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255results about How to "Stop transmission" patented technology

System and method for regulating message flow in a digital data network

InactiveUS7283471B2Fairness among all virtual circuits for buffer resourcesStop transmissionError preventionFrequency-division multiplex detailsDigital dataPathPing
A system includes a plurality of computers interconnected by a network including one or more switching nodes. The computers transfer messages over virtual circuits established thereamong. A computer, as a source computer for one or more virtual circuit(s), schedules transmission of messages on a round-robin basis as among the virtual circuits for which it is source computer. Each switching node which forms part of a path for respective virtual circuits also forwards messages for virtual circuits in a round-robin manner, and, a computer, as a destination computer for one or more virtual circuit(s), schedules processing of received messages in a round-robin manner. Round-robin transmission, forwarding and processing at the destination provides a degree of fairness in message transmission as among the virtual circuits established over the network. In addition, messages are transmitted in one or more cells, with the round-robin transmission being on a cell basis, so as to reduce delays which may occur for short messages if a long messages were transmitted in full for one virtual circuit before beginning transmission of a short message for another virtual circuit. For each virtual circuit, the destination computer and each switching node along the path for the virtual circuit can generate a virtual circuit flow control message for transmission to the source computer to temporarily limit transmission over the virtual circuit if the amount of resources being taken up by messages for the virtual circuit exceeds predetermined thresholds, further providing fairness as among the virtual circuits. In addition, each switching node or computer can generate link flow control messages for transmission to neighboring devices in the network to temporarily limit transmission thereto if the amount of resources taken up by all virtual circuits exceeds predetermined thresholds, so as to reduce the likelihood of message loss.
Owner:AVAGO TECH INT SALES PTE LTD

Controlled blasting construction method for rock foundation pit

The invention relates to a controlled blasting construction method for a rock foundation pit. The method comprises the following steps: detecting a cutting line; with the cutting line as a reference line, locating the periphery of a foundation pit to excavate a damping groove; vertically excavating a damping groove in the cutting line, wherein the interior of the damping groove is a blasting area and the exterior of the damping groove is a protective area; blasting and excavating the foundation pit: crushing rocks after blasting and removing slag; and cutting and blasting the foundation pit in a layered way: repeating excavation of the damping groove and blasting of the blasting area, excavating the damping groove in a layered way, blasting and excavating the foundation pit until the foundation pit is completely excavated. The damping groove is excavated in the excavating area of the rock foundation pit so as to stop blasting vibration propagation in the excavating area and reduce vibration influences on the rock wall and the surrounding structure of the foundation pit; a cutting reference is randomly corrected by using an outwardly moving rechecking line of the foundation pit cutting line so as to satisfy requirements on foundation pit excavating accuracy; the controlled blasting construction method for the rock foundation pit, provided by the invention, has the advantages of simple process and no damage to a foundation pit surrounding rock structure and is suitable for excavating various earth-rock foundation pits; both excavating efficiency and safety can be taken into account; and the foundation pit blasting safety and the foundation pit excavating accuracy are enhanced.
Owner:TAIXING FIRST CONSTR INSTALLATION

Mouse-typhus salmonella gene-deletion mutant strain without containing resistance marks, vaccine and application thereof

The invention relates to a mouse-typhus salmonella gene-deletion mutant strain without containing resistance marks, a vaccine and application thereof, belonging to the technical field of animal bacterium genetic engineering. The invention utilizes a mediated allelic exchange technique of recombinant suicidal plasmid for obtaining the mouse-typhus salmonella gene-deletion mutant strain (Salmonellatyphimurium SL13441) (the preservation number is CCTCC NO: M2010301) without containing the resistance marks. The mutant strain is deficient in an important toxicity regulating gene-cya gene in mouse-typhus salmonella, so that the toxicity of the mouse-typhus salmonella is obviously weakened after the deficiency of the cya gene, but the mouse-typhus salmonella still has immunogenicity. The invention also discloses the Salmonella gullinarum gene-deletion vaccine prepared by utilizing the gene-deletion mutant strain and an application of the gene-deletion mutant strain in preparing the vaccine, and the prepared vaccine meets the requirement on biological safety. The gene-deletion vaccine prepared in the invention can effectively prevent infection of Salmonella gullinarum and has the advantages of good stability and safety and low cost, is convenient to use and has obvious economic and social benefits.
Owner:HENAN UNIV OF SCI & TECH

Aerosol virus prevention central air conditioner sterilization device and air conditioning system

The invention provides an aerosol virus prevention central air conditioner sterilization device which comprises an optical cavity, an ultraviolet lamp and an air energy converter. The interior of theoptical cavity is of a hollow structure, and an air inlet and an air outlet are formed at the two ends of the optical cavity. The ultraviolet lamp and the air energy converter are arranged in the optical cavity together and are located between the air inlet and the air outlet. The ultraviolet lamp is a UVC waveband deep ultraviolet LED. The air energy converter generates ultrasonic waves, and theultrasonic waves and ultraviolet light emitted by the ultraviolet lamp act together so as to disinfect air flowing through the optical cavity. According to the aerosol virus prevention central air conditioner sterilization device, total-space and omni-directional efficient coupling is achieved through the combined action of ultrasonic waves and ultraviolet light in the optical cavity, spreading ofaerosol viruses during running of a central air conditioner can be effectively interrupted, the central air conditioner can be effective under spreading of aerosol viruses, efficient virus killing can be guaranteed, ventilation running of the air conditioner cannot be influenced, and meanwhile the safety of air conditioner crowds during dynamic virus killing is guaranteed.
Owner:CHONGQING MEDICAL UNIVERSITY

Preventing and treating method for grape root-knot nematode disease

The invention relates to a preventing and treating method for a grape root-knot nematode disease. The method includes the steps that 1, ecological treatment is performed, wherein Difulai microorganism fertilizer is applied, and HYT microorganism fertilizer is applied; 2, agricultural prevention and treatment are performed; 3, in quarantine inspection, quarantine inspection is performed strictly, seedlings are not introduced from the diseased region to be planted, and if it is necessary to introduce the seedlings from the diseased region to be planted, the seedlings should be strictly sterilized and soaked in hot water of 50 DEG C for 10 minutes; 4, physical prevention and treatment are performed; 5, biological control is performed; 6, chemical prevention and treatment are performed, wherein 1500-2000 g of 10% fosthiazate granules per mu are applied in holes in transplanting or mixed with fine soil to be applied in furrows after planting. In this way, the grape root-knot nematode disease can be effectively prevented, meanwhile, agricultural prevention and treatment, physical prevention and treatment and other measures are taken to perform comprehensive prevention and treatment to lower the average incidence of the grape root-knot nematode disease, the yield is increased, the grape grade is remarkably increased, and good economic benefits are achieved.
Owner:云南天质弘耕科技有限公司

Protocol security isolation system oriented to railway signal control network

The invention discloses a protocol security isolation system oriented to a railway signal control network. The protocol security isolation system is composed of a first communication interface 101, a second communication interface 203, a first processor 102, a second processor 202, a high-speed dual-port RAM communication buffer memory 302, a memory RAM, a power-failure memory FLASH, a human-computer interaction platform 105 and a power module 301. The first communication interface and the second communication interface intercept and capture data, corresponding the network, from a link layer, the data are sent to the first processer to be analyzed, an analysis result and communication content are sent to the human-computer interaction platform 105 to be displayed and are written into a data base, safe network data information is sent to the second processor through the high-speed dual-port RAM communication buffer memory 302 in a ferry mode at the same time, and the safe network information is sent to a target terminal or a target network through the second communication interface 203 driven by the second processor. According to the protocol security isolation system oriented to the railway signal control network, multiple network technologies are combined and real-time monitoring and security isolation are carried out on the existing railway signal control network.
Owner:SOUTHWEST JIAOTONG UNIV
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