333results about How to "Guaranteed reproducibility" patented technology

The invention provides a disperse dye composition suitable for basic dyeing, mainly comprising the following raw materials in percentage by weight: 40-95 percent of one or a plurality of blue dyeing components A with a structural formula (I), 1-25 percent of one or a plurality of red dyeing components B with a structural formula (II) and 4-50 percent of one or a plurality of orange dyeing components C with a structural formula (III). The disperse dye composition has a wide dependency range of pH values, and can dye in a pH value ranging from 4.0 to 10; dyed and woven fabrics with predominant color-fastness performance, such as full hues, washing fastness, and the like, can be obtained.

The invention relates to a device and method for testing the fuel cell stack leakage rate. The device comprises a helium tank and an intake manifold and further comprises eleven electromagnetic valves, a precise pressure sensor, a proportional pressure regulating valve, a safety valve, a fixed container, a corresponding pressure meter and pipelines. Compared with the prior art, a gas pressure maintaining test can be conducted, the leakage rates can be automatically and accurately measured in the inner leakage and outer leakage processes of an electric stack, and safety interlocking and automatic discharging are achieved. The volumes of a hydrogen cavity, an air cavity and a cooling liquid cavity of any electric stack are calibrated respectively, and eight types of common gas leakage rates of total leakage of the air cavity, total leakage of the hydrogen cavity, outer leakage of the air cavity, outer leakage of the hydrogen cavity, outer leakage of the cooling liquid cavity, leakage between the hydrogen cavity and the air cavity, leakage between the hydrogen cavity and the cooling liquid cavity and leakage between the air cavity and the cooling liquid cavity can be automatically calculated.

The invention provides a device and a method for testing normal-temperature and high-temperature compression stress relaxation of rubber. The device mainly comprises an upper plate, a lower plate, a limiter, a pressure sensor, a pressure head and a flange. The upper plate is fixed to the lower plate through the limiter. The pressure sensor is fixed at a center position of the upper plate and is located between the upper plate and the lower plate. The pressure head is fixed at another end of the pressure sensor. A rubber sample is fixed at a center position of the lower plate by the flange and contacts with the pressure head. The method comprises the following steps of preparing an appropriate rubber sample, assembling the device, fixing exactly the appropriate rubber sample at the center of the lower plate, contacting the appropriate rubber sample with the pressure head, removing the flange, putting the device into an aging test box for an experiment, and after the experiment is finished, determining compression stress relaxation coefficients of the appropriate rubber sample. Through the device and the method, normal-temperature and high-temperature compression stress relaxation tests are realized; real-time monitoring of compression stress variation is realized; and the accuracy, the repeatability and the reproducibility of a life prediction result are guaranteed.

The invention relates to carrier communication test equipment, which is characterized by comprising test bench body and a computer body, wherein the test bench body is connected with the computer body by Ethernet; and the computer body is operated to control the test bench body, change channel parameters and acquire test information. The equipment tests the performance of communication between an acquisition terminal and a carrier electric meter; and a design scheme of constructing low voltage power line carrier communication channels in the test equipment is put forward, so that a system counts communication results and measures the channel parameters in a continuous communication state to obtain index parameters of a current carrier communication channel, low voltage power line carrier communication equipment meets the requirements of related standards, and technical support is provided for the acceleration of construction of a power consumer power consumption information acquisition system and a robust smart power grid.

The invention discloses a preparation method based on an amphoteric cellulose composite material. Cellulose is used as a raw material to obtain amphoteric quaternary ammonium-sulfated cellulose, then the amphoteric quaternary ammonium-sulfated cellulose is used as a carrier of oxidized grapheme and chitosan, the amphoteric quaternary ammonium-sulfated cellulose, the oxidized grapheme and the chitosan can be powerfully combined under the actions of the covalent bond, the electrostatic attraction, the hydrogen bond and the like, and then is subjected to freeze-drying to obtain the amphoteric quaternary ammonium-sulfated cellulose, the oxidized grapheme and the chitosan ternary composited material. The composite material has the renewability, the degradability, green and environment-friendly effect and high-efficiency adsorbability, the condition is mild and easy to realize in the preparation process, and the cellulose can be reasonably and effectively utilized, therefore, the preparation method has good economic and social benefits.

The invention discloses an automatically backing weld method of a pipeline MAG, which is characterized by comprising the following steps: 1) hardware preparation; 2) prewelding preparation; 3) regulation and storage of a welding process, i.e. welding process parameters are input on a control platform of a control system PLC, comprising automatically backing weld process parameters and coverpass parameters; and 4) equipment running for automatically welding. The automatically backing weld processing method of the pipeline MAG of the invention improves welding efficiency, ensures the repeatability of weld joint quality, greatly weakens the requirement of the operating skill and labor intensity of workers and solves high technical requirements of automatically bottoming and welding which can not be realized by using the traditional welding processing method.

A gene chip for detecting viruses of leguminous plant is disclosed, several probes and nature-control collations are fixed on surface of solidoid carrier, the probes has the nucleotide sequence showed on from SEQ ID No.1 to SEQ ID No.80; the nature-control collations consists of the surface chemistry LUT, fluorescence labeling LUT, positive LUT, negative LUT, cross LUT and blank control. The advantages and innovations of the invention are following: practicability, quick-speed, and idiocrasy, and sensitivity, low activity cost, repeatability, stable and reliable results. The testing system can guarantee the repeatability and accuracy of results that is proofed by the repeatability and stability test, the system can be widely used in area of plant quarantine of the outbound and enter the country test and quarantine system, the safety supervision of plant source food, the diagnosis of plant virus in plant protecting station and the authenticate of pathogenesis in research of plant taxonomic virology. The gene chip testing call for detecting viruses of leguminous plant can be used in about 600 daily quarantine pursuits of leguminous plant source food.

The invention provides a bovine beta-casein quantitative determination kit. The kit mainly comprises a bovine beta-casein specific peptide of which the amino acid sequence is VLPVPQK, an isotope labeled bovine beta-casein specific peptide (VL*PV*PQK) and an isotope labeled bovine beta-casein internal standard substance of which the amino acid sequence is QSVLSLSQSKVL*PV*PQKAVPYPQRD). According to the kit, the ration is limited to be 1mg/100g, the reproducibility RSD less than 9.50 percent (n is equal to 11), the recovery in a food substrate is 73.41-93.88 percent (n is equal to 6), and the recovery in a powdered milk substrate is 91.62-107.28 percent (n is equal to 6); a sample is pre-treated simply and quickly, and is low in cost. The bovine beta-casein quantitative determination kit is applicable to multiple food substrates, and can be used for accurately quantitating macro and trace bovine beta-casein.

The invention discloses an amphoteric-cellulose-based composite material and application thereof. Quaternary ammonium-sulfonic acid cellulose serves as a carrier, grapheme oxide and chitosan are loaded in a blending manner, binding force among the three is utilized, and a quaternary ammonium-sulfonic acid cellulose/ grapheme oxide/chitosan composite porous material is obtained through freeze drying. The quaternary ammonium-sulfonic acid cellulose/ grapheme oxide/chitosan composite porous material comprises, by weight, 5-8 parts of quaternary ammonium-sulfonic acid cellulose, 0.5-3 parts of grapheme oxide and 0.5-3 parts of chitosan, is safe, non-poisonous and good in biocompatibility and degradability, has an orderly three-dimensional porous structure, good mechanical strength and efficient adsorption capability, can be used for water absorption and oil removal and processing of heavy metal ion waste water and organic waste water, and hopefully serves as a filtering material such as an air purification material and a medical adsorption material for use.

The invention provides a testing method for normal temperature and high temperature stress relaxation of a flat spring. Firstly, a to-be-tested spring sample is prepared, the prepared to-be-tested spring sample is an equal stress sample and has a symmetrical-shaped flat structure; secondly, installation and test preparation of testing equipment are performed, the testing equipment is provided with a base, lateral plates are fixed on the front and the rear sides of the base, the two ends of the to-be-tested spring sample are respectively placed on the lateral plates, the base and an upper plate are fixed together through a limiter, a pressure sensor is mounted on the upper plate, and a pressure head mounted at the lower end of the pressure sensor exerts pressure force onto the sample; then a spring stress relaxation test is performed, and the stress values at different time can be collected; and finally, the condition of stress relaxation loss of the material of the sample is determined. Through the method provided by the invention, the bending deflection of the sample, which is difficult to measure, is converted into electrical signals easy to measure, the work efficiency is improved, the method is simple, and the testing data is accurate.

The invention provides polymer gel particles, a preparation method thereof, composite gel particles containing the polymer gel particles and an application of the composite gel particles. The Young modulus of the polymer gel particles is 5-5000Pa, the average particle size is 100nm-100[mu]m, the polydispersity index is less than 0.5, and an organic solvent is not contained. The polymer gel particles are obtained by the following steps: performing cross-linking on a polymer aqueous solution to form a hydrogel with a Young modulus of 5-5000Pa, then performing preliminary crushing and refining onthe hydrogel, and using a fluid shearing method to prepare the polymer gel particles. The composite gel particles include the above polymer gel particles, and a functional substance supported on thepolymer gel particles. According to the method provided by the invention, organic solvents or surfactants are not used in the process of preparing the polymer gel particles, the obtained polymer gel particles are safe and reliable, the particle size is controllable in the range from the nanometer to the micrometer, the particle sizes are uniform, and the prepared composite gel particles can be used in the fields of biomedicines and the like.

The invention specifically relates to a method for detecting acute biological toxicity of sewage, belonging to the field of environmental water detection. A method for accurately detecting the acute biological toxicity of a sewage sample can be established by the following steps of: extracting and concentrating organic matter in a sewage sample, removing the interference of inorganic matter, and finally detecting by using fresh water luminous bacteria Qinghai vibrio Q67. The method can provide accurate final results, is stable and has good reproducibility. The method is the effective improvement of the traditional method.

A sandwiched-structure composite metal lithium negative electrode and a preparation method thereof belong to the technical field of a secondary battery. The sandwiched-structure composite negative electrode is formed by laminating a current collector, a lithium belt and an interface layer from bottom to top. The preparation method of the sandwiched-structure composite metal lithium negative electrode comprises the steps of firstly, preparing paste from an interface layer material, coating the paste on a metal foil or a separator, and drying for use; secondly, sequentially laminating the current collector, the lithium belt and the metal foil or the separator coated with the interface layer material, and rolling the three layers by a rolling machine; and finally, stripping the metal foil orthe separator of a sandwiched-structure surface layer obtained by pressing to further obtain the composite metal lithium negative electrode with the interface layer. The preparation method is convenient to operate and simple in process, automatic roll formation and continuous production can be achieved, and meanwhile, the product consistency and the reproducibility among batches can be ensured. With the sandwiched-structure composite metal lithium negative electrode obtained by the method, the lithium dendrites growth can be improved, and the cycle lifetime of the battery is prolonged.

The invention provides a full-automatic separation system and application of the full-automatic separation system in separation of polar components in edible oil. The full-automatic separation system comprises an automatic sample injection system 100, a column switching system 200, an automatic separation system 300 and a temperature control system 400. When the device disclosed by the invention is used for separating the polar components in the edible oil, automatic sample injection and automatic chromatographic column switching can be realized; multiple samples can be continuously treated, and high-flux quick separation is realized; meanwhile, full mechanical control is performed on sample injection, column switching and separated component collection, so that influence on an experiment due to manmade factors is avoided; by ultraviolet online monitoring and automatic flowing speed correction, a detection result is accurate and stable.

The invention discloses an all-biological-based resin composition and belongs to the field of environment-friendly materials. The all-biological-based resin composition comprises all-biological degradable material polylactic acid, biological-based carbonized diimine anti-hydrolysis agent, inorganic talcum powder nucleating agent and biological-based polyester material toughener with flexible molecular chains. The all-biological-based resin composition has high toughness, high hydrolysis resistance and excellent biodegradability, organic polymer parts contained in materials can be degraded completely, and the characteristic of renewability of raw materials of the resin composition is maintained.

The invention discloses an intelligent wearable pulse meter. The intelligent wearable pulse meter comprises a self-adaptive wrist strap and a measuring head unit, the pulse meter can be stably worn onthe left wrist or the right wrist by means of the self-adaptive wrist strap, and the measuring head unit is composed of four measuring heads capable of independently moving and longitudinal linear motion driving units; each measuring head is independently provided with two linear motion driving units, and the linear motion driving units can drive the tip end of each measuring head to automatically locate the positions of cun, guan, chi and the lower part of chi in the directions of X, Y and Z; pressure is automatically exerted, pulse signals under different pressure stimuli are stably monitored and recorded, a collection area is divided according to the five-zone six-area seven-layer method, five-part twelve-hou pulse feeling is achieved, the problems are effectively solved that accordingto a current wearable pulse meter, the collection stability is poor, the collection area cannot be accurately located and pressure cannot be exerted in a thinning and layered mode, and the intelligent wearable pulse meter is applicable to monitoring of human body key physiological information and early warning and diagnosis of serious diseases.

The invention relates to high-purity liquiritin prepared from glycyrrhizic acid powder and a preparation method thereof, and the method comprises the following main steps: taking the glycyrrhizic acid powder, adding an appropriate amount of dilute ammonia water for dissolution, filtering, adding an appropriate amount of organic solvent for extraction, concentrating the upper layer of an extraction liquid and getting a liquid extract of total flavonoids of liquoric root; taking the liquid extract of the total flavonoids of the liquoric root, adding an appropriate amount of water, stirring, dissolving, filtering, enabling a filtrate to pass through a polyamide column, firstly using an appropriate amount of water for eluting and removing water-soluble impurities, further using an alcohol solution with a certain concentration for eluting, collecting the eluate, performing vacuum concentration, placing, crystallizing, and getting a crude product of the liquiritin; taking the crude product of the liquiritin, adding an appropriate amount of solvent, dissolving, filtering, placing, crystallizing, filtering, drying, and getting the high-purity liquiritin; and adopting the high-performance liquid phase chromatography for determination, wherein the content range of the liquiritin is 80-95%. The liquiritin produced through the technical scheme provided by the invention has high purity, low cost, stable and controllable quality, and low requirement on equipment and is applicable to industrial production.

The invention provides a kit for quantitatively detecting bovine milk serum albumin. The kit comprises a bovine serum albumin specific peptide, an isotope labeled bovine milk serum albumin specific peptide, an isotope labeled bovine serum albumin internal standard, a proteolytic reagent and a quality control sample. The amino acid sequence of the bovine serum albumin specific peptide is LVNELTEFAK; the amino acid sequence of the isotope labeled bovine milk serum albumin specific peptide is LV *NEL*TEFAK; and the amino acid sequence of the isotope labeled bovine serum albumin internal standard is QCPFDEHVKLV*NEL*TEFAKTCVADESHAGC, wherein V* and L* are carbon and nitrogen isotope labeled amino acids. The kit can accurately quantitatively detect the bovine milk serum albumin in various milk-containing products by adopting the isotope labeled internal standard synthesized through researches and designing, ensures the result reliability, and also has the advantages of less reagent consumption and low detection cost.

The invention provides a test apparatus for ultraviolet aging acceleration of asphalt-based materials and relates to a test apparatus. The invention solves the problems of tedious operation steps, uneven specimen aging, large thermal aging interference, failure in precise temperature control and accurate quantitative analysis of UV radiation energy in an asphalt specimen aging test. A complex rotating disk is set in an environment; complex rotating disk comprises a main rotating disk; at least one ultraviolet light source is disposed above the main rotating disk; the bottom of the main rotating disk is secured to one end of a drive shaft, and the other end drive shaft of the is connected to the output shaft of a drive motor; multiple asphalt specimens are placed on the main rotating disk; an ultraviolet probe of an ultraviolet radiation meter is arranged on the main rotating disk; the reading unit of the ultraviolet radiation meter is disposed outside the environment box; a temperature sensor is located in the environment and close to the main rotating disk; and a data acquisition and control system is set outside the environment box and is electrically connected to the temperature sensor. The invention is used for material ageing test.

Encrypting a clear text by: providing a computer; using the computer to provide: a True Random Number table (TRN table); a Hyper-Key Identification table (Hyper-Key ID table); and a Key Identification position number (Key ID position number); using the Key ID position number to choose a Hyper-Key Identification (HKID) number; using the HKID to generate Hyper Keys; providing a clear text message to be encrypted; using a Hyper Key, Xor Hyper Encrypting the clear text file and the Hyper Key to produce a first level Crypt text file; using a second Hyper Key, Bit Scrambling the first level Crypt text file and the second Hyper Key to produce a second level Crypt text file; and using the second level Crypt text file, Null Bit Padding the second level Crypt text file to produce a third level Crypt text file.

An eigenprojection matrix (#14) is generated from a learning image group (#10), in which high-quality images and low-quality images are paired up, by a projection operation (#12) using a locality relationship, and a projection nuclear tensor (#16) that defines the correspondence relationship between the low-quality image and an intermediate eigenspace and the correspondence relationship between the high-quality image and the intermediate engenspace is created. A first sub nuclear tensor is created (#24) by first setting from the projection nuclear tensor, and a coefficient vector in the intermediate eigenspace is calculated by projecting (#30) an inputted low-quality image (#20) using the eigenprojection matrix and the first sub nuclear tensor. A high-quality image (#36) is obtained by projecting (#34) the coefficient vector using a second sub nuclear tensor (#26) created by second setting from the projection nuclear tensor, and the eigenprojection matrix. Consequently, highly accurate and highly robust image conversion that enables the relaxation of the input condition of an image that is a conversion source can be implemented, and also the reduction of the processing load, the increase of the processing speed, and the reduction of the required amount of memory can be achieved.

The present invention relates to a method for quickly enriching trace polypeptide or protein sample by using nano calcium carbonate particles in-situ polymerized polymethyl methacrylate (CaCo3-PMMA) as nano adsorbing agent and utilizing solid-free miniaturated matrix auxiliary laser analysis ion source mass spectrography to make direct analysis. The invented nano material not only can implement quick and high-effective enrichment of protein and polypeptide, but also has good compatibility with matrix auxiliary laser analysis ion source mass spectrography. Said invention can be extensively used in the field related to protein phylogeny.