358results about How to "Increase pressure drop" patented technology

Blood treatment system and method for high rate hemofiltration ensures against pyrogenic patient reaction by providing various mechanisms for filtering replacement fluid to remove endotoxins and other safety features including detecting incorrect fluid administration.

The disclosure relates to composite nonwoven fibrous web including an embedded phase having a population of particulates forming a substantially continuous three-dimensional network, and a matrix phase comprising a population of fibers forming a three-dimensional network around the particulates. The disclosure also relates to methods of making a composite nonwoven fibrous web including forming an embedded phase having a population of particulates in a substantially continuous three-dimensional network, and forming a matrix phase comprising a population of fibers forming a three-dimensional network around the particulates. Articles made from a composite nonwoven fibrous web prepared according to the methods as described above are also disclosed. In exemplary embodiments, the articles may include gas filtration articles, liquid filtration articles, sound absorption articles, surface cleaning articles, cellular growth support articles, drug delivery articles, personal hygiene articles, and wound dressing articles.

The present invention relates to semiconductor technologies, and more particularly to a bipolar junction transistor (BJT) in a CMOS base technology and methods of forming the same. The BJT includes a semiconductor substrate having an emitter region, a base having a first contact, and a collector having a second contact and a well plug; a first silicide film on the first contact; a second silicide film on the second contact; a first silicide blocking layer on or over the semiconductor substrate between the first and second silicide films, and a second silicide blocking layer on the semiconductor substrate between the first silicide film and the emitter region.

In various embodiments, the present invention provides a means for improving gas turbine engine performance by applying fluid flow control to the inter-turbine duct joining a high-pressure turbine spool and an associated low-pressure turbine spool, allowing the low-pressure turbine spool to have a relatively larger diameter than the high-pressure turbine spool. One or more unobstructed fluid flow paths between one or more boundary layer suction ports disposed within the upstream end of the outer-body surface of the inter-turbine duct and the suction side of the associated low-pressure turbine nozzle are provided. Advantageously, the natural static pressure difference between these points results in a self-aspirating assembly. The fluid flow control provided by the respective suction and blowing forces generated allows for a relatively larger diameter low-pressure turbine spool and/or relatively fewer low-pressure turbine nozzles to be used than is possible with conventional systems, assemblies, and methods. Thus, a gas turbine engine weight savings and optimized performance may be achieved.

An inhalable dry powder formulation containing SAE-CD and an active agent is provided. The formulation is adapted for administration by DPI. The SAE-CD serves as a carrier rather than as an absorption enhancer. The average particle size of the SAE-CD is large enough to preclude (for the most part) pulmonary deposition thereof. Following release from the DPI device, the SAE-CD-containing particles dissociate from the active agent-containing particles in the buccal cavity or throat, after which the active agent-containing particles continue deeper into the respiratory tract. The physicochemical and morphological properties of the SAE-CD are easily modified to permit optimization of active agent and carrier interactions. Drugs having a positive, neutral or negative electrostatic charge can be delivered by DPI when SAE-CD is used as a carrier.

An apparatus for controlling flow of fluid from a reservoir into a wellbore is provided, which apparatus in one embodiment may include a flow-through region configured to substantially increase value of a selected parameter relating to the flow-through region when selected parameter is in a first range and maintain a substantially constant value of the selected parameter when the selected property of the fluid is in a second range.

A light-emitting display capable of maintaining low power consumption and improving display quality irrespective of the configuration of an auxiliary wiring is provided. A second electrode 20 and an auxiliary wiring 18B are electrically connected to each other through a conductive contact section 15B. Moreover, only a part of the auxiliary wiring 18B is connected to the contact section 15B. Even if the surface of the auxiliary wiring 18B is oxidized, an increase in connection resistance is prevented. Moreover, a restriction on layout is not imposed at the time of forming the contact section 15B.

An inflow control device may include flow control elements along a flow path. The flow control elements may change the inertial direction of the fluid flowing in the flow path. The change in inertial direction occurs at junctures along the flow path. The flow control elements may also be configured to form segmented pressure drops across the flow path. The segmented pressure drops may include a first pressure drop segment and a second pressure drop segment that is different from the first pressure drop segment. The pressure drop segments may be generated by a passage, an orifice or a slot. In embodiments, the plurality of flow control elements may separate the fluid into at least two flow paths. The flow control elements may also be configured to cause an increase in a pressure drop in the flow path as a concentration of water increases in the fluid.

A see-through organic light emitting display device including a light emitting region having a transparent anode, an organic light emitting layer, and a transparent cathode, and a see-through region having a transparent auxiliary electrode, which is configured to transmit external light. The transparent auxiliary electrode can be made from the same material as the transparent anode and separated from the transparent anode, and the transparent cathode extends into the see-through region so as to be electrically connected with the transparent auxiliary electrode.

A molded respirator is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled continuous monocomponent polymeric microfibers and larger size fibers of the same polymeric composition. The respirator is a cup-shaped porous monocomponent monolayer matrix whose matrix fibers are bonded to one another at at least some points of fiber intersection. The matrix has a King Stiffness greater than 1 N. The respirator may be formed without requiring stiffening layers, bicomponent fibers, or other reinforcement in the filter media layer.

A compressed air stream is cooled to a temperature suitable for its rectification within a lower pressure heat exchanger and a boosted pressure air stream is liquefied or converted to a dense phase fluid within a higher pressure heat exchanger in order to vaporize pumped liquid products. Thermal balancing within the plant is effectuated with the use of waste nitrogen streams that are introduced into the higher and lower pressure heat exchangers. The heat exchangers are configured such that the flow area for the subsidiary waste nitrogen stream within the higher pressure heat exchanger is less than that would otherwise be required so that the subsidiary waste nitrogen streams were subjected to equal pressure drops in the higher and lower pressure heat exchangers. This allows the higher pressure heat exchanger be fabricated with a reduced height and therefore a decrease in fabrication costs.

The present invention provides a ceramic filter to be used at a high temperature, and it contains a substance having preferential reactivity with an ash component contained in materials captured by the ceramic filter and not removed by a high temperature treatment such as combustion over the principal component of the ceramic filter; the reaction between said ash component being not removed by a high temperature treatment such as combustion of the filter and remaining accumulated and the filter component to cause melting of the filter being suppressed to attain a long period of service.

A partial oxidation catalyst of hydrocarbons; comprising a monolith support carrying a catalyst component, the catalyst component comprising a refractory inorganic oxide carrying an element of platinum group (a) and a refractory inorganic oxide (b).

A mixing chamber for an air handling unit having a first inlet, second inlet and an outlet. The first inlet receives a first air stream. The second inlet to receives a second air stream. The outlet discharges a mixed airflow. The first inlet includes a first damper having an opposed blade configuration for controlling the flow of the first air stream and the second inlet includes a second damper having an opposed blade configuration for controlling the flow of the second air stream. The mixing chamber also includes a control arrangement to control operation of the first and second damper. The control arrangement is configured to independently open and close each of the first and second dampers to regulate airflow into the mixing chamber.

A gate driver for driving a gate of a switching element Tr7 includes a driving part that drives the switching element according to a control signal and an active clamp circuit to clamp the voltage between the first and second main terminals of the switching element through the driving part. If a voltage applied between a first main terminal (drain) and a second main terminal (source) of the switching element exceeds a predetermined voltage, the active clamp circuit forcibly blocks a driving operation of the driving part from driving the switching element.

A vessel for conveying a precursor-containing fluid stream from a precursor material contained within the vessel, the vessel comprising: an interior volume defined by a top, one or more sidewalls, and a base; and at least one fluid outlet for vaporized precursor, and at least one particle barrier that defines at least one particle restricted space within the interior volume, wherein said particle barrier comprises at least one 3-dimensional filter. A method for using the apparatus is also disclosed.

Disclosed is a transdermal electrotransport drug delivery system having a constant current that can accommodate large resistance change in a body surface. A semiconductor circuit component such as a Zener diode or a PMOS FET is used to impose a voltage drop from the output of a voltage booster circuit to maintain a constant current for electrotransport. Methods for its use are also disclosed.

A method of providing a flow control device is disclosed, which one aspect may include: defining a flow rate; defining a desired relationship between a parameter of the flow control device that exhibits a substantial change when a selected property of the fluid changes in a first range and remains substantially constant when the selected property is in the second range; determining using a computer and a simulation program the relationship between the performance parameter and the selected property over the first range and the second range for the defined flow rate for a geometry of a flow through area of a flow control device; comparing the determined relationship of the performance parameter with the desired relationship; altering the geometry to a new geometry when the difference between the desired performance and the determined performance is outside a desired range; determining using the computer and the simulation program the relationship between the performance parameter and the selected property over the first range and the second range for the defined flow rate for the new geometry of the flow through area of the flow control device; repeating the process of altering the geometry and determining the performance until the difference between the desired performance and the determined performance for a geometry is acceptable; and storing the geometry of the flow through device on a suitable storage medium for which the difference between the determined performance and the desired performance is acceptable.

A heat recovery ventilator defrost system utilizing a bypass section which supplies warm air in both channels of the heat exchanger to accelerate defrost, continue some ventilation of stale warm air, and recirculate a portion of the stale air flow, so as to warm incoming cold fresh air. When the system is in defrost mode, warm exhaust air to be expelled enters an exhaust inlet port and into an exhaust plenum. Because the air being exhausted (by way of the exhaust fan) through the exhaust plenum is under a positive pressure, the stale air will still be sucked out through exhaust passageway into discharge plenum, but also through the passive non-motorized bypass section into inlet plenum. Further, because fresh air continues to be drawn into inlet plenum, due to the positive pressure, the warm stale air which has passed through the bypass section (flap) into inlet plenum is then drawn through the heat exchanger along the inlet passageway into supply plenum, and out through supply port into the enclosure or dwelling. In this way, the heat recovery ventilators defrost system of the present invention supplies warm air in both channels of the heat exchanger.