1605results about How to "Improve capture efficiency" patented technology

A seamless, self-expanding implantable device having a low profile is disclosed along with methods of making and using the same. The implantable device includes a frame cut out of a single piece of material that is formed into a three-dimensional shape. The implantable device may comprise an embolic filter, stent, or other implantable structure. The present invention also allows complicated frame structures to be easily formed from planar sheets of starting material, such as through laser cutting, stamping, photo-etching, or other cutting techniques.

A photocathode is formed on a monocrystalline silicon substrate having opposing illuminated (top) and output (bottom) surfaces. To prevent oxidation of the silicon, a thin (e.g., 1-5 nm) boron layer is disposed directly on the output surface using a process that minimizes oxidation and defects, and a low work-function material layer is then formed over the boron layer to enhance the emission of photoelectrons. The low work-function material includes an alkali metal (e.g., cesium) or an alkali metal oxide. An optional second boron layer is formed on the illuminated (top) surface, and an optional anti-reflective material layer is formed on the boron layer to enhance entry of photons into the silicon substrate. An optional external potential is generated between the opposing illuminated (top) and output (bottom) surfaces. The photocathode forms part of novel sensors and inspection systems.

Inventive methods and apparatus are useful for collecting magnetic materials in one or more magnetic fields and resuspending the particles into a dispersion medium, and optionally repeating collection/resuspension one or more times in the same or a different medium, by controlling the direction and rate of fluid flow through a fluid flow path. The methods provide for contacting derivatized particles with test samples and reagents, removal of excess reagent, washing of magnetic material, and resuspension for analysis, among other uses. The methods are applicable to a wide variety of chemical and biological materials that are susceptible to magnetic labeling, including, for example, cells, viruses, oligonucleotides, proteins, hormones, receptor-ligand complexes, environmental contaminants and the like.

The present disclosure provides a method for enriching for multiple genomic regions using a first bait set that selectively hybridizes to a first set of genomic regions of a nucleic acid sample and a second bait set that selectively hybridizes to a second set of genomic regions of the nucleic acid sample. These bait set panels can selectively enrich for one or more nucleosome-associated regions of a genome, said nucleosome-associated regions comprising genomic regions having one or more genomic base positions with differential nucleosomal occupancy, wherein the differential nucleosomal occupancy is characteristic of a cell or tissue type of origin or disease state.

The invention provides a method and a system for capturing system information, and a method for sending system information, the method comprises the following steps: when a user end (UE) is powered on, leading a network side to only send minimum system information to all UEs, when the UEs need other system information, sending request information to network side, sending system information of UE request on calling resource after the network side receives request information which is sent by UEs, and announcing request UEs and other UEs to read out. Since the network side not only announces the request UEs, but also announces other UEs to read system information, thereby improving capturing efficiency of system information.

The present invention discloses one kind of heat resistant filter material and its use. The heat resistant filter material consists of one base material layer and one combined filter layers, the base material layer is made of inorganic fiber and/or heat resistant organic fiber, and at least one filter layer contains both inorganic fiber and heat resistant organic fiber, with the diameter of the inorganic fiber being smaller than that of the heat resistant organic fiber. The heat resistant filter material is used in filter. It has excellent complexing performance between the inorganic fiber and the heat resistant organic fiber, high dust collecting efficiency, high dust impact resistance, high antiwear performance, high heat shrinkage tolerance, etc.

The invention relates to an integrated microfluidic chip for capture of cancer cells in whole blood. The integrated microfluidic chip for capture of cancer cells in whole blood comprises three inlets, an erythrocyte lysis unit, a leucocyte capture unit, a cancer cell capture unit and an outlet, wherein the three inlets, the erythrocyte lysis unit, the leucocyte capture unit, the cancer cell capture unit and the outlet are connected orderly. The leucocyte capture unit comprises a first diverter, a soft magnetic microcolumn array and permanent magnets. The first diverter is connected with the soft magnetic microcolumn array. The permanent magnets are arranged at two sides of the soft magnetic microcolumn array. The cancer cell capture unit comprises a second diverter and a capture microstructure array, wherein the second diverter and the capture microstructure array are connected orderly. Compared with the prior art, the integrated microfluidic chip for capture of cancer cells in whole blood has the advantages of high integration degree, simple operation, high cell capture efficiency, simple manufacture processes and the like.

A capturing method for high speed network data packet based on the zero-copy technology, relating to field of network flow capacity monitoring and analysis. The method comprises a computer at least with one network card; the computer is arranged with operation system and data packet capturing program; the data packet capturing program captures the data packet via the network card. The method comprises following steps: 1) initialization of the network card, 2) initialization of the data packet capturing program, 3) starting data capture, being characterized in that: steps of the starting data capture are: a, the network card of a hardware layer passes the received data packet to the network card driven program of the core layer via DMA way; b, the data packet capturing program of a user layer obtains the data packet received by the network card driven program via mapping way. The capturing method for high speed network data packet based on zero-copy technology of this invention implements high speed network data packet capture based on the hardware platform and zero-copy technology. The invention has advantages of low system expense, high efficiency of capture and low reclaiming cost.

An air curtain-assisted exhaust method and a device thereof are provided. Air curtain generators are disposed on a worktable to enclose an encircled area in the worktable. A receiving hood is disposed above the worktable, wherein the vertical lower part of the outer edge of the receiving hood completely covers the encircled area. Then, the air curtain generators are started to blow out air curtains toward an opening of the receiving hood, and the receiving hood is started to suck an air flow. A shielding space is defined by the air flow sucked by the receiving hood and the air curtains, so that the air curtains may guide a smoke generated inside the shielding space to the receiving hood to be exhausted, thereby achieving the effect of auxiliary exhaust, and may restrict the smoke in the shielding space to prevent the smoke from diffusing laterally.

The embodiment of the invention discloses a method and device for treating radioactive wastes. The method comprises the following steps of: putting nonradioactive inorganic wastes into a furnace body of a radioactive waste treatment device to form a thermal plasma area above the inorganic wastes by electrode arcing, and heating the putted inorganic wastes to form a molten pool; starting a coolingdevice to cool down the furnace body to a temperature of 25-150 DEG C so as to make the inorganic wastes attached to the inner wall of the furnace body be solidified to form a shell; putting radioactive wastes into the furnace body to pyrolyze organic elements of the radioactive wastes, and then exhausting the generated gas from the furnace body; and charging inorganic elements of the radioactivewastes into the molten pool to be molten, and discharging the molten inorganic elements out of the furnace body. During the implementation of the method and device disclosed by the invention, the furnace body does not need refractory materials, and the molten body is solidified in an area near the inner wall of the furnace to form the shell, thus the inner wall of the furnace does not directly contact with the molten body, radioactive nuclides are prevented from polluting the inner wall of the furnace, the device can be used for treating various wastes, the service life of the device is long and the amount of residual wastes is small.

A method of dewatering corn stillage solids comprising adding to the solids an effective coagulating and flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and coagulated and flocculated solids; and separating the water from the coagulated and flocculated solids using a dewatering device.

The invention relates to a circulating tumor cell detection chip and an application thereof. The above micro-fluidic chip is combined with deterministic lateral displacement and specific bio-affinity identification principles to realize synergistic high-efficiency and high-purity capturing and detection of circulating tumor cells in peripheral blood. A triangular microcolumn array modified with affinity identification molecules, such as a nucleic acid aptamer or antibody, and having a specific geometric arranging shape, is designed in the micro-chip. The rotating angle, the distance, the offset angle and other parameters of triangular arrays are regulated to control the flow behaviors of different dimensions going through micro-channels. The chip can realize three functions in order to improve the capture efficiency and the purity of the circulating tumor cells. A gas-driven sample introduction system is also designed in the invention, and can realize simultaneous control of a plurality of fluid paths through one gas pressure path.

The invention discloses a signal detection and judgment method and device in the capture of a weak satellite navigation signal. In a weak-signal environment, a high-sensitivity satellite navigation receiver needs to accumulate correlated results of a pseudo code for a long time so as to meet the sensitivity gain requirement of capture. The invention aims to reduce the SNR (Signal-to-Noise Rate) loss brought from a detection and judgment process of the correlated results by using a signal-based PAPR (Peak-To-Average Power Ratio) judging method and provides a self-adaptive treatment method for judging a threshold. Meanwhile, in the invention, the influence of a near-far effect is considered, and a judging module for removing cross correlation after primarily judging signal existence is provided so as to weaken the influence of the cross correlation interference of C/A (Coarse/Acquisition) codes. A control module carries out two-dimensional search on a capturer, and a method for detecting a maximum value falling trend is used for judging Doppler frequency shift existing in the current signal so as to shorten the search time of a frequency dimension and increase the capture efficiency. The invention is suitable for systems such as a GPS (Global Positioning System), BD-2 (BeiDou-2), and the like and can achieve the cold-boot capture sensitivity up to -145dbm.

An apparatus and methods for airborne or gas borne chemical and biological sample collection and detection in real time using optical or chemical techniques, the apparatus comprising a chamber for delivery of said flowing gas stream containing a substance, the chamber comprising a first wall including a first wall surface and a longitudinal inlet channel disposed within the first wall and terminating at an outlet edge at the first wall surface; a second wall including a second wall surface and a longitudinal outlet channel disposed within the second wall and beginning at an outlet edge at the second wall surface, the longitudinal inlet channel aligned with the longitudinal outlet channel, and the first wall surface separated from the second wall surface by a gap; wherein the longitudinal inlet channel the longitudinal outlet channel are adapted for delivering a liquid into the inlet channel, through the chamber, and out the outlet channel such that a gas-liquid interface may be formed in the gap of the chamber.

Band-edge aligned carrier blocking layers are introduced into wurtzite or zinc blende Gallium Nitride based diode laser and LEDs in order to prevent thermionic emission and the overflow of carriers at elevated operating temperatures. These blocking layers are located in the direct vicinity of the active zone of the light emitter, and are designed with material composition such that one of the band-edges of the layers is, either partially or fully, aligned with that of adjacent barrier or waveguide layer. This invention proposes GaN based QW structure with a AlGaN(AsPSb) electron-blocking layer on the p-side of quantum well and (InGa)AlN as hole-blocking layer.