236 results about "Energy method" patented technology

Methods of enhancing stem cell therapy through the administration of low level light energy are provided in several embodiments. Some embodiments comprise irradiating stem cells before or after implantation at a target tissue having loss of function due to damage or disease, with a resultant increase in the efficacy of the cell therapy. In some embodiments, light energy enhances one or more of the viability, proliferation, migration or engraftment of the stem cells, thereby enhancing the therapeutic effects of the irradiated cells during cell therapy.

The invention relates to an aeroelastic stability fluid-structure interaction prediction method of turbo-machine changed interblade phase angles, which predicts the aeroelastic stability of a turbo-machine through the modal pneumatic damping ratio of different interblade phase angles by adopting an energy method. The method adopts the modal analysis containing prestress on established single-sector finite element models, realizes the vibration displacement transfer on the fluid-structure interaction interface through a data transfer method, adopts the dynamic mesh technology for obtaining mesh files taking the interblade phase angles into consideration, is used for unsteady computation fluid mechanic analysis of Junction Box modules in CFX, further obtains the modal pneumatic damping ratio of each interblade phase angle, and is used for predicting the aeroelastic stability. The method based on the fluid-structure interaction fully utilizes the cutting edge technology of the computational structural mechanics and the computation fluid mechanics, ensures the computation precision in each sub system, and improves the computation efficiency through the division of a fixed region and a movable region. The invention has good practical value and wide application prospects in the technical field of turbo-machine simulation.

The invention provides an energy method-based high-temperature radiation rate measuring device of a semi-transparent material and a revising method for deducting background radiation, relating to a high-temperature normal spectral radiation rate revising and testing method of the semi-transparent material and belonging to the technical field of high-temperature material physical property measurement. The energy method-based high-temperature radiation rate measuring device of the semi-transparent material and the revising method for deducting the background radiation solve the problems of high construction cost, low temperature heating upper limit and lower testing precision of the traditional test system. The high-temperature radiation rate measuring device comprises a Fourier infrared spectrum analyzer, a reference blackbody furnace, a rotatable reflection mirror, a heating furnace, a heater, a temperature collecting device, a temperature routing inspection operation instrument, an incidence light source, a data processing system, a diaphragm and a semi-transparent test piece; the heating furnace is internally provided with a light-transmitting opening, a fixing device of the semi-transparent test piece, and the temperature collecting device; the central axis of a light-emitting opening of the incidence light source, the central axis of the light-transmitting opening of the heating furnace, the mirror surface of the rotatable reflection mirror and the central axis of the light outlet opening of the reference blackbody furnace are collinear with a horizontal axis. The energy method-based high-temperature radiation rate measuring device of the semi-transparent material and the revising method for deducting the background radiation, disclosed by the invention, are used for measuring the high-temperature spectral normal radiation rate of the surface of the semi-transparent material.

The invention relates to a computer save energy method. The method includes steps as follows: an image information collected by an image obtaining module is sent to a user monitor module, the user monitor module scans the image information and sends result to an energy saving control module, if no facial image, the energy saving control module processes energy saving control to computer, if facial image being, the energy saving control module keeps normal working state of computer. The method solves problem that computer consumes energy still when a user is disturbed by something and the computer is not turned off or is adjusted to waiting, sleeping modes in computer power management system with existing technique, and waiting or sleeping time interval is overlong, and inconvenient using caused by user using manual switching energy saving mode. The method has energy saving function with human-computer communication mode, the computer is controlled to enter energy saving mode when no people is ahead on the computer or people does not operate computer, and can realize energy saving control when user leaves and using computer when user comes, the method is convenient and can save energy efficiently.

The invention relates to an obstructive sleep apnea-hypopnea syndrome (OSAHS) screening method and a device. Formant characteristics of snore are adopted as technical indexes for screening OSAHS; Snore sections are extracted by a short-time energy method at first, then LPC (linear predictive coding) is used for modeling, after predicting factors of the LPC are obtained, a first formant frequency of each snore section is obtained by a root extraction method, as ranges of formant frequencies of different modes are different, the different snore sections can be distinguished, all first formant frequencies of all snorers are classified, by the aid of K mean values, and thresholds for distinguishing normal snore and abnormal snore of individuals are determined according to classified results; and then AHI (apnea-hypopnea indexes) in a PSG (polysomnogram) are simulated so that average times of apnea and hypopnea of the snorers within an hour are obtained. According to the OSAHS judgment standard, whether the data section has snore of a normal person or snore of a patient with the OSAHS is judged. The obstruction sleep apnea-hypopnea syndrome screening method and the device are low in cost, high in applicability and simple in operation and are non-contacting.

Method for detecting bearing defect severity based on bearing rotation speed and at least one data sample of sensor data obtained to measure vibrations of a bearing ring is provided. The method includes converting the data sample from time domain to frequency domain to obtain a signal frequency spectrum; determining a defect center frequency of the bearing using the rotation speed; and identifying a predetermined number of frequency peaks of the signal frequency spectrum. A total vibration energy in an overall frequency band including the predetermined number of frequency peaks is first determined; next, for each of the frequency peaks, a peak energy as a spectral energy of signal components giving rise to the frequency peaks is determined; calculating a bearing defect spectral energy using the peak energies; and finally a ratio of the bearing defect spectral energy and a total vibration energy to assess a defect severity is obtained.

The invention relates to a novel method for modeling a B spline surface, in particular to a novel method for modeling a free-form surface in the field of CADs (Computer Aided Designs). As long as users interactively design two groups of section line sampling points, a smooth B spline interpolation surface can be automatically generated. The novel method comprises the following steps of: firstly calculating the initial parameter of each section line sampling point with a centripetal parameterization method; then recalculating the parameter of each section line and standardizing the parameters of the sampling points; calculating the node vector of each section line with an averaging method, and then unifying the node vectors of the homodromous section lines according to Schoenberg-Whitney conditions; based on the B spline surface interpolated and calculated with an energy method, respectively lofting the two groups of B spline section lines to obtain two unidirectional skinning surfaces, then constructing a tensor product surface of the common points of the interpolated section lines, wherein the Boolean sum of the three surfaces is bidirectional skinning surface to be solved. The B spline surface constructed in the invention has less control peak quantity, good surface smoothness, can be interpolated with bidirectional sampling points and meet higher surface modeling requirements.

Methods, systems, and apparatus for reducing or eliminating airborne pollutants and generating a measure of usable energy from the same are provided. The Implo-Dynamics™ Treatment System includes several embodiments for mixing steam and emissions and injecting said mixture into a process fluid transmission network. The vacuum induced flow of the Working Fluid provides a means of propelling a Hydro Turbine unit for energy recovery purposes. The process includes reactant injection, gas transfer, filtration, remediation of pollutants, and delivers a novel means for carbon dioxide capture and sequestration. Furthermore, the detoxified process by-product solids represent a beneficial reutilization and/or recycling resource. The methods and systems of the present invention include a comprehensive arrangement of process configurations and components as well as a means of operation.

The invention relates to a method for the simulation analysis on the meshing stiffness of a cylindrical spur gear undergoing damaged single-tooth failure. The method comprises the following steps: firstly, setting the correction coefficient of the meshing stiffness of single-tooth and double-tooth meshing section on the basis of the calculation results of the average stiffness according to the finite element method and the national standard method, so as to improve the calculation accuracy of the meshing stiffness of a normal gear according to the energy method; secondly, establishing a finite element model of the spur gear undergoing damaged failure targeting on the failure location of the spur gear by combining the three-dimensional modeling software and the finite-element analysis software, and compiling a simulation calculation program by using the computer language, so as to calculate the time-varying meshing stiffness; and finally, integrating the calculation results of the two steps to obtain the integrated meshing stiffness of the spur gear. By fully integrating the advantages of the corrected energy method and the finite element method, the invention can not only guarantee the calculation accuracy, but also improve the calculation efficiency. The method of the invention for the simulation calculation of the meshing stiffness of the gear undergoing damaged single-tooth failure is effectively applicable in the research on the vibration response mechanism of a gear system.

Methods are provided for rapidly simulating “in-service” warp distortion of a wood product. Methods are also provided for rapidly estimating shrinkage properties of a wood product by using electromagnetic energy to dry and redistribute absorbed water in the wood product.

Disclosed is a multi-message fusion section locating method based on an extreme learning machine. After a fault happens, terminals extract feature vectors from zero-sequence transient current measured in real time according to a transient energy method, a wavelet method and a first half-wave method, upload the feature vectors to a master station and input the feature vectors into the extreme learning machine network where weight parameters are obtained after being trained, and the main station starts the multi-message fusion locating algorithm and outputs a section locating result. As the terminals installed at the multiple positions of a circuit can detect the transient zero-sequence current signals in real time, so that the section locating method based on the transient messages can be applied to the actual engineering. The influence on the method by factors like the grounding position, the grounding time and the grounding transition resistance is small, the extreme learning machine is intelligently fused and comprehensively analyzes the zero-sequence current transient information after the fault, and various algorithms are fused to achieve the complementary effect. The inherent defects of a single locating method are overcome, the transient zero-sequence current characteristic can be fully utilized, the fault section can be determined accurately, and the smaller the space between the terminals is, the more accurate the locating is.

The invention belongs to the technical field of surface-mounted permanent magnet synchronous motors, and provides an improved permanent magnet angle cutting method for the problem of reducing cogging torque. A cogging torque expression is deduced on the basis of an energy method and Fourier decomposition and a factor relationship of affecting the cogging torque is confirmed; and a fourier coefficient of residual magnetism square of a permanent magnet after angle cutting is deduced on the basis of radial magnetization of the permanent magnet, an optimal determining method of an angle cutting length proportion coefficient is provided, and the problem of minimization of the cogging torque is converted into solving of a minimum value of a secondary function. According to the method, the simulation time of the motor can be shortened while the calculation accuracy is ensured and the cogging torque of the motor is reduced.

Method for processing an article with a dense processing fluid in a processing chamber while applying ultrasonic energy during processing. The dense fluid may be generated in a separate pressurization vessel and transferred to the processing chamber, or alternatively may be generated directly in the processing chamber. A processing agent may be added to the pressurization vessel, to the processing chamber, or to the dense fluid during transfer from the pressurization vessel to the processing chamber. The ultrasonic energy may be generated continuously at a constant frequency or at variable frequencies. Alternatively, the ultrasonic energy may be generated intermittently.

A low energy method of pyrolysis of rubber or other hydrocarbon material is provided. The hydrocarbon material is heated while maintaining a vacuum, using a clay catalyst. In an additional embodiment, the temperature of the reaction chamber and corresponding fuel input is varied either over time or spatially within the reaction chamber, to take advantage of the exothermic properties of the reaction. With the method of the present invention, a higher quality solid reaction product can be achieved, as well as a liquid having reduced polyaromatic hydrocarbons and oxidized organic contaminants.

The invention discloses a low-current single-phase grounding fault line selection method based on multi-criterion integration. The method includes that a symbol t is used for indicating transient-state component strength, and a symbol r is used for indicating reliability; the higher the reliability r is, the higher the line selection accuracy is when a wavelet and energy method is adopted, and the line selection accuracy descends as the r is reduced and descends in an accelerated manner; when r is larger than or equal to 0.8 and smaller than or equal to 1, line selection accuracy is up to 99% when a line selection method based on transient-state component is adopted; when r is larger than or equal to 0 and smaller than or equal to 0.4, line selection accuracy of a line selection method based on transient-state component descends obviously, so that the line selection method based on steady-state component is unsuitable for adoption; when r is larger than or equal to 0.4 and smaller than or equal to 0.8, an integration method is started for line selection. The method utilizes both transient-state information of fault and steady-state information, so that the defect of single criterion is overcome to certain extent, and complementing of advantages of a transient-state algorithm and a steady-state algorithm is realized.

The invention relates to a static reactive power compensation device based on an energy method and a control method thereof, belonging to the technical field of power transmission and distribution. The invention comprises a mutual inductor group, a filtering and signal conditioning module, an A/D conversion module, a computing module, a memory module, a phase-locked loop circuit module, a communication module and a display and keyboard operation module. The invention can evaluate and analyze possibly potential dangers of a power grid by adopting energy function method, predict the influence on the stable operation of the power grid possibly resulted from faults by establishing an anticipated accident list, carry out scientific, effective and real-time analysis and evaluation on the power grid state and carrying out integral cognition on the power grid performance as complete as possible, thereby quantitatively evaluating the operation state level of the power grid; and the invention effectively avoids an algorithm from falling to local optimum by adopting an improved particle intelligent swarm algorithm based on a fuzzy control theory.

The invention relates to a single-phase earth fault line selection method on the basis of an EEMD (ensemble empirical mode and decomposition) and energy method for the resonance earthed power distribution network. The single-phase earth fault line selection method includes firstly determining a start moment of faults, subjecting zero-sequence current of outgoing lines of 1/2 power frequency periods before and after the start moment of the faults respectively to EEMD, taking out high-frequency IMF component and residual component of current respectively, and solving the sum of energy of the high-frequency IMF component and the residual component of the lines respectively, acquiring energy weight coefficient of the lines and judging faulted elements by analyzing and comparing the energy weight coefficient. The single-phase earth fault line selection method is unaffected by transitional resistance and is high in interference resistance, and manual operation during fault judgment is omitted; when various types of single-phase earthed faults occur, the fault elements can be accurately judged.

The invention relates to a quantitative calculation method for the meshing stiffness of a gear with a minor defect. In order to describe the influence of a typical gear fault on the time-varying stiffness characteristic, a meshing stiffness energy method calculation model is firstly introduced, wherein five kinds of elastic strain energy, which refers to bending, shearing, radial compression, contact and base deformation, are respectively considered, and five corresponding stiffnesses are further formed. The quantitative calculation method is based on the energy method, the influences of case crush, tooth root crack and tooth breakage on the stiffness distribution are discussed one after another. Aiming at spalling defects, the influences of spalling length (in the meshing direction) and spalling width (in the tooth width direction) on a stiffness distribution curve is researched, and the quantitative relationship between the spalling size and the stiffnesses degradation is obtained. In the aspect of flexural fatigue crack, the change rule of the stiffness curve along with the crack depth, and the quantitative relationship between the stiffness curve and the crack depth are discussed. In the aspect of broken gear tooth, the influence of missing of a single tooth on the stiffness distribution is discussed. By adopting the quantitative calculation method, the actual meshing situation can be really reflected, the complexity and computation in the process of solving can be lowered.