176results about How to "Stability advantage" patented technology

There is described a sensor device which comprises light source means for emitting a light beam, photodetector means for receiving the light beam after passing through or being reflected within living tissue and arranged to provide signals corresponding to the intensities of the respective wavelength of light received by the photodetector means characterised in that the sensor device measures blood oxygen saturation. The device can be used in conjunction with a conventional pulse oximeter. There is also described a method of measuring blood oxygen saturation.

This invention deals with novel method and apparatus for positioning and motion control of the elements (mirrors) of a Fresnel reflector solar concentrator tracking heliostat array wherein the elements are suspended with the center of mass below the swivel point, or have an internal-swivel. This achieves an advantageous natural vertical stability. The torque to produce angular deflection, and rotational motion is provided separately by an electric wind force due to electrons, ions, and / or neutrals; or in combination with an induced and / or permanent dipole coupling to an electronic grid. Thus forces and torques are produced without the use of internal moving parts such as in motors. The instant invention exceeds the capability of conventional systems. It is ideally suited for maximization of solar energy focused by a low-profile concentrator array onto a receiver. Since there are no internal moving parts, the instant invention provides less costly and greater ease of manufacture. Dynamic motion can be controlled over a wide range of dimensions from nanometers to decimeters.

The invention provides a fluorine-18-marked pyridazinone analogue. The general structural formula of the analogue is shown as a formula (A), wherein G is selected from S, O or NH; R1 is alkyl with 1-6 carbon atoms; R2 is halogen or halogenation alkyl; L is phenyl, cyclohexyl or a hexa-heterocycle radical containing heteroatoms; m is 1, 2, 3, 4, 5 or 6; n is an integer of 1-15; and M is methylene or ethoxy. A compound marking method is simple, and has high radiation chemistry yield, high stability, a high myocardium initial uptake value, high target to non-target ratio and low using cost. The pyridazinone analogue is applied to the technical fields of radiopharmaceutical chemistry and clinical nuclear medicine as a novel fluorine-18-marked myocardial perfusion developing agent.

A videoendoscopic system (1) including an endoscope optical system (2) and a camera portion (3), the endoscope optical system (2) having an elongated shaft (4) through which an optical image guide (5) and a fiber light guide (6) pass, and an end housing (7), which is proximally connected to the shaft (4) and has an image exit window (10) and a light entry window (8) with radiation directions that are parallel to one another and to the axis of the shaft (4). The camera portion (3) includes a camera housing (15), from which an image signal cable (24) and a light guide cable (20) pass out, and an image entry window (18) and a light exit window (19), which are arranged with parallel radiation directions at a distance from the windows (8, 10) in the end housing (7) and the end housing (7). The camera housing (15) is constructed with a rotationally fixedly lockable coupling device (7, 16, 25, 26, 19) for coupling the windows (8, 19; 10, 18) to one another in a centering manner. The the coupling device has a cylinder (7) on one of the housings and a matching bore (16) on the other housing (15). The windows (8, 10; 19, 18) are arranged in the end wall (11) of the cylinder (7) and the base wall (17) of the bore (16).

For multi-spectral space remote sensing data in a visible light and near-infrared range, the invention provides a relative radiometric correction technology for automatically extracting pseudo-invariant feature points for a remote sensing image. The technology mainly comprises the following steps of: for a target image with a digital number (DN) value, searching a matched reference image with surface reflectivity; pre-processing the two images; by using a canonical correlation analysis technology, searching a canonical correlation point set; screening the pseudo-invariant feature points in the canonical correlation point set; and by using the pseudo-invariant feature points, fitting a linear relation, and by using the linear relation, performing linear relative radiometric correction processing on the target image. By adoption of an algorithm, the DN value of the target image is directly converted into the surface reflectivity. The algorithm has the characteristics of simple processing flow, high processing speed and stability, and manual interaction is not required; moreover, the algorithm can be used for relative radiometric correction of the same sensors or different sensors and is particularly applicable to radiometric processing of remote sensing data, wherein the auxiliary information of the remote sensing data is lost or calibration accuracy is low, and absolute radiometric correction is not suitable for the remote sensing data.

An improved vehicle suspension system providing for readily adjustable rearward weight transfer upon acceleration by permitting controlled upward motion of the mid-wheelbase portion of the vehicle and corresponding dynamic change in center of gravity height. The movement of the central portions of the vehicle in an upward direction is controlled and adjusted through a plurality of pivot points and links, together with variable resistance spring and damper means, to provide for optimum dynamic weight transfer onto driven wheels and superior acceleration characteristics under a variety of road surface, vehicle, and environmental conditions.

The invention discloses a pulverized fuel ash-cement foam material for controlling the spontaneous combustion of coal and a preparation method of the pulverized fuel ash-cement foam material. The pulverized fuel ash-cement foam material is prepared from the following components by weight: 10-40 % of sulfoaluminate superfine cement, 10-40 % of pulverized fuel ash, 0.5-0.9 % of carboxymethyl cellulose, 0.1-0.6 % of sodium fluoride, 0.2-0.6 % of melamine, 0.1-0.4 % of aluminum sulfate, 0.3-0.6 % of lauryl sodium sulfate, 0.4-0.6 % of sodium dodecyl benzene sulfonate, 0.5-0.8 % of saponin and the balance of water. The foam material is high in expansion rate of foam, long in stabilizing time, low in rate of water loss, good in plugging performance, and very suitable for extinguishment underground a coal mine. The pulverized fuel ash-cement foam material has the advantages of being low in cost, good in plugging performance, high in strength, simple to construct and the like.

The present invention discloses a microwave photonic broadband radar imaging chip, and belongs to the integrated microwave photonic technology field. According to the present invention, by a photonicIntegration technology, the emission end and the reception end of a microwave photonic broadband imaging radar are integrated in the same chip, the chip is integrated with the following photonic assemblies of a semiconductor laser, a first 1*2 optical coupler, a Mach-Zehnder modulator, an optical attenuator, an optical phase shifter, a 2*1 optical coupler, a second 1*2 optical coupler, an emissionend photoelectric detector, a phase modulator and a reception end photoelectric detector, and the photonic assemblies are connected via the optical waveguides. The present invention also discloses amicrowave photonic broadband radar imaging system. According to the present invention, a high-frequency broadband linear frequency modulation emission signal of the broadband imaging radar can be generated in the optical domain, and an echo can be demodulated to an intermediate frequency or a base band by utilizing a microwave photonic frequency mixing technology, so that the real-time processingof the high-resolution target imaging can be realized. The microwave photonic broadband radar imaging chip and the microwave photonic broadband radar imaging system of the present invention have theadvantages of being small in size, high in integration degree, good in stability and low in cost, etc.

A multi-phase mixed protonic / electronic conducting material comprising a proton-conducting ceramic phase and an electron conductive ceramic phase. Under the presence of a partial pressure gradient of hydrogen across the membrane, a membrane fabricated with this material selectively transports hydrogen ions through the protonically conductive ceramic phase and electrons through the electronically conducting ceramic phase, which results in ultrahigh purity hydrogen permeation through the membrane. The material has a high electronic conductivity and hydrogen gas transport is rate-limited by the protonic conductivity of the material.

The invention relates to a controller pointer positioning method based on a composite MEMS sensor and a controller, and relates to the technical field of wireless sensing control. The controller includes a USB receiver and a controller body; the controller body includes a singlechip, as well as an MEMS sensor, an RF circuit, an EEPROM and keys, which are connected with the singlechip; and the controller is characterized in that the MEMS sensor is a composite MEMS sensor and includes an acceleration sensor and a gyroscope, wherein the acceleration sensor is a triaxial acceleration sensor, the gyroscope is a biaxial gyroscope or a combination of two orthogonal homotaxial gyroscopes, the acceleration sensor and the gyroscope are connected with the singlechip through an A / D converter, the acceleration sensor is used for measuring the linear acceleration of the controller body, and the gyroscope is used for measuring the angular speed of the controller body. The invention solves the problems that a single MEMS sensor is incapable of omnibearing control at any angle, is not flexible to use, and is highly limited; the 360-dregree control is realized; the use is smooth and comfortable; and the operation becomes more freely and flexibly.

The invention discloses a charging management chip, which includes a charging control output module, a discharging control module, a battery voltage sampling input module, a fan driving output module, a buzzer output module, a dual-color LED control output module, a serial data output module. The control function of peripheral pins of the chip is programmable without being supported by peripheral controller, so that full automatization of the charging process detecting control can be realized. The invention needs lesser peripheral elements, and is easy for application design.

The present invention relates to oligonucleotides for detection of sepsis-causing bacteria and a detection method using the oligonucleotides, more particularly to a microarry comprising at least one of gram positive bacteria-specific and gram negative bacteria-specific oligonucleotides, sepsis-causing bacteria's genus-specific and species-specific oligonucleotides designed from the ITS target region which is hypervariable base sequence of sepsis-causing bacteria as probes, and a detection method and a diagnosis kit by using the same.According to the present invention, the present invention can provide an antibiotics therapy for accurately removing infectious agent related to sepsis by detecting existence of sepsis-causing bacteria and identifying gram positive- and gram negative-bacteria and genus and species of the bacteria, at once. And, the present invention can prevent a patient from abuse and misuse of antibiotics and decrease time of hospital treatment and medical cost of the patient. Further, the present invention has advantage of preventing complications and reducing mortality rate.

A videoendoscopic system (1) including an endoscope optical system (2) and a camera portion (3), the endoscope optical system (2) having an elongated shaft (4) through which an optical image guide (5) and a fiber light guide (6) pass, and an end housing (7), which is proximally connected to the shaft (4) and has an image exit window (10) and a light entry window (8) with radiation directions that are parallel to one another and to the axis of the shaft (4). The camera portion (3) includes a camera housing (15), from which an image signal cable (24) and a light guide cable (20) pass out, and an image entry window (18) and a light exit window (19), which are arranged with parallel radiation directions at a distance from the windows (8, 10) in the end housing (7) and the end housing (7). The camera housing (15) is constructed with a rotationally fixedly lockable coupling device (7, 16, 25, 26, 19) for coupling the windows (8, 19; 10, 18) to one another in a centering manner. The the coupling device has a cylinder (7) on one of the housings and a matching bore (16) on the other housing (15). The windows (8, 10; 19, 18) are arranged in the end wall (11) of the cylinder (7) and the base wall (17) of the bore (16).

A highly polarizable high dielectric constant positioning and motion control of the elements (approximately planar mirrors) of a Fresnel reflector solar concentrator tracking heliostat array wherein the elements are suspended with the center of mass above the swivel point, below the swivel point, or have an internal-swivel. The torque to produce angular deflection, and rotational motion is provided by induced and / or permanent dipole coupling to an electronic grid. The force interaction is greatly enhanced by securing a high dielectric material adjacent to each mirror. Thus forces and torques are produced without the use of motors. This allows maximization of solar energy focused by a low-profile concentrator array onto a receiver. Dynamic motion can be controlled over a wide range of dimensions from nanometers to decimeters.

The invention discloses a heterodyne full-coherent-terahertz three-dimensional high-resolution imaging system and a method. The system comprises a reception-and-transmission-shared lens antenna, a terahertz linear frequency modulation wave emission module, a terahertz linear frequency modulation wave reception module, an X-Y two-dimensional scanning platform, a signal full-coherent module, a data acquiring and processing module, an image processing module and an image display unit. The system and the method of the invention are provided with a frequency on the terahertz frequency band. The overall system adopts a heterodyne full-coherent design, and a single antenna is adopted. Therefore, the structure of the system is simple and occupies less space. The planar and depth imaging resolution is high in millimeters; and the system frequency and the power stability are both advantageous.

The invention discloses a microwave frequency measurement chip as well as an applying method and a preparing method thereof. The microwave frequency measurement chip comprises an optical grating coupler, a phase modulator, a filter based on a micro-ring resonant cavity and a bus waveguide. An optical signal is coupled by a coupling optical grating and enters the chip, an optical carrier signal is transmitted in the bus waveguide and first passes the phase modulator, the optical carrier signal is modulated by an unknown microwave signal to be measured through an intensity modulator, the modulated signal enters the micro-ring resonant cavity through the bus waveguide, two paths of optical power are respectively output at the upper and lower speech path ends of the filter, and the unknown microwave signal can be determined through calculating the specific value of the measured optical power. The microwave frequency measurement chip realizing the detection of the unknown microwave signal by a silicon-based photonic integrated chip has the advantages of small chip size, light weight, high integration, low cost and electromagnetic interference resistance. Meanwhile, the invention further discloses an applying method and a preparing method of the chip.

The invention discloses a wireless sensor network non-uniform clustering routing method based on energy optimization. The method is mainly divided into two stages: a cluster initial establishment stage and a cluster stable transmission stage. The cluster initial establishment stage mainly solves the problems of cluster head election, cluster radius calculation and cluster formation. The cluster stable transmission stage comprises pheromone initialization, cluster head node adjacency list updating, transition probability formula improvement and pheromone updating, and a next hop cluster head node is effectively selected and a global optimal inter-cluster route is established based on a chaotic ant colony optimization algorithm. According to the invention, the network service life and the node energy efficiency are obviously improved.

A multi-phase mixed protonic / electronic conducting material comprising a proton-conducting ceramic phase and an electron conductive ceramic phase. Under the presence of a partial pressure gradient of hydrogen across the membrane, a membrane fabricated with this material selectively transports hydrogen ions through the protonically conductive ceramic phase and electrons through the electronically conducting ceramic phase, which results in ultrahigh purity hydrogen permeation through the membrane. The material has a high electronic conductivity and hydrogen gas transport is rate-limited by the protonic conductivity of the material.

The invention relates to an experimental bed capable of automatically controlling system mechanical properties. The experimental bed comprises a mattress and a bedstead, wherein the mattress consists of a bed core, a fabric composite layer (11), a latex foam bedding layer (12) and a spring substrate plate (15), and the bed core consists of evenly arranged independent bagged springs (13); the bagged springs (13) are independently and fixedly arranged on the spring substrate plate (15) and are provided with linear displacement transducers (14), and the mattress is provided with an adjustable comfort region (8) capable of detecting the morphological changes in human spine; the spring substrate plate consists of a plurality of independent small substrate plates, and each small substrate plate is used for supporting two horizontal rows of independent bagged springs (13); and a linear permanent magnet reciprocating motor (21) is respectively arranged under each small substrate plate. The bagged spring compression amount information collected by an information collector is transmitted to a data processor to obtain the human-bed interface indentation amount. The quantitative research on the human-bed interface shape and pressure in real sleeping and natural prone position states is realized.

The invention belongs to the field of antibodies and particularly relates to an anti-human PCSK9 monoclonal antibody and application of the antibody in preparation of drugs for reducing lipoprotein level in blood and preventing or treating cardiovascular diseases or disorders and thrombosis-obstructive diseases or disorders. The anti-human PCSK9 monoclonal antibody has higher affinity and a good application prospect.

The invention relates to a fractional frequency transmission wind power generation system and method based on an isolation type variable frequency transformer. The isolation type variable frequency transformer is of concentrated variable frequency of a wind power plant, and variable speed operation and maximum power tracking of a whole wind power generation set are realized, so that a frequency converter does not need to be configured for each single wind power generation set, the technology is applied to wind power generation, the system can be simplified greatly, the reliability is improved,only small converter capacity is needed, the system has the advantages of fractional frequency transmission in the aspect of long-distance power transmission, and the system is particularly applicable for offshore wind power with far offshore distance. The invention discloses a novel wind power system scheme, a starting method under the system scheme, and a maximum power tracking control method.Compared with the prior art, the system has the advantages of low cost, high reliability, high stability, few harmonic waves inside a wind power plant and the like.

The invention provides a method for preparing recombinant human insulin crystal, and belongs to the technical field of protein crystallization. According to the method, zinc ions are subjected to three times of crystallization, the obtained insulin crystal is large in particle size and good in homogeneity, phenols or organic solvents used in normal methods are not used in the method, so that residues of harmful substances in the product are avoided and the quality of the insulin crystal is improved; moreover, the method is stable in preparation process and beneficial to industrial production.

The invention belongs to the technical field of analytical chemistry, and in particular relates to a double-integration partial least square modeling method based on Monte Carlo and LASSO. The double-integration partial least square modeling method disclosed by the invention comprises the following steps of: firstly, selecting a certain number of samples as a sample sub-set by adopting a Monte Carlo technology, then, selecting a part of variables as a sample variable sub-set from the sample sub-set by adopting a LASSO technology, repeating for many times, establishing multiple sub-models, and directly averaging prediction results of the models so as to obtain a final prediction result. By means of the method, the prediction capability of the models can be effectively improved; the prediction precision of the models can be increased; and the double-integration partial least square modeling method has the obvious advantages in the aspects of the prediction precision and the stability. The double-integration partial least square modeling method disclosed by the invention is suitable for quantitative analysis of complex samples, such as petroleum, tobacco, foods and traditional Chinese medicines.

The invention discloses a preparation method of proton exchange membrane fuel cell catalyst layer slurry, the catalyst slurry components include a catalyst, a conductive polymer and a solvent, the catalyst slurry viscosity is 100-1000 mPa.s, and the solid content is 10 to 50 wt%. By controlling the final viscosity and the solid content of the slurry, the slurry form and catalyst layer preparation efficiency and effect can be ensured. A catalytic layer electrode prepared from the slurry can be used for assembly of a proton exchange membrane fuel cell membrane electrode (MEA Membrane Electrode Assemble) and the pore size distribution is more conducive to the gas-liquid mass transfer, and is conducive to the improvement of the performance and stability of the battery in a high current density range.

The present invention provides compositions and methods for immunotherapy, which include shelf-stable pharmaceutical compositions for inducing antigen-specific T cells. Such compositions are employed as components of an artificial antigen presenting cell (aAPC), to provide a patient with complexes for presentation of an antigen (e.g., a tumor antigen) and / or a T cell co-stimulatory molecule.

The invention relates to a polymer electrolyte, especially relates to a micropore polymer electrolyte skeletal material prepared by a coaxial electrospinning technology and a method for preparing a gel polymer electrolyte from the skeletal material, and belongs to the field of polymer lithium ion batteries. The preparation method comprises the following steps of 1, preparing core and shell layer electrostatic spinning solutions, 2, preparing a core / shell structure nanometer fiber film by a coaxial electrospinning technology, 3, drying and cutting the nanometer fiber film, and carrying out lamination to obtain a polymer gel electrolyte skeleton, and 4, putting the skeleton into an electrolyte in a glove box and carrying out activation and gelation. The electrolyte skeleton has ultra-strong electrolyte adsorptivity and retentivity. The prepared gel polymer electrolyte has high ion conductivity, a stable electrochemical window, good charging and discharging performances and good interface compatibility with a lithium electrode, satisfies common button cell assembling requirements and can be used for preparation of a secondary lithium ion battery.

The invention relates to an efficient and stable perovskite solar cell prepared by dissolving lead halide PbX2 (X = Cl, Br, I), lead acetate, lead sulfate and the like based on novel ionic liquid methylamine formate as well as a preparation method and application of the perovskite solar cell, and belongs to the field of optoelectronic materials and devices. The preparation method comprises the following steps: dissolving PbI2 into a methylamine formate solvent according to the concentration of 1-1.5 M, spin-coating PbI2 on an ITO substrate deposited with SnO2 by using a heating spin-coating method, annealing to form a compact, uniform and stable PbI2 film, spin-coating a cation solution on the PbI2 film, annealing to form stable formamidine lead iodine perovskite, and completely operatingthe whole process in air. And then spin-coating a Spiro-OMeTAD hole transport layer on the thin film, and evaporating a modification layer MoO3 and a metal electrode by using a vacuum evaporation technology to complete the preparation of the device.

A flow plate for use as an anode current collector in an electrolytic cell for the production of hydrogen from water is provided. The flow plate comprises a channel plate and a cover plate. A front face of the channel plate is provided with a flow field pattern of open-faced channels defined by depressed portions alternating with elevated portions. The cover plate made of a material that is corrosion resistant in an anodic environment of water electrolysis. The cover plate is arranged parallel on top of the channel plate and in electrical contact with the front face thereof. The cover plate is further provided with a pattern of through-going apertures alternating with closed portions, and the closed portions cover at least the elevated portions of the channel plate.