46results about How to "Avoid excitation" patented technology

Devices, systems and methods are disclosed for treating or preventing dementia, such as Alzheimer's disease. The methods comprise transmitting impulses of energy non-invasively to selected nerve fibers, particularly those in a vagus nerve, that modulate the activity of a patient's locus ceruleus. The transmitted energy impulses, comprising magnetic and / or electrical energy, stimulate the selected nerve fibers to cause the locus ceruleus to release norepinephrine into regions of the brain that contain beta-amyloids. The norepinephrine counteracts neuroinflammation that would damage neurons in those regions and the locus ceruleus, thereby arresting or slowing the progression of the disease in the patient.

The invention relates to a model reference self-adaptive sliding mode control method for a vertical takeoff and landing reusable launch vehicle, and belongs to the technical field of aircraft control.A self-adaptive sliding mode reaching law with fixed convergence characteristics and a second-order fixed-time convergence extension state observer are introduced into the design of a model referenceself-adaptive sliding mode controller, the capability of a system for suppressing complex external interference is improved accordingly, and meanwhile the precision and tracking speed of model tracking are increased.

A semiconductor imaging device, comprising: a photodetection region formed of a diffusion region of a first conductivity type and formed in an active region of a silicon substrate on a first side of a gate electrode so that its top is in contact with the silicon substrate and the inner edge portion invades under the channel region directly below the gate electrode; a shielding layer formed of a diffusion region of the second conductivity type and on the surface of the silicon substrate on the first side of the gate electrode, thereby The inner edge portion thereof is aligned with the side wall surface of the gate electrode on the first side; a floating diffusion region is formed in the active region on the second side of the gate electrode; and a channel region is formed on the second side of the gate electrode. directly below the gate electrode, wherein the channel region includes: a first channel region portion formed adjacent to the shielding layer; and a second channel region portion formed adjacent to the floating diffusion region, wherein the second The channel region portion contains impurity elements at a concentration level lower than that of the first channel region portion.

The invention discloses a high-power optical fiber laser. The laser structurally comprises a residual light collector, a red light / signal light beam combiner, a red light laser, a reverse cladding light mode stripper, a forward pumping pump source module, a forward pumping / signal beam combiner, a high-reflection grating, doped optical fiber, a low-reflection output grating, a reverse pumping / signal beam combiner, a reverse pumping pump source module, a forward cladding light stripper, and output optical fiber with an antireflection film end cap. Based on a linear fabry-perot resonance cavity structure, the forward pumping pump source module and the reverse pumping pump source module, with different wavelengths, provided with narrow-band protection filters are adopted, the forward pumping / signal beam combiner and the reverse pumping / signal beam combiner pump doped optical fiber from the front end and the back end of the doped optical fiber through the high-reflection grating and the low-reflection output grating at the same time, so that multi-kilowatt-class power stable output of the optical fiber laser is achieved, and mutual damage of residual pumping light on two sides to a pumpsource chip is avoided.

The present invention relates to high-purity quantum dot-fullerene dimers with controllable linker length and the process of fabricating the same. More particularly, this invention relates to the design, synthesis, and application of high-purity quantum dot-fullerene dimers by applying a novel stepwise surface assembly procedure that ensures the formation of conjugates due to steric repulsion effects between the quantum dots.

The invention discloses a polarization-maintaining fiber grating two-dimensional vector vibration sensor. The sensor comprises a broadband light source, a polarization control unit, a sensing probe and an orthogonal polarization demodulation unit, wherein the polarization control unit comprises a polarizer and a polarization controller, the sensing probe comprises an optical fiber probe, the optical fiber probe comprises a polarization-maintaining fiber grating and a cladding-fiber core energy re-coupling structure and is used for sensing the environment vibration information, the optical fiber probe is written in polarization-maintaining fiber, the cladding-fiber core energy re-coupling structure is welded through a polarization-maintaining / single-mode fiber core axial aligning mode, the orthogonal polarization demodulation unit comprises a filter, a polarization beam splitter, two photoelectric detectors and an orthogonal polarization vector synthesizer, and the polarization control unit, the sensing probe and the orthogonal polarization demodulation unit are connected through an optical fiber circulator or a coupler. By the aid of the mechanism, the two-dimensional vibration direction identification based on the single-optical fiber grating can be achieved. The mechanism has the advantages of being high in flexibility, compact in structure, low in cost and easy for network deployment.

A pneumatic tire having good water discharge and anti-noise characteristics. The pneumatic tire has a tread (2) having a center longitudinal groove (3a), shoulder longitudinal grooves (3b) extending on both sides of the center longitudinal groove (3a), and intermediate land sections (4a) divided by the center longitudinal groove (3a) and the shoulder longitudinal grooves (3b). Each intermediate land section (4a) includes narrow grooves (5) extending from positions spaced to the inner side in the tire's axial direction from a shoulder longitudinal groove (3b), intermediate inclined grooves (6)each inclinedly extending from a narrow groove (5) toward the center longitudinal groove (3a) and terminating without being connected to the center longitudinal groove (3a), and connection grooves (7) interconnecting intermediate inclined grooves (6) adjacent each other in the tire's circumferential direction. The connection grooves (7) are inclined relative to the tire's circumferential direction in the same direction as the intermediate inclined grooves (6) and at a smaller angle than the intermediate inclined grooves (6).

In a method for operating a drive device of a hybrid vehicle, in particular a hybrid motor vehicle, having at least one internal combustion engine and at least one electric machine, the torques of the internal combustion engine and the electric machine are added. A torque / torque component which, with respect to a request, is not deliverable by the internal combustion engine because of the system-related inertia of the internal combustion engine, is compensated at least partially by a torque / torque component delivered by the electric machine.

The invention relates to a battery charging system for the hybrid vehicles, which enables the battery of the hybrid vehicle to be charged before travelling. A user-operated switch 30 is provided to enable an engine 20 to operate a generator 24 to charge a battery while the vehicle is parked.

The invention relates to a variable frequency motor for an electric vehicle and a connection method for conversion windings of the variable frequency motor. The variable frequency motor comprises six groups of stator coils U1, U2, V1, V2, W1 and W2, wherein an end head of the U1 is a connection terminal 1U; an end tail of the U1 is connected in series with the end head of the U2 to lead out a connection terminal 3U; the end tail of the U2 is a connection terminal 2U; the end head of the V1 is a connection terminal 1V; the end tail of the V1 is connected in series with the end head of the V2 to lead out a connection terminal 3V; the end tail of the V2 is a connection terminal 2V; the end head of the W1 is a connection terminal 1W; the end tail of the W1 is connected in series with the end head of the W2 to lead out a connection terminal 3W; the end tail of the W2 is a connection terminal 2W; when the variable frequency motor operates in a low frequency region, the stator coils are in star-like connection; when the variable frequency motor operates in a low-high transition region, the stator coils are in edge-extension triangular connection; and when the variable frequency motor operates in a high-frequency region, the stator coils are in triangular connection. By the invention, the phenomena of over-excitation in a low-frequency working condition and insufficient exertion in a high-frequency working condition are avoided.

A semiconductor laser light source (2) is equipped with an active layer (5) for emitting semiconductor laser light. A grating element comprises: a ridge-type optical waveguide (18) having an incident surface (11a) on which the semiconductor laser light is incident and an exit surface (11b) from which exit light having a desired wavelength goes out; a Bragg grating (12) consisting of recesses and protrusions formed in the ridge-type optical waveguide (18); an exit-side propagation portion (20) provided between the Bragg grating (12) and the exit surface (11b). A laser oscillation occurs in the region of wavelengths reflected by the Bragg grating. The optical waveguide width (Wm) at the Bragg grating (12) is different from the optical waveguide width (Wout) at the exit surface.

The invention discloses a turbocharger integral type bearing with a locating mechanism. The turbocharger integral type bearing with the locating mechanism comprises an integral type bearing body with an oil hole and the locating mechanism matched with the integral type bearing, wherein a shaft shoulder is arranged at the end, facing the locating mechanism, of the integral type bearing, and a notch is formed in the shaft shoulder; the locating mechanism comprises a locating pin matched with the notch, an anti-thrust press plate used for limiting the integral type bearing to move in the transverse direction and an oil sealing cover arranged outside the anti-thrust press plate. The turbocharger integral type bearing with the locating mechanism is simple in structure, the length of the rotor system is short, the mass is small, compared with a traditional turbocharger, the mechanism efficiency is improved by 3%-5% by average, and the low velocity section is improved by 8%-10%; the turbocharger integral type bearing with the locating mechanism is provided with an axial oil groove and capable of adjusting and balancing bearing oil feeding and returning flow, so that the stimulation of oil film whirl in the rotor system is restrained fundamentally, the vibration is controlled, the noise of the turbocharger is reduced, and the work stability is improved; meanwhile, the oil-bearing effect is achieved, under the condition of short oil insufficiency, the replenishing lubricating effect is achieved, it is guaranteed that the normal work state of the turbocharger is maintained, and the service life is prolonged.

The invention relates to a high-power rotary hinge based on waveguide distributors and an implementation method of the high-power rotary hinge and mainly aims to inhibit the excitation of a TE11 high-order mode. The high-power rotary hinge has the advantages that in order to increase the power capacity of the high-power rotary hinge, the size design of the inner and outer diameters of a coaxial line allows a TEM dominant mode and the TE11 high-order mode to be able to be transmitted in the coaxial line; the waveguide distributors are designed at the input end and the output end of the rotary hinge, a multi-order impedance conversion section and matching-regulating partition are designed to divide a transmission signal into two equal-amplitude in-phase signals, a rectangular waveguide TE10 mode is converted into the coaxial line TEM dominant line by designing a metal-ring-structure excitation device, the excitation of the TE11 high-order mode is inhibited, a choke device is designed between a conductor in the coaxial line and a metal ring structure, and a large through hole can be formed in the conductor in the coaxial line so as to penetrate a multichannel rotary hinge signal transmission cable to facilitate multichannel accumulation.

An exemplary system includes a first electric motor and a second electric motor, which are coupled mechanically to one another via a common string of the system. The string has a torsional natural oscillation at a natural frequency. A first oscillating torque acts on the string by the first electric motor and a second oscillating torque acts on the string by the second electric motor. The second electric motor is arranged with respect to the first electric motor such that the effect of the second oscillating torque on the string results in damping of the excitation of the natural oscillation owing to the first oscillating torque.

The invention provides peptides comprising a sequence homologous to a portion of the third constant domain of the epsilon heavy chain of IgE, covalently linked to either (1) a carrier protein, or (2) a helper T cell epitope, and optionally to other immunostimulatory sequences as well. The invention provides for the use of such peptides as immunogens to elicit the production in mammals of high titer polyclonal antibodies, which are specific to a target effector site on the epsilon heavy chain of IgE. The peptides are expected to be useful in pharmaceutical compositions, to provide an immunotherapy for IgE-mediated allergic diseases.

Disclosed is a pass band type acoustic wave filter capable of obtaining an excellent attenuation characteristic in attenuation bands, in which an IDT electrode having a meander structure is used as at least one of the input-side electrode and the output-side electrode, and the attenuation band is provided over / under the pass band. An electrode having a meander structure in which a plurality of IDT blocks are connected to each other in series between the input port or the output port and the ground port is arranged as the input-side IDT electrode and the output-side IDT electrode, and the electrode finger between the neighboring IDT blocks is removed, so as to suppress excitation of an undesired acoustic wave.

The invention relates to an inverted-ridge corrugated horn feed source antenna based on balanced feed. The inverted-ridge corrugated horn feed source antenna comprises a balanced feed structure, an axial corrugated groove, a conical horn wall, a cross inverted ridge, a circular truncated cone and a short circuit plate. The working bandwidth of the antenna is an octave, such as 2-4GHz, the beam width range is 50-70 degrees in the working bandwidth, and the antenna has a very low cross polarization level and can be applied to a test system probe, especially to a compact field feed source. The antenna has the advantages of wide frequency band, low return loss, wide wave beam, simple feed structure, easiness in processing and the like.

A method of monitoring a torque transmission system with a manually switchable gearbox in the power train of a motor vehicle involves the utilization of at least one sensor unit at the input side of the torque transmission system to ascertain relevant positions of the shift lever of the gearbox and the driving torque of the engine of the motor vehicle. The thus obtained shift lever signals are memorized, together with comparison signals which are obtained as a result of filtering of the shift lever signals, and various characteristics of such signals are recognized and identified to indicate the intention of the operator of the vehicle regarding the switching of the gearbox. The thus obtained switching intention signals are transmitted to a controlled clutch operating system.

The invention provides a quantum state encoding device, a quantum state encoding method and a quantum processor. The device comprises a quantum bit structure (1) and an encoding module (2). N potential wells are arranged in a phase space, a first potential well is the potential well with the lowest energy in the N potential wells, M quantum states exist in the first potential well, N is an integerlarger than 0, and M is an integer larger than 1. The encoding module uses the first quantum state and a second quantum state as logic bits for encoding, and the first quantum state and the second quantum state are two quantum states with the lowest energy in the M quantum states. Two quantum states with the lowest energy in a potential well with the lowest energy are used for encoding, the control speed is higher, the influence of magnetic flux noise is not likely to happen, the phase decoherence time is longer, control is easy, and multi-bit coupling is convenient to achieve.

The invention discloses a display screen, an electronic device and a manufacturing method of the display screen. The display screen comprises an organic light-emitting layer, a TFT circuit layer, a polarizer and an infrared sensor, wherein the TFT circuit layer is arranged below the organic light-emitting layer, and the TFT circuit layer is used for driving the organic light-emitting layer to emitlight to be displayed; the polarizer is arranged above the organic light-emitting layer; the infrared sensor is arranged above the polarizer, and is used for transmitting and / or receiving infrared light. The invention also discloses an electronic device and a manufacturing method of the display screen. According to the display screen, the electronic device and the manufacturing method of the display screen, the infrared sensor can be arranged on the polarizer under the condition of a full screen, so that the phenomenon of screen flicker caused by the fact that the infrared sensor is arrangedbelow the TFT circuit layer can be avoided.

The invention relates to a model reference self-adaptive sliding mode control method for a vertical takeoff and landing reusable launch vehicle, and belongs to the technical field of aircraft control.A self-adaptive sliding mode reaching law with fixed convergence characteristics and a second-order fixed-time convergence extension state observer are introduced into the design of a model referenceself-adaptive sliding mode controller, the capability of a system for suppressing complex external interference is improved accordingly, and meanwhile the precision and tracking speed of model tracking are increased.

A fan assembly includes a vibration damping system (12) to reduce induced vibrational energy generated as a result of fan motor (26) operation. The vibration damping system (12) includes a plurality of arms (100) and damping material (102). The vibration damping system arms extend between a fan motor and a shroud assembly disposed circumferentially outward from the fan motor housing. The damping material (102) is attached to an end of each of the vibration damping system arms (100) and connects each arm to the shroud assembly. The damping material (102) absorbs induced vibrational energy generated by fan motor operation.

A dynamic pore water pressure gauge calibration pressure chamber device of the present invention comprises a calibration pressure chamber body, an upper pressure chamber is arranged at the top of the calibration pressure chamber body, and a hollow gas distribution cavity is arranged inside the upper pressure chamber, corresponds to an upper port of the calibration pressure chamber body and is equipped with a plurality of air intake holes which are distributed in the gas distribution cavity evenly. The air intake holes are communicated with the interior of the calibration pressure chamber body, the upper pressure chamber is equipped with an air intake pipe communicated with the gas distribution cavity. A to-be-calibrated pore water pressure gauge in the calibration pressure chamber device does not swing greatly, thereby being able to improve the calibration accuracy of the pore water pressure gauge effectively, and effectively avoiding damaging the to-be-calibrated pore water pressure gauge. The present invention also relates to a dynamic pore water pressure gauge calibration method.

The invention relates to a traveling wave photoelectric detector integrated with polarization coupling processing. The traveling wave photoelectric detector at least comprises one component unit. Each component unit comprises a radio-frequency transmission line, optical detection units arranged at the two sides of the radio-frequency transmission line respectively, two passive optical waveguides, a pair of ends of which are mutually connected, and a passive two-dimensional grating arranged at the joint of the two passive optical waveguides, wherein the radio-frequency transmission line is connected with the output ends of the optical detection units; and the two passive optical waveguides are used for providing optical signals for the optical detection units arranged at the two sides of the radio-frequency transmission line.

The invention relates to composition for preventing and treating osteoporosis as well as a preparation method and an application of the composition. The composition is prepared from the following rawmaterials in parts by weight: 1-20 parts of propolis alcohol extract, 1-20 parts of bee pollen water extract, 10-70 parts of modified pectin powder and 1-20 parts of colla corii asini powder, whereinthe propolis alcohol extract is prepared from a propolis raw material in a 70%-75% ethanol solution by reflux extraction for 2-4 h under the heating condition at 70-75 DEG C and by freeze-drying and pulverizing; the bee pollen water extract is prepared from a bee pollen raw material in distilled water by extraction for 2-4 h under the heating condition at 80-95 DEG C and by freeze-drying and pulverizing; the modified pectin powder is obtained from a pectin raw material by alkaline hydrolysis or enzymolysis and has molecular weight of 2,000-30,000 and esterification degree of 5%-35%. Cell, animal and clinical experiments prove that the composition has very obvious effect of preventing and treating osteoporosis.

The invention provides an optical fiber femtosecond laser mode locking device based on a semiconductor saturable absorber mirror. The air gap between the semiconductor saturable absorber mirror in thefiber laser and the end face of the ferrule of the ferrule-type fiber connector is filled with the refractive index matching liquid, so that the problem that the operation of the laser is interfereddue to the fact that the air gap forms a sub-cavity is solved, and the mode locking stability of the fiber femtosecond laser is effectively improved.

The invention relates to an inverted ridge corrugated horn feed antenna based on balanced feeding, comprising a balanced feeding structure, an axial corrugated groove, a conical horn wall, a cross-shaped inverted ridge, a circular frustum, and a short circuit board; the working bandwidth of the invention is one Octave frequency, such as 2-4GHz, within the working bandwidth, the beam width ranges from 50° to 70°, and has a very low cross-polarization level, which can be applied to test system probes, especially in compact field feeds . The antenna has the advantages of wide frequency band, low return loss, wide beam, simple feeding structure, easy processing and the like.

A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, the tower structure of the wind turbine of a cementitious material. The method also includes printing, via the additive printing device, one or more additional airflow modifying features on an outer surface the tower structure of the wind turbine so as to reduce and / or prevent vortex shedding, excitation, and / or drag of the tower structure. Further, the method includes curing the cementitious material so as to form the tower structure.

The invention discloses a concrete terrace coloring agent and a preparation method thereof, and belongs to the technical field of coloring agents. The concrete terrace coloring agent comprises the following components, natural resin, methyl silicone resin, a high-polarity resin, a surfactant, a cosolvent, a coupling agent, an antioxidant, a wear-resistant agent, an anti-ultraviolet agent, a fluorocarbon penetrant, a stabilizer, glycerin, a modifier, ethanol and an inorganic pigment. An anti-ultraviolet agent and the antioxidant are added; the anti-ultraviolet agent can strongly and selectivelyabsorb high-energy ultraviolet rays; and in the form of energy conversion, the absorbed energy is released and consumed in the form of heat energy or harmless low-energy radiation, so that high-molecular polymer is prevented from being excited and photophysically and photochemically decomposed due to absorption of ultraviolet energy, and the antioxidant can prevent the concrete floor coloring agent from being oxidized, so that the existing concrete floor coloring agent is fundamentally improved, and the normal service life of the concrete floor coloring agent is prolonged.

The invention relates to a composition for preventing and treating osteoporosis and its preparation method and application. The composition is made of raw materials with the following proportions by weight: 1-20 parts of propolis ethanol extract and 1-20 parts of bee pollen aqueous extract. 20 parts, modified pectin powder 10-70 parts, donkey hide gelatin powder 1-20 parts. The propolis alcohol extract is obtained by refluxing the propolis raw material with 70%-75% ethanol solution under heating conditions of 70-75°C for 2-4 hours, freeze-drying and then crushing; the bee pollen aqueous extract is the bee pollen raw material It is obtained by leaching with distilled water for 2-4 hours under heating conditions of 80-95°C, freeze-drying and then crushing; the modified pectin powder is obtained by alkali hydrolysis or enzymatic hydrolysis of pectin raw materials with a molecular weight of 2000-30000, Modified pectin with an esterification degree of 5%-35%. Cell, animal and clinical experiments have confirmed that the composition of the present invention has a very significant effect in preventing and treating osteoporosis.