168results about How to "Adjustment quantity" patented technology

The invention belongs to the technical field of high polymer material, relating to a method for preparing nanofiber containing a polymer pore structure, wherein the pore structure is formed on the fiber by a chemical reaction foaming method. The method comprises the following steps of: dispersing the inorganic salt, capable of discharging gas by reaction, in polymer solution, preparing super fine nanofiber by a high pressure static spinning method, immerging the obtained fiber in reaction solution, reacting the inorganic salt in the fiber, discharging the gas, and forming the pore structure on the fiber. The method has the advantages of obtaining the pore structure-containing nanofiber with controllable aperture number and uniform distribution, greatly increasing the specific surface area of the nanofiber and widening the application range of the nanofiber prepared by the electric spinning method. The prepared fiber has high application value in releasing medicine, carrier of catalyst, filtering absorbing material and the like. The method of the invention is wide in application range and can be directly applied to preparing the pore structure-containing nanofiber of a plurality of materials such as PS (polystyrene), PMMA (polymethyl methacrylate), PU (polyurethane), etc.

The invention provides a penetration coefficient determination apparatus for a permeable asphalt concrete track board test piece, and a test method thereof. The determination apparatus comprises a test device and a water supply device, and the test device comprises a workbench, an overflow water tank, an upper sleeve, a lower sleeve, two flanges, an electronic thermometer and a measuring cylinder; the outer sidewall of the upper sleeve is provided with water overflow ports connected with the inside of the upper sleeve, the two same flanges are provided with a ring of a slot, and the two flanges and the sleeve are cemented to form an integral body; the lower sleeve is connected through the overflow water tank, and the overflow water tank is provided with an overflow port and a water drainage port; the test piece is placed between the two flanges, a rubber sealing pad is arranged between each of the flanges and the test piece, the flanges are provided with screw holes, and the test piece is fixed through allowing long bolts to traverse through the screw holes and through using nuts; and the water supply device comprises a water storage barrel, a water pump and a power switch. The apparatus has the advantages of reasonable structure, simple operation, satisfactory solving of the seepage problem of the side wall, realization of flexible control of hydraulic gradient, and reasonable and reliable determination result.

The invention relates to a question recommendation method and a system. The method which is applied in an interactive QA system and is used to recommend questions to answering users comprises the following steps: ascertaining the degree of correlation between the questions to be answered and the question history of the answering users or the questions which have been answered a moment ago according to a plurality of questions to be answered put forward by questioning users and stored in the system; recommending and displaying the questions to be answered with the degree of correlation over a preset threshold to the answering users. The method provided by the invention not only can rapidly recommend the most correlated questions to be answered to the answering users for answering but also can keep equalization of the questions, thereby ensuring that the questions are not beyond the answering capability of the answering users, preventing the questions from missing the chance of being answered by other answering users due to accumulation in an answering user. Furthermore, with one answering user continuously answering questions, the ability value of the answering user is updated in different periods of time, thereby regulating the number of the acceptable recommended questions in next period of time.

The invention discloses a wear-resistant antifouling glazed brick glaze and a preparation method thereof. The wear-resistant antifouling glazed brick glaze comprises raw glaze powder, No.1 frit powderand No.2 frit powder, wherein the raw glaze powder comprises the following raw materials in percentage by weight: 8-12% of kaolin, 10-18% of calcined kaolin, 12-20% of quartz, 12-20% of dolomite, 8-15% of calcined talc, 1-5% of wollastonite, 8-15% of nepheline, 5-10% of zinc oxide, 0-5% of calcite and 6-12% of strontium carbonate, wherein the No.1 frit powder is prepared from kaolin, calcined talc and fluorite, and the No.2 frit powder is prepared from zinc oxide, strontium carbonate and borax. The wear-resistant antifouling glazed brick glaze contains a large number of cordierite microcrystals, and the cordierite microcrystals have the characteristics of transparency, high hardness and the like, so that the wear resistance and the antiskid effect of a glaze layer can be enhanced, and thecontradiction between the transparency and the wear resistance of the glaze layer can be solved.

The invention provides a multifunctional compound fertilizer special. The multifunctional compound fertilizer special for tobacco is characterized by comprising the following components in percentage on the basis of the total weight: 0.2-0.4 percent of compound sodium nitrophenolate, 3-5 percent of humic acid, 1.6-8 percent of inorganic mineral powder and the balance of special azophoska for tobacco. The azophoska in the multifunctional compound fertilizer special for tobacco preferably comprises 7-9 percent of N, 10-12 percent of P on the basis of P2O5 and 23-25 percent of K on the basis of K2O. The invention also provides a preparation method of the compound fertilizer. By adding a nutrient activating agent of the humic acid and a plant functional adjustor of the compound sodium nitrophenolate, the invention improves a tobacco-planting soil granular structure and the microbial environment, improves the absorption and the assimilation of the tobacco on nutrient elements, plays the interactive action among the nutrient elements and enhances the drought and disease resistance of the tobacco. The raw material used in the invention is easily obtained and the preparation method is simple and easy to operate.

The invention provides a biological feed for sheep. The feed comprises the following components by weight: 40-60 parts of bagasse, 10-15 parts of dry cassava dregs, 10-15 parts of sugar cane tail leaf, 1-2 parts of dicalcium phosphate, 4-6 parts of urea, 4-6 parts of molasses and 0.4-0.9 parts of a feed additive. The invention also provides a preparation method of the biological feed for sheep. The biological feed for sheep provided by the invention makes full use of raw materials including waste bagasse, sugarcane tail leaf and cassava dregs, which are not originally consumed by the sheep; through the fermentation of microorganism, the feed has enhanced palatability and is easy for sheep to eat; the feed improves the utilization rate of nutrient contents and improves digestion capability of the sheep; the fermented feed contains a large amount of beneficial microorganisms and nutrients for the growth of sheep; and sheep fed with the feed has enhanced disease resistance and improved lamb quality and taste.

The invention discloses a preparation method for polyaniline / ferroferric oxide compound with nucleus-shell structure, which comprises the steps as follows: a, 1.5-2.5 portions of polyethylene glycol and 1 portion of tetrahydrate ferrous chloride are respectively dissolved into water and mixed to obtain hydrosol; the pH value of the hydrosol is adjusted to 12.0-13.0, then 0.05 portion of hydrogen peroxide is added to stir and react for 4h under 55-65 DEG C to obtain water-based ferrofluid dispersed with polyaniline / ferroferric oxide grains; b, ammonium persulfate is added into the water-based ferrofluid to stir and stew for 8-32h so as to complete the absorption of a colloid shell on the ammonium persulfate; c, aniline monomer is added into the water-based ferrofluid after the step b and stewed for 5h under an ice-bath condition of 0-5 DEG C, washed and filtered to obtain a solid object; d, the solid object is dried under a temperature of 40-50 DEG C, thus obtaining the polyaniline / ferroferric oxide compound. The method is easy to control the components and micro morphology of the compound; moreover, the wave absorption substance content in the compound is high and the wave absorption performance is good.

A purifying system for multi-phase photocatalysis treatment of waste gases relates to a purifying system for titanium dioxide photocatalysis degradation treatment of the waste gases. The purifying system can be a filling type waste gas purifying system and a spraying type waste gas purifying system and mainly comprises a blower, a waste gas disperser, a reaction chamber, an ultraviolet light tube, a nano titanium dioxide suspension and the like. The purifying system provided by the invention has the advantages as follows: the structure is simple, the use is flexible and convenient, various organic waste gases or reducing waste gases can be treated, and suitability for treatment of various industrial waste gases is achieved; the waste gas treatment is complete, the purifying rate is high, the secondary pollution problem is avoided, and environmental protection is facilitated; and the applicability is high, and the popularization and the application are convenient. The purifying system provided by the invention can be extensively applied to treatment of various industrial waste gases in large, medium-size and small-sized factories and is an ideal purifying system for gas-liquid-solid multi-phase photocatalysis treatment of the waste gases.

The invention discloses an integrated hydrate down-hole in-situ separation parallel-connection device with the large treatment capacity. The problems that in the mining process of hydrates, sand production is serious, and existing separators are low in separation efficiency are mainly solved. The integrated hydrate down-hole in-situ separation parallel-connection device comprises a top short section, parallel-connection assemblies, a bottom assembly, a lower plug and an outer pipe which are connected in sequence, wherein the multiple parallel-connection assemblies can be mounted simultaneously, or no parallel-connection assembly is mounted, the parallel-connection assemblies each comprise a parallel-connection short section, a backfill pipe, a separator and an inner pipe which are connected in sequence, and the bottom assembly comprises a bottom short section, a backfill pipe, a separator and a bottom inner pipe which are connected in sequence. According to the integrated hydrate down-hole in-situ separation parallel-connection device, the multiple separators are connected into an integrated outer pipe string in parallel, and the large treatment capacity is achieved while the separation precision is ensured; and the multiple separators are connected in parallel in a hydrate mining pipe string, the working capacity of the separators is greatly improved, the problem of the largesand production amount of the mined hydrates is solved, sand backfilling is ensured, the situations that reservoir collapse occurs, the pipe conveying efficiency is lowered, and equipment abrasion iscaused are prevented, and the mining cost of the hydrates is lowered.

The invention discloses an information determination method and device, a server and a storage medium. The information determination method comprises the following steps: determining path informationcorresponding to vehicle use request information, wherein the path information comprises predicted time information and corresponding predicted website information; searching the predicted time information from a preset time table, and determining corresponding predicted time period information and predicted type value information, the predicted time period information comprising at least one piece of time period information; searching the predicted website information, the predicted time period information and the predicted type value information from a preset website vehicle statistical table, and determining corresponding charging parameters, the number of the charging parameters being determined by the number of time period information included in the predicted time period information;determining cost information corresponding to the path information according to the charging parameters; and sending the expense information and the path information to a user terminal correspondingto the vehicle use request information. By means of the information determination method, reasonable scheduling of the shared vehicles can be achieved.

The invention discloses an aggregate storage bin for a dry-mixed mortar. The aggregate storage bin comprises a separator (14) arranged between adjacent chambers of the aggregate storage bin, and a discharge gate (15) which is arranged on the separator (14). The aggregate storage bin provided by the invention realizes communication and isolation among chambers by selectively opening and closing the discharge gate (15) on the separator (14) between adjacent chambers so as to adjust the size and the number of relatively independent chambers of the aggregate storage bin. When working, the aggregate storage bin is always in a state of maximum usage to meet the requirement of processing different types of mortar products so as to improve the utilization of the aggregate storage bin and increase the universality of the aggregate storage bin. Furthermore, the aggregate storage bin is easy to operate, and can improve the production efficiency of the dry-mixed mortar.

The invention discloses a mechanical cutting machine for road construction. The mechanical cutting machine comprises two bases, two guide rails and a plurality of connecting shafts, wherein a limiting groove is formed in the center of the bottom of each base; one group of limiting bulges are arranged on the upper surface of each guide rail; each limiting groove is clamped onto the surface of the corresponding limiting bulge; a hollow shell body is fixed on the upper surface of each base; the inner part of each hollow shell body is of a hollow structure; one group of spiral springs are arranged in each hollow structure; one group of baffles are fixed at the tops of the spiral springs in each hollow structure. According to the mechanical cutting machine for the road construction, disclosed by the invention, a plurality of groups of cutting blades are arranged in the mechanical cutting machine; in one cutting process, a plurality of groups of groove structures can be cut, so that the working efficiency of workers is effectively improved, and the labor intensity of the workers is also alleviated; furthermore, the quantity of the cutting blades can be adjusted through the machine, so that the cutting efficiency is accelerated.

The invention relates to an elevator traction sheave. The elevator traction sheave comprises a circular ring shaped wheel rim and a wheel cylinder arranged at the center of the wheel rim and coaxial with the wheel rim, wherein the wheel rim is connected with the wheel cylinder through an annular connecting portion perpendicular to the axial direction. One end of the wheel rim is provided with an auxiliary wheel rim, and the periphery of an outer wall of the auxiliary wheel rim is provided with radial sunken rope grooves. The elevator traction sheave is characterized in that the auxiliary wheel rim and the wheel rim are split and connected through threads. The elevator traction sheave is provided with the auxiliary wheel rim and the wheel rim which are combined in a split mode, facilitates replacement the auxiliary wheel rim with the rope grooves or a damaged auxiliary wheel rim suitable for different conditions, and prolongs the overall service life of the traction sheave while ensuring the connecting stability of the wheel rim and the auxiliary wheel rim. The number of the rope grooves can be adjusted, and the auxiliary wheel rim can be set to be combined type, so that the flexible control of shapes of the rope grooves is facilitated, and the advantages of different rope grooves are complemented. Limiting protrusions are further arranged at the opening positions of the rope grooves, thereby facilitating the stability of traction ropes in the rope grooves.

The invention discloses a heat dissipation device. The heat dissipation device comprises a heat dissipation assembly and a circuit board which matches the heat dissipation assembly. The heat dissipation assembly comprises a heat conducting board and a number of first heat dissipation fins which are detachably connected with the heat conducting board. Adjacent first heat dissipation fins are arranged in parallel and are spaced apart from each other. The circuit board comprises a substrate, and a number of chip units arranged on the upper surface of the substrate. The lower bottom of the heat conducting board is close to the upper surface of a number of chips. According to the heat dissipation device in the structure, the first heat dissipation fins and the heat conducting board are in snapconnection; the number of the first heat dissipation fins can be flexibly adjusted according to the heat generation temperature of different chip units on the lower bottom of the heat conducting board; and the heat dissipation efficiency of the heat dissipation assembly can be effectively improved.

The invention relates to an LED (light-emitting diode ) lamp bar. The LED lamp bar comprises a substrate, a plurality of LED modules and a plurality of fixed blocks, wherein the LED modules are arranged on the substrate and are electrically connected to the substrate; each fixed block is arranged between two adjacent LED modules and is fixed on the substrate. Through a modular design of parts of the LED lamp bar, parameter such as interval and the number of LEDs and length of the lamp bar can be conveniently adjusted. The LED lamp bar is applicable to a variety of machine types; meanwhile, batch production of the LED lamp bars can be achieved; the production period of the lamp bars is shortened, and the production cost of the lamp bars is reduced.

The invention discloses a centrifugal clutch structure. The centrifugal clutch structure comprises a clutch housing, a rotating wheel, shoe blocks, friction pieces, guide cylinders and springs. The rotating wheel is arranged in the clutch housing. The rotating wheel and the clutch housing are arranged on the same axis. The rotating wheel is uniformly provided with the at least three guide cylinders. The number of the shoe blocks is equal to that of the guide cylinders. Guide holes are arranged in the shoe blocks. The guide holes and the guide cylinders are slidably matched. The springs are arranged in the guide cylinders. One end of each spring is connected with the rotating wheel and the other end of each spring is connected with one shoe block. The friction pieces are fixed on the outer circular surfaces of the shoe blocks. The outer diameters of the friction pieces are the same as the inner diameter of the clutch housing. An accommodating cavity is arranged in each shoe block and filled with water. The springs are arranged in the guide cylinders. Each shoe block corresponds to a spring so that multiple shoe blocks can be arranged on the rotating wheels. Therefore, the number of the shoe blocks can be adjusted according to friction force provided according to the need. The centrifugal clutch structure helps the temperature of the friction prices from rising too fast.

The invention provides an ecological planting device for kitchens. The ecological planting device comprises two supporting frames and a transverse frame, two ends of the transverse frame are fixedly mounted at top ends of the two supporting frames respectively, a plurality of moving frames are movably arranged on the two supporting frames, and planting frame components are movably mounted in mounting grooves in the moving frames. Each planting frame component comprises a mounting block and a planting frame, the planting frames at lower ends of planting boxes are provided with water pipes in a communicated manner respectively, and every two vertically adjacent planting frames are communicated through a water pipe. The whole planting device is supported by the supporting frame and the transverse frame, tightness of locking bolts is adjusted through rotation so as to make it convenient for vertical position adjustment of the moving frames, and positions and quantity of the moving frames can be adjusted according to layouts and areas of the kitchens; water is injected into the planting frames through the water pipes, and the water level can be adjusted according to habits of different plants; plants are planted in the planting boxes in a centralized manner, and the planting boxes are vertically adjustable in position to meet the habits of different plants.

The invention discloses a clutch device. The clutch device comprises a clutch shell, a rotating wheel, shoe blocks, friction pieces, guide cylinders, first magnets and second magnets. The rotating wheel is arranged in the clutch shell. The rotating wheel and the clutch shell are arranged on the same axis. At least three guide cylinders are uniformly arranged on the rotating wheel in a radial direction. The number of the shoe blocks in the same as that of the guide cylinders. Guide holes are arranged in the shoe blocks and match the guide cylinders in a sliding manner. The first magnets are arranged in the guide cylinders. The second magnets are arranged in the bottoms of the guide holes. The first magnets attract to the second magnets. The friction pieces are fixed on outer cylindrical surfaces of the shoe blocks. The outer diameters of the friction pieces are the same as the inner diameter of the clutch shell. Accommodating cavities are formed in the shoe blocks and filled with water. The clutch device is not only capable of separating the shoe blocks from the clutch shell more flexibly but also preventing the temperature of the friction pieces from rising too fast.

The invention discloses a feed for laying hens and a preparation method thereof. The feed for laying hens is composed of the following raw materials in parts by weight: 50-65 parts of corn, 15-20 parts of soybean meal, 3-5 parts of corn gluten meal, 4-6 parts of corn germ cakes, 2-5 parts of rice bran, 8-10 parts of stone powder, 1-2 parts of soybean oil, 0.1-0.3 part of compound trace element, 0.2-0.5 part of compound multi-vitamin, 0.6-0.9 part of sodium bicarbonate, 0.1-0.3 part of isomalto-oligosaccharide, 0.2-0.4 part of saccharomyces cerevisiae culture, 0.1-0.2 part of coated organic acid, and 0.05-0.1 part of lactobacillus lactis. Through reasonable feed nutrient regulation and compounding of functional additives, the feed can improve the health and disease resistance of laying hens, reduce the number of salmonella in the intestines of the laying hens, improve intestinal health and improve production performance.

The invention relates to an adjustably quantitative medicine-taking bottle which comprises an outer bottle, an inner bottle and a large bottle cap, wherein a medicine tanking tube is arranged in the middle of the outer bottle, the inner bottle is sleeved in the outer bottle, and the large bottle cap is sleeved at the upper end of the inner bottle. The adjustably quantitative medicine-taking bottle is adaptable to solid tablets, spherical or oblate pills, rod-like capsules and the like, is simple in design and high-efficiency, and has the advantages that medicine taking time is shortened, medicine taking process is facilitated and is completed within a short time on some special conditions, and harm to patients caused by sudden diseases can be reduced.

The invention relates to the technical field of digital simulation models, in particular to an FE-SEA hybrid model analysis precision correction method for a lower automobile body of an automobile, which comprises the following steps: S1, obtaining a modal, a transfer function and a sound pressure response through a test; s2, obtaining main excitation of the lower vehicle body through a test; s3, loading excitation to the FE-SEA lower vehicle body model for solving; s4, judging whether a sound pressure response analysis result of the test and simulation is greater than a preset threshold value or not, and adjusting a damping loss factor and a package coverage rate of the model; s5, judging whether the modal test and simulation of the lower vehicle body monomer have errors or not, and adjusting the mesh size of the cross beam finite element model; and S6, repeating the steps S4 to S5 until the error meets the preset requirement. The method has the advantages that the simulation precision is improved by correcting the FE-SEA parameters and the mesh size of the finite element model, so that the FE-SEA model can accurately predict the lower vehicle body in the middle and high frequency bands.

The invention discloses a garbage can capable of automatically recognizing garbage category. The garbage can comprises a garbage box body, an infrared sensing device and a scanning device, wherein thegarbage box body comprises a first box body for containing metal garbage, a second box body for containing plastic garbage, a third box body for containing paper waste and a fourth box body for containing garbage with an outer packing not provided with a QR code; a first opening cover is arranged on the first box body; a second opening cover is arranged on the second box body; a third opening cover is arranged on the third box body; a fourth opening cover and a button are arranged on the fourth box body; the fourth opening cover is controlled to be opened by pressing the button; when the infrared sensing device senses that a person reaches a sensing area, an induction signal is sent to the scanning device; and the scanning device is connected with the garbage box body and the infrared sensing device, and is started according to the induction signal, classification of garbage is judged by scanning the QR code of the outer packing of the garbage, and the opening cover is controlled to be opened according to the judgment result. According to the garbage can, the corresponding opening cover is controlled to be opened by scanning the QR code on the garbage, so that the purpose of accurate classification of the garbage is achieved.

The invention relates to a method for operating a resistance welding device (10). The polarity of the direct voltage (Up) and the number of drive pulses during a time period of the drive device (14) are varied, without changing the pulse width of the drive pulses from outside of the normal circuit tolerances. The method has contribute to reduce switching loss and install a transformer with smaller structure volume.

The invention discloses a moxibustion bed with a suspended moxibustion function, belongs to the technical field of medical health maintenance, and aims at solving the technical problem that existing moxibustion temperature does not meet the requirement. The moxibustion bed comprises a motor, a smoke exhausting box, a first smoke collection box, a piston cylinder, a second smoke collection box, a moxibustion head, a moxibustion box and a smoke inlet box, wherein the motor drives a piston rod to move, so that airflow in the moxibustion box enters the first smoke collection box, the effect is exerted on the back of the human body, then the airflow is exhausted out of the smoke exhausting box, and through the second smoke collection box and the moxibustion head, the effect is exerted on the front side of the human body. In the moxibustion bed with the suspended moxibustion function, by intensively combusting moxa-sticks in the moxibustion box, the moxa-sticks are conveniently inserted, and ashes are conveniently disposed; through an air cylinder, the airflow is pumped to the first smoke collection box, so that air becomes uniform, the quantity of the moxa-sticks is adjusted, and the temperature is adjustable.

The invention discloses a wall decoration plate assembly type structure, and relates to the technical field of indoor decoration. The wall decoration plate assembly type structure comprises decorationplate single bodies and mounting cavity channels formed in a wall, wherein mounting groove pipes are adhered to one surfaces of the decoration plate single bodies and connected with the mounting cavity channels in a clamped manner, and fastener frames are arranged in the mounting cavity channels and can adjust expansion degrees through fastening bolts. The mounting cavity channels are formed in the wall and matched with the mounting groove pipes on the surfaces of the decoration plate single bodies in a clamped manner, so that the decoration plate single bodies are more firmly connected withthe wall, the tightness of the fastener frames in the mounting groove pipes can be adjusted by the aid of the bolts, expansion degrees of fastener blocks can be manually adjusted, the fastener blockscan adapt to the mounting cavity channels with different sizes, the decoration plate single bodies can be disassembled and replaced at any time, clamping plates and fastening plates are adhered to theperipheral side surfaces of the decoration plate single bodies, the decoration plate single bodies are more firmly connected in a clamped connection manner, and the number of the decoration plate single bodies can be flexibly selected and adjusted according to specific decoration requirements.

A joint type clamping dental floss apparatus comprise a rod, a handle and a joint. The longitudinal section of the rod has a structure with I-shaped, L-shaped and arc-shaped types, two tail ends of the rod are respectively provided with a projecting part screw, the top of the screw is provided with at least one hole penetrating in different directions, and the screw is in threaded connection with a nut. The top of the handle is provided with a g projecting part groove, at least one cavity is arranged in the handle, the opening of the cavity is at the bottom of the handle, a cover is detachably connected with the opening of the cavity, the cover is provided with at least one hole penetrating up and down, the outside of the cover is movably connected with a small cover for covering the hole of the cover, and a dental floss cutting device is fixedly connected to the inside of the small cover. The joint is a regular octagonal column, eight side surfaces and two bottoms of the joint are respectively provided with a groove, a screw thread is arranged in the groove, and the screw is in threaded connection with the screw in the rod and the screw in the handle. Dental proximal different directions can be cleaned in a humanized flexible manner; the dental floss can be replaced in a circulating manner, and the position and the quantity of the clamping dental floss can be adjusted; and the combination form of members can be changed to reach suitable use.

The invention relates to a thermal shrinkage type coin sorting packer comprising a coin sorter and a thermal shrinkage packer. The thermal shrinkage packer comprises a packer support, a tube film support, a tube film inner plunger, a tube film lifting device, a sealing device, a coin push-off device and a thermal shrinkage device; the thermal shrinkage device comprises a driving device, a thermal shrinkage outer tube connecting with the driving device, a thermal shrinkage inner tube located in the center inside the thermal shrinkage outer tube, a vertical heating device located in the center of the thermal shrinkage inner tube and a heat conducting plate which is arranged on the two sides of the upper end of the heating device and is connected with the thermal shrinkage inner tube; and air holes are formed in a lower cover of the thermal shrinkage inner tube. The thermal shrinkage type coin sorting packer has the advantages that the continuous supply of a tube film is achieved, the coin amounts of single package are adjustable, and the effect of thermal shrinkage packing is good.