication overhead imbalanceError preventionNetwork traffic/resource managementNetwork modelMacro base stations
The invention discloses a repairable fountain code design method for unequal local domains, which is suitable for equipment cache downloading and data restoration of a hierarchical heterogeneous D2D network, and constructs a hierarchical heterogeneous D2D distributed storage network model based on a macro base station BS, a micro base station MBS and mobile equipment. an energy overhead formula ofdata downloading and data restoration is deduced through the model, and an unequal locality repairable fountain code and a data restoration strategy thereof suitable for a hierarchical heterogeneousstorage network are designed; When it is detected that the storage nodes leave the area, data in the leaving storage nodes are restored and stored to new storage nodes in the area on the basis of an energy overhead formula and the non-equal locality repairable fountain codes, and therefore data downloading requests and system availability of other devices are guaranteed. According to the method, the communication overhead of data downloading and repairing can be reduced, and the problems of unbalanced communication overhead and energy consumption waste caused by an existing D2D distributed storage network are solved.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Environmentally-friendly prismatic stripping-difficult corrugated carton

The invention discloses an environmentally-friendly prismatic stripping-difficult corrugated carton which comprises a carton body consisting of corrugated boards, wherein each corrugated board is formed by adhering case board paper with corrugated paper through an adhesive; a preparation method of the adhesive comprises the following steps: uniformly placing corn starch into a product case, performing aerobic irradiation by applying gamma ray radiated from a 60Co radiation source through a dynamic irradiation mode, then taking out the irradiated starch, uniformly stirring and mixing the starch, adding water, and stirring and dispersing the mixer into starch paste; slowly adding PVA into water, stirring the PVA at 90 DEG C in a heat preservation manner till the PVA is completely dissolved,cooling to 60 DEG C, and adding an initiator for stirring reaction for 20 to 40 min, so as to obtain a PVA glue liquid; uniformly mixing the starch paste with the PVA glue liquid, then adding a boraxsolution for stirring reaction for 30 to 40 min, adjusting the pH value of the composite glue liquid to 6 to 7 by using a sodium hydroxide solution, and continuously enabling the solution to react for1 to 2 h, so as to obtain the environmentally-friendly adhesive. According to the environmentally-friendly prismatic stripping-difficult corrugated carton, through the adoption of the gamma-ray modified starch, the process is easy to operate, and modification is easy to control; the product quality is higher than that of chemically modified starch, and the cost is lower than that of the chemically modified starch.
Owner:CHUZHOU CIGARETTE MATERIALS FACTORY

Telescopic lock pin mechanism and automobile seat assembly

The invention provides a telescopic lock pin mechanism and an automobile seat assembly. The lock pin mechanism comprises a framework vertically extending, a lock pin horizontally arranged in a hole, a spring, a rotating shaft, a limiting shaft and a pull lock assembly. The framework is provided with the hole and a rotating shaft support. The lock pin is fixed to the framework through a fixing sleeve. The spring is clamped between a flange of the lock pin and the fixing sleeve. The rotating shaft and the limiting shaft are assembled on the rotating shaft support. A connector and a wedge-shaped stop block are arranged at the two ends of the pull lock assembly respectively. The connector is connected with a connecting rod of the lock pin. The wedge-shaped stop block is fixed to the rotating shaft support of the framework. The limiting shaft can do reciprocating arc movement in an arc hole relative to the rotating shaft, and the telescopic movement of the lock pin in the hole is achieved through cooperation of the limiting shaft and the wedge-shaped stop block. According to the telescopic lock pin mechanism, the defect that in the prior art, due to the exposure of a lock pin, passengers are accidentally injured is overcome. Meanwhile, the appearance, weight and cost of the lock pin mechanism are all superior to those of other lock pin mechanisms.
Owner:YANFENG ADIENT SEATING CO LTD

Modularization splicing type purification house wall body structure

InactiveCN103255855AMeet the quick build requirementsCutting costsWallsBuilding construction
The invention discloses a modularization splicing type purification house wall body structure and belongs to the technical field of building components. The modularization splicing type purification house wall body structure comprises wall body units, a set of frame body connecting mechanisms and clearance shielding mechanisms. A reinforcing frame body is combined on each of the upper edge portion and the lower edge portion in the length direction of each wall body unit in an embedding mode. A wall body unit connecting frame body is combined on each of one side edge portion and the other side edge portion in the height direction of each wall body unit in an embedding mode. The frame body connecting mechanisms are distributed at intervals and are connected between the wall body unit connecting frame bodies on adjacent wall body units. The clearance shielding mechanisms are matched in an embedding mode with the wall body unit connecting frame bodies on the adjacent wall body units on two sides corresponding to the frame body connecting mechanisms. The modularization splicing type purification house wall body structure has the advantages that quick constructing requirements during construction are met, cost is saved, great modularization splicing effect is achieved, constructing efficiency is high, repeated using effect is good, resources are saved, and whole effect is ideal.
Owner:SUZHOU FLEXCON CLEAN ROOM SYST

Whey food processed from cereals harvested at grain filling later stage at high-quality air, kept fresh at high-quality air and eaten at high-quality air

The invention relates to a whey food processed from cereals harvested at a grain filling later stage at high-quality air, kept fresh at high-quality air and eaten at high-quality air. The outmoded custom that humans eat and store withered food grains is changed, the whey food has great significance but is very simple, as long as crops are harvested during the period from the time that the crops grow to a grain filling stage to the time before plants begin to decline, the harvested rice ears, harvested wheat ears, corn sticks and the like are directly conveyed into a food production line, a fresh tender whole-juice grain-fragrance whey food is processed, then sealed packaging is performed, the whole course is performed under the ultracleaned, disinfected and sterilized condition, and then the products are conveyed into a ground-temperature water molecule atomized modified-atmosphere fresh-keeping storage warehouse only using natural resources; even if the products are stored for 2-3 years, the products are still high-nutrition fresh tender delicious foods when being sold to the market; and if people can have a meal in a house with a high-quality air central air conditioner only using natural resources, the people do not need to worry about getting ill after eating. On rainy days during a brief harvest season, the quality and the processing of the products are not influenced when the cereals are harvested with water. The trouble of living at the mercy of natural condition is avoided, threshing, drying and a processing course of rice and flour plants, which are time-consuming and money-consuming, are omitted, and the time that the crops occupy land is saved by several days to tens of days. The problems that grain reserves are deteriorated to generate loss and high subsidy is needed are completely solved.
Owner:王虹
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