11 results about "Ultra Low Temperature Freezer" patented technology

The application discloses a kind of composite protein gels and preparation method thereof, its preparation method includes the following steps: with the blood collection tube with anticoagulant is collected blood;The above-mentioned blood is centrifuged at 300-700g centrifugal acceleration at room temperature 10-20min;After centrifugation, blood is transferred to biological safety cabinet, and the upper plasma layer is extracted, and then it is placed in-80 ℃ ultra-low temperature refrigerator and rapidly frozen, and the freezing time is 24-72h;Then, the frozen plasma is taken out, and freeze-drying treatment is carried out under the condition that the temperature is-55-65 ℃ and the pressure is 50-100Pa, and the freeze-dried plasma is prepared;Calcium chloride injection is added to the freeze-dried plasma at a volume ratio of 1:0.5-2, then reacted in a water bath at 60-90 ℃ for 5-15min, and removed to prepare.The protein gel can effectively solve the problem of easy skin stiffening, collapse, high in vivo absorption rate and poor filler stability caused by hyaluronic acid and autologous fat.

A lily pollen dry storage box belongs to the field of agricultural and horticultural technology. The box comprises a C layer, a detachable A layer and / or a B layer arranged on the C layer, and after combination, a two-layer or three-layer storage box body is formed. The A layer and the B layer are both provided with a baffle with a plurality of through holes at the bottom. The A layer is a closed space with a seal, and the bottom is provided with a baffle I with a plurality of through holes I. A drying agent is arranged in the A layer. The B layer is an open box body, and the bottom is provided with a baffle II with a plurality of through holes II for containing fresh medicinal herbs. The C layer is an open box body for containing dried pollen. The bottom of the A layer and the B layer is provided with a detachable sealing connection structure matched with the top of the C layer. The top of the B layer and the top of the C layer have the same structure. Different varieties of lily pollen are separately collected in the plastic box, which is convenient for pollen classification and drying, and can be stored in a 4℃, -18℃ and ultra-low temperature refrigerator for a long time, prolonging the activity of the pollen, and having good airtightness, moisture resistance, spilling resistance, drop resistance and information searching convenience.

The invention relates to the technical field of ultralow-temperature refrigeration equipment, and discloses a refrigeration system. The refrigeration system comprises a refrigerator, a gravity heat pipe system, an air return pipe and a vibration reduction assembly. The refrigerator comprises a cold end; the gravity assisted heat pipe system is communicated with the cold end of the refrigerating machine, the gravity assisted heat pipe system comprises multiple paths of heat pipes arranged on the top and the peripheral side of the inner container, and a working medium collecting area is formed at the bottom of the multiple paths of heat pipes; the inflow end of the air return pipe is communicated with the working medium collecting area; the vibration reduction assembly comprises a first vibration reduction pipe and a second vibration reduction pipe, the first vibration reduction pipe is communicated between the inflow end of the gravity heat pipe system and the cold end of the refrigerator, and the second vibration reduction pipe is communicated between the outflow end of the air return pipe and the cold end of the refrigerator. By means of the arrangement, stable distribution of liquid films on the inner walls of the heat pipes can be guaranteed, meanwhile, it is avoided that backflow of heat exchange working media is blocked due to the fact that the heat pipes have reverse slopes or flat sections, and then the temperature control precision of the ultralow-temperature refrigerator is guaranteed. Meanwhile, the invention further discloses the ultralow-temperature refrigerator.

The invention discloses a calibration method for cryopreservation frame box body taking. The calibration method comprises the steps that S1, an infrared distance meter is correspondingly installed on a mechanical arm of an ultralow-temperature refrigerator; s2, in the designated area, a mechanical arm is moved to the corresponding cryopreservation frame box storing and taking position recorded historically, and the mechanical arm is controlled to move in the vertical direction and the horizontal direction of the irradiation vertical plane of the infrared distance meter; s3, in the moving process of the mechanical arm, the infrared distance measuring instrument synchronously collects infrared distance measuring results, and two sets of distance measuring fluctuations of the two sets of cryopreservation frame box bodies in the vertical direction are obtained correspondingly; and S4, the coordinate height and the translation amount position of the mechanical arm are recorded, and the corresponding box body taking position of the mechanical arm is obtained through calculation and used for controlling the mechanical arm to accurately take the box body. According to the method, the sample box storage positions on the cryopreservation frame are subjected to distance measurement calibration through laser, the sample calibration positions can be determined based on distance measurement data fluctuation, accurate positioning and taking of cryopreservation frame box bodies are achieved, and the dislocation taking influence caused by deformation in the ultralow-temperature environment is avoided.

The invention discloses a clinical test digital intelligent mobile laboratory which comprises a chassis and a compartment. Front wheels and rear wheels are arranged on the chassis, a cab is arranged at the front end of the chassis, and a driving device for driving the front wheels to rotate is installed at the front end of the chassis. The compartment is arranged on the chassis, three partition plates are arranged in the compartment and divide the compartment into a power supply area, a sample storage area, a medicine intravenous dispensing area and a pharmacy area, and side doors are arranged on the two partition plates close to the tail of the compartment. The power supply area is located on the front portion of the compartment and internally provided with a mute generator. The pharmacy area is positioned at the tail part of the carriage; a medical low-temperature box and a medical refrigerator are arranged in the pharmacy area; an ultralow-temperature refrigerator and a centrifugal machine are arranged in the sample storage area; a biological safety cabinet is arranged in the medicine intravenous distribution area; two cabin doors are arranged on the side face of the compartment, one cabin door is used for entering and exiting the power supply area, the other cabin door is used for entering and exiting the sample storage area or the medicine intravenous dispensing area, and a hinged door is arranged at the tail of the compartment. According to the invention, a mobile laboratory is formed, and the efficiency of clinical tests is improved.

The invention provides a step-by-step foaming method for an ultralow-temperature refrigerator based on a low-thermal-conductivity heat insulation plate frame, which comprises the following steps of: (1) preparing a heat insulation frame matched with an inner container by adopting a low-thermal-conductivity material, and enclosing and sealing a foaming space through a positioning structure to ensure that an evaporator is completely accommodated in the frame; (2) after the heat insulation frame is fixed, an LBA foaming material is injected into the frame for foaming, and a primary foaming layer is formed; and (3) sleeving a heat exchanger on the outer side of the heat insulation frame, integrally putting the heat insulation frame into a mold, and injecting a secondary foaming material containing a cross-linking agent into a gap outside the frame for foaming to form a secondary foaming layer. According to the invention, the peripheral space of the evaporator is precisely limited by the low-thermal-conductivity heat insulation plate frame, and a segmented process of primary foaming inside the frame and secondary foaming outside the frame is matched, so that the problems of obvious heat bridge in an evaporator area, non-uniform density of a foaming layer, poor foaming stability of pure LBA and the like in a traditional foaming process are solved; finally, the aims of improving the heat preservation performance of the ultralow-temperature refrigerator, reducing energy consumption, being stable in structure and environment-friendly and controllable in foaming are achieved.

The utility model relates to an air inlet valve for air balance, an air balance device and an ultralow-temperature refrigerator, and belongs to the technical field of refrigeration equipment. The air inlet valve comprises a valve body and a plugging piece. A valve cavity is formed in the valve body, and an air inlet and an air outlet connector are formed in the valve body. A guide part is arranged in the air inlet and divides the air inlet into a guide channel located in the guide part and an air inlet channel located between the guide part and the air inlet; the plugging piece is arranged in the valve cavity and comprises a sealing part and a guide part; the sealing part floats up and down in the valve cavity under the action of airflow flowing in from the air inlet channel, and falls to cover the air inlet to seal the air inlet channel without the action of airflow; the guide part is arranged in the guide channel and is in sliding fit with the guide channel; the top end of the guide part is connected to the bottom of the sealing part to move up and down along with the sealing part; the air inlet valve adopts the plugging piece with a novel structure and is provided with the guide structure for guiding the plugging piece to fall, and an air inlet with a relatively large size can be designed so as to meet the requirement of rapidly balancing air pressure.

The invention discloses a method for screening Yili horse mammary gland development key genes and application thereof, and belongs to the field of genomics and molecular breeding. The method comprises the following steps: step 1, selection and treatment of experimental Yili horses: slaughtering the Yili horses in the early lactation period and the peak lactation period, collecting breast tissue samples, putting the breast tissue samples into a cryopreservation tube, putting the cryopreservation tube into liquid nitrogen, taking the cryopreservation tube back to a laboratory, and putting the cryopreservation tube into an ultralow-temperature refrigerator; step 2, carrying out RNA extraction on the Ili horse mammary gland tissue, constructing an ATAC library, an RNA library, a CUT-Tag library and an STRIPE library, and carrying out sequencing; and step 3, carrying out conjoint analysis on the sequencing data in the step 2, and mining key genes related to lactation. The invention also provides application of the method in a horse variety breeding process. The Yili horse mammary gland development and lactation related genes are excavated through a multi-omics technology, the blank in the prior art is filled, a target spot is provided for molecular marker-assisted breeding, and breeding of high-yield and high-quality horse varieties is accelerated.

The utility model discloses a stem cell low-temperature preservation device which comprises an ultralow-temperature refrigerator, the upper end of the ultralow-temperature refrigerator is fixedly connected with a refrigerating chamber, the bottom of the refrigerating chamber is fixedly connected with a supporting seat, a clamping groove is formed in the middle end of the top of the supporting seat, and containing grooves are formed in the two ends of the supporting seat. The two ends of the containing groove are movably connected with guide wheels through bearings, and the surfaces of the guide wheels are movably connected with supporting sliding rods. Through the arrangement of the containing table, stem cell samples needing to be stored at low temperature can be contained in a refrigerating chamber of the ultralow-temperature refrigerator, through the arrangement of the containing groove, the guide wheel and the supporting sliding rod, supporting and guiding can be conducted between the supporting base and the two ends of the containing table, and meanwhile through the arrangement of the fixing shell, the clamping rod and the clamping groove, the stem cell samples can be stored at low temperature. The containing table and the supporting base can be clamped and limited, and the situation that the containing table is displaced due to stress in the low-temperature preservation process of the stem cell samples is avoided.

The utility model relates to a door seal strip and including its ultra low temperature refrigerator belong to refrigeration equipment technical field. The door seal strip is equipped with a plurality, all fixed on the cabinet of refrigerator, and with the door body sealed contact connection of cabinet, and the door seal strip includes the sleeve, and the sleeve inside hollow and stored gas, and the sleeve inside still is equipped with the partition for blocking the convection of sleeve inside gas. The door seal strip passes through setting the partition in the sleeve, and the free flow of internal gas is blocked, and the heat exchange caused because of gas convection is reduced, thereby promoting the overall heat insulation performance of door seal strip, reduces the heat leakage of door body place, guarantees the ultra low temperature environment in the ultra low temperature refrigerator.