2133 results about "Living body" patented technology

The invention relates to the technical field of information security, provides an intelligent warehouse login verification method and system based on dynamic living body detection, and is used for realizing accurate generation of an identity label vector, enhanced authentication of a dynamic password and automatic matching of warehouse authority while accurately performing living body detection. And the security and convenience of warehousing system login are comprehensively improved. The method comprises the following steps: collecting real-time interaction action data of a warehousing system login user, calling a preset living body detection algorithm to carry out dynamic biological characteristic analysis on the real-time interaction action data, and generating a living body verification confidence coefficient and a user identity identification vector; performing dynamic password enhanced authentication according to the living body verification confidence coefficient and a preset security authentication threshold value, and generating a dynamic access token containing multiple layers of encryption identifiers; and based on the user identity identification vector and the dynamic access token, executing storage permission automatic matching processing, and outputting a login verification result associated with the user permission level to the storage system according to the permission matching label.

The invention discloses an MES (Manufacturing Execution System) login authentication method based on a face recognition technology, which relates to the technical field of industrial information security, and comprises the following steps of: constructing an authentication data acquiring a face image of an authorized user of an MES, extracting a reference face feature template after preprocessing, and constructing the authentication database; performing associated storage on the reference feature template, user identity information, preset operation authority and affiliated production station information to form an authentication database; according to the method, spoofing attacks are prevented through multi-mode living body detection, and the problem that a traditional password / key is easy to leak and borrow is solved in combination with uniqueness of human face biological characteristics; a person-post-terminal binding mechanism further limits permission abuse, and internal operation risks are reduced; the non-contact authentication does not need to memorize a password or carry a physical key, and is suitable for a working scene that a workshop operator wears gloves and holds tools; and the recognition passing rate in a complex industrial environment is improved through dynamic threshold optimization.

The invention discloses a non-living aquatic product supply chain quality deterioration visual early warning method, and belongs to the field of non-living aquatic product dynamic monitoring, and the method comprises the following steps: S1, synchronously collecting the physical appearance, quality indication labels and environmental parameters of non-living aquatic products, and constructing a multi-dimensional data set; s2, extracting complementary features, and outputting weighted fusion features; s3, establishing a residual shelf life prediction model, and obtaining a residual shelf life prediction value and a confidence interval; s4, based on the residual shelf life prediction value, constructing a supply chain digital twinborn body, and mapping a physical entity state in real time; and S5, continuously optimizing parameters of the residual shelf life prediction model. By adopting the non-living aquatic product supply chain quality deterioration visual early warning method, multi-modal feature deep interaction, digital twinborn visualization and adaptive iteration are fused, a data acquisition-feature fusion-prediction early warning-model evolution closed loop is constructed, and the limitation of a traditional single-modal and static model is broken through.

The invention relates to the technical field of medical instruments, and discloses an implantable neural electrode for long-term electrophysiological signal monitoring and a preparation method and application thereof. The neural electrode comprises an upper hydrogel insulation packaging layer, a lower hydrogel insulation packaging layer, an electrode site, a connecting line and a bonding pad, wherein the electrode site, the connecting line and the bonding pad are arranged between the upper hydrogel insulation packaging layer and the lower hydrogel insulation packaging layer, and the electrode site and the bonding pad are connected through the connecting line. The electrode sites, the connecting lines and the bonding pads are made of conductive hydrogel; the upper hydrogel insulation packaging layer and the lower hydrogel insulation packaging layer are made of insulation polymers and hydrogel. The insulating polymer is a plasma surface-modified insulating polymer. The preparation method of the neural electrode is simple and efficient, biotoxic materials are not introduced in the preparation process, good biocompatibility is achieved, continuous monitoring in a living body can be achieved for one year, important application value is achieved for studying signal response and neural circuits of all brain regions, and a beneficial tool is provided for long-term in-vivo monitoring.

The invention discloses a near-infrared fluorescent probe for detecting ONOO <-> as well as a preparation method and application of the near-infrared fluorescent probe, and belongs to the technical field of peroxynitroso ion detection. The near-infrared fluorescent probe for detecting ONOO <-> provided by the invention is high in detection speed, and the highest fluorescence intensity can be reached within 60 seconds; the reaction is obvious and easy to observe, when the compound reacts with ONOO <->, strong red fluorescence can be generated, and the change of the color of the solution can be observed by naked eyes; the selectivity is strong, the sensitivity is high, the interference of other biological molecules and active substances can be effectively avoided, the accuracy and the reliability of a detection result are ensured, and the lowest detection limit can reach 107nM; the hydrogel has good biocompatibility, is low in toxicity in a living body, and does not generate adverse effects on normal physiological functions of a biological sample; the provided preparation method is simple and easy to operate, the raw materials are low in cost and easy to obtain, the synthesis efficiency is high, and the preparation method can be used for large-scale industrial production and has wide application prospects.

User authentication, spoofing and replay attack prevention, liveness detection, and user-and-document verification using a live video stream with spatial challenges. A camera of an electronic device captures and transmit a live selfie user-facing video, as part of a user registration process. The user is instructed to spatially move his body or face, such that his face would appear within a first particular on-screen shape; and to also, concurrently or simultaneously, spatially hold in his hand or move a particular an identification document such that it would appear within a second on-screen shape. Optionally, the on-screen shape moves on the screen, and the user is required to spatially move the relevant item to keep it within the boundaries of the moving on-screen shape. The system then analyzes the video via computerized vision, to determine whether the user complied with the spatial manipulation challenges.

The invention discloses a method for constructing a multicellular living body material by adopting a droplet bioreactor, which belongs to the crossing field of biological materials and microbial engineering, and comprises the following steps: (1) resuspending different cells in different polymer solutions to prepare degradable or phase-separable hydrogel particles containing cells; (2) dispersing the hydrogel particles in a cross-linkable hydrogel matrix to form a composite hydrogel; and (3) curing the composite hydrogel, and then carrying out degradation treatment to obtain the liquid cavity structure multicellular system bioreactor with spatial partition and dynamic interaction characteristics. According to the invention, ordered distribution and metabolism synergy of different microorganisms in space can be realized, controllable degradability and excellent mass transfer performance are realized, bacterial slow release and metabolite exchange can be maintained, and the method is suitable for long-term stable operation of a continuous flow reactor. The method has wide application prospects in the fields of green biological manufacturing, renewable energy source production, environmental restoration, biomedical engineering and the like.

The invention provides a tumor living body sampling device, and relates to the field of biological sampling, the tumor living body sampling device comprises: a sampler main body, the sampler main body is a pistol-shaped structure; the inner sampling needle is coaxially and rotatably connected to the inner side of the reversing seat, the inner sampling needle is rotatably connected to the inner side of the sampling outer cylinder, the right cross sections of the sampling outer cylinder and the inner sampling needle are of arch-shaped structures, and the right end parts of the sampling outer cylinder and the inner sampling needle are of needle-shaped spine structures; hollow sampling openings are formed in arch-shaped parts on the right sides of the sampling outer cylinder and the inner sampling needle; the sampling transmission assembly is arranged in the sampler main body, and the sampling operation block drives the sampling outer cylinder and the inner sampling needle to rotate reversely at the same time through the sampling transmission assembly. The tumor tissue is rapidly and completely cut off, tearing damage is avoided, samples are isolated from the tissue, the samples are prevented from being mixed, and the problems that in the existing sampling process, the tissue is difficult to effectively cut off, tissue tearing is easily caused, and tissue samples are not pure are solved.

A betavoltaic power source. The power source comprises a source of beta particles and a plurality of regions for collecting the beta particles and for generating electron hole pairs responsive to the beta particle flux. The power source is intended for in vivo applications and is scaled to fit within a catheter for placing the power source and one or more sensors or activators within a living body. Preferably, a secondary power source is charged by a current developed by the electron hole pairs for providing constant power to the sensors or activators.

The invention provides a three-dimensional tracking scanner with a face recognition safety system and a control method. The three-dimensional tracking type scanner comprises a scanner body; the face recognition module is connected with the scanner body and comprises a binocular camera assembly which is used for responding to the situation that an object approaches the three-dimensional tracking type scanner and synchronously collecting left and right images of the object; the binocular reconstruction unit is used for establishing a three-dimensional grid model of a human face according to the left and right images when the detected object is the human face; the living body detection unit is used for carrying out living body detection on the human face by adopting a multiple detection mechanism based on the three-dimensional grid model; the face recognition unit is used for performing identity recognition on the user corresponding to the face under the condition that the living body detection is passed; and the control management system is connected with the face recognition module, and the control management system is used for allowing the user to execute an operation matched with the permission of the target identity on the scanner body under the condition that the identity of the user is the target identity.

The invention relates to the technical field of living body fingerprint detection, and particularly discloses a living body fingerprint detection method based on multispectral and micro pulse feature fusion, which comprises the steps of signal synchronous generation, time domain alignment processing, feature matrix generation, weight dynamic adjustment, cross validation analysis, abnormal region sampling, living body model verification and living body authentication output. According to the method, the verification result is generated by synchronously collecting the multi-spectral reflection intensity and the skin displacement fluctuation sequence of the fingerprint area, dynamically adjusting the spectral absorption and pulsation track feature weight, performing cross validation to output the local abnormal area and obtain the supplementary feature data, and performing physiological coupling rule matching by using the preset living body judgment model. When three consecutive results do not conform to a living body rule, activating an anti-counterfeiting attack alarm protocol; according to the method, multispectral and micro pulse features are fused, and an environment adaptive weight mechanism is combined, so that the accuracy of living body detection is effectively improved, and the environment adaptability of a detection algorithm is enhanced.

A device may include a first electrode configured to be worn on the skin of a living body at a first location. A device may include a second electrode configured to be worn on the skin of the living body at a second location. A device may include a controller configured to transmit, to the living body via the first electrode and the second electrode, a pulse waveform that includes a plurality of pulses in sequence, wherein: frequencies of the plurality of pulses are modulated based on a Brownian noise distribution, and amplitudes of the plurality of pulses are modulated in accordance with a sinusoidal pattern.

By producing the proper wave interference using superimposed angularly separate waves that overlap with the proper time-phase relationship (called “Time-Correlated Standing-wave Interference”), wave energy is amplified (by “Coherent Intensity Amplification”) and teleported to precise locations. For instance, in one application, energy is teleported to one or more areas within a living body for such therapeutic applications as destroying cancer cells or plaques within arteries. A system implementing this technique creates amplified constructive interference at one or more selected disease locations, while producing destructive interference at surrounding locations. In this application example, the technique allows energy to be “teleported” to tumor cells, plaques, or other diseased cells, for instance, to destroy them, while surrounding healthy cells receive virtually no energy, obviating collateral damage from the treatment. The same method can be used to diagnose disease by detecting energy teleported to different locations.

The invention discloses gallium ion-quercetin coordination nanoparticles (GQNPs) as well as a preparation method and application thereof, specifically, quercetin, gallium nitrate hydrate and polyvinylpyrrolidone are respectively dissolved in an absolute methanol solution to prepare a quercetin solution, a gallium nitrate hydrate solution and a polyvinylpyrrolidone solution; secondly, fully mixing the quercetin solution and the polyvinylpyrrolidone solution, dropwise adding the gallium nitrate hydrate solution, and rapidly changing the color of the mixed solution from faint yellow to orange yellow in the dropwise adding process; and finally, dialyzing the orange-yellow mixed solution to remove excessive gallium ions and polyvinylpyrrolidone, thereby finally obtaining the GQNPs. The prepared GQNPs and deferiprone show excellent treatment effects on cell and living body levels, are expected to be applied to treatment of Parkinson's disease through multi-dimensional anti-ferroptosis, do not show obvious toxic and side effects in the embodiment, and are expected to be applied to further preclinical research.

The invention belongs to the technical field of electric overhead working trucks, and provides a narrow-body self-walking working platform with a hybrid power system, which comprises a walking platform, a working device and a control system. The walking platform adopts a narrow-body four-wheel-drive chassis and is provided with a hybrid power system of a fuel engine and an electric pump, and the control system integrates an environment sensing unit, a stability calculation unit, a track prediction unit, an early warning unit and a control decision unit. The environment sensing unit constructs a high-precision three-dimensional environment map; the stability calculation unit calculates the overall gravity center position and the dynamic stability boundary of the platform in real time; the track prediction unit establishes a dynamic hydraulic system response model; and the early warning unit adopts an artificial potential field method to calculate a safety avoidance path. And the control decision unit automatically adjusts the control instruction according to the risk type and degree. According to the invention, the organic combination of environment perception, dynamic stable control, prediction trajectory planning and electrified body safety protection is realized, and the operation safety and efficiency of the aerial work platform are obviously improved.

The invention discloses a living body collateral state monitoring method and a related device, and relates to the field of data processing, and the method comprises the steps: obtaining the acoustic features, image features and positioning features of a monitored object, recognizing the scene of the environment where the monitored object is located at present, and determining the target weight distribution matched with the scene. And carrying out weighted fusion on the obtained acoustic features, image features and positioning features of the monitoring object based on the target weight distribution to obtain multi-modal fusion features. And finally, identifying the abnormal state of the monitored object based on the multi-modal fusion feature. According to the method, the complementary effect of the acoustic features, the image features, the positioning features and other dimension features is utilized, the recognition accuracy is improved, and the false recognition rate is reduced. Moreover, the scheme can identify the scene of the current environment and automatically adjust the weight distribution of each modal feature according to the scene characteristics to generate the unique fusion feature vector, and the robustness of the model to the environment is improved.

A vessel for transporting a living organ includes a container having an open top end and a closed bottom end, and a lid configured to selectively cover the open top end of the container and seal an inner chamber. The container includes a rigid outer housing, a rigid inner housing positioned within the rigid outer housing, and an insulating layer. The rigid inner housing defines the inner chamber, which is configured to hold a living organ. The rigid inner housing and the rigid outer housing define a closed cavity therebetween, in which the insulating layer is positioned.

The invention belongs to the technical field of aquatic product living body transportation, and particularly relates to a soft-shell crab transportation method. The method comprises the following steps: screening and cleaning, softening-keeping treatment, fresh-keeping treatment, microenvironment regulation and treatment after transportation. In the softening treatment, 0.1-3 PSU low-salt seawater containing 0.03%-0.08% of tetrasodium glutamate diacetate is used for soaking / covering, the fresh keeping is ethanol disinfection and 0.05%-0.30% of lemon grass oil emulsified spray, the temperature of the microenvironment is controlled to be 12-18 DEG C, the humidity is 85%-95%, and the oxygen content is 20.90-22.30%. After 72 hours of simulated transportation, the softness-keeping maintenance rate is greater than or equal to 88%, the survival rate is greater than or equal to 98%, the body surface bacterial colony inhibition rate is 91.4%, and the TVB-N value is 15.2 mg / 100g. The method realizes the synergy of softening, fresh keeping and live keeping, is suitable for large-scale transportation, and has high popularization value.

The invention discloses a near-infrared two-region aggregation-induced emission material as well as a preparation method and application thereof, and belongs to the technical field of aggregation-induced emission materials. The invention provides a fluorescent material with aggregation-induced emission (AIE) property, which can have high luminous efficiency in an NIR-II (1000 nm to 1500 nm) region. The invention aims to carry out rational structure design through the multilevel space confinement effect of molecule and aggregate levels. Through modification of a methyl group and a side chain substituent group, free rotation of an aromatic ring is effectively inhibited, and a rigid mortise and tenon interlocking structure is formed in the crystal. The water-soluble nanoparticles prepared from the synthesized aggregation-induced emission material can achieve a fluorescence quantum yield of 28.2%. By utilizing the nanoparticles with high fluorescence efficiency, the application of real-time dynamic monitoring and the like on intestinal vessels of a living body can be realized, and a new method is provided for early diagnosis and surgical intervention of acute intestinal ischemia.

The invention discloses a face anomaly detection method and device, equipment and a storage medium, and belongs to the technical field of face recognition. The method comprises the steps of firstly obtaining to-be-detected face data; performing living body detection based on the to-be-detected face data to obtain a living body detection result; and if the living body detection result is qualified, performing face recognition detection based on the to-be-detected face data, and executing corresponding processing operation according to the obtained face recognition detection result. According to the invention, the living body detection and the face recognition detection are successively carried out based on the obtained to-be-detected face data, so that the face recognition detection result is finally obtained and the corresponding processing operation is executed, and effective detection of the abnormal face condition is realized.

A device may include a first electrode configured to be worn on the skin of a living body at a first location. A device may include a second electrode configured to be worn on the skin of the living body at a second location. A device may include a controller programmed to transmit a pulse waveform to the living body via the first electrode and the second electrode, wherein: an amplitude of the pulse waveform is modulated according to a first oscillating pattern having a first period, and a phase of the pulse waveform is modulated according to a second oscillating pattern having a second period different than the first period.

The invention relates to the technical field of industrial aquaculture, and discloses a mandarin fish living body automatic grading method suitable for industrial aquaculture, which comprises the following steps: constructing a grading channel with gradually increased cross section area, and injecting constant water flow to form a flow field with gradually decreased flow velocity gradient; according to the method, mandarin fish individuals with different swimming capacities autonomously select adaptive flow velocity sections to reside, spatial layering is achieved, and then zoned collection is achieved, and through the synergistic effect of the flow field gradient and fish behavior instincts, traditional mechanical classification is converted into a stress-free autonomous standing process; meanwhile, the grading precision under the high-density working condition is ensured by means of an eddy current correction mechanism induced by a wedge-shaped groove of a flow guide grid, lossless evaluation of the physiological activity is achieved by multiplexing a flow field pulsation signal, and a multi-dimensional grading decision basis is provided for industrial aquaculture.

A method can include capturing biometric data of a subject via at least one computing device. The method can include rendering, on a display of the at least one computing device, at least one shape overlay. The method can include, during capture of the biometric data, receiving, via the at least one computing device, a tracing input of the at least one shape overlay. The method can include receiving the biometric data the at least one computing device. The method can include comparing the tracing input and the at least one shape overlay. The method can include, based on the comparison, determining that the biometric data satisfies at least one liveness threshold.

The invention discloses a near-infrared fluorescent probe DCM-MBS for detecting ONOO <-> as well as a preparation method and application of the near-infrared fluorescent probe DCM-MBS, and belongs to the technical field of peroxynitroso ion detection. The probe DCM-MBS is a water-soluble probe, the detection method is simple, ONOO <-> response is rapid, selectivity is good, specificity is high, detection sensitivity is high, interference of other biological molecules, active substances and the background of the probe can be effectively avoided, repeatability, accuracy and reliability of a detection result are ensured, and the detection method is suitable for large-scale popularization and application. Further, the requirement of real-time monitoring of the rapidly-changed ONOO <-> level in a living body is met; the color change is obvious and easy to observe, and qualitative in-situ real-time detection of ONOO <-> can be realized by naked eyes; the fluorescent probe has very excellent biocompatibility, can realize excellent fluorescence imaging in various cells and living mouse bodies, and does not have obvious toxic or side effects; the synthesis method is simple and efficient, raw materials are low in cost and easy to obtain, large-scale industrial production is facilitated, and wide market application prospects are achieved.

The invention discloses an access control authentication method based on multi-modal dynamic challenge and block chain auditing, and belongs to the technical field of access control authentication, and the access control authentication method comprises the following steps: collecting video, sound and motion data of a user, and carrying out dynamic living body detection; after detection is passed, face features, voiceprint features and gait features are extracted and subjected to fusion scoring, and after the score exceeds a threshold value, equipment trust chain verification is carried out according to a dynamic token generated after secret key exchange between the APP and the access control terminal; after the verification is passed, firstly performing deep counterfeiting detection on the whole face, and then performing deep counterfeiting detection on the details of the face; and finally, the authentication passing information is stored in the block chain, TxID verification is carried out when a receipt of certificate storage transaction success returned by the block chain is received, and the door is authorized to be opened after the verification is successful. According to the invention, forgery attacks can be effectively resisted, the false identification rate and the missed identification rate of the access control system are reduced, the auditing tracking and tamper-proof capabilities are greatly enhanced, and the identity authentication reliability in a high-security scene is guaranteed.

To provide a living body detection device capable of determining with higher accuracy whether or not a living body is present in a target area.SOLUTION: A living body detection device 1 includes a controller and a radar module. The controller executes a sampling process at measurement intervals (for example, 100 milliseconds). One sampling process includes storing, in a memory as a measurement data set, data that indicates transition of the reception strength of a reflected wave from when the radar module transmits an impulse signal as a search wave until a predetermined duration has elapsed. The controller generates an extraction data set obtained by extracting a detection value of the reception strength at a specific observation timing (in other words, an extraction point) from multiple measurement data sets. The controller analyzes the extraction data set to determine whether or not an occupant is present in a vehicle.SELECTED DRAWING: Figure 10

The embodiment of the invention provides an identity verification method and device, equipment, a medium and a product, and relates to the field of biological recognition. The method comprises the following steps: acquiring multi-modal biological characteristic data of a user, and analyzing the multi-modal biological characteristic data through a living body detection technology; wherein the multi-modal biological characteristic data comprises a combination of at least two of the following biological characteristics: fingerprints, irises, voiceprints and facial images; according to the type of a service to be executed by the user, dynamically adjusting a priority strategy of biological feature verification; and generating an identity verification result based on the living body detection result and the priority strategy. According to the scheme of the invention, through combination of the multi-modal biological characteristic data and integration of a living body detection technology, diversity and anti-cheating capability of identity verification are enhanced, meanwhile, the dynamic priority strategy can be adaptively adjusted based on a service type, a verification process is optimized on the basis of improving verification safety, and thus reliability of identity verification is improved.

The invention relates to the technical field of medical instruments, and provides an organ low-temperature perfusion system and a perfusion device.The organ low-temperature perfusion system comprises an organ bin and a perfusion assembly; the perfusion assembly is used for providing perfusion power and perfusing perfusion liquid into the blood vessel of the biological organ through the perfusion channel; the perfusion assembly comprises an oscillation generator, and the oscillation generator is used for applying alternating oscillation to perfusate, so that the perfusate flows in the perfusion channel and the blood vessel of the biological organ in a periodic oscillation state; a boundary layer can be broken by oscillating fluid flow, so that perfusate is more tightly attached to the surface of an organ, and the heat transfer efficiency is improved; the ice crystal structure which is being formed can be damaged, and the icing process is slowed down; a dead zone of fluid in an organ can be reduced, the uniformity of perfusate is ensured, the local temperature gradient is reduced, and tissue damage is reduced; in addition, the oscillating flow of the perfusate can more accurately simulate the physiological conditions in a real living body, and an environment closer to the interior of the living body is provided.

A breast-pumping care accessory and a care method are disclosed. The accessory includes a first attaching element, configured to be attached to a breast of a living body when in operation; a second attaching element; a heating element, located between the first attaching element and the second attaching element; a controller, electrically connected to the heating element; and an energy supply element, configured to supply electric energy to the heating element and the controller. The controller is configured to perform a care controlling method including: obtaining a target breast-pumping care mode; obtaining a heating curve based on the target breast-pumping care mode from a curve library and taking the heating curve as a target curve; and controlling the heating element to generate heat based on the target curve. The target breast-pumping care mode includes any one of a pre-pumping care mode, an in-pumping care mode, and a post-pumping care mode.

A device for oxygenating and shipping aquatic resource living bodies comprises an oxygen bag and a square box body, the square box body is a cuboid or cube box with the top open, concave handles are arranged on the two sides of the square box body, and limiting bottom supports used for being stacked and clamped in the box body on the lower layer are arranged at the bottom of the square box body; the oxygen bag is a square polyethylene oxygen bag, the square polyethylene oxygen bag is placed in the square box body, the length and the width of the square polyethylene oxygen bag are not smaller than the size of an inner cavity of the square box body, and the length and the width of the square polyethylene oxygen bag ensure that the periphery of the square polyethylene oxygen bag is tightly attached to the inner wall of the square box body after the square polyethylene oxygen bag is filled with water or oxygenated. The height of the square polyethylene oxygen bag is smaller than that of the square box body, and the top of the square polyethylene oxygen bag is provided with a bag opening which can be bound and sealed. The device for loading and transporting the aquatic resource living bodies through oxygenation can effectively avoid the situations of water leakage and air leakage caused by puncturing of sharp objects, can reasonably utilize the space for regular stacking and transportation, reduces the transportation cost, improves the working efficiency, and has obvious wide adaptability.