42 results about "Two stage operation" patented technology

A system and method for maintaining checkpoints of a keyed data structure using a sequential log are provided. The system and method are built upon the idea of writing all updates to a keyed data structure in a physically sequential location. The system and method make use of a two-stage operation. In a first stage, various values of the same key are combined such that only the latest value in a given checkpoint interval is maintained for writing to persistent storage. In a second stage of the operation, a periodic write operation is performed to actually store the latest values for the key-value pairs to a persistent storage. All such updates to key-value pairs are written to the end of a sequential log. This minimizes the physical storage input / output (I / O) overhead for the write operations. Data structures are provided for identifying the most current entries in the sequential log for each key-value pair.

A tap attached to one end of a water pipe or a connecting pipe of a water dispenser, and controlling the flow of water or liquid by opening and closing an outlet by the operation of a handle actuated by the leverage, the tap including a body having a shaft with a compression spring, connected to a packing used for opening and closing the outlet, and a lid serving to support a support point when turning or, or off the tap; a push handle mounted on the upper portion of the body and having a shaft connecting boss coupled to the front end of the shaft, a downward rotation stopper, an upward rotation stopper, a push portion, and a race formed on its middle; and an auxiliary handle inserted into the race of the push handle and varying the support point of the push handle according to its two-stage operation, thus controlling the opening / closing of the packing with safety.

According to a disclosed embodiment of the invention, software download and installation in a ring network are synchronized in a two-stage operation in order to minimize service disruption time. In a first phase, the MPM's and UIM's in all the nodes are upgraded in parallel. Each node has two main processing modules, allowing one to be upgraded while the other continues to operate the node. In a second phase, the RIM's at the edges of a single ring segment are upgraded, one ring segment after the other, during which time each terminal node continues to operate with respect to the span connecting to its opposite side. While a span is non-operative, traffic is wrapped or diverted as necessary to maintain service of the ring. While one RIM of a node is being upgraded, the other RIM remains operational.

A two-stage computer network packet classification method and system is proposed, which is designed for integration to a network system for classification of packets within the network system. The proposed method and system is characterized by the use of a two-stage operation for packet classification; wherein the first-stage operation involves the use of a decision-tree data module whose leaf nodes are used to store a bit vector that represents a cluster of rule groups that are located within a particular cut region in a multidimensional Euclidean space that is mapped to the field values of the input packet; and the second-stage operation involves the use of a bit-vector lookup table data module to retrieve a set of bit vectors which represent a set of possible rules in each rule group and which are intersected to find a matched rule for the input packet. This feature allows the packet classification to be implemented with low memory requirement and enhanced system performance.

The modular exponentiation function used in public key encryption and decryption systems is implemented in a standalone engine having at its core modular multiplication circuits which operate in two phases which share overlapping hardware structures. The partitioning of large arrays in the hardware structure, for multiplication and addition, into smaller structures results in a multiplier design comprising a series of nearly identical processing elements linked together in a chained fashion. As a result of the two-phase operation and the chaining together of partitioned processing elements, the overall structure is operable in a pipelined fashion to improve throughput and speed. The chained processing elements are constructed so as to provide a partitionable chain with separate parts for processing factors of the modulus. In this mode, the system is particularly useful for exploiting characteristics of the Chinese Remainder Theorem to perform rapid exponentiation operations. A checksum mechanism is also provided to insure accurate operation without impacting speed and without significantly increasing complexity. While the present disclosure is directed to a complex system which includes a number of features, the present application is particularly directed to the incorporation and integration of circuits used for calculating a modular multiplicative inverse used as an input parameter to the process.

The invention discloses a compound crusher. The compound crusher comprises a housing. A material distribution device is fixed to the top of the housing. A material outlet is arranged at the bottom of the housing. A double-tooth roller structure for coarse crushing is installed in the housing. The double-tooth roller structure comprises a pair of parallel tooth rollers. The parallel tooth rollers comprise a front tooth roller and a rear tooth roller. An invertible impacting hammer structure for fine crushing is installed under the double-tooth roller structure in the housing. The invertible impacting hammer structure comprises a pair of rotors parallel to the tooth rollers. The rotors comprise a front rotor and a rear rotor. Impacting hammers are fixed to the rotors. Impacting plates are arranged at two sides of the rotors. A material guide cone is arranged between the tooth rollers and the rotors on the perpendicular bisector of the two tooth rollers. The compound crusher realizes coarse crushing and fine crushing two-stage operation, reduces an investment cost and an operation cost of equipment, has a large volume, is environmentally friendly, does not produce raised dust, prevents bonding and blocking, and is convenient for fast maintenance.

The invention provides a compressor, which comprises a shell; a crankshaft; a first air cylinder; a second air cylinder; a middle partition board; a first flange; a first cover plate; a second flange; a first vent hole communicated with an exhaust pipe; a second vent hole, which is arranged on the shell between the first flange and the first cover; a first valve body, which is arranged between the first vent hole and the second vent hole; a second valve body, which is disposed between the second vent hole and a second air suction pipe arranged on the second air cylinder; a third valve body, which is arranged between the exhaust pipe and the second air suction pipe. By adding three body bodies, switching of the compressor under three states can be realized, and different needs under different working conditions can be realized. Especially under severe working conditions (ultra low temperature heating or high temperature refrigeration), two-stage operation of the compressor can be realized, and the refrigeration and heating efficiency can be improved. Under ordinary heating or refrigeration conditions, single cylinder or double-cylinder operation can be chosen according to different needs.

A pressure control valve assembly, (i.e. pressure regulator valve assembly) is described which is configured for at least a two stage operation including: a first stage in which flow is allowed through two sections of the valve frame; and, a second stage in which the valve member is biased against one of the sections of the valve frame and not the second section. Specific example features and configurations are depicted and described. A crankcase ventilation filter assembly including the pressure control valve assembly is described.

The invention discloses a bionic dental implant, comprising a mother root and an abutment as well as at least one seminal root; wherein the mother root comprises a retention root part at the lower part and an abutment part at the upper part; the abutment is arranged on the mother root by virtue of the abutment part of the mother root, wherein the abutment is provided with an inclined hole, and the mother root is provided with an inclined hole which is communicated with the inclined hole; the seminal root comprises a retention root part at the lower part and a connecting part at the upper part, the connecting part is arranged in the inclined hole, the seminal root stretches out the mother root from the inclined hole, and the retention root part thereof is at least partially arranged outside the mother root. According to the bionic dental implant of the invention, after implantation operation of mother root is completed on jaw bone of human body, the abutment is directly inserted into the mother root, thus completing fitting and mounting of the mother root and the abutment. Then the seminal root is directly screwed in, thus completing the entire implantation of the bionic dental implant, no two-stage operation or abutment arrangement is required, and the whole operation process is convenient and rapid.

The modular exponentiation function used in public key encryption and decryption systems is implemented in a standalone engine having at its core modular multiplication circuits which operate in two phases which share overlapping hardware structures. The partitioning of large arrays in the hardware structure, for multiplication and addition, into smaller structures results in a multiplier design comprising a series of nearly identical processing elements linked together in a chained fashion. As a result of the two-phase operation and the chaining together of partitioned processing elements, the overall structure is operable in a pipelined fashion to improve throughput and speed. The chained processing elements are constructed so as to provide a partitionable chain with separate parts for processing factors of the modulus. In this mode, the system is particularly useful for exploiting characteristics of the Chinese Remainder Theorem to perform rapid exponentiation operations. A checksum mechanism is also provided to insure accurate operation without impacting speed and without significantly increasing complexity. While the present disclosure is directed to a complex system which includes a number of features, the present application is particularly directed to circuits and methods for carrying out modular exponentiation.

The invention discloses a high-elasticity high / low-temperature-resistant road joint sealing material and a preparation method thereof. The road joint sealing material is prepared from coal tar, matrix asphalt, modifiers, a plasticizer, a stabilizer and a filler by a two-stage operation process. The method comprises the following steps: first stage: while stirring at low speed, carrying out thermal dehydration on the coal tar, adding the matrix asphalt and rubber powder, and heating to 160-210 DEG C for swelling; and second stage: increasing the stirring rate, cooling to 125-140 DEG C, adding the stabilizer, plasticizer and polyvinyl chloride, stirring for plastifying, finally adding the filler, stirring uniformly, cooling, and discharging the high-elasticity high / low-temperature-resistant road joint sealing material. The product has excellent high / low temperature resistance, and can not drip at high temperature in summer or crack at -18 DEG C in winter. The product has the advantages of favorable aging resistance, high elastic recovery rate and low raw material price, and can easily implement industrial production. The modifiers polyvinyl chloride and rubber powder are from waste plastic tires and the like; and the polyvinyl chloride, rubber powder and coal tar are wastes to be recovered and reutilized.

A system is provided for automatically opening and closing a two-part longitudinally hinged longitudinal cover for a swim spa. The automatic swim spa cover opening and closing system is characterized by a longitudinal support that spans between and along longitudinal ends of the two cover parts, first and second drive mechanisms disposed on opposite longitudinal ends of the swim spa, a first drive arm operatively connected to and between the first drive mechanism and a first end of the longitudinal support, and a second drive arm operatively connected to and between the second drive mechanism and a second end of the longitudinal support. The drive mechanisms each include a hydraulic cylinder operating configured drive gearing that operates configured drive arm gearing. The drive and arm gearing provide a two-stage operation of the drive arm to separately pivot the two cover parts for opening and closing the two-part swim spa cover.

A non-volatile memory (NVM) system includes a set of NVM cells, each including: a NVM transistor; an access transistor coupling the NVM transistor to a corresponding bit line; and a source select transistor coupling the NVM transistor to a common source. The NVM cells are written by a two-phase operation that includes an erase phase and a program phase. A common set of bit line voltages are applied to the bit lines during both the erase and programming phases. The access transistors are turned on and the source select transistors are turned off during the erase and programming phases. A first control voltage is applied to the control gates of the NVM transistors during the erase phase, and a second control voltage is applied to the control gates of the NVM transistors during the program phase. Under these conditions, the average required number of Fowler-Nordheim tunneling operations is reduced.

The invention provides a guide filtering-based two-stage remote sensing image fusion method. Image fusion is performed by adopting guide filtering models of two guide modes in two-stage operation; preprocessed images are preliminarily fused by utilizing multi-channel guide filtering; a fusion result is subjected to space resolution increment by utilizing single-channel guide filtering through designing a proper enhanced model; and finally original spectral information of multispectral images and space information of full-color images are fused to obtain a high-quality fused image. The method is an effective fusion method suitable for fusion of high-resolution satellite-borne multispectral and full-color images.

The invention discloses a clamping device for wire harness stripping, relates to the technical field of wire harness processing equipment, and comprises a wire pay-off frame, a wire take-up frame and a clamping device between the wire pay-off frame and the wire take-up frame. The clamping device is located at the operating On the table, the clamping device includes clamping device 1 and clamping device 2, which are symmetrically installed on the operating table. The left clamping head is composed of left splint 1 and left splint 2, the right clamping head is composed of right splint 1 and right splint 2, the middle splint is composed of strip splint 1 and strip splint 2, and the end surface of left splint 1 There is a groove, and a pressure sensor is installed in the groove through a spring. The telescopic cylinder 1 and the telescopic cylinder 2 are arranged on the console. The invention saves manpower and reduces the stripping cost by semi-automatically stripping the wire harness. , improving production efficiency.

The invention relates to a beneficiation method for separating weakly magnetic mineral and mica, and belongs to the field of beneficiation technologies. The beneficiation method comprises the steps of crushing, sieving and coarse grinding the weakly magnetic mineral (raw ore), performing size grading control and the granularity of 0.074mm accounts for 60 percent to 70 percent; and then performing the pulsating high gradient magnetic separation on the graded weakly magnetic mineral, obtaining castoff non-magnetic gangue and a magnetic product containing the weakly magnetic mineral and the mica through roughing; performing the centrifugal high-gradient magnetic separation on the obtained magnetic product containing the weakly magnetic mineral and the mica to obtain a magnetic product separated from the mica and the mica through roughing; performing size grading control on the magnetic product separated from the mica and the granularity of 0.074mm accounts for 85 percent to 95 percent, and performing the pulsating high gradient magnetic separation to obtain a magnetic product separated from the gangue and the castoff non-magnetic gangue through concentrating; performing the centrifugal high-gradient magnetic separation on the magnetic product separated from the gangue to obtain a magnetic product and the mica through concentrating. The beneficiation method provides two-stage operation, namely the pulsating high gradient magnetic separation and the centrifugal high-gradient magnetic separation, so that the weakly magnetic mineral rough concentrate without the mica or the weakly magnetic mineral rough concentrate containing low mica can be obtained.

The purpose of the present invention is to provide a heat pump heating apparatus that is able to continue two-stage operation without having to stop a high-stage compressor when the return temperature of a heat carrier reaches a prescribed high temperature and is hence able to mitigate the feeling of insufficient heating caused by the high-stage side compressor being stopped as well as the feeling of insufficient heating caused by frequent defrosting operations. To achieve this objective, this heating apparatus is provided with: an internal heat exchanger (second internal heat exchanger) in which a low-temperature refrigerant on the low-pressure side of a low-stage side refrigeration circuit and a high-temperature refrigerant on the high-pressure side of a high-stage side refrigeration circuit exchange heat; a bypass pipe for bypassing the internal heat exchanger; and a flow channel-regulating means for regulating the refrigerant circulation in the internal heat exchanger and in the bypass pipe.

A method for manufacturing a dental implant gingival graft fixing system includes: establishing three-dimensional alveolar bone data of a patient, wherein an alveolar bone comprises a healed implant; thickening an alveolar bone curve surface to form a preliminary model of a guide plate; making screw holes in the preliminary model to form a fixing guide plate model; establishing a three-dimensional model of a guide plate fixing part; making the bottom surface of the fixing guide plate model into a plane to form a mucous membrane taking guide plate model; making the fixing guide plate model into a tangible fixing guide plate, and molding the guide plate model. The dental implant gingival graft fixing guide plate is provided with screw holes, and the bottom face of the guide plate matches with the bone surface of the alveolar bone of to-be-implanted gingiva. The dental implant gingival graft fixing system comprises the fixing guide plate, the guide plate fixing part and the implant. When the guide plate fixing part and the implant are connectedly screwed in place, a cap portion of the guide plate fixing part is abutted against the guide plate, and the distance between the guide plate and the alveolar bone is about 3mm. Implanted gingiva fixation can be realized while implanted gingiva survival rate is increased during gingival graft in dental implant two-stage operation.

The invention discloses a compressor. The compressor comprises an air sucking component, an air supply component, an injection valve, a first-stage compression component, and a second-stage compression component and a first bearing component which are arranged on two axial sides of the first-stage compression component, wherein the first-stage compression component is provided with a first compression cavity; the second-stage compression component is provided with a second compression cavity; the first bearing component is provided with an intermediate cavity which is connected with an air discharging hole of the first compression cavity and an air sucking hole of the second compression cavity respectively; the air sucking component is used for supplying a first pressure refrigerant to the first compression cavity; the air supply component is used for supplying a second pressure refrigerant or a third pressure refrigerant to the intermediate cavity; when the second pressure refrigerant is supplied to the intermediate cavity, the second-stage compression component can work; when the third pressure refrigerant is supplied to the intermediate cavity, the second-stage compression component does not work; the injection valve is used for supplying the second pressure refrigerant to the first compression cavity. Through the compressor, the single-stage operation and the two-stage operation can be switched; and the compressor is high in efficiency during single-stage operation.

The invention discloses a customization joint bone cement prosthesis reinforcing supporting frame. The supporting frame is provided with a supporting frame main beam, a supporting frame secondary beamand a supporting frame net, the supporting frame net is arranged in the periphery of the supporting frame main beam and the supporting frame secondary beam, the supporting frame main beam is providedwith a supporting frame head and a supporting frame neck, and the supporting frame secondary beam is provided with a supporting frame handle. A preparation method comprises the steps of prosthesis three-dimensional model construction, prosthesis mold designing and manufacturing and prosthesis reinforcing supporting frame designing and manufacturing. According to the customization joint bone cement prosthesis reinforcing supporting frame, the supporting frame main beam, the supporting frame secondary beam, and a supporting frame net multi-pore net grid structure are designed, the supporting frame net is of a crossed curved surface multi-pore structure of an orthogonal multi-pore structure, bone cement in a liquid period is easily filled into the reinforcing supporting frame to effectivelyenhance the strength of the bone cement prosthesis, prolong the service life of the bone cement prosthesis and improve the success rate of operations, and the defects of easy fracturing caused by insufficient strength due to the fact that the mechanical characteristics of a pure bone cement prosthesis are hard and fragile after the pure bone cement prosthesis in the prior art is cured, and easy fracturing and smashing of the bone cement prosthesis when the bone cement prosthesis is taken out in a two-stage operation are overcome.

The invention relates to the technical field of beneficiation of lean hematite, in particular to a new method for flotation, regrinding and re-election, which includes one-stage roughing, one-stage beneficiation, and three-stage sweeping operations, and the concentrate of one-stage roughing operation is fed into The tailings of one stage of selection operation and one stage of roughing operation are fed into one stage of sweeping operation, and the fine tailings of one stage of selected middle ore return to one stage of roughing operation, the concentrate of one stage of concentration operation is flotation concentrate, and the tailings are fed The second-stage sweeping operation, the second-stage sweeping concentrate is returned to the first-stage sweeping operation, the tailings are fed into the third-stage sweeping operation, the third-stage sweeping concentrate is returned to the second-stage sweeping operation, and the first-stage sweeping operation The concentrate is re-grinded to greatly increase the monomer dissociation degree of the concentrate in the first stage of scavenging operation, and the re-grinded product returns to the original flotation process for further separation. Minerals are more fully sorted, which reduces the amount of medium ore circulation in each operation of flotation, and makes the flotation circuit form a virtuous circle. The grade of flotation concentrate is improved, the grade of flotation tailings is reduced, and the metal recovery rate is improved.

The invention discloses a method for utilizing two-stage continuous operation hot-alkali decomposition technology for processing rare earth ore concentrate. The two-stage operation manner with grinding leaching and agitation leaching is adopted for rare earth ore concentrate materials. Firstly, wet process grinding leaching is carried out on rare earth ore concentrate materials in a grinding leaching machine, then, the materials subjected to wet process grinding leaching is input into a rare earth ore concentrate hot alkali decomposition tank to be subjected to hot alkali decomposition agitation leaching, and ultrafine rare earth ore concentrate decomposition materials are prepared in the two-stage manner with wet process grinding leaching and hot alkali decomposition agitation leaching. According to the method for utilizing two-stage continuous operation hot-alkali decomposition technology for processing rare earth ore concentrate, the two-stage operation manner including grinding leaching and agitation leaching is adopted, the technology of carrying out grinding and leaching at the same time is achieved, the direct recovery rate of rare earth metals in the rare earth ore concentrate is increased, the alkali decomposition period is shortened, the process cost is reduced, the energy consumption and time are saved, the operating environment is greatly improved, the production efficiency is improved, and therefore, the method becomes a rare earth ore concentrate treatment method which is high in adaptability, clean, efficient, quick and capable of achieving continuous operation, and achieves the effect of treating rare earth ore concentrate in a reasonable, economical, environment-friendly and energy-saving manner.