704results about How to "Reduced Possibility of Contamination" patented technology

An arrangement of a mass intake air flow measurement device suitable for integrating a humidity sensing device as well as a temperature sensing device and a pressure sensing device is provided. A second bypass passage 501 bypassing a bypass passage 205 is formed and a humidity sensing device 500 is mounted in the second bypass passage 501. A second bypass passage inlet 502 and a second bypass passage outlet 503 formed in a wall surface of the bypass passage 205 are opened parallel to the direction of flow of air flowing in the bypass passage 205.

A filter cartridge for use with a filter head assembly and for filtering a stream of pressurized fluid. The filter cartridge comprises a housing enclosing filtering media, a retainer to releasably engage a receiver in a filter head assembly, and one or more rotationally engagable locks securing the filter cartridge to the filter head assembly upon the rotational engagement of the filter cartridge with the filter head assembly. The housing includes an upper end having therein entry and exit passages to permit fluid to enter the housing, pass through the filtering media and exit the housing. Rotational engagement of the filter cartridge with the filter head assembly causes the retainer and said the receiver to releasably secure the filter cartridge to the filter head assembly and to thereby permit fluid to travel from the filter head assembly through the entry passage and to permit fluid to pass from the exit passage into the filter head assembly. The locks help to resist the rotational disengagement of the filter cartridge from the filter head assembly.

The invention discloses a method for realizing approximate zero discharge of high-fluorine-content and high-nitrogen-content battery production waste water in the photovoltaic industry. The method comprises the following steps: feeding high-fluorine-content and high-nitrogen-content battery production waste water into a regulating tank for homogenizing; feeding into a fluorine-removing reaction tank, and feeding a reaction tank effluent into a sedimentation tank; feeding a supernatant in the sedimentation tank into a middle water tank; treating by virtue of a quartz sand filter and an active carbon filter, and feeding fresh water into a primary reverse osmosis membrane for treating; driving reverse osmosis membrane concentrated water to flow through a concentrated water induced acceleration crystallizing pond to precipitate calcium ions and fluorine ions in concentrated water on a seed crystal at a higher speed, effectively lower the concentrations of calcium ions and fluorine ions and increase the concentration multiple of a reverse osmosis concentration membrane, driving supernatant to flow through a cartridge filter, and feeding into the reverse osmosis concentration membrane for circularly concentrating; feeding a small amount of concentrated water on the reverse osmosis concentration membrane into an evaporator to greatly lower the evaporation cost, feeding steam condensed water into a recycling water tank for use as industrial water, and disposing evaporation residues as solid waste. In the entire process, no water pollutant is discharged.

The invention provides a disposable cell culture bioreactor manifold system for use in coupling sensors, fluid samplers, conduits, and the like, to a cell culture bioreactor in a sterile manner. The disposable bioreactor manifold system includes an externally attachable bioreactor manifold connector body for fluidly attaching modular sensor arrangements that measure physical variables and other parameters of medium contained within a bioreactor, as well as medium sampling components, and other connections, as well as at least one conduit fluidly connecting connecting the bioreactor manifold connector body with a pump for pumping fluids between the bioreactor and the bioreactor manifold connector body.

The invention relates to a watercraft texture wallpaper paint, characterized in that the invention comprises the following components: 31 percent to 35 percent of styrene-acrylic emulsion, 23.94 percent of superfine weight calcium, 1 percent to 2 percent of nano-titanium dioxide, 10 percent to 18 percent of titanium pigment, 8 percent to 9.8 percent of calcined kaolin, 1.2 percent to 1.8 percent of ethylene glycol, 0.2 percent to 0.5 percent of hydroxyethylcellulose, 0.8 percent to 1.5 percent of film forming additive, 0.15 percent to 0.25 percent of multi-functional additive, 0.3 percent to 0.5 percent of dispersant, 0.1 percent to 0.2 percent of wetting agent, 0.15 percent to 0.21 percent of defoamer, 0.08 percent of anticorrosion and insecticide, 0.8 percent to 2 percent of thickener and 20 percent to 22 percent of water. The invention is the watercraft texture wallpaper paint, is environment-friendly, has strong elastic tension, has good covering and anti-cracking effect on the fine cracking of wall, and has good scrape resistance performance, greatly enhancing the degree of wall surface protection; meanwhile, the invention still has strong waterproof performance, without color-changing and decortication and mildew and can fully solve the common problems existing in wall decoration.

The invention provides an unfreezing device and a refrigerator. The unfreezing device comprises an unfreezing device body and a high-frequency generator, wherein the unfreezing device body is provided with a cavity which is used for allowing foods to be unfrozen to be placed; and the high-frequency generator comprises one or more pairs of electrode plate assemblies arranged in the cavity. High-frequency waves generated by the electrode plate assemblies act on the foods to be unfrozen, so that all the molecules of the foods to be unfrozen are in the action of the high-frequency waves, the polarity of the polar molecules is subjected to high-frequency changes, the inside and the outside of the unfrozen foods are heated and unfrozen at the same time, the temperature of the unfrozen foods is uniform, the unfreezing speed is high, and the possibility of microbial contamination is reduced; besides, the foods to be unfrozen are quickly dissolved through a largest ice crystal dissolving band, so that the loss of dropping liquid is reduced, the nutrient loss of the unfrozen foods is effectively avoided, and the quality of the unfrozen foods is promoted; and besides, large foods can be unfrozen, and the user experience can be promoted.

The invention relates to a shallow groove isolation formation method. The method comprises the following steps: a semiconductor substrate with a groove is provided; pad oxide layers are formed on the bottom part and the side wall of the groove, and in situ annealing is performed; insulation substance is filled into the groove. The shallow groove isolation formation method of the invention can reduce the transmission frequency of the substrate, reduce the pollution, ensures the process to be simplified, and reduces the cost.

The invention relates to a modified polyvinyl chloride alloy ultra-filtration membrane and a preparation method of a modified polyvinyl chloride alloy hollow fiber ultra-filtration membrane. The modifier in membrane preparation solution is a macromolecular modifier, the main component in the macromolecular modifier is methyl methacrylate-methacrylic acid copolymer, the macromolecular modifier can also contain a certain amount of methyl methacrylate, and the finished membrane is modified by using the synergetic effect of the methyl methacrylate-methacrylic acid copolymer and the methyl methacrylate; and the membrane preparation solution consists of the following components in part by mass: 8 to 17 parts of polyvinyl chloride, 1 to 8 parts of macromolecular modifier, 4 to 18 parts of pore forming agent, 57 to 87 parts of solvent, and 0.2 to 1 part of stabilizing agent. The tensile strength, the elongation at break, the hydrophilic property and the surface flatness of the ultra-filtration membrane, particularly the hollow fiber ultra-filtration membrane prepared by adopting the membrane preparation solution and using a dry-wet method are greatly improved; the ultra-filtration membrane has high pollution resistance and pure water flux; and the adopted main materials have wide source and low cost, the membrane preparation cost is greatly reduced, and large-scale popularization and application of the ultra-filtration membrane in the water treatment industry are favorable.

The invention provides a klebsiella pneumoniae detection kit. The klebsiella pneumoniae detection kit comprises two pairs of primers, i.e., an inner primer FIP/BIP and an outer primer F3/B3, which use oppA gene of klebsiella pneumoniae as the target gene and is designed based on the loop-mediated constant-temperature amplification technology. The klebsiella pneumoniae detection kit has more comprehensive detection effect and low omission ratio.

The invention discloses a CRISPR-Cas based technology for normal-temperature/isothermal rapid detection of ribonucleic acid and a detection method. The invention aims to perform in-vitro ribonucleic acid amplification on multiple disclosed gentically engineered enzymes and chemical components and to realize amplification and detection of specific ribonucleic acid (RNA) or desoxyribonucleic acid (DNA) quickly in one step or two steps in normal-temperature/isothermal condition so that the detection of each nucleic acid is faster and more convenient. The method comprises the following steps: (1)performing nucleic acid extraction to obtain the RNA, single-stranded DNA or double-stranded DNA of a to-be-detected sample; (2) conducting a reaction with to-be-detected nucleic acid by using the combined enzyme of reverse transcriptase, transcriptase, ribonuclease H and CRISPR-associated protein 13 as well as a nucleic acid fluorescent probe in an isothermal condition, wherein if the to-be-detected nucleic acid is DNA, a pre-denaturation step is added before the reaction; (3) detecting the fluorescence signal to judge whether target nucleic acid exists in the to-be-detected sample.

The invention discloses a method for directly preparing a molding titanium matrix composite through titanium hydride powder. The method comprises following steps: blank preparing, wherein the titanium hydride powder and an additive are mixed and are manufactured into a powder compact through mould pressing; dehydrogenation, wherein the powder compact is heated, the heating rate keeps ranging from 50 DEGC/min to 200 DEG C/min until the temperature of the powder compact rises to 900 DEG C to 1500 DEG C, and the powder compact keeps warm for 5 minutes to 30 minutes at the selected temperature; molding, wherein the heated powder compact is moved into an extrusion device, extrusion is carried out at the certain pressure and the certain extrusion ratio so as to enable the powder compact to pass through an extrusion die, molding and solidifying are carried out, and the titanium matrix composite is formed; and cooling, wherein after extrusion is completed, the titanium matrix composite is cooled to the room temperature at the speed of 10 DEG C/min to 100 DEG C/min, and then is taken out. Raw material cost is reduced, the technological process is shortened, and introduction of impurities in the subsequent machining process is reduced. The method has the beneficial effects of being high in dehydrogenation speed, high in product compactness, and good in mechanical property.

The invention relates to a waste incineration flying ash metallurgical sintering stabilizer which is formed by mixing the following components with the mass percent: 20-30% of Fe2O3, 5-35% of CaO, 1-5% of H3BO3, 1-8% of C2FeO4.2H2O, 5-15% of C, 5-10 % of SiO2, 3-10% of Al2O3, 5-10% of MgO and 3-10% of CnH2n+2. The stabilizer is added into waste incineration flying ash according to a certain proportion, so as to lead dioxin in the flying ash to be in a stable state at the temperature below 500 DEG C and ensure elements such as chromium, cadmium and the like to exist as a compound with a stable form, thus reducing the extracting toxicity of the waste incineration flying ash and greatly reducing the possibility of pollution caused by dissolving out the dioxin and heavy metal that are produced in the process of transportation, pelletization, cold solidification and sintering.

The present invention provides a nitrogen-free ARC/capping layer in a low-k layer stack, which, in particular embodiments, is comprised of carbon-containing silicon dioxide, wherein the optical characteristics are tuned to conform to the 193 nm lithography. Moreover, the ARC/capping layer is directly formed on the low-k material, thereby also preserving the integrity thereof during an etch and chemical mechanical polishing process.

The invention provides a K-Ras gene mutation typing fluorescence quantitative PCR detection kit which comprises PCR mixed reaction solution, a peptide nucleic acid probe, a mutant type K-Ras-AllgloTM fluorescent probe and a positive control sample. The invention further provides a K-Ras gene mutation typing fluorescence quantitative PCR detection method which comprises the following steps: firstly designing a pair of PCR primers and the peptide nucleic acid probe according to K-Ras genes, respectively designing the AllgloTM fluorescent probe against K-Ras gene mutation sites, and adding the PCR reaction solution, the PCR primers, the peptide nucleic acid probe and the AllgloTM fluorescent probe in a reaction system for carrying out fluorescence quantitative PCR detection. The method adopts the PNA technology and is combined with the technology of the AllgloTM fluorescent probe, thereby being capable of quickly and accurately detecting the K-Ras gene mutation sites in various cancer tissues with high sensitivity, and having short time, simple operation and clear, intuitive and safe judgment and reading.

The invention discloses a nucleic acid extraction and PCR (polymerase chain reaction) amplification test integrated kit and a test method thereof. The kit comprises a nucleic acid extraction unit anda PCR amplification test unit, and can cooperate with an assorted instrument to complete a full-automatic process of nucleic acid extraction and PCR amplification test; in the process, no transferringoperation or manual intervention is needed. The nucleic acid extraction and PCR amplification test integrated solution realizes real automation, reduces the instrument cost, shortens the time of thewhole process, avoids the pollution in a nucleic acid extraction process, improves the purity of nucleic acid extraction and accelerates the PCR amplification process, so that the reliability of the experiment and the experimental efficiency are improved.

The invention discloses a deafness susceptibility gene mutation detection kit as well as a preparation method and application thereof, and relates to gene mutation detection. The kit comprises a kit body, a cover, a partition, an HHL (Hereditary Hearing Loss) PCR (Polymerase Chain Reaction) mixed liquor bottle A, an HHL PCR mixed liquor bottle B, an HHL PCR mixed liquor bottle C, an HHL PCR mixed liquor bottle D, an HHL enzyme mixed liquor bottle, an HHL standard control bottle, and an HHL negative control bottle. The preparation method comprises the following steps: preparing an amplification reagent and a contrast reagent firstly, arranging the amplification reagent and the contrast reagent in the bottles and finally, obtaining the deafness susceptibility gene mutation detection kit. The kit can be applied to screening of hereditary deafness genes and identification of deafness causing genes, so as to prevent deafness.

A lens module has a module body and a mating receptacle. The module body has a lens unit and an image sensing and processing unit, the image sensing and processing unit receiving light beams from the lens unit and producing an image signal. The mating receptacle is made of insulating material, which is detachably engaged with the module body and has conductive terminals formed therein for transmitting the image signal. An assembling method of the lens module includes the following steps. First, the mating receptacle is installed on a printed circuit board of an electronic device by a surface mounting technology. Second, the module body is installed in the mating receptacle to implement electrical interconnection between the module body and the printed circuit board.

A method for manufacturing a self-aligned metal silicide comprises the steps that: a semiconductor substrate is provided and at least a silicon area is arranged on the surface of the semiconductor substrate; a metal layer is formed on the semiconductor substrate and the first step of annealing process is applied to the semiconductor substrate and the second step of annealing process is applied to the semiconductor substrate; the metal layer is removed by etching. The thickness and resistivity of the metal silicide formed through the method of the invention have better consistence.