56results about How to "Strong material adaptability" patented technology

The invention relates to a wet-mixed mortar admixture as well as a preparation method and application thereof, and belongs to the technical field of building mortar. For solving technical problems, the invention provides the wet-mixed mortar admixture consisting of a material A and a material B, wherein the material A consists of the following components in percentage by weight: 0.8-2% of air entraining agent, 2-4% of retarder, 0.06-0.15% of anti-cracking agent, 0.6-1.2% of reinforcing agent, 0.3-0.7% of water retaining agent and the balance of water; the material B consists of the following components in percentage by weight: 3-12% of water reducing agent, 0.2-0.5% of shrinkage reducing agent and the balance of water. The wet-mixed mortar admixture disclosed by the invention is high in water reducing rate, environment-friendly, and can be used for improving the open time, workability and water retaining rate of mortar and improving the compressive strength and the bonding strength; by adopting a double-mixing manner of the materials A and B, the consumption of the material A or B can be effectively adjusted according to the performance of the mortar, and the performance of the mortar can be easily controlled.

The invention discloses an M-shaped packaging bag opening mechanism, which comprises a rotary master disc, wherein the front end of the rotary master disc is rotatably provided with two corresponding swing arm spindles; the upper ends of the swing arm spindles are respectively provided with a swing arm; the front ends of the swing arms are respectively provided with a sucking disc seat; the lower ends of the swing arms are respectively provided with a gear; a rack respectively meshed with the two gears is arranged between the gears; a guide hole is arranged in the front end of the gear; a spring is installed in the guide hole; a connecting plate is arranged between the gear and the sucking disc seat; one end of the connecting plate is rotatably installed on the outer edge of the gear; the other end of the connecting plate is rotatably installed on a fixed support plate on the sucking disc seat; an idler wheel is rotatably installed in the rear end of the rack; and the idler wheel is in rolling cooperation with a swinging cam behind the idler wheel. The M-shaped packaging bag opening mechanism disclosed by the invention has the advantages of reasonable layout, small part amount, reliability in acting, stability in operation, high bag opening efficiency, pure mechanical mechanism, small travel, high operation speed, small inertial impact, convenience in regulation, high interchangeability, good adaptation on the packaging bag material and long service life.

The invention discloses a multiplex amplification detection kit for detecting 60 loca of autosomes and Y-chromosomes simultaneously. The 60 loca are amplified in a multiplex manner through a polymerase chain reaction, and amplification products of the loca are detected by using a gene sequencer. The kit can be used for detecting the 60 loca of the autosomes and the Y-chromosomes simultaneously, which is a case that most STR loca can be detected by a primary reaction with a capillary electrophoresis method at present, and databases can be built for autosome STR and Y-chromosome STR simultaneously by the primary reaction. The kit has strong adaption to biomaterials, namely, one kit can be used for amplifying various biomaterial samples, wherein different biomaterial samples comprise a male genome DNA extracted by a Chelex100 method, a magnetic bead extracting method or an organic extracting method and male blood or oral cells of human, which is/are collected by any one carrier of filterpaper, an FTA card, a cotton bud, gauze and the like. The kit has higher amplification specificity and higher thermal tolerance.

The invention provides a superplasticizer for facilitating cement hydration. The superplasticizer is prepared by free radical copolymerization reaction of a monomer a, a monomer b, a monomer c and a modified monomer d, wherein the modified monomer d is prepared by a reaction of a monomer d and nanometer SiO2; the viscosity average molecular weight of the superplasticizer is controlled to be in a range from 30,000 to 80,000. The invention further provides a preparation method of the superplasticizer and application of the superplasticizer in promotion of the cement hydration. The preparation process of the superplasticizer is simple, the use is convenient, and the cost is low; the superplasticizer is prepared by importing superlong side chain polyester, zwitter ions and nanometer particles and can remarkably facilitate early-stage hydration of cement, so that the compressive strength of concrete is improved; furthermore, at room temperature or low temperature, the early-stage reinforcement effect is greatly remarkable, and the middle-stage and later-stage strength is stably improved; besides, the superplasticizer has stronger adaptability for materials, and is suitable for low-temperature large-mixing-amount mineral admixture concrete and prefabricated part concrete.

The invention relates to a composite amplification kit of 47 human autosome and Y chromosome loci and an application thereof. The invention provides a composite amplification system of the 47 human autosome and Y chromosome loci, which comprises specific primers for amplifying the 47 loci, wherein the 47 loci comprise 19 autosome STR loci, 27 Y chromosome STR loci and 1 sex recognition locus. The47 pairs of specific primers are subjected to grouping fluorescence labeling by utilizing a six-color fluorescence labeling technology, and the simultaneous high-efficiency, specific and sensitive amplification of the 47 human autosome and Y chromosome loci is achieved through the design and optimization of primer sequences and working concentrations. The detection result of the composite amplification system has high individual identification capability and good data compatibility, and can be used for paternity identification and individual identification in practice, so that the detection cost of human DNA typing is effectively reduced, and the detection working efficiency is improved.

The invention relates to a detergent for automobile windshields, in particular to a detergent for antifogging automobile windshields with the minimum using temperature of minus 40 DEG C; the detergent mainly consists of the raw materials with the weight (percent): water solution with 30 percent of coconut oil amide propyl betaine: 1 to 5, ethylene glycol monobutyl ether: 1 to 15, propanediol: 10 to 15, water solution with 50 percent of alkyl glucoside: 1 to 10, p-nitrobenzoic acid: 0.16 to 3, water solution with 30 percent of cocamidopropylamine oxide: 1 to 2, isopropanol: 30 to 50 and tributyl phosphate: less than or equal to 0.01; the preparation method is that firstly the raw materials are dissolved, and the dissolved raw materials are uniformly mixed and the rest water is added and the raw materials and the water are uniformly stirred to obtain the detergent. The product which is colorless transparent liquid can be used in winter in most areas and can clean common fouling on the automobile windshields; the product has certain antifogging effect and reduces the occurrence of traffic accidents; most of the raw materials adopted by the detergent are novel green environmental protective surfactants which can be well degraded and can effectively reduce pollution to the environment; the product is wide in application range and has wider market prospects.

The invention relates to a composite amplification kit for 44 human Y chromosome loci and application thereof. The invention provides a composite amplification system of the 44 human Y chromosome loci. The system includes specific primers for amplifying the 44 loci including 41 Y chromosome STR loci and 3 Y chromosome Indel loci. The 44 pairs of specific primers are subjected to group fluorescencelabeling by the six-color fluorescent labeling technology. Through design and optimization of the primer sequence and the working concentration, simultaneous efficient specific sensitive amplification of the 44 human Y chromosome loci is achieved. A detection result of the composite amplification system has high individual recognition capability and good data compatibility, and can be used in practice for paternity testing and individual recognition, thereby effectively reducing the detection cost of human DNA typing and improving the detection working efficiency.

The invention relates to a composite amplification kit for 25 human chromosome loci and application thereof. The invention provides a composite amplification system of the 25 human chromosome loci. The system includes specific primers for amplifying the 25 loci including 23 autosomal STR loci, 1 gender recognition locus and a Y chromosome Indel locus. The 25 pairs of specific primers are subjectedto group fluorescence labeling by the six-color fluorescent labeling technology. Through design and optimization of the primer sequence and the working primer concentration, simultaneous efficient specific sensitive amplification of the 25 human chromosome loci is achieved. A detection result of the composite amplification system has high individual recognition capability and good data compatibility, and can be used in practice for paternity testing and individual recognition, thereby effectively reducing the detection cost of human DNA typing and improving the detection working efficiency.

The invention discloses a fluorescent mark multi-amplification kit of 27 STR loci of a human Y-chromosome and an application of the kit. The 27 low-mutation-rate STR loci on the Y chromosome can be amplified for multiple times in a single reaction. According to the fluorescent mark multi-amplification kit of the 27 STR loci of the human Y-chromosome and the application of the kit, a unique locus distribution mode and a specific primer sequence are designed, the 27 loci are divided into four groups, and different fluorescent marks are marked for each group. The multi-amplification system is one of the Y-STR kits which can detect the maximum number of the loci on the market, and the contained loci are all low-mutation-rate Y-STR loci, so that the kit is more suitable for checking of a male family. The multi-amplification system is good in primer specificity, wide in temperature tolerance range and high in check-material adaptability.

The invention discloses a human Y chromosome 37 STR loci fluorescence labelled multiplex amplification kit and an application thereof. The kit comprises a specific primer for amplifying 37 Y-STR lociwhich comprise 30 low-mutation Y-STR loci and 7 rapid-mutation Y-STR loci. The kit comprises 30 low-mutation and 7 rapid-mutation rate high-polymorphism Y-STR loci, considers distinguishing of checking of a male family and different male individuals of a same male line, and is the Y-STR detection product with a maximum loci quantity on market. The primer in the kit has the advantages of strong specification, high sensitivity, and accurate parting result, and practical case examination, DNA database construction and paternity identification requirements can be completely satisfied. The kit hasstrong check-material adaptability.

The invention discloses a Y-STR compound amplification detection kit marked by a novel fluorescent labeling method and a use method thereof. The Y-STR compound amplification detection kit performs compound amplification of 27 Y-STR loca with a compound amplification primer by adopting a polymerase chain reaction; the amplification product is detected by means of a gene sequencing instrument of a single channel or multichannel capillary tube; 27 Y-STR loca comprise 20 conventional low mutation rate loca and 7 fast mutant loca. The novel fluorescent labeling method comprises the steps of: marking a first alkaline group at the 5' end of the primer by a conventional dye; and marking the sixth alkaline group with a short excitation wavelength fluorescent dye to realize fluorescent energy transfer. The signal strength generated by the method is 3-11 times higher than that of the conventional method, and an amplification result which is more stable and balanced and higher in sensitivity can be obtained.

The invention relates to a coal tar hydrogenation whole-fraction method, which is composed of a slurry bubble tower hydrogenation method and a fixed bed hydrogenation method. The coal tar hydrogenation whole-fraction method disclosed by the invention comprises the following steps that after being uniformly mixed with a catalyst, coal tar whole fraction is increased in temperature and pressure and then enters a slurry bubble tower reactor to carry out hydrogenation cracking reaction with high-pressure hydrogen; a material from the slurry bubble tower reactor enters a fixed bed reactor after passing through a thermal separator and a decompression separation tower; hydrogenation cracking reaction and hydrogenation refining reaction are further carried out under the action of a catalyst B; a material from the fixed bed reactor is separated into gas and liquid products through a cold separator; gas passes through a circulation hydrogen compressor and is mixed with supplied nitrogen to enter the slurry bubble tower reactor in a circulating manner; a liquid is separated into liquefied gas, naphtha and diesel oil through a fractionating tower; wax oil enters the fixed bed reactor in a circulating manner; and tail oil enters the slurry bubble tower reactor in a circulating manner. The coal tar hydrogenation whole-fraction method disclosed by the invention is scientific and reasonable in process, high in light oil yield, high in operation flexibility, steady to operate and easy to control, and is capable of increasing the utilization rate of coal tar to the most extent.

The present invention relates to the technical field of lubricating grease industry, especially to a vehicle central controlled lock lubricating grease and a preparation process thereof. The vehicle central controlled lock lubricating grease comprises, by weight, 55-70% of a base oil, 0.3-1% of calcium hydroxide, 5-15% of benzoic acid, 8-15% of high purified water, 0.5-2% of boric acid, 3-8% of a lithium hydroxide oil mixture, 0.5-6% of an anti-rust agent, 0.5-2% of an anti-oxidation and anti-corrosion agent, and 0.1-4% of an extreme pressure anti-wear agent. The preparation method comprises: carrying out stirring-heating on high purified water, benzoic acid, base oil, calcium hydroxide, boric acid, a lithium hydroxide oil mixture, an anti-rust agent, an anti-oxidation and anti-corrosion agent and an extreme pressure anti-wear agent, and finally carrying out homogenization degassing to obtain the finished product. Compared with the vehicle central controlled lock lubricating grease in the prior art, the vehicle central controlled lock lubricating grease of the present invention has advantages of excellent shear resistance, excellent water resistance, extreme low friction coefficient, effective noise reducing, good oxidation resistance, and good corrosion resistance.

The invention provides a multifunctional spray-head for a 3D printer. The multifunctional spray-head for the 3D printer comprises a bracket, a nozzle assembly arranged on the bracket, a heating assembly, a feeding assembly, a heat dissipating assembly and a detecting assembly, wherein the nozzle assembly comprises a nozzle and a throat pipe, and the heating assembly is arranged between the nozzle and the throat pipe and used for heating a nozzle melting chamber; the feeding assembly comprises a printing wire guide pipe, an extruder gear, a rotary wheel matched with the extrude gear and a driving motor used for driving the extruder gear; the axes of the printing wire guide pipe, the throat pipe and the nozzle are in the same line, the extruder gear and the rotary wheel are arranged between the printing wire guide pipe and the throat pipe, and are used for sending a printing wire to the throat pipe via the printing wire guide pipe; and the heat dissipating assembly is used for cooling the throat pipe, and the detecting assembly is used for detecting whether the printing wire penetrates through the printing wire guide pipe or not and whether the rotary wheel rotates or not. The spray-head gathers the functions of wire feeding, wire seizing/ breaking detection, automatic height finding and leveling, and has the advantages of small volume, light weight, big wire feeding strength, and high print material adaptability.

The invention relates to a composite amplification kit for 38 human Y chromosome loci and application thereof. The invention provides a composite amplification system of the 38 human Y chromosome loci. The system includes specific primers for amplifying the 38 loci including 35 STR loci and 3 Indel loci. The 38 pairs of specific primers are subjected to group fluorescence labeling by the six-colorfluorescent labeling technology. Through design and optimization of the primer sequence and the working concentration, simultaneous efficient specific sensitive amplification of the 38 human Y chromosome loci is achieved. A detection result of the composite amplification system has high individual recognition capability and good data compatibility, and can be used in practice for paternity testing and individual recognition, thereby effectively reducing the detection cost of human DNA typing and improving the detection working efficiency.

The invention discloses a solid anti-mud ultra-slow release polycarboxylate slump retention agent and a preparation method of the slump retention agent. The preparation method comprises the followingsteps of: (1) esterification: allowing methacrylic acid, saturated acid and 3-di(2-ethoxyl) amino-2-hydroxyl propanesulfonate to react to prepare an unsaturated esterification micromonomer by the action of a catalyst, (2) melt polymerization: adding unsaturated polyether and 4-hydroxybutyl vinyl polyoxyethylene ether into a reaction kettle for polymerization reaction in a molten state, and (3) solidification and slicing: after the reaction, performing vacuumizing through a mechanical pump to remove an organic solvent, and then performing slicing through a condensation slicer to form the whiteflaky solid polycarboxylate slump retention agent. The prepared slump retention agent has a good anti-mud effect and good slump retention ability for a long time.

The invention provides a broad-spectrum crop biomass pretreatment system which is simple, rapid, large in treatment capacity, high in material adaptability, low in energy consumption and homogeneous. The broad-spectrum crop biomass pretreatment system comprises a primary feeding device, a primary crusher, a secondary feeding device, a secondary grinder and a homogenizer, wherein the primary feeding device is used for performing sectional and blocky cutting on materials to be treated and discharging the obtained sectional and blocky material fabrics; the front end of the primary crusher is connected with an outlet of the primary feeding device, and the primary crusher is used for crushing the sectional and blocky material fabrics discharged out of the primary feeding device so as to obtain granular materials; the front end of the secondary feeding device is connected with an outlet of the primary crusher, and the secondary feeding device is used for performing arch breakage on the granular materials and discharging the obtained material fabrics; the front end of the secondary grinder is connected with an outlet of the secondary feeding device, and the secondary grinder is used for further grinding the materials discharged out of the secondary feeding device so as to meet the utilization requirement; the homogenizer is used for homogenizing and mixing the materials obtained through the secondary grinder.

The invention provides a preparing method for fatty-group-modified polycarboxylate water reducer, and relates to the technical field of building materials. The preparing method includes the followingsteps that (1) sodium sulfite, sodium pyrosulfite and liquid caustic soda are added into deionized water, and a solution A is prepared; (2) formaldehyde, acetone and cyclohexanone are stirred to be even, and a solution B is prepared; (3) the solution B is dropwise added into the solution A, and aldehyde-ketone condensation liquid is obtained; (4) the aldehyde-ketone condensation liquid, methyl allyl polyoxyethylene ether and hydrogen peroxide are added into the deionized water, and a solution C is prepared; (5) crylic acid is taken and added into the deionized water, the mixture is mixed, anda solution D is prepared; (6) initiating agent and chain transfer agent are taken and added into the deionized water, the mixture is mixed and stirred to be even, and a solution E is prepared; (7) under the normal temperature condition, the solution D is added into the solution C, and meanwhile the solution E is dropwise added into a base solution; (8) dropwise adding is completed, and heat preservation stirring is carried out for 50 min. The preparing method has the advantages of being high in water reduction, low in mixing amount, high in water-reducing rate and the like.

The invention discloses a composite amplification kit for simultaneously detecting autosomal and Y chromosome STR loci. The kit at least comprises specific amplification primer pairs of 40 loci, and the sequences of the primer pairs include SEQ ID NO.1 to SEQ ID NO.78. The kit can simultaneously detect 20 Y chromosome STR loci, 19 autosomal STR loci and Amelogenin locus, not only is accurate in typing, but also shortens the detection time, and improves the efficiency of removing and determining criminal suspects.