177results about How to "Desensitization" patented technology

This invention discloses a semiconductor power device disposed in a semiconductor substrate and the semiconductor substrate has a plurality of deep trenches. The deep trenches are filled with an epitaxial layer thus forming a top epitaxial layer covering areas above a top surface of the deep trenches covering over the semiconductor substrate. The semiconductor power device further includes a plurality of transistor cells disposed in the top epitaxial layer whereby a device performance of the semiconductor power device is dependent on a depth of the deep trenches and not dependent on a thickness of the top epitaxial layer. Each of the plurality of transistor cells includes a trench DMOS transistor cell having a trench gate opened through the top epitaxial layer and filled with a gate dielectric material.

Transmit power (e.g., maximum transmit power) may be defined based on the maximum received signal strength allowed by a receiver and a minimum coupling loss from a transmitting node to a receiver. Transmit power may be defined for an access node (e.g., a femto node) such that a corresponding outage created in a cell (e.g., a macro cell) is limited while still providing an acceptable level of coverage for access terminals associated with the access node. An access node may autonomously adjust its transmit power based on channel measurement and a defined coverage hole to mitigate interference. Transmit power may be defined based on channel quality. Transmit power may be defined based on a signal-to-noise ratio at an access terminal. The transmit power of neighboring access nodes also may be controlled by inter-access node signaling.

An apparatus and method to scan and collect data relative to the position of a moving object. The method includes the calibration, equations, and algorithm needed to compute the surface coordinates of an object. The preferred embodiment of the apparatus includes two light sources and four area array image sensors, one moving device, and one computing device. The device scans the object, generates data, computes the position, and provides a complete measure of the 3D surface coordinates of an object. The methodology includes calibration of a known pattern to the area array image sensor, equations to map the physical points to the image sensor, algorithms to determine a best estimate of the coordinates of occluded points, and techniques to merge the computed coordinates from different sections of the object.

Intrusion detection of one section only of a multimode fiber uses a light signal launched into the fiber at a location spaced from the source through a single mode fiber to establish a narrow spectral width, under-filled non-uniform mode field power distribution in the fiber. A small portion of the higher order signal modes at the a second location also spaced from the destination is sampled by a tap coupler and monitored for transient changes in the mode field power distribution which are characteristic of intrusion to activate an alarm. The active signal of a multimode optical fiber is monitored for both signal degradation and transient power disturbance patterns that could indicate fiber damage or physical intrusion. A translator can be provided in an existing optical fiber system in which the data signals are translated in wavelength and/or launch conditions to optimize the monitoring signals in an otherwise non-optimized system.

A current perpendicular to plane (CPP) differential giant magnetoresistive (GMR) sensor that is insensitive to stray longitudinal and transverse magnetic fields.

A heat treatment method for desensitizing a nickel-based alloy with respect to environmentally-assisted cracking, the alloy having the following composition in percentages by weight: C≦0.10%; Mn≦0.5%; Si≦0.5%; P≦0.015%; S≦0.015%; Ni≧40%; Cr=12%-40%; Co≦10%; Al≦5%; Mo=0.1%-15%; Ti≦5%; B≦0.01%; Cu≦5%; W=0.1%-15%; Nb=0-10%; Ta≦10%; the balance being Fe, and inevitable impurities that result from processing, characterized in that the alloy is held at 950° C.-1160° C. in an atmosphere of pure hydrogen or containing at least 100 ppm of hydrogen mixed with an inert gas. A part made of a nickel-based alloy having the composition and that has been subjected to the heat treatment.

A true random number generator comprises a ring oscillator which is triggered to start oscillating in a first mode of oscillation at an oscillation start time. The first mode of oscillation will eventually collapse to a second mode of oscillation dependent on thermal noise. A collapse time from the oscillation start time to the time at which the oscillator collapses to the second mode is measured, and this can be used to determine a random number. The TRNG can be synthesized entirely using standard digital techniques and is able to provide high randomness, good throughput and energy efficiency.

A highly sensitive trace gas sensor based on Cavity Ring-down Spectroscopy (CRDS) makes use of a high power, multi-mode Fabry-Perot (FP) semiconductor laser with a broad wavelength range to excite a large number of cavity modes and multiple molecular transitions, thereby reducing the detector's susceptibility to vibration and making it well suited for field deployment. The laser beam is aligned on-axis to the cavity, improving the signal-noise-ratio while maintaining its vibration insensitivity. The use of a FP semiconductor laser has the added advantages of being inexpensive, compact and insensitive to vibration. The technique is demonstrated using a laser with an output power of at least 200 mW, preferably over 1.0 Watt, (λ=400 nm) to measure low concentrations of Nitrogen Dioxide (NO₂) in zero air. For single-shot detection, 530 ppt sensitivity is demonstrated with a measurement time of 60 μs which allows for sensitive measurements with high temporal resolution.

The invention discloses an ammonia desulfurization optimization control method based on multivariable predictive control. Firstly, the overall ammonia desulfurization system is regarded as a two-in-two-out multivariable object, and the augmented state space model is obtained through identification; then, in combination of multivariable constrained predictive control and interval control, intake ammonia flows in an absorption section and an oxidation section of a desulfurization tower are controlled, and the SO2 concentration after desulfurization and the pH value of circulating slurry are guaranteed to be maintained in a given interval range. Through adopting the multivariable constrained predictive control method based on interval characteristics, the sensitivity to model errors is weakened, the robustness of the controller is enhanced, distribution of the intake ammonia flow in different reaction stages of the desulfurization tower can be better realized, coordination control demands are reduced on the premise of ensuring the desulfurization efficiency, the dynamic adjustment quality of the system is improved, the actuating frequency of an actuator is reduced, the ammonia consumption amount is reduced, and economic and environmental friendly operation of the desulfurization system is further promoted.

The invention discloses a phi-OTDR reinforcing method based on a polarized orthogonal optical pulse pair, wherein a polarized orthogonal optical pulse pair set is used as a detecting optical signal. After detecting light enters a sensing optical fiber, two sets of optical fiber back Rayleigh scattering curves of the orthogonal optical signals are obtained. Mean processing is performed on the two sets of curves, thereby eliminating sensitivity of an optical fiber to the polarized state of the detecting light in a phi-OTDR method, and effectively ensuring capability of a phi-OTDR system for simultaneously detecting multiple events. The invention further discloses a device according to the phi-OTDR reinforcing method based on the polarized orthogonal optical pulse pair. The device is additionally provided with a polarization maintaining switch unit in a traditional OTDR system, thereby generating the polarized orthogonal optical pulse pair which is required in detection. Furthermore a pulse generator adjusts a sequential relationship among the polarization maintaining switch unit, an acoustic-optical modulator and a subsequent data processing unit. The phi-OTDR reinforcing method and the device thereof have functions of eliminating sensitivity of the optical fiber to the polarized state of the detecting light in the phi-OTDR method, effectively ensuring the capability of the phi-OTDR system for simultaneously detecting multiple events, and greatly reducing cost of a detecting system.

The invention discloses traditional Chinese medicine toothpaste with the effects of preventing and relieving tooth sensitivity. The traditional Chinese medicine toothpaste comprises 70%-99.7% of base material components and 0.3%-30% of anti-sensitivity components, wherein the base material components comprise an abrasive, a humectant, a thickener, a foaming agent, a sweetening agent, essence, a preservative and water; the anti-sensitivity components comprise 0.01%-5% of ginger root extract, 0.01%-5% of rhizoma cimicifugae extract, 0.01%-5% of moutan bark extract, 0.01%-5% of mangnolia officinalis extract, 0.1%-8% of strontium salt and 0.1%-10% of hydroxyapatite. According to the traditional Chinese medicine toothpaste, the ginger root extract, the rhizoma cimicifugae extract, the moutan bark extract and the mangnolia officinalis extract are compounded as anti-sensitivity components so as to add into toothpaste; meanwhile, the strontium salt and the hydroxyapatite are added to seal dentinal tubules and relieve sensitivity of teeth on cold, heat, sour and sweet due to nerve stimulation, so that the tooth sensitivity symptom is relieved, and even disappears, and thus, the tooth sensitivity can be prevented and relieved radically, antisepsis and anti-inflammation can be achieved, and oral cavity problems such as redness, swelling and bleeding of the gum can be relieved.

The invention relates to a DC power supply controlled by an energy closed loop, comprising a main circuit and a control circuit. The main circuit is a standard Buck circuit. The control circuit comprises: Inductance Current Detection Circuit, capacitance voltage detection circuit, output current detection circuit, Circuit for calculate energy storage of desired capacitance, an expected inductanceenergy storage calculation circuit, an expected load energy consumption calculation circuit, an expected total energy calculation circuit, an actual inductance energy storage calculation circuit, an actual capacitance energy storage calculation circuit, an actual load energy consumption calculation circuit, a load identification circuit, an actual total energy calculation circuit, an operation circuit, a controller circuit, and a PWM signal circuit. As that invention weaken the sensitivity of the dynamic performance of the output of the power supply to the value of the control parameter, the complexity of the controller parameter design is reduce, and the overshoot and oscillation phenomena of the voltage and the current are restrained, at the same time, the optimization of the dynamic adjustment time is realized.

The invention provides a light sensor calibration method and device, and belongs to the technical field of terminals. The method comprises the steps that the light sensor of a terminal under calibration is applied to detect at least two preset light environments so that at least two measured illumination is obtained, and the at least two preset light environments have the same preset illumination and different color temperature; whether the illumination difference between the at least two measured illumination meets standard conditions is detected; and if the illumination difference between the at least two measured illumination meets the standard conditions, the calibration coefficient is obtained according to the preset illumination and the at least two measured illumination, and the calibration coefficient is used for calibrating the light sensor of the terminal under calibration. According to the technical scheme, measurement of illumination through the light sensor is enabled to be more accurate.

The invention discloses a multiple composition for oral treatment. The multiple composition comprises 2-25 parts of bioglass and 0.1-10 parts of phosphate of potassium. The bioglass is spherical or ellipsoidal and the granularity is 220-2500 nanometers; the surface layer of bioglass is a mesoporous structure, wherein the mesoporous bore diameter is 6-45 nanometer; the bioglass comprises the components in form of oxides in parts by weight: 20-35 parts of CaO, 30-38 of SiO2, 0.1-1.8 parts of P2O5, 12-18 parts of B2O3, 0.1-0.8 part of CuO, 0-0.7 part of ZnO and 0-4 parts of Na2O, wherein the sum of CuO and ZnO accounts for 0.6-1.5% of the total weight and the ratio of the content of K2O and the sum of CuO and ZnO is (8-30): 1. The composition can be used for immediately reducing sensation, desensitizing with long action, protecting gum and stopping bleeding, inhibiting antibacterial activity of decayed teeth and whitening the teeth and has extreme promotional and practical values.