Showing papers on "Diffuser (sewage) published in 2002"

Method, apparatus, and diffuser for reducing laser speckle

Abstract: An apparatus (142) of reducing speckle includes illumination optics (148), a diffuser (154), and projection optics (156). The illumination optics couple a laser illumination (172) to the diffuser (154), which is located in a first image plane (162). The diffuser (154) divides the laser illumination into the phase cells and subdivides the phase cells into the cell partitions. The diffuser (154) also applies the temporal phase variation (155, 157) to the cell partitions. The projection optics (156) project an image of the first image plane (194) onto a diffuse surface (158). A display apparatus adds a light modulator (150) to the apparatus for reducing speckle and places the light modulator in a third image plane located between a laser source (146) and the diffuser (154). The diffuser (154) includes first and second diffuser cells, each of which include first and second diffuser cell partitions. In use, the first diffuser cell partitions induce a first relative phase of zero while the second diffuser cell partitions induce a second relative phase of pi radians. The first and second diffuser cell partitions of the first diffuser cells are preferably arranged in a first Hadamard matrix pattern. The first and second diffuser cell partitions of the second diffuser cell are preferably arranged in a second Hadamard matrix pattern. A method of reducingspeckle includes dividing a laser illuminated area into phase cells, subdividing the phase cells into cell partitions, and applying a temporal phase variation to the cell partitions within an integration time of an intensity detector viewing the laser illuminated area.

Hybrid diffuser for minimizing thermal pole tip protrusion and reader sensor temperature

Abstract: An enchance recording head design provides conduction and mechanical restraint control in order to minimize the pole tip protrusion and the head temperature resulting from the thermal heating of the magnetic recording head during operation. In one embodiment, the recording head includes a hybrid diffuser formed within an insulation layer, at a predetermined distance from the head write section. The hybrid diffuser is comprised of a thermal conduction layer with high thermal conductivity, such as gold or copper, and a mechanical restraint layer having near zero CTE, such as a 60-80% face-centered-cubic NiFe (Invar) material. The hybrid diffuser is recessed from the ABS to prevent the delamination of the hybrid diffuser due to the otherwise displacement incompatibility between the inner insulating layer and the hybrid diffuser at the ABS.

Light diffuser with variable diffusion

Abstract: A light diffuser comprises a film bearing a macro diffusion efficiency variation in which the efficiency variation is greater than 5% between two locations that are separated by at least 2 cm where the diffuser comprises a base and a plurality of convex or concave complex lenses on the surface of the base.

Light diffuser with colored variable diffusion

Abstract: The invention provides a light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored. The invention also provides light diffuser comprising a macro diffusion efficiency variation wherein at least part of the diffuser is colored for rear projection displays, back-lighted imaging media, and a liquid crystal display component and device. The invention further provides a process for preparing such a diffuser.

Exhaust aftertreatment device with flow diffuser

Abstract: An exhaust aftertreatment device has a diffuser upstream of an aftertreatment element such as a catalyst element or a filter element such as a diesel particulate filter. The diffuser de-focuses centralized velocity force flow against the aftertreatment element from the inlet in a space efficient and flow efficient construction.

Laminated microporous diffuser

Abstract: A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings The sidewall defines an interior hollow portion of the member The diffuser has a second elongated member having a second sidewall having a plurality of microscopic openings, the second member being disposed through the hollow region of the first member The diffuser includes an end cap to seal a first end of the microporous diffuser and an inlet cap disposed at a second end of microporous diffuser for receiving inlet fittings

Air diffuser membrane treated with biocide

Abstract: A fine bubble diffuser membrane (22) used in the aeration of wastewater is treated with biocide to inhibit growth and accumulation of biological materials on the membrane (22) The membrane (22) may be constructed of EPDM rubber or urethane The biocide may be carbolic acid either dispersed throughout the membrane (22) or applied as a coating on the surface of the membrane (22) exposed to the wastewater The membrane (22) is a flexible and elastic structure impervious to liquid and provided with slits (28) that close to prevent wastewater inflow in the absence of aeration and open in response to aeration pressure to discharge air into the wastewater

Catheter for peritoneal dialysis

Abstract: The continuous flow catheter (10) for peritoneal dialysis includes at least two lumens, of which one is short (12) and the other is long (14). The long lumen (14) is coiled (22) and contains a plurality of openings (26). The short lumen (12) is provided with a diffuser (30) for the dispensing of fluid in a diffused manner. Also disclosed are methods for implanting the catheter.

Diffuser and an aeration apparatus equipped with such a diffuser

Abstract: A diffuser for an aeration apparatus includes a cylindrical body having an outer surface and an inner surface defining a blind bore. The blind bore has an open attachment end adapted for connection to a conduit and a closed impaction end. The body has radial slots, whereby fluids are diffused radially from the body through the slots. The diffuser, as described above, has proven to be effective for use in aeration of water for aquaculture.

Air diffusion method and air diffusion system

Abstract: PROBLEM TO BE SOLVED: To provide an air diffusion method and an air diffusion system capable of surely removing the deposits to air diffusion bores and of maintaining treatment efficiency at a high level in a biological treatment by shortening the time for stopping ventilation in diffusing air to water to be treated by using an air diffuser provided with air diffusion membranes. SOLUTION: The air diffusion method comprises using the air diffuser which is provided with plates and the air diffusion membranes arranged to cover the plates and has air housing sections between the plates and the air diffusion membranes. The method includes an air diffusion step of supplying air to the air housing sections of the air diffuser arranged in the water to be treated and spouting air bubbles into the water to be treated from the air diffusion bores produced by expanding the air diffusion membranes by the pressure of the air, and a washing step of stopping the supply of the air while keeping the air diffuser arranged in the water to be treated and washing the air diffusion bores by washing water. COPYRIGHT: (C)2004,JPO

Device for oxygenating sea water

Abstract: A diffuser hose for oxygenation of water, in aquaculture installations for marine organisms in the sea. The hose (5) consists of a perforated hose (6), to which substantially pure oxygen is supplied, and at least one perforated hose for oxygen distribution (7), wherein the supply hose has fewer perforations/holes/pores than the distribution hose, thereby providing pressure equalisation. Diffuser hoses herein provide for the formation of oxygen microbubbles with an oxygen partial pressure that is such that the oxygen passes into the water in the fish farm.

Canopy air delivery system

Abstract: An area air delivery system for delivery of filtered air to an area occupiable by a user who can enter and leave the area, such as the head end of a bed, includes a canopy for at least partially surrounding the area to which air is to be supplied and defining the area which a user can enter and leave. An air diffuser positioned in the canopy includes a housing having an air impervious rear wall, air impervious side walls, and a perforated front wall forming a plenum in which a filter bag resides. The plenum is connected to a source of pressurized, preferably prefiltered, air so that pressurized air is supplied to the interior of the filter bag to diffuse through the filter bag into the plenum. Perforations in a predetermined area of the perforated front wall of the housing allow air to flow through the perforations and provide a substantially even flow of air from the perforated front wall of the diffuser into the canopy.

Self-automated mushroom growing system

Abstract: A self-automated mushroom growing apparatus and method for providing a continuous water and air supply for growing mushrooms on a small-scale. The apparatus is an enclosed, terrarium-like Grow Space including a porous Wicking Medium substrate, and an Air Diffuser rod situated within or below the porous Wicking Medium. An Air Diffuser is situated within the apparatus and is connected to an air supply to provide fresh air to the Grow Space. The porous Wicking Medium is saturated with water. The saturated Wicking Medium provides a continuous supply of water to a Cake Culture in contact with the Wicking Medium. The Air Supply mixes stale air that settles near the surface of the porous Wicking Medium.

Air bag system having diffuser structure

Abstract: An air bag system is provided in which an air bag stored in a folded state in a vehicle is adapted to be inflated by a gas supplied from an inflator through a diffuser so as to protect an occupant of the vehicle. In the air bag system, the diffuser is disposed on one side of the inflator such that the diffuser and the inflator are substantially aligned with each other, and the diffuser includes a gas feed portion that is exposed to a gas inlet formed in a generally middle portion of the air bag as viewed in a longitudinal direction thereof.

Gas diffuser ocean water lifting method and device

Abstract: A variety of devices capable of bringing ocean water from a considerable depth to the surface using airlift systems. A bubble of air released in the ocean will rise to the surface. If a gas diffuser is employed to release millions of bubbles of air, the rising cloud of bubbles will entrain the surrounding water and pull it toward the surface.

Effect of Degassing Treatment on the Quality of Al-7Si and A356 Melts.

Abstract: A degassing treatment is necessary to assure the quality of aluminum alloy castings. Its effect on the mechanical properties of the A356 alloys has been well studied and documented. This study assessed the effect of different degassing diffusers, a lance and a porous bar, on the areas of the foggy marks and the pore counts as revealed in the chilled Al-7Si and the A356 alloy sample sections. The degassing bubbles rose in the melt floating with induced convection loops during degassing. The porous diffuser generated a strong and wide convection loop in the melt. There are two bubble explosion sites when a porous diffuser was used: one in the area close to the wall of the crucible and another near the diffuser. Using a lance diffuser generated a coarse-bubble cloud near the diffuser during degassing. For Al-7Si alloy, different diffusers produced a close ratio of foggy marked area and a close pore count but the quality of A356 alloy melt was affected by diffusers and/or Sr addition. During rotating bending tests, the fatigue life of the specimens was affected by the pore count and the relative porosity, but was irrelevant to the foggy marks.

Light diffuser containing perimeter light director

Abstract: Disclosed is a light diffuser comprising a perimeter area and a central area wherein the perimeter area contains a light director that directs at least a portion of the light incident on it toward the central area.

Diffuser for deodorizing products to be applied to vehicle vent-holes

Abstract: It is herein described a diffuser for deodorizing products of the type consisting of an element provided with means apt to allow its application in correspondence with a vehicle vent-hole, the said diffuser showing openings for the inlet and outlet of an air flow apt to reach a deodorizing product introduced inside an envelope consisting of a semipermeable membrane apt to allow the passage of the perfumed oil molecules when it is reached by an air flow. Means are provided apt to control the said air flow which reaches the said deodorizing product, consisting of a bored disk placed in contact with a wall wherein there are openings for the air flow inlet, the said disk can be rotated between a first position wherein it closes the said air inlet openings to a second position wherein it opens the said openings, between the said base and the said disk for the closure of the air inlet openings, a plurality of ports being provided drawn in a diffuser wall and apt to allow the outlet, throughout the environment, of the air flow coming from the vent-holes.

Diffuser saddle connection

Abstract: A diffuser saddle connection is used for the attachment of diffusers on submerged air laterals in systems that treat municipal and industrial waste water. A top saddle surface and a bottom saddle surface enclose a portion of a feed pipe. A spout attached to the bottom saddle surface is solvent-welded to a tee, which is threadedly engaged to a diffuser. Flexible bushings on a nipple attached to the tee relieve stress on the connection between the diffuser and the diffuser saddle connection. An open end allows water to flow into the diffuser pipe to provide hydrostatic equilibrium and to reduce buoyancy.

Artificial environment for transporatation of live fish

Abstract: Apparatus and a method for obtaining and maintaining life-sustaining water conditions in tanks carried on trucks to keep fish alive for relatively long periods during transport. A flow of air from a blower is cooled in a heat exchanger by a stream of air from a refrigeration unit used also to cool a space enclosing the tanks, and the flow of air thus chilled in the heat exchanger is released into the water in the tanks through diffusers, cooling and aerating the water. Rising air from a diffuser can also be used instead of a pump to circulate water from a tank through purifiers. The blower used to provide the flow of air to the diffusers is driven by the engine associated with the refrigeration unit, providing a highly reliable, simple, system.

Diffuser for volatile material such as aromatic or chemical agent

Abstract: The first object of the present invention is to provide a diffuser for volatile material such as a volatile aromatic or chemical agent, capable of promptly diffusing the volatile constituent of the liquid into a surrounding air in a simple operation. The second object of the present invention is to enable a long-term storage. The third object is to provide a compact diffuser enabling a user to enjoy different aroma according to a time and a place. The diffuser has a flexible casing having an inner space and a vent hole formed therein and a breakable glass capsule enclosing a volatile material, and a liquid-absorbent member.

Flow diffusers in a uv pressurized reactor

Abstract: The subject matter of the invention is a flat diffuser for changing the flow cross section in a flow conduit, preferably for the inlet and outlet zone of UV disinfection devices for drinking water, water for industrial use or sewage water with a square or rectangular flow cross section. High-performance UV disinfection devices inevitably lead to the arrangement of UV radiators in square or rectangular UV radiator grids transversally or longitudinally to the flow direction. In closed UV disinfection devices of high flow rates the inlets and outlets have round cross sections like the arriving piping. It is necessary to achieve there a transition from the arriving round inlet cross section to the completely differently shaped rectangular inlet cross section of the radiation chamber. A flat diffuser according to the inventive idea is helpful in the solution of this far from simple hydraulic problem and can lead to better hydraulic conditions in the radiation chamber and to a shorter overall length of the inlet and outlet zone and simplify its production.

Diffuser with oppositely-oriented nozzles for use in a carbonic acid control system

Abstract: A diffuser for use in a pressurized feed system. The diffuser introduces a carbonic acid solution into water to be treated. The carbonic acid solution within the diffuser is maintained at an elevated pressure. As the carbonic acid solution passes to the exterior of the diffuser, the pressure drop causes an effective mixing of the carbonic acid solution and the water. The carbonic acid solution mixes with the water and the pH of the water is reduced.

Electrophoretically deposited hydrophilic coatings for fuel cell diffuser/current collector

Abstract: A method is provided for making a hydrophilic carbon fiber construction, such as a fuel cell gas diffusion layer or diffuser/current collector, by electrophoretic deposition of a metal oxide selected from Type I or Type II, where Type I consists of metal oxides having a negative zeta potential and Type II consists of metal oxides having a positive zeta potential. A hydrophilic carbon fiber construction is provided, such as a fuel cell gas diffusion layer or diffuser/current collector, which is coated with a metal oxide and capable of wicking 200mg of water per 40mg of the hydrophilic carbon fiber construction.

Method for intensification of heat exchange at combustion of solid, liquid or gaseous fuel and heating device for its realization (modifications)

Abstract: heat engineering, applicable for combustion of solid, liquid or gaseous fuel in water heating devices of industrial, agricultural and domestic purpose. SUBSTANCE: the method consists in the fact that the phase state of the pressure flow of liquid heat-transfer agent is changed at inlet section of the heat exchanger in the low-temperature region of exit gases. The heating device has a device for combustion of fuel and a heat exchanger. The inlet section of the latter comprises an inlet chamber and an inlet mixing chamber separated by a partition with an inlet cavitator, inlet neck and an inlet diffuser hydraulically conjugated to the connecting section having successively arranged outlet mixing chamber, outlet neck and an outlet diffuser. EFFECT: enhanced coefficient of heat transfer from combustion products, mainly of low power-generating fuel, and enhanced efficiency of the device due to waste recovery of low-potential heat of combustion. 10 cl, 5 dwg

Double-cone device and pump

Abstract: The performance of a double-cone device (1) is increased, not only by moving the gap or inlet openings (22) a short distance into the exit cone (47), but also by making the conicity υ3 (55) of the so-formed small diffuser less than the conicity υ2 (109) of the remaining part (53) of the exit cone. Double cone units (7, 60), particularly the ones with this improved diffuser, may be used in pump installations (1, 60), like well-pumps (1), where liquids must be pumped from great depths.

Flow simulation in an elbow diffuser: verification and validation

Abstract: Note: Using Smart Source Parsing 9-12 September pp 3 Reference LMH-CONF-2002-016 Record created on 2005-11-04, modified on 2017-05-10