279results about How to "Improve thermal effect" patented technology

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

This invention relates to the working end of a medical instrument that applies energy to tissue. In one embodiment, the instrument has a microfluidic tissue-engaging surface fabricated by soft lithography means together with optional superlattice cooling means that allows for very precise control of energy application, for example in neurosurgery applications. The tissue-engaging surface can eject a high-heat content vapor into the engaged tissue for treating tissue, while the superlattice cooling structure can prevent collateral thermal damage. Also, the superlattice cooling structure can be used to localize heat at a selected depth in tissue and prevent surface ablation. Also, the superlattice cooling structure can be used to prevent tissue sticking to a thermal energy delivery surface. In another embodiment, the tissue-engaging surface can be used in a jaw structure for sealing tissue together with hydrojet means for transecting the tissue.

This invention relates to a novel surgical device scalable to small dimensions for thermally-mediated treatments or thermoplasties of targeted tissue volumes. An exemplary embodiment is adapted for fusing, sealing or welding tissue. The instruments and techniques utilize a thermal energy delivery means, for example an electrical energy source, to instantly elevate the temperature of a biocompatible fluid media within an electrically insulated instrument portion. The altered media which may then be a gas is characterized by a (i) a high heat content, and (ii) a high exit velocity from the working end, both of which characteristics are controlled to hydrate tissue and at the same time denature proteins to fuse, seal, weld or cause any other thermally-mediated treatment of an engaged tissue volume—while causing limited collateral thermal damage and while totally eliminating electrical current flow the engaged tissue volume. The system can further utilize a piezoelectric material that carried fluid channels to apply compressive forces to the fluid eject the fluid from the working end of make it require less electrical energy to convert it to a gas.

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

This invention relates to an electro-plastic rolling method and a device for deformed Mg alloy thin plates, strips and wires including: inducing the deformed Mg alloy plates, strips and wires in single-way instant high energy continuous pulse current directly in the process of rolling, the current passes through a pair of electric contact devices with their distance adjustable to apply on the moving Mg materials, and the roller is the negative in it, necessary cooling and lubrication measures should be taken when rolling, this time, the rolling deformation ability of the Mg material is increased greatly and the resistance is reduced to avoid high temperature oxidation and poor accuracy in size.

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.

The invention relates to a light source system and application thereof. The light source system comprises a laser, an interference filter, a first condenser lens, a light conversion device, a reflector, a second condenser lens, a dodging member, a radiating member and an actuator. The light conversion device comprises a transparent substrate, a wavelength conversion layer and a filter layer; the transparent substrate is rotatable; the filter layer is laminated on the transparent substrate and the filter layer is set around the edge of the transparent substrate for a round to form an annular structure; the wavelength conversion layer is laminated on the transparent substrate and the wavelength conversion layer is set in the middle of the transparent substrate; the radiating member is fixedly connected with the transparent substrate at the side far from the wavelength conversion layer; the actuator and the radiating member are fixedly connected; and the actuator can drive the transparent substrate to rotate through the radiating member. The projection system has the advantages of good heat radiation performance, therefore, the heat effect of the light conversion device in the fluorescence transition process can be improved, and the brightness of the light source system can be raised.

The invention discloses a novel large-current silicon on insulator lateral insulated gate bipolar transistor. According to the semiconductor, a buried oxide is arranged on a P-type substrate, an N-type drift region is arranged on the buried oxide, a P-type body region and an N-type buffer region are arranged on the N-type drift region, the N-type buffer region is internally provided with a P-type collector region, a collector metal is connected onto the P-type collector region, a field oxygen layer is arranged above the N-type drift region, the P-type body region is internally provided with a P-type emitter region, an N-type emitter region is arranged around, an emitter metal is connected onto the N-type emitter region and the P-type emitter region, a gate oxide is arranged between the field oxygen layer and the N-type emitter region, a first polysilicon layer is arranged on the surface of the gate oxide, a first gate metal is connected onto the surface of the first polysilicon layer, a longitudinal groove is arranged outside the P-type body region, the longitudinal groove is internally provided with silicon dioxide and a second polysilicon layer coated by other medium, and a second gate metal is connected onto the second polysilicon layer.

The invention relates to nutritional meal replacement powder for weight losing, being prepared from the following components in parts by weight: 580-630 parts of whole milk powder, 195-245 parts of inulin, 191-246 parts of resistant dextrin, 160-210 parts of crystalline fructose, 110-130 parts of konjak flour, 45-60 parts of whey protein powder, 50-70 parts of collagen powder, 18-32 parts of calcium carbonate, 10-25 parts of concentrated vanilla, 8-20 parts of milk flavour, 10-25 parts of vitamin premix compound, 1-6 parts of table salt, 1-6 parts of zinc lactate and 1-6 parts of iron lactate. The nutritional meal replacement powder is rich in nutrition, contains multiple dietary fibers, and can increase satiety.

Battery module includes the following elements: a plurality of batteries; and metallic or ceramic battery case that includes a plurality of holding parts holding corresponding batteries. Heat insulating member is disposed between wall surface of each of holding parts and corresponding one of batteries. Heat insulating member is disposed in a part between wall surface of holding part and battery so that air layer is formed between wall surface and battery.

A surgical instrument for thermally-mediated therapies in targeted tissue volumes and for causing thermal effects in polymer tissue-contacting members. In one embodiment, the instrument has a working end with an interior chamber that is supplied with a biocompatible liquid. An energy source causes a liquid-to-vapor phase change within the interior of the instrument. The vapor phase media then is ejected from the working surface of the instrument, and a controlled vapor-to-liquid phase change in an interface with tissue applies thermal energy substantially equal to the heat of vaporization to ablate tissue. The vapor-to-liquid phase transitions, or internal energy releases, can be provided about thin-film flexible structures for engaging body lumens and cavities. An exemplary embodiment can be used for shrinking, sealing, welding or creating lesions in tissue—while causing limited collateral thermal damage and while totally eliminating electrical current flow in the engaged tissue.

A radar / infrared compatible invisible coating resistant to 600 DEG C is disclosed. The invisible coating is on the surface of a metal substrate, and includes an adhesive layer, a 8YSZ-Al2O3 ceramic bottom layer, a high-temperature resistance coating, a 8YSZ isolating layer and a high-temperature conductor coating in order from bottom to top form the surface of the metal substrate. The high-temperature resistance coating and the high-temperature conductor coating are in paster forms, and pasters are arranged periodically. A preparing method of the invisible coating is also disclosed. The structure of the invisible coating has a radar / infrared compatible stealth function. A resistance type periodic structure is introduced so that the invisible coating has a good wave absorbing function, anda defect that traditional wave absorbing coatings need absorbents so as to cause unsatisfied wave absorbing performance, big influences on processes and instable performance is solved. A conductor periodic structure is introduced to the surface layer, and the radar / infrared compatible stealth function is achieved by utilizing a high reflectivity characteristic for the infrared waveband and a hightransmittance characteristic for the radar waveband.

This invention is related to a microfabricated microelectromechanical systems (a.k.a. MEMS) silicon thermal mass flow sensor integrated with a micromachined thermopile temperature sensor as a flow inception detection sensor. The micromachined thermopile sensor is used to detect the inception of mass flow and therefore to trigger the operation of mass flow sensor from its hibernating mode. By this method, the battery-operated flow speed measuring apparatus can save great deal of electricity and significantly extend the life span of battery. A new design of micromachined thermopile sensor with serpentine shape is used to reduce the complexity of microfabrication process and to increase the flexibility and options for material selection. In order to enhance the sensitivity of the thermopile temperature sensor, a method to maximize the quantity of the junctions is provided as well.

The invention discloses a method for extracting betulin from birch barks, comprising the following steps: firstly, crushed birch barks are added into an ethanol water solution, undergo reflux extraction under auxiliary processing of ultrasonic waves, and then are filtrated for removal of residue, and an extract is obtained; secondly, solid powder is separated out after decompression and concentration of the extract, and then dried to the constant weight so as to obtain betulin coarse products; and thirdly, the betulin coarse products are added into an organic solvent, undergo ultrasonic treatment and then stand, crystals are separated out, and the betulin is obtained after the separated crystals are dried to the constant weight. The method has a simple operation flow, short extraction time, low production cost and high safety, and provides a better method and a better platform for further development and utilization of natural products.

The invention relates to an oxide insulating layer which is capable of being used to discover a material which reduces the power of a phase change memory and an improvement on the structure of an unit device and an implementation method, and belongs to the field of microelectronics. The invention is characterized in that the oxide insulating layer is added between a bottom heating W electrode and a chalcogenide compound thin film layer, and the thickness of the insulating layer is controlled below 10nm. The optional materials of the oxide insulating layer comprise TiO2 and the like. The improvement of the unit device is achieved through that after various needed thin films are deposited on a substrate, a phase change operation unit in micron is obtained through a micro-nano processing technology, and an upper electrode and a lower electrode which are capable of being used to test the performance are led. Because the oxide insulating layer has excellent thermal stability and thermal conduction which is far lower than a bottom heating W electrode, is compatible with a CMOS standard manufacturing technology, increases marked effect of the unit thermal effect of the device, and the purpose of effectively reducing the power of the unit is achieved.

The related fast-forming laser diode energy source comprises: a source LD, a column mirror group included a fast-axis and slow-axis collimation column mirror with bus-bar vertically, a beam expander to expand the slow-axis parallel beam to let beam diameter at two directions as same cycle, and a frame or shell. Besides, it also contains a direction indicator, a beam-joining device, a coupled expander, a dynamic focus module, and an x-axis / y-axis scanning mirror. This invention has small size and well reliability.

Systems and methods for treating tissue by concentrating a laser emission to at least one depth at a fluence sufficient to create an ablation volume in at least a portion of the target tissue and controlling pulse width within the picosecond regime to provide a desired mechanical pressure in the form of shock waves and / or pressure waves.

The invention discloses a polymer dispersed liquid crystal three steady-state membrane and a preparation method thereof. The polymer dispersed liquid crystal three steady-state membrane comprises two layers of flexible transparent conductive thin membranes and a polymer dispersed liquid crystal layer arranged between the flexible transparent conductive thin membranes. Transparent conductive thin membrane layer electrodes are arranged on the inner surfaces of the flexible transparent conductive thin membranes. The polymer dispersed liquid crystal layer is mainly prepared by mixing a prepolymer, a chiral double-frequency liquid crystal material and a gasket material uniformly and adequately; and therefore, the polymer dispersed liquid crystal membrane made of the polymer dispersed liquid crystal layer has the advantages of three steady states of scattering Off state, semi-transparent On state and visible light scattering and infrared Bragg reflection Off state.

Disclosed is a construction & engineering material containing a microencapsulated phase change material, wherein one or more components of construction & engineering materials are selected from a group of construction & engineering materials such as sand, cement, gravel, admixture, gypsum, aggregate, plaster, fiber, and magnesium, and the PCM microcapsules are attached to outer surfaces of the selected one or more components of construction & engineering materials.

The invention provides a method for precisely processing sapphire through double-laser beam sequence scanning. The method comprises the following steps: installing a sapphire workpiece and a laser processing head, outputting a nanosecond pulse laser beam, and carrying out scanning motion according to the to-be-machined track once; then closing the nanosecond pulse laser beam, starting an ultrasonic generator for carrying out chemical corrosion; then outputting a picosecond pulse laser beam for carrying out scanning motion once, and fastly removing a thin-layer material; repeatedly carrying out the steps until the depths of holes or grooves in the surface of the sapphire workpiece meet the processing requirement; and finally, carrying out ultrasonic abrasive polishing to the surface of the sapphire workpiece by adopting an ultrasonic driven abrasive grain polishing solution. The sequence combined processing effects of four precise processing technologies including nanosecond laser thermal treatment, ultrasonic chemical corrosion pretreatment, picoseconds laser precision processing and ultrasonic abrasive grain polishing aftertreatment are combined, the power demand of a needed picoseconds laser device can be effectively reduced under the requirement of equal etching processing efficiency, and the picosecond laser processing time and equipment cost can be shortened and lowered.

The invention discloses a temperature difference generating hot water system with a solar energy photo-thermal semiconductor, which comprises a heat collector, a storage battery, a battery charge controller, an inverter, a heat storage water tank and a hot water controller, wherein the heat collector comprises a tempered glass protective cover, flat vacuum glass, a semiconductor temperature difference generating module, a cooling water tank with a heat dissipation water tank cover, and a polyurethane foaming insulating layer which are respectively arranged in a stainless steel protective casing. The invention has the advantages that solar energy is directly converted into electric energy through semiconductor materials by coating a layer of sunlight selective absorption coating (ZL200920238076.2) on the heat surface of the semiconductor temperature difference generating module; cooling water is simultaneously heated; the flat vacuum glass is taken as a heat insulating device so as to enhance the heat collection efficiency, reduce the heat loss and simultaneously enhance the heat effect of the semiconductor temperature difference generating module; the heat collection efficiency and the heat preservation effect can be increased; the semiconductor temperature difference generating module can generate electric energy throughout in a constant temperature difference state; and the generating efficiency is enhanced.

The invention discloses a magnetic refrigeration cooling device and control system which comprises a magnetic refrigeration system, a cooling system and a driving control system. The magnetic refrigeration system comprises a magnetic field system, a magnetic working medium device, a refrigeration end and a heating end, a magnetic working medium is placed into the magnetic field system, the magnetic torque of the magnetic working medium is neat or disordered along with change of a magnetic field direction, the cooling system comprises a pump, a disk seamless cooling pipeline, a disk seamless heat absorption pipeline, a draft tube and cooling liquid, and the cooling liquid circulates in the pipeline in a reciprocating manner under driving of the pump. By the aid of a single-chip microcomputer in the adaptive on-off driving control system for an intelligent temperature control switch, on one hand, periodic change of the magnetic field system is controlled, on the other hand, the pump is controlled to drive the cooling liquid to periodically and circularly flow, the cooling efficiency of the system is higher than that of a traditional single cooling system by the aid of magnetic refrigeration technology, magnetic leakage can be effectively decreased, a cooled part can be intelligently cooled, energy is saved, environments are protected, pollution is avoided, and noise is quite low.

The invention provides a preparation method of natural plant dye. The method comprises the first step of cleaning, the second step of mixing, the third step of ultrasonic extraction, the fourth step of distillation and the fifth step of filtration. According to the preparation method of the natural plant dye, by means of multi-frequency ultrasonic extraction operation, the mechanical effect, the cavitation effect and the thermal effect of the dye can be greatly enhanced; compared with single-frequency acoustic extraction, the extraction time can be shortened by 40% to 60%, the extraction temperature can be declined by 15 DEG C to 20 DEG C, damage to natural pigments and effective components caused by the temperature is reduced, therefore, the extraction rate is increased, and the quality is improved; due to the fact that optimum induction frequencies of different plant cells are different, according to the preparation method of the natural plant dye, different frequencies can be appropriately adjusted and combined, coextraction of various plants with similar hues can be achieved, the energy sources are saved, and the efficiency is improved. The prepared plant dye is stronger in adhesion effect and pure and elegant in color, the antibacterial and anti-virus effects are achieved, and the plane dye is safe, harmless, natural and environmentally friendly.

The invention discloses a separating system and a separating method for residual monometers in a polymer viscous liquid. The separating system comprises a gas supply device, a gas heating device, a separating device and a vacuumizing device, wherein the separating device comprises a reactor / a material filling tank, a condenser and a storage tank, wherein the reactor / the material filling tank is provided with a stirrer, and a gas dispersing pipe is mounted at the bottom of the reactor / the material filling tank. Gas provided by the gas supply device enters the gas dispersing pipe which is mounted at the bottom of the reactor / the material filling tank after passing through a gas heating device; the gas is blown to the polymer viscous liquid through the gas dispersing pipe, so that the viscous liquid is bubbled and the residual monomers are evaporated; evaporated residual monomers and the gas enter the condenser together under the action of vacuum, the residual monomers and the gas are separated by condensing; the residual monomers enter the storage tank and are stored in the storage tank. According to the separating system and the separating method, equipment is simple; process parameters are easy to control; the energy consumption is low; the processing amount is large. The separating system and the separating method can be used for separating the residual monomers from the polymer viscous liquid.

The invention discloses a hydraulic damping type wind heating system. The hydraulic damping type wind heating system comprises a wind energy converting device, a heating heat preservation system, a control system and an assisting system. The wind energy converting device mainly comprises a wind turbine, a variable pump, a double pump unit, an oil tank, an overflow valve and the like, wherein the wind turbine is connected with the variable pump to suck oil from the oil tank, and then the hydraulic oil passes through the double pump unit and reaches the heating heat preservation system; the heating heat preservation system mainly comprises a throttle valve, heat exchanging tubes, an electric heating device, a heat preservation water tank, a check valve, a water inlet pump, a heat dissipater and the like. Oil output from the wind energy converting device generates heat after passing through the thin wall small holes of the throttle valve; cold water exchanges heat with the heat exchanging tubes inside the heat preservation water tank to become hot water and then to reach the heat dissipater; the control system achieves monitoring on the system to timely adjust the working status of relevant components and parts, thereby achieving stability of system operations. The hydraulic damping type wind heating device improves the utilization rate of wind energy and meets the requirements on heating timeliness and stability according to the throttling effects of fluid and the principles of tribology.

The invention discloses a two-dimensional vertical cavity surface emitting laser array. The two-dimensional vertical cavity surface emitting laser array comprises a surface electrode and n unit laser devices, wherein n is an integer which is larger than 3; the unit laser devices are distributed on the surface electrode; the unit laser devices comprise (n-2) <2> central area unit laser devices, (n-1) * 2 horizontal peripheral unit laser devices, (n-2) * 2 vertical peripheral unit laser devices and two edge unit laser devices; the active area diameter of every unit laser device is d and the light aperture of every unit laser device is r. According to the two-dimensional vertical cavity surface emitting laser array, the arrangement mode which is similar to a rhombus is adopted and accordingly the thermal crosstalk is low and the unit density is large in the same surface electrode area, the temperatures of the unit laser devices are uniformly distributed at different coupling positions, the integral temperature of the array is low, the thermal effect of a high power vertical cavity surface emitting laser array is significantly improved, the output performance of the devices is improved, and the application fields of lasers are extended.

An air heater is provided for use in buildings or other structures. The air heater uses infrared lamps to generate a temperature rise in a forced air chamber that contains several infrared lamps, in which two ends of the chamber act as an inlet and an outlet, and in which the chamber has a highly reflective interior surface that reflects the light being emitted by the lamps to multiply the thermal effect of the infrared light sources. An alternative embodiment uses a closed chamber, in which the temperature rise causes the unit to act as a detonator.

The invention discloses an infrared-ultraviolet composite therapeutic apparatus, which is used for treating skin diseases through the combined action of infrared rays and ultraviolet rays. The infrared-ultraviolet composite therapeutic apparatus comprises an infrared and ultraviolet double light source, a lamp cover, a movable supporting rod, a power supply and a control platform, wherein the control platform comprises a double-switch control system, a temperature control system and a time control system. The infrared-ultraviolet composite therapeutic apparatus can irradiate the skin of each part of the human body and effectively treat various skin diseases, such as leucoderma and the like; and the infrared-ultraviolet composite therapeutic apparatus has the advantages of simpleness, safety and reliability in operation, obvious treatment effect, easiness in being accepted by patients, and the like.

The invention discloses a method for producing nano calcium carbonate by microwave drying. The method is carried out according to the following steps: (1) preparing Ca(OH)2 raw refined slurry; (2) preparing boiled calcium carbonate slurry; (3) preparing an activated calcium carbonate filter cake; (4) pelletizing; (5) carrying out microwave drying; and (6) crushing and sieving to prepare a nano calcium carbonate product. A device for producing nano calcium carbonate by microwave drying comprises a pelletizer, a feeding hopper, a conveyor belt, a transmission mechanism, a tunnel type microwave drying box, a microwave generator, a discharge hopper and a moisture removal mechanism. The method and the device are adopted to produce nano calcium carbonate, so that time of drying operation in a production process of the nano calcium carbonate can be greatly shortened, the energy consumption is lowered, the agglomeration of the nano calcium carbonate is weakened and the dispersion is improved, and thus, the quality of the nano calcium carbonate is improved; the prepared nano calcium carbonate has the advantages of small grain size, low agglomeration strength, a great specific surface area, small hardness and good dispersion; and moreover, the heating time is short, so that the whiteness of the nano calcium carbonate can be improved.