47 results about "Monitor ph" patented technology

Pharyngoesophageal monitoring systems are provided that monitor the environment of the pharynx and esophagus, and in some embodiments, detect and monitor refluxate, and may further record other physical episode data. The system may be provided, in some embodiments, as a bifurcated, adjustable, multiple internal reference probe, and methods thereof, to detect acid reflux and to monitor pH levels of acid reflux episodes simultaneously at multiple locations within the pharyngoesophageal passage. Some embodiments provide a recorder and one or a plurality of sensor arrangements, the recorder being responsive to the sensors and capable of correlation of signals generated by the sensor arrangements.

The present invention provides ratiometric fluorescent pH sensors for non-invasive, continuous monitoring of pH in such applications as fermentation processes. The ratiometric fluorescent pH sensors comprise a fluorescent dye that exhibits a shift in excitation wavelength with a corresponding shift in pH in the local environment of said fluorescent dye. Ratiometric measurements of the emission intensities at dual excitation maxima correlate to pH. Also provided is a fluorescent dye 6-methacryloyl-8-hydroxy-1,3-pyrene disulfonic acid (MA-HPDS). Further provided are systems and methods to non-invasively and continuously monitor pH.

The invention relates to a preparation method of inverse opal hydrogel photonic crystal with double layer hybridized structure. The preparation method has the advantages that: the raw materials are polyacrylic acid and polyacrylamide which are available, and the preparation method includes two filling gather steps and is simple and practicable; and the polyacrylic acid and polyacrylamide respectively contains carboxyl and amide functional group, thus simultaneously realizing pH and solvent sense response, and the polyacrylamide can be used as internal parameter reference to monitor pH responsecondition when not responding to pH in solution with pH value less than 8.

The present invention provides ratiometric fluorescent pH sensors for non-invasive, continuous monitoring of pH in such applications as fermentation processes. The ratiometric fluorescent pH sensors comprise a fluorescent dye that exhibits a shift in excitation wavelength with a corresponding shift in pH in the local environment of said fluorescent dye. Ratiometric measurements of the emission intensities at dual excitation maxima correlate to pH. Also provided is a fluorescent dye 6-methacryloyl-8-hydroxy-1,3-pyrene disulfonic acid (MA-HPDS). Further provided are systems and methods to non-invasively and continuously monitor pH.

The invention particularly relates to a low-temperature keep-alive transporter for freshwater fishes. The low-temperature keep-alive transporter for freshwater fishes comprises a PLC (programmable logic controller) control system (100), an aeration system (200), a fish box (300), a water circulation system (400), a filter system (430) and a water heating-cooling unit (500). The low-temperature keep-alive transporter for freshwater fishes is capable of automatically monitoring pH, dissolved oxygen and temperature of the water in the live fish transport box and storing and recording the data in the transport process, such as the pH, the dissolved oxygen and the temperature. The low-temperature keep-alive transporter for freshwater fishes is simple and convenient to operate. An operator can click on a touch screen to achieve the whole control process. The low-temperature keep-alive transporter for freshwater fishes can be used for low-temperature keep-alive transport and controlled freezing-point transport. No water needs to be added during the whole transport process. The biological water standard required by the high-density transport of live aquatic products can be guaranteed by the aid of the water circulation and the filter system of the transporter.

A system for monitoring a pH level of a sample medium is disclosed herein as including a pH probe having a pH-sensitive electrode, a reference electrode and a temperature electrode arranged within a housing of the pH probe. The probe housing generally includes a flexible inner tube and a flexible outer tube, the inner tube being concentrically arranged within the outer tube. Preferably, a size of the probe housing minimizes the amount of trauma introduced by insertion of the pH probe into physiological tissues, muscles or fluids. The system also includes a processing means, which is coupled to the pH probe for determining the pH of the sample medium. A method of forming a pH-sensitive electrode, a method of manufacturing a pH probe, and a method for using a pH probe are also disclosed herein.

Embodiments of the invention provide amperometric analyte sensor systems comprising a plurality of electrodes including one or more electrodes designed to monitor pH in order to facilitate the sensing of analytes at different pH levels within a sensor environment. Typical embodiments of the invention include glucose oxidase based amperometric sensors used in the management of diabetes.

The invention relates to efficient nitrogen and phosphorus removal device and method for low carbon source municipal sewage and belongs to the technical field of sewage treatment. The method comprises the following steps: alternately caring out anoxic and aerobiotic operations under a condition of real-time control when low carbon source urban sewage enters into a reaction in a progressive decreasing water inlet mode, and fully utilizing limited carbon source organic matters in raw water; carrying out anaerobic phosphorus release and removing the organic matters in a first section: an anaerobic section, and controlling the anaerobic stirring time by monitoring ORP (Oxidation-Reduction Potential) in real time; carrying out denitrification by fully utilizing the organic matters in raw water in the second anoxic sections, and controlling the anoxic stirring time by monitoring pH and ORP values in real time; mainly carrying out aerobiotic phosphorus absorption and short-range nitrification in the third aerobic section, and controlling the aerating time by monitoring the DO (Dissolved Oxygen) and pH value in real time. By accurately judging the reaction endpoints of nitrification and denitrification by real time control, the reaction time is saved, and alternative anoxic and aerobiotic operations are stable to denitrify in a short range for the system, so that the device and method have the advantages of improving the reaction rate, reducing the energy consumption and saving the outer carbon source, efficiently and simultaneously removing phosphorus and nitrogen and the like.

Presteralized manifolds having disposable multifunctional sensors are provided which are designed for sterile packaging and single-use approaches. These manifolds, which have disposable tubing and flexible-wall containers and are adapted to interact with other equipment which can be operated by a controller and a flow-imparting unit, provide automated and accurate delivery or purification of biotechnology fluid. The disposable sensor monitors pH, oxygen and electrical conductivity, alone or in combination, that interact with the controller or are connected to a separate user interface. Disposable sensor components and re-usable components can be dockable with each other.

The invention discloses a heterocyclic-fused naphthalimide and a preparation method and application thereof. The preparation method of the compound provided by the invention comprises the following steps: 1) 4-bromine-1, 8-naphthalic anhydride and an N-R1 compound are reacted in a solvent A to obtain a compound B; and 2) the compound B obtained in step 1), 1, 2, 4-triazole and K2CO3 are reacted in a solvent B, and the reaction liquid is collected to obtain the compound disclosed in formula (I). An experiment in the invention proves that the compound prepared in the method disclosed by the invention can be used as a naphthalimide fluorescent probe used for monitoring pH, can be used for sensitively monitoring the subtle change of the pH under a physiological condition in a water solution with the pH of 5.5-7.5, and has a narrow range of response.

Presteralized manifolds having disposable multifunctional sensors are provided which are designed for sterile packaging and single-use approaches. These manifolds, which have disposable tubing and flexible-wall containers and are adapted to interact with other equipment which can be operated by a controller and a flow-imparting unit, provide automated and accurate delivery or purification of biotechnology fluid. The disposable sensor monitors pH, oxygen and electrical conductivity, alone or in combination, that interact with the controller or are connected to a separate user interface. Disposable sensor components and re-usable components can be dockable with each other.

The invention discloses a method for treating rubbish percolates of different times for deep denitrification by using a bipolar USAB+A / O+SBR process, which belongs to the technical field of biological denitrification and is suitable for performing advanced treatment on the rubbish percolates. In the method, water output by an A / O reactor passes through a secondary sedimentation tank, then part of the water flows back into a first-stage UASB reactor to perform denitrification, so the method fully uses sufficient carbon sources of raw water, realizes an efficient denitrification efficiency, and fully uses the characteristic that the rubbish percolates contain high-concentration organic substances. Dissolved oxygen (DO), an oxidation-reduction potential (ORP) and a pH value sensor are used for monitoring the degradation and the short-range nitrification / denitrification processes of the organic substances in the reactor, and the short-range nitrification / denitrification processes can be well controlled according to monitored pH values and ORP values. The average ammonia nitrogen concentration of final yielding water is 2 mg / L, the total nitrogen concentration is lower than 40 mg / L, and the ammonia nitrogen removal rate and the total nitrogen removal rate are above 98 percent. The method completely depends on biological treatments, reduces the cost and simplifies the process. The method performs denitrification on the rubbish percolates, not only realizes complete nitrification but also realizes short-range nitrification, and realizes the deep removal of the nitrogen in the rubbish percolates.

The invention relates to an anti-corrosion device and a method for a heater drain system of a heat-engine plant. The device comprises a heater and an ammonification pump, an oxygenation pump, a pH sensor and an online oxygen dissolving instrument which are communicated with the heater through a valve on a pipeline, wherein the ammonification pump and an ammonification system are connected, the oxygenation pump and an oxygenation system are connected, and the ammonification pump, the oxygenation pump, the pH sensor and the online oxygen dissolving instrument are all connected on a variable frequency speed regulation control cabinet. The innovation point of the device is as follows: a sensor for monitoring pH and the online oxygen dissolving instrument are installed behind the valve of the heater drain system, thus detecting the hydrophobic pH and oxygen concentration of the heater drain system in real time, and transmitting the hydrophobic pH and oxygen concentration to the variable frequency speed regulation control cabinet at real time so as to control the ammonification pump to add ammonia and oxygen into the hydrophobic system to regulate the pH to be about 9.0 and the oxygen concentration to be about 100mu g / L, being beneficial to maintaining a passive film in the drain system pipeline, and effectively inhibiting flow accelerated corrosion.

Intelligent data acquisition unit for environmental protection including CPU is as monitor host. Two sets of CL 133 type pH / ORP transducers and adaptive pH and ORP electrodes, and one set of PRO type conductivity transducer and adaptive conductivity electrode are connected to I / O ports for analog signals in the monitor host in order to carry out at least one treatment: (1) monitoring waste water treatment plant through current sensor; (2) monitoring pH and concentration of copper, zinc, and nickel ions through pH electrode; (3) monitoring ORP and concentration of sexivalent chromium ion; (4) monitoring action of discharging waste water under the table. Features are: all-sided monitoring, simple operation.

The present invention discloses a method for preparing ranitidine bismuth citrate. Said method includes the following steps: making bismuth citrate be suspended in water, adding ranitidine and ammonia water to make reaction, the mole ratio of bismuth citrate, ammonia and ranitidine is 1:1-10:0.9, controlling reaction system pH value and making it be 6-12, its reaction temperature is 4-64deg.C, monitoring pH value, after the pH value is reached to neutrality, stopping reaction, filtering reaction solution and spray-drying so as to obtain the invented ranitidine bismuth citrate.

The invention provides a single-point double-parameter fluorescence optical fiber sensor probe for monitoring a pH value and oxygen partial pressure. The probe comprises an optical fiber probe, a polyurethane hydrogel layer fixed on the optical fiber probe, and pH-sensitive particles and oxygen-sensitive particles dispersed and embedded into the polyurethane hydrogel layer, and is characterized in that the pH-sensitive particles are prepared by covalently fixing HPTS on the amido modified p-HEMA; and the oxygen-sensitive particles are prepared by embedding Ru(dpp)32+ on organically modified silicate by virtue of solvent trichloromethane. According to the probe disclosed by the invention, the problems that cross interference is caused by resonance energy transfer among multiple indicators, photolysis and signal drift of the indicators can be caused by co-existence of the multiple indicators and the like in the traditional sensor can be solved.

The invention belongs to medicament adding technical field, and concretely relates to an intelligent on-line medicament adding system. The system comprises a medicament storage device, a medicament adding pipeline and a control system. The system is characterized in that the medicament adding pipeline includes a medicament conveying pipeline, and the medicament conveying pipeline is provided with a metering pump for adjusting the medicament conveying amount, a PH meter for monitoring PH values and a plurality of valves for controlling the pipeline to be on and off; and the control system includes a PLC core controller, a PID digital-analog controller, a GPRS module, a switch and a DCS controller. On-line acquired analog quantities such as a PH value, a liquid level, flow and temperature are taken as feedback values, a PID mathematic model is established, a fuzzy adaptive control algorithm is optimized, a diagnosis system is established, the medicament adding amount is calculated, then control data is input to the metering pump, and thus the adding amount of medicaments is controlled accurately.

The invention discloses an LED street lamp capable of monitoring the PH value of acid rain. The LED street lamp comprises an upper shell and a lower shell. The upper surface of the upper shell is concave downwards to form collection and sedimentation grooves, storage grooves and a guiding cone, which are arranged from outside to inside. The collection and sedimentation grooves are separated from the storage grooves by means of flooding rings. The storage grooves are separated from the guiding cone by means of collecting rings. An arc-shaped drainage plate at least covering the flooding rings is arranged above the upper shell. The gap between the arc-shaped drainage plate and the upper shell is taken as a rainwater collection inlet. The lower part of the guiding cone is connected with a PH measurement device by means of a guide pipe. A relatively reasonable rainwater collection process can be formed, a sedimentation effect on to-be-detected rainwater is achieved, damage of particle impurities in rainwater on a sensitive PH probe is avoided, that is, all that is needed is to meet a certain amount of rainfall, measurement can be conducted, and inaccurate measurement caused in the rainfall process with a small amount of rainfall is avoided.

The invention discloses an acid solution preparation apparatus capable of continuously monitoring the pH value. The acid solution preparation apparatus comprises a solution preparation stirring subsystem, a solution preparation foam removal subsystem, a trace powdery material supply subsystem and a solution preparation measurement control subsystem. The acid solution preparation apparatus has the beneficial effects that: the operation is safe, simple and convenient, the time and labor are saved, automatic preparation of an acid solution used in indoor oil and gas field chemical treatment research and continuous monitoring of the pH value are realized, measurement control and data analysis results are reliable, the measurement precision is high, and the intelligence is achieved.

The invention discloses a two / three-cluster glycosyl rhodamine derivative with general formulas I and II. Researches show that the obtained two / three-cluster glycosyl rhodamine derivative is good in water solubility, sensitive to pH and capable of being used as a fluorescent probe for monitoring pH changes so as to be directly used for monitoring pH changes in solutions, and has important scientific significance in research and application for monitoring on pH changes in cells and environments. Meanwhile, it is found that within the pH range between 4.35 and 7.5, the higher the acidity is, the higher the fluorescence intensity of the two types of compounds is, and the two / three-cluster glycosyl rhodamine derivative can be lightened in liver cancer cells (HepG2) under the slightly-acid condition to release strong red fluorescence and can be positioned in lysosome in a targeted manner. Meanwhile, the inventor established a preparation method of the corresponding compounds, the click chemistry reaction technology is used for the method, and synthesis is easy and scientific.

The invention relates to a centralized and real-time processing system for laboratory waste. A waste liquid neutralizing device is used for neutralizing waste liquid according to the monitored pH value of the waste liquid; a waste liquid caching device is connected with the waste liquid neutralizing device; a premixing device is connected with the waste liquid caching device, an atomizer is arranged on the premixing device, and a primary wind hole for introducing air is formed in the premixing device; a first-stage reaction device is used for carrying out evaporation and cleavage reaction on awaste gas-liquid-solid mixture conveyed from the premixing device; a micro-particle collection device is used for collecting solid micro-particles separated from the first-stage reaction device; other waste gas-liquid mixtures are collected into a second-stage reaction device from an outlet of the micro-particle collection device; a temperature monitoring point and a secondary wind pipe for introducing hot air are distributed on the second-stage reaction device; a signal end of the temperature monitoring point is connected with a control end of an adjusting valve of a secondary wind supply device; and a purifying device is used for purifying secondary-stage products separated from the second-stage reaction device. The centralized and real-time processing system is high in integration level, compact in structure, low in single amount processing cost of waste and high in processing efficiency.

The invention discloses a laser type remote PH (potential of hydrogen) value monitoring device. The laser type remote PH value monitoring device comprises a narrow-linewidth laser device, a 3dB coupler, transmission optical fibers, a sensing head, a liquid carrying tank and an optical power meter. The 3dB coupler comprises a port A, a port B, a port C and a port D, an output end of the narrow-linewidth laser device is connected with the port A of the 3dB coupler, the sensing head comprises a D-shaped optical fiber and a polarization maintaining optical fiber, the port B is connected with the D-shaped optical fiber of the sensing head by the corresponding transmission optical fiber, the port D is connected with the polarization maintaining optical fiber by the corresponding transmission optical fiber, and the port C is connected with the optical power meter. The laser type remote PH value monitoring device has the advantage that the technical problems of complicated structure of PH value monitoring equipment and incapability of remotely monitoring PH values over long distances in real time can be solved by the aid of the laser type remote PH value monitoring device.

The invention discloses a benzothiazole derivative and a preparation method and application thereof. The derivative is specifically named as 6-(2-(benzothiazolyl-2-yl)vinyl)naphthalene-2-phenol (BTNO). The preparation method comprises the following steps: dissolving 6-hydroxy-2-naphthaldehyde and 2-methylbenzothiazole in a very small amount of dichloromethane, adding trimethylchlorosilane and heating to obtain a crude product; removing a solvent from the crude product and conducting silica gel column separation to obtain a pure product. With decrease of the pH of BNTO from 11.50 to 4.00, fluorescence spectrums have blue shift and exhibit ratio fluorescence emission (F456nm / F526nm) characteristics. At the same time, the advantages of high sensitivity to pH response, good selectivity, high quantum yield and large Stokes displacement and the like can be achieved. In addition, the BTNO acts as a probe to mark cells by permeating cell membranes and can be used for monitoring pH fluctuationswithin the scope of cytoplasm.

A system for descaling heat exchanger surfaces using a varying concentration of either an acidic or alkaline solution, selecting an optimum pH value for descaling a heat exchanger according to the level of cleaning the heat exchanger requires, monitoring pH value of descaling solution during circulation through a heat exchanger, and adding chemical solution to achieve coincidence of optimum and monitored pH values during descaling operation.

The invention relates to a treatment method of high-concentration cyanide and arsenic containing ore pulp in a roasting and pretreating gold smelting plant, and belongs to the field of environmental protection. The treatment method comprises the following steps: adding the high-concentration cyanide and high-concentration arsenic containing ore pulp produced in the roasting and pretreating gold smelting plant into a stirring tank, and sequentially overflowing into the other stirring tanks respectively; inflating high-concentration sulfur dioxide gas produced while roasting, and inflating air from the bottom; monitoring pH values in the stirring tanks; adding ferrous sulfate into the stirring tanks; and performing pressure filtration treatment on the ore pulp discharged from the final stirring tank. By the treatment method, problems of enterprises are solved, environmental risks are reduced, and environmental benefits are significant; the treatment method is simple in flow path, stablein treatment effect, high in pollutant removing rate, low in operation cost and low in one-time investment; and the treatment method has a huge effect of promoting development of the gold industry.

The invention provides an apparatus for simulating circulatory permeation of an acidic solution to simulate erosive permeation of underground water acidic environment upon a test piece; the apparatus comprises: a solution receiving portion that is a rectangular closed container; a test piece receiving portion arranged in the closed container to receive a test piece and comprising a partition, a perforated tray, and a rotary fixing table sequentially from top to bottom, wherein the rotary fixing table is a four-jaw self-rotating fixing table; a solution circulation portion arranged in the closed container and having a solution pump and four universal plastic pipes arranged above the solution pump, wherein the universal plastic pipes are arranged in central symmetry; and a PH monitor portion mounted on the inner wall of the closed container to monitor PH value of the acidic solution. The apparatus of the invention enables a test piece to be permeated by an acidic solution comprehensively and continuously, is simple to operate, and is free of labor consumption, green and pollution-free.

The invention specifically provides a bird repellent device used for a power system and capable of monitoring the pH value of rainwater. The bird repellent device comprises a main body (1). The periphery of the outer surface of the main body (1) is provided with a rainwater collection groove (2); the inner and outer surfaces of the rainwater collection groove are provided with pH value sensors (3); and a pH value detection device is arranged on the main body (1). The bird repellent device provided by the invention overcomes the problem that a conventional bird repellent device used for power systems is incapable of monitoring the pH value of rainwater and has the advantage of capacity of measuring and recording the pH value of rainwater.

The present invention discloses a method for preparing ranitidine bismuth citrate. Said method includes the following steps: making bismuth citrate be suspended in water, adding ranitidine and ammonia water to make reaction, the mole ratio of bismuth citrate, ammonia and ranitidine is 1:1-10:0.9, controlling reaction system pH value and making it be 6-12, its reaction temperature is 4-64deg.C, monitoring pH value, after the pH value is reached to neutrality, stopping reaction, filtering reaction solution and spray-drying so as to obtain the invented ranitidine bismuth citrate.

The invention discloses a synthesis process of calcium formate, which comprises the following steps: respectively adding sodium formate solution and sodium hydroxide solution into an anode tank and a cathode tank of a cation-exchange membrane electric dialyzator; connecting a direct current power supply at two ends of an anode plate and a cathode plate, and simultaneously monitoring pH value of solution in the cathode tank and the anode tank; discharging the solution in the cathode tank and the anode tank when the change range of the pH value is plus or minus 0.1, adding excess calcium carbonate powder and / or calcium hydroxide powder into the solution in the anode tank and obtaining the solution of the calcium formate. The production process has simple process and low energy consumption, and is a green process.