399 results about "Volume variation" patented technology

Under a known pressure is externally applied to a reference member to which an optical fiber is fixed, test light is allowed to enter the optical fiber, and at least one of a reference Brillouin measurement for determining a reference Brillouin frequency shift amount based on the Brillouin scattering phenomenon, and a reference Rayleigh measurement for determining a reference Rayleigh frequency shift amount based on the Rayleigh scattering phenomenon is performed. A Brillouin measurement coefficient or a Rayleigh measurement coefficient is determined from these calculation results. An optical fiber is fixed to a sample member, the volumetric change of which is unknown, and the same sample Brillouin measurement or sample Rayleigh measurement is performed to determine the frequency shift amount. The volumetric change of the sample member is determined from the sample Brillouin or the sample Rayleigh frequency shift amount, and from the Brillouin or the Rayleigh measurement coefficient.

Embodiments of the invention provide approaches for replacement metal gate (RMG) diffusion break formation. Specifically, a diffusion break is created after source / drain (S / D) formation, thereby allowing facet free and high quality S / D formation. A dummy gate body is removed selective to a sidewall section of a capping layer and a GOx layer formed over a substrate, and the opening is then extended through the GOx layer and into the substrate by etching the dummy gate body selective to the sidewall section of the capping layer. Retaining the capping layer during the dummy gate body etch enables the diffusion break to be self-aligned to the gate and eliminates device variability due to S / D volume variations. Processing then continues with RMG poly open chemical mechanical planarization (POC) and poly open planarization (POP).

An apparatus and method for determination of change in volume of a body part or body organ on a real-time basis. In a breastfeeding application, an inflatable cuff is positioned on a nursing breast and allows direct access to the nipple by the breastfeeding infant. The inflatable cuff includes an outer shell portion and an inner inflatable bladder. The pressure in the bladder is monitored regularly by a pressure sensor, during a breastfeeding session. When the pressure drops below a preselected pressure, a controller directs a pump to pump air into the inflatable bladder to maintain the preselected pressure. The volume of added air is monitored during the breastfeeding session. Various calibrations are used to correlate the amount of added air, to the volume of breast milk withdrawn from the breast. The volume of breast milk withdrawn during breastfeeding is calculated and displayed throughout the breastfeeding session.

The present invention involves methods and systems for providing feedback speech instruction. The method involves collecting data corresponding to a plurality of parameters associated with verbal and non-verbal expression of a speaker and analyzing the data based on an ideal model. The method also includes generating a report or an instruction responsive to the report, and delivering the report or the instruction to the speaker. The plurality of parameters associated with verbal and non-verbal expression includes pitch, volume, pitch variation, volume variation, frequency of variation of pitch, frequency of volume, rhythm, tone, and speech cadence. The system includes a device for collecting speech data from a speaker, a module with software or firmware enabling analysis of the collected data as compared to an ideal speech model, and an output device for delivering a report and / or instruction to the speaker.

The invention discloses a device of synchronizing playing notification tone while inputting slide operation which is used to the mobile terminal of the two loudspeakers, the two loudspeakers are each provided on the top and bottom part. The device comprises: a testing module which is used to test real-timely inputting slide operation in the touch screen of the motive terminal; a notification tone broadcast module which is used to control the preset notification tone of the tow loudspeakers while the slide operation is tested; a direction judgment module which is used to judge real-timely the slide direction of the slide operation; a volume regulation module which is used to adjust the volume of the notification tone the two loudspeakers play according to the slide direction. The invention discloses a method of synchronizing playing notification tone while inputting slide operation. Compared with the prior art, the technical scheme realizes synchronizing playing notification tone while inputting slide operation, the notification tone volume variation rule is consistent with the slide direction of the slide operation, the slide operation is more interesting.

An infusion pump and method are provided which combine flow rate measurements calibrated by accurate volume measurements over time.

A hemodialysis treatment apparatus includes a circulating blood volume variation rate detecting device, a vital sign detecting device and a display. The circulating blood volume variation rate detecting device detects a circulating blood volume variation rate of a patient in a time-course of a hemodialysis treatment. The vital sign detecting device detects a vital sign value of the patient in the time-course of the hemodialysis treatment. The display has a screen and displays both the circulating blood volume variation rate and the vital sign value on the screen along a time scale. The hemodialysis treatment apparatus dialyzes and ultrafiltrates extracorporeally circulating blood of the patient to perform the hemodialysis treatment.

Method, system and program product are provided for monitoring coolant within a cooling system designed to provide system coolant to one or more electronics subsystems. The monitoring technique includes employing at least one pressure transducer to obtain multiple pressure measurements related to an amount of coolant within an expansion tank of the cooling system, and determining a rate of volume change of coolant within the expansion tank employing the multiple pressure measurements. Successive pressure measurements can be taken at a known time interval to determine the rate of volume change of coolant within the expansion tank. An automatic determination can also be made on the immediacy of action to be taken for service of the cooling system based on the rate of volume change of coolant within the expansion tank.

An apparatus for the heating of a viscous fluid contained in a heat generating chamber by a rotatable unit having a fluid shearing surface formed on a face thereof, the unit by shearing of the viscous fluid on that face induces the heating of said viscous fluid and where an external heat extracting surface is provided for this heat to be removed by a further fluid in contact with that surface. The two dissimilar fluids are kept apart by at least the housing acting as a fluid partition. The unit has an interior space as a storage location for viscous fluid with a deformable element for volume changes of the viscous fluid during the operation of the apparatus.

The invention relates to a roudong volume variation method for fluid machinery and its mechanisms and applications, which is suitable to be used in internal combustion engine, pump, compressor, motor, transmission, refrigeration, metering, etc. In the roudong volume variation method, a roudong volume variation motion can be produced by the combination of a revolution of a roudong rotor in a roudong cavity and a rotation of the same in an inverse direction, causing speed, moment of momentum and loss to be reduced by 90%˜99% in comparison with a rotor with the same ratio. A roudong internal combustion engine has an efficiency increase of 25% and is free from lubrication. A roudong pump has an efficiency as high as 90%. Roudong isothermal compression can reduce 39%˜67% work, while roudong refrigeration can reduce 50% work. Roudong general fluid machinery has the functions of pump and motor, and also has such functions as metering, control, etc. Roudong general fluid machinery, which can be operated with gas, liquid and two-phase flow, can be provided with a flow rate as desired. It has good pressure self-adaptability, versatility and high efficiency.

The invention discloses a natural gas hydrate exploitation multi-physical field evolution simulation test device. The natural gas hydrate exploitation multi-physical field evolution simulation test device comprises a reactor; the reactor is arranged in a temperature control module; the reactor is connected with a liquid supply module, a gas supply module, a back pressure control module, a confining pressure loading module and a data measurement and acquisition module. The invention also discloses a natural gas hydrate exploitation multi-physical field evolution simulation test method. According to the method, an electrical resistance tomography technology is adopted to perform real-time measurement on material contents in sediments especially the saturation of hydrates; real-time measurement is performed on the volume change of the sediments based on the volume change of confining pressure fluid; and the experimental simulation work of temperature field, flow field and displacement field evolutionary processes in hydrate depressurization exploitation can be realized based on experimental data such as temperature, pore pressure and flow rate (gas generation and water generation rate).

A liquid chemical supply system includes a liquid chemical pump having a pump chamber for supplying a liquid chemical and a volume variation member that will vary the volume of the pump chamber, and will intake or discharge the liquid chemical based upon a change in the volume of the pump chamber in accordance with the volume variation member. The system also comprises an operation means for causing the volume variation member to operate, an operation amount detection means for detecting the operation amount of the volume variation member, a displacement control means for performing displacement control so that the volume variation member will be displaced by the operation means when liquid chemical ports that lead to the pump chamber are in the closed state, and a determination means for determining the presence or absence of gas inside the pump chamber based upon the operation amount detection results from the operation amount detection means during displacement control.

The invention discloses a security lithium ion battery positive plate as well as a preparation method thereof. The positive plate is of a multi-layer structure, and comprises the following active substances: lithium manganese phosphate LiMnPO4, nickel-cobalt-manganese ternary material Li(NixCOyMnz)O2 (0x being more than 0 and smaller than or equal to 0.8, y being more than 0 and smaller than or equal to 0.4, and Z being more than or equal to 0 and less than or equal to 0.4, and x+y+z being equal to 1), as well as a high-temperature-resistant nano material, namely A12O3 or SiO2; the mass percentage of the active substances is that the high-temperature resistant A12O3 or SiO2 ceramic material:LiMnPO4:Li(NixCOyMnz)O2 is equal to (1%-5%):(1%-98%): (1%-98%). The preparation method of the positive plate can be in a sandwiched structure, and also the surface of aluminum foil can be coated with lithium manganese phosphate LiMnPO4 and the Nickel-Cobalt-Manganese ternary material Li(NixCOyMnz)O2 by adopting a mechanical mixing mode, and the surface of aluminum foil can be coated with a layer of high-temperature-resistant nano material; the lithium ion battery prepared by the plate with the structure has favorable safety performance; the long cycle performance and the safety performance of the lithium ion battery can be improved obviously by utilizing the opposite crystal cell volume variation characteristics of different active substances in the charge and discharge processes as well as the excellent liquid retention capability to electrolyte by A12O3 or SiO2.

Systems, methods and software products identify emerging issues from textual customer feedback. A message stream of customer feedback is received. The message stream includes a plurality of unstructured text messages from at least one homogeneous source. A time interval is established. The volume of text messages for the time interval is determined to establish a reference volume. The volume of text messages in subsequent time intervals is measured to establish a trend volume. The trend volume is compared to the reference volume to determine a volumetric change. At least one action is initiated in response to a volumetric change above a pre-determined threshold. At least one action is initiated in response to a volumetric change below a pre-determined threshold.

An apparatus is described for extracorporeal blood treatment (1), comprising a treatment unit (2), an extracorporeal blood circuit (8) and a fluid evacuation line (10). The apparatus comprises a control unit (21) connected with a pressure sensor (13, 14) and with a blood pump (9) and configured to move the blood pump (9), generating a variable flow (Q(t)) with a constant component (Qb) and a variable component (Qvar(t)) having a nil average value; the variable flow generates, in the expansion chamber (11, 12), a progression of the pressure that is variable over time (P(t)) with a pressure component (Pvar(t)) oscillating about an average value (Pavg). The control unit receives, from the sensor, a plurality of values (Pj) and calculates the average value of the pressure (Pavg), acquires an estimated value of volume variation (AP) in the expansion chamber (11, 12) connected to the variable flow component (Qvar(t)), calculates, as a function of the pressure values (Pj), an estimated value of pressure variation (AP) in the expansion chamber (11; 12) that is representative of the oscillating pressure component (Pvar(t)) and determines a representative magnitude of a blood level (L) in the expansion chamber (11, 12) as a function of the average value (Pavg) of the pressure (P(t)), of the estimated value of volume variation (AV) and of the estimated pressure variation (AP) in the expansion chamber.

The invention discloses a Li-ion battery cathode and a preparation method thereof. The cathode consists of a flexible collecting-body layer, a carbon-coated silicon layer and a diaphragm bound together. The flexible collecting-body layer is comprised of acetylene black and binding agent; the carbon-coated silicon layer is comprised of carbon-coated silicon, conducting carbon black and binding agent; the diaphragm is a compound membrane composed of porous polyethylene, porous polypropylene or porous polyethylene-polypropylene. Firstly, the carbon-coated silicon layer, the conducting carbon black and the binding agent are made into slurry, and the slurry is coated on the diaphragm surface and dried to achieve the carbon-coated layer; secondly, the slurry containing acetylene black and binding agent is coated on the surface of carbon-coated silicon layer, and a Li-ion battery cathode is achieved after drying. 1mol / L LiPF6 / EC:DMC (volume ratio) is taken as electrolyte and lithium metal is taken as counter electrode to assemble a Li-ion battery with the cathode; a constant-current charging and discharging test is conducted under 0.2mA / cm<2> current density, the first cycling coulomb efficiency reaches 85 percent, and the reversible capacity can reach 1100mAh / g. To the silicon materials with large-volume variation during the charging and discharging process, the cycling stability of the cathode taking acetylene black as the flexible collecting-body layer is much higher compared with the cycling stability of any traditional cathode taking copper foil as collecting-body.

An apparatus that continuously monitors the arterial pressure measured by a pressure sensor in an artery, which pressure is regarded as the reading Pao that approximately corresponds to the aortal pressure. In principle, the arterial pressure can be measured in the aorta, near the aorta, or in the arterial tree. To provide a second reading, the apparatus, via the input channel, continuously monitors the central venous pressure (CVP), which is regarded as the reading PIT that approximately corresponds to the intrathoracic pressure (ITP). The third reading is provided via the input channel as a reading Z which expresses the thoracic compliance. Via known algorithms of the pulse contour analysis, the apparatus calculates the stroke volume variation, using as the determining pressure the transmural pressure which is calculated according to the formulaPtransmural=Pao−f(C)*PITThe cardiac volume responsiveness indicator (CVRI) is calculated for mechanical positive respiration according to the formulaCVRI=k*(SVV / ΔCVP)or for spontaneous breathing according to the formulaCVRI=l−m*(ΔCVP / SVV).

The present invention relates to the non-invasive analysis of materials in both in-vivo and ex-vivo configurations that show reduced sensitivity to sample placement within the sample measurement location. Embodiments of the apparatus make use of paired magnetic configurations and / or paired electrode configurations. Methods are described that compensate for the variation in sample size, and volume to give accurate and repeatable results.

The invention provides a flexible MEMS bubble pressure sensor, and application and a preparation method thereof. The flexible MEMS bubble pressure sensor comprises a microcavity, a pair of measuring electrodes and two micro channels, and utilizes a bubble as a pressure sensitive unit to measure the pressure value and variation for the liquid and the gas environment; when the ambient pressure changes, the volume of the bubble changes too, the environment pressure variation can be obtained by measuring the change of the bubble volume; the change of the bubble volume is measured, and the pair of measuring electrodes are arranged at two end of the bubble and alternating current is applied to the two ends of the bubble to measure the bubble impedance, and the impedance can directly reflect the bubble volume; the bubble is formed through utilization of capillary force, and formation of the bubble is spontaneous, and the bubble retention time can be prolonged through selection of the gas which is difficult to be dissolved in the liquid so that the measuring service life of the sensor can be prolonged; and after formation of the bubble, the surplus volume of the bubble is removed through the negative pressure suction mode so that a bubble with fixed and controllable size can be obtained and is used to measure the pressure. The flexible MEMS bubble pressure sensor has the advantages of being novel in the measurement principle, being simple in manufacturing process, being good in biocompatibility and being smaller in size.

The invention belongs to the field of penetration experimental apparatuses and specifically relates to a multifunctional integrated cap pressing type pressure chamber in a rock coupling penetration test and a test method. The multifunctional integrated cap pressing type pressure chamber comprises a pressure chamber body, a pressure chamber base, a pressure chamber cover, a confining pressure oil inlet, a seepage outlet, a seepage inlet, a pressure chamber lock cap, a hoisting cylinder, an upper pressing head, an upper penetrating plate, a test part, a lower penetrating plate and a lower pressing head, wherein the pressure chamber base is located at the bottom of the pressure chamber; the pressure chamber cover is located at the top of the pressure chamber; the confining pressure oil inlet and the seepage outlet are located at the bottom of the pressure chamber; the seepage inlet is located close to the top of the pressure chamber; the pressure chamber lock cap is located on the outer side of the pressure chamber base and is connected with the pressure chamber base; the hoisting cylinder is arranged at the top of the pressure chamber; the upper pressing head, the upper penetrating plate, the test part, the lower penetrating plate and the lower pressing head are successively arranged in the pressure chamber body; the seepage outlet is successively connected with a cooling water tank and a volume variation gauge. The invention provides a pressure chamber with high safety, degree of automation and multifunction and the test method; complex operation and potential safety hazards are avoided; the pressure chamber is fit for the rock tri-axial coupling penetration test under the coupling effect of temperature-seepage-stress- chemistry (THMC).

Disclosed is a triaxial system for testing particulate matter under substantially dry triaxial load conditions comprising: a housing means fillable with confining fluid for providing confining pressure on a sample of dry particulate matter to be tested, the housing having a channel for introduction therein and removal therefrom of the confining fluid, a load piston sealingly extends for providing a load on the sample, sample mounting means for mounting the sample within the housing, the sample mounting means including a top end platen for mounting at the top and a button end platen for disposition at the bottom of the sample, at least one flexible, impermeable membrane for enclosing the surface of the sample other than its ends, fluid passage means connecting the housing to a volume change sensor for freely delivering confining fluid thereto, and a volume change sensor adapted to measure the volume of confining fluid delivered thereto through the fluid passage means. Also disclosed is a test method for employing the above system to test particulate matter.

The invention relates to a whole-range automatic testing method and a whole-range automatic testing device for gas desorbing speed of a coal sample, which is reasonable in structure, simple and convenient for method, and accurate in measurement, and has visible data and imaging visualization. The device consists of a coal sample tank, a desorbing measuring pipe, a liquid collector and an intelligent module. The device is characterized in that the coal sample tank is connected with an air inlet pipe of the desorbing measuring pipe through a gas-guide tube; gas desorbed from the coal sample enters the desorbing measuring tube, so that liquid in the desorbing measuring tube is correspondingly discharged; the discharged liquid is collected by using the liquid collector; the mass variation in the liquid collector is monitored through an electronic scale in a whole-range manner, and the mass variation and time data are transmitted to the intelligent module and automatically recorded; and the mass variation is automatically converted to the volume variation according to a principle that m is equal to rho*v, namely the volume of the gas desorbed from the coal sample, so that the desorbing speed and the desorbing amount of the gas of the coal sample can be automatically obtained.

The invention discloses a sand layer three-dimensional grouting test device capable of simulating actual working conditions, and a test method thereof. Different crustal stress conditions and different pore water pressures can be simulated according to actual grouting requirements, meanwhile soil samples with different proportions can be made according to test demands to simulate different sand layer characteristics, after grouting, the volume change amount and the axial displacement change of the soil sample in a rubber film can be observed by a volume strain measuring device and an axial displacement measuring device, images obtained before and after the grouting are compared to obtain a deformation value of the middle of the rubber film, and then reasonable grouting pressure and slurryratios under different working conditions and sand layer characteristics are researched according to the obtained volume change amount and the axial displacement change of the soil sample, and the deformation value of the middle of the rubber film, and the mechanical properties of a grouting body are also detected. In addition, a grouting tube of the test device can be changed according to the engineering and experimental needs, the simulation and research of a radial grouting process are achieved, and the mechanical effect of radial grouting is tested.

The invention relates to a civil engineering material volume change test instrument and a test method, in particular to a material volume change test device and test method in civil engineering. According to the test instrument, a sealing rubber ring is arranged in an annular groove, a base is covered with an upper cover, an air intake and exhaust hole is formed in the top end of the upper cover, one end of a probe thermometer is arranged in the upper cover, the other end of the probe thermometer is arranged outside the upper cover, a plastic pipe is arranged on the upper end face of the upper cover and communicated with a cavity, and a graduated glass pipe is communicated with the plastic pipe. The test method comprises the steps that first, a civil engineering material test piece is prepared; second, the volume of the civil engineering test piece before a test is calculated; third, the civil engineering test piece is installed; fourth, liquid is injected into the cavity; fifth, the temperature of the civil engineering test piece is measured in an initial temperature environment; sixth, the temperature of the civil engineering test piece is measured in a measuring temperature environment; seventh, the initial temperature and the measuring temperature of the test piece are measured, and the number of division of the test piece is calibrated; eighth, the volume variation theta Vt of the civil engineering test piece is calculated; ninth, the volume expansion coefficient lambda of the civil engineering test piece is calculated. The civil engineering material volume change test instrument and the test method are used for measuring the volume change situation of the civil engineering material.

The invention relates to a novel swirl dispersing device which mainly includes a rotating spray nozzle, a pump, a container and pipelines. Energy in transmission processes, which is not concerned up to now, are successfully applied in various reaction processes and mass and heat transmission processes intelligently. Rotation is generated by means of kinetic energy of system input or circulating materials and a pressure gradient is formed through a rapid change of a gas temperature or / and a volume change due to absorption. A tornado-like effect can be automatically induced in a gas phase and a swirl-like flow is forcedly formed in a liquid phase so that a mixing effect which is better than that generated from mechanical stirring and a circulator, thereby significantly increasing a mass and heat transmission efficiency in various processes. The novel swirl dispersing device is an important innovation of devices in process intensification, is simple and practical, is low in cost, is energy-saving and high-efficient, has a long effective distance, is good in the effects of mass and heat transmission and dispersion and separation, is wide in application and is strong in universality. The novel swirl dispersing device can solve uniform mass and heat transmission in a gas-phase system, a liquid-phase system, a gas-liquid system, a gas-solid system and a gas-liquid-solid system.

There is disclosed an electrical device including a battery pack, a pressure sensor for measuring a volume change of the battery pack, a voltage sensor in electrical communication with a positive terminal and a negative terminal of the battery pack, a temperature sensor positioned in a cell of the battery pack, and a battery management system. The battery management system includes a controller in electrical communication with the pressure sensor, the voltage sensor, and the temperature sensor, the controller being configured to execute a program stored in the controller to determine a state of charge percentage of the battery pack based on a pressure reading from the pressure sensor, a terminal voltage reading from the voltage sensor, and a temperature reading from the temperature sensor.

A method for determining a volume change of a viscous liquid during a physical or chemical process is disclosed. The volume change of the viscous liquid is determined by confining a layer of a viscous liquid on a portion of a rigid body and then measuring the linear (one dimensional) displacement of a planar surface formed thereon, as the viscous liquid undergoes the physical or chemical process. The surface of the layer of the viscous liquid is planar relative to the rigid body.

A variable displacement pump includes a variable mechanism configured to change a volume-variation rate of each pump chamber by movement of a movable member; a biasing mechanism provided to bias the movable member in a direction that increases the volume-variation rate; at least one reduction-side control oil chamber to which oil is supplied from a discharge portion such that the reduction-side control oil chamber applies force to the movable member in a direction that reduces the volume-variation rate; at least one increase-side control oil chamber to which oil is supplied from the discharge portion such that the increase-side control oil chamber applies force to the movable member in the direction that increases the volume-variation rate; and a control mechanism configured to control a oil quantity which is supplied to each control oil chamber. The total number of the control oil chambers is three or more.

The invention discloses an andalusite self-flow castable, comprising andalusite, fused mullite, silicon carbide, mullite hollow balls, pure calcium aluminate cement, aluminum oxide micro-powder, zirconium silicate, tripolycyanamide, and polycarboxylic acid FOX-8H. The castable further comprises nano calcium carbonate, sodium hexametaphosphate and anti-explosion fiber. According to the andalusite self-flow castable disclosed by the invention, raw materials, such as the high-quality andalusite, silicon carbide, various additives and the like are selected. The andalusite self-flow castable is formed by regulating according to repeated tests and feedback after being used by a manufacturer. As the andalusite is transformed to be the mullite at a high temperature, and the vast majority of residual SiO2 in the andalusite is located in mullite crystals. Under a high temperature state, the SiO2 softened in the mullite crystals can absorb the volume variation of the mullite, which is caused by the temperature variation, so that the structure of the mullite formed by the andalusite has better high-temperature volume stability and thermal shock stability.

A pressure compensator is configured to compensate for volume variations of an insulation medium of a subsea installation. The pressure compensator includes a first bellows chamber having walls and a first bellows part. The first bellows chamber is in flow connection with an insulation medium chamber of the subsea installation, and the walls of the first bellows chamber are configured to separate the insulating medium from surroundings. The first bellows chamber is surrounded by a second bellows chamber having walls and a second bellows part. The second bellows chamber is configured to form a closed intermediate space around the first bellows chamber. The walls of the second bellows chamber are configured to separate at least the bellows parts of the first bellows chamber from the surrounding sea water. The second bellows chamber is further filled with an intermediate medium.