32results about How to "Low frequency" patented technology

Methods and systems for facilitating efficient travel management are disclosed. Exemplary embodiments comprise a processor configured to make selections from among a plurality of vehicle travel modes based on a vehicle travel mode selection rule using, at least in part, received travel plan information. In a preferred embodiment, this selection can be based on any of a number of factors, including monetary costs and carbon emissions associated with different vehicle travel mode options.

The probe tip movement control method of the scanning probe microscope is used for a scanning probe microscope provided with a cantilever 21 having a probe tip 20 facing a sample 12. The atomic force occurring between the probe tip and sample is measured when the probe tip scans the surface of the sample. X-, Y-, and Z-fine movement mechanisms 23, 29, and 30 are used to relatively change the positions of the probe tip and sample. It is possible to maintain a high measurement accuracy and enable scan movement of a probe tip on a sample surface by simple control when measuring a part having a gradient in measurement of an uneven shape on a sample surface.

In multiprocessor systems the task of holding power dissipation to its lowest possible level is challenging. This invention permits reduced power dissipation by optionally independently clocking selected central processing units at lower frequencies if they are not fully loaded. The variable clocking system enables synchronization between central processing units operating a differing frequencies and shared memory and peripherals. This allows for significant power reduction in the frequently occurring scenario where all processors are not driven to their limits by prevailing system requirements.

The present invention is directed to a sigma-delta digital to analog converted (DAC) including a digital-sigma delta modulator, a decimation filter, and a multi-bit DAC. The digital sigma-delta modulator receives a digital input signal and produces a quantized digital signal therefrom. The decimation filter receives the quantized digital signal and produces a decimated digital signal therefrom. The multi-bit DAC receives the decimated digital signal and produces an analog output signal therefrom. The analog output signal is representative of the digital input signal.

An image processing system utilizes an image type classification circuit to identify inputted image data as picture image data or text/graphics image data. A halftone circuit, operatively connected to the image type classification circuit, converts the inputted image data, identified as picture image data, to halftone image data. Moreover, a tile pattern circuit, operatively connected to the image type classification circuit, to replace the inputted image data, identified as text/graphics image data, with tile patterns. Non-halftone cluster areas in the tile patterns are encoded with a predetermined pattern. A bitmap rendering circuit combines the halftone image data with the encoded tile patterns to render a bitmap, wherein the bitmap can be used by a print engine to reproduce the image.

A zipper for a reclosable bag including an elongated groove profile having two arms which form a general U-shape to define an opening to a channel, and an elongated rib profile opposing the groove profile, wherein a plurality of first segments of the rib profile alternate with a plurality of second segments of the rib profile to create a structural discontinuity along a length thereof, wherein during interlocking the groove and rib profiles, an audible clicking sound of at least 50 dB on average is created during opening and closing.

A thin film transistor substrate includes a first thin film transistor disposed having a polycrystalline semiconductor layer, a first gate electrode on the polycrystalline semiconductor layer, a first source electrode and a first drain electrode; a first gate insulating layer between the polycrystalline semiconductor layer and the first gate electrode; a second thin film transistor disposed having an oxide semiconductor layer on the first gate electrode, a second gate electrode on the oxide semiconductor layer, a second source electrode and a second drain electrode; an intermediate insulating layer disposed on the first gate electrode and under the oxide semiconductor layer; and a second gate insulating layer on the intermediate insulating layer and under the first source electrode, the first drain electrode and the second gate electrode.

Method of conditionally controlling the survivability of a recombinant cell population and of containing such cells to an environment or containing replicons to a host cell is based on the use of proteic killer systems including the E. coli relBE locus and similar systems found in Gram-negative and Gram-positive bacteria and Archae. Such system are generally based on a cytotoxin polypeptide and an antitoxin or antidote polypeptide that in contrast to the cytotoxin is degradable by proteases. The recombinant cells are useful as vaccines, pollulant degrading organisms or as biogical pest control organisms e.g. expressing B. thuringiensis crystalline proteins.

Ultrasound tomography arrays and vortex shedding devices are provided which measure average flow velocity through Doppler shift of the fluid as well as cross sectional multiphase fluid composition in pipe or tubing conduits. Multiple tomographic arrays in conjunction with correlation of sensed flow patterns in time provided determination of flow velocity as well as cross sectional multiphase fluid composition. The tomographic arrays may be arranged in a skewed or slanted plane to measure velocity fluctuations downstream of a vortex shedding device where the period and amplitude of the fluctuations is correlated with the mass flow of the fluid. Additionally, the tomographic arrays provide the relative composition of the multiphase fluid. The multiple arrays together with correlation to determine velocity fluctuations downstream of a vortex shedding device where the period and amplitude of the fluctuations is correlated with the mass flow of the fluid. Additionally the tomographic arrays output the relative composition of the multiphase fluid.

A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator signal, which has a frequency that is an integer multiple of the channel spacing or one-half of a channel spacing displaced from an integer multiple of the channel spacing. The local oscillator signal is selected to frequency translate the signal of interest to within a near-baseband passband whose lower edge is spaced from DC by at least about the maximum bandwidth of the signal of interest. Problems associated with 1/f noise, DC offsets, and self-mixing products are avoided or substantially diminished. Other methods and systems are also disclosed.

An object is to provide a TCR closing system that enables not only bias-free analysis of TCR repertoires, but also collection of antigen-specific TCR α/β cDNA pairs and evaluation of functions thereof. There is provided a method for producing a gene of T cell receptor (TCR) specific to an antigen A, which comprises 1) the step of stimulating a group of T cells including a T cell specific to an antigen A or one T cell specific to an antigen A under a condition effective for amplification of a TCR gene; 2) the step of identifying a T cell specific to an antigen A among the group of T cells including a T cell specific to the antigen A, and sorting one T cell specific to the antigen A into a vessel; and 3) the step of subjecting the one activated T cell specific to the antigen A in the vessel to PCR to amplify a gene of TCR specific to the antigen A. According to the present invention, a target TCR gene can be cloned within a shorter time compared with that repaired by the conventional methods, for example, about ten days. Further, according to the present invention, genes of TCR α chain and β chain can be highly efficiently cloned. Under the conditions of the examples, a pair of a TCR α chain and TCR β chain could be obtained from stimulated T cells sorted as single cells at a ratio of 100%.

Methods and apparatuses for determining a value of a property of a material that flows in a conduit inside a microwave cavity are described. Such apparatus may include: a multi-mode microwave cavity having the conduit in it; a plurality of feeds, each configured to feed the cavity with RF radiation to excite multiple modes in the cavity; a detector, configured to detect parameters indicative of electrical response of the cavity to RF radiation fed to the cavity; and a processor, configured to determine the value of the property based on the parameters detected by the detector. In some embodiments, at least one of the feeds comprises a radiating element outside the cavity and a waveguide configured to guide waves from the radiating element to the cavity.

Disclosed is a delay locked loop (DLL) circuit. The DLL circuit detects a frequency of an external clock signal and adjusts a coarse delay during a DLL circuit operation, thereby quickly terminating a feedback operation of the DLL circuit and having a reduced circuit area of a delay line. Therefore, the DLL circuit can be used for next generation high-integration and high-frequency memory devices such as DDR2 SDRAMs.

The invention discloses a broadband active inductor with high Q values and a coarsely tunable and finely tunable inductance value. The broadband active inductor comprises a first transconductance unit (1), a modulation unit (2), a second transconductance unit (3), a third transconductance unit (4), a fourth transconductance unit (5), a first tunable bias circuit (6), a second tunable bias circuit (7), a third tunable bias circuit (8) and a fourth tunable bias circuit (9). The modulation unit is connected with the first transconductance unit and is used for increasing the Q values and bandwidth of the active inductor. The first transconductance unit, the modulation unit and the second transconductance unit form a master circuit. The third transconductance unit and the fourth transconductance unit form a slave circuit. The master circuit and the slave circuit are connected in parallel. The equivalent capacitance for synthesizing the inductance in the whole circuit is increased, so the inductance value of the active inductor is improved. According to the active inductor, the high Q peaks of the active inductor under different frequencies are realized, the Q peaks can be tuned, and the inductance value of the active inductor is coarsely tuned and finely tuned.

A method for searching wireless signal, a mobile electronic device using the same, and a non-transitory storage medium are provided. In the method, after a motion sensor of the mobile electronic device is activated, a motion status of the mobile electronic device is determined by using the motion sensor. Then, a frequency of the mobile electronic device performing a wireless signal searching procedure is adjusted according to the motion status, so as to reduce power wasted due to the unnecessary wireless signal searching procedure being performed.

A multi-port projector of acoustic energy in water includes a cylindrical hollow transducer having open annular ends. A thin, flexible member is secured to each annular end to extend across each opening to be displaced by the transducer, and the transducer and flexible members form an interior sealed from ambient water. A battery/electronics module is in the interior and is spaced from the transducer and flexible members to couple driving signals to the transducer for reciprocally displacing it and the flexible members in response to the driving signals. An inert liquid fills the interior around the module, and an open truss on each annular end exposes the flexible members to the ambient water. Cylindrical portions coaxially extending with the transducer on a common longitudinal axis are connected to the open trusses for projecting acoustic energy of lower frequency than conventional cylindrical transducers of similar size.

A self-resetting frictional energy-dissipating support based on a shape memory alloy, comprising a first channel steel (1) and a second channel steel (2), the outer ends of the first channel steel (1) and the second channel steel (2) are respectively A round pipe (7) and a connecting plate (8) are connected in sequence; the opening of the first channel steel (1) is downward, and the opening of the second channel steel (2) is upward, and the two press the contact surface through the connecting piece (4) to provide Friction force; the left and right sides of the flange of the first channel steel (1) are respectively provided with four first bolts (5) equidistantly distributed, and the left and right sides of the flange of the second channel steel (2) are respectively provided with four second bolts ( 5‑1), the second bolts (5‑1) are symmetrically arranged in pairs relative to the central axis of the second channel steel (2); the shape memory is used between the first bolts (5) and the corresponding second bolts (5‑1) Alloy wires (3) are connected. The invention has simple structure, stable energy consumption performance, almost no residual deformation after unloading, and is easy to replace.

A variable filter circuit (10) includes a parallel arm (11) connected between a port (P3) and node (A), a series arm (12) including a resonator (Re_s1) connected in series between a port (P1) and node (A), and a series arm (13) including a resonator (Re_s2) connected in series between a port (P2) and node (A). The parallel arm (11) includes a first inductor (Lp1). The series arms (12, 13) include variable capacitors (Cp_s1, Cp_s2) connected in parallel to the resonators (Re_s1, Re_s2).

The invention discloses a VSG control method based on a dynamic droop coefficient. Based on a synchronous inverter scheme, by analyzing the steady-state and dynamic characteristics of a VSG and selecting an active frequency droop coefficient and a reactive voltage droop coefficient as adjustment objects, a VSG control method based on dynamic droop coefficient adjustment is designed to make the droop coefficient of the VSG adaptively vary with a cosine function in the event of load fluctuations in an off-grid operation mode. The VSG control method achieves a small frequency and voltage variation range and short response time, thereby ensuring system stability.

The communication process for high-sensitivity and synchronous demodulation signals between a transmitter (2) and a receiver (3) comprises a first synchronisation phase followed by a modulation and demodulation phase of the data. To achieve this, the transmitter transmits a pseudo-periodic chirp signal to the receiver, where a frequency conversion of the chirp signal is performed in a mixer (33) by an oscillating signal (So) at constant frequency of a local oscillator (34) to supply an intermediate signal, which is filtered and sampled for a logic unit (37). An assembly (38) of m pairs DFT blocks phase-shifted in relation to one another and operating in parallel is provided in the logic unit. A processing unit (39) receives the result of the pairs of the assembly to determine frequency and phase errors between the transmitter and the receiver on the basis of two peaks detected by one of the pairs above a threshold to synchronise the receiver.

The invention discloses a micro-grid coordination control device based on particle swarm self-optimization PID droop control. The device comprises a photovoltaic power generation droop control selection module, a wind power generation droop control selection module, a storage battery droop control selection module, a fuel cell droop control selection module, a photovoltaic power generation PSO self-optimizing PID droop control module, a photovoltaic power generation constant power control module, a wind power generation PSO self-optimization PID droop control module, a wind power generation constant power control module, a storage battery PSO self-optimization PID droop control module, a fuel cell PSO self-optimization PID droop control module and a storage battery charging control module.Each PSO self-optimizing PID droop control module internally comprises a frequency PID droop controller and a voltage PID droop controller. The micro-grid coordination control device realizes automatic conversion of each distributed power supply as a master power supply and a slave power supply, and effectively stabilizes voltage and frequency fluctuation of the micro-grid.

The present invention relates to a device for coupling between a plasma column serving as an antenna and an electric power signal generator, associated with a laser. This device comprises at least two conducting electrodes, each pierced with a hole, these holes being coaxial, the electrodes being connected on the one hand to a high voltage direct current source and on the other hand to power signal alternating current source, the laser(s) being placed do that its (their) beam arrives along the axis of said holes of the electrodes.

A stepping motor is provided with a rotor having with a rotor shaft A permanent magnet is attached to an outer peripheral side of the rotor shaft and a stator having pole teeth faces the permanent magnet in a radial direction. The stepping motor is characterized in that the rotor shaft is formed of aluminum or aluminum alloy.

The invention discloses a quick detecting method for a harmonic wave of an electric power system, and particularly relates to a method for detecting phase and amplitude of signals with different frequencies in the electric power system. The method comprises the following steps of (1), acquiring sampling points of which the number is at least two times of that of the harmonic waves through using two times of highest multiplied frequency as a sampling rate; (2), constructing a sine signal and a cosine signal which correspond with each harmonic wave frequency; (3), calculating a harmonic wave detecting parameter through fitting the coefficient before each sine item and cosine item; and (4), combining the coefficients in front of the sine item and the cosine item with the same frequency for obtaining the amplitude and the phase of the harmonic wave with each frequency. Compared with the prior art, the quick detecting method is advantageous in that a small volume of data are required; a result can be calculated just through the data with length of one half of that of a fundamental frequency signal; relative to an FFT (fast Fourier transform) method, a problem of frequency leakage can be prevented; and the method is compatible with clutter interference to a certain extent.

The invention discloses an ultrahigh-frequency metal RFID (radio frequency identification) signboard, which sequentially comprises a metal signboard, a first double-faced adhesive tape layer, an antenna grounding layer, a second double-faced adhesive tape layer, an insulating medium layer, a third double-faced adhesive tape layer, an antenna chip layer and a fourth double-faced adhesive tape layer from top to bottom, and is characterized in that the metal signboard is adhered to the antenna grounding layer through the first double-faced adhesive tape layer; the antenna grounding layer and the antenna chip layer are separated by filling an insulating medium layer, the antenna chip layer is adhered to a managed object through a fourth double-faced adhesive tape layer, the microstrip antenna is characterized in that the antenna grounding layer and the antenna chip layer are conducted through a side face conduction layer to form a microstrip antenna structure, a chip is arranged at the bottom of the microstrip antenna structure, and the antenna grounding layer and the antenna chip layer are connected through a second double-faced adhesive tape layer. And the metal signboard is conducted with the antenna grounding layer at the upper part of the microstrip antenna structure. By means of the mode, holes or excitation holes do not need to be formed, the integrity of the metal layer is guaranteed, and meanwhile the impact resistance of the metal layer is greatly improved.

The invention discloses a radio frequency front-end control circuit, a control method thereof, a radio frequency front-end control chip, a system, a storage medium and a terminal. The radio frequencyfront-end control circuit comprises a plurality of driving devices connected in parallel and used for accessing a driving control signal, wherein the output ends of the driving devices output radio frequency control signals, and the radio frequency control signals are used for controlling a radio frequency front end; and a plurality of delay elements which are respectively coupled with the controlend of each driving device, wherein a driving control signal is input to the control end of each driving device through the delay element coupled with the driving device, and the delay time lengths of the delay elements coupled with the control ends of the plurality of driving devices are sequentially increased. According to the technical scheme of the invention, the EMI of the RF device can be reduced more effectively.

A method for obtaining a prognosis for a subject having rheumatoid arthritis by measuring the levels of anti-PAD2 antibodies is described. Methods of using anti-PAD2 antibodies to treat rheumatoid arthritis are also described.

A system for semiconductor wafer testing, a tangent probe card and a probe head assembly thereof. The system has a tangent probe card and a tester. Testing ends of the probe card are flat, hence the allowable alignment budget will always be more generous for the tangent probe card. The probes are held on the probe head assembly, and once the alignment is achieved accurately during manufacture, the alignment will remain stable throughout the whole life cycle. The probe has a greater CCC due to its larger cross section. The throughput of the tangent probes is higher than that of the conventional probe card since there is no need to move the pointed pin/structure. No pointed pin/structure needs to be repaired, and the flat bottom surface of the probe head assembly is easier to clean and maintain.

The invention provides a buffering device. The buffering device comprises a shell, a plurality of buffering pipes, an elastic part, a supporting piece and an elastic supporting part; a plurality of similar annular grooves are formed in the hole walls of the buffering pipes, and a plurality of gaps formed in the axial directions of the buffering pipes are formed in the buffering pipes; the elastic part is arranged in the accommodating cavity; a plurality of ring-like bulges are arranged on the outer wall surface of each supporting column; the elastic supporting part is arranged in a connecting hole and located between the shell and the supporting columns; each supporting column comprises a connecting section, a protruding section and a supporting tail section which are sequentially connected; and the lengths of the supporting tail sections of the multiple supporting columns are at least two. According to the buffering device, due to the fact that the lengths of the supporting tail sections in the supporting columns are different, the protruding sections on the different supporting columns have phase differences; the resistances borne by the different supporting columns are different; therefore the load-displacement curve of the structure is changed through the combination of the different supporting columns; and the specific damping coefficient of the buffer device is greatly improved to enhance the buffering performance of the structure.

The present invention relates to a low-dosed dosage form for hormone replacement therapy (HRT). More particularly, the present invention concerns a solid oral dosage form comprising about 0.5 mg estradiol and about 0.5 mg drospirenone, and at least one pharmaceutically acceptable excipient. Despite the low E2 and DRSP doses it has surprisingly been found that a very high proportion of the women suffering from moderate to severe hot flushes actually respond to this treatment. Accordingly, the dosage form of the invention may be used as maintenance HRT or may be used already when HRT is initiated.