34results about How to "Reduce special requirements" patented technology

The invention discloses a method for a preparing low density polypropylene foam section or beads by two-step extrusion molding, which comprises the following steps that: expandable master batch is prepared from 30 to 80 portions of polypropylene, 10 to 40 portions of foaming agent, 0 to 15 portions of foaming accelerant, 0 to15 portions of dispersant and 0 to 10 portions of nucleating agent at a temperature below the decomposition temperature of the foaming agent and above a viscous flow temperature of the polypropylene; 20 to 99 portions of polypropylene with high melt strength, 0 to 70 portions of common polypropylene and 1 to 10 portions of expandable master batch are plasticizated and extruded together; supercritical gas is added to perform the blending of the plasticizated and extruded mixture; and the product obtained is made to generate foamcores in a foaming nucleation apparatus to form the section or beads finally. A chemical foaming agent is partially decomposed and foamed during the plasticization and extrusion, so that the viscosity of fused mass is reduced, the dissolution and dispersion of the supercritical gas are facilitated, and a problem that a foam imploding is likely to happen in a secondary forming process so as to influence the quality and appearance of secondarily formed product is solved as the chemical foaming agent retained in molding beads can be decomposed and foamed again during the secondary processing.

The invention provides a novel stem-loop oligonucleotide probe which is provided with the initial status of a stem-loop secondary structure and consists of a loop part and a stem part. The stem part is a hairpin structure which is formed from two complementary base sequences that are combined through hydrogen bond. An identification region which is combined with the specificity of a target molecule is mainly composed of the stem part sequence of the probe. When no target molecule exists, the identification region exists as the hairpin structure of the initial status. When the target molecule exists, the hairpin structure of the stem part disintegrates when the target molecule is combined with the specificity of the identification region, and the probe or the target molecule can produce signal differences that can be detected. The identification region of the invention probe specificity combined or complementary hybrid target molecule mainly or completely bases on the oligonucleotide sequence of the stem part structure. And the oligonucleotide sequence which competes with the target molecule exists in the probe molecule. Therefore, the probe of the invention is provided with higher specificity.

The invention belongs to the technical field of surfactants, and provides a method for preparing a cationic gemini surfactant (CH3(CH2)m-N(CH3)2-CH2CH(OH)CH2-N(CH3)2(CH2)nCH3.Cl2) by taking epoxy chloropropane and alkyl dimethyl tertiary amine (CH3-(CH2)n-N(CH3)2, wherein n equals to 7, 9, 11, 13, 15 or 17) as raw materials and taking 2-hydroxyl-1.3-propylidene as a linking group. The method provided by the invention overcomes the defect in the prior art that one extremely excessive material is required for improving the reaction yield, dispenses with separation and purification procedures for a finished product, is short in reaction period, leaves no epoxy chloropropane in the finished product, and is suitable for industrial scale production.

The invention relates to a driving device for a pulse laser. The driving device comprises a drive and power supply module and a laser module; the drive and power supply module comprises a power supply source unit and a pulse generating unit; the power supply source unit is used for supply power to the laser module and the pulse generating unit; the pulse generating unit is used for generating electrical pulses according to a required pulse parameter; the laser module comprises a pulse level conversion unit, a pulse current switch and the pulse laser; the pulse level conversion unit is used for stepping up the electrical pulses generated by the pulse generating unit to a required electrical level so as to meet the driving requirements of the pulse current switch; the pulse current switch is used for driving the pulse laser; the power supply source unit is respectively connected with the pulse level conversion unit and the pulse laser through power supply leads; and the pulse generatingunit is connected with the pulse level conversion unit through a coaxial cable. According to the driving device for the pulse laser, the short driving distance of the pulse laser can be prolonged, and the driving quality can be improved.

The invention discloses an inherent frequency measuring device for 600 DEG C high-temperature thermal vibration coupling test of a high-speed cruise missile airfoil surface. The device comprises a missile airfoil surface structure test piece, a quartz lamp heating array, a vibration exciter, a ceramic extension rod, an acceleration transducer, a computer and a heat insulation baffle plate. In the high-temperature thermal vibration coupling test of the cruise missile airfoil surface, the missile airfoil surface is quickly heated by using the quartz lamp heating array and generates random vibration through the vibration exciter at the same time to form a 600 DEG C high-temperature thermal vibration coupling test environment. The rigid ceramic extension rod with high rigidity and high temperature resistance is arranged on the missile airfoil surface to guide the vibration signals on the missile airfoil surface out of the high-temperature thermal field, and the high-temperature resistant lightweight ceramic fiber heat insulation baffle plate is used for implementing thermal diffusion prevention shielding for the radiation thermal field. The normal temperature acceleration transducer arranged at the cold end of the ceramic extension rod dynamically tracks and measures the vibration signals guided to the missile airfoil structure of the normal temperature zone to acquire the change rule of the inherent frequency of the missile airfoil surface under the high-temperature thermal vibration coupling test environment; and the device provides an effective dynamic high-temperature thermal vibration coupling test means for researching and manufacturing high-speed cruise missiles.

The invention provides a stereopicture display, comprising a display component and an actuating component, wherein the display component comprises a backlight module, a liquid crystal display panel and a cylinder lens raster which are orderly arrayed from inside to outside, wherein the backlight module is used for transmitting a light source to the liquid crystal display panel; the liquid crystal display panel is used for displaying pictures; the cylinder lens raster is arranged between the liquid crystal display panel and a viewer; the cylinder lens raster comprises a support part and an optical part which is fixed on the support part; the actuating component comprises at least two coils having the same magnetic field and a plurality of first magnets; the coils are respectively arranged on two opposite sides of the support part in parallel and are electrically connected with a power source; the first magnets are respectively fixed on two opposite sides of the support part and respectively adjacent to the coils; polarities of opposite poles of every two first magnets are opposite; the coils are controlled to be in mutual attraction or mutual repulsion with the first magnets by controlling the current direction and the current frequency of the coils so that the cylinder lens raster can reciprocate in the direction parallel to the liquid crystal display panel.

The invention provides an improved preparation method for agomelatine. The method comprises the following steps of: carrying out reduction reaction with (7-methoxy-1-naphthyl) acetonitrile used as a starting raw material and methanol used as a reaction medium in the presence of nickel chloride hexahydrate and a reducing agent, and then carrying out acetylation reaction with acetic anhydride to generate agomelatine; and separating and purifying a reaction liquid after reaction, drying, decoloring and recrystallizing to obtain agomelatine. The preparation method provided by the invention employs a one-pot synthesis process, shortens synthesis steps, and reduces the difficulty in product purification caused by multiple secondary reaction; the reaction conditions are mild, and the cost and potential safety problem are reduced; a catalyst for the reaction is low; and the product acquired by the process has high yield and high purity, thus promoting the industrial production of agomelatine.

The invention relates to a scrap steel preheating system for an electric arc furnace, which realizes the preheating for steelmaking raw materials for the electric arc furnace by fully utilizing the physical and chemical waste heat of high-temperature flue gas of the electric arc furnace and enables a dust removal system to filter and cool the high-temperature flue gas to achieve the purposes of energy saving, reduction of consumption, emission reduction and environment protection as well as improve the steelmaking production ratio of the electric arc furnace and to realize the investment and alteration of preheating scrap steel by high-temperature flue gas in a current old factory workshop. The scrap steel preheating system for an electric arc furnace comprises scrap steel preheating basket mechanisms and a basket rotation swing mechanism; the basket rotation swing mechanism is respectively connected with the scrap steel preheating basket mechanisms positioned at a scrap steel receiving position and a scrap steel preheating position through swing supporting frames; and a high-temperature flue gag water-cooling flue and a scrap steel preheating cap are arranged between the basket rotation swing mechanism and the upper end of the scrap steel preheating basket mechanism at the scrap steel preheating position.

The invention belongs to the technical field of surfactants. The invention provides a method using epichlorohydrin and alkyl dimethyl tertiary amine (CH3-(CH2)n-N(CH3)2, n=7, 9, 11, 13, 15, 17) as raw materials, with 2 Preparation of a series of cationic gemini surfactants CH3(CH2)mN(CH3)2-CH2CH(OH)CH2-N(CH3)2(CH2)nCH3·Cl2 with -hydroxyl-1,3-propylene as linking group method. The method of the present invention overcomes the defect that a large excess of one material must be used to increase the reaction yield in the prior art, and the separation and purification step of the finished product can be omitted, the reaction cycle is short, the finished product has no epichlorohydrin residue, and is suitable for industrial scale production .

The invention discloses a caspofungin analogue of formula 3, its preparation method and application.

The embodiment of the invention discloses a testing system, a testing method, a testing structure and a manufacturing method of a thin film material. The testing system comprises a support framework and tension equipment, wherein the support framework comprises fixing parts and a protecting strip; the fixing parts are positioned at both ends of the support framework, and the protecting strip is used for connecting the fixing parts at the both ends; the fixing parts and the protecting strip form a hollow structure in an enclosing way; the fixing parts at the both ends are used for fixing both ends of the testing structure; a clamp is arranged on the tension equipment, and is used for clamping the fixing parts at the both ends of the support framework and both ends of the testing structure to perform tension test. The testing system has the advantages that the single-axis tension testing of the thin film material is simple, and the special requirement on the tension equipment and the clamp is lowered.

The invention provides a new industrial production method for preparing agomelatine through hydrogenation, comprising the steps of mixing a compound as shown in a formula (II) with an acylation reagent in an anhydrous solvent; adding an acid-binding agent and a catalyst; introducing industrial hydrogen while stirring; and reacting under a certain pressure, thereby obtaining a compound (I). The method is characterized in that (7-methoxy-1-naphthyl) acetonitrile is taken as the raw material and the acylation reagent and the acid-binding agent are added, and finally, the target compound N-[2-(7-methoxynaphthalene-1-yl) ethyl) acetamide is prepared through catalytic hydrogenation. Compared with the prior art, the method is short in reaction time, few in reaction byproducts, high in reaction yield, simple in posttreatment, stable in product quality, low in production cost, and suitable for large-scale industrial production.

The invention discloses a method for a preparing low density polypropylene foam section or beads by two-step extrusion molding, which comprises the following steps that: expandable master batch is prepared from 30 to 80 portions of polypropylene, 10 to 40 portions of foaming agent, 0 to 15 portions of foaming accelerant, 0 to15 portions of dispersant and 0 to 10 portions of nucleating agent at a temperature below the decomposition temperature of the foaming agent and above a viscous flow temperature of the polypropylene; 20 to 99 portions of polypropylene with high melt strength, 0 to 70 portions of common polypropylene and 1 to 10 portions of expandable master batch are plasticizated and extruded together; supercritical gas is added to perform the blending of the plasticizated and extruded mixture; and the product obtained is made to generate foamcores in a foaming nucleation apparatus to form the section or beads finally. A chemical foaming agent is partially decomposed and foamedduring the plasticization and extrusion, so that the viscosity of fused mass is reduced, the dissolution and dispersion of the supercritical gas are facilitated, and a problem that a foam imploding islikely to happen in a secondary forming process so as to influence the quality and appearance of secondarily formed product is solved as the chemical foaming agent retained in molding beads can be decomposed and foamed again during the secondary processing.

The invention relates to a metal component detection method and device based on a spectrum analysis technology. The metal component detection device comprises a sampling robot, blowing equipment, a pulse laser, spectrum detecting equipment, spectrum analysis equipment and control equipment, wherein the ultrashort pulse output end of the pulse laser is opposite to a sample chamber; the ultrashort pulse output end of the pulse laser is aligned with a spectrum collection lens group in the spectrum detecting equipment; the air outlet of the blowing equipment is aligned with the sample chamber; the sample chamber comprises a tray and a transparent outer cover above the tray; the sampling robot comprises a first mechanical arm and a second mechanical arm. Through the adoption of the method and device, non-contact metal component analysis is realized through laser, automation process is realized through the sampling robot, artificial participation is not required, ultrashort pulse laser is adopted, and the device has good spectral characteristic, and is simple in structure, convenient to apply and suitable for large-scale promotion and application.

The invention discloses a preparation method of organized half-mature bacterial fertilizers for orchids. The method comprises the following steps: taking colza cakes and potassium sulfate as raw materials, inoculating various good bacteria in chestnut leaves at orchid native home into the raw materials, then stacking the raw materials to ferment, controlling the fermenting process of the raw materials in a water supplementing and stack-turning manner during the fermenting process, and obtaining the organized half-mature bacterial fertilizers after stacking and fermenting for 15 to 20 days. The organized half-mature bacterial fertilizers prepared by the invention have the advantages of immature fertilizers and full-mature fertilizers, are rich with flora and metabolic products of flora suitable for growth of orchid roots, are especially suitable for cultivation of edaphic orchids, and obtain favorable cultivating effects after being cultivated for two years. The organized half-mature bacterial fertilizers can serve as not only fertilizers for orchids but also strains of orchid planting materials.

The invention relates to a spectrum analysis system and a spectrum analysis method for component detection. The spectrum analysis system is applied to a metal component analysis device. The spectrum analysis equipment comprises a noise-reducing treatment module, a correcting and modeling module, a detecting and analyzing module and a communication module, wherein the noise-reducing treatment module is used for performing noise-reducing treatment on the spectrum data of a corrected metal sample and on the spectrum data of a detected metal sample; the correcting and modeling module is used for modeling with chemometrics software based on the spectrum data of the corrected metal sample to obtain a metal component measuring model; and the detecting and analyzing module is used for analyzing by using the metal component measuring model and the spectrum data of the detected metal sample. By adopting the technology, a correcting model for metal component analysis is established by combining chemometrics and modeling for selectively extracting information related to a sorted target and inhibiting influence of non-related characteristics and noise, so that influence on spectrum caused by various non-target factors can be effectively eliminated, and the technical effect of better spectral analysis is achieved.

The invention discloses a method for hoisting an FPSO (floating production storage and offloading) flare tower by using a floating crane. The method comprises the following steps that the flare tower is overturned by using the floating crane under the assistance of a crawler crane in a flare tower hoisting area, then, the connection between the crawler crane and the flare tower is released, the floating crane is moved to move the flare tower to a position above a flare tower base on an FPSO, and then, the flare tower is slowly lowered, the flare tower gradually gets close to the flare tower base through chain blocks installed on the flare tower, and meanwhile, the flare tower is hoisted in place through constraint of guide plates installed on the flare tower base in advance, and finally, the flare tower is welded under the condition that the floating crane is kept in a hoisting state, after welding is finished, connection between the floating crane and the flare tower can be removed, and hoisting of the flare tower is finished. According to the method, the flare tower can be hoisted to the flare tower base through existing equipment, and welding of the flare tower and the flare tower base is completed.

The invention relates to a long-chain cationic gemini surfactant and a preparation method thereof. In the preparation of the existing gemini surfactant, when preparing the tertiary amine hydrochloride intermediate, hydrogen chloride gas is introduced into the tertiary amine, which causes equipment corrosion, and the existence of residual solvent will reduce the rheological properties of the gemini surfactant. The present invention uses epichlorohydrin and fatty amide ethyl / propylene / butyldimethylamine as raw materials, and prepares a series of saturated and unsaturated cations with 2-hydroxy-1, 3-propylene as a linking group Gemini surfactant, the molecular structure contains easily biodegradable amide bonds and easily hydrolyzed hydroxyl groups, and the hydrophobic chain is composed of saturated or unsaturated long-chain fatty acid alkyl chains. The preparation method of the present invention adopts epihalohydrin and a long-chain tertiary amine to obtain the final product through one-step reaction under the condition of solvent-free basic catalysis, which improves the reaction yield, simplifies the reaction process and shortens the reaction period. Industrial scale production.

The invention relates to a driving device for a pulse laser. The driving device comprises a drive and power supply module and a laser module; the drive and power supply module comprises a power supply source unit and a pulse generating unit; the power supply source unit is used for supply power to the laser module and the pulse generating unit; the pulse generating unit is used for generating electrical pulses according to a required pulse parameter; the laser module comprises a pulse level conversion unit, a pulse current switch and the pulse laser; the pulse level conversion unit is used for stepping up the electrical pulses generated by the pulse generating unit to a required electrical level so as to meet the driving requirements of the pulse current switch; the pulse current switch is used for driving the pulse laser; the power supply source unit is respectively connected with the pulse level conversion unit and the pulse laser through power supply leads; and the pulse generatingunit is connected with the pulse level conversion unit through a coaxial cable. According to the driving device for the pulse laser, the short driving distance of the pulse laser can be prolonged, and the driving quality can be improved.

The invention relates to a scrap steel preheating system for an electric arc furnace, which realizes the preheating for steelmaking raw materials for the electric arc furnace by fully utilizing the physical and chemical waste heat of high-temperature flue gas of the electric arc furnace and enables a dust removal system to filter and cool the high-temperature flue gas to achieve the purposes of energy saving, reduction of consumption, emission reduction and environment protection as well as improve the steelmaking production ratio of the electric arc furnace and to realize the investment and alteration of preheating scrap steel by high-temperature flue gas in a current old factory workshop. The scrap steel preheating system for an electric arc furnace comprises scrap steel preheating basket mechanisms and a basket rotation swing mechanism; the basket rotation swing mechanism is respectively connected with the scrap steel preheating basket mechanisms positioned at a scrap steel receiving position and a scrap steel preheating position through swing supporting frames; and a high-temperature flue gag water-cooling flue and a scrap steel preheating cap are arranged between the basket rotation swing mechanism and the upper end of the scrap steel preheating basket mechanism at the scrap steel preheating position.

The invention relates to a safe and efficient preparation method of an important raw material 9,9-dimethyl xanthene of an industrial catalyst Xantphos, and belongs to the technical field of fine chemical engineering. According to the preparation method, diphenyl ether, acetone and an acid catalyst serve as raw materials, a molar ratio of the raw materials is 1:1:(2-5), 9,9-dimethyl xanthene is prepared through a one-pot method, the yield can reach 70%-75%, and the content is 99% or above. According to the method, acid-catalyzed activated acetone and diphenyl ether are adopted for electrophilicsubstitution reaction to replace extremely dangerous trimethylaluminum and xanthone used in the traditional process for reaction, and the method has the characteristics of cheap and easily availableraw materials, safety in operation, high reaction speed, low requirements on production equipment and the like; and the production difficulty of the product is greatly reduced, and the yield of the 9,9-dimethyl xanthene can be rapidly increased.

A reciprocating lenticular lens screen assembly includes a lenticular lens screen and a driving assembly. The lenticular lens screen includes a substrate and an optical portion formed on a first major face of the substrate for viewing by a viewer at a viewer's position. The optical portion is configured for transmitting light rays representing images to the viewer's position at angles corresponding to a right eye viewing position of the viewer's position and at angles corresponding to a left eye viewing position of the viewer's position. A part of the driving assembly is connected to the substrate, and the driving assembly moves the lenticular lens screen back and forth at a predetermined frequency to show the images to the right eye viewing position and to the left eye viewing position alternately at the predetermined frequency. A stereoscopic display device incorporating the lenticular lens screen is also provided.

The invention discloses a parallel single-ground-wire ultrasoft wire which comprises a core unit, a core wire assembly and an external protection assembly; the core unit comprises two first core pairsand two filling ropes, the two first core pairs are arranged in parallel, the two first core pairs are arranged in the two sides of the two first core pairs respectively, and the two first core pairsand two filling ropes are enclosed into a circle; the core wire assembly comprises second core pairs, each second core pair is wound around the core unit, and the outer wall of each second core pairis tightly fit to the outer wall of the core unit; and the external protection assembly comprises a shielding tape and an external tape, the shielding tape horizontally wraps the core wire assembly, and the external tape is spirally wound around the shielding tape. Thus, the insert loss performance and reflection loss performance can be improved, the wire feels softer, and the structure is more compact and more stable.

The invention relates to the technical field of chemical raw material production, and particularly discloses a preparation method of L-homoarginine hydrochloride. The preparation method of L-homoarginine hydrochloride provided by the invention comprises the steps of: based on L-lysine as a starting raw material, firstly reacting L-lysine with copper chloride dihydrate to generate di-lysine copper complex to protect alpha-NH2, further carrying out carbamide treatment on omega-NH2 to obtain di-homoarginine copper complex, and then carrying out decopperization, impurity removal and acidification to obtain end product L-homoarginine hydrochloride. The preparation method of L-homoarginine hydrochloride provided by the invention is mild in reaction conditions, simple in operation, low in production cost and high in product purity, and is suitable for industrial production.

The invention relates to a metal component detection method and device based on a spectrum analysis technology. The metal component detection device comprises a sampling robot, blowing equipment, a pulse laser, spectrum detecting equipment, spectrum analysis equipment and control equipment, wherein the ultrashort pulse output end of the pulse laser is opposite to a sample chamber; the ultrashort pulse output end of the pulse laser is aligned with a spectrum collection lens group in the spectrum detecting equipment; the air outlet of the blowing equipment is aligned with the sample chamber; the sample chamber comprises a tray and a transparent outer cover above the tray; the sampling robot comprises a first mechanical arm and a second mechanical arm. Through the adoption of the method and device, non-contact metal component analysis is realized through laser, automation process is realized through the sampling robot, artificial participation is not required, ultrashort pulse laser is adopted, and the device has good spectral characteristic, and is simple in structure, convenient to apply and suitable for large-scale promotion and application.

The present invention relates to a kind of preparation of 1-(3-chloropyrazolo[1,5a]-4,5,6,7-tetrahydropyridine-2-yl)-5-methylamine pyrazole-4-carbonitrile Method, with 1-(3-chloropyrazolo[1,5a]-4,5,6,7-tetrahydropyridine-2-yl)-5-aminopyrazole-4-carbonitrile as starting material, After successively etherification reaction, purification, rearrangement reaction, deformylation reaction and filtration drying process. The preparation method of the present invention has high reaction efficiency, mild reaction conditions, improved production safety and equipment versatility, and the prepared finished product 1-(3-chloropyrazolo[1,5a]-4,5,6, 7-tetrahydropyridine-2-yl)-5-methylaminopyrazole-4-carbonitrile has the advantages of high yield, high purity and low production cost.

The invention discloses a preparation method for organically converting orchids into semi-cooked bacterial fertilizer. The method uses rapeseed cake and potassium sulfate as raw materials, and inoculates a variety of beneficial bacteria from the fallen leaves of chestnut trees in the orchid's native place into the raw materials, and then stacks them The raw materials are fermented, during which the fermentation process of the raw materials is controlled by adding water and turning the pile. After 15 to 20 days of stack fermentation, the organic semi-cooked bacterial fertilizer is prepared. The organic semi-cooked bacterial fertilizer prepared by this method is also raw fertilizer. It has the advantages of fully cooked fertilizer and is rich in bacteria and metabolites suitable for the growth of orchid root systems. It is especially suitable for the cultivation of terrestrial orchids. After two years of cultivation practice, good cultivation results have been achieved. The organic fertilizer has been transformed into semi-ripened bacteria. Fertilizer can be used as a fertilizer for orchids and as a strain for orchid planting materials.

The invention relates to an air conditioner control technology, discloses a bit flag programming control method for a single chip in an air conditioner, and solves the problem that the bit flag operation in the conventional technology cannot be finished in one instruction, so that a program is instable to execute and the situation that an indoor machine and an outdoor machine of the air conditioner cannot normally communicate with each other possibly occurs. According to the method, a bit flag is defined in a zero page address space of an RAM (Random Access Memory) and used as a bit flag variable, so that the problem that the bit flag cannot be reliably set to be 1 or 0 due to the bit flag operation in the non 0-0x0ff address range is solved, the caused random program fault is also removed, the program development speed is greatly accelerated, the debugging time of fault removal is shortened, the program code is shortened, the space of a read-only memory ROM is saved, the special requirements of single chip resources are lowered, the product development cost is reduced, the program execution reliability is improved, and the product quality is improved at the same time. Therefore, the method is especially suitable for the single chip of the air conditioner.

The invention relates to an air conditioner control technology, discloses a bit flag programming control method for a single chip in an air conditioner, and solves the problem that the bit flag operation in the conventional technology cannot be finished in one instruction, so that a program is instable to execute and the situation that an indoor machine and an outdoor machine of the air conditioner cannot normally communicate with each other possibly occurs. According to the method, a bit flag is defined in a zero page address space of an RAM (Random Access Memory) and used as a bit flag variable, so that the problem that the bit flag cannot be reliably set to be 1 or 0 due to the bit flag operation in the non 0-0x0ff address range is solved, the caused random program fault is also removed, the program development speed is greatly accelerated, the debugging time of fault removal is shortened, the program code is shortened, the space of a read-only memory ROM is saved, the special requirements of single chip resources are lowered, the product development cost is reduced, the program execution reliability is improved, and the product quality is improved at the same time. Therefore, the method is especially suitable for the single chip of the air conditioner.