201 results about "Fluorescent tracer" patented technology

Methods and systems for monitoring and controlling the cleaning of membrane separation systems or processes are provided. The present invention uses detectable amounts of one or more inert fluorescent tracers added to a membrane cleaning process stream to evaluate and control the removal of contaminants and impurities during cleaning. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.

Methods and systems for monitoring and / or controlling the cleaning of membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a membrane cleaning process stream to evaluate and / or control the removal of contaminants and / or impurities during cleaning. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

The invention provides a composite low-phosphorus corrosion and scale inhibitor and application thereof. The composite low-phosphorus corrosion and scale inhibitor is prepared from a corrosion and scale inhibitor A and a corrosion and scale inhibitor B, wherein the corrosion and scale inhibitor A is prepared from 20-40 parts of polyepoxysuccinic acid (PESA), 20-40 parts of sodium gluconate and 20-60 parts of water; and the corrosion and scale inhibitor B is prepared from 10-25 parts of hydroxypropyl methacrylate (HPMA), 10-25 parts of acrylic acid / 2-acrylamido-2-methylacrylsulfonic acid copolymer (AA / AMPS), 5-10 parts of 2-phosphonobutyl-1,2,4-tricarboxylic acid (PBTCA), 10-25 parts of zinc salt, 1-2 parts of fluorescent tracer and 13-64 parts of water. The technical scheme is as follows: the corrosion and scale inhibitor A and the corrosion and scale inhibitor B in a weight ratio of 1:2 are compounded with water. The composite low-phosphorus corrosion and scale inhibitor has excellent corrosion and scale inhibition effects, and thus, the phosphorus content in the product is low, thereby reducing the phosphorus discharge and having favorable environmental protection performance.

Methods and systems for monitoring and / or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracer(s) added to a feed stream to evaluate and / or control the purification of such feed stream during membrane separation. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

The use of an isomer of anthracene disulfonic acid as an inert fluorescent tracer is described and claimed. The utility of this type of inert fluorescent tracer in boiler systems to trace unwanted carryover of boiler water into a steam line is also described and claimed.

A method of monitoring residual treating agent in treated water wherein fluorescent tracers are used to determine the concentration of treating agent in the water at two different treating agent dosages and the difference in the measured concentrations of the fluorescent tracer at the respective doses are correlated with the residual concentration of the treating agent. The fluorescence response at the different treating agent dosages is used to determine whether the system is overdosed or underdosed on a continuous basis and to control treating agent dose accordingly.

A method to control a cooling water system based on the rate of consumption of fluorescent polymer is described and claimed. The method includes providing a cooling water system and a water treatment product including at least one fluorescent polymer and a fluorescent tracer. Measuring the fluorescence of the fluorescent polymer and calculating its rate of consumption provides a way of determining whether to adjust one or more operating parameters in the cooling water system.

A method of monitoring residual treating agent in treated water wherein fluorescent tracers are used to determine the concentration of treating agent in the water at two different treating agent dosages and the difference in the measured concentrations of the fluorescent tracer at the respective doses are correlated with the residual concentration of the treating agent. The fluorescence response at the different treating agent dosages is used to determine whether the system is overdosed or underdosed on a continuous basis and to control treating agent dose accordingly.

The invention provides a composite phosphorus-free corrosion and scale inhibitor and its application. The composite phosphorus-free corrosion and scale inhibitor is composed of a corrosion and scale inhibitor A and a corrosion and scale inhibitor B, wherein the corrosion and scale inhibitor A is obtained through mixing polyepoxysuccinic acid (PESA), sodium gluconate and water; and the corrosion and scale inhibitor B is obtained through mixing hydrolytic polymaleic anhydride (HPMA), an acrylic acid / 2-acrylamide-2-methylpropanesulfonic acid copolymer (AA / AMPS), a zinc salt, a fluorescent tracer and water. The composite phosphorus-free corrosion and scale inhibitor, which compounds the corrosion and scale inhibitor A and the corrosion and scale inhibitor B according to a weight ratio of the corrosion and scale inhibitor A to the corrosion and scale inhibitor B of 1:2, has the advantages of excellent corrosion and scale inhibition effects, avoiding of a water eutrophication problem caused by phosphorus discharge, environmental pollution mitigation, and good environmental protection property.

The invention provides a construction method of a cell model for detecting pyrogens, the cell model and a pyrogen detection kit. The cell model utilizes specific locations of CRISPR / CAS9 induced genomes to form double-bond fission, TLR4 and CD14-MD2 are knocked into two chromosomes of a cell line respectively by the aid of the homologous recombination repair principle, green fluorescence GFP and red fluorescence RFP are respectively used for tracing finally successfully constructed TLR4 / CD14 / MD2 fixed-point knocked-in fluorescent tracer cell models, and the LPS stimulating cell model can detect release of IL-6 and TNF-a cytokines by means of ELISA, Western Blot, mass spectrum and immunomagnetic beads. The cell model is good in stability and high in sensitivity, and the lowest detectable limit can reach 0.005EU / mL and is far lower than 0.025EU / mL of the Tachypleus Amebocyte Lysate method.

A method and apparatus detects the presence of a fluorescent tracer dye, a change in capacitance, or a change in fiber optic electrical properties to determine whether or not a TCP gun has fired. The method and apparatus detects the number of charges fired to determine whether or not all TCP guns have fired and also determines the contributions of injection wells to producing wells by introducing fluorescent tracers into injection wells and detecting the presence of the fluorescent tracers at production wells. The invention places fluorescent dye particles in a gravel pack to sense when a gravel pack is deteriorating by detecting the tracer dye particles in the well flow.

Methods and systems for monitoring and / or controlling membrane separation systems or processes are provided. The present invention utilizes measurable amounts of inert fluorescent tracers and tagged fluorescent agents added to a feed stream to evaluate and / or control one or more parameters specific to membrane separation such that performance thereof can be optimized. The methods and systems of the present invention can be utilized in a variety of different industrial applications including raw water processing and waste water processing.

A method for target application of a Performance Enhancing Material to a creping cylinder in order to improve a tissue making operation is described and claimed. The method involves dividing the creping cylinder into Zones and then applying the desired Performance Enhancing Material on a Zone by Zone basis such that each Zone has the optimal Performance Enhancing Material present. Furthermore, a method to ascertain the amount and pattern of application of the Performance Enhancing Material used on the creping cylinder is described and claimed. This method involves adding an inert fluorescent tracer to said Performance Enhancing Material and then to use a fluorometer to look for the tracer on the creping cylinder, and / or on the creped tissue product and / or in the water removed from the felt.

Disclosed are assays, methods, and kits for the screening of test compounds for their capability to induce cardiotoxicity in a subject. In particular, whether a test compound has the effect to prolong the Q-T interval as measured by an electrocardiogram in a human. The assays, methods, and kits disclosed herein make use of the binding interaction between novel fluorescent tracers and the hERG K+ channel, and the propensity of a test compound to influence that binding interaction.

Disclosed are methods and chemicals that can be used as fluorescent tracers in the treatment of raw water and / or industrial wastewater. The fluorescent tracers are certain chemicals discovered to have beneficial properties for such uses, particularly having little variance in fluorescence emission for conditions that are known to interfere with fluorescence emission. The fluorescent tracers comprise rhodamine dyes.

A lubricant for conveyor chains for bottled products that has a direct application, without dilution, to form a layer or film of lubricant on the surface of the conveyor chain, where the application is continuous at prolonged intervals between the applications, so that the lubricant for the conveyor chains can be observed under UV light in order to verify the existence and correct application of said lubricant. The lubricant is composed from 1% to 50% in weight of silicon fluid; from 5% to 80% in weight of fatty acid; from 2% to 50% in weight of amine; from 5% to 50% in weight of hydrocarbon; from 5% to 30% in weight of emulsifier; from 10% to 80% in weight of polyglycol; and from 0.001% to 10% in weight of fluorescent tracer selected from a group consisting of fluorescent whitening agent, benzoxazole thiophene, aminotriazine formaldehyde co-condensates with organic dyes, and combinations thereof.

Methods of monitoring residual treating agent in treated water wherein the fluorescence intensity of the water at at least two different dosages of treating agent tagged or traced with fluorescent tracers are correlated with the residual concentration of treating agent. The fluorescence response at the different treating agent dosages is also used to automatically determine an optimal treating agent dose on a continuous basis and to control treating agent dose accordingly.

Fluorescent energy transfer dyes capable of moving between a more stacked configuration to exhibit fluorescent quenching and a more spaced configuration to exhibit fluorescence can be conjugated to a peptide epitope or nucleic acid for use in the detection of an unknown antibody in bulk solution. The resulting labeled peptide reagent can be used in an immunoassay procedure by placing it in bulk solution along with the unknown antibody to be detected. When the antibody binds to the peptide epitope, the pair of dyes carried by the peptide epitope will have their configuration altered from a stacked to an unstacked configuration and will exhibit a fluorescent increase in response thereto.

The invention pertains to a method for fluorometrically monitoring a Clean-In-Place (“CIP”) system and for fluorometrically monitoring the dosage of chemical added to the CIP system. Monitoring of the said CIP system can be based upon fluormetrically monitoring the fluorescent tracer, chemical or both, which are added to the CIP system.

The invention relates to a phosphorus-free composite corrosion and scale inhibitor for bitter circulating water and a preparation method thereof, belonging to the technical field of water treatment. The phosphorus-free composite corrosion and scale inhibitor for bitter circulating water is prepared from the following raw materials in percentage by weight: 5-20% of sodium molybdate, 5-20% of urotropine, 10-30% of polyepoxysuccinic acid, 1-5% of azole derivative, 5-20% of hydroxypropyl methacrylate, 5-15% of acrylic acid-acrylate-sulfonate terpolymer, 5-15% of sodium humate, 0.1-1% of fluorescent tracer, 0.5-2% of caustic soda flakes and the balance of deionized water. The phosphorus-free composite corrosion and scale inhibitor for bitter circulating water can not interfere with other water treatment agents, is free of phosphorus, zinc and other components harmful to the environment, and can effectively solve the problems of corrosion and scales in the bitter-based high-salt-content high-pH system. The invention also relates to a simple and convenient preparation method.

The invention provides a detection system and method for the deposition mass of an aerially applied pesticide. The detection system comprises an aerial sprinkling apparatus, a droplet collecting apparatus, a spectrum acquisition apparatus and a droplet deposition characteristic analysis apparatus, wherein the aerial sprinkling apparatus is filled with a pesticide application solution mixed with a fluorescent tracer and used for sprinkling the pesticide application solution to a preset area; the droplet collecting apparatus is a rollable continuous band-shaped medium laid in the preset area, having preset width and free of fluorescent effect, and the continuous band-shaped medium is used for collecting the pesticide application solution sprinkled by the aerial sprinkling apparatus; the spectrum acquisition apparatus is used for spectrum acquisition of the continuous band-shaped medium having collected the pesticide application solution; and the droplet deposition characteristic analysis apparatus is used for analyzing spectra acquired by the spectrum acquisition apparatus and calculating the deposition mass of droplet in the preset area. The detection system and method provided by the invention can conveniently acquire the deposition mass of the aerially applied pesticide.

Carbon-based fluorescent nano-agent tracers for analysis of oil reservoirs are provided. The carbon-based fluorescent nano-agents being inexpensive means of analyzing, among other properties, the porosity of a formation. The nanoagents are suitable for injection into a petroleum reservoir and can be subsequently recovered for determinations of flow rates and retention times.

The invention provides a fluorescent tracer for water treatment and a using method thereof. The tracer is a semiconductor quantum dot with fluorescent performance; after the tracer is mixed with a water treatment agent, the mixture is fed into an industrial water system; and the running level of water treatment facilities is improved by continuously monitoring the concentration of the fluorescent tracer in the water system and controlling the feeding amount of the water treatment agent. The tracer is inert in the water system, and has the characteristics of superior tracing performance, high detection sensitivity, stable performance, broad applicable water quality and the like.

The invention belongs to the technical field of agricultural plant protection, and specifically relates to an on-line measuring method for a mixing concentration field of a plant protection machine. The method employs a laser to irradiate a laser light, forms a sheet planar laser through a sheet light forming member, excites a mixing solution with a fluorescent tracer agent, and employs a CCD camera to obtain fluorescent images. A pesticide and the fluorescent tracer agent are mixed in to an original solution according to a fixed proportion. A uniform mixed solution is calibrated by diluting the original solution by different times. A mapping relationship between the mixing concentration and fluorescent grayscale values is established by combining curves. In real measurement, fluorescent grayscale images of acquiring dynamic mixing liquid are acquired in time and the concentration field of a mixing liquid is inverted through the image grayscale distribution. The method can on-line measure the mixing concentration field in a transparent mixing pipe in real time, and provide basic data for an automatic mixing technology and flow field analytical investigation. The method solves the defects that a conventional mixing concentration measurement method can only measure an average concentration but cannot measure the concentration field.

A method of using an inert fluorescent tracer in a system that contains liquids in contact with solid surfaces and wherein said system contains a corrosive environment, is described and claimed, as is a method of using an inert fluorescent tracer to trace the corrosive material itself. Combinations of inert fluorescent tracers in corrosive materials are also described and claimed.

The invention relates to a fluorescent monomer, a fluorescent tracing polymer and its preparation method. Its synthetic method comprises the following steps of: dissolving 7-diethylamino-4-methylcoumarin in a solvent, adding dropwisely bromopropylene, heating, cooling to obtain the fluorescent monomer allyl-7-diethylamino-4-methylcoumarin-ammonium bromide, and copolymerizing the fluorescent monomer with acrylamide and acrylic acid. The fluorescent polymer can be used as an oil field tracer to be applied in oilfield water-flooding and polymer flooding processes, and has good fluorescent tracer ability and chemical stability.

A method of using an inert fluorescent tracer in an industrial water system wherein the water of said industrial water system contains a certain amount of a corrosive material, is described and claimed, as is a method of using an inert fluorescent tracer to trace the corrosive material itself. Combinations of inert fluorescent tracers in corrosive materials are also described and claimed.