31results about How to "Easy for large-scale industrial production" patented technology

The invention provides a lithium iron phosphate with high compact density and a preparation method thereof. The lithium iron phosphate positive electrode material comprise large particles of lithium iron phosphate and small particle of lithium iron phosphate, wherein that small particles of lithium iron phosphate are filled in the voids between the large particle of lithium iron phosphate, and theshape of the small particles of lithium iron phosphate comprises a spherical shape. A method for prepare that lithium iron phosphate precursor comprises sinter the lithium iron phosphate precursor ina protective gas atmosphere, wherein the sintering is three-stage sintering, the sintering temperature of the three-stage sintering is sequentially increased, and aft the three-stage sintering is finished, the lithium iron phosphate positive electrode material is obtained; Wherein the shape of the lithium iron phosphate precursor comprises a spherical shape. The compaction density of the lithiumiron phosphate with high compaction density provided by the invention can reach 2.7 g/cm3, the electrochemical performance is excellent, the first discharge specific capacity of 1C can reach 150 mAh/g, and the capacity retention rate of 50 cycles of 1C can reach 99.9%.

The invention relates to a one-step RT-PCR (Reverse Transcription Polymerase Chain Reaction) detection reagent kit for Cucumber green mottle mosaic virus and a detection method thereof. The reagent kit comprises the following various agents for a one-step RT-PRC reaction: an upstream primer of Cucumber green mottle mosaic virus, a downstream primer of Cucumber green mottle mosaic virus, a PCR Buffer, Mgc12, dNTPs, an RNA enzyme inhibitor, a reverse transcriptase, a DNA polymerase, positive control containing Cucumber green mottle mosaic virus and negative control containing no Cucumber green mottle mosaic virus and RNase-free ddH2O. The invention has the advantages of simple preparation method and convenient large-scale industrialized production, and the detection method has the advantages of simple and convenient operation, high sensitivity, strong specificity and good accuracy. The whole detection process is accomplished in a PCR tube and suitable for rapid detection of a batch of samples, thereby simplifying the operation procedure, reducing the detection time, avoiding the cross contamination, and improving the detection efficiency.

The invention belongs to the technical field of biology, in particular relates to the technical field of biomedicine and in particular relates to a cell culture method for enabling human somatic cells to perform reversion differentiation for producing human blood derived auto-retina stem cells as well as a kit and application. The preparation method comprises the following steps: taking somatic cells as raw cells, sequentially culturing the raw cells through a cell culture solution A1, a cell culture solution A2 and a cell culture solution A3, thereby obtaining the blood derived auto-retina stem cells. The human blood cells serve as the raw cells, and the raw cells are subjected to reversion differentiation so as to produce the human blood derived auto-retina stem cells. A cell culture solution formula composed of small molecular substances is used, and the human blood cells are rapidly subjected to reversion differentiation so as to produce the human blood derived auto-retina stem cells under the conditions that the human somatic chromosome DNA sequence is not changed and any foreign gene or DNA fragment is not inserted. The production speed, yield and purity in the invention are obviously superior to those in the prior art.

The invention provides a highly oriented cellulose aerogel and a preparation method thereof and relates to the field of high molecular functional materials. The preparation method of the highly oriented cellulose aerogel comprises the following steps: (a) adding a chemical crosslinking agent into a cellulose solution for chemical crosslinking to obtain a chemical crosslinked cellulose hydrogel; and (b) carrying out pre-traction and alcohol solution replacement on the chemical crosslinked cellulose hydrogel and drying the hydrogel to obtain the highly oriented cellulose aerogel. The highly oriented cellulose aerogel solves the technical problem that a transparent cellulose aerogel with a highly oriented nanofiber structure cannot be prepared by a conventional preparation method. The preparation method of the highly oriented cellulose aerogel adopts an alcohol coagulating bath to freeze and orientate and replace the hydrogel with an alcohol gel, so that the replacement time is shortenedgreatly and the alcohol usage is reduced greatly, and the preparation efficiency of the hydrogel is improved.

The invention provides an anti-rust and weather-resistant brush-coating macromolecular material as well as a preparation method and the application thereof, and relates to the technical field of an anti-rust macromolecular material. The anti-rust and weather-resistant brush-coating macromolecular material comprises the following raw materials in parts by mass: 70 to 130 parts of 107 silicon rubber, 10 to 30 parts of a nano-silicon powder, 0.5 to 2 parts of a first silane coupling agent, 0.3 to 1.5 parts of a second silane coupling agent, 1 to 5 parts of ethyl silicate and 0.2 to 1 part of organic tin. The technical problems that the traditional brush-coating material has a low fireproof property, a weather resistance and waterproof property, has probability of peeling off, cracking and falling off, has short service life and high cost, is toxic and not environmentally-friendly, and is complex in construction process and difficult in construction are solved. The anti-rust and weather-resistant brush-coating macromolecular material provided by the invention has a high anti-rust property, a fireproof property, weather resistance and a waterproof property, has low probability of peeling, cracking and falling off under various severe environments, is long in service life, non-toxic, environmentally-friendly, low in cost and simple in manufacturing method, can perform brush-coating with rust, is easy to construct and has a good future application prospect.

The invention provides a high-efficiency low-temperature honeycomb type SCR denitration catalyst and a preparation method thereof. The preparation method includes the steps that precursor materials of the catalyst are completely mixed to obtain mixed pug, the mixed pug is sequentially subjected to extrusion molding, drying and roasting, and the efficient low-temperature honeycomb type SCR denitration catalyst is prepared; according to the present invention, the process conditions are simple, the high NOx removal rate can be achieved in the sulfur-containing waste gas environment at the low temperature range of 180-280 DEG C, and the large-scale industrial production is easily achieved.

The present invention relates to a Cu-based catalyst, a preparation process thereof and its use as the dehydrogenation catalyst in producing a hydroxyketone compound such as acetoin. Said Cu-based catalyst contains copper, at least one auxiliary metal selected from metal of Group IIA, non-noble metal of Group VIII, metal of Group VIB, metal of Group VIIB, metal of Group IIB and lanthanide metal of periodic table of elements, and an alkali metal, and further contains at least one ketone additive selected from a ketone represented by formula (II) and a ketone represented by formula (II′). Said Cu-based catalyst shows a high the acetoin selectivity as the dehydrogenation catalyst for producing acetoin.

R1-C(═O)—CH(OH)—R2  (II)

R1-C(═O)—CH(═O)—R2  (II′)

In formulae (II) and (II′), each group is defined as in the description.