253 results about "Standard material" patented technology

The invention concerns novel varistors based on zinc oxide and a method for making same, which consists in using as base products nanocrystalline powders obtained by high-intensity mechanical grinding and in subjecting the mixture resulting from said nanocrystalline powders a consolidating treatment such as sintering, in suitably selected temperature and time conditions so as to retain the smallest possible grain size of ZnO. The resulting varistors have a very fine homogeneous microstructure and an average grain size characteristically not more than 3pm, i.e. five times smaller than standard materials. Said novel varistors have a larger number of grain boundaries per unit length unit and therefore a much higher breakdown voltage. Said voltage is characteristically higher than 10 kV/cm and can reach 17 kV/cm which is almost one order of magnitude above the breakdown voltage of standard varistors. The non-linearity coefficient of the current-voltage curve is also improved, and is greater than 20 and can reach values as high as 60. Moreover, the leakage currents below the breakdown voltage of said varistors, are much lower.

The invention discloses an oriented chipboard and a processing technology. The chipboard is composed of three layers including two surface layers and one intermediate core layer, which are adhered together by adhesives; the processing technology uses rotary cut veneer wastes remained in a plywood production process as raw materials to substitute small-diameter standard materials, so that a large volume of wood is saved, and production cost is saved; and simultaneously, the length of the oriented chipboard can be increased by using the method, consequently, inherent mechanical property indexes of the oriented chipboard can be improved, and the oriented chipboard has higher carrying capacity; the oriented chipboard and the processing technology provided by the invention have the advantages that the rotary cut veneer wastes can be used as the raw materials, so that the large volume of wood is saved, the production cost is saved, the static bending strength and the elastic modulus of the produced oriented chipboard are synchronously increased, and the carrying capacity of the oriented chipboard is greatly improved.

Lightweight, small antennas are described that have decreased material and fabrication/processing cost. The antennas may be used in consumer electronics products such as cellular phones, laptops and PDA's. Some of the antennas and fabrication techniques also provide lower part count and increased reliability. All antennas are fabricated with standard materials currently available in high volume production.

A new class of phase change materials has been discovered based on compounds of: Ga; lanthanide; and chalcogenide. This includes compounds of Ga, La, and S (GLS) as well as related compounds in which there is substitution of S with O, Se and/or Te. Moreover, La can be substituted with other lanthanide series elements. It has been demonstrated that this class of materials exhibit low energy switching. For example, the GLS material can provide an optical recording medium with erasability 3-5 dB greater than the erasability of GeSbTe (GST) material which is the standard material for phase change memories.

The invention discloses a production line and production method for steel structure plates. The production line comprises a panel production line for processing panels, a double-end saw used for cutting standard materials, a steel structure forming production line used for steel structure processing, a welding operation station used for welding steel frame structures, and a plate nailing production line used for combining the steel structure plates. The production line for steel structure plates, provided by the invention, has the characteristics of high automation degree, and stable quality of produced steel structure plate products.

An analyte of a sample is transferred to an analytical instrument by introducing a quantity of a compound of a standard material into a vessel containing an adsorbent material; introducing a quantity of the analyte of the sample into the vessel; and transferring the analyte of the sample and the compound of the standard material to the analytical instrument.

The invention discloses a quantitative RT-PCR primer and probe and agent box of BCR-ABL fusing gene mRNA fluorescence with BCR-ABL fusing gene primer and probe sequence as SEQ ID NO1-4 and internal reference gene primer and probe sequence as SEQ ID NO5-7, wherein the agent box contains cell cracking liquid, water, RT-PCR reacting liquid, internal reference TBP RT-PCR reacting liquid, BCR-ABL fusing gene detecting probe, TBP internal reference gene testing probe, composite enzyme, standard material and comparing material; the box can test the expressive level of mRNA of P210BCR/ABL and P190BCR/ABL in the specimen, which provides the reference to diagnose, recurrent and treat chronic granulocytic leukemia and acute lymphocyte leukemia.

The invention provides a distribution network material plan management method and system, and the method comprises the steps: carrying out the matching of a network province company standard materiallibrary according to the simplified distribution network device typesetting of a region, and forming a branch company customized standard material library; predicting an annual material demand plan according to materials such as an annual comprehensive plan, a project feasibility plan and the like; determining a monthly object demand plan according to the engineering project comprehensive plan, the implementation progress of the engineering and the determined engineering construction scheme and the supply period of the unified purchase and distribution materials; according to the final matching result of the province company, an order is created in time, and the matching result is imported to form a material arrival and delivery tracking table; material change caused by engineering designchange and the like is coordinated in time by tracking the actual performance condition of unified purchased materials in time; and the design standard is reversely improved by comparing the difference between the material utilization and the plan in the project. The invention provides a distribution network material plan management method and system which can improve the material plan managementlevel of a unit and improve the professional operation capability of materials.

The invention discloses an up-and-down constant-temperature parameter identifying method for testing the thermal interface material performance. The up-and-down constant-temperature parameter identifying method comprises the following steps: step one, preparing a standard material thermal flow meter; step two, placing a thermal interface material between contact interfaces of two thermal flow meters, loading pressure stress, and heating the thermal flow meters forward; step three, amending measuring temperature of a test point; step four, calculating a contact thermal resistance R; and step five, measuring the thickness L of the thermal interface material, and calculating the equivalent heat conducting coefficient of the thermal interface material. According to the invention, a symmetrical testing structure which is amended by up-and-down constant-temperature parameter identification is adopted for measuring, the inconsistent error of temperature measurement caused by different contact thermal resistance of each temperature sensor and the thermal flow meters or incomplete linearity of temperature and the like can be eliminated, and further the performance of the thermal interface material with high accuracy can be measured on the premise that the thermal flow rate is ensured.

The invention discloses a liquid organic atomization and gasification device, which is mainly used for preparing a standard gas required in processes of manufacturing, production, verification and calibration of gas alarms from a liquid organic material. A liquid standard material is atomized in an atomizing air pipe through the inlet of an injector and is evaporated and gasified in an evaporating tube under the action of the gas in a blowing air pipe, and thus, the liquid standard organic substance is converted into a gaseous substance. The pushing rate of the injector is controlled by using an injection pump, so that the pushing rate of the injector is smaller than the maximum evaporation rate of the liquid standard substance. The temperature and pressure in an atomizing and gasifying system are measured, the concentration of the standard material from the outlet of the atomization and gasification device in a gas phase can be obtained by using the pushing rate of the injector and the flow metered by a flowmeter, and by conversion according to an equation of state of gas.

The present invention relates to a method for automatically detecting camera. Said method can compare the image short by electronic device built in the camera with a standard material, and can display compared result so as to make tester easily know that the shoot function of said electronic device is normal or not. Besides, said invention also provides the detection system of said detection method and storage medium for storing said detection method together.

The invention relates to a preparation method of a water content standard material. The method comprises the steps of: weighing the mass of a dried glass volumetric flask, adding propylene carbonate, 1-butanol and xylene in proportion, and weighing the mass of the mixed solution; measuring water in the mixed solution, and calculating the mass of water needing to be added according to a preparation target value; adding deionized water into the volumetric flask and mixing the solution well; shifting part of the mixed solution into an ampoule bottle, adjusting the humidity of a constant temperature and humidity chamber, monitoring water content variations over time under different humidity conditions; recording the humidity within the constant temperature and humidity chamber when the solution water content varies minimally; under a humidity condition with stable solution water content, charging ampoule bottles with the mixed solution separately, and sealing the ampoule bottles; taking the mean of the results measured by Coulometry and volumetric methods as the water content of a standard material; and evaluating the water uncertainty. The water content standard material prepared by the method of the invention is beneficial for improving the accuracy of a Karl Fischer water titrator measuring result.