55results about How to "Avoid error introduction" patented technology

The apparatus and methods described herein enable an operator to simultaneously collect images and spectroscopic information from a region(s) of interest using a multiple modality imaging and/or spectroscopic probe, configured as a catheter, endoscope, microscope, or hand held probe. The device may incorporate, for example, an ultrasonic transducer and a fiber optic probe to translate images and spectra. The apparatus and methods may be used in any suitable cavity, for example, the vascular system of a mammal.

A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.

The present invention relates to a method and system for contacts management and an interface application for managing, searching and sharing electronic contact information of users of a group.

A drilling template for use in the field of producing aircraft or spacecraft or parts thereof has a first template part and a second template part. The first template part and the second template part are in each case provided here with means for fixing positions of bores to be produced. The drilling template has coupling means, by which the first template part and the second template part can be coupled to one another in such a way that the coupled template parts are movable relative to one another.

The invention provides improved systems, devices, and methods for analyzing a large number of sample compounds contained in standard multi-well microtiter plates or other array structures. The multi-well plates travel along a conveyor system to a test station having a microfluidic device. At the test station, each plate is removed from the conveyor and the wells of the multi-well plate are sequentially aligned with an input port of the microfluidic device. After at least a portion of each sample has been input into the microfluidic channel system, the plate is returned to the conveyor system. Pre and/or post testing stations may be disposed along the conveyor system, and the use of an X-Y-Z robotic arm and novel plate support bracket allows each of the samples in the wells to be input into the microfluidic network through a probe affixed to a microfluidic chip. A clamshell structure having a hinged lid can releasably support the chip while providing and/or accommodating the electrical, optical, structural, and other interface connections between the microfluidic device and the surrounding system.

This projector includes a laser beam generation portion, an image projection portion including a scanning portion and projecting an image on a projection area, a beam receiving portion receiving a laser beam reflected by a detection object through a lens, a control portion, and a position adjustment portion adjusting relative positions of the beam receiving portion and the lens in a direction orthogonal to the optical axis direction of the laser beam received by the beam receiving portion.

The invention discloses an indoor positioning fusion method based on UWB and Bluetooth technologies. According to the method, the advantages of two indoor positioning schemes are combined, a possibleregion of an estimated position is limited by use of the characteristic that a UWB range error is small, and the solving range is reduced; compared with the traditional method of estimating a positionaccording to a range, an RSSI value of a Bluetooth signal is directly utilized to obtain probability distribution in the solving region through Bayesian reasoning so as to solve the position, error introduction caused when the RSSI signal is calculated into a distance is avoided, and positioning precision is improved; the positioning precision of the UWB technology can be obtained in most cases just through one UWB base station and two Bluetooth base stations, and compared with a UWB positioning scheme which adopts four UWB base stations, the cost can be lowered to one quarter of original cost; and a particle swarm optimization algorithm is utilized to solve an extreme value under inequation constraint, a locally optimal solution can be obtained under the situation that the minimum valuedeviates from a real solution because an RSSI measured value error is large, and the method has a better actual use effect.

The invention relates to a precision assembly method of an eight-channel Kirkpatrick-Baez microscope. The precision assembly method is characterized in that every two reflective mirrors which are reversely and symmetrically arranged form a mirror pair, each mirror pair is respectively designed with particular mirror distance and mirror included angle, the positions of optimum view fields of channels are coincided, and an image point interval meets the microstrip interval of a multi-frame camera; after X-ray imaging experiment, the position coinciding of the optimum view fields is realized, and each image point is controlled within the microstrip range of the multi-frame camera; finally, the three pairs of adjusted reflective mirrors are bonded and cured into one set of eight-channel KB lens. Compared with the prior art, the precision assembly method has the advantages that the stricter requirement on optical components in the assembly process of the existing multi-channel KB lens is avoided, the problem of error causing in the existing indirect assembly type is solved, and the final assembly accuracy is high.

The invention discloses a microseism signal arrival time difference automatic picking method. The method comprises the following steps that microseism signals are collected by two sensors, the microseism signals are subjected to cross wavelet transform, results of cross wavelet transform are divided into an energy spectrum and a phase spectrum, the energy spectrum and the phase spectrum are self-coded, data is input into a neural network for calculation, and the result is the final microseism signal arrival time difference picking result. When the arrival time difference is calculated by the method, the arrival time does not need to be picked up independently for difference making then, two times of error introduction of independent arrival time picking can be avoided. Similar properties of homologous signals are adopted, the advantages of deep learning in extracting image feature information are adopted, and therefore signal similarity is matched, the homologous signals are accuratelyidentified, and the more accurate arrival time difference can be calculated. The method is high in reliability, high in accuracy, and is convenient and simple.

A method and apparatus for calibrating a gas chromatography instrument by forcefully shooting a measured droplet which securely passes through a confined passageway without direct intervention of human hands into the entry throat of the instrument so as to avoid contaminating the apparatus or impairing the accuracy of the instrument.

A blood glucose meter is provided. The blood glucose meter includes a body of the blood glucose meter, a lancing unit which is provided at one side of the body of the blood glucose meter and includes a lancet to puncture a skin in order to sample blood of a user, a sensor strip unit which is provided at another side of the body of the blood glucose meter which is different than the one side of the body at which the lancing unit is provided, the sensor strip unit being configured to sample the blood of the user, and a measurement unit which measures the blood sampled by the sensor strip unit. The blood glucose meter has the measurement unit which is integrally assembled with the body of the blood glucose meter and includes the lancing unit having the lancet and the sensor strip unit.

A belt retractor (10) includes a frame (12) provided with locking teeth (36). A belt reel (14) is rotatably supported in the frame (12) and provided on at least one axial end with ratchet teeth (38) adapted to engage in the locking teeth (36), when the belt reel (14) is shifted from a home position into a locked position. A locking bearing (32) interacts with the belt reel (14) on the side where the ratchet teeth (38) are arranged and keeps the belt reel in the home position up to a first load threshold. A load bearing (34) interacts with the belt reel on the opposite side and keeps the latter in the home position up to a second load threshold. The first load threshold is lower than the second load threshold.

There is provided a process for producing concrete, comprising: in producing concrete, previously providing at least one premix composition for a concrete mix, which has been measured and prepared by automatic control means according to properties required of the concrete; and kneading and mixing the previously provided premix composition for a concrete mix with cement, coarse aggregate, fine aggregates, and water. There is also provided a standardizing system for concrete production, characterized by comprising: measuring constituents of a premix composition for a concrete mix with an automatic control device; mixing these constituents together essentially without through human power to prepare a premix composition for a concrete mix according to properties required of the concrete; storing the premix composition; measuring the mass of a slurry composition of the premix composition with an automatic control device essentially without through human power; and kneading and mixing the slurry composition with cement, coarse aggregate, water, and a chemical admixture. There is further provided a standardizing system for concrete production in a concrete production plant, comprising kneading and mixing the above slurry composition of the premix composition with cement, coarse aggregate, fine aggregate and water in the concrete production plant. Concrete satisfying designed and planned property requirements can be provided in an easy and stable manner.

A method for positioning at least one catheter on a body in which a fluid is present includes performing a body-specific detection of anatomical structure and/or tissue structure. A position of the fluid in the body and/or the amount of fluid in the body are detected and at least one catheter is positioned such that at least a part of the fluid can be drained from the body. A method for simulating drainage of a fluid from an interstice of a body includes performing a body-specific detection of anatomical structure and/or tissue structure. A position of the fluid in the body and/or the amount of fluid in the body are detected and a location of at least one catheter on the body is set.

The grating layer of a surface emitting laser is divided into a first grating region and a second grating region along a horizontal direction. The second grating region is located at a middle area of the grating layer, while the first grating region is located in an outer peripheral area of the grating layer. Each of the first and second grating regions comprises a plurality of micro-grating structures. The grating period of the micro-grating structures in the first grating region is in accordance with the following mathematical formula:

in addition, the grating period of the micro-grating structures in the second grating region is in accordance with the following mathematical formula:

Wherein, Λ is the length of grating period, λ is the wavelength of the laser light, n_eff is the equivalent refractive index of semiconductor waveguide, m=1, and o=2. The first grating region is a first-order grating region, and the second grating region is a second-order grating region, so as to form a hybrid grating structure in the grating layer. The surface emitting laser emits laser light perpendicularly from a light-emitting surface defined by the second grating region.

The present invention provides a method of site-directed insertion to H11 locus in pigs by using site-directed cutting system, includes the following steps: 1) identify the targeted sequence targeted by the targeted cutting system in the targeted genome sequence of pigs; 2) design and construct the targeting sequence of the corresponding cutting system according to the targeted site; 3) construction of targeting vector; 4) transfect cells, identify the efficiency of fixed-point insertion by PCR amplification. The invention is dependent on the site-directed cutting system of H11 locus in pigs, to insert the target gene into the target site, in order to solve the problems such as low efficiency of traditional shooting technique, inconvenience design of PCR detection primer, harder to detect. The invention provides a method of site-directed insertion which can stably express the foreign gene at the H11 locus, to build an efficient platform for the production of transgenic pigs.