140 results about "Pressure index" patented technology

This invention relates to a system and a kit for stress and relaxation management. A cardiac activity sensor (101) is used for measuring the heart rate variability (HRV) signal of the user and a respiration sensor (102) for measuring the respiratory signal of the user. The system contains a user interaction device (103) having an input unit (104) for receiving user specific data and an output unit for providing information output to the user. A processor (106) is used to assess the stress level of the user by determining a user related stress index. The processor is also used to monitor the user during a relaxation exercise by means of determining a relaxation index based on the measured HRV and respiratory signals, the relaxation index being continuously adapted to the incoming measured signals and based thereon the processor instructs the output unit to provide the user with biofeedback and support messages. Finally, the processor uses the user specific data as an input in generating a first set of rules defining an improvement plan for self-management of stress and relaxation. The first set of rules is adapted to trigger commands instructing the output unit to provide the user with motivation related messages. Also, at least a portion of said user specific data is further used to define a second set of rules indicating the user's personal goals.

A sorption system is disclosed that includes a sorbent material and a fluid, in which the sorbent material and fluid in combination have a pressure index of at least 1.2.

The invention discloses a system for testing ultrasonic dynamic burning rate of a solid propellant, comprising a burning chamber, a gas distribution unit and a testing and controlling unit, wherein an ultrasonic transmitting and receiving unit is arranged at the top or bottom of the burning chamber; the ultrasonic transmitting and receiving unit is composed of an ultrasonic probe and a coupling medium; the coupling medium is a cylinder; two end surfaces of the coupling medium are respectively closely contacted with a working surface of the ultrasonic probe and a sample of the solid propellant; and the testing and controlling unit is used for controlling initial temperature and pressure of the burning chamber, detecting temperature and pressure of the burning chamber, and real-time burning parameters of the solid propellant, controlling the ultrasonic waves of the ultrasonic probe for transmitting fixed frequencies, receiving echoes from a burning surface of the solid propellant, and collecting and processing data. The system can test parameters such as static burning rate, dynamic burning rate, burning rate pressure indexes, burning rate temperature sensitivity coefficients and the like; and the testing efficiency of the system is dozens of times than that of a static testing apparatus.

The invention discloses a method for judging the full profile control degree of a water injection well. The method particularly comprises the steps: (1) according to data of a water injection profile of the water injection well, perforation data, full permeability data of small layer holes, and the like, computing the theoretical range PI0min-PI0max of a pressure index value after the full profile control is achieved, (2) computing the theoretical fullness degree range FD0min-FDOmax of the water injection well when the full profile control is achieved through a fullness degree formula, (3) computing a measured pressure index PI1 of the water injection well after the profile control according to a measured falloff curve of a well opening of the water injection well, (4) confirming the actual fullness degree FD1 of the water injection well after the profile control, and (5) judging whether the profile control is full or not according to analysis on the actual fullness degree FD1 after the profile control and the theoretical fullness degree range of the full profile control. The method can accurately and rapidly judge whether the profile control of the water injection well is full or not, the profile control of the water injection well is scientifically instructed, the effect of water injection development is improved, and the oil recovery rate of crude oil is improved.

The invention discloses a method for testing the multi-target line quasi dynamic combustion performance of a solid propellant, comprising the following steps: (1) testing static burning rates of a solid propellant to be tested under various pressures from low pressure to high pressure, so as to obtain the relation curve of the average combustion rate and pressure, the relation curve of the maximum effective combustion rate and the test pressure, and the relation curve of the minimum effective combustion rate and the test pressure; (2) performing a combustion pressurization test for a solid propeller sample under a close state, so that the pressure reaches the pressure range to be tested; (3) drilling 6-10 target holes on the covered solid propeller sample, and enabling the target lines and an ignition wire to pass through the target holes; (4) predetermining an initial pressure and an initial temperature, igniting the solid propeller sample in a close combustion chamber, and recording the fusing time of each target line during the combustion procedure of the solid propeller sample; and (5) obtaining the dynamic relation of the combustion length, pressure, temperature and time during the combustion procedure of the solid propeller via analysis, and calculating the combustion rate, combustion rate pressure index and combustion rate temperature sensitive coefficient of the solid propeller sample in a certain pressure range. The method disclosed by the invention is suitable for fast detecting performance, controlling quality and the like for each batch of products during the production procedure of the solid propeller, and can shorten the research and production period of the solid propeller and reduce the cost.

A method of changing psychological stress indices by evaluating manifestations of physiological change in the human voice wherein the utterances of a subject under examination are formatted as electrical signals and processed to alter selected characteristics which have been found to change with psycho-physiological state changes, such that the resultant output data signals are perceptually unchanged yet display none of the undesired physiological response characteristics. Apparatus for performing changes of this type includes a data input port, means for spectral alteration and a data output port.

The invention discloses a device for testing the transfiguration burning rate of gun propellant, belonging to the field of performance test of gun propellant. The device comprises a body assembly having a body and a piston, an ignition assembly, two pressure sensors and a data collecting and processing system. The body is provided with a combustion chamber and a piston working cavity to form a closed space through a corresponding end cap; the piston is glidingly matched with the piston working cavity; an igniting powder package in the ignition assembly is located in the combustion chamber and is connected with an igniter outside the body through an electrode and a lead. During a test, the tested gun propellant combusts in the combustion chamber and pushes the piston to move; the two pressure sensors respectively record the pressure curves p1-t and p2-t of the combustion chamber and the piston working cavity in the test process; after combustion of the tested gun propellant, the data collecting and processing system collects the curve p1-t and the curve p2-t and performs a series of calculating and processing to finally obtain the burning rate pressure coefficient and burning rate pressure index of the tested gun propellant. The invention solves the problem for testing the transfiguration burning rate of gun propellant.

The invention relates to a method for building an ecology risk assessment model for an estuary; the method comprises the following steps of: building an ecology risk assessment index system covering biological diversity indexes, comprehensive pollution indexes and pressure indexes of social and economic development in an estuary region; determining the standard values of risk upper limits and risk lower limits of the indexes in the index system according to the existing standard values, and carrying out standardization processing on data of stations; determining the weights of the indexes by using an analytical hierarchy process, and obtaining ecology risk values by weighting and adding; carrying out section division on the estuary region; and obtaining the risk value of each section after division, disclosing a space-time distribution pattern of the ecology risk in the estuary region and discriminating main factors resulting in the risks of the estuary region. The method provided by the invention has the advantages of being simple and objective, disclosing the space-time distribution pattern of the ecology risk in the estuary region, accurately accessing and discriminating the current situation of the ecology risk in the estuary region and main risk factors and providing a reliable theory and technical support for establishing a watershed ecology risk early warning mechanism and ecology risk management.

The invention relates to a solid propellant multi-target wire dynamic combustion performance testing system and a method. The method adopts a multi-target wire combustion rate testing system; dynamic combustion performance testing can be conducted; static testing can be conducted; and two measurement modes are convenient to switch. A change relation of combustion rate-pressure and combustion rate-temperature is obtained, and a combustion rate pressure index and a combustion rate temperature sensitivity coefficient are calculated. Small-dose testing can evaluate the combustion performance of a tested propellant within a corresponding pressure temperature change range, and is very suitable for conducting rapid performance detection, quality control and the like on each batch of products in a production process of the propellant. Compared with the common combustion rate testing system, the system shortens a development production cycle of the propellant, reduces raw material consumption, reduces manual operation, and saves the cost.

The invention relates to a solid propellant multi-thermocouple dynamic combustion performance testing system and a method. The method adopts a multi-thermocouple combustion rate testing system; dynamic combustion performance testing can be conducted; static testing can be conducted; and two measurement modes are convenient to switch. A change relation of combustion rate-pressure and combustion rate-temperature is obtained, and a combustion rate pressure index and a combustion rate temperature sensitivity coefficient are calculated. Small-dose testing can evaluate the combustion performance of a tested propellant within a corresponding pressure temperature change range, and is very suitable for conducting rapid performance detection, quality control and the like on each batch of products in a production process of the propellant. Compared with the common combustion rate testing system, the system shortens a development production cycle of the propellant, reduces raw material consumption, reduces manual operation, and saves the cost.

The invention provides a profile control and water plugging well selection decision-making method for low-permeability reservoirs. The method comprises calculating a fourth decision-making factor CI reflecting the injectivity of a plugging agent, a first anisotropic decision-making factor Pa1 in representation layers, a second anisotropic decision-making factor Pa2 among the representation layers, and a third anisotropic decision-making factor Pa3 on the representation plane respectively; establishing a profile control and water plugging decision-making factor RMF; and using the profile control and water plugging decision-making factor RMF for profile control and water plugging well selection decision-making; and calculating an accumulated oil increment QT of the profile control and water plugging measure, which represents the profile control and water plugging measure effect, by using the profile control and water plugging decision-making factor RMF. By means of the method, the problems of instable calculation results and poor effect predictive when a pressure index (PI) decision is applied to low-permeability reservoirs, and the scientific profile control and water plugging decision for low-permeability reservoirs is implemented.

The invention relates to the field of coal mine safety, and in particular relates to a method for detecting the fault of a coal bed methane collecting and delivering pipeline at a coal mine region, wherein the method can carry out real-time detection for a coal bed methane collecting and delivering pipe network, and determine whether the pipeline malfunctions. The method comprises the following steps: 1) collecting the pressure, flow rate, concentration and temperature data in the coal bed methane collecting and delivering pipeline at the coal mine region; 2) obtaining a pressure index K1 of the pipeline between two collecting points according to the pressure, flow rate, concentration and temperature data of two adjacent collecting points; and 3) determining the pipeline malfunctions if the pressure index K1 is greater than a threshold value epsilon 1; obtaining a flow rate index K2 and a concentration index K3 of the pipeline between two collecting points according to the pressure, flow rate, concentration and temperature data of two adjacent collecting points in the step 2) further; and then determining the type of the fault according to a fault determining model. According to the invention, through determining whether the pipeline malfunctions or the type of the fault, the alarm is convenient to raise, the fault is convenient to deal with, and the safe transportation of drawn and extracted coal bed methane under the well at the coal region is convenient to realize.

The invention discloses a method and a terminal for controlling a touch pad cursor to slide on the basis of pressure. The method includes the following steps: (A) the position coordinates of an sliding event on a touch pad are acquired, and an pressure index on each position coordinate is detected; (B) after analog-to-digital conversion and signal processing performed on the pressure indexes, pressure values are generated, and are matched with preset pressure levels, and the sliding coefficients of the matched pressure levels are outputted; (C) according to the sliding coefficients, the moving speed of the touch pad cursor on a display screen is controlled, and thereby the scrolling speed of the display screen is indirectly controlled. The invention is not limited by the sizes of touch pads, moreover, pressure is controllable, and operation is convenient for users.

The invention provides an optimization method and system for pump-storage-group double-target guide-vane closure based on double-target optimization. The optimization method includes the specific steps that the group rotating speed and volute water hammer pressure at an initial moment are collected; a pump-storage-group transient process simulation model is established, model output is the group rotating speed and the volute water hammer pressure, and model input is the guide-vane closure rule; under the constraint conditions of a control parameter and a target function, a double-target optimization function serves as a target, the pump-storage-group transient process simulation model is iteratively solved, and an optimization control parameter is obtained. According to the optimization method and system, the rotating speed index and the water hammer pressure index are simultaneously optimized, and a closure rule optimization scheme set can be obtained by solving the optimization modelone time; the opposition characteristic of the target is fully responded, and the optimization efficiency of the guide-vane closure rule is remarkably improved.

The invention discloses a detection method of a detection device for drainage pipeline blockage faults. The method comprises the steps that the detection device for the drainage pipeline blockage faults is arranged; a computer obtains a signal of a normal / blocked pipeline from the receiving end; acoustic response signals in two working conditions of a drainage pipeline are acquired; LMD decomposition is conducted on the acoustic response signals of the normal pipeline and the blocked pipeline; correlation coefficients of all PF components of the normal pipeline and an original signal and correlation coefficients of all PF components of the blocked pipeline and the original signal are calculated by adopting a Pearson correlation coefficient method, and each component of which the correlation coefficient exceeds 15% is taken as an effective PF component signal; energy entropy indexes, approximate entropy indexes and average acoustic pressure indexes of the effective PF components of the normal pipeline and the blocked pipeline are calculated to serve as a characteristic set; an optimal parameter of the characteristic set is sought through a K-CV method; the steps are repeated, and fault identification is conducted on other sections of the pipeline by adopting an SVM classifier with the trained parameter. According to the detection method, the detection procedure is conveniently conducted, and the accuracy and reliability of a detection result are improved.

The invention discloses a method for evaluating the ecological safety early-warning level of a wetland, and relates to the field of ecological environments. The method comprises the steps: determining an early-warning system index factor according to a pressure-state-response model; obtaining a prediction value of a pressure index factor through a gray sequence prediction model; obtaining a land utilization simulated diagram of a particular year through a Clue-S model, combing with software FRAGSTATS, and determining a prediction value of a state index factor and a prediction value of a response index factor; employing an analytic hierarchy process to construct a judgment matrix, and determining the weight of each index factor of en early-warning system; determining an ecological safety index of each index factor of the early-warning system through a logistic growth curve model; and determining an ecological safety value of the wetland through a comprehensive evaluation method. The method can achieve the quantification of the early-warning level of the ecological safety of a corresponding region in future through a wetland ecological safety early-warning standard, and can the effective protection measures for the ecological environment of a regional wetland are proposed according to a specific prediction result.

The invention relates to a power grid infrastructure vulnerability evaluation method. The method comprises the first step of establishing a power grid infrastructure evaluation index system, the second step of acquiring and processing index data in the evaluation index system, the third step of determining a pressure index value VP, a state index value VS and a response index value VR in power grid infrastructure vulnerabilities, the fourth step of establishing a basic model of a triangular chart according to the pressure index value VP, the state index value VS and the response index value VR, and the fifth step of establishing a triangular classification chart used for evaluating classification of the power grid infrastructure vulnerabilities and the vulnerability trend. The method plays an important guiding role in making important power grid infrastructure protective measures; the evaluation method can provide effective technological means for safety management, hidden danger checking, safety evaluation and the like of various important power grid facilities of an electric power company system and can prevent various accidents caused by the important power grid infrastructure vulnerabilities and reduce economic losses caused by the accidents.

The invention discloses a combustion test apparatus for oil-immersed power transformers. The combustion test apparatus comprises a combustion test stand unit, for combusting an oil-immersed power transformer, including an igniting disc for combusting a tested wood stack and a transformer support, a combustion test room unit including an oil collecting pool, a firewall and a transformer combustion test room, an oil-water separating pool arranged inside and outside the transformer combustion test room for separating oil and water, a square water ditch which is arranged outside the transformer combustion test room, communicates with the oil-water separating pool to store water generated from oil and water separation during a fire extinguishing process, and a fire extinguishing protection unit including a water spraying fire extinguishing apparatus for extinguishing fire. The apparatus further comprises a state quantity monitoring unit for monitoring the temperature, heat radiation and pressure index during an oil-immersed transformer combustion process, a power supply unit for supplying power to the oil-immersed transformer, and a camera monitoring holder.

The invention relates to a solid surface sizing agent for paper-making as well as a preparation method and application thereof. The solid surface sizing agent for paper-making comprises the following raw materials in parts by weight: 75-90 parts of ferrous sulfate, 1-5 parts of manganese sulfate, 1-5 parts of paraffine, 2-5 parts of sodium sulfate, 1-3 parts of boric acid, 1-10 parts of bentonite and 1-5 parts of polyvinyl alcohol. The solid surface sizing agent is simple in preparation method, high in curing speed and low in cost and can be cured immediately after leaving a machine; the water resistance and the annular pressure index of paper can be improved on the premise of replacing 20%-30% of sizing starch with the solid surface sizing agent; in addition, paper or a paperboard subjected to sizing with the surface sizing agent disclosed by the invention does not have the problem of damping in summer.

A device is provided for assessing impairment of blood circulation in a patient, such as that in perfusion failure, by measurement of blood flow adjacent a mucosal surface accessible by a mouth or nose and connecting with the gastrointestinal tract or upper respiratory / digestive tract of a patient. The device includes a blood-flow sensor adapted to be positioned adjacent a mucosal surface with a patient's body and measuring blood flow in adjacent tissue and a PCO.sub.2 sensor adapted to be positioned adjacent the mucosal surface and measuring PCO.sub.2. In addition a pH sensor may be used in combination with the blood flow determination. A method of detecting perfusion failure is also disclosed. The method includes utilizing blood-flow measurements in conjunction with a surface perfusion pressure index and / or an optical plethysmography index to more accurately assess perfusion failure. These measurements may also be supplement by taking measurements of pH, sublingual PCO.sub.2, and Sa O.sub.2. The invention affords rapid measurement and detection of perfusion failure.

An embodiment of the invention provides a global memory sharing method, a global memory sharing device and a communication system to improve independence of sub-operation systems and reduce the pressure of a global memory management service. The method includes the steps: counting the page swap-out rate in the rotation period of tasks in predetermined times and the memory residence time ratio in the page swapping period by the sub-operation systems; calculating memory pressure indexes according to the page swap-out rate and the memory residence time ratio by the sub-operation systems; issuing application to the global memory management service by the sub-operation systems if the memory pressure indexes are larger than a memory pressure threshold. Under the architecture of a multi-operation system, the sub-operation systems can finish more adaptive work, global memory management service complexity is reduced, and system performances are improved. Besides, as the sub-operation systems can independently apply for and release memories, the utilization rate of a global memory can be increased, and the architecture of the multi-operation system has better expandability.

The invention relates to fullerene poly(glycidyl nitrate), a preparation method and an application thereof, wherein the fullerene poly(glycidyl nitrate) has the chemical structure formula represented by a formula (I). The invention further relates to the preparation method, which comprises: adopting monomethyl-terminated poly(glycidyl nitrate) (PGN) and malonyl chloride as raw materials, carrying out the esterification and bromination two-step reaction to prepare bromomalonate dipoly(glycidyl nitrate), and reacting with fullerene to prepare the fullerene poly(glycidyl nitrate). According to the present invention, the fullerene derivative can be used in the solid rocket propellant as a novel energetic combustion catalyst; and experiment results prove that the product yield can be 82%, and the platform combustion rate can be increased by 65% while the pressure index is reduced to 0.21 when the product of the present invention is applied in the solid propellant as the novel combustion catalyst. The formula I is defined in the instruction, wherein n is 2-20.

The invention relates to a press-fit high density fuel-rich propellant for solid rocket ramjets and a preparation method thereof. The press-fit high density fuel-rich propellant comprises: 30%-45% ofan oxidant; 45%-60% of fuel; 3%-6% of a binder; 1%-3% of a plasticizer; 1%-3% of a desensitizing agent; and 0.5-2% of a combustion catalyst. The propellant provided by the invention has the characteristics of no need for curing and crosslinking, short production cycle, low cost and low energy consumption, and solves the problem of poor technological performance of existing cast type high solid content (a solid content of greater than 88%) fuel-rich propellants. The propellant provided by the invention has good compressibility, can achieve unidirectional compaction at room temperature, and whenthe specific pressure is lower than 240MPa, the density of the propellant grain (phi 40mm) is 97.5% of the theoretical density. The propellant provided by the invention has high energy and density, the density of the propellant is greater than 2.0g / cm<3>, the calorific value is greater than 45MJ / kg, the primary injection efficiency is more than 96%, and the pressure index is less than 0.55.

The invention discloses an ML kraft paperboard and a preparation process thereof, and mainly relates to the technical field of papermaking. According to the ML kraft paperboard, basis weight is 170, 200g / m<2>, the banner quantitative difference is less than or equal to 3%, tightness is greater than or equal to 0.75 g / cm<3>, smoothness is greater than or equal to 5s, a lateral ring pressure index is greater than or equal to 7.3N.m / g, interlayer bonding strength is greater than or equal to 130J / m<2>, a bursting index is greater than or equal to 1.8kpa. M<2> / g, transverse folding strength is greater than or equal to 4 times and paper moisture is 8+ / -2%. The preparation process of the ML kraft paperboard comprise the steps that preparation, pulping, mixing, paper forming and rewinding are carried out to obtain the paperboard, and then packaging is carried out; and pulp is ground during pulping, spray starch and fillers are added during paper making, and a dyeing agent is added for dyeing.The ML kraft paperboard has the advantages of low cost, high interlayer bonding, high water resistance, high smoothness and clean front appearance. The ML kraft paperboard is mainly used in a surfacelayer and an inner layer of an industrial paper tube, the ''angle-rising'' problem does not occur when the paper tube is cut in sections due to low basis weight; and the problems of surface blisteringand paper tube layering are solved due to the fact that the interlayer bonding strength of the ML kraft paperboard is higher than that of a general kraft paperboard and cardboard paper.

A process for generating refrigeration, electricity or work utilizing a sorption system is disclosed. The sorption system includes a sorbent material and a fluid, in which the sorbent material and fluid in combination have a pressure index of at least 1.2.

The invention relates to a numerical simulation method for replacing a gas-driven component model. The method comprises the following steps of: carrying out PVTi fitting on a target block fluid to obtain PVTi fitted fluid property data; establishing component mechanism models under different permeation rates, and obtaining change rules of a mixed-phase area during oil deposit gas-driven development under the different permeation rates; building a practical component model according to the PVTi fitted fluid property data; obtaining a block practical numerical simulation model according to the change rules of the mixed-phase area during the oil deposit gas-driven development under the different permeation rates; adjusting mixed-phase coefficients in the block practical numerical simulation model to ensure that the differences between the capacity indexes and pressure indexes of the practical component and the block practical numerical simulation model are not higher than 10%, and obtaining reasonable mixed-phase coefficient distribution of a target block; and building a Todd-longstaff practical model, carrying out calculation in the mixed-phase area by using a Todd-longstaff algorithm, and carrying out calculation outside the mixed-phase area by using a common black oil algorithm.

The invention discloses a song emotion pressure analysis method comprising steps: S1, cutting the lyrics; S2, judging the structure of lyrics by analyzing the repetition, parataxis of the lyrics and the lyrics fragment sequence; S3, determining the average singing speed of the song according to the words of the lyrics and the singing time; S4, abstracting the emotion unit from the lyrics and judging the emotion pressure polar of the emotion unit; S5, calculating the lyrics emotion pressure index according to the structure of the lyrics, the average singing speed of the song and the emotion pressure polar of the emotion unit. Based on the method, the user can exactly position the required song, thereby improving the song searching hit rate and shortening the song searching time.

The invention relates to a smokeless propellant and a preparation method thereof. The propellant is composed of the following raw materials (by weight): 20-98 parts of nitrocellulose, 0-80 parts of ammonium perchlorate, 0.5-10 parts of ferrocene and 0.5-5 parts of polyvinyl butyral, wherein nitrogen content of the nitrocellulose is 11-12.5%. The preparation method comprises the following steps: 1,uniformly sieving nitrocellulose, ammonium perchlorate and polyvinyl butyral; dissolving ferrocene in ethanol, dichloromethane or a mixed solvent of ethanol and dichloromethane; dissolving the sievedraw material mixture in a prepared solution, pelletizing by a drum-type pelletizer or a screen method to prepare particles of 1-2 mm, and drying in the sun at normal temperature. During combustion offerrocene having the catalytic action, hydrogen chloride gas generated from an oxidizing agent ammonium perchlorate can be absorbed effectively, thereby greatly reducing irritating odor of the smokeless propellant with the ammonium perchlorate as the oxidizing agent and lowering pressure index of the smokeless propellant. Thus, the smokeless propellant has good safety, the combustion product is clean, and firework ornamental effect and security and environmental protection requirement are improved.

The invention discloses a preparation method of case board paper. The preparation method of the case board paper comprises the following steps: respectively crushing wood scraps and crop straws, grinding the wood scraps and the crop straws into crude fiber, adding water into the crude fiber and pulping, uniformly mixing, removing impurities, adding water and soaking the pulp, scattering the pulp to obtain raw pulp, adding the raw pulp into a polyacrylamide solution, making paper to obtain the paper, preheating the paper, applying glue to the paper, enabling the paper to pass through a single-side machine to obtain the case board paper, and drying the case board paper. According to the preparation method of the case board paper, the wood scraps and the crop straws are used as base raw materials, so that the waste is turned into wealth, so that not only the production cost is reduced, and also the problem of treatment of the wood scraps and the crop straws can be solved; polyacrylamide is added in the paper making process; the problem of low fiber strength of the crop straws is compensated; the breakage resistance index and the circular pressure index of the case board paper are improved.