33results about How to "Moderate cost" patented technology

The present invention relates to a superweathering color aluminum alloy section material and its production method. The composition of its base material is AlMg Si0.5-F22 alloy, according to Mg/Si=1.73, in which Mg (0.50-0.75%), Si (0.35-0.50%), Fe (less than 0.3%), Cu(less than 0.1%), Mn (less than 0.1%), Cr (less than 0.1%), Zn (less than 0.1%) and Ti (less than 0.1%); said base material is covered with chromized film whose thickness is 300-1000 mg/sq.m, and the chromized film also is covered with polyester powder coating layer which has imitation woodgrain pattern and whose thickness is 40-120 microns. Its production method includes the following steps: preparing aluminum alloy section base material, making pretreatment and chromizing process, spray-coating super weathering antistatic powder and heat transfer printing imitation woodgrain pattern.

The invention relates to a method for processing a double face fabric with single-side moisture transferring and cooling functions, which is characterized in that the yarn for weaving the inner layer of the fabric is made of cool nylon fiber FLYCOOL, and the yarn for weaving the outer layer of the fabric is made of all common garment fiber. The method comprises the basic processing steps of gray fabric preparing, pretreating, dyeing or whitening, softening and thermosetting finishing. The fabric obtains the single-side moisture transfer property through thermosetting finishing. The fabric with single-side moisture transfer property has simple technological design, stability in production, easiness for operation, high working efficiency, large-scale production and an obvious single-side moisture transfer effect, the product has good performance uniformity, and the fabric shows a composite special effect function, i.e. the fabric shows a single-side moisture transfer and moisture absorption fast dry mechanism and a cooling function. The wearing comfortableness of sports wear is increased, and the sports wear is cool and comfortable to wear, has strong wearability and can especially meet the wearing requirement of people doing a large amount of exercises in summer.

The invention relates to online credit investment-financing method and system. The method includes: investment and financing members register for investment and financing membership through a member management system; a verification management system receives investment and financing member registration information from the member management system and verifies and certifies the members according to the investment and financing member registration information; the investment and financing members transact for digital certificates of investment and financing membership through a digital certificate management system; the financing members use a credit investment-financing transaction management system to generate item packets of rights and interests; the investment and financing members make investment and financing transactions for the item packets of rights and interests through a financial e-commerce platform; and the investment and financing members operate item operation monitoring for duration of the item packets of rights and interests and operate money collection through a credit investment-financing transaction management system. The method and system allow financiers with high financing demands to quickly and effectively finance at moderate cost through informal financial channels, and allow for safe and reliable investment protection and stable investment come for informal finance investors.

The invention discloses a probe and a kit for detecting pseudo-hypertrophic muscular dystrophy. The probe for detecting pseudo-hypertrophic muscular dystrophy comprises nucleic acid sequences shown by SEQ NO:1-SEQ ID NO:546, and the kit for detecting pseudo-hypertrophic muscular dystrophy comprises nucleic acid sequences shown by SEQ ID NO:1-SEQ ID NO:546. The probe and the kit for detecting pseudo-hypertrophic muscular dystrophy can be used for detecting complete mutation information of DMD genes, including exon deletion/repetition and point mutation, have the advantages of completeness, rapidness, accuracy and appropriate price, and can be used for solving the problems of DMD molecular diagnosis; the kit disclosed by the invention is suitable for detection of various tissue samples of muscle, blood, amniotic fluid and the like, can detect pathogenic mutation of exons and introns as well as known mutations and unreported pathogenic mutations, and is also used for detecting whether patient genotypes are corrected or not after stem cell therapy.

The invention discloses a preparation method of functionalized photocatalyst fibers. The preparation method comprises the following steps: (1) preparing functionalized nano TiO2 powder, namely, adding 5.0g of ferric trichloride and 3.0g of graphene oxide into 1000ml of nano TiO2 hydrosol, stirring at room temperature for 2 hours, cooling, filtering and baking to obtain the functionalized nano TiO2 powder; (2) preparing functionalized PET master batch, namely, uniformly mixing 15wt%-45wt% of functionalized nano TiO2 powder, 1.0wt%-2.0wt% of a polyethylene dispersant with relative molecular weight being 2000 and 53wt%-84wt% of PET sections in a high-speed mixer, performing melting extrusion at 180-240 DEG C, and performing water cooling, granulating and vacuum drying to obtain the functionalized PET master batch; and (3) spinning the functionalized photocatalyst fibers, namely, drying 20wt%-50wt% of master batch and 80wt%-50wt% of PET sections in vacuum for 1 hour, performing melt spinning on the dried product combined with skin cores at 280 DEG C, and stretching by 3-3.5 times, thereby obtaining the functionalized photocatalyst fibers.

The invention discloses a multifunctional environment-friendly waterproof paint. The invention is characterized in that the multifunctional environment-friendly waterproof paint is prepared from the following raw materials in parts by weight: 20-45 parts of organic silicon rubber emulsion, 3-8 parts of organosilicon waterproofing agent, 2-7 parts of graphene pre-dispersion, 0.1-0.6 part of emulsion-type defoaming agent, 0.1-0.6 part of sodium carboxymethyl cellulose, 4-6 parts of shell powder, 2-3 parts of potassium carbonate, 6-8 parts of acrylic emulsion, 6-9 parts of nano calcium carbonate, 2-3 parts of sodium pyrophosphate and 2-4 parts of molybdenum disulfide. The waterproof paint combines the functions of the elastic waterproof coating and permeable waterproof layer; the added graphene implements super-durable weather resistance and hydrophobicity, so that the waterproof paint has the advantages of excellent properties and moderate cost; and the waterproof paint is widely used for impervious and waterproof constructions of tunnels, bridges, subways, swimming pools, roof squares, toilets and the like.

The invention provides an intelligent lifter for an integrated cooker (which integrates a gas stove, a range hood and a disinfection cabinet and is called by a joint name). An operating system of a conventional intelligent lifter for the intelligent cooker adopts two modes, namely a touch switching mode and a remote control mode. The whole lifting system comprises a controller, a motor, a rotating shaft, a synchronous belt, a gear, a rack and a smoke barrier. The intelligent lifter is characterized in that a transmission system for lifting is arranged in the integrated cooker; the motor is linked to the synchronous belt and a rack plate and other synthetic transmissions are carried out to lift the smoke barrier. The lifting system can be adjusted according to the intention of an operator based on a cooking requirement of the operator, and the adjustment travel range can be up to 200mm; the lifting system can meet operation requirements of cookware, such as a cauldron and a food steamer, which has a certain height, and can also ensure that the complete lampblack absorption rate cannot be affected; furthermore, all the structures and the parts of the transmission system are arranged in the cooker, so that the appearance cannot be affected; moreover, due to adjustment of structural materials and the like, the intelligent lifter is easy to clean during use.

The invention relates to a high alloy tube piercing plug material which is characterized by comprising the following components in percentage by weight: 0.16 to 0.4 percent of C, 0.6 to 1.2 percent of Si, 0.4 to 1.2 percent of Mn, 0.5 to 2 percent of Cr, 2 to 5 percent of Ni, 0.6 to 1.6 percent of Mo, 0.5 to 2.5 percent of W, 0.8 to 1.2 percent of Co, 0.3 to 0.6 percent of Nb, 0.3 to 0.6 percent of V, less than or equal to 0.01 percent of S, less than or equal to 0.01 percent of P and the balance of iron and unavoidable trace impurities. A piercing plug made by utilizing the high alloy tube piercing plug material and a surface processing method thereof which are disclosed by the invention, has the characteristics of long service life, moderate cost and good piercing effect.

The invention relates to a device and a method for recovering a glass reinforced plastic by pyrolysis. The recycling device comprises a reaction kettle, a heating device, and an oil and gas separating device, wherein the outside of the reaction kettle is provided with an insulation layer; the reaction kettle is provided with a main body and a cover body; a closed packing chamber is formed on the inside after the main body and the cover body of the reaction kettle are closed; the main body is provided with a heat passing pipe from the bottom part in a penetrating mode; the heat passing pipe isconnected with the bottom part of the reaction kettle and heat passing holes on the side wall; the heat passing holes on the side wall are communicated with the heating device; and the packing chamber is communicated with the oil and gas separating device through a ventilating pipeline. The recovering method comprises the following steps: placing the glass reinforced plastic in the packing chamber, and heating the glass reinforced plastic to between 300 and 600 DEG C; generating an oil and gas mixture by the glass reinforced plastic under an anaerobic environment; and then separating the oil and gas mixture by the oil and gas separating device to obtain an oil layer and a residue in the packing chamber. The recovering device and the recovering method can effectively recover the glass reinforced plastic and solves the problem of difficult recovery of the glass reinforced plastic.

The invention relates to the technical field of urban underground pipe galleries, and discloses an urban underground pipe gallery hard rock mass rope saw cutting excavation method. The urban underground pipe gallery hard rock mass rope saw cutting excavation method comprises the following construction steps: 1) a working well is pre-excavated in a pipe gallery foundation; 2) the pipe gallery foundation is divided into a plurality of working sections, a longitudinal free-face area is arranged between every two adjacent working sections, the depths of the free-face areas are greater than the depth of the pipe gallery foundation; 3) in the working well, the two side surfaces and the bottom surface of one working section are cut by a rope saw according to a rope saw cutting technology, so that a hard rock mass in the working section is separated from a rock parent; and 4) the step 3) is repeated, and the hard rock masses in the multiple working sections are separated from the rock parents. With the adoption of the urban underground pipe gallery hard rock mass rope saw cutting excavation method, a construction process is rapid, the vibration is small, no peripheral buildings are affected, the method is safe and controllable, the cost is moderate, a good working face is provided for construction of the underground pipe galleries in the later stage, and the method has great practical value and popularization significances.

The invention discloses a pharmaceutical composition for treating psoriasis; the pharmaceutical composition comprises a combined drug for internal use and a combined drug for external use; the combined drug for internal use comprises frankincense, myrrh, curcuma aromatica, Chinese angelica, root of rehmannia, turmeric, bunge cherry seed, the root of red-rooted salvia, fructus cannabis, dandelion, peach kernel, honeysuckle, Chinese violet, patrinia, folium isatidis, radix sophorae flavescentis, fructus cnidii, fructus kochiae, golden cypress, periostracum cicada, carthamus tinctorius and liquorice; and the combined drug for external use comprises sulphur, realgar, borneol, minium, alumen, indigo naturalis, calomel, camphor and etroleum jelly for medical purposes. The pharmaceutical composition disclosed by the invention has the effects of clearing heat, detoxifying, promoting blood circulation to remove blood stasis, cooling blood and eliminating speckles if taken internally, and can take the effects of combating poison with poison, killing parasites to relieve itching, softening hard mass, removing stasis, removing slough and promoting growth of tissue regeneration if taken externally; for treating psoriasis and tinea corporis, the pharmaceutical composition disclosed by the invention has outstanding effect, can treat both symptoms and root causes, ensures low recurrence rate and is proper in cost, and thus, the pharmaceutical composition disclosed by the invention can be accepted by general patients.

The invention discloses a pharmaceutical antipsoriatic composition which is prepared from 23 kinds of Chinese medicinal herbs including chastetree fruit, schizonepeta spike, pangolin scales, snail, white alum, orpiment, black catechu, gypsum, dahurian angelica root and frank incense. The composition can be prepared into any one of the conventional clinically acceptable dosage forms by adding auxiliary materials.

The invention discloses an antibacterial anti-formaldehyde stain-resistant highly hard multifunctional water-based coating and a preparation method thereof. A chemical reaction of two-component functional groups is utilized, the crosslinking density and compactness of the coating are improved, the stain resistance, mildew resistance and hardness of the coating are significantly superior to those of emulsion paint, and a functional nanometer material is introduced and has the capacity of resisting bacteria, removing formaldehyde and purifying air at the indoor temperature; the coating does notcontain formaldehyde, is healthy, friendly to the environment, proper in cost and excellent in various physical properties. Stain-resistant coatings on the market are mostly prepared by adding a special organosilicone emulsion or hydrophobic assistants, are generally high in cost, not good in stain-resistant effect and poor in scrubbing-resistant and stain-resistant effects and do not have the functions of resisting bacteria and removing formaldehyde; the multifunctional water-based coating utilizes a photocatalyst for degrading VOC such as the formaldehyde into water and carbon dioxide, secondary discharge does not exist, and the hardness of the coating is high; after being scratched, the coating cannot crack, the coating powder falling phenomenon cannot occur, and the coating further hasgood capacity of resisting water and mould.

The invention discloses an anchor chain span wire trash holding row. The anchor chain span wire trash holding row aims to solve the problem that a wharf boat trash holding row, a steel wire rope trash holding row and a mooring rope trash holding row are too high in manufacturing cost or short in service life or low in safety. The anchor chain span wire trash holding row comprises an anchor chain as a main span wire, a plurality of floating boxes connected to the main span wire, a trash holding net hung on the lower portions of the floating boxes and plummets arranged on the lower portion of the trash holding net. Floating box lock rings are arranged on the floating boxes in a sleeved mode, and the floating box lock rings are connected to the anchor chain through U-shaped hanging rings. The anchor chain is arranged on the upstream side of the trash holding net. The anchor chain span wire trash holding row is good in trash holding effect, long in service life and high in safety performance.

The present invention discloses passive zero on/off automatic excitation cut-off device and method. Said invention utilize passive electric power electronic device assembling plurality of function group to form topology network connection, providing powerful absorbing harmonic overvoltage function, once receiving demagnetization instruction, double starting up function group action, switching-on function discharging channel, function group rapid discharging transferring magnetic field current, reverse charging establishing voltage to conduct demagnetization resistor to complete demagnetization. Said invention can greatly improve demagnetization performance and save cost by more than 50 per cent.

The invention discloses a high-strength wear-resistant anti-corrosion brick and a manufacturing method thereof, and belongs to the field of refractory materials. The high-strength wear-resistant anti-corrosion brick comprises the following raw materials in parts by weight: 50-100 parts of bauxite, 5-20 parts of chromium concentrate, 1-10 parts of metallic silicon submicron powder and 1-10 parts of kaolin. The high-strength wear-resistant anti-corrosion brick is prepared by successively performing burdening, mulling, molding, drying and sintering. The high-strength wear-resistant anti-corrosion brick provided by the invention not only is simple in production technology and moderate in cost, but also is good in usage performances, and the service life of the high-strength wear-resistant anti-corrosion brick in a high-temperature segment of a laterite-nickel ore rotary kiln employing a direct reduction technology is up to one year or more, so that the production cost of a nickel iron enterprise is substantially reduced, the comprehensive energy consumption is reduced, the user requirements are completely exceeded, and impressive economic benefit is obtained.

A head removable camera includes a signal input/output cable having a distal end, a housing including a rear end to which the signal input/output cable is connected and a front end formed with an opening, an image pickup device housed in the housing, a lens unit housed in the housing so as to be disposed in front of the image pickup device, a first cap attached to the opening of the housing front end and including a front glass fitted therein, and a second cap in which a predetermined conversion lens is fitted, the second cap being attached to the opening of the housing front end instead of the first cap.

Provided are a method of chondrogenic differentiation from mesenchymal stem cells and a composition comprising chondrogenic cells differentiated using the method to treat diseases caused by cartilage damage. In the method, a centrifugal force is applied to human mesenchymal stem cells to be differentiated into chondrogenic cells. The chondrogenic differentiation may be achieved at moderate cost without using expensive cytokines or growth factors by periodically applying only a centrifugal force. According to the method of chondrogenic differentiation from mesenchymal stem cells in the present embodiment, chondrogenic cells may be also differentiated from human mesenchymal stem cells.

The invention discloses compound dry powder and a preparation method thereof. The compound dry powder disclosed by the invention is composed of the following components in percentage by weight: 40-60% of usnea longissima, 20-40% of cladonia amaurocraea, 10-20% of litmus, and 2-10% of vermiculate thamnolia thallus. The preparation method of the compound dry powder disclosed by the invention comprises the following steps of: mixing and crushing usnea longissima, cladonia amaurocraea, litmus and vermiculate thamnolia thallus, and sieving through a 80mesh sieve so as to obtain the compound dry powder. The compound dry powder, containing lichen secondary metabolites including usnic acid, thamnolic acid and atranorine as effective components, is a medicine, which is definite in formula, proper in cost, safe, high-efficiency and convenient to use; saprolegniasis frequently occurring in aquaculture can be effectively prevented and controlled; the compound dry powder, containing the lichen secondary metabolites including usnic acid, thamnolic acid and atranorine as the effective components, accords with food and drug safety requirements and is a novel safe and high-efficiency medicine for preventing and controlling saprolegniasis; furthermore, the adopted lichens are easy to obtain; and the compound dry powder is safe and harmless to people, livestock and cultured aquatic organisms in a used dosage range.

The invention discloses a preparation method of a double-activated photocatalyst. The double-activated photocatalyst comprises 4.8-8.6% of doped nano titanium dioxide, 0.9-1.6% of rheological agent, 1.2-3.8% of nano silver ions, 1.6-1.9% of dispersing agent, 0.8-1.2% of defoaming agent, 22-34% of hydrosol, 1.2-1.8% of anti-fogging agent, 44-70% of purified water and 3.1-3.9% of calcium metasilicate. The product has the advantages of being small in particle size, high in oxidation capacity, uniform in film forming and good in adhesive force; inherent characteristics of a high-order product canbe well excited under the low-light condition, so that formaldehyde, benzene series, TVOC and other pollutants can be rapidly, efficiently and lastingly decomposed; meanwhile, the functions of long-acting bacteriostasis, disinfection and deodorization are achieved; besides, the double-activated photocatalyst has a good pollutant removal effect and is proper in cost and suitable for most families to use.

The invention belongs to the field of refractory matters and relates to a ramming material for an iron tap channel and a preparation method of the ramming material. The ramming material is particularly suitable for main iron tap channels, branched iron tap channels and slag channels in front of an iron-making blast furnace. The ramming material contains the following raw materials: high-quality bauxite, brown fused alumina, silicon carbide, spodumene powder, Guangxi mud, kyanite, alumina ultrafine powder, an antioxidant, a plasticizer, environment-friendly resin and a sintering agent. The ramming material and the preparation method are characterized in that iron can be directly tapped without being baked after the construction, so that the use efficiency of the iron tap channel of the blast furnace is improved, the stable and smooth production during the iron-making is guaranteed, and the labor intensity of workers is alleviated. According to the performance, the ramming material for the iron tap channel is good in bonding strength, strong in fusion oxidation resistance, slag resistance and washing resistance, meanwhile, the refractory consumption is reduced, and the service life of a channel liner is prolonged.

The invention discloses a network type multi-channel hearing detection and judgment system. The system comprises a portable host, a network exchanger and a multi-channel audio signal unit, wherein the portable host is connected with the network exchanger; and the network exchanger is connected with the multi-channel audio signal unit. Compared with the prior art, multiple sounds are synthesized and mixed through an FPGA unit and a DDS unit; support of an Ethernet interface is added; equipment and the network exchanger realize Ethernet communication, so that Ethernet-based data transmission and command control become reality; a low-noise power supply is configured for reducing a signal-noise ratio of a whole signal; by adding drivers of multiple outputs in hardware, signal conditioning and driving effectively solves the problem of simultaneous hearing detection of multiple persons, and automatic test, automatic judgment and test result quantitative printout functions are realized; personnel can be trained and assessed according to specific hearing requirements; and the system is moderate in overall manufacturing cost and low in maintenance cost, and is simple and convenient to use, and the personnel do not need to be professionally trained.

The invention discloses a high repetition frequency modulation cobalt-doped Q spinel crystal capable of being used for a 1.5 micron wave band, the cobalt-doped Q spinel crystal is prepared from the following components according to a chemical dosage ratio: Co2O3 x%: MgO (1-x%): 3Al2O3, the ratio of cobalt oxide to magnesium oxide to aluminum oxide is x%: 1-x%: 3, and x=0-0.5. The cobalt-doped Q spinel crystal has the following beneficial effects that when cobalt oxide, magnesium oxide and aluminum oxide are selected to prepare the cobalt-doped Q spinel single crystal, the conversion efficiency of the cobalt-doped Q spinel crystal in the 1.5-micron wave band is high, the cost is moderate, according to the cobalt-doped Q spinel crystal, cobalt-doped aluminum-rich spinel is prepared from the cobalt oxide, the magnesium oxide and the aluminum oxide, as a 1.5-micron waveband laser Q-switching basic material, the unique passive Q-switching crystal material is good in comprehensive performance, low in production cost, convenient to grow, high in Q-switching efficiency and capable of achieving 500 kHz high repetition frequency.

The invention relates to the field of fishing plummets, and discloses a lead-free fishing plummet. The lead-free fishing plummet is characterized in that the fishing plummet comprises a cast iron body (1) and a zinc layer (2) attached to the surface of the cast iron body, and the thickness of the zinc layer (2) is not smaller than 65 micrometers. The lead-free fishing plummet fully solves the problem of environmental pollution brought by using lead plummets, has the advantages of being excellent in anti-corrosion and rust-proof performance, moderate in cost and superior in appearance grade.

The invention discloses a method for manufacturing a filter element of an aldehyde-removing odor purifier. The filter element mainly comprises the following components: 5.5-6.5% of platinum-supportedtitanium dioxide, 20-21% of a chlorine dioxide precursor compound, 14-15% of a plant extract, 1.5-2% of a deodorizing agent, 28-31% of nano modified carbon, 9-11% of nano silica gel particles, 1.8-2.5% of nano silver, 2.2-2.5% of nano negative ion powder, 2.5-2.8% of titanium dioxide, 0.8-1% of amino acid, 1.7-2% of citric acid, 1.3-1.5% of citral, 1.5-1.8% of tea polyphenol, 1.5-1.8% of limonene,2.2-2.5% of zathanol, 0.5-0.6% of camphor and 0.5-0.6% of elk vanilla phenol. The filter element of the aldehyde-removing odor purifier is obtained by adopting a nanometer technology, when in use, the filter element draws energy and reacts with water in flowing air, releases gaseous purification factor, and takes the initiative to purify the air; and at the same time, when the air flows through the filter element, the filter element can also capture pollutants and decomposes and mineralized the pollutants into carbon dioxide and water internally, so that the filter element not only has a goodaldehyde removing effect, but also has an appropriate cost and is suitable for most families.

A method determining heat loss coefficient K of a premises, includes: in unoccupied premises, performing a campaign of measurements of at least one temperature inside the premises T_ik at closely-spaced time intervals over at least two successive time periods D_k corresponding to distinct heating powers P_totk of the premises; determining temperature of outside air T_ek at the same closely-spaced times; for each time period D_k, on the basis of evolution T_ik(t) of a quantity T_ik as a function of time, selecting a time interval Δt_k for which the evolution T_ik(t) is substantially linear, then determining the slope α_k of the tangent to the evolution T_ik(t) over this time interval Δt_k, and deducing the value of the heat loss coefficient K of the premises on the basis of the slopes α_k.

The manufacturing method of the CNC milling and processing support mold is characterized in that: a high-strength hard metal that can be rapidly formed at room temperature or at a medium temperature below 70°C, has a density of 0.15-0.45g/cm3, and a compressive strength of 2.3-3.5Mpa Use high-strength foam plastics as raw materials, add a certain proportion of quartz sand to the rigid foam plastics, the particle size of the quartz sand is not greater than 100 mesh, and the addition ratio is within 5-20%, mix high-strength rigid foam plastics and quartz sand, Bubble, and then cast in the processed recessed pit coated with lubricating oil or release agent as a release coating, and make it fill the pit, level it and use it as a clamping support surface for the other side of the next step of processing.

The invention discloses automobile electric horn contact steel discs and a processing method for same. Specifically, the two side surfaces of each contact steel disc are arc surfaces, and the arc surfaces are tangent to the two crossed surfaces. The contact steel discs are made of stainless steel whose hardness is HV370-540. The roughness of each arc surface is less than Ra3.2. The thickness of each contact steel disc is 0.4mm-0.7mm. The invention also discloses the processing method for the automobile electric horn contact steel discs. The method comprises following steps: A. cutting the stainless steel into long strips according to the width of the automobile electric horn contact steel discs; B. edging the two surfaces of each long strip steel disc to form the arc surfaces, wherein the arc surfaces are tangent to the crossed two surfaces; C. enabling the roughness of each arc surface to be less than Ra3.2 through processing; and D. punching the long strip stainless steel, enabling the long strip stainless steel to have shapes of the automobile electric horn contact steel discs, and not cutting the two side surfaces of the long strip stainless steel. The automobile electric horn contact steel discs are reasonable in structure, moderate in cost and long in service lifetime, and save materials.

Separation type keyboard includes following parts: through PS/2 or USB interface, main keyboard unit is connected to computer; remote control small keypad unit. The remote control small keypad unit integrates small keypad with remote controller. Through wireless transmission mode, the remote control small keypad unit sends code of key value of small keypad or code of key value of controller to the main keyboard unit. Moreover, the invention also discloses the receiving method and sending method of separation type keyboard. Through the remote control small keypad unit, the invention implements function of small keypad as well as function of remote controller.

The invention discloses a water purification medicament. The formula of the water purification medicament mainly comprises the components in the following percentage by weight: 11-15% of phosphonic carboxylate, 9-13% of phosphonate, 26-36% of polyether poly-amino phosphonate copolymer and 44-54% of sulfonate copolymer. The water purification medicament disclosed by the invention is economic, environment-friendly and strong in applicability.