37results about How to "Conducive to stable work" patented technology

The invention discloses a hydraulic lifting pipe conveyer for an oil drilling platform and belongs to a pipe conveyer. The hydraulic lifting pipe conveyer structurally comprises a bottom frame, supporting rods, an upper frame, an inclined platform surface, an inclined slideway auxiliary support and a telescopic platform surface; lifting oil cylinders are arranged between the bottom frame and the supporting rods; the inclined platform surface is arranged at the upper part of the upper frame and is hinged with one end of the upper frame; an inclined lifting oil cylinder and the inclined slideway auxiliary support are arranged between the inclined platform surface and the upper frame; the telescopic platform surface comprises a V-shaped platform surface and an upper frame telescopic pipe, wherein the V-shaped platform surface is arranged at the upper part of the upper frame telescopic pipe; telescopic oil cylinders are arranged between the inclined platform surface and the V-shaped platform surface; platform supporting legs are arranged on the periphery of the bottom frame; a hydraulic valve component is arranged on the bottom frame; and the lifting oil cylinders, the inclined lifting oil cylinder and the telescopic oil cylinders are respectively connected with a pump station and a control cabinet through the hydraulic valve component. The invention has the characteristics that the height, the inclined surface and the telescopic platform surface can be adjusted according to the production site, so that the hydraulic lifting pipe conveyer achieves the best working position, thereby the labor intensity is reduced, the production safety is greatly improved, the safe production environment of workers is ensured, and the like.

The invention relates to the technical field of wet dust removal of coal mines, in particular to a jet atomization type mining rotational-flow inertial dust remover and application process thereof. The jet atomization type mining rotational-flow inertial dust remover comprises a dusty gas conveying fan, an annular sleeve jet nozzle, a water storage tank, a rotational-flow dust remover, rotary impeller inertial dust removing devices, a gas-water separator and a concentrator. The jet atomization type mining rotational-flow inertial dust remover has the advantages that dust of various particle sizes can be removed by gradual dust removing and multiple dust removing, and the dust in the dusty gas can be moistened and wrapped by the annular sleeve jet nozzle; large dust and dust-water-mixed wrapped particles can be removed by the rotational-flow dust remover; one or more rotary impeller inertial dust removing devices are arranged in the central overflow channel of the rotational-flow dust remover and used for capturing and discharging fine dust; a front retaining plate and a rear retaining plate are arranged at the inlet of the gas-water separator to guarantee the complete removing of dust. The jet atomization type mining rotational-flow inertial dust remover which uses universal equipment of coal mine enterprises is high in dust removing efficiency, reliable and stable in effect and low in capital construction cost.

The invention relates to a fuel pump with a safety valve. The fuel pump comprises a fuel pump body (1), an upper cover (2) and a lower cover (3), wherein a negative pressure spring (10), a spring convex piece (9) and a negative pressure membrane (8) are sequentially arranged between the upper cover (2) and the fuel pump body (1); an oil outlet membrane (7) is arranged between the lower cover (3) and the fuel pump body (1); the fuel pump body (1) is internally provided with an oil inlet chamber (16), a negative pressure control chamber (17) and an oil outlet chamber (18); a one-way valve piece (6) and a limiting piece (5) are respectively installed at the outlet of the oil inlet chamber (16) and the inlet of the oil outlet chamber (18); the fuel pump body (1) is further provided with an oil inlet tube (13); and an oil inlet spring (11) and a ball valve (12) are arranged at the intersection of the oil inlet tube (13) and the fuel pump body (1). The fuel pump provided by the invention has the advantages of stable working, strong environmental adaptability and long service life.

The invention relates to a NKV6.0 (Neokylinlinux Trusted OS V6.0) system-based compatibility testing method for a trusted technology. The method comprises the steps of performing a trusted bootstrap test for measuring a kernel mirror image, an initrd and a startup configuration file of the NKV6.0 system by use of a TCM (Trusted Computing Group) chip in a grub stage; performing a trusted interfacetest for verifying an interface realization situation for providing an operation TCM trusted chip for the NKV6.0 system and an application program; performing a trusted operational control test for verifying situation of measurement of a CTMM (Cs2c Trusted Measure Module) for the kernel module and a system configuration file loaded in operation; and performing a trusted management center test forverifying graphical management in charge of measurement of a white list of the system. According to the NKV6.0 (Neokylinlinux Trusted OS V6.0) system-based compatibility testing method for the trustedtechnology, a trusted bootstrap module, a trusted chip interface execution module, a trusted operation control module and a trusted management center in the trusted technology can be guaranteed to work in the NKV6.0 system stably, and the safety quality of the trusted technology in the NKV6.0 system is guaranteed to a greater extent.

The invention discloses safety monitoring equipment for a road and a bridge. The safety monitoring equipment comprises a supporting cylinder, a connecting shell, a base, a fixing cone, an electric push rod, a placing plate, a camera, a reinforcing rod, a supporting column, a placing shell, an image sensor, a processor, a controller, a buzzer, a cooling fan, cooling holes, a water inlet pipe, a water storage shell, a water suction pump, a fixing plate, a water mist spraying head, a water drainage pipe and a water pumping pipe. The safety monitoring equipment for the road and the bridge is simple in structure and novel in design, and the base is stably fixed conveniently; meanwhile, the height of the camera on the bottom side of the placing plate is adjusted conveniently, vehicles on the bridge are shot conveniently, the operation and the use are facilitated, the heat dissipation effect in the placing shell is improved under the action of an arranged stable monitoring mechanism, and thestable work of electric elements in the placing shell is facilitated; and meanwhile, the passing vehicles are reminded conveniently, the situation of the too many bridge vehicles is avoided, the operation and the use are facilitated, the practical value is high, and the safety monitoring equipment is suitable for the application and the popularization.

The invention belongs to the technical field of catalysts, and relates to a catalyst and a preparation method thereof, and a process for producing hydrogen through electro-catalytic decomposition of water. A substrate of the catalyst is a copper material, the surface of the copper material is coated with metal nickel with a cubic phase structure, the surface of the metal nickel with the cubic phase structure is coated with metal nickel with a hexagonal phase structure, and nickel oxide or nickel hydroxide is arranged on the surface of the metal nickel with the hexagonal phase structure; the thickness of the metal nickel with the cubic phase structure is 10-200 nm, the thickness of the metal nickel with the hexagonal phase structure is 3-14 nm, and the thickness of the nickel oxide or nickel hydroxide is 1-5 nm; the catalyst provided by the invention has the characteristics of high efficiency, good stability, low cost and simple preparation method in the process of producing hydrogen byelectro-catalytic decomposition of water, and has huge potential application value.

The invention discloses a furrow opener with high stability for potato sowing. The furrow opener includes a strip-shaped plate, a sliding groove is formed in the upper surface of the strip-shaped plate, sliding blocks are slidingly connected in the sliding groove, a driving mechanism is arranged on the side faces of the sliding blocks, and a circular hole is formed in the side face of each slidingblock and movably clamped to a screw of the driving mechanism; an adjusting device is arranged on the upper surfaces of the sliding blocks, a furrow opener body is arranged on the lower surface of ascrew bolt of the adjusting device, first clamping pieces are symmetrically arranged on the side face of the furrow opener body, and first rotating shafts are inserted into the first clamping pieces.The furrow opener with high stability for potato sowing is convenient to install, multiple furrows can be opened at the same time, the spacing of the furrow opener body and the effective height of thefurrow opener body can be adjusted, the size and depth of opened furrows can be adjusted, more convenience is provided for opening the furrows in different terrains, the operation is simple, and moreconvenience is provided for use.

The invention provides a steering gear capable of reducing the motion space of a small vehicle body turning mechanism. The steering gear comprises a steering gear body and is characterized in that a cylindrical shell is arranged outside a shell at the output shaft end of the steering gear body, the inner portion of the cylindrical shell is connected with an output shaft through a splined hub in a sleeved mode, the other end of the splined hub is connected with an extension shaft in a sleeved mode, the extension shaft extends out of the cylindrical shell, and the extension shaft is provided with a deep groove ball bearing at the end opening portion of the cylindrical shell; the deep groove ball bearing is provided with a framework seal outwards, and an anti-dust oil seal is arranged on the end face of the cylindrical shell; the outer circle of the deep groove ball bearing is fixed to the interior of the cylindrical shell through a snap spring, and the inner circle of the deep groove ball bearing is fixed onto a shaft neck of the extension shaft through a steel cable baffle ring. Through schematic design and development of the extension structure, the problems that a steering gear is stuck and the gap of the steering gear is large due to the fact that an extension structure is additionally arranged are solved. The steering gear is simple in structure, saves space, facilitates finished automobile arrangement and conforms to the requirement for finished automobile development.

The invention discloses an internally cooled friction plate. A heat conductor is installed on the back of the existing clutch friction plate. There is a cooling liquid pipeline inside the heat conductor. On one side of the circle, the heat exchange is completed in this process, and then flows along the return pipe to the radiator. Before the coolant enters the radiator, a pump applies pressure, and the coolant enters the radiator under this pressure, and flows along the pipe to the heat conductor again after the radiator completes heat dissipation. The invention uses cooling liquid to perform heat exchange on the friction plates, which increases the heat dissipation efficiency of the friction plates and is beneficial to the stable operation of the clutch friction plates.

The invention discloses an anti-explosion robot not prone to toppling. The anti-explosion robot comprises a robot leg body, wherein the bottom of the robot leg body is open, a driving motor is fixedlyconnected to the inner wall of the top of the robot leg body, the output end of the bottom of the driving motor is fixedly connected with a threaded rod, the outer surface of the threaded rod is in threaded connection with a threaded block, limiting grooves are formed in the inner walls of the left side and the right side of the robot leg body. According to the anti-explosion robot, a force application block is arranged, the guide block and the traction ball play the role of stretching out and putting down the stable supporting structure when the movable structure is folded, then the anti-explosion robot can be folded when the anti-explosion robot stops, the anti-explosion robot can be put down to play a role in preventing the explosion-proof robot from toppling, the effect that the explosion-proof robot works stably can be achieved by preventing the explosion-proof robot from falling, and the effect of improving the working efficiency is achieved through stable work.

The invention provides an energy storage battery performance evaluation method of a photovoltaic power generation system. The energy storage battery performance evaluation method comprises the following steps that evaluation parameters of an energy storage battery of the photovoltaic power generation system are acquired; an evaluation model load state model of the energy storage battery of the photovoltaic power generation system and a cyclic time model of the energy storage battery are established, and performance indexes of the energy storage battery are evaluated according to the acquired evaluation parameters. By adopting the method, the performance state of the energy storage battery can be comprehensively evaluated under the situation of electronic converter influence of the photovoltaic power generation system, the accuracy of performance state evaluation of the energy storage battery is ensured, and accordingly stable work and grid-connecting stability of the photovoltaic power generation system are promoted.

The invention relates to the technical field of bus communication, and particularly discloses a bus terminal controller, a bus communication power supply system and a communication power supply method thereof. The bus terminal controller comprises a circuit board (100), and a second MCU module (200), a DC-DC circuit module (300), an open circuit and short circuit detection module (400), a second driving circuit module (500) and an RX-TX circuit module, which are arranged on the circuit board, wherein the second driving circuit module, the open circuit and short circuit detection module and the RXTX circuit module (1400) are all connected with the second MCU module, and the DC-DC circuit module is connected with the RX-TX circuit module; the DC-DC circuit module is connected with a bus power supply communication circuit module (600); the second driving circuit module comprises a code receiving module (501) and a code sending module (502) which are connected with each other; and the code sending module and the code receiving module are both connected with the second MCU module. The device has the advantages that the size is small, signals cannot be interfered, and the monitoring accuracy cannot be affected.

The invention relates to the technical field of power generation equipment, and particularly relates to a vehicle-mounted generator set. An engine, a generator, a radiator, a water adding tank, a muffler, a centrifugal suction fan and a torsional vibration damper are arranged in a box body, and the muffler and the radiator are arranged at the bottom of the box body; and a cooling and exhaust system structure is arranged at the bottom of the box body. The vehicle-mounted generator set has the advantages that the whole structure is simple, the volume of the generator set is reduced, the cost is saved, the structure has the performance of reducing the noise of the generator set, the whole cooling and air inlet design allows the generator set to work well and stably, and the box body has a high protection performance.

The invention discloses a workpiece vibrating screen based on magnetic rotation ultrasonic waves. The workpiece vibrating screen comprises a base and a screen body, a dust cover is arranged at the top of the screen body, a feeding hopper is fixedly installed on the top face of the dust cover and communicates with the dust cover, a fixed seat is fixedly installed on one side of the inner wall of the dust cover, a first motor is fixedly installed on one side of the fixed seat, a first lead screw is fixedly installed on an output shaft of the first motor, a sliding block is in threaded connection with the surface of the first lead screw, a sliding rod is hinged to the top face of the sliding block, a rotating plate is hinged to one end of the sliding rod, and one side of the rotating plate is hinged to one side of the inner wall of the dust cover. According to the workpiece vibrating screen based on magnetic rotation ultrasonic waves, by arranging the feeding hopper, the dust cover, the fixed seat, the first motor, the first lead screw, the sliding block, the sliding rod, the rotating plate, a weighing sensor, a baffle and a controller, accurate and quantitative weighing to materials is completed, subsequent screening work can be better carried out conveniently, and the practicability of the ultrasonic vibrating screen is enhanced.

The invention relates to a fuel pump with a safety valve. The fuel pump comprises a fuel pump body (1), an upper cover (2) and a lower cover (3), wherein a negative pressure spring (10), a spring convex piece (9) and a negative pressure membrane (8) are sequentially arranged between the upper cover (2) and the fuel pump body (1); an oil outlet membrane (7) is arranged between the lower cover (3) and the fuel pump body (1); the fuel pump body (1) is internally provided with an oil inlet chamber (16), a negative pressure control chamber (17) and an oil outlet chamber (18); a one-way valve piece (6) and a limiting piece (5) are respectively installed at the outlet of the oil inlet chamber (16) and the inlet of the oil outlet chamber (18); the fuel pump body (1) is further provided with an oil inlet tube (13); and an oil inlet spring (11) and a ball valve (12) are arranged at the intersection of the oil inlet tube (13) and the fuel pump body (1). The fuel pump provided by the invention has the advantages of stable working, strong environmental adaptability and long service life.

The invention provides a quantitative water outlet irrigator which comprises a bottle cleaning nozzle, a plastic hose, a fixing support column, a case, brake pads, rollers, a multifunctional observable filtering water tank structure, a water supply bag, a multifunctional clamping plate structure, a water pump, a shell, a water inlet connecting tube and an elastic rope, wherein the bottle cleaningnozzle is connected with the upper end of the plastic hose; the fixing support column is fixed at the upper end of the case through a bolt; the brake pads are mounted at the upper parts of the rollersthrough bolts; the multifunctional observable filtering water tank structure is mounted at the upper end of the interior of the multifunctional clamping plate structure; the multifunctional clampingplate structure is mounted at the front part of the interior of the case; and the rollers are mounted at four corners at the lower part of the case. Due to arrangement of middle and upper layer clamping plates, an inserting rod, a through hole, a fixing screw nut and a lower layer clamping plate, tools can be stored, and convenience can be brought to users to use the quantitative water outlet irrigator; and due to arrangement of a lifting handle, a water tank, a filtering net and a water amount observation window, weeds can be filtered, and the nozzle can be prevented from being blocked.

The invention discloses a hose grain suction machine capable of lengthening a hose. The hose grain suction machine comprises a grain suction machine body, wherein one side of the grain suction machinebody is fixedly provided with a motor through a bolt, fan blades are arranged inside the grain suction machine body, one end of the grain suction machine body is connected with a first hose, one endof the first hose is connected with a pipeline connecting pipe, one end of a second hose is provided with a hose fixing seat, one end of a first pipeline fastening plate is provided with a bolt, a hose placing plate is arranged on one side of the hose fixing seat, and a clamping plate is arranged, so that the problem that because the body of the grain suction machine needs to be installed, an auxiliary tool such as iron wires needs to be wound and tightened is solved, and the problem that a user is prone to being scratched is solved; and the pipeline connecting pipe is arranged, so that the hose of the grain suction machine needs to be replaced, the whole hose needs to be replaced, and the problem of time consumption and power consumption is solved; and the hose fixing seat is arranged, sothat the problem that because one end of unhulled rice of the grain suction machine is placed on the ground, the hose is affected by wind force and is prone to deviation is solved.

The invention relates to cleaning integrated equipment, in particular to western solar power generation and cleaning integrated equipment. The technical problem is how to provide the western solar power generation and cleaning integrated equipment which conveniently and quickly cleans a solar cell panel and can efficiently utilize water resources. The western solar power generation and cleaning integrated equipment comprises a base, a supporting block, the solar cell panel and the like, the top of the base is provided with a supporting block, and the top of the base is fixedly connected with the solar cell panel. According to the western solar power generation and cleaning integrated equipment, a sponge block is matched with a device on the sponge block, so that the solar cell panel can becleaned efficiently and quickly, the stable operation and the efficient power generation of the solar cell panel are guaranteed, the water resource can be recycled conveniently by recycling the usedwater, the equipment is particularly important in a western region where the water resource is insufficient, a glass cleaning agent and clear water can be fully mixed conveniently through a stirring plate, and the effect of ensuring the solar cell panel to be cleaned comprehensively is achieved.

The invention relates to a method for producing a buried tunnel junction (1) in a surface-emitting semiconductor laser and the laser of this type. The laser includes active area (5) containing pn junction enclosed by the first n doped semiconductor layer (6) and at least one p doped semiconductor layer (3, 4), and the tunnel junction (1) which is adjacent to the second n doped semiconductor on p side of the active area (5). To bury tunnel junction (1), the layer provided for the tunnel junction (1) is laterally stripped by material-selective in the first stage etching to the desired diameter of the tunnel junction. In the second stage, it is heated in a suitable atmosphere. This continues until the etched area (1a) is sealed by mass transfer from at least one semiconductor layer (2, 3) bordering on the tunnel junction (1). It makes it possible to produce a surface-emitting laser diode with simple technique in large yields, and enables steady work of cross single mode and high performance of the latter.

The invention discloses color paste dispersing equipment and a color paste dispersing method. The equipment comprises a supporting mechanism, a dispersing mechanism and a clamping mechanism, wherein the dispersing mechanism and the clamping mechanism are mounted on the supporting mechanism, wherein a movable material barrel is arranged on one side of the supporting mechanism; the supporting mechanism comprises a supporting frame, wherein the top of the supporting frame is connected with a top plate through a supporting rod, lifting guiding pieces for driving the dispersing mechanism and the clamping mechanism to work are installed at the bottom of the top plate, and the bottoms of the lifting guiding pieces are connected with a bottom plate; the clamping mechanism comprises a moving plate connected with the guide part, cross rods are connected to the two ends of the side, away from the supporting frame, of the moving plate, a base plate is connected to the side, away from the supporting frame, of the bottom plate, and fixing parts used for clamping and fixing the material barrel are connected between the cross rods and the base plate. According to the present invention, the design is performed according to the existing requirements, the material barrel is convenient to move, and during the material dispersion operation, the lifting guide member drives the dispersion mechanism to descend while driving the clamping mechanism to fixedly clamp the material barrel, such that the material barrel can be stably placed during the subsequent dispersion operation.

The invention discloses a grouting equipment for the production of daily-use ceramics, specifically relates to the field of ceramic production equipment, comprising a support seat assembly, the top of the support seat assembly is arranged on a cylinder assembly, and the top of the cylinder assembly is provided with a mud processing assembly The support seat assembly includes an O-shaped base, the top of the O-shaped base is welded with a support column, the top of the support column is welded with a support bucket, and the bottom of the support bucket is provided with a slurry guide tube, and the slurry guide A grouting head is threaded on the pipe, an electric valve is fixedly installed on the grout guiding pipe, and a first limit rod is welded on the inner wall of the top of the supporting bucket. The invention can quickly convert the mud material into high-quality mud, and complete the grouting, with high working efficiency, the cylinder body and the supporting bucket can be separated, and the mud processing assembly can also be removed from the cylinder body, which facilitates the maintenance of various components. Cleaning avoids the residual mud solidification and affects the stable work of the equipment in the later stage, and also facilitates the maintenance and replacement of various components.

The invention provides a connecting device and method for a pile leg and a pile shoe. The connecting device comprises the pile leg and the pile shoe. The pile leg is inserted into a pile shoe connector hole and positioned by a positioning pin. A pile shoe connector is provided with a connector groove which is provided with a locking ring. A cover plate is connected with the locking ring in an abutting mode and is fixed to the locking ring through a bolt. The pile shoe comprises a pervious pipe. The lower end of the pervious pipe is provided with a conical hole which is provided with an outer conical bowl. The outer conical bowl is movably connected with a pervious cover plate in the pervious pipe in the mode that a pin shaft penetrates through a lower lining plate, and is fixed by a nut. An annular rib plate is arranged at the bottom of the pile shoe by using the center of the bottom as the axis. The pile leg and pile shoe connecting stability is improved, the pile shoe supporting stability is improved, pile pulling force is reduced, and the workbench stability is improved.

The invention relates to a trusted technology compatibility testing method based on NKV6.0 system, comprising: trusted boot test: used to measure NKV6.0 system kernel image, initrd and startup configuration files by using TCM chip in the grub stage; trusted Interface test: used to verify the implementation of the interface for operating TCM trusted chips for NKV6.0 systems and applications; trusted operation control test: used to verify the integrity of CTMM’s kernel modules and system configuration files loaded during operation Metrics; Trusted Management Center Test: Used to verify the graphical management of the responsible system metrics whitelist. The invention can ensure that the trusted guidance module, the trusted chip interface execution module, the trusted operation control module and the trusted management center in the trusted technology can work perfectly and stably in the NKV6.0 system, ensuring its NKV6. 0 security quality of trusted technology in the system.

The invention discloses a pre-processing device before making wet wipes, which includes a storage platform, the lower surface of the storage platform is provided with outriggers, the left side of the storage platform is provided with a first conveyor belt conveyor, and the first conveyor belt The lower surface of the conveyor is provided with a first pillar, the rear side of the storage platform is provided with a second conveyor belt conveyor, the lower surface of the second conveyor belt conveyor is provided with a second pillar, and the upper surface of the storage platform is provided with a storage tank. The inner lower end of the storage tank is provided with evenly distributed feed holes, the interior of the storage table is hollow, and the inner surface of the storage table is provided with a negative pressure pump, and the front surface of the storage table is provided with a switch group. The pre-processing device before making wet wipes can transport and fix the display box, at the same time, it can cut the non-woven fabric inside the display box, and can collect the broken threads generated during the cutting process, which is convenient for wet wipes. Towel processing, thereby improving the quality of wet wipes, simple operation, easy to use.

The invention provides a directional guide mechanism, a device, a method and a medium. The directional guide mechanism comprises a swing ring structure, a displacement structure and a substrate (1), the swing ring structure is arranged on the displacement structure; the displacement structure is arranged on the substrate (1); the displacement structure is arranged at one end of the substrate (1) in the thickness direction, or displacement structures are arranged at the two ends of the substrate (1) in the thickness direction. The swing ring structure is provided with a rotation stopping mechanism, and the rotation stopping mechanism can lock or unlock movement of the corresponding swing ring structures. And / or the displacement structure is provided with a locking mechanism, and the lockingmechanism can lock or unlock the movement of the corresponding displacement structure. The directional guide mechanism, the device, the method and the medium can achieve the pointing of any point ofthe shaft structure in a specific spatial range, are suitable for various devices in the fields of orientation, positioning processing and spatial positioning pointing, and are wide in application range and high in operation precision.

The invention relates to a network type car anti-theft system and an implementation method. The car anti-theft system comprises a micro controller, a sensor module, a GPS module, a voltage stabilization circuit, a clock circuit, an anti-theft alarm module, a GSM module and a liquid crystal display module; through the design of each module of the system, signal processing of the sensor module, communication and positioning of the GSM module, display of the liquid crystal display module, alarming of the anti-theft alarm module and control of a car execution mechanism are achieved, and synchronous display of latitude and longitude coordinates on a mobile phone APP and a computer can be achieved. According to the system, an interactive platform among a car, a car owner and a monitoring centeris established, remote control and precise positioning of the car can be achieved, and thus good effects are achieved. Each part of the system adopts low-cost module devices with low power consumption, and the system is convenient to operate, easy to use, comprehensive in function and wide in use range and has a high application value.

The invention discloses a process for preparing protein powder from rice. The process is used for extracting and preparing protein in rice; therefore, deep processing of the rice can be realized; andthe additional value of the rice is improved. According to the adopted technical scheme, the process for preparing the protein powder from the rice comprises the following steps of: performing enzymolysis on starch in the rice by utilizing amylase to obtain saccharides, and extracting the saccharides to obtain high fructose corn syrup. Solid substances obtained in the preparation process are cleaned, filtered, dried and smashed to obtain the rice protein powder; and the additional value of the rice can be effectively increased.