47 results about "International level" patented technology

The invention discloses a transmission method of time domain synchronous-orthogonal frequency division multiplexing (TDS-OFDM) based on a theory of compressive sensing and relates to the field of wireless communication. The method comprises the following steps: on the basis of self-correlation properties of a received training sequence and a local training sequence, obtaining parts of prior information of multi-path channels, and confirming a position of a non-interference area in the received training sequence according to the channel length of the multi-path channels included in parts of the prior information; according to parts of the prior information and on the basis of the theory of compressive sensing, calculating time delay of each path of the multi-path channels; and according to signals in the non-interference area and on the basis of a maximum likelihood algorithm, calculating coefficient of each path of the multi-path channels. According to the transmission method of the TDS-OFDM based on the theory of the compressive sensing, two technical problems that the TDS-OFDM is difficult to support high order modulation of 256 quadrature amplitude modulation (QAM) and the performance deterioration in dynamic channels is obvious are solved, and a strong theoretical and technical support is provided so that digital terrestrial multimedia broadcasting (DTMB) can catch up with and surpass the advanced international levels in key performance indicators of spectral efficiency, high-speed motion and receiving and the like.

The invention belongs to the field of a production method of a casing and particularly relates to a production process of a milky-white casing. The invention aims to provide the production process of the milky-white casing so as to enable the quality of casing products of China to be greatly improved and reach an international level and the economic value of exported casing products to be improved. In order to realize the technical scheme, the production process comprises the specific steps of: 1, washing a semi-finished product casing by clean water; 2, treating the semi-finished product casing at a room temperature by using an oxidization solution; 3, putting the casing subjected to oxidization treatment into a reducing solution and fishing out when the color of the casting is consistent; washing the casing to be neutral by using the clean water; and 4, putting the casing subjected to reduction treatment into the oxidization solution again to be treated and slightly agitating for 15min; and then taking out the casing and washing the casing to be neutral by using the water to obtain a finished product. The production process disclosed by the invention has the advantages that the casing produced by adopting the production method is milky white, pure in glossiness, glossy and transparent, smooth in hand feeling, fresh in smell, good in elasticity and great in tension; the utilization rate of raw materials is greatly improved; and the economic values are greatly improved on the aspect of export for earning foreign exchange.

A method for cultivating mulberry chromosome doubling, comprising the following steps: (1) instilling 0.4 to 0.1% colchicine with a concentration gradient from high to low to the shoot tip of the target parent's grafted seedlings for 5 consecutive days , wherein the height of grafted seedlings is 20-30cm; (2) use kraft paper bags or envelopes for moisturizing and shading during the treatment; (3) promptly clean up the root buds germinated below the treatment site after treatment; Carry out single-bud separation grafting. The invention has the characteristics of high polyploid induction rate. Experiments have proved that the induction rate of polyploidy obtained by grafting individuals by adopting the breeding method of mulberry chromosome doubling of the present invention can reach 32-56%, and the average reaches 47%, which is far higher than the level at home and abroad.

The invention relates to the field of washing machines of household appliances in the light industry. China has brought in an impeller type washing machine and a roller type washing machine from Japan and Germany since more than thirty years ago. But the impeller type washing machine and the roller type washing machine still have some defects and are far away from the target of ideal laundry of consumers. The creativity of a high control sleeve barrel serial washing rotating squirt rubbing imitation fireless hot wind double-drying washing machine is to try to make an ideal washing machine which is coveted and desirable for millions of households for a long time. Therefore, the inventor utilizes a unique design tip which is distinctive, advanced in consciousness, and free from impeller and roller factors. For instance, a switchboard is controlled in a high-post mode, boiling is imitated through fireless heating, space is used skillfully to achieve double baking, double drying is achieved though fireless hot wind, sterilization capacity is better than that of solar energy, an inner sleeve barrel and an outer sleeve barrel are utilized to achieve serial washing, a rotating squirt penetrates to wash a deep layer, a four-pronged approach is achieved, three-dimensional static and dynamic washing is carried out, and all-directions washing and rinsing are most clean and effort-saving. Through the eight laundry revolution unique skills, the cleaning rate can reach 100%, the wear rate (the clothes damage rate) can nearly reach zero, the vibration noise decibel reaches the lowest frequency, and water and electric energy can be efficiently saved by about 30%. Washing indicators are enabled to catch up with the international level through efforts. The machine is luxury and magnificent in appearance, and comprehensive and innovative in structure and function.

The invention discloses a milrinone compound and a pharmaceutical composition containing the milrinone compound. According to the invention, lactic acid is adopted for helping solubilization and regulating the pH value, so that hyperchloremia which is possibly caused by extremely high Cl- concentration brought by pH regulation by adopting hydrochloric acid is avoided. In addition, the milrinone compound and the pharmaceutical composition are reasonable in prescription, high in quality standard, low in impurity content and high in bioavailability, has unique advantages in safety, effectiveness and quality stability, and also has an international level and more outstanding advantages.

The invention belongs to the field of chemical engineering, and relates to a preparation method of an environmentally-friendly and durable totally-synthesized thermal conduction liquid. The method comprises a step of base oil synthesis and a step of base oil and assistant mixing, and the base oil is (3-alkyl-1-methyl-imidazolium)hexafluorophosphate. The thermal conduction liquid synthesized through the method has the characteristics of good thermal stability, good thermal conductivity, and realization of recycling. The quality of the above product is in a leading international level, and the product can provide a high-quality green and environmentally-friendly long-life thermal conduction liquid for production of domestic thermal conduction oil, and greatly promotes the thermal conduction industry to develop toward the environment compatibility and renewability.

The invention discloses a method for using a rubber accelerator M to synthesize an sulfonamide accelerator CBS by a solvent purification method. The method comprises the following steps of: by adopting the rubber accelerator M and cyclohexylamine as materials, adopting hydrogen peroxide and sodium hypochlorite as oxidants, adopting sulfuric acid as a catalyst, reacting to synthesize the accelerator CBS, wherein the optimum production process conditions include: (1) the molar ratio between all the materials and the oxidants is as follows: n(M):n(cyclohexylamine) is equal to 1:2.2; n(M):n(20% hydrogen peroxide):n(15% sodium hypochlorite) is equal to 1:0.6:0.65-0.75; (2) the reaction temperature is 35-40 DEG C; and (3) the reaction time is 2.0-2.5 hours. The method disclosed by the invention has the advantages that the technical problem in using the rubber accelerator M to synthesize the sulfonamide accelerator CBS by the solvent purification method is comprehensively solved, the product quality index is higher than international level, the consumption index reaches lower industrial level, and the problem of treatment of waste water, solid wastes and odor pollutants is solved.

The invention discloses a friction tester which comprises a sample bearing platform on which the sample can be arranged, a friction platform on which the friction medium can be arranged and a power device. The power device is used for driving the friction platform to do reciprocating motion relative to the sample bearing platform; the sample bearing platform comprises at least one group of clamping components and compressing components; the clamping components are used for fixing the sample; and the compressing components match with each group of clamping components and used for keeping the sample to contact the friction medium. With the structure, the friction tester has the advantages of simple structure, low noise, low pollution, low energy consumption, simple and smooth production process, high technology content and high productivity. All the quality indexes of the product reach the international level of the industry of decorative building materials.

The invention discloses an airport quick-response fire engine, wherein a highly compressed air cylinder is used as an injection source directly; water foam / dry powder and the like are matched respectively for injection with a jet flow of up to 10 Mpa; with 500-kw power and a 6*6 chassis, the unit power reaches an international level of up to 25 kw / T; a multiple launch rocket system piston retrothrust water cannon is adopted, which greatly reduces the recoil force, and improves the injection capability; the performance of the invention is superior to that of foreign products with the same kind; the invention is a product with Chinese independent intellectual property rights, is firstly witnessed domestically, and is completely manufactured in China.

The invention discloses a sliced natural circulation device for heavy liquid metal. A device body adopts the rectangular sliced structural design and mainly comprises a rectangular loop main body, a heat exchanger, a heating assembly, a flowmeter and an inserting thermocouple. At the international level, the research on a natural circulation experiment of the heavy liquid metal is mainly performed in an experiment platform formed by round tubes; the device disclosed by the invention adopts the rectangular sliced square box design and a reactor core body structure of a reactor is simplified, so that complex flow filed information which are more abundant than a round tube type natural circulation loop and similar to operating conditions of a real reactor is acquired while the development cost of an experimental verification platform is reduced; qualitative simulation and confirmatory research for a heavy liquid metal flow field inside the reactor can be realized; the device can be applied to the field of technology research and development and basic scientific research of the nuke industry as well as verification of analysis software and simulation software of a thermal hydraulic system, and has important research and engineering values.