227results about How to "Reduce the number of copies" patented technology

This invention pertains to the design, fabrication, and uses of an electronic system which can actively carry out and control multi-step and multiplex reactions in macroscopic or microscopic formats. In particular, these reactions include molecular biological reactions, such as nucleic acid hybridizations, nucleic acid amplification, sample preparation, antibody/antigen reactions, clinical diagnostics, combinatorial chemistry and selection, drug screening, oligonucleotide and nucleic acid synthesis, peptide synthesis, biopolymer synthesis and catalytic reactions. A key feature of the present invention is the ability to control the localized concentration of two or more reaction-dependant molecules and their reaction environment in order to greatly enhance the rate and specificity of the molecular biological reaction.

The number of copies of a message to be transferred from one process to another process in a computer where each process has a differing address space may be reduced through the use of a message-passing data structure. The sending process generates an operating system service call to copy the message to be transferred into the message-passing data structure. The receiving process need not generate a system service request to the kernel in order to retrieve the sent message and also does not require an additional copy of the transferred message to be made by the kernel, in order to read the message content. The data structure permits a mapping of the message into the address space of the receiving process as well as the address space of the kernel. The inter-process mechanism for exchanging messages provides proper flow control, synchronization, and security when two processes exchange data.

The invention provides methods, systems, and computer readable medium for detecting ploidy of chromosome segments or entire chromosomes, for detecting single nucleotide variants and for detecting both ploidy of chromosome segments and single nucleotide variants. In some aspects, the invention provides methods, systems, and computer readable medium for detecting cancer or a chromosomal abnormality in a gestating fetus.

The invention relates to a shared-memory-based method for conducting communication among multiple processes. According to the method, a shared memory is managed in a circular queue mode, the shared memory is used for reading and writing conducted by the multiple processes in the circular queue mode, reading or writing is conducted by making a block as a unit, and the size of each block is controlled by a user; the shared memory is shared by the multiple processes, and the multiple processes comprise read-only processes and write-only processes; the multiple processes can conduct reading operation on the shared memory simultaneously, only one process can conduct writing operation on the shared memory, reading does not conflict with writing, and reading and writing can be conducted simultaneously. By means of the method, the number of times of copying conducted through a kernel when the processes exchange information is reduced greatly, throughput of a background system is improved, the overhead of the system is reduced, and performance of the system is effectively enhanced.

The invention relates to the technical field of an electric power protecting sleeve, in particular to a polrvinyl chloride electric power protecting sleeve which is good in heat resistance and processing performance and a processing method of the polrvinyl chloride electric power protecting sleeve. The polrvinyl chloride electric power protecting sleeve comprises the following components in part by weight: 100 parts of polyvinyl chloride resin, 0.5-5 parts of heat stabilizer, 3-10 parts of heat-resistant modifier, 5-20 parts of rigidity modifier, 0.5-5 parts of lubricant, 0.5-5 parts of processing agent, 0-25 parts of filler, 0-8 parts of impact-resistant modifier and 0-5 parts of pigment. The vicat performance and the heat resistance of materials can be improved due to the collaborative reinforcement of the heat-resistant modifier and rigidity-reinforcing and toughness-increasing particles; the adding parts of the heat-resistant modifier can be effectively reduced since each component adopts a multi-formulation technology and collaboratively takes effects, and the rigidity modifier is introduced particularly; and the rigidity, the heat resistance and the impact-resistant strength of a system can be increased.

The invention provides a data processing method based on a distributed storage system, and storage equipment. The method comprises the following steps: a storage node in any logic partition of the distributed storage system is selected as a main storage node; during data reading, after having received a reading IO request, the main storage node judges whether a target data object on the main storage node which is requested to be read according to the reading IO request is trusted or not; and if the target data object is trusted, the target data object is directly read from the main storage node and returned to an initiating end sending the reading IO request. The method has the advantages that if the target data object stored on the main storage node is trusted, data only needs to be read from the single storage node, and the reading of the data object from other storage nodes is no more needed; and compared with the Quorum mechanism, the method achieves the effect that the number of copies for reading operation is greatly reduced, so that the reading operation time delay is shortened, and the reading operation performance is improved.

The present invention has incorporated a non-lethal negative selectable marker gene into the vector backbone DNA of a DNA plasmid used to transform plant cells. These transgenes are designed to express a non-lethal gene product in plant cells that contain the vector backbone DNA of the DNA plasmid. The gene products of the non-lethal negative selectable marker gene are involved in plant hormone biosynthesis pathways, plant hormone substrate diversion, plant hormone degradation, plant hormone signaling or metabolic interference. The use of these DNA plasmids to transform plant cells provides for the enhanced production of commercially viable plants.

The invention discloses a method for manufacturing a quasi-three-dimensional micron-nanometer column array, belongs to the technical field of micron and nanometer materials and preparation thereof, and in particular relates to a manufacturing method of a micron-nanometer mushroom head ordered array. According to the manufacturing method, an elastomer and an injection molding technology are combined, the surface of a thermoplastic material substrate is hot-pressed and then cooled by a high-temperature-resistant elastomer template with a micron-nanometer pit array, or a material to be processed is poured on the surface of the elastomer and then is solidified, and a finished product is separated from the template to obtain a quasi-three-dimensional micron-nanometer structure. The method has the characteristics of simplicity and quickness in operation, low manufacturing cost, high controllability, high repeatability, wide material application and the like, is applied to the fields of super-hydrophilic/super-hydrophobic surfaces, surface plasma sensors, surface enhanced Raman spectroscopy, solar cells and the like, and provides conditions for productization of quasi-three-dimensional micron-nanometer structures.

The present invention provides interferon-alpha polypeptides and conjugates, and nucleic acids encoding the polypeptides. The invention also includes compositions comprising these polypeptides, conjugates, and nucleic acids; cells containing or expressing the polypeptides, conjugates, and nucleic acids; methods of making the polypeptides, conjugates, and nucleic acids; and methods of using the polypeptides, conjugates, and nucleic acids.

This invention discloses one operator boundary point, virtual special local network communication method and system, wherein the method comprises the following steps: symmetric interfacing virtual special local network service user point to entrance operator by QinQ form type to analyze message two layers of head and common labels; according to analysis head part and common label adding relative transfer information in self MAC transfer list and sending the message tot eh operator boundary point; exit operator boundary point receives message to analyze label and sends the message to user point; user boundary point analyzes private network label.

The invention belongs to the technical field of biomedicines, and in particular relates to application of seaweed polysaccharides. The seaweed polysaccharides can be taken as preparations for preparing anti-viral or immune medicines. Cell models and in-vivo animal experiments show that the seaweed polysaccharides can be used for significantly enhancing the animal immunity, and can also be used for promoting the generation of cell factors, the typing of T lymphocytes and the proliferation of mouse spleen cells so as to ensure that cellular immune reaction can be activated. The functional seaweed polysaccharides disclosed by the invention are natural polysaccharides which are extracted from seaweeds such as large seaweeds and kelps, gulfweeds, grateloupia sparsa, eucheuma muricatum, ulva pertusa kjellm, enteromorpha, gracilaria, ascophyllum nodosum and scytosiphon lomentaria, and can also be low-molecular-weight seaweed polysaccharides or seaweed oligosaccharides which are prepared by degrading the seaweed polysaccharides by virtue of different preparation methods. According to the application disclosed by the invention, a polysaccharide extract of single seaweed or a polysaccharide extract mixture of a variety of seaweeds can be taken as a novel anti-viral and immune enhancing agent to be applied to feeds of livestock, poultry, fish, shrimps and shellfish, and has wide application prospects.

The invention discloses a data sending and receiving method and device and a data processing system. The method is applied to a network card driving program, the network card driving program is located in a user mode space of an operation system, and the method comprises the steps of reading the target data written by a network card from a network card shared memory, wherein the network card shared memory is a memory buffer area of the network card shared by the driving program and the network card; determining the decapsulation information of the target data, wherein the decapsulation information comprises a target port number; according to the decapsulation information, decapsulating the target data, wherein the decapsulation process comprises a verification process, and the verificationprocess comprises the steps of verifying whether the target port number is a registered port number or not; and when the verification is passed, sending the de-encapsulated target data to a target service process. According to the embodiment, the data transmission can be carried out by bypassing the kernel mode space of the operating system, so that the utilization rate of the CPU is reduced.

This invention generally relates to a design and method for developing novel anti-tumor/cancer drugs, vaccines and therapies, using microRNA (miRNA) and its shRNA homologues/derivatives. More particularly, the present invention relates to the use of a nucleic acid composition capable of expressing mir-302-like gene silencing effectors upon delivery into human cells and then silencing mir-302-targeted cell cycle regulators and oncogenes, resulting in an inhibitory effect on tumor/cancer cell growth and metastasis. Mir-302 is the most predominant miRNA found in human embryonic stem (hES) and induced pluripotent stem (iPS) cells, yet its function is unclear. The present invention establishes that in humans mir-302 concurrently suppressed both cyclin-E-CDK2 and cyclin-D-CDK4/6 pathways and eventually blocked over 70% of the G1-S transition. Simultaneously, mir-302 also silences BMI-1, a cancer stem cell marker, and subsequently promotes the tumor suppressor functions of p16Ink4a and p14/p19Arf in inhibiting CDK4/6-mediated cell proliferation. Therefore, the present invention for the first time reveals the tumor suppressor function of mir-302 in humans. This novel finding advances the design and method for developing new cancer drugs, vaccines and therapies directed against multiple kinds of human tumors and cancers, in particular including, but not limited, malignant skin, prostate, breast and liver cancers as well as various tumors.

The invention relates to a cold-resistant flame-retardant PVC cable material containing the following components in parts by weight: 100 parts of PVC resin, 33-40 parts of DOP, 12-8 parts of DOTP, 3-5 parts of epoxidized soybean oil, 1-30 parts of vinyl acetate, 30-50 parts of inorganic filler, 4-6 parts of antimony trioxide, 0.1-0.2 part of polyethylene wax, 0.1-0.2 part of stearic acid and 2-5 parts of calcium and zinc composite stabilizer. The cold-resistant flame-retardant PVC cable material provided by the invention has more excellent flame retardant property, so that a cable is prevented from becoming a fire spreading source in a fire; the cold-resistant flame-retardant PVC cable material is remarkable in cold resistance, so that the cable can bear a colder environment; the parts of the used cold-resistant plasticizer and flame retardant are remarkably reduced, so that the formula cost is controlled more reasonably.

The invention provides an achieving method of a light-weight real-time TCP/IP protocol stack. A standard TCP/IP protocol stack is improved through protocol stack initialization, a socket interface module processing state, a transmission layer processing stage, a network layer processing stage, a media access control layer processing stage and a network card abstraction layer processing stage, system expandability is enhanced, system real-time performance is improved, and system overhead and communication delay are lowered.

The invention belongs to the field of audio/video acquisition, compressed encoding and storage and particularly relates to a memory buffer management mechanism supporting audio/video frame storage. The memory buffer management mechanism comprises N common data blocks and one expanded data block, and a data frame processing flow comprises three processes of acquisition, encoding and storage; and the acquisition process comprises the step of acquisition and output of audio/video data of fixed length, the encoding process comprises the step of output of compressed audio/video data of variable length, and the storage process comprises the step of output of 32K block data. The memory buffer management mechanism provided by the invention has the advantages that the compressed data output by an encoder is directly written into a block buffer before the length of the compressed data is determined; each frame of audio/video frame data is complete and continuous, and fragments cannot be generated due to 32K block segmentation; the data copy frequency of a system is decreased and the processing efficiency of the system is improved; and a reverse process can be used for restoring block media data from a disk into the audio/video frame data so as to play the role in reducing copy data.

The invention particularly relates to an automatic MySQL cluster deployment system and method. According to the MySQL cluster automatic deployment system and method, a database cluster adopts a one-master multi-slave architecture, and all internal connections adopt an SSL encryption mode; a service provided by a Kubernetes system is adopted to provide load balancing, and the size of a cluster is dynamically adjusted according to the number of copies based on a container service provided by the Kubernetes system. According to the MySQL cluster automatic deployment system and the method, the number of cluster nodes can be dynamically adjusted according to the service volume and the service peak value, the service stability is guaranteed in the service peak period, resources are released in the service low peak period, the availability of a database system is improved, and the resource utilization rate is increased; and meanwhile, the node communication encryption mode in the cluster ensures the security of data and the system. Therefore, the problems of database connection security and dynamic cluster size adjustment are solved.