39results about How to "Not much time" patented technology

The invention discloses a variable thrust pintle injector. The variable thrust pintle injector comprises a central rod, a shell, a base and an axial moving mechanism. The central rod is provided witha conical head and can be driven by the axial moving mechanism to do axial reciprocating motion. The base comprises a circular truncated cone tail part and a sleeve part, an inner flow channel is formed between the sleeve part and the central rod and comprises an inner flow channel liquid collecting cavity, an inner flow channel contraction section and an inner flow channel flaring section, a shrinking ring is arranged on the inner wall surface of the head of the sleeve part, and a flaring slope is arranged on the inner wall surface of the head of the shrinking ring and intersects with the conical surface of the conical head. An outer flow channel is formed between the sleeve part and the shell, an inner flow channel inlet and an outer flow channel inlet are formed in the circular truncated cone tail part, the inner flow channel inlet is used for introducing liquid oxygen, the outer flow channel inlet is used for introducing methane, and the circular truncated cone tail part is hermetically connected with the tail of the shell. According to the variable thrust pintle injector, the phenomenon of adherent flow can be effectively improved, a pressure cavity is formed, so that the central rod moves up and down, variable flow adjustment is achieved, and the working range of an engine is widened.

The application discloses a system and method for recommending vehicle models. The system includes: a user classification unit, a user preference analysis unit, a user browsing record summery unit and a vehicle model recommendation unit. The method comprises the following steps: the user classification unit classifying registered users from multiple dimensions, and recording the number of users under each user class; the user preference analysis unit analyzing each browsing record of every user to obtain preference data of users; the user browsing record summery unit summarizing and analyzing user browsing records under each user class; the vehicle model recommendation unit, based on the user class which a current user belongs to and the preference data of the current user, calculating the recommendation score of all vehicles that are browsed by the users under the user class where the current user belongs, and recommending the vehicles that have higher recommendation scores to the current user. The system and the method make better pertinence and higher accuracy.

The invention discloses a method for rapidly determining nanofiltration membrane kind and operation conditions during water processing, and belongs to the field of nanofiltration membrane recovery during water processing. The method comprises the steps: (1) screening pressure X1, temperature X2 and water inlet flow X3 as response factors, and designing experiment combinations; (2) employing membrane flux Y1 and pollution index Y2 as response value; (3) immersing a nanofiltration membrane in pure water, pre-pressing for usage; (4) filtering wastewater by a precision filter; (5) performing filtration experiments; (6) at the beginning and after two hours of the membrane filtration experiments in the step (5), respectively employing a balance to measure the water outlet flux, employing a conductivity instrument to measure the conductivity, and employing an ultraviolet spectrophotometer to measure UV<254>, so as to obtain salt removing rate and organics removing rate; (7) determining a regression model equation; (8) determining optimum operation conditions; and (9) determining membrane performance evaluation index I. The method is capable of relatively rapidly performing quantitative evaluation on nanofiltration membrane performances and comparing various nanofiltration membranes through a quantification process.

The invention discloses a data caching method and system in a Web network management client based on a RIA and relates to the data caching field in network management systems. The data caching method comprises the steps of establishing an independent storage area; marking areas for arranging cache data in a physical memory as a resident memory data area and a non-resident memory data area; placing resident memory data and non-resident memory data in the resident memory data area and the non-resident memory data area respectively; releasing the resident memory data and non-resident memory data in the independent storage area regularly when the data are not used by users, and placing the resident memory data and non-resident memory data in the physical memory when the data are reused by users; and deleting all cache data after being used by users. According to the data caching method and system, the cache data can be placed in the physical memory and the independent storage area respectively according to requirements of users, less physical memory is occupied, the reading frequency of discs is reduced, and performances of the Web network management system are improved.

The invention discloses a method for rapidly establishing a full-text retrieval tool for common files, belonging to the field of retrieval tools. The method specifically comprises the steps that: (1) a document analysis module reads all the file analysis HTTP requests and sends the requests to a Chinese words segmentation module; (2) the Chinese words segmentation module segments attribute content in the received HTTP requests; (3) a full-text retrieval establishment module customizes a retrieval service type; (4) a retrieval module after analyzing a retrieval command performs corresponding operation and finishes establishment of the retrieval tool; (5) after a user submits search terms, the retrieval module performs word segmentation treatment on the search terms, generates an inquiry request and inquires in an index library and takes on the inquired result to the user. The method for rapidly establishing the full-text retrieval tool for common files realizes establishment of search engine dedicated to personnel and enterprises, personal retrieval requirements can be realized only by taking relatively little time and effort, and a plenty of internal files can be managed easily.

The invention discloses a method for preparing animal probiotics fodder by fermenting edible mushroom waste, straw and pasture. According to the method, the edible mushroom waste, the straw and the pasture serve as ingredients, the three types of animal probiotics, namely aerobiotic probiotic fungi, aerobiotic probiotic bacteria and anaerobic probiotic bacteria, serve as fermentative strain for conducting multi-step fermentation, the enrichment technique, the liquid fermentation technology and the solid fermentation technique are adopted in a combined mode for completing the fermentation and preparation of the animal probiotics fodder through seven steps, in the fermentation process, the growth and toxin metabolism of pathogenic bacteria are restrained effectively, the nutritional properties and palatability of the ingredients are improved, and finally the fodder containing high-concentration animal probiotics flora is obtained. According to the technical method, the fodder can be used by conducting fermentation for 4-5 days, 40-50 days are required by a traditional ensilage fermentation method, the method has the advantages of being short in elapsed time, little in manpower cost, high in efficiency, easy to learn and master, easy to popularize widely and the like, and the defects of the traditional fermentation method are overcome thoroughly.

The invention discloses an operation scheduling method based on seismic data, comprising the following steps: S1, acquiring resource information of cluster nodes; S2, calculating the complexity of seismic operation; and S3, scheduling seismic operation through an operation scheduling strategy based on a chaos algorithm. The method of the invention is based on a seismic operation scheduling strategy under the conditions of optimal total processing time and load balancing. Seismic operation scheduling is finally implemented through the seismic operation scheduling strategy based on the chaos algorithm according to the acquired resource information of the cluster nodes and the complexity of seismic operation.

The invention relates to the technical field of metallurgy and particularly relates to a gas-streaming slag collecting device. The gas-streaming slag collecting device comprises a slagging-off machineand a slag collecting device; the slag collecting device comprises a gearbox, a rack box, a gas supply pipe, a gas spraying gun and a servo motor; the rack box is driven by the gearbox; the rack boxcan do reciprocating motion in the horizontal direction after penetrating through the gearbox; the gas supply pipe is arranged inside the rack box; one end of the gas supply pipe is connected with thegas spraying gun through a rotary joint A; the servo motor is installed on the rack box; the servo motor is connected with the gas supply pipe and can be used for driving the gas supply pipe to rotate relative to the rack box; and the gas spraying gun is provided with a gas pipe which communicates with the gas supply pipe. The gas-streaming slag collecting device provided by the invention is small in space usage and can realize a steaming slagging-off process at all slagging-off sites; the gas spraying gun can rotate 360 degrees in the circumferential direction along with the gas supply pipe;in a gas-spray streaming process, the position and the depth of a spraying and blowing point can be controlled in real time; the slagging-off time, the temperature reduction of molten steel and gas consumption amount can be optimized; and thus the slagging-off cost is minimized.

The invention discloses a printing stock with a local 3D (Three-Dimensional) stereoscopic effect and a printing method thereof. The printing stock with the local 3D stereoscopic effect comprises a print body, wherein a background pattern layer is attached to the print body; an effect pattern layer for showing 3D stereoscopic effect is attached to the background pattern layer; and a lens corresponding to the background pattern layer is attached to the effect pattern layer. The printing method of the printing stock with the local 3D stereoscopic effect comprises the steps of computer drawing, film outputting, plate burning, printing and the like. The print stock and the printing method have the advantages of easiness for manufacturing, cost saving and attractive appearance.

The invention provides a hyperspectral target detection method based on conditional random projection characteristics, which can realize accurate and rapid detection of a target and can improve the sensitivity to the number of training samples. The invention provides a supervised feature selection and feature extraction method based on conditional random projection in the aspect of characterization of hyperspectral image spectral data. A projection parameter matrix related to data and labels is obtained, and conditional random characteristics are obtained through the projection parameter matrix, so that the accuracy of target detection is improved; Meanwhile, screening estimation and sampling are added in the whole operation solving process; that the time for screening estimation and sampling operation is less, the training time is short, the screening estimation and sampling operation is completed in an offline stage, and a result obtained by training is directly used during actual operation, so that the method has the advantages of high detection accuracy and high test operation efficiency.

The invention belongs to the technical field of powdery material packing and conveying and discloses an environment-friendly cement packing machine. The environment-friendly cement packing machine comprises a suspension beam, a power system is arranged above the suspension beam, and an upper cover device, an upper rotation body, a filling system, a bagging mechanism, an open-close plate breaking mechanism, a lower rotation body and a microcomputer weighing scale are arranged below the suspension beam in sequence; the open-close plate breaking mechanism comprises a power supply, an electromagnet connected with the power supply and a plate breaking electromagnet capable of controlling the power supply to be connected and disconnected and used for controlling a pressure bag rubber wheel to move; the lower rotation body comprises a connection cylinder fixed to a connection disc, a conical disc fixed to the lower portion of the connection cylinder and a lower supporting column fixed betweenthe conical disc and a storage bin; the microcomputer weighing scale is fixed to the bottom of a bagging rack. The environment-friendly cement packing machine can achieve automatic filling, weighingand bag removal on cement, the cement can be subjected to flow guide through a ventilation system and is prevented from blocking an ash outlet of an ash outlet hopper, the filling efficiency is improved accordingly, energy consumption is reduced, and the functions of saving energy and protecting the environment are achieved.

The invention discloses a method for evaluating biological integrity of benthonic animals of a freshwater ecosystem based on environmental DNA macro bar code monitoring data, and belongs to the technical field of biology. Based on the results of monitoring of the benthonic animals through environmental DNA macro bar codes, the method comprises a series of monitoring and evaluation processes including (1) determining a reference point and a damaged point; (2) collecting an environmental DNA sample; (3) performing biological monitoring on an eDNA macro bar code; (4) defining and calculating candidate biological indexes based on the eDNA macro bar code monitoring; (5) screening the candidate indexes; (6) selecting the biological indexes to calculate the biological integrity score of the benthonic animals; and (7) dividing health levels and the like. The method provides complete and easy-to-operate guidance for the evaluation of the biological integrity of the benthonic animals of the freshwater, and can be widely applied to the evaluation of the integrity of the benthonic animals and the evaluation of the water ecological health condition of freshwater ecosystems such as streams, rivers, lakes and reservoirs.

The invention relates to a preparation method and an apparition of a wet rubbing fastness improver containing copper microcapsules. The preparation method comprises the following steps: (1), silane modified ultrafine copper nanopowder is prepared; (2), the ultrafine copper nanopowder is ground and dried to constant weight; (3), the dried ultrafine copper nanopowder, 2,2'-azodiisobutyronitrile, divinyl benzene, butyl acrylate, methyl methacrylate and distilled water are mixed uniformly, tricalcium phosphate is added, and the mixture is subjected to ultrasonic vibration to obtain a dispersing liquid; (4) the dispersing liquid is placed into a flask with four necks to be subjected to heating, micro-suspension polymerization, heating and curing, and a product is washed with excessive hydrochloric acid solution and then washed to neutral to obtain the wet rubbing fastness improver containing the copper microcapsules. The prepared wet rubbing fastness improver containing the copper microcapsules can improve the wearability of fabric dyed with reactive dye, and the preparation method has the characteristics of simplicity, low cost, little time and labor investment, low toxicity of synthetic raw materials and reduction of environmental pollution.

The invention discloses a preparation method of a traditional Chinese medicine composition for preventing and treating irregular menstruation. The method comprises the following steps: concentrating a certain quantity of raw materials medicine including motherwort, cyperus tuber, sweetgum fruit, hemlock parsley, seed of cowherb and spatholobus stem into water extract diluted extractum by water extraction, or concentrating the raw material medicine into water extraction and alcohol precipitation diluted extractum by water extraction and alcohol precipitation, then putting dextrin, starch or the like used as substrates into a one-step granulating machine, spraying the water extract diluted extractum or the water extraction and alcohol precipitation diluted extractum used as a binding agent into the one-step granulating machine for one-step granulation, finally grinding grains, and adding other auxiliary materials to prepare traditional Chinese medicine preparation for oral administration. The method can significantly reduce the quantity of the auxiliary materials, shorten the processing time and the heating time for condensation and drying, avoid the damage to the effective ingredients of the traditional Chinese medicine composition, simplify the process flow and reduce the energy consumption. The flowability of the prepared granules is high, the disintegration of compressed tablets is fast, the production process is not easily polluted, and the quality of finished products is ensured well.

The invention discloses a system and method for preparing ammonia by SCR denitration urea heterogeneous catalytic hydrolysis, the system comprises a urea solution storage tank (1), an A urea solution delivery pump (2), a heterogeneous hydrolysis reactor (3) and a steam pipeline (4), and the heterogeneous hydrolysis reactor (3) adopts a tubular fixed bed reactor; wherein the urea solution storage tank (1) is connected with the heterogeneous hydrolysis reactor (3) through the A urea solution delivery pump (2) and a pipeline, and the steam pipeline (4) is connected with the heterogeneous hydrolysis reactor (3). The hydrolysis ammonia production system is simple in structure, a fixed bed tubular reactor is adopted, a urea solution is hydrolyzed under the action of a solid catalyst to generate ammonia gas and carbon dioxide, and the reaction is a liquid-solid two-phase reaction. At present, when most devices corresponding to urea homogeneous catalytic hydrolysis process reactions are modified, the system responsiveness can be improved, the system operation cost is reduced, and the waste liquid discharge amount is reduced.

Provided is a cooker which is provided with: a cooking recipe storage unit (202) which stores a plurality of cooking recipes; a color liquid crystal panel (61), which displays some of the cooking recipes stored in the cooking recipe storage unit (202); a touch panel (62); a control unit (200), which sequentially switches the cooking recipes displayed on the color liquid crystal panel (61) when a sliding/moving operation is performed by keeping a finger or a contact material touching the surface of the touch panel (62); and a cooking unit (203), which performs cooking on the basis of the cooking recipe selected by the touch panel (62).

The invention discloses a double-vacuum layer metal composite vacuum insulation plate. The double-vacuum layer metal composite vacuum insulation plate comprises a panel, a connecting layer and a vacuum cavity, and is characterized in that the panel is a metal plate or a metal composite plate; the panel and/or the connecting layer provide the additional strength to the vacuum cavity, and guarantee the flatness of the vacuum cavity under atmospheric pressure; the vacuum cavity is a closed cavity formed by performing the welding edge sealing under normal pressure and the high-temperature opening sealing under vacuum for the metal plate; the opening sealing is a step that an extraction opening prefabricated in the vacuum cavity is automatically sealed in a vacuum furnace by using a low-temperature solder according to a liquid sealing principle; the low-temperature solder comprises a low-temperature metal and an alloy solder; a spacing plate is arranged in the vacuum cavity for dividing the inside of the vacuum cavity into double vacuum layers; and support objects are arranged in the vacuum layers. A preparation method of the double-vacuum layer metal composite vacuum insulation plate is simple in process; and the prepared double-vacuum layer metal composite vacuum insulation plate can overcome the defects of a traditional insulation plate and a traditional vacuum insulation plate, and can be improved in strength, heat insulation, sound insulation and fire prevention performance.

The invention discloses a Ho-doped lanthanum vanadate HozLa1-zVO4 luminescent material (z is more than or equal to 0.0001 and less than or equal to 0.1) and a melting crystal growth method thereof. The melting crystal growth method comprises the following steps of: carrying out sufficient mixing, press forming and high-temperature sintering on raw materials prepared in proportion to obtain an initial raw material of crystal growth; placing the initial growth raw material into a crucible, and sufficiently melting through heating to obtain an initial molten mass of melting growth; and then growing by adopting melting methods, such as a czochralski method, a bridgman-stockbarger method, a temperature-gradient method and other melting methods. The HozLa1-zVO4 can be used as a luminescent display material, a laser operating substance of 2 micrometers, and the like.

The invention discloses a method for preparing a Chinese medicinal composition for preventing and treating menoxenia. The method comprises the following steps of: preparing a certain amount of certain raw material medicaments (motherwort, nutgrass galingale rhizome, beautiful sweetgum fruit, Szechuan lovage rhizome and cowherb seed) into water-extracted thin extract by adopting water extraction and concentration or water-extracted alcohol-precipitated thin extract by adopting water extraction and alcohol precipitation; then putting dextrin or starch and the like serving as substrates into a one-step granulator, and spraying the water-extracted thin extract or the water-extracted alcohol-precipitated thin extract serving as adhesive into the one-step granulator to perform one-step granulation; and finally, reshaping the granules, and adding other auxiliary materials to prepare a Chinese medicinal preparation for oral administration. The method can obviously reduce the amount of the auxiliary materials, shorten the processing, concentration, drying and heating time and avoid destroying effective ingredients of the Chinese medicinal composition; the prepared granules have good fluidity, and the pressed tablets are quicker to disintegrate; and the process flow is simplified, the energy consumption is reduced, the production process is not easily polluted, and the quality of the finished product is well guaranteed.

The invention provides a safe and reliable WEB-based internet bank security system, which exhibits more reasonable functional module layout and is highly decoupled. The safe and reliable WEB-based internet bank security system comprises an ORACLE data storing and processing device (1), an account opening module (2), a withdrawing module (3), a depositing module (3), an account transferring module (5), a loss reporting removal module (6), a loss reporting module (7) and an inquiry module (8), wherein seven functional modules of the account opening module (2), the depositing module (3), the withdrawing module (4), the account transferring module (5), the loss reporting removal module (6), the loss reporting module (7) and the inquiry module (8) are all complied by independent software programs; the seven functional modules are stored in the ORACLE data storing and processing device (1) in a distributed deployment way; and the ORACLE data storing and processing device (1) carries out high decoupling processing by adopting an ORACLE data processing technology.

The invention discloses a Cr, Tm, Ho-doped scandium vanadate CrxTmyHozSc1-x-y-zVO4 luminescent material (x is more than or equal to 0.0001 and less than or equal to 0.1, y is more than or equal to 0.0001 and less than or equal to 0.1, z is more than or equal to 0.0001 and less than or equal to 0.1) and a melting crystal growth method thereof. The melting crystal growth method comprises the following steps of: carrying out sufficient mixing, press forming and high-temperature sintering on raw materials prepared in proportion to obtain an initial raw material of crystal growth; placing the initial growth raw material into a crucible, and sufficiently melting through heating to obtain an initial molten mass of melting growth; and then growing by adopting melting methods, such as a czochralski method, a bridgman-stockbarger method, a temperature-gradient method and other melting methods. The CrxTmyHozSc1-x-y-zVO4 can be used as a luminescent display material, a laser operating substance of 2 micrometers, and the like.

The invention discloses a forgetting verification method based on semantic data loss in federated learning, and the method employs specific performances on some data which are high in loss, are commonly wrong, and are provided with a certain semantic feature to mark forgetting users and verify forgetting conditions. The method comprises the following steps: screening out data with high loss and general classification errors in a local data set, and re-marking the data as a certain fixed category according to similarity and confidence distribution of semantic features of the data to obtain a marked data set; and uploading the marked model after the local model is finely adjusted on the data set and the original data set to a central server for aggregation. The forgetting user verifies the forgetting condition according to the loss of the global model on the marked data set by checking the global model of the next plurality of cycles. The method has the advantages of being lightweight, high in continuity, good in verification effect, small in time and space overhead and the like, can effectively identify whether forgetting occurs or not, and can be widely applied and deployed in various scenes needing forgetting verification.

The invention relates to an easy-cleaning reaction kettle which comprises a kettle body. A reaction cavity is arranged in the kettle body, and a stirring shaft driven by a motor to rotate is arranged in the reaction cavity. A left mounting opening is arranged outside the kettle body and on the left side of the stirring shaft, and a right mounting opening is arranged outside the kettle body and on the right side of the stirring shaft. A J-shaped bended type right spraying pipe is arranged in the right mounting opening in an inserted matching way, and a left spraying pipe corresponding to the J-shaped bended type right spraying pipe is arranged in the left mounting opening in an inserted matched way. A plurality of spraying openings are evenly distributed on the left spraying pipe and the right spraying pipe. One water outlet is arranged on each of two sides of the lower end of the kettle body, and after washing, dirty water is discharged from the water outlets below, thereby avoiding detaching the kettle and opening a kettle cover, reducing time and maintenance cost in demounting the kettle body, and improving service life of the kettle body. The easy-cleaning reaction kettle is simple in structure and convenient to manufacture; and the service life of the reaction kettle is prolonged, the work efficiency is improved, and the maintenance time and maintenance cost are reduced.

The invention relates to a light and shadow special effect making method and device based on fractal noise. The method comprises the following steps: constructing a main body in a rendering area based on lines; determining the shortest distance from each pixel point in the rendering area to the main body; determining the light-emitting effect of the corresponding pixel point according to the shortest distance, and performing glow rendering at the corresponding pixel point according to the light-emitting effect; based on the texture sampling coordinates of the fractal noise transformation glow rendering result, obtaining a plurality of light and shadow effects; and carrying out superposition processing on all the light and shadow effects to obtain the light and shadow special effect. The method consumes less computing resources and time, and can be applied to the mobile terminal. In addition, the method supports flexible editing of the light and shadow special effects, and the generated light and shadow special effects have diversity, difference and real texture.

The invention discloses a grinding device for an aluminum alloy liquid tank truck plate, comprising a support platform, the bottom of the support platform is provided with outriggers, a plurality of rollers are arranged inside the support platform, and one side of the support platform is hinged Limit plate, the two ends of the support platform are provided with a lifting device, the lifting device is provided with a mounting plate, slide rails are provided between the mounting plates, screw rods are provided in the slide rails, and the mounting plate There is a motor and a start switch electrically connected to it, the screw rod is connected with the main shaft of the motor, the screw rod is provided with a sliding seat connected by thread, and the sliding seat is provided with two connecting arms through bolts, so One end of the connecting arm is provided with a grinding machine, and the two ends of the supporting platform are also hinged with a clamping device. This device has a simple structure, is convenient to operate, requires less manpower and time, and has an excellent grinding effect on the long side of the plate, effectively improving production. efficiency.

This invention relates to the task grade resource management method for a tiny kernel embed real-time operation system, which divides the resource into two parts: interior resource and exterior resource, wherein, to get and release the interior resource doesn't need the transfer system API; to get and release the exterior resource needs the specific application program interface of the system, which is more suitable in the task that has more complicated function. One task can occupy one interior resource at most. When task runs, resource is get automatically; when task ends automatically or happen to attempter forcefully and quit the running state automatically, the interior resource will be released automatically. One task can occupy multi exterior resource, wherein occupying and releasing exterior resource must follow the order, which is coming first and going finally.

The invention discloses a tunnel formwork transfer vehicle. The tunnel formwork transfer vehicle comprises a vehicle body, a hanging basket assembly and at least one lifting arm assembly, wherein thehanging basket assembly and the lifting arm assemblies are connected to the vehicle body; each lifting arm assembly comprises a lifting telescopic arm and a lifting arm connected to the top end of thelifting telescopic arm, one end of the lifting telescopic arm is connected to the vehicle body, the other end of the lifting telescopic arm is connected with the lifting arm, and the lifting arm is provided with a steel wire rope for lifting tunnel formworks; and the hanging basket assembly comprises a hanging basket telescopic arm and a hanging basket connected to the top end of the hanging basket telescopic arm, one end of the hanging basket telescopic arm is hinged to the vehicle body, and the other end of the hanging basket telescopic arm is connected with the hanging basket. The tunnel formwork transfer vehicle is compact in structure and high in bearing capacity, multiple sets can be subjected to transfer and installation at the same time during operation, the working efficiency isimproved to the great extent, the time is saved, and the tunnel formwork transfer vehicle is not restricted by the tunnel space and the construction field and meets the tunnel construction requirements.

The invention relates to an abnormality detection method for a bluish captured image. The abnormality detection method can detect the abnormality of the occurrence of a bluish image by analyzing pixel point features of a B channel in the color image in the format of RGB generated by a capture device. Through the above technology, the invention can carry out a timely failure diagnosis of the device of a capture system by analyzing the pixel point features of the B channel of the color image in the format of RGB generated by the device and by analyzing the captured image in a non-power-off state. The abnormality detection method is timely and highly efficient, saves human and material resources, takes less time and energy, and is highly efficient, intelligent, scientific, and suitable for promotion and application.

A biometric object matching method is disclosed. The method comprises capturing (210) a plurality of images of a single biometric object during a single activation of a biometric sensor and ranking (220) the images based on a ranking metric value of each of the images to determine a highest ranked image and at least one non-highest ranked image. The method also comprises comparing (230), in a first matching attempt for the biometric object, the highest ranked image to templates of a plurality of pre-stored biometric object templates, wherein a matching metric is determined for each compared template, and generating (270) a match indicating signal when it is determined (240) that at least one of the matching metrics exceeds amatching threshold value. Whenit is determined that none of the matching metrics exceed the matching threshold value,the method comprisescomparing (260), in a further matching attempt, one of the non- highest ranked images to templates of the plurality of templatesbased on the matching metrics. Corresponding arrangement, server node, systemand computer program product are also disclosed.