93results about How to "Reduce nudity" patented technology

The invention relates to a Pt-based octahedral nanocrystal cathode catalyst used for a vehicle-mounted fuel cell and a preparation method for the cathode catalyst. According to the process, a one-step organosol method is adopted; and by adding the proper structural control agent CTAB or benzoic acid and the like, the octahedral-shaped PtM / C nanocrystal catalyst (PtM / C NCs) is prepared. Compared with the prior art, the catalyst provided by the invention takes the PtM(111) crystal surface with relatively high activity as a granular surface; compared with a commercial Pt / C catalyst, the catalytic activity of the cathode catalyst provided by the invention on oxygen is highly improved, and the cathode catalyst has certain advantages on cost and actual applications; and meanwhile, the cathode catalyst has simple preparation method, uniform catalyst structure, relatively high dispersity, excellent electrochemical performance and the like.

A mechanized cultivation method with three-year rotation of crops for the northeast features that for the first year, the field is prepared in the later autum, the seeds are sowed in the spring and the crops are harvested in the autum, for the second year, the stubbles are broken and returned back to field in the later auttom, seeds are sowed in the spring and the crops are harvested in the autum, and for the third year, the stubbles are broken in the field and the seeds are sowed in the spring, and the crops are harvested in the autum. It can preserve the moisture in soil for high yield.

A denitrating catalyst for the reduction reaction of Nox / NH3 gas mixture to generate N2 and H2O is proportionally prepared from bentone, TiO2, Fe2O3, CuO and H2O. Its preparing process is also disclosed. It has high thermal stability and high resistance to steam.

The invention relates to a preparation method of an environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board and belongs to the technical field of ceramic fiber materials. Calcium silicate ceramic fibers are taken as base materials, an organic binding agent or an inorganic binding agent, a filler and an additive in appropriate proportion are added, and distributing, pulping, moulding, drying and follow-up machining are carried out, and thus the environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board is obtained. The environment-friendly and ageing-resistant calcium silicate ceramic fiber building insulation board is characterized by comprising the following components in parts by weight: 50-80 parts of calcium silicate ceramic fibers, 0-20 parts of rock wool leftover material, 0-20 parts of expanded perlite, 5-20 parts of sepiolite fiber velvet, 5-20 parts of clay, 2-8 parts of resin powder, 1-5 parts of moistureproof agent, 0.2-2 parts of organic silicon moisture repellent and 0.01-0.5 part of additive. With adoption of the preparation method provided by the invention, safety and environmental protection problems of inorganic fiber building insulation boards are solved; the whole ageing resistance of the ceramic fiber building insulation board is improved; and waterproof and moistureproof properties of the ceramic fiber building insulation board are effectively improved.

The invention discloses a preparation method of wool fiber core spun yarn. Filaments are mainly taken as core yarn, wool fiber coating is performed on the surface of the core yarn twice, the twisting direction of wool fibers during the first coating is opposite to the twisting direction of the wool fibers during the second coating, the content of filament core yarn in the wool fiber core spun yarn produced through the method is 20%-35%, and the content of wool fibers is 65%-80%. According to the preparation method of the wool fiber core spun yarn, the filament is coated by the wool fibers twice and twisting directions of coating are opposite, so that sliding of the wool fibers on the surface of the filament core yarn is reduced or avoided, exposed filament core yarn on the surface of fabric is reduced, and the coating effect is good.

The invention discloses a biological crust composition for greening and protecting a steep road side slope and application thereof. The biological crust composition for greening and protecting the steep road side slope, provided by the invention, comprises the following components in parts by weight: 200-500 parts of biological crust source, 500-1,000 parts of fine earth, 3-5 parts of nitrogen, 5-7 parts of phosphorous, 6-9 parts of potassium, 50-60 parts of water retention agent, 5-10 parts of adhesive and 50-70 parts of coarse fiber. The invention also provides a method for greening and protecting the steep road side slope by using the biological crust composition. A biological crust with a high degree of coverage can be formed in a short period of time by adopting an artificial inoculating and culturing method, so that the steep road side slope is covered, greened and effectively protected. The method has the advantages of low cost, easiness, convenience, quickness, extensive management and easiness in maintenance and popularization, and is an effective method for greening and protecting the steep road side slope.

The invention relates to an auxiliary device for monitoring and measuring convergence points in the tunnel construction by a cross diaphragm (CRD) method and a method for burying the auxiliary device. The auxiliary device comprises an embedded fixed rod, a nut washer, a fixing nut, a measuring point connecting rod and a measuring point hook, wherein an expansion bolt head is formed at one end of the embedded fixed rod and is provided with an expansion piece, and the nut washer and the fixing nut are arranged at the other end of the embedded fixed rod; and the measuring point hook is arranged at one end of the measuring point connecting rod and is used for connecting a steel ruler convergence meter for measurement, and a threaded caliper retaining groove is formed at the other end of the measuring point connecting rod. When buried, the embedded fixed rod can be fixed in a tunnel side wall by putting the expansion bolt head formed at one end of the embedded fixed rod into a drilled hole and knocking the other end of the embedded fixed rod to ensure that the expansion piece expands to extrude surrounding rock; and the embedded fixed rod can be closely connected with the threaded caliper retaining groove because a thread is formed at the other end of the embedded fixed rod, and the measuring point hook on the measuring point connecting rod is used for connecting a convergence hook on the steel ruler convergence meter during measurement. The invention has the advantages that: the cost of manufacturing materials is low, the arrangement method is simple, measuring points can be effectively prevented from being damaged and the like.

A method for cleaning air by adsorbing the toxic gas, dust and pathogenic bacteria includes choosing an air region to be treated, determining the tpe and quantity of toxic elements in the air region, and choosing and planting the correspondent flower and tree for purifying in the air region.

The invention discloses an inductive uterine slow release system. The incidence of uterine adhesion after an induced abortion operation is high, the re-adhesion is serious after a uterine adhesion operation, and no good solution is available at present. The system comprises a uterus-shaped elastic balloon stent, a slow release drug film, a catheter and a one-way inflation valve, wherein the uterus-shaped elastic balloon stent is a hollow isosceles triangle structural body; waists of the isosceles triangle are 3.5cm; the bottom edge of the isosceles triangle is 3cm; one end of the catheter is connected and communicated with the vertex angle end of the uterus-shaped elastic balloon stent; the other end of the catheter is connected with the one-way inflation valve; a plurality of annular scales are arranged on the outer side face of one end, close to the uterus-shaped elastic balloon stent, of the catheter; and the one-way inflation valve comprises an inflation valve and a pressure sensor. The uterus-shaped elastic balloon stent is coated with the slow release drug film, and the slow release drug film is made of fibrin glue and contains a slow release drug. The system is simple in structure and easy to operate, does not injure a uterine cavity easily, and can effectively avoid the uterine adhesion.

The invention discloses a hill collapsing and garden making water and soil conservation method. The method includes steps of firstly, constructing a collapsed slope formed after hill collapsing into horizontal steps by a soil shifter; secondly, constructing ridging slopes with gentle gradients on the outer sides of the steps and manually punning the ridging slopes; thirdly, constructing high ridges on the edges of the horizontal steps on the inner sides of the ridging slopes; and fourthly, planting economic plants in the horizontal steps and finishing a hill collapsing comprehensive treatment process. The method effectively eliminates and reduces hill collapse phenomena caused by gravitational erosion, overcomes the shortcoming that a traditional hill collapsing slope is exposed, is obvious in water and soil conservation effect and abundant in hill collapsing slope landscape ecology, promotes development of hill collapsing ecological economy, has the advantages of high practicality, simplicity and obvious environmental protection effect, and is particularly suitable to be popularized and used in hill collapsing comprehensive treatment processes of vast red earth hilly areas.

The invention discloses a method for producing covering yarn. The method mainly takes spandex filaments as core yarns, two times of blend fiber covering are carried out on the surfaces of the core yarns, and the twisting direction of the blend fibers of the first covering is opposite to the twisting direction of the blend fibers of the second covering. The method for producing the covering yarn utilizes the blend fibers to cover the spandex filaments for two times, and the twisting directions of the two times of covering are opposite to each other, so that the phenomenon that the blend fibers slide on the surfaces of the spandex filament core yarns is reduced or eliminated, the phenomenon that the spandex filaments are exposed on the surface of a textile is reduced, and a good covering effect is obtained.

The invention relates to the technical field of municipal road construction, in particular to a road paving device for municipal road construction. The device comprises L-shaped base plates laid on the two sides of a municipal road. A movable beam is mounted between the tops of the two L-shaped base plates in a sliding manner; positioning blocks are arranged on the left and right sides of the topof the movable beam; a case is fixed at the bottom of the movable beam; a rake plate is arranged at the bottom of the front end of the case; a rotating plate for preliminarily trowelling concrete is mounted in the middle of the bottom of the case; a supporting column is connected between the movable plate and the rotating plate; the outer wall of the supporting column is connected with a driving mechanism; the movable beam is pushed forwards through the connecting rod; rake teeth at the bottom of the rake plate firstly rake concrete flat so that excessive concrete moves forward and the pavement surface is level; a driven gear rotates to drive the supporting column to rotate, the rotating plate rotates on the concrete pavement, the pavement is leveled, gravel in the concrete is prevented from being exposed out of the pavement, and the concrete pavement is continuously leveled and flattened through movement of the movable beam and movement of the plastering piece from back to front, so that the effect of flattening the concrete pavement is good.

The invention relates to a tin plating electrolyte which contains a solvent and the materials with following concentration: 10-20g / L of tin methane sulfonate, 30-60g / L of methanesulfonic acid, 0.4-5g / L of compound additive, and a proper amount of PH regulator; and the compound additive is formed by thiourea, hydroquinone, 2-mercapto benzimidazole and propylene glycol block polyether. For the tin plating electrolyte, by reasonably selecting types and use amount of additives, the problems of instable plating solution and high cost in the methanesulfonic acid system are solved, and by using the tin plating electrolyte, a high-mass plating layer is acquired beneficially.

The invention discloses a permeable spur dike structure, and belongs to the field of river channel treatment. The permeable spur dike structure comprises a plurality of structure units connected sideby side; each structure unit comprises a concrete base and a plurality of concrete piles; the plurality of concrete piles are uniformly distributed on the same straight line on the concrete base at intervals; the sectional area of the concrete pile is gradually reduced from bottom to top; the bottom of the concrete pile is fixedly connected with the concrete base; the upstream face of the concretepile is an arc-shaped face; a plurality of water permeable holes are formed in the concrete pile; and the distribution density of the water permeable holes is gradually increased from bottom to top.According to the invention, river floaters are effectively prevented from adhering and accumulating on the pile body; the higher the elevation of the spur dike is, the higher the water permeability is, so that the spur dike can automatically adjust the water blocking and flood discharging capacities when the river flow changes; a slow flow area formed by the concrete piles and the concrete base can be used for water grass growth and can also be used for providing places needed for fish to inhabit, bait, breed and develop; and therefore the ecological environment of a river can be effectively improved through the ecological characteristics of the structure.

The invention relates to an expanded quartz sand water-permeable colored brick which solves the problems of poor wear resistance, poor compression resistance, low water permeability, high specific gravity and high cost of a clay kiln-fired brick and a machine-made brick for the pavement of urban sidewalks, public squares and residence communities as well as the exterior wall decoration of buildings. The brick is manufactured from expanded quartz sand disused in the production process in the firebrick production industry and is manufactured by the following steps: screening the expanded quartz sand, crushing, filtering impurities, carrying out fine grinding, mixing with cement, slag, thermal insulation beads, water, mortar hardener and pigments according to a composition ratio, uniformly blending in a blender, carrying out secondary extrusion forming in a machine-made brick forming machine, and carrying out aeration-drying to obtain final products. The invention has the advantages of scientific prescription, easy material selection, beautiful appearance of products, light weight, wear resistance, compression resistance, good water permeability and low manufacturing cost, thereby having wide market prospects.

The invention relates to the technical field of new energy vehicles, in particular to a battery pack assembly. The battery pack assembly comprises a battery pack assembly box body and a battery module, and the battery pack box body comprises a bottom plate and an upper cover. The battery pack assembly is characterized in that the upper cover is provided with a middle channel convex hull along theX direction, the left side and the right side of the middle channel convex hull are provided with a left front convex hull arranged to correspond to a main driver seat and a right front convex hull arranged to correspond to an auxiliary driver seat respectively, a rear convex hull corresponding to the rear row of seats is arranged behind the middle channel convex hull and along the Y direction, and the battery pack assembly box body is provided with two high-voltage output interfaces used for being connected with two external high-voltage distribution box assemblies.

The invention relates to an intelligent carpet based on a sensing technique. The intelligent carpet comprises a carpet body (1) and a pressure sensor (2) arranged in an interlayer of the carpet body (1). The intelligent carpet also comprises a control box (3) arranged outside the carpet body (1). The control box (3) is connected with a relay (4). The relay (4) is in parallel connection with a switch of corresponding electric equipment in a room. The intelligent carpet is arranged at an entrance of the room. Compared with the prior art, the intelligent carpet has the advantages that an original electrical control line in the room needs not to be changed, only the relay needs to be connected with the original switch in parallel, foot treading motions are sensed by the pressure sensor, the control box controls motions of the relay, the corresponding electric equipment in the room is turned on or turned off, and the cost is low; the control box is arranged outside the carpet body, and is convenient to maintain; and the carpet is arranged at the entrance of the room and can control the electric equipment when people enter the room, so illumination convenience is greatly improved.

The invention discloses a medical bandage discharging machine for hospital nursing. The machine comprises a cover box, a PLC is arranged at the outer side of the right side surface of the cover box, acover plate is hinged to the edge of the left side of an opening of the front side surface of the cover box, and a sterilizing lamp and a storage battery are arranged on the inner side surface of thecover box. The medical bandage discharging machine for hospital nursing is simple in structure, convenient to disassemble and beneficial to bandage installation and regular sterilization of the innerside of the cover box, a bandage is isolated and stored through the cover box, the sterilizing lamp is used for sterilization, cross infection of the bandage is prevented, and the machine is conveniently used anytime; the bandage is pulled by a pulling sleeve, the bandage winds a rotation shaft and rotates along with the rotation shaft, in cooperation with clamping and discharging of a drive wheel and a driven wheel, the stability is high, and discharging is conducted quickly; by pressing a sliding sheet, a cutter cuts off the bandage, the operation is simple, exposure of the end of the bandage is reduced at the same time of not discharging, the machine is convenient to use, and the efficiency of winding the bandage by medical workers is improved.

The invention relates to a switching power supply device and a variable propeller system control cabinet which are mainly applied to a variable propeller system for wind power generation. The switching power supply device comprises a housing, an AC input port, an emergency power supply input port, a low-voltage DC output port and a high-voltage DC output port, wherein the AC input port is connected with a first AC / DC rectifier in series and then connected with the low-voltage DC output port; the AC input port is also connected with the rectifier in series and then connected with the high-voltage DC output port; the emergency power supply input port is connected with a first DC / DC converter in series and then connected with the low-voltage DC output port; and the emergency power supply input port is also connected with a second DC / DC converter and a relay in series and then connected with the high-voltage DC output port. Only various ports of the switching power supply device need to be connected with corresponding devices when the switching power supply device is used, so that the problem of complicated installation and operation of components in a traditional conventional design cabinet is solved; meanwhile, exposed electric wires and components in the cabinet are reduced; and the potential safety hazard is reduced.

A block cutting type cut hole forced caving detonation method comprises the following steps that firstly, on a cut hole top plate, a plurality of parallel shot hole sets are formed in one plane parallel to the axial direction of cut holes in parallel, wherein each parallel shot hole set comprises at least one parallel shot hole, and the included angle a1 between each parallel shot hole and the surface of the top plate ranges from 70 degrees to 85 degrees and faces the work face advancing direction; and secondly, on the cut hole top plate, each of multiple planes perpendicular to the axial direction of the cut holes is internally provided with a vertical shot hole set, and each vertical shot hole set comprises at least one vertical shot hole, wherein the included angle a2 between each vertical shot hole and the surface of the top plate ranges from 35 degrees to 85 degrees and faces the work face advancing direction, and in the axial direction, each vertical shot hole set is arranged between every two corresponding adjacent parallel shot hole sets. According to the method, it can be ensured that the cut hole top plate is advanced along with a work face and is collapsed in time, the roof weighting step at the initial stage is reduced, large-area top plate exposure is reduced, and the danger of rock burst is avoided.

The invention discloses a corner door type home elevator. The corner door type home elevator comprises a hoistway, a traction machine, a counterweight frame, a counterweight transition wheel, a speed governor, a rope gripper, a car, a landing door, a limiting device, a tensioning device, a buffer, a car frame, traction steel wires, an arrester and a control cabinet. The landing door is arranged between two adjacent surfaces of the hoistway, and the car is movably connected on guide rails of the car; the counterweight frame and counterweight blocks are arranged on counterweight guide rails, and the speed governor and the rope gripper are installed on the top of the hoistway; the limiting device and the tensioning device are installed on the bottom part of the hoistway; the traction machine is arranged on a traction machine pedestal, traction wheels are arranged on the traction machine, the buffer and the arrester are installed on the bottom part of the hoistway, and a tower spring silence structure is arranged in the control cabinet. According to the corner door type home elevator, the structure is optimized, corner space of the car is utilized; the traction machine is installed on the bottom part of the hoistway and inversely assembled, so that the manufacturing cost is low, the installation process is simple, the application scope is wide, and the space utilization rate is improved.

The invention discloses a planting method for interplanting pea before sowing of sunflower. The planting method mainly includes: when fertilizing and mulching a land block where sunflower is prepared to be planted in early spring, planting pea on line space films reserved for sunflower at planting time about 20th March; watering the pea for the first time in early May, and combining watering with fertilizing; planting sunflower in reserved lines at the time from the end of May to the beginning of June; harvesting pea at the beginning of July, wherein yield of pea per mu is about 200kg generally, and yield of sunflower is not reduced basically and can reach about 250kg. High-efficiency three-dimensional planting technology is developed according to the circumstance that a Hetao irrigation area is sufficient for one crop and insufficient for two crops, and has the advantages that light, heat and soil resources are utilized fully, one-season two-harvest is realized, ground surface exposure is reduced, and sand storm is prevented. The planting method has double effects of increasing yield and income and protecting ecological environment of farmland and is high in practicability and wide in application prospect.

The invention discloses a denitration catalyst, which is composed of the following components: 30-70 parts by weight of bentonite, 5-20 parts by weight of TiO2, 5-10 parts by weight of Fe2O3, and 5-15 parts by weight of CuO , 3-6 parts by weight of water. The invention also discloses a preparation method of the above-mentioned denitration catalyst. The invention composes multiple oxides based on the nano-layer structure of natural bentonite, makes the catalyst porous and achieves low-cost large-scale industrial application. When the mixture of NOx / NH3 enters the well-developed pore structure on the surface of the catalyst and undergoes a reduction reaction with the catalyst to generate N2 and H2O, the product gas can escape easily, which is very beneficial to the denitrification reaction. The preparation process of the invention is simple and controllable, and the cost is very low. The invention not only improves the thermal stability and water vapor resistance performance of the denitrification catalyst, but also is environmentally friendly.

The invention discloses a manufacturing method of a fusing device. The manufacturing method comprises the following steps: providing a substrate, wherein the substrate is provided with a welding pad region and a fusing region, the welding pad region is provided with a welding pad, and the fusing region is provided with a fuse; making a passivation layer on the substrate; removing a part of the thickness of the passivation layer of the fusing region till a preset thickness is left for the passivation layer above the fuse; and selectively removing the passivation layer of the welding pad region to expose the welding pad. According to the manufacturing method of the fusing device, the welding pad is not in an exposed state in the step of selective removal of the passivation layer of the welding pad region, so that the exposure times of the welding pad are reduced, the corrosion times of the welding pad are reduced, surface defects of the welding pad are further reduced or eliminated, and the reliability of the device is enhanced.

The invention discloses a thick-layer base material soil dressing spray-seeding structure suitable for ecological restoration of a high and steep slope and a construction method thereof. The spray-seeding structure comprises a first layer of matrix soil, a plant fiber mat, a second layer of matrix soil, a vegetation layer and geotechnical cloth, wherein the first layer of matrix soil, the plant fiber mat, the second layer of matrix soil, the vegetation layer and the geotechnical cloth are laid on the surface of the slope in sequence, the vegetation layer comprises soil dressing matrixes and vegetation seeds, the soil dressing matrixes take bottom mud compost as raw materials, the plant fiber mat and the geotechnical cloth are prepared from biodegradable materials, and a reinforcing structure and a planting groove are arranged, so that the soil fixation stability of the side slope is increased. According to the thick-layer base material soil dressing spray-seeding structure, a composite structure is formed by adopting multiple layers of base materials and covers the side slope, so that the problems of the side slope stability of high and steep slope dressing soil and the new environment burden caused by the side slope stability are effectively solved.

The invention relates to a method for forming an adjuster brush frame, which comprises the following steps of blanking by utilizing a blanking mould pair to obtain a metallic adjuster brush-frame framework; placing the adjuster brush-frame framework into a punching mould for punching the adjuster brush-frame framework to form a hole at a required position; bending the punched adjuster brush-frame framework into a preset shape; carrying out preliminary injection molding on the adjuster brush-frame framework to form an inner injection-molding layer which is connected with the adjuster brush-frame framework; cutting off the preset positions of the adjuster brush-frame framework and the inner injection-molding layer; carrying out secondary injection molding on the cutoff adjuster brush-frame framework and the cutoff inner injection-molding layer to form an adjuster brush-frame body; and welding electrical elements, such as a lead, a thermal fuse, a conducting piece and the like on the adjuster brush-frame body to form the adjuster brush frame. According to the method for forming the adjuster brush frame, the secondary injection molding is then carried out after the adjuster brush-frame framework and the inner injection-molding layer are firstly cut off by a two-time injection-molding method, so that the occurrence of metal-exposing situations can be greatly reduced.

The invention discloses an intelligent glasses, which comprises a glasses frame and glasses legs, control assemblies in the glasses legs are electrically connected to a main control panel in the glasses frame through electric connecting pieces, the glasses legs are rotationally connected to the glasses frame through hinge assemblies, each hinge assembly comprises a hinge shell, and the two ends ofeach hinge shell are hinged to the glasses frame and the corresponding glasses leg correspondingly; and the electric connecting pieces penetrate through the interiors of the hinge shells from the glasses legs and then extend into the glasses frame. The electric connecting piece is arranged in the hinge shell, so that the exposure degree of the electric connecting piece can be reduced, the electric connecting piece is effectively protected, and the damage risk of the electric connecting piece is reduced.

The invention relates to a modifying agent for steel ladle slag and an application method thereof, and specifically relates to a modifying agent for calcium-series steel ladle slag and an application method thereof, belonging to the technical field of metallurgy. The modifying agent for calcium-series steel ladle slag comprises the following components: 60-80 parts by weight of CaC2, 15-35 parts by weight of Al2O3, 5-20 parts by weight of CaO, less than or equal to 0.1 part by weight of S, less than or equal to 0.1 part by weight of P and the balance of inevitable impurities. The invention provides the preparation method and application method for the modifying agent for steel ladle slag, for achieving the purposes of modifying the original steel ladle slag, improving the covering effect of the original steel ladle slag, reducing the oxidability of the steel ladle slag and quickly forming the slag.

The invention discloses a drainage and power distribution system for an archaeological site and an archaeological site simulation display facility. The drainage and power distribution system for the archaeological site comprises a site protection layer arranged above an archaeological site body, a simulation display device structure layer, and a site simulation surface layer arranged above the simulation display device structure layer, wherein a drainage device and a power distribution device are arranged in the simulation display device structure layer. Through the arrangement mode of the simulation display device structure layer, the site protection layer and the site simulation surface layer, the problem that the historical information transmission effect of a display building is poor due to the fact that a power distribution system and a drainage system of an archaeological site simulation display facility in the prior art need to be exposed in a display area and the display effect of the archaeological site simulation display facility is seriously affected can be effectively solved.

The invention discloses carbonless copy paper. The carbonless copy paper comprises base paper, a pre-coating formed on the surface of the base paper and a color development layer formed on the surface of the pre-coating, wherein the pre-coating contains filler and adhesive, or the pre-coating contains filler, adhesive and wax substance; and the pre-coating contains 50 to 60 mass percent of filler, 40 to 50 mass percent of adhesive, and 0 to 10 mass percent of wax substance. Because the pre-coating is coated on the surface of the base paper, exposure of fibers on the surface of the base paper can be reduced, holes in the surface of the paper are filled, problems about missing coating, shifting and the like in the subsequent process of coating the color development layer can be solved, the color development layer is coated uniformly, exposure points are reduced, and color development and printing of the color development layer are greatly improved. Moreover, the invention also provides a preparation method for the carbonless copy paper.