132results about How to "No loss of efficiency" patented technology

A catheter is provided including a tubular body having a proximal end and a distal end. The body includes a first lumen and a second lumen with a septum disposed therebetween. The proximal end includes a valve and a hub that are integral with the body. The hub includes a first conduit and a second conduit. The valve includes a first port and a second port that are rotatable, about a longitudinal axis of the body, to establish fluid communication between the lumens and the conduits. The distal end of the tubular body may be configured for insertion with a subject. The conduits may be connectable to a medical apparatus.

A heat exchanger for heat exchange between a first and a second fluid and comprising a cylindrical casing 2 , a cylindrical fluid conduit 5 arranged inside the casing such that an axially extending tubular space 8 is defined, at least one helical coil 9, 10 of a finned or corrugated tube being arranged inside the tubular space, and adjustable throttle means 17, 17 a , 18 adapted and arranged for adjustably throttling flow of the first fluid through the conduit 5 to adjust the flow of the first fluid through the conduit and the first tubular space for adjusting the heat exchange between the first fluid and the second fluid flowing through the helical coils 9, 10.

The invention relates to a method and system for detecting memory leak facing Xen virtualization environment during operation. The method for memory leak under Xen virtualization calculating environment during operation is provided. The method mainly includes: (1) performing dynamic analysis on memory usage action of a monitored program, grouping memory objects, and maintaining and updating related information on the memory objects; (2) detecting potential memory leak based on objected behavior characteristics; (3) and performing memory leak judgment according to related rules. Compared with the prior art, the method and system can detect the memory leak during operation in cross-operating system platform and cross-language development environment mode, is wide in application range, has good performance, can improve quality and development efficiency of a software development industry especially software products with limited memory, shortens period of software development, saves development cost directly, and can bring good economic benefit and social benefit.

The invention relates to the field of OLAP (On-Line Analytical Processing) aggregation technique and query optimization, and in particular relates to a multi-dimensional data cube increment aggregation and query optimization method, which more rapidly realizes the advantages of increment aggregation, high efficiency, small system load and convenience in maintenance through small-range aggregationof the increment data and collecting original aggregation and increment aggregation results during querying and solves the problem in the prior art. The method has the beneficial effects of high efficiency and small system load because the increment data are aggregated by using the characteristics of the increment data, and no reduction of the efficiency when collecting the original aggregation and a plurality of delta Cube aggregation results during querying.

An ejector includes a nozzle and a needle valve formed in a tapered shape. The needle valve controls a throttle opening degree of the nozzle from a minimum degree to a maximum degree while an end section of the needle valve is positioned on a downstream side with respect to a throat section of the nozzle. Besides, a cross-sectional area of a nozzle diffuser is formed to be substantially constant, downstream of the throat section. Thus, a cross-sectional area of a substantial refrigerant passage defined by an inner surface of the nozzle and the needle valve is gradually widened in accordance with the tapered shape of the needle valve. Therefore, pressure loss accompanied with a rapid expanding can be suppressed. As a result, the throttle opening degree of the nozzle can be controlled while improving nozzle efficiency and ejector efficiency.

The invention provides a capacity control type rotary compressor comprising a capacity control device and a rotary compressor. A closed shell of the rotary compressor is internally provided with a motor and a compression mechanism; the compressing mechanism comprises a first air cylinder and a second air cylinder, and a middle separation plate for separating the first air cylinder and the second air cylinder; a first piston does eccentric rotation in a first compression chamber of the first air cylinder; a first slide sheet is stored in a first slide sheet groove of the first air cylinder; the front end of the first slide sheet is abutted against the periphery of the first piston; a second piston does eccentric rotation in a second compression chamber of the second air cylinder; a second slide sheet is stored in a second slide sheet groove of the second air cylinder; the front end of the second slide sheet is abutted against the periphery of the second piston; and a cold medium filling groove which is simultaneously communicated with a second slide sheet chamber and the second compression chamber is arranged on the lateral slide face of the second slide sheet. The capacity control type rotary compressor disclosed by the invention has the advantages of simple and reasonable structure, flexibility in operation, low manufacturing cost, reliability in operation, high energy efficiency ratio and wide application range.

The invention discloses a controlled release preparation coated by a controlled release coating, with improved comprehensive performance for zero-order release in particular. The polymer controlled release coating, covered on a core material containing medicaments, of the controlled release preparation contains a water-soluble cyclodextrin derivative dispersed in a single molecule state and/or in a micelle state, wherein the average hydroxy substituted number (or DS) of the water-soluble cyclodextrin derivative on each glucose unit is not less than 5. The invention discloses a preparation method for the controlled release preparation. The medicament release of the preparation is affected little in vivo or in vitro and is relatively quick, the time lag is relatively low, the bioavailability of the medicament is high, and the medicament release storage stability and the production repeatability are improved; and the mechanical strength of the controlled release coating of the preparation is also improved and the like.

A wireless cellular network includes a plurality of cells, each cell including a base station for serving one or more mobile users. For controlling an operation within a cell of the wireless cellular network, a fuzzy logic is used. The input variables for the fuzzy logic include input variables determined on the basis of information only locally available in the cell.

The invention discloses a mechanical contact-type bidirectional switching powder laying system based on a powder bed. The mechanical contact-type bidirectional switching powder laying system comprises a forming horizontal plate, wherein linear guide rails are arranged on the forming horizontal plate; a bidirectional switching powder laying main body is erected on the linear guide rails; a linear motor slider is arranged on each of the left side and the right side of the bidirectional switching powder laying main body; and the bidirectional switching powder laying main body comprises a powder laying device powder inlet, limiting plates, a contact dual-rectangular sealing plate, powder laying and feeding openings and a scraper plate. According to the mechanical contact-type bidirectional switching powder laying system based on the powder bed, quantitative powder (twice powder laying quantity) is placed in a powder discharging hopper, the powder is placed in the powder laying device powder inlet through the powder discharging hopper under the gravity action, is uniformly distributed on two sides of a powder laying device under the action of left powder distributing openings and right powder distributing openings, the left powder distributing openings and the right powder distributing openings are in linear arrangement and equal in size and quantity, and powder feeding openings on two sides of the powder laying device are opened and closed to realize bidirectional powder feeding switching.

The invention discloses a matrix quantitative analysis method in intelligent transaction and a system thereof. The method comprises the following steps of: 1, establishing a database for matrix quantitative analysis, and determining a time period from the database, wherein the length of the period can be set through parameters of a matrix; 2, analyzing historical data, i.e., firstly counting average probability and average wave amplitude for highs and lows of a matrix with the same arrangement order in a next time period and then calculating market risk return rates of different periods respectively; 3, determining a transaction strategy according to the market risk return rate of the matrix in the current time period; 4, calling an intelligent transaction program according to the transaction strategy and starting automatic transaction; and 5, calling a risk evaluation system to evaluate a historical transaction record made by an intelligent transaction program to provide a risk grade for a risk of a transaction account, calculating a default point by using a discrimination model, and then calculating a default distance and default probability of the risk grade of the account through a KMV (Credit Monitor Model).

The invention discloses a power line inspection image automatic identification method based on a neural network and a power line inspection image automatic identification system thereof. The method comprises the steps that input images acquired in power line inspection are acquired, and the input images are inputted to a convolutional neural network; 2) a feature vector group is obtained, and the input images apply the feature vectors in the feature vector group in turn so that digital description of the select box of the target type and the target position is obtained; and 3) convolutional operation is performed on the target input image so that the select box of the target object and the target position is obtained, and the object and the position expected to be selected of the highest confidence are also obtained. An end-to-end training model is established so that the target object in the images can be automatically identified, power line inspection image automatic identification can be realized based on the neural network and the efficiency can be enhanced.

The invention relates to an electric propulsion redundancy control method for a ship. The method is characterized in that two electric propulsion control systems are arranged, wherein each electric propulsion control system has two control programs. During normal operation, each electric propulsion control system uses one control program to independently work, and at the same time, two programmable logic controllers mutually and regularly receive the operational data of the other control program. When a control failure occurs, normally one programmable logic controller undertakes the control operation of the other programmable logic controller so as to simultaneously operate the two control programs. When the control failure recovers, the programmable logic controller with failure recovery sends a signal to the control system operating normally, the programmable logic controller operating normally sends operational data to the recovered programmable logic controller, and the recovered programmable logic controller takes over the system control. When a control core of any one electric propulsion control system fails, the normal propulsion operation of the ship is not influenced, and the safety and the stability of the ship are improved.

The invention discloses a video sequence expression recognition system and method based on a self-attention enhanced CNN. The system comprises a feature enhancement CNN module, a self-attention mechanism module and a full connection layer. A video sequence is input into a feature enhancement CNN module, feature vectors output by the feature enhancement CNN module are input into the self-attentionmechanism module, feature vectors output by the self-attention mechanism module are input into the full connection layer, and the full connection layer maps the feature vectors into a sample marking space to realize classification; the feature enhancement CNN module adds a plurality of convolution layers in a backbone network, leads out a feature enhancement branch from a middle layer of the backbone network, fuses the output of the feature enhancement branch with the output of the backbone network, and replaces a full connection layer in the network with a global flat pooling layer. The system provided by the invention is lower in complexity, can effectively improve the accuracy of video sequence expression recognition, and has a wide application prospect in the fields of human-computer interaction, wisdom education, patient monitoring and the like.

The apparatus (1) has a winding body (3) for winding a hair strand. A winding body drive unit e.g. gear motor, rotatably drives the body around its longitudinal axis. A hair drive unit (7') i.e. grip, drives the strand on the body. An actuating unit (10) i.e. control button, rotatably actuates the body to allow a user to choose one rotation direction among two rotation directions. A control unit i.e. CPU, is programmed for controlling the body drive unit in reverse direction of the chosen direction when the control unit detects an operating state to cause the stopping of rotation of the body. An independent claim is also included for a method for curling a hair strand.

The invention provides a hardware method for building a TCP data stream connection. A hardware module is used to make deep analysis for the data packet, and in term of quintuple and state information to build communication connection for the packet. When using the hardware connection, each functional module works independently so that opening the TCP connection doesn't reduce the efficiency of other modules. Meanwhile RAM read writing speed by hardware is also very high to make the data format of read writing able to be simplified.

The invention relates to a method for automatic drawing and mapping of a network frame graph of a distribution network. The method comprises the following steps of initializing network frame connection information, identifying an equipment dictionary table in a network, determining the type of distribution network equipment and the number of connection points of distribution network circuits, and grouping network frames of different network numbers; carding the distribution network equipment and the distribution network circuits of each distribution network to form a node-branch incidence matrix; randomly determining coordinate values of a position array of equipment nodes according to the connection relation between the nodes; computing repulsion and attraction between the nodes; judging whether the total energy of the distribution network and the number of iterations exceed thresholds, and carrying out orthogonalization on the circuits between the nodes; and adjusting the crossed circuits, determining a cross-line position, re-determining the coordinate values of the position array of the equipment nodes and storing the coordinate values. The method is responsible for drawing a topology of an orthogonal graph of the network frames of the distribution network based on a force-directed algorithm through the connection information of the circuits in a database, the aesthetics and the consistency of the drawn graph are guaranteed, and the graphical rapid mapping of high-dimensional topological data is realized.

A phased array antenna includes a substrate, and dipole element arrays extending in concentric rings about an imaginary center point on the substrate. Each dipole element array includes dipole antenna elements arranged in an end-to-end relation and having a dipole size different than a dipole size of dipole antenna elements of at least one other dipole element array. A ground plane is adjacent the dipole element arrays, and a spacing between the dipole element arrays and the ground plane is different between the dipole element arrays having different size dipole antenna elements.

A process for the separation of pentavalent arsenic from an aqueous solution using an N-alkyl pyridinium-containing adsorption medium is disclosed. An oxidizing medium and process for the oxidation of trivalent arsenic to pentavalent arsenic with removal of the pentavalent arsenic so formed is also disclosed.

The invention provides a photoetching method of a superfine structure. The photoetching method comprises the steps that: a structure material layer and a first hard mask material layer are formed on a substrate; a first photoetching is carried out for forming a first hard mask pattern; a second hard mask material layer is formed on the first hard mask pattern; and a second photoetching is carriedout for forming a second hard mask pattern, wherein light sources of the first photoetching and the second photoetching are different and are selected from either an i line mercury arc lamp or an electron beam exposure system. According to the photoetching method of the superfine structure provided by the invention, the traditional optical photoetching technology and the electronic beam photoetching technology are combined for use, the electronic beam exposure is used for realizing the superfine pattern manufacture, and the optical photoetching is used for completing other patterns, so the manufacture problem of the superfine pattern can be effectively solved, and the efficiency is not reduced.

The invention discloses a reverse connection prevention circuit for a direct current power supply. The circuit comprises a polarity detection module, a relay and a contactor, wherein the polarity detection module is connected between the positive and negative input ends of the direct current power supply, and is used for detecting the normal connection or reverse connection of the direct current power supply, and outputting a corresponding signal; one end of a coil of the relay is connected with the output end of the polarity detection module, and a contact of the relay is connected in series with a coil of the contactor; and a main contact of the contactor is connected in series between the positive input end of the direct current power supply and a load. The circuit is safe, reliable and particularly effective to a high-power direct current system, and can be directly applied to an energy bidirectional flowing direct current power system to solve the problem of reverse polarity connection of the system, and the loss of system efficiency is avoided.

The invention relates to an electrical blower and an electric dust collector equipped with it. The invention aims to solve the problem that: the shell is distorted while the fan casing is pressed into; and the fan casing can not be kept on the set position, and the eccentricity and inclined installation of the fan casing can reduce the efficiency of the electrical blower. The electrical blower in the invention comprises: a shell for containing the motor, a fan casing installed on the shell covering the centrifugal fan and the diffuser; an extruding part is formed on the opening edge of one end of the shell; a fan casing installing component disposed from the extruding part to the centrifugal fan side or its opposite side; and an installing part contacting with the installing component and a non-installing part not connecting with the installing component are disposed on the inner surface of the fan casing.

The invention discloses application of a polymer intensifier in the production or the storage of a controlled release preparation, in particular to the controlled release preparation with zero order release. The invention also discloses the controlled release preparation with improved performance, in particular to the controlled release preparation with the zero order release. The controlled release preparation comprises a core material containing a bioactivator and a polymer controlled release coating which is coated on the core material, is provided with a plurality of medicine release micropores filled with air and contains the polymer intensifier, wherein the contact angle of a polymer and the polymer intensifier is less than 90 degrees, and the medicine release micropores are obtained by sublimating sublimable substances and/or degrading degradable harmless gases. The preparation has higher storage stability, higher production repeatability and better medicine release performance in the medicine release aspect; moreover, a controlled release membrane of the polymer intensifier has better mechanical behavior, therefore, the polymer intensifier has lower dosage pouring release possibility and higher administration safety.

The embodiment of the invention discloses a cache processing method and device. The method can comprise the following steps that: Cache receives a main memory address sent from a CPU (Central Processing Unit), wherein the main memory address comprises a Tag and an Index 1; and a Set1 corresponding to the Index1 is searched, and a Set2 corresponding to an Index2 is searched; and a matched Cache Line is searched in the Cache Line of the Set1 and the Set2. When the method is adopted, power consumption expenditures during Cache deficiency can be lowered, and Cache performance is improved.

The invention discloses an alkaline cyanide-free electro-deposition zinc-nickel alloy additive and an application thereof. The alkaline cyanide-free electro-deposition zinc-nickel alloy additive is prepared from an additive and ultrapure water. The additive is an organic additive or a mixture of the organic additive and an inorganic additive and can be applied to an alkaline cyanide-free electro-deposition zinc-nickel alloy plating solution to replace a traditional cadmium coating and cyanide electro-deposition zinc-nickel alloy process. According to the alkaline cyanide-free electro-deposition zinc-nickel alloy additive and the application thereof, through additive screening and adding, an electroplating process for electro-deposition zinc-nickel alloy is optimized, and a zinc-nickel alloy coating which is bright in appearance, high in hardness and excellent in corrosion resistance is finally obtained; the obtained plating solution is good in stability, dispersity and covering capacity, and the problems that a conventional alkaline zinc-nickel alloy plating solution is poor in stability and low in current efficiency, and an obtained coating is poor in quality are solved fundamentally; and the industrialized application feasibility of the alkaline cyanide-free electro-deposition zinc-nickel alloy additive is improved.