528 results about "Change temperature" patented technology

One disclosed embodiment of the present invention is a device comprising: a housing; electronic components contained within said housing; and a heat absorption medium sealed within said housing for regulating the temperature of said device, wherein said heat absorption medium undergoes a state change at a state change temperature of 36° Celsius or greater, and wherein said device is a medical implant.

Described herein are microprocessors, devices, and methods useful for sweat and / or temperature detection that correlate more closely with changes in amperometric or charge signals related to analyte amount or concentration. The present invention provides methods for the establishment of more accurate sweat and / or temperature thresholds and new methods of compensation, such as correcting for the effects of sweat and rapidly changing temperature on measured analyte values. The present invention reduces the number of skipped or unuseable readings provided by analyte monitoring devices during periods of sweating or changing temperatures. Further, the present invention provides methods for improving the accuracy of reported readings of analyte amount or concentration. In one aspect, the present invention provides passive collection reservoir / sensing devices used in combination with active collection reservoir / sensing devices for detection of sweat and / or temperature related parameters.

A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each "pixel area" of the LCD and storage elements to store video signal data for each pixel, with optically shielded "dead spaces" between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature. In one embodiment of the invention, use of a multi-color LCD with a stepped cavity, producing different thicknesses of LCD for the different wavelengths that pass through it, allows a linear correspondence between the wavelengths passing through the LCD to produce true black, high contrast and CRT-like color rendition. A dichroic mirror arrangement is used to overlap differently colored pixels in the projected image. Use of striped mirrors duplicate pixels, where necessary, eliminating spaces between pixels, creating a continuous image with no apparent stripes or dots. A special venetian-blind type of screen is also disclosed and methods for using the system to view three-dimensional video are also explained.

An automated temperature control system for a barbecue grill or other structure comprises an automated damper assembly coupled to a vent of said grill, which damper assembly opens and closes selectively to adjust the flow passage area of the grill's vent. The system further comprises an operating area temperature probe for communicating the temperature of the operating area of the grill to the automated damper assembly, such that the automated damper assembly may maintain a user-specified target operating temperature by way of affecting combustion rates within the grill. A remote control may also be provided to allow the user to input a desired temperature for the system to obtain and / or to change temperature information for the grill or other structure.

The invention relates to a kind of nano cellulose solid - solid phrase change material and its producing method. Its characteristics are: in non-homogeneous phase system, according to the reactants proportions as polyethylene glycol containing active group at one end or both ends 19.8% - 82.0%, crosslinking agent 0% - 55.1% and nanometer cellulose or its ramification 4.0% - 69.5%, ingraft the polyethylene glycol containing active group at one end or both ends as energy storing function group onto nanometer cellulose or its ramification framework material. The biggest enthalpy of phase change of the nanometer cellulose solid - solid phrase change material of the invention can get to over 110 J / g, the phrase change temperature is 0 - 60 Deg. C, and can keep good solid state before and after the phrase change. It won't occur phrase separation, besides it is non-toxic and harmless, low cost, simple producing technics.

Described herein are microprocessors, devices, and methods useful for sweat and / or temperature detection that correlate more closely with changes in amperometric or charge signals related to analyte amount or concentration. The present invention provides methods for the establishment of more accurate sweat and / or temperature thresholds and new methods of compensation, such as correcting for the effects of sweat and rapidly changing temperature on measured analyte values. The present invention reduces the number of skipped or unuseable readings provided by analyte monitoring devices during periods of sweating or changing temperatures. Further, the present invention provides methods for improving the accuracy of reported readings of analyte amount or concentration. In one aspect, the present invention provides passive collection reservoir / sensing devices used in combination with active collection reservoir / sensing devices for detection of sweat and / or temperature related parameters.

The invention relates to high heat conducting compound phase change energy storage material and the preparing method. The material is compounded by inorganic metal multi-hole consecutive material, phase change energy storage material which is solid-liquid phase change one, and hole sealing material. The preparing method includes the following steps: using inorganic metal multi-hole consecutive material as carrier, solid-liquid phase change energy storage material as functional material; dipping the cleaned carrier into liquid state functional material to make it absorb fully; cooling curing and sealing hole. The material has the features of high heat conducting ratio, easy forming, stable phase change temperature, high chemical stability. The preparing method is economic, convenient, practical, and easy generalization application. The invention can be used in high performance cooling plate making, solar energy storage, waste heat utilizing etc.

The invention discloses a climate time sequence forecasting method based on an empirical mode decomposition and support vector machine, belonging to the field of short-term climate forecasting. The climate time sequence forecasting method comprises the following steps of: firstly, pretreating a time sequence through an empirical mode decomposition method; decomposing the time sequence to a plurality of intrinsic mode function components and a trend component, wherein the components can more accurately reflect changes in the original sequence and keep characters of the time sequence per se; next, carrying out phase space reconstruction on each component through a time sequence forecasting method; respectively establishing different support vector machine regression models for forecasting; and combining the forecasted result of each component to the forecasted result of the original sequence. The invention has the advantages of getting help from the empirical mode decomposition method for smooth processing of the time sequence, reducing interference or coupling information among the sequences on the basis of keeping the characters of the time sequence per se, enabling the accuracy of forecasting to be higher, and especially fitting for treating non-stationary climate time sequences with yearly precipitation or changed temperature.

Driving current value needed is obtained through experiment testing calibration method for semiconductor laser to reach certain output power under different temperatures so as to get coincidence relation between temperature and driving current value. The said coincidence relation in list form is inputted into microprocessor by using keyboard input unit. Based on detected operating temperature of LD, changing driving current compensates variation of output power caused by changing temperature in order to realize stable LD output power. The invention also discloses driving power for semiconductor laser operated based on multiple modes in order to realize the disclosed method. The invention is applicable to diversified areas of semiconductor laser being as light source or pump source.

A method for generating a temperature-compensated timing signal that includes counting, within an update interval, a first number of oscillations of a first micro-electromechanical (MEMS) resonator, a second number of oscillations of a second MEMS resonator and a third number of oscillations of a digitally controlled oscillator (DCO), computing a target DCO count based on the first number and second number of oscillations, computing a loop error signal based on the target DCO count and the third number of oscillations, and modifying an output frequency of a temperature-dependent (DCO) timing signal based on the loop error signal. The duration of the update interval may also be modified based on temperature conditions, and the update interval may also be interrupted and the output frequency immediately adjusted, if a significant temperature change is detected. Thus, dynamic and precise temperature compensation is achieved that accommodates constant, slowly changing, and rapidly changing temperature conditions.

Methods and devices for enhanced ultrasound detection based upon changing temperature and ultrasound reflectivity of a temperature-dependent contrast agent bound to an ultrasound target are disclosed. The methods and devices can be used for enhanced imaging alone or in conjunction with drug delivery, with therapeutic approaches such as hyperthermia or cryotherapy or with other imaging modalities.

The invention discloses a method for preparing graphene oxide modified composite phase-change microcapsules. The method specifically comprises the following steps: preparing a graphene oxide solid from graphite powder, concentrated sulfuric acid, sodium nitrate, potassium permanganate and deionized water; mixing the obtained graphene oxide solid with absolute ethyl alcohol and a silane coupling agent, and performing a reaction so as to obtain a double-bond modified functional graphene oxide solid; uniformly mixing the obtained functional graphene oxide solid with a phase-change material, a reaction monomer, a cross-linking agent, a reactive emulsifier and deionized water, and performing ultrasonic dispersion so as to form an oil-in-water type pre-emulsion; and putting the obtained oil-in-water type pre-emulsion into a hot water bath, continuously stirring, further adding an initiator solution, and performing a heat-preservation reaction, thereby obtaining the graphene oxide modified composite phase-change microcapsules. By adopting the method disclosed by the invention, composite phase-change microcapsules which are high in encapsulation efficiency, stable in property, good in heat conductivity, appropriate in phase-change temperature and relatively high in phase-change latent heat enthalpy can be prepared.

A polylaminated, waterproof, thermally-sensitive decal has a waterproof base that is adhesive on its outer surface and printable on its inner surface; an advertising image printed on the inner surface; a printable covering that overlays the advertising image; a layer of thermochromic ink on the printable covering such that the thermochromic ink is opaque at room temperature but is translucent at increased temperature; and a waterproof layer designed to overlay and protect the thermochromic ink in a moist or wet environment. The decals are designed to fit within the confines of a urinal and to act as a target for the user. The decals are easily applied and removed and are intended for use in moist or wet environments. Also disclosed is a method of advertising. The method includes providing a decal comprising a plastic layer that is adhesive on one surface and printable on its second surface; an advertising image or slogan printed on the second surface, a printable covering that overlays the advertising image, a layer of thermochromic ink such that the thermochromic ink is opaque at room temperature but is translucent at increased temperature in a moist or environment, and a waterproof layer designed to overlay the thermochromic ink; placing the decal in a urinal at a height above the fluid level, but near the fluid level for the higher-temperature urine to contact the decal; and replacing the decal periodically to coincide with new advertising campaigns.

A light valve such as an active matrix LCD between crossed polarizers, utilizing, for instance, individual transistors to control each “pixel area” of the LCD and storage elements to store video signal data for each pixel, with optically shielded “dead spaces” between pixels to eliminate electric field cross-talk and non-information-bearing light bleed-through, is illuminated with a bright independent light source which creates a video image projected via specialized projection optics onto an internal or external screen without distortions, regardless of the angle of projection onto the screen. Use of heat sinks, IR reflective coatings, heat absorbing optics, optional fluid and a thermistor controlled pixel transistor bias voltage injection servo circuit stabilizes image performance, maintaining accurate color and contrast levels as the LCD changes temperature. In one embodiment of the invention, use of a multi-color LCD with a stepped cavity, producing different thicknesses of LCD for the different wavelengths that pass through it, allows a linear correspondence between the wavelengths passing through the LCD to produce true black, high contrast and CRT-like color rendition. A dichroic mirror arrangement is used to overlap differently colored pixels in the projected image. Use of striped mirrors duplicate pixels, where necessary, eliminating spaces between pixels, creating a continuous image with no apparent stripes or dots. A special venetian-blind type of screen is also disclosed and methods for using the system to view three-dimensional video are also explained.

An optical sensor that includes multiple filter cavities for the simultaneous, co-located measurement of pressure and a temperature in a single structure. The sensor may include a single launch fiber bonded to a tube a pre-determined distance from a reflective fiber. The end of the reflective fiber not encased within the tube is enclosed within a cap formed of a material that has a refractive index that changes with changing temperature. Alternatively, a material having a refractive index that changes with changing temperature can be inserted into the tube to take the place of the reflective fiber. Multiple launch fibers may be incorporated within a tube.

The invention discloses a method to prepare a multi-temperature refrigerator with variable evaporating temperature. It adopts single compressor, condenser, gas-liquid separator, condensation vaporizer, throttle valve, vaporizer and three-channel flow distributing valve as components. The refrigerating medium is polyatomic unazeotropic mixed refrigerating medium. Based on the existed self-overlapping cycle, add a vaporizer used for high-temperature or change-temperature chambers and one or two three-channel flow distributing valves. According to the property of polyatomic unazeotropic mixed substance, adjust the component of mixed refrigerating medium in vaporizer to provide two or three different evaporating temperatures under the same evaporating pressure. One of the evaporating temperatures is adjustable on requirements of users. Applicable polyatomic unazeotropic mixed refrigerating medium is composed of low-boiling and high-boiling substance and selects one or more from them as component refrigerating medium. The method has merits of convenient control and energy-saving operation.

The invention relates to a ginger large-small row dual-bud cultivation method which comprises the following cultivation steps of: carefully selecting ginger seeds; sterilizing a ginger cellar; plowing in autumn; soaking seeds; accelerating germination by changing temperature; building a ground awning, ditching to prepare sowing; carrying out dual-bud sowing; managing in a budding period; managing in a seedling period; managing in a vigorous growth period; and harvesting ripe gingers. The ginger large-small row dual-bud cultivation method disclosed by the invention increases the number of strains by 1000-2000 per mu, increases the number of buds by 7000-8000 per mu and utilizes a land of one mu as a land of two mu, thereby greatly increasing the ginger output; and the ginger large-small row dual-bud cultivation method disclosed by the invention is favorable to the growth and development of gingers because the border row of large rows is high in advantage and small rows achieve shading and stress resistance and has the advantages of sufficiency in fertilizer, easiness for nutrition in-place, no seed and seedling burning, appropriate regulation and control measure, more branch, strong growth and fast enlargement.

The invention relates to a novel liquid injection, infiltration and pre-charging process for lithium ion batteries. The process comprises the following steps: (S1) carrying out vacuum operation on a lithium ion battery before liquid injection, injecting a predetermined amount of electrolyte, and filling a proper amount of film forming additive gas into the battery after injection of electrolyte is finished; (S2) employing the manner of cyclical fluctuation negative pressure infiltration, wherein, fluctuation of negative pressure is expressed with a waveform function instead of a simple first grade linear function; (S3) carrying out formation under the conditions of changing negative pressure and changing temperature, wherein, the negative pressure and temperature both increase gradiently with time, a charging current is not constant and varies in a manner of small gradient increase. The invention enables a predetermined amount of electrolyte to be rapidly absorbed by anode and cathode materials and diaphragms of the battery, and absorption time is short while full absorption is realized, thereby improving the utilization rate of the electrolyte and shortening time for liquid injection; addition of a proper amount of film forming additive gas is beneficial for the formation of SEI membranes and enables inreversible capacity loss of the battery in initial charge to be reduced; the method of pre-charging brought forward in the invention enables uniform and stable SEI membranes to form on the surface of electrodes, thereby improving safety performance and electrochemical performance of lithium ion batteries; the process is simple and is easy to control, investment cost for equipment used in the process is low, and the process is easy to realize.

The invention discloses a laser gyro temperature compensation and control device and an application. The device comprises a laser gyro cavity, a metal shell, a temperature control device, a self-adaptive temperature control circuit and a temperature sensor. The device is characterized in that the temperature sensor and the temperature control device are put on the laser gyro cavity or the metal shell. The invention also relates to the application of the temperature control device in laser gyro temperature compensation. The invention overcomes the overproof quasi-zero of laser gyro temperature, has obvious self-adaptive temperature compensation effect, solves the problems of project applications when a laser gyro is in bad working environments such as high temperature, low temperature, suddenly changed temperature, and the like and has the advantages of compact and reliable structure, stable working performance, simple operation, and the like.

The invention relates to a temperature-controlled consolidation pressure chamber system used in thermal consolidation test of a saturated soil cylinder sample. Side walls (6) of the temperature-controlled consolidation pressure chamber are of empty-cavity structures made of stainless steel; cylinder thermal plates (8) are embedded in the side walls; the two ends of resistance wires of the cylinder thermal plates (8) of the pressure chamber are connected with a temperature controller (18); an electric couple (1) is arranged at the top cap of the pressure chamber, one end of the electric couple is arranged in the pressure chamber which is full of water and the output end is connected with the temperature controller. Sample water drain pipes, pipes for measuring pore water pressure and ambient pressure connection pipes are made of stainless steel and the middle sections take a shape of a spiral arranged in a water receptacle with a constant temperature; the sample drain pipe coming out of the water receptacle is connected with a pipe for detecting leakage of sample; the pipes for measuring pore water pressure are connected with a pore water pressure measuring system; the ambient pressure connection pipes are connected with a pressure regulating system. The system can satisfy the requirements of the saturated soil sample consolidation test under the action of loading at the changing temperature, thus the system can test the thermal consolidation deformation of the saturated soil sample accurately.

Provided is a natural convection-driven polymerase chain reaction (PCR) apparatus and method, which can periodically change temperature of a sample to make a natural convection-driven flow in a loop-shaped channel on a disposable polymer chip and contacting heating metal members maintained at different temperatures with channels. The natural convection-driven PCR apparatus includes: a polymer chip having a plurality of channels connected together to form a loop-shaped microchannel, a sample being filled inside the channels; a plurality of heating metal members contacting the loop-shaped microchannel of the polymer chip and transferring heat; a temperature controller connected to the heating metal members to maintain the heating metal members at different temperatures; a plurality of heaters connected to the heating metal members and the temperature controller to supply heat to the heating metal members; and temperature sensors connected to the heating metal members and the temperature controller.

The invention discloses a method of in situ growth of a nano titanium dioxide protective layer on a wood surface, and relates to a preparation method of a wood protective layer. The invention solves the problems of complex process, wasteful raw materials and high cost in current wood protective method. The method of the invention comprises the following steps: 1. immersing wood into titanium salt alcoholic solution, and carrying out hydro-thermal reaction in a sealed reactor; 2. adding SDS solution into the reactor and then reacting; and 3. drying the wood after the above processing. The method of the invention utilizes a low-temperature hydro-thermal cosolvent method, and has simple process, non-volatile components, high usage of raw materials and low cost; the reaction is carried out in the sealed reactor; subsequent processing does not need high temperature annealing process; the obtained wood keeps original natural texture, simultaneously has favorable hydrophobicity, and can be applied in the environments with high humidity and greatly changed temperature and humidity. The method of the invention effectively applies the titanium dioxide nano functional materials to the wood.

The invention relates to a method and a device for measuring and representing the compression coefficient and the expansion coefficient of a material on line. A temperature sensor, a pressure sensor and an ultrasonic probe are respectively arranged on one cross section of a closed material cavity of a pressure-volume-temperature (PVT) calibration device and are used for testing the volume, the temperature T, the pressure P and ultrasonic signals of the closed material synchronously. The sound velocity of the ultrasonic wave, which passes through the material with the thickness l in the material cavity is c=l / delta t within the propagation time delta t; the temperature is maintained constant, and the pressure measurement volume is changed, so that a constant temperature compression coefficient can be obtained; the pressure is maintained constant, and the temperature measurement volume is changed, so that a constant pressure expansion coefficient can be obtained; a material specific volume, a compression coefficient or expansion coefficient and sound velocity correspondence curve is established, and a corresponding equation is obtained by regression; or the compression coefficient (alpha) and the expansion coefficient (beta) can be obtained by the specific volume curve or the state equation. At certain temperature and under certain pressure, the propagation velocity of the ultrasonic wave in the material can be tested on line, and the compression coefficient and the expansion coefficient at the temperature and under the pressure can be obtained by the established corresponding curve or corresponding equation. The method has the advantages of being lossless and being easy in online representation, and the device is simple and convenient to install.

Systems for providing a temperature detecting circuit includes seven transistors and six resistors. In a preferred embodiment, one of the seven transistors is configured as an enabling element and the others form two comparators. The six resistors form three voltage dividers with output varying based upon changing temperature. Two comparators are included that sense the difference between the outputs of two of the voltage dividers, and generate a corresponding 2-bit detection signal by which the refresh period is determined. Other systems and methods are also provided.

The invention relates to a valve for opening and closing a channel (3) of a microfluidic system, respectively. According to the invention, the valve comprises an actuation medium (2) that undergoes a volume change with changing temperature; and a heater arrangement (5) for generating a temperature gradient in the actuation medium (2) with respect to the actuation medium's (2) distance relative to the channel (3); wherein due to an expansion or a contraction of the actuation medium (2) the channel (3) is closed or opened, respectively. When the heater arrangement (5) is activated in such a way that a higher temperature is generated in the actuation medium (2) which is nearer to the channel (3) and a lower temperature is generated in the actuation medium (2) which is further away from the channel (3) the valve can be closed and vice versa. Accordingly, such a valve for a microfluidic system is provided which can be reliably actuated during a long time of use.

A method of forming a semiconductor device having a quantum well structure, comprises the steps of: (a) forming a well film at a first temperature, the well film being made of a III-V nitride semiconductor containing nitrogen, indium and gallium; (b) forming a first barrier film on the well film, the first barrier film being made of a III-V nitride semiconductor containing nitrogen, indium and gallium, and an indium composition of the first barrier film being smaller than that of the well film; (c) changing temperature without forming a semiconductor film; and (d) forming a second barrier film at a second temperature higher than the first temperature, the second barrier film being made of a III-V nitride semiconductor on the first barrier film, the first barrier film being formed at a third temperature, the third temperature being equal to or higher than the first temperature, and the third temperature being lower than the second temperature.

The invention provides a chromatographic instrument calibration device. A closed circulating space is formed by an upper cylinder body, a lower cylinder body and an external pipeline, and oil and gasare fully mixed in the closed circulating space under the action of a circulation pump to prepare standard insulating oil. The device uses a temperature controller to simulate an operating environmentof the insulating oil in actual equipment and realizes the calibration of an on-line chromatographic instrument under different environments by changing temperature and other parameters. The lower cylinder body is provided with an oil sample sampling port, which can realize off-line sampling for chromatograph detection in a laboratory. In addition, the whole calibration device is arranged on a movable cart, so that the device has mobility and is more convenient to use. The chromatographic instrument calibration device can simultaneously detect and evaluate technical indexes such as test accuracy, test response time and the like of a plurality of on-line chromatographic instruments; and the oil sample can be recycled so as to save cost.