2054results about How to "Prevent scaling" patented technology

The invention relates to methods and devices for remote or distributed continuous monitoring of physiologically relevant states. The invention provides for methods to automatically detect deviations or other states in physiological parameters and automatically alert a measured subject, user or other authorized party. The device provides for a universal platform for sensors, and further provides for the automatic compensation or distribution of devices or bioactive agents at appropriate levels and/or intervals in response to deviations or other states sensed in various physiological parameters.

An electrical box is mounted on a wall stud, and a wiring panel is installed within the electrical box so as to partition the interior of the electrical box into a user inaccessible wiring compartment and a user accessible module compartment. A protective cover is attached to the wiring panel so as to protect the wiring panel during a makeup phase of wall panel installation and painting. After the makeup phase, the protective cover is removed from the wiring panel and a module having a user operable electrical function is mounted to the wiring panel within the user accessible module compartment.

A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.

An electrical wiring assembly comprises a wiring panel and an electrical module. The wiring panel has a front side and a back side and is installable within an electrical box. The electrical module has a front cover and a back cover, and the front cover provides a user accessible electrical function. Panel fixtures extend generally perpendicularly from the front side of the wiring panel and shield panel contacts. Breakaways are configured to be removable so as to isolate a first portion of the panel contacts from a second portion of the panel contacts. Module fixture extend generally perpendicularly from the back cover of the electrical module and shield module contacts. The module fixtures are configured to engage the panel fixtures so as to electrically connect the module contacts with the panel contacts.

A method of conditioning mixed liquor in a membrane biological reactor comprising adding to the mixed liquor an effective coagulating and flocculating amount of one or more water soluble cationic, amphoteric or zwitterionic polymers, or combination thereof and methods of reducing membrane fouling, enhancing membrane flux and reducing sludge production.

A xerogel film exhibiting antifouling properties. The films are made using long-chain alkyltrialkoxysilanes, short-chain alkyltrialkoxysilanes, aminoalkyltrialkoxysilanes, alkylaminoalkyltrialkoxysilanes, dialkylaminoalkyltrialkoxysilanes, and perfluororalkyltrialkoxysilanes as sol-gel precursors. The films can be used as coatings on surfaces to reduce or eliminate fouling resulting from attachment and/or growth of biofoulants such as algae, diatoms, bacteria, barnacles, and biofilms.

The invention relates to a flexible tubular solid liquid processor, with filter, heat exchange and thermal extraction functions, wherein the filter element at least comprises one flexible tubular membrane unit, upper flange room and lower flange room; the hydraulic extracting system comprises pressure container, extract pump and tubes; the material liquid of container can be filtered by the tubular filter membrane of membrane unit, and said material liquid can be used as work medium to extract the concentrated material liquid in the filter room of membrane unit and discharge filter slag; the pressure container or the filter room of membrane unit can be filled with medium to exchange heat, to realize thermal filter or extraction; the filter element is arranged on the bearing base inside the pressure container; the filter rotator can rotate the filter element to realize cross-flow filter; and the invention can be arranged with gas or water reverse tube and vacuum filter tube; the slag discharge system comprises slag discharger or tubular inner/outer membrane scraper, or vibration slag discharger, or compression slag discharger.

The invention relates to a turbine housing comprising a housing (2) body having a first end (8), second end (12) and a central region (4), wherein the housing body comprises a bore running therethrough, and wherein the bore tapers from a first larger cross-section at and/or in the region of the first and second ends to a second, smaller cross-section towards the central region. The turbine housing may also include a fluid flow restriction means arranged (34, 40) in use to restrict fluid speed, direction or location within the turbine housing.

The present invention relates to a phosphorus-free composite antiincrustation corrosion inhibitor. It includes polyaspartic acid and/or polyepoxysuccinic acid and at least one kind of scale inhibition and dispersion agent, in which the scale inbibition and dispersion agent is polymer containing carboxylic acid group, or it includes polyaspartic acid and/or polyepoxysuccinic acid, zinc salt, molybdate or tungstate and polymer containing carboxylic acid group. Said invention is applicable to treatment of circulating cooling water.

A process and apparatus is described for filtering water with immersed membranes. In a batch process, permeate is withdrawn while the flow of feed is reduced or stopped at the end of a permeation cycle. The water level is reduced to a level where a portion of the membranes are exposed to air before draining the tank. In this or another process, the level of liquid is reduced to correspond with an area of the membrane fibers having an accumulation of solids. Aeration is provided for a period of time with the liquid at this level to dislodge at least a portion of the solids from the membranes. In these or other processes, the tank is partially drained between cycles to deconcentrate the tank, aeration is provided during backwashing and intermittently while permeating, and/or retentate is withdrawn from the tank during a portion of a permeation step.

The present invention provides thermoplastic roofing membranes comprising particles of crosslinked rubber and an aqueous (co)polymer dispersion. The thermoplastic roofing membranes are formed by combining particles of crosslinked rubber and a suspension polymer dispersion, or a coagulated aqueous latex (co)polymer dispersion, to form a mixture in aqueous dispersion, which aqueous dispersion mixture is subjected to solid state shear pulverization to form materials that can be processed as thermoplastics at crosslinked rubber concentrations of from 10 wt.% to as high as 95 wt.%, based on the total solids of the material. The method may further comprise kneading the pulverized product, followed by extrusion to form roofing membranes.

The invention relates to an improved design for a spray gun and application system for cold gas dynamic spraying of a metal, alloy, polymer, or mechanical mixtures thereof. The gun includes a rear housing comprising a powder inlet and a gas inlet, a front housing removably affixed to the rear housing and comprising an mixing cavity therein for mixing of the powder and gas and an exit therefrom, a nozzle holder having a bore disposed therethrough and removably affixed to the front housing, and a polymeric nozzle positioned within the nozzle holder, an interior taper of the nozzle holder bore complementing an exterior taper of the nozzle. The nozzle having an initially converging, subsequently diverging centrally disposed bore therein adapted to receive the mixed powder and gas from the mixing chamber and the nozzle holder including a cooling jacket which is thermally coupled to the nozzle adjacent the nozzle inlet and mechanically coupled downstream of the nozzle inlet.

A method and apparatus provide fluid treatment at a plurality of distinct points using a length of energized magnetically conductive conduit in fluid communication with non-magnetic coupling devices. The instant invention prevents the formation and accumulation of contaminants within conduits and on equipment utilized in the transportation, delivery and processing of fluid columns. It may also be utilized to accelerate the separation of oil and water and increase the efficiency of oil/water separation equipment.

The present invention provides novel curable compositions useful in the preparation of light management films and other optical articles. The curable compositions comprise (a) at least one silicone-containing surfactant, (b) at least one a multifunctional (meth)acrylate having structure I; (c) at least one nanoparticulate filler; and in certain embodiments, (d) at least one monofunctional (meth)acrylate. The curable compositions may be cured to provide the corresponding cured compositions and articles made therefrom.

An inexpensive surface-protective film which is excellent in the ability to protect an adherend (in particular, optical sheet). With the surface-protective film (pressure-sensitive adhesive sheet) adherent to an adherend (in particular, optical sheet), an inspection of the adherend for defects can be made with satisfactory precision. Also provided is an inexpensive surface-protective film which prevents an adherend (in particular, optical member such as optical sheet) from being electrostatically charged during the processing or transportation of the adherend (in particular, optical sheet), and has the function of preventing fouling. The protective films each is a removable pressure-sensitive adhesive sheet which comprises a base layer, a pressure-sensitive adhesive layer formed on one side thereof, and an antistatic layer formed on the other side, characterized in that the antistatic layer contains a polymeric antistatic agent comprising an olefin block and a hydrophilic block.

The invention provides a deep blockage removal and injection increase method for a water injection well of a medium-and-high-permeability sandstone reservoir. The method mainly solves the problems of oil pollution, deep blockage removal of a ground layer and the like of a sewage injection well, which can not be solved in the existing conventional acidification method. In the method, the slug type injection technology of "washing-clearing-blockage removing-stabilizing" is adopted; and the injection increase effect can be improved and the injection increase effective date can be prolonged. The method comprises the following steps: during construction, firstly, the well is backwashed at high displacement, and impurities near a well bore and a bore hole are washed; secondly, organic blockages near an oil layer are washed; then, organic and inorganic blockages in the areas near the well and the deep part of the oil layer are removed in the mode of multistage injection and multiple acid liquid systems, so that the seepage capability is improved; and finally, stabilizing treatment is adopted for prolonging the injection increase effective date. Through the adoption of the slug type injection technology, blockage damage is removed in batches, and substrate treatment, scale prevention treatment and scale inhibition treatment are performed so that the injection increase effect is improved, the injection increase effective date is prolonged and a better blockage removal effect is achieved.

An amperometric sensor includes a first electrode, a second electrode and a reference electrode. The sensor further includes a switch to selectably electrically connect the first electrode as a working electrode and to electrically connecting the second electrode as an auxiliary electrode during a first time interval. During a second time interval, the switch electrically connects the first electrode as the auxiliary electrode and electrically connects the second electrode as the working electrode. The switching of the two electrodes is repeated continuously as amperometric measurements are performed. Preferably, the sensor includes an ultrasonic transducer proximate the working electrode and the auxiliary electrode to clean the electrodes.

The present invention relates to a method of removing nitrogen oxides from the exhaust gas of a lean-burn internal combustion engine by selective catalytic reduction (SCR) using ammonia. The exhaust gas is routed first over a platinum-containing pre-catalyst and then over an SCR catalyst. The ammonia needed for the selective catalytic reduction is added to the exhaust gas upstream of the pre-catalyst at an exhaust-gas temperature below 250° C., while it is supplied to the exhaust gas between the pre-catalyst and the SCR catalyst at an exhaust gas temperature above 150° C. By adopting this procedure, a very large temperature range for the selective catalytic reduction with high nitrogen conversion rates is obtained.

Methods are disclosed for preparing lignin from lignocellulosic biomass using rapid full or partial pressure reduction to separate and pulverize the lignin without fouling the equipment and with improved energy recovery.