275results about How to "Increase load rate" patented technology

The invention relates to a commodity distribution path planning method based on an MoCD algorithm (multi-object constraint algorithm based on Dijkstra algorithm), which includes the following steps of: firstly taking intersections or endpoints of roads as nodes and building a model of an urban road network according to actual urban road conditions; secondly determining commodity price information, and screening manufacturers which accord with commodity sending destinations; then selecting the manufacturers according to the required commodity number and the manufacturer stock quantity, and a supply and demand scheme which has multiple manufacturer combinations so as to satisfy required commodity quantity existing; and finally planning an optimal path by using the Dijkstra algorithm based on manufacture geographic positions and vehicle positions determined in the last step, and using a step by step search method to improve the search efficiency of the invention algorithm. The transport cost is saved, and the vehicle loading rate and the distribution efficiency are improved by planning the optimal path.

The invention relates to method and device for planning a logistics distribution route. The method and device are that a distribution point and a demand point are treated as nodes, and the directly-arrived shortest routes between the distribution point and the demand point and between the demand points are treated as the edges, so as to construct a route connection map; task sub-maps in which the total distribution quantity of the nodes included is not greater than the preset transportation quantity tolerance are divided according to the distribution quantity of each demand point node and the distance of each edge; the minimum support tree for all the nodes included in the task sub-maps is constructed; a loop including the longest supporting tree and the longest path is selected from the loops formed by the minimum supporting trees and the distribution point nodes as a main distribution route; return routes are provided for hanging nodes outside the main distribution route. With the adoption of the method an device, the distribution route is reasonable; the demand points are reasonably adjacently combined by a self-organization manner, and the task sub-maps are divided; therefore, the method and device are applied to large-scale distribution route planning, and can effectively reduce the distribution time and increase the distribution load factors.

The high vacuum heat insulating low temperature liquefied gas storing tank includes frame and tank body. The tank body consists of outer casing, inner container and combined support structures connecting the outer casing and the inner container. The combined support structures are set between the inner sealing head and outer sealing head on two ends of the tank to bear the radial load and the axial load with great bearing force. The heat conducting area between the inner container and the outer casing is small, and the inner container has great effective loading volume.

The invention discloses a dynamic optimal distribution method for logistics tasks based on distribution vehicle end real-time state information drive, aiming at solving the technical problem of resource waste caused by low vehicle loading rate in a conventional dynamic logistics task distribution method. According to the technical solution, automatic identification equipment for intelligently acquiring and transmitting real-time state information of a distribution vehicle in logistics distribution activities is configured at the logistics distribution vehicle end, the real-time state information of the vehicle is sensed by the vehicle through using an internet-of-things technology and transmitted to a distribution task management center, and the distribution center performs dynamic optimal distribution on the logistics distribution tasks according to the real-time information of each distribution vehicle and each distribution task, so that the loading rate of the vehicle is improved, and logistics distribution resources are furthest integrated. The method achieves the objectives of reducing the logistics cost and realizing low-carbon, efficient and green logistics.

The invention discloses a stimulus-responsive self-repair anticorrosive coating material and a preparation method. The coating material comprises a CuO microcapsule and a coating matrix. The CuO microcapsule comprises a capsule core and a capsule core carrier, the capsule core is a corrosion inhibitor, and the capsule core carrier is porous CuO; and the surface of the CuO microcapsule is coated byan anionic polyelectrolyte layer and a cationic polyelectrolyte layer alternately. The invention successfully constructs the anticorrosive coating material with ph responsiveness and self-repair dualefficacy. The porous CuO can improve the loading rate and encapsulation rate of the capsule core substance; at the same time, the anionic polyelectrolyte can be adsorbed on the surface by means of layer-by-layer self-assembly, under the action of Coulomb force, then cationic polyelectrolyte can be adsorbed on the surface, thus improving the dispersibility of the microcapsule in the coating, solving the agglomeration problem of the porous substance CuO, and at the same time improving the bonding performance of the capsule core carrier and the coating matrix, and the anticorrosion performance of the coating material can be further improved.

The invention discloses a data transmission method, a data transmission device and a distributed base station system. The method comprises that: a radio remote unit (RRU) compresses in-phase / quadrature (I / Q) paths of data of each antenna, and generates a message code stream by using the compressed data; the RRU transmits the generated message code stream to a base band unit (BBU); and the BBU receives the message code stream, extracts the I / Q paths of compressed data from the message code stream and decompresses the I / Q paths of compressed data to obtain the I and Q paths of data of each antenna. In the data transmission method, the data transmission device and the distributed base station system, the I / Q paths of data of each antenna are compressed on the RRU side, and the I / Q paths of compressed data are transmitted between the RRU and the BBU by adopting an optimal module supporting a relatively lower data transmission rate, and the I / Q paths of compressed data are decompressed to recover the compressed data on the BBU side. Therefore, a link bearing rate is increased on the bases of not increasing the cost and using the optimal module supporting the relatively lower data transmission rate.

The invention discloses a method and a device for transmitting and receiving data. The method for transmitting data comprises the following steps of: respectively compressing data of each antenna of a data transmitting end to obtain the compressed data, and caching the compressed data into different antennae, wherein the compressed data comprises valid data intercepted from corresponding antenna in the compression process and an interception index, and the interception index is used for indicating an interception start bit; reading the compressed data cached in each antenna, converting bit width of the compressed data into a bit width value required by framing, forming a basic frame with the compressed data of which bit width is converted, and transmitting the basic frame. The method provided by the invention compresses the data to be transmitted, and correspondingly decompressed the data at a receiving end, so that link loading rate is improved without using an optical module which supports high data rate, and cost is effectively saved.

The invention relates to a method for testing mechanical property of a material under the action of stress wave, in particular to a method and a device for measuring dynamic fracture property of a laser shock loading material. The method comprises the following steps of: loading a three-point bent sample (4) with preformed crackles (1) by using shock wave induced by nanosecond-scale laser pulse (8), and detecting the propagation property of the stress wave (17) in the three-point bent sample (4) and the expansion property of the crackles by adopting a method of combining photo-elasticity and moire. The device acquires a high-speed transient photo-elastic image of interaction of the material and the stress wave under the condition of a high loading rate by using a multi-spark camera optical system (13), can clearly observe the propagation of the laser-induced short pulse stress wave (17), and can accurately and reliably acquire the fracture property of the material by processing.

The invention is a high-productivity energy-saving coal water fuel preparing method, relating to the ore wet-milling field, including the steps of finely crushing, premixing, pulp-milling and pulp-filtering, where the finely crushing step further reduces the particle size of raw material coal, the premixing step mixes raw material coal, coal water fuel additive and water together into a uniform strongly self-flowing pulp, the pulp-milling step has strong milling effect because of the increased filling rate of a miller, and the pulp-filtering step adopts centrifugal pulp filtering, so as to make the coal water fuel high-productivity and energy-saving.

The invention discloses a video processing method, device and terminal, and belongs to the field of multimedia processing. The method comprises the steps: obtaining n videos, wherein n is a positive integer; enabling n videos to be combined into a target video, wherein different regions of the same video picture of the target video respectively display a display content when the target video is displayed, and each display content is corresponding to one of the n videos. The method enables different videos to be combined into one target video, and different regions of the same video picture of the target video respectively display different videos. The method can enable different videos to be combined into one target video in a content dimension, enables the target video to contain the contents of n videos, wherein the length of the target video is not changed, thereby improving the information carrying rate in a time unit. Moreover, the method achieves the substantive change of a display mode.

The invention provides a biological reaction chip and a preparation method of the biological reaction chip. The preparation method comprises the following steps: providing a microcavity chip, whereinthe microcavity chip comprises a substrate and a plurality of reaction units formed in the substrate; forming hydrophilic coatings on a platform face of the substrate and the inner side walls of the reaction units; and forming a hydrophobic coating on the surface of the substrate by adopting a wet-process chemical modification method or a transfer printing method, so that the biological reaction chip without interference of reaction liquid in the reaction units is obtained. For the biological reaction chip and the preparation method of the biological reaction chip, through the hydrophobic treatment for the platform face of the substrate and the hydrophilic treatment for the inner walls of the reaction units, the interference among the reaction units is eliminated; meanwhile, the processingsteps are simple, the sample loading rate reaches up to 95% or above, fluorescence signals can be smoothly detected, the reliability of the dPCR detection result can be improved, in addition, the micro-cavity type chip is convenient to store, and reexamination analysis can be carried out at any time.

The invention relates to preparation process of amphipathic octenyl succinic short-straight chain starch nano-particles. The preparation process comprises the following steps: (1) performing enzymolysis on gelatinized starch by using pullulanase, and obtaining short straight chain starch; (2) preparing a short straight chain starch solution, performing gelatinization, adding an octenyl succinic anhydride solution which accounts for 25-100% of the weight of dry powder of short straight chain starch, and continuously stirring for 6-10 hours, so as to obtain a modified octenyl succinic short straight chain starch solution; preparing a 1-10mg / mL solution of the octenyl succinic short-straight chain starch, stirring for 6-10 hours at 37-40 DEG C, and cooling to the room temperature, thereby obtaining a amphipathic octenyl succinic short-straight chain starch nano-particle solution. The particle size of the nano-particles is within 5-100nm, the nano-particles are good in tissue adhesion property, are capable of wrapping hydrophobic active substances, are high in loading rate and low in cost, the conveying efficiency of lyophobic active components by gastrointestinal tracts can be improved, and the bioavailability of the nano-particles can be improved. The lyophobic active components can be protected, the stability of the lyophobic active components can be improved, and the release of adverse flavor can be shielded; in addition, the addition amount and the toxic and side effects of bioactive components can be effectively reduced.

The invention discloses an internet-of-things-oriented economical type logistics transportation delivery method comprising the following steps: a current logistics transportation system is scanned, and information of all transportation stations, traffic transportation networks and transportation vehicles is counted; an RFID technology is applied to count information of goods to be sent at the current moment of each transportation station is counted; empty vehicles of all the transportation stations are scanned, and goods assembling information is distributed to each vehicle; the shortest transportation routes between the transportation station at which the vehicle is located and all other transportation stations are calculated for the selected empty vehicle; one transportation route is selected to act as the transportation route of the current vehicle; and according to the assembling task distribution process with the given transportation route, a goods transportation scheme sent by the current transportation station is calculated. According to the logistics transportation delivery method, loading rate of the vehicles in the logistics transportation process can be enhanced as much as possible. Meanwhile, the goods of the farthest target node are preferably selected to be assembled in each time of loading so that sequential delivery capability of the goods can be enhanced.

The invention discloses a test piece for testing rock II-type dynamic fracture toughness and a testing method. The test piece is a disc-shaped test piece with two cutting grooves, two rectangular mounting planes identical in shape and size and perpendicular to a diameter are processed at positions, symmetric according to a same diameter, of a test piece body, the cutting grooves which are identical in shape and size are positioned on a same diameter of the test piece body, cutting groove faces are along side face thickness direction and diameter direction of the test piece, and openings of the cutting grooves extend into the test piece and penetrate upper and lower disc plate faces of the test piece. The testing method includes: mounting the test piece between an incidence rod and a transmission rod of a Hopkinson press rod testing device; utilizing an impact rod to impact the front end face of the incidence rod, wherein generated stress waves are shaped by a waveform shaping piece arranged on the front end face of the incidence rod and then act on the test piece through the incidence rod; collecting incidence strain, reflection strain and transmission strain in the whole process from impact starting to failing of the test piece by strain pieces arranged on the incidence rod and the transmission rod, and calculating to acquire rock II-type dynamic fracture toughness.

The invention relates to the technical field of automobile logistics, in particular to a multi-target logistics scheduling method and device, a logistics system and a computer readable medium. The method comprises the following steps: S1, initializing an order distribution strategy to form an initial scheduling arrangement; s2, using a target cost function to calculate cost for the initial scheduling arrangement; s3, updating the order distribution strategy and the scheduling arrangement by using a global optimization algorithm; s4, calculating the cost of the updated scheduling arrangement byusing a target cost function to obtain an optimization result of the target cost function, if the optimization requirement is not met, continuing to execute the step S3, and if the optimization requirement is met, executing the step S5; and S5, performing constraint condition inspection on the scheduling arrangement, if the scheduling arrangement passes the inspection, determining the schedulingarrangement to be an optimal result, and if the scheduling arrangement does not pass the inspection, continuing to perform the step S3. The planned route achieves the optimal total route length, and compared with the current logistics actual scheduling arrangement, the number of vehicles is obviously reduced, the loading rate is increased, and the cost is saved.

The invention discloses a cell-gel material composite microsphere as well as a preparation method and an application thereof and belongs to the field of biomedical materials. The cell-gel material composite microsphere is prepared from a gel microsphere and cells distributed in the gel microsphere. The preparation method comprises the following steps: dispersing a gel material-cell mixed solution in an oily solution, and carrying out emulsification and gelation treatment to obtain the cell-gel material composite microsphere. The cell-gel material composite microsphere is controllable in cell loading ratio, high in cell survival rate, small in volume shrinkage, difficult in breaking, good in transmitting capability of nutrients and metabolites, simple in preparation method and convenient in popularization and application and can also be used for preparing nonhomogeneous hydrogel so as to obtain a material with high biomimetic degree.

The invention discloses an epirubicin loaded graphene quantum dot drug carrying system and a preparation method thereof. The preparation method includes the following steps: preparation of graphene quantum dots by a hydrothermal method; loading an anti-cancer drug with the graphene quantum dots; and performing a drug slow-release experiment, and performing a cytotoxicity test on the drug carrying system. The graphene quantum dots prepared by the hydrothermal method are used as a drug carrier for being loaded with epirubicin, greatly improve the drug loading rate, and show a quite good inhibitory effect on tumor HeLa cells. The preparation method of the drug carrying system is simple to operate, mild in reaction conditions and high in drug loading rate, and is expected to have a broad application prospect in the field of biological medicine.

The invention relates to a data storage and query method based on matrix hashes. The method comprises the steps that 1), a hash table data structure is established, wherein the structure comprises z child tables, z is an even number, and the sizes of the child tables decrease progressively in equal difference; for 1<=i<= , the i child table is combined with the (z-i+1) child table to obtain child tables with the same size; 2), an auxiliary data structure is established, wherein the structure comprises z Bloom filters corresponding to the z child tables, and the sizes of the Bloom filters decrease progressively in equal difference; for 1<=i<= , the i Bloom filter is combined with the (z-i+1) Bloom filter to obtain Bloom filters with the same size, and the Bloom filtersare added together to form a multi-bit Bloom filter; 3), a key-value pair is inserted by using the hash table data structure and the auxiliary data structure to achieve data storage. By means of themethod, rapid update and rapid query can be achieved.

The invention discloses a novel thermal insulation material, and the composition comprises expanded perlite, cement, gypsum powder, fibers, redispersible rubber powder, casein glue, and the like. The thermal insulation material has the advantages of high strength, aging resistance, excellent thermal insulation effect, energy conservation, environmental protection, fire protection, sound insulation, low cost, convenient use, and the like. The novel thermal insulation material can be directly applied on buildings, containers, pipelines, reactors, household appliances and the like through a plurality of construction methods, thereby achieving the effects of thermal insulation and energy conservation.

The invention provides an intelligent-packaging-service modeling and distribution-task dynamic optimization method oriented to environmental logistics. A designed environment-friendly recyclable intelligent packaging box based on the internet of things provides a packaging service with the high performance-price ratio for express commodities, wherein the internet of things provides a technical support and design standard for recyclable environment-friendly intelligent boxes to achieve the intelligent box-enabled cloud logistics service. For a logistics service based on a product service system, a logistics company provides intelligent boxes, and is responsible for collecting, maintaining and repeatedly using the intelligent boxes; clients use the packaging service of the intelligent boxes, and win-win cooperation between the clients and a logistics enterprise is achieved. A cloud logistics service platform integrated with multi-source logistics information is designed, in the logistics platform, real-time optimization and the distribution scheme of logistics tasks are achieved with the logistics-distribution-task dynamic optimization method driven by the real-time logistics requirements, logistics resources in the cloud platform are optimally configured, and a low-carbon and efficient environment-friendly logistics service is achieved through a loading optimizing service, a logistics information management service and a route optimization navigation service.

The invention relates to the technical field of information storage, in particular to a DNA-based information storage method. A long sequence in vivo DNA information storage technique is provide. Themain goal is to construct a coding system with strong error correction mechanism based on LDPC and BCH codes, which can reduce the redundancy of primers and indexes by long sequence coding, and achieve a high actual carrying capacity (above 97%). The main goal is to construct a medium-length DNA sequence (above 1Kbp). Saccharomyces cerevisiae in vivo assembly system is used to assemble and store long sequences and preserve information, and the information can be replicated at low cost, high fidelity and high speed by model organisms such as Saccharomyces cerevisiae, Escherichia coli or Bacillus. At the same time, because of the existence of strong error correction system, the data in the bacterial cell can be reduced perfectly with low coverage (1-5 X) in the second generation and third generation sequencing.

The invention discloses a method and a system for optimizing distributed collaborative loading. The method comprises the following steps that: a transportation management system generates an optimal route transportation plan according to a grouping standard, a sorting standard and a capacity standard; a warehouse control system distributes platforms and vehicle resources according to the transportation plan; and a radio frequency system corrects the transportation plan according to the actual loading condition. After the techncial scheme of the invention is adopted, resources can be sufficiently controlled and effectively balanced, so that manpower, material resources and financial resources of an enterprise are saved.

The invention relates to a waste water and waste gas photodegradation apparatus. The apparatus comprises a microstructure fiber monomer; the microstructure fiber monomer comprises a fiber substrate, air pore channels and a cladding; the fiber substrate is arranged in the cladding; air pore channels are formed in the fiber substrate; and titanium dioxide nano-particles are arranged on the interior surfaces of the air pore channels. The apparatus greatly improves the loading rate of the titanium dioxide photocatalyst, and greatly enlarges the light receiving area so that the treatment system scale can be infinite and the apparatus lays the foundation for constructing one set of microstructure dispersion fiber load-based nano titanium dioxide photocatalysis waste water and waste gas treatment system; and a permeable ultraviolet light dispersion microstructure polymer fiber load titanium dioxide enables the apparatus to efficiently absorb ultraviolet light on long-distance side, further enlarge the light receiving area and improve the photocatalysis efficiency.

The invention relates to a packing gasket for protecting a liquid crystal display panel semi-finished product. The packing gasket for protecting the liquid crystal display panel semi-finished product comprises first separation portions and second separation portions extending from the side faces of the first separation portions in the radial direction, wherein the thickness of the first separation portions is larger than that of the second separation portions. Cavities which can contain circuit board assemblies are formed between the second separation portions of the packing gasket and the adjacent packing gasket, and the height of the cavities is larger than the distance between the first separation portions of every two adjacent packing gaskets. Accordingly, the negative effect generated due to the fact that the maximum thickness of the printed circuit board assemblies is larger than the thickness of a liquid crystal display panel can be weakened.

The invention relates to a multifunctional intermittent expansion solid-state fermentation tank which comprises a fermentation tank body, wherein an emptying safety valve, an exhaust pipe with an air filter and temperature, water, pH value and dissolved oxygen probes are arranged on the tank body, and a liquid discharge main valve is arranged at the bottom of the tank body; and a gas-distribution liquid-distribution main pipe composed of a liquid pipeline, a steam pipeline and a gas pipeline is arranged outside the tank body. The multifunctional intermittent expansion solid-state fermentation tank is characterized in that a multi-layer loading vehicle capable of being pushed into the tank body through a sealing door on the wall of the tank body is also arranged; a base plate filled with a solid medium is placed on each layer of the loading vehicle, and an inoculation liquid and heat-transfer oxygen-supplying gas outlet is formed on the top base plate; and a collected liquid guiding tank is arranged on the bottom base plate, a gas-conveying liquid-conveying pipe is arranged in the liquid guiding tank, gas-distribution liquid-distribution holes are uniformly distributed on both sides of the gas-conveying liquid-conveying pipe, one end of the gas-distribution liquid-distribution main pipe is communicated with the gas-conveying liquid-conveying pipe in the liquid guiding tank through an interface hose in the tank body, and the liquid discharge pipe of each base plate is communicated with the liquid discharge main pipe of the fermentation tank body.

The invention discloses a photosensitive functionalized solid-supported phase, a preparation method and application thereof. The invention first provides photosensitive functionalized compounds with a structural formula of I or II. Further, the compound with the structural formula of I or II provided by the invention is connected onto amino solid-phase to obtain the photosensitive functionalized solid-supported phase with a structural formula of III or IV. In the solid-phase synthesis of oligonucleotides, the photosensitive functionalized solid-supported phase can be used as 3' end of ODN of the oligonucleotide. After the synthesis process, the oligonucleotides can be cleaved from the solid-supported phase and removed protective groups effectively under illumination to expose the corresponding functional groups, which can be connected with small molecule dyes, or cyclic oligonucleotides are formed through products with double-modified two ends themselves. Results of loading rate and photo-cleavage efficiency experiments show that the compounds with the structural formula of III or IV have higher loading rates and excellent photo-cleavage cutting efficiencies and can be used for solid-phase synthesis and functionalization of the oligonucleotides.

The invention discloses a distribution task scheduling optimization method of an intelligent electric meter, which belongs to the research field of distribution methods of electric energy metering devices. The method of the invention combines the actual situation of the provincial metering center, and transforms the distribution task scheduling problem of the electric energy metering device into a vehicle path planning and vehicle scheduling problem in which a distribution center uses different types of distribution vehicles to deliver to multiple demand points. This problem also takes into account the constraints of customer needs and geographical location, vehicle capacity and time constraints. This plan comprehensively considers multiple factors such as the demand type, delivery time, delivery space, and vehicle capacity of the metering device distribution of the provincial metering center, and designs an optimization algorithm for the distribution task scheduling of the metering device, thereby reducing the burden of traditional manual formulation of the metering device delivery plan. Many disadvantages provide strong support for timely, economical, efficient and accurate distribution of metering devices.

The invention discloses preparation and application of a material for tumor photothermic treatment, and belongs to the field of biological medicine. The material comprises GNR, a mesoporous SiO2 layer wrapping the outer layer of the GNR, DOX loaded into pores of mesoporous SiO2, alkylation hydroxymethyl coumarin blocking mesoporous SiO2, and target hyaluronic acid on the outermost layer. After functional groups of the outer layer of SiO2 are modified into carboxyl groups, medicine loading is conducted through electrostatic interaction; after medicine loading, coumarin with alkyl chains are introduced through chemical grafting, an oily molecular layer is formed, and medicine leakage is prevented; in the material, ester bonds formed by coumarin molecules and the carboxyl groups on the surface of a silicon shell have light sensitivity, and the light response type intelligent release of medicine can be achieved; finally, molecules with long circulation and target molecules capable of being specifically combined with cancer cells are assembled on the material, and long circulation and dosage targeted performance are provided for the material.

The invention provides a crop straw picking tipping trailer and relates to agricultural machinery. The crop straw picking tipping trailer aims to solve the problems of high labor intensity of recycling the crop straws from the farmland by farmers and low work efficiency caused by the facts that the conventional equipment for removing straws from a field is mainly a packing machine and the packed bag needs to be removed from the field by a bag picking vehicle, as well as the problems of waste of resources and environmental pollution caused by straw incineration. The crop straw picking tipping trailer comprises a tractor, a traction device, a picking and pushing device and a straw self-discharging transport trailer; the picking and pushing device comprises a pushing loader, a pickup device and a transmission mechanism; the pushing loader and the pickup device are arranged up and down; the input end of the transmission mechanism is connected with a pushing main shaft on the pushing loader; the output end of the transmission mechanism is connected with a pickup device main shaft on the pickup device; the input end of the pushing loader is connected with the output end of the traction device; the traction device is fixedly arranged on the tractor; a pushing fixed plate on the pushing loader is fixedly connected with a carriage body on the straw self-discharging transport trailer. The crop straw picking tipping trailer is used for collecting the straws.

The invention relates to a pressure container with heat insulation measures, in particular to a welded adiabatic gas cylinder which comprises a cylinder body, a valve base, a safety valve, a rupture disk, a pressure gauge, a liquidometer and a connection pipe. The cylinder body consists of an inner tank and a housing; a vacuum interlayer is formed between the inner tank and the housing; an insulating layer is arranged in the vacuum interlayer; a supporting system and an inner evaporator are also arranged on the welded adiabatic gas cylinder; the supporting system is arranged in the vacuum interlayer and connected with the inner tank; the insulating layer is a structure of more than two layers of insulated packing layers, and the inner evaporator is arranged in the vacuum interlayer and provided with a degasser layer attached on the inner tank or attached on the housing. The welded adiabatic gas cylinder has the advantages of low heat leakage, good low-temperature insulating effect, excellent supporting strength, convenience for use, high loading rate, security and reliability, high purity of stored gas, high vacuum degree, long vacuum service life and the like and is mainly applied to low-temperature liquid such as liquid oxygen, liquid nitrogen and liquid argon.