60results about How to "Easy to store at low temperature" patented technology

Hyper-concentrated liquid detergent comprises, in percentage by weight, 8-30% of anionic surfactant, 40-60% of nonionic surfactant, 5-15% of cosolvent, 0-10% of auxiliary, 0.005-1% of deflocculant, 0-0.5% of fluorescent brightener, 0-2% of detergent enzymes, 0-0.1% of preservative, 0.1-1% of essence, and the balance of water. The hyper-concentrated liquid detergent has the advantages of high solid content and high deterging effect.

The present invention discloses a compound, which comprises at least a cyclic structure and group bonding represented by a general formula I. The present invention further discloses a liquid crystal composition comprising the compound of the present invention, and a photoelectric display device containing the liquid crystal composition. According to the present invention, the compound has advantages of stable chemical property, stable physical property, good low-temperature storage property, appropriate dielectric anisotropy and appropriate refractive index anisotropy; with the application ofthe compound in liquid crystal products, the transmittance of the product can be significantly improved, and the response speed can be significantly improved; and the compound has good compatibility with other liquid crystal compounds, and has wide applicability. The formula I is defined in the specification.

The invention relates to a safety drying method and a drying device for long-term seed storage. Five steps of predrying, preheating, drying, tempering and packaging are performed to seeds to safely reduce water content of the seeds to 5-7%, and the seeds are then quickly and hermetically stored in a seed box or seed bag to facilitate next low-temperature storage. The invention further provides the drying device used with the drying method. Main instruments such as a drying chamber, a drying box, a refrigerator, a dehumidifier, a temperature-humidity controller and the like are reasonably distributed and utilized, so that the drying process is optimized and drying efficiency is improved.

The invention relates to the technical field of 3D printing, especially to a 3D printing method. The method comprises: step 1, allowing a refrigeration bed to reach a predetermined temperature; step 2, extruding liquid water to a predetermined position of the refrigeration bed, and during an extrusion process of liquid water, fast freezing the liquid water for solidification to form a first base support; step 3, extruding a biological material to the first base support to form a first biological material layer; step 4, extruding liquid water to the first biological material layer, and fast freezing the liquid water for solidification to form a second base support; step 5, extruding the biological material to the second base support to form a second biological material layer; and step 6, repeating the step 4 and 5 until printing of a 3D model is completed. According to the technical scheme, the technical problem of cytotoxicity and biological rejection due to a support material of 3D printing in the prior art is solved.

The invented rabbit meat steak is composed of (wt. portion) rabbit meat 15-50, chicken meat 6-12, pork 6-12, bread crumb 8-12, corn starch 3-6, wheat flour 6-10, soysauce 1-2, cooking wine 1-2, pepper powder 0.5-1, sodium glutamate 0.1-1, onion 1-3, fresh ginger 1-5, solt 0.5-1, white sugar 0.5-1, water 15-19. The raw amterials are mixed, formed into shape and fried.

The invention discloses an environment-friendly detection water sample storage device convenient to take. The environment-friendly detection water sample storage device convenient to take comprises astorage box, balls, a sample storage pipe and a valve plate, a refrigeration column is installed in the storage box, a storage sleeve is arranged on the outer side of the refrigeration column, the storage sleeve is also located in the storage box, the balls are arranged between the storage sleeve and the refrigeration column, the storage sleeve is connected with the refrigeration column through the balls, an inserting rod is installed at the upper end of the valve plate, a reset spring is arranged on the outer side of a supporting rod, the reset spring is located on the inner side of a limiting groove, and the supporting rod is connected with the valve plate through the reset spring. According to the environment-friendly detection water sample storage device convenient to take, a water sample can be put into the sample storage pipe to be inserted into a storage cavity to be stored, meanwhile, liquid nitrogen can be injected into the hollow refrigeration column to control the temperature in the storage box and the storage sleeve, then the water sample can be conveniently stored at a low temperature, and the condition of high-temperature evaporation of the water sample is avoided.

The invention discloses a portable hole low-temperature sample storage box, and relates to the technical field of detection apparatus. The sample storage box comprises a cryogenic box and an electricappliance box, wherein rubber bags are fixedly connected with the upper ends of four connecting columns, electronic slide rails are arranged on two inner side walls of the cryogenic box, ice crystal storage racks are in sliding connection with insides of the two electronic slide rails, and a packaged air conditioner is arranged on the inner bottom wall of the cryogenic box. By means of supportinglegs, the connecting columns and the rubber bags, after the electric appliance box is dismounted separately, battery charge is convenient; the electronic slide rails, the ice crystal storage racks andsprings, when a small quantity samples are required to be taken out, a box cover is not required to be opened, and low-temperature environment is kept; by means of air deflectors, a turntable and wind screens, airflow disturbance is larger, cold air is distributed more uniformly, and temperature difference in the vertical direction and in the inside-outside direction is reduced; and the samples are cooled in a certain period of time by the ice crystal storage racks and ice crystal cases.

The invention discloses a low temperature preservation device of a test sample for biological gene detection. The low temperature preservation device comprises a refrigeration box body, a test samplebox body and a test sample block, universal wheels are installed on both ends of a bottom end of the refrigeration box body, a refrigeration pipe penetrating through the refrigeration box body is installed on an output end of an air compressor, one end of the refrigeration pipe away from the air compressor penetrates through a top end of the test sample box body, a third slide rail is horizontallyinstalled at the bottom end in the test sample box body, a hydraulic cylinder is vertically installed at the middle position of the top end of a second slide block, sleeves are uniformly and vertically installed at the top ends of the second slide block on the both sides of the hydraulic cylinder, a metal rod penetrating through the top ends of the sleeve is vertically installed at the top end ofa second spring, a first spring connected with the test sample block is vertically installed at the top end of the sleeve on the outer side of the metal rod, and fourth springs are uniformly and vertically installed at the bottom end in a test sample bin. According to the low temperature preservation device of the test sample for biological gene detection, when the temperature is too high, the air compressor starts to cool to facilitate the low temperature preservation of the test sample.

A preparing method for a diesel oil lubricity improver comprises the steps that straight-chain carboxylic acid and aromatic carboxylic acid are added into a reaction kettle, stirred and mixed evenly, nitrogen is introduced at the same time, heating is slowly carried out, polyalcohol is added when the reaction temperature is increased to 50 DEC C or above, and a reaction is carried out for 4-12 h at 160-220 DEG C; then amine is added, the reaction continues for 4-12 h at 160-220 DEG C, heating is stopped after the reaction is finished, the mixture is cooled to the room temperature, and the diesel oil lubricity improver is obtained.

The invention discloses veterinary enrofloxacin injection and a preparation method thereof, belonging to the technical field of preparation of veterinary drugs. The veterinary enrofloxacin injection is prepared from the following raw materials in percentage by weight: 2-20 percent of enrofloxacin, 2-30 percent of L-arginine alkali, 10-30 percent of a pH value regulator, 0.1-0.2 percent of an antioxidant, 0.01-0.02 percent of a chelating agent, 10-50 percent of an organic solvent, 1-13 percent of a cosolvent, 1-5 percent of a controlled release formulation and the balance of water for injection. The veterinary enrofloxacin injection is high in stability, low in cost and safe and convenient to use and has the advantages of long-acting effect, high efficiency and low drug tolerance. Moreover, the veterinary enrofloxacin injection is compatible with L-arginine alkali to achieve a special effect of treating mixed infection caused by sensitive bacteria and mycoplasma of beasts and birds.

The invention discloses a vehicle-mounted multi-functional emergency medical kit and relates to the technical field of medical kits. The vehicle-mounted multi-functional emergency medical kit comprises a kit body, and further comprises a first kit cover, a second kit cover and a third kit cover; one surface of the kit body is rotationally connected with one surface of the third kit cover through afirst hinge; one surface of the kit body is rotationally connected with one surface of the second kit cover through a third hinge; and one surface of the kit body is rotationally connected with one surface of the first kit cover through a second hinge. The vehicle-mounted medical kit is divided into three independent areas; a refrigerator makes drugs more convenient to store at low temperature; afirst kit body and a second support are disposed in the middle of the vehicle-mounted medical kit; a novel second kit body and a third support are designed; and thus the problems that an existing vehicle-mounted medical kit is not reasonable in space layout, large in size and singular in function structure, the storing conditions of the drugs in the kit are not complete, and the sanitation and storage of medical instruments are not reasonable are solved.

The invention relates to a winter summer double-temperature kitchen balcony integrated kitchen with variable space. The winter summer double-temperature kitchen balcony integrated kitchen with the variable space comprises a balcony outer wall, a left side wall, a right side wall, a kitchen entry wall and a kitchen door and further comprises a whole U-shaped cabinet arranged along the lower portion of inner walls of the periphery of the integrated kitchen. Two pairs of top sliding rails parallel to the side walls are fixedly and symmetrically arranged on a roof of the integrated kitchen. A separating glass curtain wall is hung below the top sliding rails through a curtain wall pulley fixedly arranged at an upper edge of a glass curtain wall, and the width of the separating glass curtain wall is the same as that of the kitchen. A door frame, a left glass side wall and a right glass side wall are respectively hinged with the middle portion below the glass curtain wall through a hinge. The two glass side walls are fixedly connected with the door frame through fixing clamps. A glass door is fixedly arranged in the door frame. A door frame side rail is fixedly arranged in a groove below an upper board of the cabinet. The door frame side pulley fixedly arranged on the door frame slides along the door frame side rail. Two bottom ends of the door frame are respectively and fixedly provided with a bottom end pulley. The bottom end pulleys slide along a ground rail fixedly arranged on a floor board. According to the winter summer double-temperature kitchen balcony integrated kitchen with the variable space, space using rate is high, a cold and warm double-temperature area is formed between a balcony and the kitchen and the cold and warm double-temperature area is changed at any time along with change of seasons so that requirements for different conditions of an operator are satisfied.

The invention discloses an intelligently-controlled drug hand truck device for a hospital. The device comprises a strip-shaped bearing base, an intelligently-controlled drug bearing mechanism is arranged on the upper surface of the strip-shaped bearing base, and a moving mechanism is arranged on the lower surface of the strip-shaped bearing base. The intelligently-controlled drug hand truck devicehas the advantages that the device is convenient to use and has a large bearing amount, low-temperature storage is facilitated, the surfaces of drugs are conveniently sterilized and disinfected, theusing safety of a patient is guaranteed, and convenience is brought for the device to be remotely controlled properly.

The invention discloses a trehalose derivative which comprises trehalose and epichlorohydrin, and the trehalose and the epichlorohydrin are in covalent binding. The trehalose derivative disclosed by the invention is prepared into a cryoprotectant, is suitable for low-temperature cryopreservation of a tissue engineering structure (such as a scaffold) containing living cells, is used as a substitute of DMSO, reduces the use of DMSO, maintains the survival rate and the recovery rate of the cells at a relatively high level, and can enable frozen stem cells to continuously maintain dryness and differentiation potential after recovery.

The invention provides a method for collecting the intestinal flora of inhuman primates in a free state. The method comprises the following steps: (1) placing a flexible pad towel and a hard backing board for bearing the flexible pad towel at the bottom of a feeding container of an inhuman primate, wherein the flexible pad towel comprises a water absorbing layer and a waterproof layer, and the waterproof layer is in contact with the hard backing board; and (2) after the defecation of the animal is observed, taking the hard backing board and the flexible pad towel out of the feeding container, and collecting the intestinal flora sample on the flexible pad towel. When the feces and urine of the animal under a free active state fall onto the flexible pad towel, the urine is absorbed by the water absorbing layer to prevent the feces from being mixed with the urine into paste; the waterproof layer can keep the original dryness of the caprophyl and is favorable for keeping the integrity of the intestinal flora sample; and the hard backing board is convenient for taking out the flexible pad towel and collecting the intestinal flora sample on the flexible pad towel. The method has the advantages of big sampling amount, good repeated sampling performance and good integrity of a flora gene sample.

The invention discloses decorative putty and a preparation method thereof. The decorative putty comprises 30 to 40% of a component A and 60 to 70% of a component B in mass percentage, wherein the component A comprises the following raw materials in mass percentage: 3 to 6% of cellulose, 70 to 75% of water, 15 to 20% of strong alkali, 1.5 to 2% of glycerol, 0.5 to 2% of phosphor and 0.5 to 2% of waterproofing agent Titan D-66; and the component B comprises the following raw materials in mass percentage: 70 to 80% of calcium carbonate and 20 to 30% of talc powder. After commonly-used putty is used on a wall, paint is required to achieve a decorative effect. The decorative putty has a decorative feature, so that after the decorative putty is plastered and calendered according to the conventional method, paint is not required; the decorative putty is very bright in surface and good in hand feel; and a leveling and decorating effect can be achieved by one time, so that materials, labor and time are greatly saved.

The invention relates to a diesel anti-wear agent with low cost and excellent anti-wear effect. The diesel anti-wear agent has the characteristics of low acid value, good low-temperature storage performance, lubricating property and the like. The ester diesel anti-wear agent provided by the invention consists of higher fatty acid, polyol, a catalyst, a water carrying agent and a small-molecular alcohol solvent. The preparation method comprises the following steps: under the protection of nitrogen, adding the higher fatty acid and the polyol into a reaction kettle according to a certain proportion, adding the catalyst and the water carrying agent, carrying out heating to 80-130 DEG C under mechanical stirring, carrying out a reaction for 4-6 hours, then adding the small-molecular alcohol solvent when the temperature is reduced to 30-60 DEG C, then carrying out heating to 90-120 DEG C, carrying out a reaction for 2 hours, carrying out vacuum dehydration on the reaction system for 30-60 minutes after the reaction is finished, and filtering and recycling the catalyst for reuse. The diesel anti-wear agent related to by the invention has a simple and efficient synthetic method, is environmentally friendly, and has strong controllability of process parameters.

The invention relates to a liquid crystal composition containing at least one compound shown in a chemical formula 1, at least one compound shown in a chemical formula 2, and at least one compound shown in a chemical formula 3. The liquid crystal composition is applied in a display unit, has high clear point temperature, good refraction anisotropy, good dielectric anisotropy and good low-temperature storage property and is suitable for requirements of following application. [chemical formula 1] [chemical formula 2] [chemical formula 3] are shown in the description, and ranges of substituent groups in the chemical formulas are shown in the description and the claim.

The invention relates to an aromatic ring liquid crystal compound, a liquid crystal composition and an assembly suitable for a microwave region and a millimeter wave region of a high-frequency technology or an electromagnetic spectrum, and particularly a phase shifter and a microwave array antenna. The liquid crystal composition provided by the invention at least comprises a compound represented by a general formula I. The liquid crystal composition provided by the invention is good in stability, high in response speed and wide in liquid crystal phase temperature range.

The invention provides a surface treatment method for a bipolar plate of a fuel cell. The surface treatment method comprises the following steps: S1, cleaning the bipolar plate; S2, drying the cleanedbipolar plate; S3, preparing a nanoscale conductive hydrophobic layer on the surface of the dried bipolar plate; and S4, roughening the bipolar plate after the nanoscale conductive hydrophobic layeris prepared so as to improve the roughness of the nanoscale conductive hydrophobic layer. By the surface treatment method, the hydrophobic property of the surface of the bipolar plate can be improvedeffectively.