61results about How to "No attenuation" patented technology

The invention discloses a device for eliminating echoes of mobile terminals, which comprises an echo canceller, an automatic gain controller and a noise suppression module, wherein the echo canceller is used for eliminating part of echo signals thereof according to the correlation between upstream signals and downstream signals and then sending output signals to the noise suppression module; the noise suppression module is used for receiving the output signals sent by the echo canceller, filtering noises of environment and residual noises not eliminated by the echo canceller and sending the output signals to the automatic gain controller; the automatic gain controller is used for comparing the downstream signals with the output signals sent by the noise suppression module in real time to conclude a decrement and adding the decrement to the upstream signals to eliminate the residual echoes thereof. The device for eliminating echoes of mobile terminals of the invention solves the problem of destroying normal voice signals when eliminating echoes, such as too great voice attenuation, changes of operation mode into simplex, discontinuous voices, distortion and so on.

The invention relates to a hierarchical structure gaphene-based tensile tansparent conductive elastomer preparation method. The method comprises steps: after being stretched, the polymer elastomer is applied to an opening outer edge of an open container to form closed space, the container is heated, and the polymer elastomer is expanded; a reduced graphene oxide solution coats the expanded elastomer surface, cooling to room temperature is carried out, after restoring the initial morphology, the polymer elastomer is taken down, and thus, the hierarchical structure gaphene-based tensile tansparent conductive elastomer is obtained. The method of the invention is simple, the reaction condition is mild, no special equipment requirements is required, and mass production is facilitated; and the prepared hierarchical structure gaphene-based tensile transparent conductive elastomer presents excellent tensile performance while high transmittance and high conductivity are ensured, and experiments prove that the conductivity can still be smaller than 500 omega per square while the tensile ratio is larger than 400%.

The invention relates to rubber asphalt. The rubber asphalt is compounded from the following ingredients: base asphalt, waste rubber powder, an activating and recycling agent and a fixing and anti-aging agent. Accounted by total weight of the rubber asphalt, per 100% of the rubber asphalt comprises the ingredients in the following percentage: 70-89.4% of the base asphalt, 10-29.4% of the waste rubber powder, 0.1-1% of the activating and recycling agent and 0.5-1.5% of the fixing and anti-aging agent. A preparation method of the rubber asphalt comprises the following steps: heating the base asphalt to 120-160 DEG C; slowly adding the waste rubber powder and the activating and recycling agent into the heated base asphalt according to a certain proportion in a reaction kettle while stirring, wherein stirring speed is 300-1500 round / minute and stirring time is 5-20 minutes; raising temperature of the mixture to 170-180 DEG C, and performing high-speed shearing on the heated mixture by a shearing machine or a colloid mill for 5-30 minutes, wherein the shearing speed is 3000-5000 round / minute; and adding the fixing and anti-aging agent into the mixture and reacting the mixture while stirring for 2-5 hours. Compatibilities of the rubber powder and the asphalt are improved by the preparation method, so that the problem of instabilities of rubber asphalts in high-temperature storage is solved.

The invention discloses an antenna system, a mobile terminal and an antenna tuning control system. The antenna system comprises a parasitic antenna and an antenna feed point, and also comprises a top metal routing, a high frequency tuning module and a low frequency tuning module, wherein the top metal routing is used as the radiation body of the antenna system, wherein the distance from the top metal routing to the top frame is less than a first preset distance, and in addition, the top metal routing and an all-metal back cover are insulated; the high frequency tuning module is positioned on a PCB of the mobile terminal, connected with the parasitic antenna, and used for tuning the high frequency signals of the antenna system, wherein the PCB is used as the reference ground of the mobile terminal and electrically connected with the all-metal back cover; and the low frequency tuning module is positioned on the antenna feed point and used for tuning the low frequency signals of the antenna system. According to the technical scheme provided by the invention, the purpose of improving the communication effect of the mobile terminal under the premise that the mobile terminal adopts the all-metal back cover is fulfilled.

The invention discloses a server KVM remote control method and device. The method comprises the following steps: accessing a management interface to an out-of-band management network, connecting the management interface with an out-of-band switch through a cable, and connecting the out-of-band switch with a monitoring computer through the cable; transmitting data among the management interface, the out-of-band switch and a KVM control system through a TCP / IP; when the connection between the KVM control system and the management interface is normal, mounting a JAVA plugin for a browser of the monitoring computer; adding the management information of a remotely controlled server in the KVM control system; and clicking a remote management connection of the remotely controlled server in the KVM control system, and automatically opening a remote management interface of the remotely controlled server by the KVM control system. By implementing the server KVM remote control method and device disclosed by the invention, the following beneficial effects are achieved: the instruction is transmitted in time, the cost is saved, the time used for solving faults is shortened, and misoperation can be avoided.

Disclosed is a single-phase frequency self-adaptive genlock system having a pre-filtering function. The single-phase frequency self-adaptive gunlock system comprises an orthogonal signal generator based on a first-order complex integrator, a plurality of first-order complex integrator cascade units and a frequency self-adaptive controller which are connected in sequence. An input end of the orthogonal signal generator based on the first-order complex integrator is connected with a power grid voltage sampling signal. An output end of the frequency self-adaptive controller constitutes the output end of the system, and outputs frequency information of the power grid voltage sampling signal. Meanwhile, the output end of the frequency self-adaptive controller also feeds back the outputted frequency information of the power grid voltage sampling signal to the orthogonal signal generator based on the first-order complex integrator and the plurality of first-order complex integrator cascade units. The invention achieves the virtual orthogonal voltage reconstruction, effectively eliminates the impacts brought by DC noises mixed in sampling power grid voltage, can suppress the harmonics in the sampling signal, and the frequency self-adaptive controller eliminates the impacts of the power grid amplitude change on the frequency adjustment dynamic response speed.

The invention discloses a soil conditioner which is prepared from plant extract, an adsorbent and an adhesive, wherein the raw materials of the plant extract include alfalfa meal, aloe powder and soybean meal; the adsorbent is prepared from one or more of mineral substances such as bentonite, kieselguhr, vermiculite, montmorillonite and illite or humic acids or humates; and the adhesive is prepared from calcium salt and oxide thereof. The soil conditioner has the effects of comprehensively improving physicochemical properties of soil, increasing the fertilizer utilization ratio, promoting plant growth and the like, can be used for improving degenerated soil such as hardened soil, saline-alkali soil and desert soil, and also can be applied as conventional fertilizer for melons and fruits, cereals, vegetables and other crops.

The invention discloses a preparation method for special high-temperature pressure-bearing composite material insulator used for a petroleum logging tool. The preparation method is performed in the following steps: silanizing coupling pretreatment are first performed to high intensity glass fiber chopped strands, nano silicon dioxide and black carbon are added into the well treated glass fiber chopped strands or twistless roving or chopped strand mats in vacuum state, the components are positioned into a vacuum performing die for evacuation, crack resistant material and hydrophobic material are added into high-temperature resin glue to perform stirring and standing in the vacuum state; the sizing material after the standing is poured into a vacuum pressure pot, a valve is opened in order to ensure the sizing material to flow upward in countercurrent manner, in order to fill up the preforming die; the upper valve and the lower valve of the performing die are closed, the preforming die is positioned into oil to be heated, and then high temperature pressure bearing test is performed to measure the insulation value under the indexes of 175 DEG C and 140 MPa. The invention has the advantages of high temperature resistance, acid and alkali resistance, low cost, simple technology, and good insulation performance, and when the insulation value is higher than or equal to 500 M Omega, the insulator is determined to be qualified.

The invention relates to an electrochemical zinc-water hydrogen production and storage system which adopts an electrodeposited zinc electrode. The electrochemical zinc-water hydrogen production and storage system is characterized in that a zinc electrode current collector and a gas-separating electrode are separated and put in an electrolyte, and a positive-divalent zinc compound exists in an aqueous solution of the electrolyte to be a zinc source substance so as to form a unit of the electrochemical zinc-water hydrogen production and storage system which comprises the electrodeposited zinc electrode, the electrolyte and the gas-separating electrode and is mounted in a sealing container to form hydrogen production and storage units; the units or a unit group is connected with an electrolyte storage container and a pump to form the system, and the electrolyte storage container is provided with a water-supplementing passage and connected with a gas-liquid separating device. When hydrogen is produced by electric discharge, the gas-separating electrode is connected with a negative electrode of an external power supply, the zinc electrode is connected with a positive electrode of the external power supply, and a direct current is switched on so that an external voltage of each electrodeposited system unit is smaller than 500 millivolts. The system can circularly produce a great amount of hydrogen at low cost, has prolonged service life, is convenient to linearly amplify and can be used for matching with the oil saving and the emission reduction of internal-combustion engines and other oil-storing and combustion-promoting fields.

The invention provides a mobile terminal protecting frame and a mobile terminal. The protecting frame is coated with the outer side of the side of the mobile terminal and comprises signal enhancing components corresponding to communication modules in the mobile terminal. Each signal enhancing component comprises a metal segment and non-metal connectors; the metal segment is convex inward to form a plug structure, the plug structure matches with one plug hole structure of the side wall of the mobile terminal, when the protecting frame is coated with the outer side of the side of the mobile terminal, the plug structure is plugged into the plug hole structure and is connected to the corresponded communication module, and the metal segment is allowed to serve as an external antenna structure of the connected communication module; the non-metal connectors are located at two ends of the metal segment and are used for isolating the metal segment. By the aid of the technical scheme, the metal protecting frame can be prevented from weakening the mobile terminal antenna signals.

The invention belongs to the technical field of electrochemistry, and specifically discloses a method for improving electric conductivity of lithium iron phosphate battery anode material. Based on synthesizing lithium iron phosphate material by a conventional method, the method removes residual moisture in the lithium iron phosphate material by methods of injecting gas capable of dehydrating, pumping with a vacuum pump and absorbing water with phosphoric anhydride when calcining at high temperature so that the electric conductivity of the material is greatly improved. The lithium iron phosphate anode material treated by the method is used for preparing the lithium battery with the properties of high specific capacity, good safety, long cycle period and the like. The lithium / lithium ion battery prepared with the anode material is charged or discharges at a speed of 0.5C and the capacity thereof is up to 160mAh / g; the first charging / discharging effect thereof is near 100%; and the battery can be circularly charged or discharge above 100 times and substantially has no attenuate phenomenon.

The invention discloses a successive approximation type analog-to-digital converter based on noise shaping. In the successive approximation type analog-to-digital converter, a bootstrap boost sampling switch is adopted for sampling on a capacitive digital-to-analog converter, and a non-binary array is adopted for redundancy calibration; the noise shaping loop comprises a clock control module, a closed-loop dynamic amplifier and a switched capacitor module, the closed-loop dynamic amplifier amplifies the margin voltage after successive approximation, a positive feedback structure is added to improve the response speed, and in the switched capacitor module, the capacitance stacking technology is adopted for collecting, delaying and feeding back margin information to achieve the operation of adding the margin information with a sampling signal. The whole noise transmission function is realized, and the noise shaping effect is achieved.

The invention relates to an ultrasonic flowmeter (9) for determining and / or monitoring the volumetric and / or mass flow of a measuring medium (5) through a pipe or a measuring tube (1). According to the invention, the wall of the pipe or measuring tube (1) comprises a deformation (4) or deformations in the vicinity of the defined sensor position of the ultrasonic sensor (7) and / or in the vicinity of the sonic path of the ultrasonic signals of the ultrasonic sensor(s) (7). Said deformation or deformations is / are configured and / or located in such a way that the flow speed of the measuring medium (5) that is measured in the sonic path, or in the case of several ultrasonic sensors (7) the flow speeds of the measuring medium (3) that are measured in the sonic paths and / or the cumulative flow speeds of the measuring medium at least approximately corresponds or correspond to the average flow speed of the measuring medium (3) that is calculated over the area of the pipe or measuring tube (1).

The invention discloses a power source and Ethernet integrated aviation plug cable and belongs to the technical field of cable and communication technologies. The power source and Ethernet integrated aviation plug cable comprises an aviation plug, an aviation socket and a cable. The aviation plug comprises a power plug and an Ethernet crystal head socket. The aviation plug is connected with the cable. The aviation socket is mounted on a terminal device and comprises a power insulation socket and a via hole, and a cable crystal head penetrates the via hole. An isolation protective layer is arranged in the middle of the cable mounted in an enclosed metal shell. Products extruded from a one-off outer sheath are high in surface smoothness, ingenious in overall appearance, small in size, space-saving, material-saving, beneficial to mounting and laying, and capable of meeting using requirements; the power plug and Ethernet crystal head socket are integrated into one aviation plug with an appearance formed in one time, the aviation plug is high in dimensional accuracy and small in deviation, thereby being convenient to assemble; a power cable and a network cable share one sheath, so that one cable is enough for connection, and the power source and Ethernet integrated aviation plug cable is concise and attractive.

The invention relates to an electric lead, in particular to a carbon fiber composite core composition and a method for preparing a carbon fiber composite core. The composition comprises high-temperature epoxy resin, a curing agent, an accelerant and carbon fiber. The preparation method comprises the following steps that: the carbon fiber enters a coupling agent sprayer by a creel through a yarn-guide mechanism and a tension control mechanism; a tension controller adjusts the tension; a high-pressure spray head is arranged in the coupling agent sprayer to spray a foggy solvent; the fiber enters a vacuum injection pre-soaking device through the coupling agent sprayer to soak a high-temperature epoxy resin adhesive and then enters a heating molding mould to be cured and molded; the molding mould is divided into three areas for heating, and the three areas are a preheating area, a gelling area and a curing area respectively; the fiber is cured again by a drying cylinder after being cured; and the whole process is continuously driven by a hydraulic driving machine. Compared with the conventional lead, a carbon composite core lead has the advantages of light weight, high strength, low line loss, small sag, high temperature resistance, corrosion resistance, environmental friendliness and the like, and achieves the energy conservation, environmental protection and security of power transmission. The carbon fiber composite core composition and the method for preparing the carbon fiber composite core are widely applied to overhead power lines.

The invention relates to an easily-uncover aluminum plastic compound single film for a glass bottle sealing opening. The film comprises a body, wherein a compound layer, a base layer, and a heat sealing layer are arranged on the body in sequence; a blocking layer is arranged on the compound layer; the body comprises the components in percentage by weight: 29.47%-30.59% of low-density polyethylene, 39.05%-40.81% of linear low-density polyethylene and 29.72-30.36% of an ethylene-(methyl) acrylate copolymer. The film has the advantages that the low-density polyethylene, the linear low-density polyethylene and the ethylene-(methyl) acrylate copolymer are mixed for preparing the body, so that the glass bottle sealing opening is proper in fastness, and is proper in stripping force when being uncovered; a stripping interface is clean, an obvious attenuation phenomenon after refrigeration does not exist, and the film is wide in application range of packaged products; due to arrangement of the blocking layer, the body has the very good blocking performance, stiffness and forming performance, the blocking layer can enable the packaged products to obtain very good protection, the stiffness enables the compound film to be conveniently cut into single pieces, the forming performance enables pressing lines to be processed and arranged conveniently, and the use effect is good.

The invention provides an MEMS 5G communication radio frequency antenna, which comprises a cap wafer, a bonding interface, a substrate wafer, a micro antenna, a micro antenna anchor point, an intermediate wafer, a thin film filter and a vacuum cavity. The substrate wafer provides a base and an external integrated circuit for the micro antenna; the micro antenna anchor point is a contact part of the micro antenna and the substrate wafer; the intermediate wafer serves as a component of a conical side wall, and an opening is formed in the intermediate wafer; and the thin film filter is a piezoelectric thin film on a substrate wafer, and the thin film filter is formed. The invention discloses a manufacturing process of the MEMS 5G communication radio frequency antenna, and the process comprises the steps: forming a metal antenna model on a semiconductor substrate plane through photoresist on an integrated circuit wafer of silicon, glass, a III-V semiconductor, GaAs, GaN and the like through an LIGA-photoetching pattern and a plane electroprint casting method; the antenna has the advantages that the micro-mechanical design and process and the antenna protection material and structure are applied from the two aspects of antenna manufacturing and antenna vulnerability protection, so that signal attenuation is not caused, and the performance is stable.

The invention discloses a solar cell grounding device and method. The solar cell grounding method comprises the following steps of A, utilizing a DC (direct current) power supply to detect the DC output voltage of a photovoltaic module; B, carrying out step C when the DC output voltage of the photovoltaic module is higher than a predefined threshold and carrying out step D if the DC output voltage of the photovoltaic module is lower than the predefined threshold; C, enabling the DC output cathode of the photovoltaic module to be grounded through a resistor; D, enabling the DC output cathode of the photovoltaic module to be directly grounded. According to the solar cell grounding device and method, the DC power supply is used for detecting the working state of the photovoltaic module, when the photovoltaic module does not work, the output voltage of the DC power supply cannot make a relay to operate, the DC output cathode of the photovoltaic module is directly grounded, electrostatic charges are eliminated, and attenuation of the photovoltaic module can be avoided. When the photovoltaic module works normally, the output power supply of the DC power supply enables the relay to operate, the DC output cathode of the photovoltaic is grounded through the resistor, and the normal operation of the photovoltaic can be guaranteed.

This invention relates to the white light diode manufacturing method; it includes the standing, the packaging epoxy resin, the supporting cup, and others, the processing steps as following: a. within the supporting cup, implant the bonding material; b. place the luminous material above the bonding material of the supporting cup, and fix it with the standing together; c. roast to dry the bonding material; d. use the gold line connecting with the electrode of the luminescent material and the pin of the standing; e. use the epoxy resin to package, which form a fluorescent material bowl above the supporting cup; f. plate the reflective material at the bowl wall; g. in the bowl, fire the fluorescent material; h. dry the fluorescent material; i. package to the required shape; there is gap between the bowl and the supporting cup, and the gap is filled by the epoxy resin; due to the separation of the phosphor powder and the luminescent material, the heat generated by the luminous material does not cause the decay of the phosphor powder and improves the diode life; meanwhile, no phosphor powder in the luminescent material side, it reduces the phosphor powder scattering which can cause downward light, thereby improving the efficiency of light out.

The invention provides a dye sensitized solar cell capable of generating electricity on rainy days, preparation method and application thereof. The graphene oxide is deposited on an ITO conductive glass substrate by electrophoresis and is reduced to form a graphene electrode, and a pair electrode is deposited on an FTO conductive glass substrate or a platinum sheet is taken as a pair electrode to be combined with a dye sensitized solar cell to form a novel solar cell. The high stability, good conductivity, and high cation adsorptivity of grapheme are fully utilized, and through creative design, the performance of generating electricity on rainy days is endowed to the dye sensitized solar cell. The preparation method of the solar cell capable of generating electricity on rainy days is simple, the performance is stable, and the cost is low.

The invention discloses an elevator antibacterial button with a PT heating function. The elevator antibacterial button comprises a mounting box. A lifting frame is arranged at the top end of the mounting box. The top end of the lifting frame is provided with a connecting frame. The top end of the connecting frame is provided with a panel. The top end surface of the connecting frame is correspondingly provided with a mounting groove and a fixing groove. The fixing groove is located on the outer side of the mounting groove. A heating piece is arranged in the mounting groove. A light emitting plate is arranged in the middle of the bottom end of the panel and penetrates through the heating piece. A limiting strip is arranged on one side inside the fixing groove. A fixing strip is arranged at the bottom end of the panel. The light emitting plate is located on the inner side of the fixing strip. A limiting groove is formed in the bottom end of the outer side of the fixing strip. The fixing strip is located in the fixing groove. The limiting strip is located in the limiting groove. The heating piece is arranged at the bottom end of the panel, so that the antibacterial effect of the elevator button is effectively improved under the action of the heating piece.

The invention relates to a high-performance solid electrolyte and a preparation method thereof. The chemical expression of the electrolyte is CaHf(1-x)RExO(3-a), wherein the high-performance solid electrolyte is prepared by using CaCO3, HfO2 and an rare earth oxide RE2O3 as raw materials and adopting a technical route including pretreatment, material preparation, pre-grinding, pre-sintering, crushing, final grinding and final sintering. The electrolyte has the advantages of high density, high conductivity, large proton migration number, wide proton conductivity range, high temperature stability, high chemical stability and high corrosion resistance and has excellent comprehensive performance. The electrolyte is used in the technical fields of electrochemical hydrogen sensors, solid oxide fuel cells, hydrogen and heavy hydrogen extraction preparation, hydrogen isotope concentration, organic hydrogenation and dehydrogenation, electrochemical synthesis of ammonia and methanol and the like. The problems can be solved that existing solid electrolytes have low density, narrow proton conduction range, small proton migration number, low chemical stability, poor high temperature stability and the like.

The invention provides an XNOR circuit and an anti-nuclear-radiation chip. The XNOR circuit comprises a first threshold enhanced phase inverter, a second threshold enhanced phase inverter and an XNOR body. An input terminal of the first threshold enhanced phase inverter is connected with a first input terminal of the XNOR body; an output terminal of the first threshold enhanced phase inverter is connected with a second input terminal of the XNOR body; an input terminal of the second threshold enhanced phase inverter is connected with a third input terminal of the XNOR body; an output terminal of the second threshold enhanced phase inverter is connected with a fourth input terminal of the XNOR body. Therefore, the XNOR circuit has the excellent anti-nuclear-radiation capability.

The invention discloses a preparation method of metallurgy-prepared polysilicon solar cell, relates to a solar cell, and provides a preparation method of the metallurgy-prepared polysilicon solar cell, which can adopt silicon material with lower purity (5-6N) and greatly reduce the production cost. The method comprises the steps of adding a phosphorus source to the metallurgy-prepared polysiliconchip to be treated for a phosphorus gettering treatment and removing the gettering layer; leading oxygen with water vapour into the metallurgy-prepared polysilicon chip treated with phosphorus gettering and gettering layer removing for wet-oxygen oxidation, and removing the oxidation layer; and preparing the metallurgy-prepared polysilicon chips treated with the wet-oxygen oxidation and the oxidation layer removing into the cells according to a conventional process, and annealing the prepared cell chip.

The invention discloses a method for processing an electrode material, a processed electrode material and a lithium-ion battery. The method comprises the step that the electrode material is calcined in an inert atmosphere and an unsaturated carbon source gas, wherein the electrode material is an electrode material containing a transition metal element, an electrode material containing a silicon element or an electrode material containing a sulfur element. According to the electrode material obtained by the processing method of the present invention, the electrical conductivity is greatly improved, and a prepared battery has excellent rate performance.

The invention provides a glass ceramic body static inhibitor and a preparation method thereof. The static inhibitor comprises a glass ceramic substrate, a pair of inner-side electrodes and a pair of outer-side electrodes, wherein the inner-side electrodes and the outer-side electrodes are respectively positioned on the inner and outer sides of the glass ceramic substrate. The static inhibitor further comprises a cavity structure arranged inside the glass ceramic substrate. Through filling an organic filler, the sintering temperature and the sintering atmosphere during the manufacturing process of the glass ceramic substrate can be controlled, so that the glass ceramic substrate is formed through the splitting decomposition of the organic filler. Meanwhile, the interior of the glass ceramic substrate contains at least one part of gases generated during the splitting decomposition process of the organic filler. The pair of inner-side electrodes is positioned in the same horizontal plane. The outer end portions of the inner-side electrodes are respectively connected with the pair of outer-side electrodes at the two ends of the glass ceramic substrate. Meanwhile, the two inner-side electrodes are arranged at a preset interval to form a capacitor structure. At least the capacitor structure is enclosed inside the cavity structure. The preparation method is used for preparing the above static inhibitor. The static inhibitor is long in life cycle and is not easily invalid even after being used for a long period of time. Meanwhile, the short-circuit risk does not easily occur, and the triggering voltage is relatively low.

An expansion type cardiovascular piezometry catheter comprises a catheter body and an expansion sac, one end of the catheter body is provided with a conical port, and the other end of catheter body is provided with an inflating connector, the expansion sac is arranged on the body of one end of the catheter body close to the conical port, and the inflating connector is communicated with the expansion sac. No bubbles are generated in the catheter, resonance and attenuation are not caused during monitoring, and occlusion caused by blood clotting during monitoring can be well avoided. Monitoring results are accurate, and accurate pressure values can be obtained without time delay and extra steps. Besides, the expansion type cardiovascular piezometry catheter is resistant to alkali and acid corrosion, has the advantages of excellent organic solvent resistance, is non-toxic and pollution-free and can be widely used to substitute for existing materials on and on.

The invention relates to the technical field of automobile brake, and specifically relates to a drum-type brake lining. The drum-type brake lining comprises a plurality of arc-shaped steel backings, wherein two arc-shaped friction blocks are arranged on each arc-shaped steel backing, and are distributed at two end parts of the arc-shaped steel backing at a first predetermined distance; and the plurality of arc-shaped steel backings are distributed on an assembly surface of a brake drum in parallel at a second predetermined distance. The invention provides a drum-type brake lining which is simple in production process, low in production cost, good in heat dissipation effect, low in wear rate and few in eccentric wear phenomena.