89results about How to "Low volume" patented technology

A multi-purpose device mechanism for sensing and control of changes in brain state includes a shaft portion and extendible elements structured for insertion into target tissue of the brain of a subject patient, cooling means configured to operatively apply cooling therapy to the target tissue, stimulation means having at least one electrical contact structured to operatively apply electrical stimulation therapy to the target tissue, sensing means including at least one sensor monitoring a biological signal of the subject patient, control means responsive to the sensing means wherein the control means is structured to, in response to signals from the sensing means that indicate the presence of a pre-determined physiological condition or occurrence of an undesirable state change, automatically cause the cooling means and / or the stimulation means to initiate or terminate the cooling therapy and / or the electrical stimulation therapy respectively and an energy source for powering the various components of the multi-purpose device mechanism. A modified embodiment includes a least one spiral conduit and at least one return conduit for cycling coolant or refrigerant to and from the shaft portion and an external reservoir. Another modified embodiment includes pressurizing means for extending at least one extendable tube into brain tissue surrounding the shaft portion.

Embodiments of the invention generally provide for flow battery cells and systems containing a plurality of flow battery cells, and methods for improving metal plating within the flow battery cell, such as by flowing and exposing the catholyte to various types of cathodes. In one embodiment, a flow battery cell is provided which includes a cathodic half cell and an anodic half cell separated by an electrolyte membrane, wherein the cathodic half cell contains a plurality of cathodic wires extending perpendicular or substantially perpendicular to and within the catholyte pathway and in contact with the catholyte, and each of the cathodic wires extends parallel or substantially parallel to each other. In some examples, the plurality of cathodic wires may have at least two arrays of cathodic wires, each array contains at least one row of cathodic wires, and each row extends along the catholyte pathway.

A body fluid sampling or fluid delivery system includes a polymeric support and an array of polymeric microneedles coupled to the support, each of a microneedle having a height of 500 to 2000 μm and a tapering angle of 60 to 90°. A plurality of polymeric microchannels are provided with being associated with a microneedle. The plurality of polymeric microchannels are integrally formed with the array of polymeric microneedles without bonding. At least one polymeric reservoir is coupled to the plurality of microchannels.

In a method and control apparatus for tracking a contrast agent using an imaging medical device a test bolus of a contrast agent is initially injected into an examination subject, followed by an injection of a main bolus at a time interval of .DELTA.ti. The arrival of the test bolus in the observation volume is chronologically determined by periodically repeated survey measurements. An image data measurement is started at a time interval .DELTA.tm subsequent to the detection of the test bolus, this time interval .DELTA.tm being defined according to the prescribed time interval .DELTA.ti.

Compositions and method are provided, for the treatment of pain, e.g. acute breakthrough pain, by means of a systemic, non-invasive mode of administration. Specifically, the invention relates to a sublingual presentation of an opioid analgesic, such as fentanyl, or its salts, in amounts that are sufficient to treat the pain.

The present invention relates to methods of treating subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing a first aqueous composition and a second aqueous composition in a subterranean formation. The placing includes injecting the first aqueous composition through a tubular passage in a wellbore. The placing also includes injecting the second aqueous composition through an annular passage in the wellbore.

A disposable device is provided for culturing and / or packaging and transporting ready-to-use viable cells cultured on membranes, gels or micro porous substrata. The device includes a housing base defining an interior for culturing cells. The membrane to be used for culturing the cells is placed inside the housing base and fixed with a ring. The base is closed by a lid, which is designed to protect the underlying cells during transport as well as minimize the volume of media used during culture, as well as transport. Media leakage is prevented by the silicon gasket as well as the snaps provided in the device.

The present invention is related to a process for the production of high quality fatty acids and rosin acids and their mixtures from crude tall oil by means of short path distillation of saponified crude tall oil, acidulation and fractionation by distillation.

A method for preparing a concentrated, immunoglobulin composition for treating subjects vaccinated against or infected with a pathogenic microorganism, comprising: (a) selecting a population of individuals previously vaccinated against one or more antigens associated with the pathogenic microorganism; (b) determining the level of specific antibodies immunoreactive with the pathogenic microorganism in a blood or blood component of the individuals to identify very high titre individuals having a very high titre of the specific antibodies; (c) combining blood or blood components comprising immunoglobulins from the very high titre individuals; and (d) purifying and / or concentrating the product of step (c), thereby obtaining a concentrated immunoglobulin composition. Also disclosed is a concentrated immunoglobulin composition comprising specific antibodies immunoreactive with a pathogenic microorganism, characterized in that the titre of specific antibodies of the composition is at least 5 times higher than the average titre of specific antibodies of a population of individuals previously vaccinated against one or more antigens associated with the pathogenic microorganism. The composition has a relatively high protein concentration and a low percentage of protein aggregates, and is therefore suitable for both iv and im administration. In a preferred embodiment, the pathogenic microorganism is smallpox virus or vaccinia virus.

A process for reactive distillation wherein a carboxylic acid is reacted in a reaction section of a reactive distillation column with an alcohol under esterifying conditions in the presence of a catalyst to form an ester, wherein a first supply stream comprising the carboxylic acid, a second supply stream comprising the alcohol and a third supply stream comprising an inert entrainer are supplied to the reactive distillation column, wherein the first supply stream is supplied to the column at a first entry level located just above or at the top of the reaction section, the second supply stream is supplied to the column at a second entry level located in or just below the reaction section and below the first entry level, and the third supply stream is supplied to the column at a third entry level located in or below the reaction section and not above the second entry level and wherein a bottom stream comprising the ester formed and unreacted carboxylic acid is obtained and a top stream comprising unreacted alcohol, water and entrainer is obtained.

The present invention provides a steam cleaning system comprising a housing and a steam generating system for producing a low pressure, superheated saturated steam. A steam dispensing system comprising a water reservoir and a pump feeding the water into a steam producing boiler, is coupled thereto for dispensing the steam from the system to at least one first outlet port. A cleaning solution dispensing system is provided, having at least one reservoir for a cleaning solution, and a pump system for dispensing a predetermined amount of a cleaning solution from said at least one reservoir to at least one second outlet port. The at least one first and second outlet ports are positioned adjacent one another, such that a mixture of cleaning solution and saturated steam at a low pressure and low volume of steam and cleaning solution is dispensed from the system. The present invention is particularly suited to clean objects off the floor, vertical surfaces such as glass, and small areas of floor. Because of the small volume of water and chemicals used, it can be used indoors, as well as mounted on mobile platforms such as trucks, buggies, utility vehicles, automatic floor scrubbers or the like. The system also provides for cleaning of roads, sidewalks, exterior structures, or for spot cleaning or cleaning of surfaces in difficult environments. The low pressure, superheated, saturated steam cleaning assembly of the present invention provides low pressure (10 Bar) operation, and relies upon superheated steam temperatures coupled with environmentally friendly chemicals as an abrasive force, thus avoiding any collateral damage usually caused by the high pressure output. The present invention only applies 3 to 10 gallons of water an hour, depending on the size of the machine, while a conventional high-pressure washer / steamer will use 240 gallons per hour.

The present invention relates to a resonant tunneling piezoresistance microaccelerometer. Said invention utilizes the characteristics of that superlattice quantum well film has the piezoresistance effect, and on the super lattice film the resonant tunneling voltage-sensitive resistors are made, the substrate of said superlattice film can be made into peripheral base, cross-shaped cantilever connected with base and force-transferring mechanism of mass block whose periphery is connected with cantilever, and four resonant tunneling voltage-sensitive resistors are positioned in the connected place of cantilever and base. The resonant tunneling piezoresistance microaccelerometer is quantum device made up by adopting MEMS process.

The present invention provides battery cell having low resistance internal connections and compact, low volume terminal connections in order to maximize power-producing volume. The battery of the present invention may be created using a novel fold geometry to fold electrode tabs into compact, low profile tabs having a low total volume. The battery cell provides a means for equalizing path lengths from each electrode active area to the point of connection to the terminal and also reducing path length, thereby further reducing resistance of the battery. The connection means of the present invention consumes less internal battery space than connection means of prior art electrode stacks. Accordingly, the electrode stack of the present invention disposes more or larger battery cells in the battery than the prior art and thus provides more power than the prior art battery. The present invention is designed to overcome prior art difficulties in preparing a battery.

A device for collecting and transporting aqueous fluid from the oral cavity to a lateral chromatographic strip for test is disclosed. The lateral chromatographic strip is placed within and extend along a cavity defined in a housing. At least one inspection site to the lateral chromatographic strip is provided to enable inspection of selected sites on the lateral chromatographic strip for test results. A porous wick material protrudes from the housing to a collection site exterior of the housing at one end and communicates to the lateral chromatographic strip at the other end. The porous wick material has particulate construction, the particles adsorbing aqueous oral fluid to transport the fluid from the mouth to the lateral chromatographic strip without substantial absorption. The particles of the porous wick material are bound together to define a continuous interstitial volume for the flow of oral fluid to be transported and are treated to be hydrophilic to the adsorbed oral fluids. The porous wick material readily releases oral fluid to the lateral chromatographic strip. Prevention of reverse flow to the oral cavity from the lateral chromatographic strip naturally occurs due to the circuitous flow path of the porous wick material. A bite plate is coupled to the housing and insertable between the teeth of the patient to position the porous wick in the oral cavity for collecting the oral fluid. The bite plate is typically held in place by the occlusal force of the teeth, preferably the molars and / or the bicuspids, to position the porous wick in the buccal space. By observing the lateral chromatographic strip while the test device is in the mouth immediate test results are obtained.

A device for collecting and transporting aqueous fluid from the oral cavity to a lateral chromatographic strip for test is disclosed. The lateral chromatographic strip is placed within and extend along a cavity defined in a housing. At least one inspection site to the lateral chromatographic strip is provided to enable inspection of selected sites on the lateral chromatographic strip for test results. A porous wick material protrudes from the housing to a collection site exterior of the housing at one end and communicates to the lateral chromatographic strip at the other end. The porous wick material has particulate construction, the particles adsorbing aqueous oral fluid to transport the fluid from the mouth to the lateral chromatographic strip without substantial absorption. The particles of the porous wick material are bound together to define a continuous interstitial volume for the flow of oral fluid to be transported and are treated to be hydrophilic to the adsorbed oral fluids. The porous wick material readily releases oral fluid to the lateral chromatographic strip. Prevention of reverse flow to the oral cavity from the lateral chromatographic strip naturally occurs due to the circuitous flow path of the porous wick material. A bite plate is coupled to the housing and insertable between the teeth of the patient to position the porous wick in the oral cavity for collecting the oral fluid. The bite plate is typically held in place by the occlusal force of the teeth, preferably the molars and / or the bicuspids, to position the porous wick in the buccal space. By observing the lateral chromatographic strip while the test device is in the mouth immediate test results are obtained.

An electric bicycle power structure includes a motor, a power exchange device and pedal interlocking shafts; and provides power through the motor or the pedaling pedal interlocking shafts, wherein the powerexchange device automatically switches between the motor and the pedal interlocking shafts to accomplish power saving effects. The power exchange device has a planet decelerating mechanism, a clutch and a chain wheel cover. The power exchange device is located between the motor and the pedal interlocking shaft and is capable of directly switching between these power generating devices. A chain is used to impel the gear and wheel at the chain wheel cover, and an existing transmission gear of the bicycle is employed for accomplishing transmission effects, thereby decreasing numbers of parts without changing designs of the bicycle to further reduce production costs.

The invention provides a quaternary array micro-electromechanical system (MEMS) vector hydrophone microstructure. The quaternary array MEMS vector hydrophone microstructure comprises a square substrate, wherein four cross-shaped cantilever beams are etched on the square substrate, a minitype cylindrical object is fixed in the center of each cross-shaped cantilever beam, and voltage dependent resistors are arranged on the cross-shaped cantilever beams. Included angles between the four cross-shaped cantilever beams and the square substrate are different with each other and are respectively 0 degree, 30 degrees, 45 degrees and 60 degrees. The quaternary array MEMS vector hydrophone microstructure is made through the MEMS technology and has the advantages of being highly sensitive, low in energy consumption and micro in size. Compared with the single vector hydrophone, a hydrophone made of the quaternary array MEMS vector hydrophone microstructure is high in directional accuracy, strong in space resolution ratio power and capable of solving the problem of port and starboard ambiguity. Compared with the traditional hydrophone array, the size of the array of the quaternary array MEMS vector hydrophone microstructure is greatly reduced. The quaternary array MEMS vector hydrophone microstructure is integrally formed through the MEMS technology, high consistency exists among array elements, and burden on calculation of sequential arithmetic is lightened.

An apparatus and method for communicating system information in a wireless communication network. A first step 200 includes defining unicast threshold parameter(s). A next step 201 includes receiving a request for system information. A next step 202, 204 includes determining if the system information exceeds the threshold parameter(s). A next step 206-216 includes scheduling an ad-hoc broadcast of the system information if the system information exceeds the threshold parameter(s). A next step 218 includes sending a pointer to the scheduled ad-hoc broadcast. A next step 220 includes broadcasting the network service provider information per the schedule.

A thermal electric binary logic circuit is provided along with a method for switching a thermal electric binary logic circuit. The method accepts an input voltage representing an input logic state and generates a thermal electric (TE) temperature value in response to the input voltage. Then, in response to the TE temperature value, a TE voltage is generated and supplied as an output voltage representing an output logic state. In one aspect, a first TE element is connected to the input voltage and to a current source / sink having an intermediate voltage. As a result, the first TE element generates a first temperature reference. A second TE thermally is connected to the first TE, electrically connected to a first voltage reference, and electrically connected to an output to supply the output voltage. As a result, a first voltage varies across the second TE in response to the first temperature.

The present invention includes methods and apparatus for forming a biomedical device, such as an ophthalmic lens, in a area defined by a first mold part and a second mold part wherein during the formation of the biomedical device a HEMA is formed and the HEMA ring and a greater adhesive force is generated on the HEMA ring by the second mold part than the first mold part.

An electric bicycle power structure includes a motor, a power exchange device and pedal interlocking shafts; and provides power through motor or pedaling means, wherein the power exchange device automatically switches between power generating means to accomplish power saving effects and offering enhanced usage conveniences. The invention is characterized that, the power exchange device is consisted of a planet decelerating mechanism, a clutch and a chain wheel cover. The power exchange device is located between the motor and the pedal interlocking shaft and is capable of directly switching between power generating means. A chain is used to impel the gear and wheel at the chain wheel cover, and an existing transmission gear of the bicycle is employed for accomplishing transmission effects, thereby decreasing numbers of parts without changing designs of the bicycle to further reduce production costs.

A syphon filtration system is a low head, small foot print, long operating cycle, gravity filtration system for treatment of water and wastewater.The filtration system is an apparatus and process with one-stage or two-stage filtration process in one vessel. The filtration system can use different filtration media of sand, anthracite and activated carbon or other proprietary filtration media.The one-stage filtration system is applicable to removal of suspended solids or dissolved impurities.The two-stage filtration system can provide a combination of two different filtration processes for removal of suspended solids and dissolved impurities.The one-stage filtration system has low head room requirements, and the two-stage filtration system has small foot print requirements.In the two-stage filtration system, each filtration stage can be backwashed independently or both stages can be backwashed simultaneously.The filtration system uses novel syphon piping and controls design which extend the filtration operating cycle and reduce the filter apparatus headroom, and the filter backwash water volume requirements.

The invention discloses a stereoscopic lens manufacturing method, in which a stereoscopic lens material with adjustable curvature radius and focal distance under the condition of a fixed spacing is produced through combination of a mould head and a pair of moulds. The stereoscopic lens manufacturing method comprises a device preparing step and a stereoscopic lens material producing step, wherein the device preparing step comprises the following substeps: preparing the mould head for extruding molten plastic, manufacturing aspheric stereoscopic lens moulds for extruding and moulding a lens, and manufacturing a polishing roller for polishing the other surface of the lens material; the stereoscopic lens material producing step comprises the following substeps: adjusting the fitting degree of the moulds and the molten plastic, adjusting the extruding amount, the depositing amount and the producing speed of the mould head, extruding one surface of the plastic by using the aspheric stereoscopic lens moulds so as to form the front surface of the stereoscopic lens material, and polishing the other surface of the plastic by using the polishing roller so as to form the back surface of the stereoscopic lens material, by the stereoscopic lens manufacturing method, the stereoscopic lens material which has the same lens spacing, but has different curvature radiuses and corresponding focal distances.

The redundant power supply UPS module for an electronic system contains at least a first power supply electrically connected to an external AC power source and converting the AC electricity from the AC power source to DC electricity for powering the electronic system; at least a second power supply; a battery electrically connected to the second power supply for providing DC electricity to the second power supply; and a control module electrically connected to the first and second power supplies and capable of detecting the stored electricity of the battery and power interruption from the AC power source, and capable of controlling the charge and discharge of the battery.

A disposable device is provided for culturing and / or packaging and transporting ready-to-use viable cells cultured on membranes, gels or micro porous substrata. The device includes a housing base defining an interior for culturing cells. The membrane to be used for culturing the cells is placed inside the housing base and fixed with a ring. The base is closed by a lid, which is designed to protect the underlying cells during transport as well as minimize the volume of media used during culture, as well as transport. Media leakage is prevented by the silicon gasket as well as the snaps provided in the device.

A method (56) for fabricating an integral assembly (24) is disclosed. The method comprises providing (56) a first workpiece (26) having a first surface (46) and a second workpiece (28) having a second surface (50), performing a first bonding process between the first surface (46) of the first workpiece (26) and the second surface (50) of the second workpiece (28) to form a sub-assembly workpiece (48), and performing a second bonding process between a third surface (52) of the sub-assembly workpiece (48) and a fourth surface (54) of a third workpiece (30) to form the integral assembly (24). The material properties of the first workpiece (26) are different from material properties of the third workpiece (30).

Embodiments disclosed herein provide a pump or a multiple-pump system that can mix chemicals without dilution tanks and can dispense the mixture of chemicals in a precise and highly controllable manner, particularly useful in semiconductor manufacturing processes. In some embodiments, one or more piston pumps of similar displacement are used to mix and dispense the chemical directly. A first valve is opened to a first chemical source. A piston is moved in a first direction to a selected position in a chamber to draw the first chemical into the chamber. The first valve is closed and a second valve is opened to a second chemical source. The piston is moved in the first direction to a second position in the chamber to draw in the second chemical and mix the chemicals. The second valve is closed and the piston is moved to dispense the fluids through a dispense port.

The invention discloses an intelligent preparation method for a vermicular graphite cast iron brake drum. The intelligent preparation method comprises the following steps of adding part of pig iron, scrap steel and foundry returns into a low-frequency induction furnace for melting, and controlling the addition amount of a carburant; paving the bottom of a medium-frequency induction furnace with alayer of ferrosilicon to form a ferrosilicon layer, adding part of pig iron to form a pig iron layer, rising the temperature, and adding part of electrolytic copper and ferromanganese before the addedferrosilicon and pig iron are completely molten; pouring solution prepared in the low-frequency induction furnace into the medium-frequency induction furnace from the center of the top of the medium-frequency induction furnace through a pipeline; vermicularizing the solution in the medium-frequency induction furnace in vermicularizing casting ladles; and carrying out pouring. The intelligent preparation method for the vermicular graphite cast iron brake drum has the advantages of being high in brake drum production speed, good in brake drum quality and low in cost.