71results about How to "Save costly" patented technology

This invention discloses a screen locating device based on CMOS digital imaging sensor which consists of no less than one optical pen, a screen, a optical lens, a CMOS digital imaging sensor connected to the optical lens, a processor module connected to the sensor and a PC connected to the module. This equipment shows many advantages such as structure briefness, principle simpliness, less image data to be processed and low cost.

An internal electron donor compound for preparing α-olefin polymerization catalyst component, including two kinds of electron donors; the proportion of the two kinds of electron donors in the compounding preparation of the catalyst is determined via designed experiments so as to obtain a catalyst component having good comprehensive performance or a particular performance. The electron donor compound of the present invention can be used in the preparation of α-olefin polymerization and co-polymerization catalyst component, particular the preparation of propylene polymerization catalyst component, and is applicable to prepare the propylene polymerization catalyst component by reacting magnesium chloride-ethanols complex compound carrier with titanium tetrachloride and electron donors, or to directly prepare the propylene polymerization catalyst component by reacting magnesium chloride, alcohols, titanium tetrachloride, and internal electron donor. In addition, also provided is a theoretical basis for selecting a proper electron donor combination from a plurality of electron donors.

The invention provides a large-size impeller processing technique in precise casting and belongs to the technical field of special metal article processing. The large-size impeller processing technique comprises the following steps of: firstly, utilizing plastic foam as a model, integrally adhering a pouring system foam mould with a casting foam mould to form a module, and then, coating a plurality layers of refractory materials on the outer surface of the module, and sintering to remove the pouring system foam mould and the casting foam mould to form a thin ceramic shell with a die cavity; putting the prepared thin ceramic shell in a sand box, guaranteeing the minimal distance from the outer wall of the thin shell to the wall of the inner cavity of the sand box to be 40-50mm, and making a pouring gate cup on the thin shell be 40-70mm higher than the sand box, filling resin sand between the sand box and the thin shell, and vibrating the sand box while filling the resin sand until the sand box is fully filled; heating the sand box to 350-500 DEG C; and finally pouring molten metal through a stopper ladle. The large-size impeller processing technique provided by the invention can both guarantee the casting dimension precision and good smoothness, but also guarantee no cold shut or crack on the casting, thereby greatly reducing the finishing workload of the casting, reducing the production cost, shortening the working period and improving the casting quality stability.

Provided are an optical network fault detection device based on noise signals and a detection method thereof. The device is characterized in that a noise source and a signal processing unit are arranged in a main optical fiber between an optical line terminal and an optical distribution network unit. The noise source includes spontaneous radiation noise amplified by an online optical amplifier or introduced noise signals and is located on the side of the optical line terminal. The method includes utilizing spontaneous radiation noise amplified by the optical amplifier in an optical fiber main line or introduced noise signals, conducting detection by coupling a wavelength division multiplexer into branches of the optical network, filtering optical signals of corresponding branches to be detected through a reflection type adjustable filter, conducting relative processing on returned detection signals and reference signals in the signal processing unit and achieving fault location through relative peak value of relative curves. The device and the method utilize noise wideband characteristics to achieve proper online location detection of the wavelength division multiplexing passive optical network, and are simple in structure, convenient to operate and accurate in optical network fault detection.

Disclosed is a glide-angle light for approach guidance of aircraft, comprising a housing with a light outlet opening in which a light channel with an optical axis is arranged, along which a light source for production of a light beam, a colored filter for splitting the light beam into a filtered beam component and an unfiltered beam component and a lens arrangement for focused emission of the light beam through the light outlet opening are arranged. Only a single light channel is arranged in the housing so that the glide-angle lights according to the invention can be produced at considerably less cost.

Method, arrangement and computer program product in an indoor base station for synchronization of phase and frequency with an outdoor base station. The indoor base station and the outdoor base station are comprised within a wireless communication network and are adapted to send and receive data in radio frames. The indoor base station is adapted to alternatively operate in a first synchronization mode and in a second operative mode. The method comprises the steps of entering the first synchronization mode, sending a request for random access to the outdoor base station, receiving FPACH adjustment information from the outdoor base station, synchronizing the phase and frequency according to the received FPACH adjustment information and changing mode into the second operative mode.

The present invention relates to a rolling apparatus (1') having work rolls (2') and, if appropriate, having intermediate rolls, which are mounted in a rolling stand by means of roll chocks (5) via radial bearings (3). The special design of the rolling apparatus (1') makes it possible to retrofit the rolling apparatus (1') with an axial displacement device (18) with particular ease. The present invention also relates to a process for converting, in particular for subsequently converting, a rolling stand without an axial displacement device into a rolling stand with an axial displacement device.

The invention discloses an LAMP (Loop-Mediated Isothermal Amplification) primer group and method for rapidly detecting ditylenchus destructor from complex samples. The LAMP primer group comprises a pair of outer primers F3/B3, a pair of inner primers FIP/BIP and a loop primer LF, and sequences of the primers are sequentially shown as SEQ ID NO. 1-5. The LAMP primer group and the detection method thereof disclosed by the invention have excellent specificity and sensitivity for detecting the ditylenchus destructor, individuals of the ditylenchus destructor in different insect stages (such as eggs, larva, female and male) can be detected, the ditylenchus destructor can be directly detected from multiple nematode mixed samples, plant tissue samples and soil samples, and the detection sensitivity can reach 1/1000 individual DNA. A novel detection method is provided for rapid detection and identification and early diagnosis of the ditylenchus destructor, and the method has the advantages ofbeing accurate, sensitive, stable and intuitive in result judgment. The LAMP primer group disclosed by the invention is simple and convenient to operate and high in practicality, and has important significances and application value on quarantine on ports and transfer and origin monitoring operations.

The invention discloses a fast detection method for high-resistance botrytis cinerea bacterial strains of carbendazim. The method can be used for performing dynamic monitoring and early warning on botrytis cinerea bacteria causing gray mold of crops for the resistance groups of the carbendazol. In the method disclosed by the invention, a molecular detection technology having the advantages of fastness, convenience, strong specificity, high sensitivity and low cost is established on the basis of a loop-mediated isothermal amplification technology (LAMP). The detection method comprises the following steps: designing 2 pairs of specific primers on beta tubulin of high-resistance bacterial strains of the botrytis cinerea bacteria for the carbendazol, performing LAMP amplification, and judging whether products are the high-resistance bacterial strains of the botrytis cinerea bacteria for the carbendazol or not according to the colors of reaction products. If the LAMP amplification products appear to be azure, electrophoresis patterns present ladder-shaped strips, and the product amplification is generated, the products are identified as the high-resistance bacterial strains of the botrytis cinerea bacteria for the carbendazol; if the LAMP amplification products present violet, the electrophoresis patterns do not have strips, and the product amplification is not generated, then the products are identified as non high-resistance bacterial strains of the botrytis cinerea bacteria for the carbendazol. The method is simple, convenient, fast, and low in cost and has important actual significance in the resistance risk assessment of the gray mold of the crops and reasonable medication.

The invention relates to a method for preparing a local enhancement aluminum matrix composite and belongs to the technical field of preparing metal matrix composites. Al powder, Ti powder, graphite powder and a pure Al block are used as raw materials. The method includes the following steps that firstly, the Al powder, the Ti powder and the graphite powder are prepared to form Al-Ti-C mixed powder, and the Al-Ti-C mixed powder receives ball milling and is evenly mixed; secondly, the Al-Ti-C mixed powder is pressed to form a preformed blank which is placed into a graphite mold to be preheated to 500 DEG C; thirdly, the pure Al block is smelted to 940 DEG C through a crucible resistance furnace and then fast poured into the graphite mold, the preformed blank is ignited, a synthetic reaction happens, and the local enhancement aluminum matrix composite is obtained. The method for preparing the local enhancement aluminum matrix composite has the advantages of being fast in reaction, simple in technology, capable of saving energy, efficient, good in filling capacity, high in connection degree of a matrix and enhanced particles and the like. In addition, enhancement phase TiC particles are prevented from being contaminated by impurities such as oxygen, the method can be applied to the field of composites which only need local enhancement, and an expensive enhancement phase is omitted.

A technology for machining a large-diameter gear features that the guide tracks of gear hobbing machine is elongated for meeting the size requirement of large-diameter gear and the extending beams, vertical post unit and oblique pull unit are additionally installed onto bench for increasing its load bearing power.

The invention discloses an LAMP primer group for fast detecting and identifying aphelenchoides ritzemabosi and a detection method thereof. The primer group comprises a pair of outer primers F3/B3, a pair of inner primers FIP/BIP and a loop primer LF; and the sequences of the primers are respectively and sequentially shown as SEQ ID NO.1 to 5. An LAMP detection method of the aphelenchoides ritzemabosi is built by using the LAMP primer group. An amplification product can be detected by an electrophoresis method or fluorochrome method; when stepped stripes occur in electrophoresis detection or when green fluorescence can be observed after the fluorescence dye addition, the result proves that the aphelenchoides ritzemabosi is contained in a sample to be inspected. The detection method can be used for detecting and identifying individuals of aphelenchoides ritzemabosi in different insect states (female insects, male insects, larvae or ova); the aphelenchoides ritzemabosi can be directly detected from various-nematoid mixed samples and plant tissue samples; the detection sensitivity reaches 1/100 single insect DNA; and the LAMP primer group and the detection method are particularly applicable to port and transfer quarantine inspection and production place monitoring.

The invention discloses an LAMP (loop-mediated isothermal amplification)-based method for rapid detection of a sclerotinia sclerotiorum strain with high resistance to carbendazim. The method can be used for dynamic monitoring and epidemic warning of field sclerotinia sclerotiorum for a carbendazim resistance group, and is a molecular technique established based on LAMP and used for rapid detection of the sclerotinia sclerotiorum strain with high resistance to the carbendazim. According to the detection method, two pairs of LAMP specific primers are designed on beta-tubulin (comprising 198 amino acid mutation sites) of the sclerotinia sclerotiorum strain with high resistance to the carbendazim, and LAMP is performed; whether the strain is the sclerotinia sclerotiorum strain with high resistance to the carbendazim is determined according to the color of a reaction product; if the color is sky blue (an amplification product exists), the strain is the sclerotinia sclerotiorum strain with high resistance to the carbendazim; and if the color is purple (the amplification product does not exist), the strain is the sclerotinia sclerotiorum strain sensitive to the carbendazim. The method is simple, convenient, fast and low in cost, and has important practical significance for sclerotinia sclerotiorum resistance monitoring and rational drug use.

The present invention discloses a kind of building section bar and the method of assembling the section bar into building member. The building section bar is produced through adding light burnt magnesite powder and saw dust into water solution of bittern crystal to make slurry via stirring; grouting the slurry in the mold with glass fiber cloth spread in the bottom and at the sides and 1-4 pieces of wood cores, spreading one other layer of glass fiber cloth, vibration to densify and solidification to obtain the section bar. During assembling, the building section bar is cut into required size, screw bolt holes and screw nut holes are drilled in the wood cores, screw bolts and screw nuts are set in separately, and the building section bars may be assembled into various building members through screwing.

The invention provides an integrative photovoltaic building solar panel. The solar panel comprises three parts, including a photovoltaic layer, lithium battery contravariant units and a foaming pinchplate layer, wherein the photovoltaic layer is a photovoltaic battery array of a solar silicon panel layer; each lithium battery contravariant unit comprises a lithium storage battery, a controller, an inverter, an AC distributor, a monitoring system, a DC load and an AC load which are connected by a circuit and manufactured into a cylindrical structure, and the cylindrical structure is filled ina preset hollow part of the foaming layer; the aggregate of the foaming pinch plate layer is a metal pinch plate structure of which the middle is foamed by perlite, and a plurality of cylindrical hollow parts for placing the lithium battery contravariant units are prefabricated inside the metal pinch plate structure. The photovoltaic solar panel for a building can furthest concentrate spaces, be used for generating electricity on site and reduce expenses and energy consumption in the transportation process of current, thereby avoiding additionally occupied precious building spaces for placinga photovoltaic array panel and realizing the integration of building structures, thus the photovoltaic solar panel can be applied to apricus walls or ceilings of buildings.

The invention discloses a lithium battery management system, which comprises N voltage acquisition circuits used for acquiring charging and discharging information of a lithium battery cell, wherein the voltage acquisition circuit comprises an analog front-end module and a displacement cache module; each analog front-end module of the N voltage acquisition circuits is cascaded with a micro-controlmodule through the corresponding displacement cache module, the time sequence switching of the voltage acquisition circuits is achieved to perform monitoring and management on each battery cell of the lithium battery, and except for the first-stage voltage acquisition circuit, a level switching circuit is connected between the displacement cache module and the micro-control module of the other voltage acquisition circuits. By using the analog front-end module, the cost is lower than that of the same digital front end on the market, an expensive isolation chip is saved, and the cost is furtherreduced; and a low-voltage control signal is converted into a control signal of a high-end cascade chip through the level switching module, the isolation problem of a high-voltage circuit and a weak-current circuit does not need to be considered, and the high-voltage problem and the failure problem of an isolation chip are avoided.