851results about How to "Less intrusive" patented technology

A system for producing corrective movement in a subject's teeth includes a dental aligner device having one or more through-holes and one or more connectors fixed to the subject's teeth. The connectors can snap into the through-holes when the dental aligner is worn on the subject's teeth.

A dyslexia screening test system suitable for clinical use includes an integrated headset that efficiently and conveniently performs an auditory evoked response (AER) test by positioning electrodes about the ears of the subject. An integral control module automatically performs the test, providing simplified controls and indications to the clinician. A number of screening tests that are stored in the headset are periodically uploaded for billing, remote analysis and result reporting.

A user input panel dynamically expands to accommodate user input, such as handwritten or keyboard input. Expansion may occur in one or two out of four possible directions, depending upon the language to be written or typed. For example, when writing English words, the input panel may expand to the right as the user writes and then downward when the input panel has fully expanded rightward.

The invention discloses a low-altitude autonomous navigation system for a rotary-wing unmanned plane. The low-altitude autonomous navigation system is composed of a data acquisition device, a data preprocessing module, a data fusion module, a guidance control loop module and an attitude control loop module. The data preprocessing module is used for carrying out sampling filtering and error compensation on current location data information collected by the data acquisition device; the data fusion module is used for carrying out fusion and updating and obtaining a current position and speed of the rotary-wing unmanned plane; the guidance control loop module is used for calculating an expected attitude angle and an expected height value; and the attitude control loop module is used for generating a controlled quantity. According to the technical scheme, a problem of poor attitude estimation precision of the conventional navigation system can be solved; and requirements of high-precision heading attitude calculation and position and speed fusion of the rotary-wing unmanned plane can be met. High-precision filtering of the system is realized. On the basis of the analysis and calculation of the autonomous navigation system, the flight route and height can be corrected and the flight attitude can be adjusted autonomously; and the autonomous flight of the unmanned plane can be realized.

Systems and methods are provided for characterizing electrical activity of a patient for making a pregnancy-related diagnosis. The system includes a wearable device for measuring an electrical impedance of a cervical tissue of the patient based on a signal applied to the cervical surface by the device. The system also includes a transmitter coupled to the wearable device for transmitting the measured electrical impedance of the cervical tissue to an analysis system for making a pregnancy-related diagnosis based on the impedance data.

The present invention discloses an all-natural plant composite preservative and preparation method and preservation method thereof. The preservative comprises, by weight percentages, the following ingredients: 0.02%-4% of star anise extract, 0.01%-3% of thyme extract, 0.01%-2% of origanum vulgare extract, 0.02%-5% of litsea cubeba extract, 0.5%-3% of chitosan, 0.05%-12% of emulsifier, and the balance of distilled water. The preservative prepared by the present invention has excellent effect for inhibiting the rot-causing pathogens appeared during the storage of fruits such as cherry; is easy used; can be used to soak fruits or sprayed directly onto fruits; can reduce the rot rate of cherry by more than 50% after room temperature storage for 7 days, compared with a blank group; can also slowdown the water loss of the cherry, maintain the quality of the cherry, and improve the marketability of the cherry.

A dust monitor is disclosed that is suitably deployed in dusty environments and capable of providing near real-time indications of exposure to airborne particulates. The monitor includes a filter and filter assembly made of materials that do not interfere with subsequent instrumental (such as spectrometric) analysis for detecting and/or quantitating an analyte. In some disclosed embodiments, the filter is made of nylon or other material that is readily subjected to thermal destruction prior to spectrometric analysis. The dust monitor also includes a humidity correction feature that permits the filter to be made of ashable organic materials even if those materials are not highly hydrophobic. Transport devices are provided for shipment of the filter and/or filter assembly to an analytical laboratory which prevent loss of particulate matter and which facilitate an accurate analysis procedure.

The invention provides a distributed service tracking method and system, a storage medium and electronic equipment. The method comprises the steps of receiving multiple user requests, and generating tracking IDs for each user request; according to each user request, calling multiple multiple child threads in a service process of the user request respectively, transferring the tracking ID of the user request to the called multiple child threads, and generating calling IDs for each child thread; collecting log information generated by calling of each child thread, and identification is conductedthrough the tracking ID of the corresponding service process and the calling ID of the child thread; the calling IDs with the same tracking ID are taken as a set of call chain, log information of call chains of the user request is collected to form service logs of the user requests; service logs of different user requests are stored in different partitions of a data base respectively. According to the method, the service logs of the user requests are tracked by the tracking IDs and the calling IDs, and low intrusion, loss and delay and high reliability are achieved on the basis of guaranteeing tracking needs.

The invention belongs to the technical field of building materials, and particularly relates to a polymer modified asphalt rubber material and a preparation method thereof as well as a waterproof coiled material. Aiming to solve the technical problems of poorer high temperature performance, low temperature performance and anti-aging performance of an existing modified asphalt rubber material, the polymer modified asphalt rubber material and the preparation method thereof are provided. A raw material formula the rubber material comprises petroleum asphalt, a polymer modifying agent, softening oil, a tackifier, tyre rubber powder, an organic additive and an inorganic nano-material. Meanwhile, the invention also discloses the preparation method of the polymer modified asphalt rubber material. The polymer modified asphalt rubber material provided by the invention has better high temperature performance and low temperature performance; moreover, according to the waterproof coiled material containing the polymer modified asphalt rubber material, the aging resistant performance is enhanced, and the service life of the waterproof coiled material is prolonged.

The invention provides a biodegradable resin material applied to oil and gas fields and a preparation method for the biodegradable resin material. According to the preparation method for the biodegradable resin material applied to the oil and gas fields, two or three polymers of polyglycolic-colactic acid, polycaprolactone and polylactic acid and a chain extender are subject to melt mixing reaction to obtain a resin alloy, namely the biodegradable resin material applied to the oil and gas fields. The biodegradable resin material applied to the oil and gas fields is prepared from the method, can be prepared into the shapes of sheets, powder, granules, spheres and the like, or can be prepared into the shapes of the sheets, the powder, the granules, the spheres and the like by one of the polyglycolic-colactic acid, the polycaprolactone and the polylactic acid, is used for temporarily blocking filtrate to protect a reservoir, temporarily blocking a blast hole, a constructed layer section and the like in various construction (well drilling, well completing, well repairing, and acidizing and fracturing) operations of the oil and gas fields, and has the advantages of complete degradation and zero damage to stratum.

The invention discloses a method for a traffic monitoring and business service quality guarantee strategy based on SDN. The method comprises the following steps: a. creating a network topology under the SDN architecture, configuring an Openflow switch, and establishing a connection between the switch and an SDN controller; b. providing an open northbound API interface on the SDN controller; c, obtaining, by an application system program, complete device information and link information; d, inputting the business to be guaranteed according to the business requirements; e, according to a sourcedestination address of the service flow, transmitting an algorithm class to calculate a scheduling path, and generating the optimal scheduling path of the current network; f. transmitting the scheduling path in e into a strategy generation class, generating a scheduling flow table in combination with the business guarantee strategy in d, and issuing the scheduling flow table into the switch; and g. adding a data transmission queue to a switch port according to the scheduling flow table in f. By adoption of the method disclosed by the invention, the stable operation of the network business, theefficient use of the link bandwidth and the maximum optimization of the whole network performance are maximally guaranteed.

There is provided a method of making a conductive assembly for use in textiles, the method comprising providing a composite material comprising: a temporary substrate having a first surface and a second surface opposite the first surface; a stitching pattern comprising a plurality of lockstitches on the temporary substrate, such that a conductive thread is disposed at the first surface of the temporary substrate and a thermo-fusible thread is disposed at the second surface; and an insulating layer comprising an adhesive on top of at least part of the conductive thread on the first surface, the adhesive having an activation temperature which is higher than the Vicat softening point, as measured by method A120 of ASTM D1525, of the thermo-fusible thread; and heating the insulating layer and thermo-fusible thread to the activation temperature and curing the adhesive in the insulating layer of the composite material, thereby securing the conductive thread to the insulating layer. Articles according to the process are also provided.

A heater effectively uses a current controlled fan motor in series with a resistance heating arrangement. The fan motor preferably is wound with a gauge of wire to appropriate for the relatively high current provided to the fan motor. This arrangement is effectively used to adjust the fan speed to match the heat output when the heating arrangement has variable heat output. More desirable operating characteristics are achieved without increasing costs and fan motor manufacturing savings are realized. The portable heater preferably produces heat at different outputs and the current used to power the resistance heating arrangement is used to power the fan motor.

The invention discloses a red light semiconductor area array light source device for laser display. The red light semiconductor area array light source device for laser display comprises a VCSEL area array and a microlens array, wherein the VCSEL area array at least comprises a plurality of VCSEL units which are used for emitting circular laser beams, and the microlens array is formed by a plurality of microlens and used for performing collimation rounding on the laser beams output by the VCSEL area array and outputting the laser beams. The light source device can reduce optical elements in a projection display optical path, shorten the length of a lighting optical path, and improve the optical energy utilization rate. In addition, the VCSEL area array can reduce interference between VCSEL lasers and weaken laser speckles, and therefore projection display quality is improved. According to the red light semiconductor area array light source device, the area array light source packaging technology and VCSEL are adopted, a two-dimensional array is easy to integrate, and the defect that power transmitted by a single tube is poor can be overcome. The VCSEL is available in wafer test, reduces cost greatly and is easy in modularization and packaging.

The invention discloses coarse-aggregate-containing C220-strength-grade ultrahigh-performance fiber concrete and a preparation method. The concrete is composed of, by mass, 545 parts of cement, 63 parts of water, 900 parts of rubble, 750 parts of fine aggregate, 72 parts of coal ash, 65 parts of rice husk ash, 140 parts of silicon ash, 15.5 parts of water reducer, 11.5 parts of excitant, 1.7 parts of cellulosic fiber, 78 parts of steel fiber, 48 parts of hydroxyl modified carbon nanotube dispersion, 50 parts of oxidized graphene dispersion and 2.9 parts of defoamer. The concrete prepared by the method has high toughness and durability and has high binding strength with section steel, compressive strength reaches 224.31MPa, bending strength reaches 47.45MPa, splitting tensile strength reaches 22.37MPa, the binding strength with the section steel reaches 8.92MPa, and chlorion anti-permeation grade reaches VI grade. When the concrete is used in a section steel and concrete combined structure, cooperative working performance between the section steel and the concrete can be brought into play effectively, and the defects that the section steel and the concrete are poor in binding performance and respective mechanical performance of the section steel and the concrete cannot be brought into full play are made up.

An embodiment of the invention provides a data permission control method and device for application system clusters. The method includes: receiving an access request which a user submits in an application system cluster; when the fact that the user has data permissions is determined according to the access request, acquiring a data permission set corresponding to the user, to be specific, searching for one or multiple characters corresponding to the user, searching for one or multiple standard functions corresponding to the one or multiple characters and searching for one or multiple dimensions corresponding to the one or multiple standard functions; acquiring a current data permission set of the user according to the one or multiple dimensions. The data permission set includes standard data permission sets. The data permission control method and device for application system clusters according to the embodiment has the advantages that parameter-based fine-grained permission control is achieved, few modifications are made to the application system clusters, few invasions are caused to the application system clusters, and accessing is simple.