Academic literature on the topic 'PH-meter'
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Journal articles on the topic "PH-meter"
McLean, Andrew J. "pH Meter." Academic Psychiatry 41, no. 6 (July 20, 2017): 769. http://dx.doi.org/10.1007/s40596-017-0761-x.
Full textPeng, Wayne. "Nature's pH meter." Nature Methods 6, no. 6 (June 2009): 404. http://dx.doi.org/10.1038/nmeth0609-404.
Full textKEMSLEY, JYLLIAN. "NANOWIRE POWERS pH METER." Chemical & Engineering News 85, no. 43 (October 22, 2007): 11. http://dx.doi.org/10.1021/cen-v085n043.p011.
Full textParis, Michel R., and Daniel J. Aymes. "Experiments with "Calo-pH Meter"." Journal of Chemical Education 67, no. 6 (June 1990): 510. http://dx.doi.org/10.1021/ed067p510.
Full textBishnoi, Sandra W., Christopher J. Rozell, Carly S. Levin, Muhammed K. Gheith, Bruce R. Johnson, Don H. Johnson, and Naomi J. Halas. "All-Optical Nanoscale pH Meter." Nano Letters 6, no. 8 (August 2006): 1687–92. http://dx.doi.org/10.1021/nl060865w.
Full textGroß, Michael. "Ein Fisch mit pH-Meter." Chemie in unserer Zeit 48, no. 4 (August 2014): 245. http://dx.doi.org/10.1002/ciuz.201490046.
Full textAltwicker, Elmar R., and Maureen Michael. "Precipitation pH Comparison of pH-Meter with Indicator Kits." Journal of the Air Pollution Control Association 35, no. 1 (January 1985): 44–45. http://dx.doi.org/10.1080/00022470.1985.10465885.
Full textHuang, Jian, and Zichen Bai. "Design of a New PH Meter." Journal of Physics: Conference Series 1649 (September 2020): 012027. http://dx.doi.org/10.1088/1742-6596/1649/1/012027.
Full textParis, Michel R., Daniel J. Aymes, Rene Poupon, and Roland Gavasso. "Development of a new design for multipurpose meter: "Calo-pH Meter"." Journal of Chemical Education 67, no. 6 (June 1990): 507. http://dx.doi.org/10.1021/ed067p507.
Full textNgafifuddin, Muchamad, Sunarno Sunarno, and Susilo Susilo. "PENERAPAN RANCANG BANGUN pH METER BERBASIS ARDUINO PADA MESIN PENCUCI FILM RADIOGRAFI SINAR-X." Jurnal Sains Dasar 6, no. 1 (May 22, 2017): 66. http://dx.doi.org/10.21831/jsd.v6i1.14081.
Full textDissertations / Theses on the topic "PH-meter"
Hammond, Paul A. "A single-chip digital pH meter." Thesis, University of Glasgow, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.401960.
Full textPesce, Gianluca. "Study of carbonation in novel lime based materials." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.629662.
Full textHuang, Chao-Jen, and 黃昭仁. "A Low-Power System Chip Design forPortable ISFET pH-Meter." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/12430243777014266975.
Full text中原大學
電子工程研究所
95
Bergveld invented ISFET in 1970. A solid device of ISFET which combines chemical membrane and metal-oxide-semicondictor sences selected ion-chroma in solution. Various manufactures, readout circuits and calibrations were presented in backward-looking thirty years, but ISFET’s undesirable effect which is including light, noise, temperature, drift, hysteresis, flow rate, body effect and life cycle is limited justness in measure machine. All in one chip is the currect trend in VLSI circuit design. But this concept isn’t suitable for all systems. This thesis presented the dual chip design. One combines improving floating-gate readout circuit and Bandgap reference circuit which is maked in a replaceable stick, and the other combines 16-bit SAR-ADC, 16-bit digital calibration circuit and display driver which is converted ISFET information to display panel and accomplish the portable pH-meter system. This thesis presents the portable pH-meter system which is designed by signal 3V CR-2032 battery and using TSMC 0.35um Mixed Signal 2P4M Polycide 3.3 technical manufacture to accomplish all designs and layouts. The new circuit architecture by the thesis presented can be reduced ISFET’s undesirable effect and drop error. The entire system’s battery life is over 1000 hours by continuing using, and two chip’s power consumption is approximative 2.85uW. This portable pH-meter system is accureted 0.001 pH, and can be measured pH value from 2 to 12. The functions of calibration circuit are incluing signal point, dual points and three points by calibration.
Pei-Chen, Wang, and 王培烝. "Mixed-Mode Integrated Circuit Design for Portable pH-Meter Application." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/90283918183252895060.
Full text中原大學
電子工程學系
88
The major objective of this thesis is to design and implement an analog front-end circuitry with analog to digital converter (ADC) integrated circuit for portable, low power ion-sensitive field effect transistor (ISFET) based pH meter applications. In order to show the data converted from ADC, the AT89C51 controller has been used to calibrate and process measured data to LCD display. Research approaches for mixed-mode VLSI design consideration, layout skills and ISFET sensor characterization are also given in this thesis. The proposed pH meter system consists of three major modules, including analog signal readout module, A/D converter module, and LCD display driver and digital controller. 5V/3V/1.5V operational transconductance amplifiers have been developed for ISFET signal sensing module, a complete circuit design and implementation of a 1.5V bulk-driven two-stage sensing op amp are analyzed. The major design approach of the signal readout circuit is by using the constant current and voltage bias technique. These techniques lead to the gate-source voltage variation of ISFET''s threshold voltages directly proportional to the variations of the pH values. The implemented pH meter that is fabricated with a 0.5 mm double-metal double-poly CMOS technology works in a single power supply voltage of 5V and 3V respectively. The design consumes static power of 6.762mW at the operation voltage of 5 V. There are 0.02pH ~ -0.16pH errors measured at the pH buffer solutions from pH=2 to pH=12. The design result exhibits a satisfactory sensing linearity of the pH values from 2 to 12.
Dong, Gow-Long, and 董國榮. "Research on Low-Power VLSI Chip Design for pH-Meter System Application." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/23633799135554765591.
Full text中原大學
電子工程學系
88
The goal of this thesis is to study the design and implementation of digital circuit for pH meter applications. All of the design flow processes, such as circuit theory, circuit design and simulation, physical layout and chip measurement results are included in this thesis. In the pH meter system, the readings obtained after signal readout circuit, signal level tuning circuit and analog to digital converter are relative values. The two-point calibration circuit is used to obtain the absolute value. The binary to BCD code converter translates 12 bits binary code into four sets of BCD code, which can display 4 digits of pH value respectively from the two-point calibration circuit. We use a 3 1/2 digits LCD panel to display the measurement results. A LCD driving circuit is used to drive this LCD panel. Some design methodology in designing a CMOS integrated circuit to deduce power disspation has been discussed in this thesis. The sources of power dissipation which is the keystone is studied to make the low-power design. The low-power design methodology used in the circuit design includes finite state machine state assignment, probability analysis of digital signals, usage of various logic structures and clock signal gated. In this thesis, three chips have been implemented. Only the LCD driving circuit requires a 5V supply voltage. The others work with 3V supply voltages. All of the chips have been implemented using UMC 0.5umDPDM process technology through CIC (Chip Implement Center).
Hsieh, Jin-Sheng, and 謝晉昇. "Research on Mixed-Mode VLSI Chip Design for PH-Meter System Application." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/12971053192681071550.
Full text中原大學
電子工程學系
87
The major objective of this thesis is to design, research and implement the integrated circuit of digital type pH meter in mixed-mode VLSI design method. All of the design flow, such as circuit theorem, system specification constitute, circuit design and simulation, layout, post layout simulation and measure result are introduced in this thesis, too. The ISFET pH sensor need a constant voltage and constant current source to be its work condition. The output (VGS) of pH sensor will be linearity because of the constant voltage and current source, therefor the main function of analog read out circuit is providing constant voltage, current and read out the signal of pH sensor. In order to fit the working range of analog/digital converter, level shift circuit adjusts the signal to be a proper analog signal. Analog/digital converter converts the analog signal to a 8 bits digital data. Because the 8 bits digital data is absolute, we need a relative reference point to make the data to be relative. Calibration circuit will load the data of pH4 and pH7 to be the reference points, change unlinearity signal to linearity signal and adjust offset value to output to decoder circuit. The decoder circuit decode the data of calibration circuit to be B.C.D code and B.C.D code is decoded to be seven segment control code then. The implemented pH meter works in the condition of single power 5V, 1KHz clock frequency, The error value is 0.36pH~-0.2pH In the test process in pH2~pH11. The technique that we implement is UMC 0.5 m CMOS DPDM( Double Poly Double Mental ) .
Wang, Ming-Chia, and 王敏嘉. "The Design of Compensation Method and Portable pH Meter for ISFET Sensor." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/50916719895413322884.
Full text中原大學
電子工程研究所
94
The ion sensitive field effect transistors (ISFETs) have been used increasingly in physiological data acquisition and environmental monitoring in recent years. The pH monitoring of river, waste water or urine becomes more important in daily life. In addition, a single chip implementation is a trend for battery-operated devices such as glucose monitors, heart beat detectors and pH-meters. The objective of this thesis is to present the design and implementation of a low-power dissipation analog front-end signal processing chip including bridge-type readout circuit and VT extractor circuit couple with a compensation electronics. For battery power consideration, the proposed low power bridge-type readout circuit consists of a self-biased bandgap reference, an analoge subtractor and rail-to-rail operational amplifier; In addition, an PMOS-type VT extractor circuit couple with a temperature compensation electronics have been successfully fabricated in a 0.35�慆 CMOS technology. The proposed chip applied to Si3N4-gate ISFETs demonstrate a 1.8mW power comsumption for the buffer solutions with the pH value changed from 2 to 12. In addition, the LABVIEW software are used to compensate the ISFET thermal characteristics. Experimental results show that the temperature dependence of the Si3N4-gate ISFET sensor improved from 8mV/°C to less than 0.8mV/°C.
Chan, Yi-Chih, and 詹益治. "Research on ISFET Based pH-meter Chip Implementation using ASIC Design Methodology." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/00275303294542701508.
Full text中原大學
電子工程研究所
89
This thesis presents a design and implementation of mixed-mode integrated circuit chip for ISFET based pH meter applications. All of the design flow processes, such as circuit theory, circuit design and simulation and physical layout are included in this thesis. In the pH meter system, the readings obtained after signal readout circuit, signal level tuning circuit and analog to digital converter are relative values. The two-point calibration circuit is used to obtain the absolute value. The binary to BCD code converter translates 12 bits binary code into four sets of BCD code, which can display 4 digits of pH value respectively from the two-point calibration circuit. We use a 3 1/2 digits LCD panel to display the measurement results. A LCD driving circuit is used to drive this LCD panel. Key issues related to design methodology, signal processing, circuit operation and mixed-signal physical layout skills are developed in this thesis. The whole chip measure results include power consumption and voltage position. The analog circuit includes signal readout, signal level tuning and oscillator can function work. In this thesis, single chip has been implemented. The chip has been implemented using UMC 0.5um DPDM process technology through CIC (Chip Implement Center).
Wang, Yaw-Feng, and 王耀鋒. "3V ISFET Based Hand-held pH-meter Signal Processor Design Using ASIC Design Methodology." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/57233862931662580582.
Full text中原大學
電子工程研究所
90
In past two decades, micro-sensors based on CMOS IC technology have caught more attention on the electronic industries, universities and research organizations. The major concerns on the application needs, operation region, reliable and flexible circuit configurations are most important issues in order to collect the accurate, stable and reliable data from ISFET sensor. To develop an efficient signal processor is the most important task for hand-held pH meter design and realization. The objective of this research is to present a design and implementation of a mixed-mode ASIC for ISFET-based biosensor signal processing applications including H+ sensing and hand-held pH meter. For battery power consideration, the proposed signal processing ASIC consists of low voltage (3V) analog front-end readout circuits and digital processing modules have been developed and fabricated in a 0.5mm double-poly double-metal CMOS technology. Both of custom layout and automatic placement and routing methodology are adopted in the design. The core die size is around 3400 x 3300 mm2 and is packaged in 68 pins CLCC socket. The corresponding sensitivities of Al2O3 type commercial ISFET(SENTRON 2001) is 54.4mv/pH. The measurement accuracy of the chip is about 0.2pH between pH2 to pH12. Furthermore, the digital processing modules of the proposed ASIC are designed using pure logic and state machine. In order to replace the digital modules of the proposed chip and to catch up with the trend of System-On-a-Chip design methodology, an embedded 8-bits micro- processor called Forth P8 is also taken in this thesis. The developed Forth P8 chip has been fabricated in a 0.5mm double-poly double-metal CMOS technology by using self-developed cell library and automatic placement and routing methodology. The core die size is around 4000 x 4200 mm2. It has been proved to function work by using IMS test station. Finally, to pack all analog modules and P8 microprocessor into a SOC will be our next technical challenge.
Ho, Pei-Shuo, and 何培碩. "Preparation of Mesostructured Polyoxometalate Silicate Containing Au/Ag Nanoparticles and their Optical pH Meter Applications." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/57025043552423727089.
Full text東海大學
化學系
103
In this study, we prepare of two dimensional hexagonal (2DH) mesoporous polyoxometalate-silica composites containing Au nanoparticles (NPs) were fabricated using a photo-catalysis method at air-water interface. The resulting Au NPs can be functionalized with 4-mercaptobenzoic acid (4-MBA) to anchor Ag metal. The formed composites, Ag/Au@PSS-18, were characterized using Small Angel X-ray Scattering (SAXS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and thermo gravimetric analysis (TGA). In addition, 4-MBA was chosen as the probe molecule to examine the analyte-concentrating ability and surface enhanced Raman scattering (SERS) activity of the Au@PSS-18 composites. The results indicate that the Au@PSS-18 composites exhibit a prominent SERS effect. The best 4-MBA detection limit obtained was 1108 M, with a corresponding SERS enhancement factor exceeding 110. The 4-MBA was used as the pH sensing molecule. The Ag modified Ag/Au@PSS-18 not only provides a high sensitive response to pH changes ranging from pH 2.0 to10.0 in solution but also exhibits good response in gas samples.
Books on the topic "PH-meter"
Griswold, Norman E., and M. L. Gillette. Using a Ph Meter. Chemical Education Resources, 1997.
Find full textGillette, Marcia L., and John W. Alcock. Monitoring Acid-Base Titrations With a Ph Meter: Modular Laboratory Program in Chemistry. Chemical Education Resources, 1997.
Find full textBook chapters on the topic "PH-meter"
Jaselskis, Bruno, Carl E. Moore, and Alfred von Smolinski. "Development of the pH Meter." In ACS Symposium Series, 254–71. Washington, DC: American Chemical Society, 1989. http://dx.doi.org/10.1021/bk-1989-0390.ch018.
Full textTse, Yu-Hong, Rick Jairam, and Robert Metcalfe. "The pH Meter and Its Performance Verification." In Analytical Method Validation and Instrument Performance Verification, 229–42. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2004. http://dx.doi.org/10.1002/0471463728.ch15.
Full textGogoi, Javin. "pH Meter." In Simplified Practical Manual of Biochemistry, 103. Jaypee Brothers Medical Publishers (P) Ltd., 2018. http://dx.doi.org/10.5005/jp/books/14191_16.
Full textGogoi, Javin. "pH Meter." In Simplified Practical Manual of Biochemistry, 62. Jaypee Brothers Medical Publishers (P) Ltd., 2015. http://dx.doi.org/10.5005/jp/books/12488_12.
Full textEzekeil Bwadi, Benjamin, Mohammed Bakoji Yusuf, Ibrahim Abdullahi, Clement Yakubu Giwa, and Grace Audu. "Analysis of Ground Water from Selected Sources in Jalingo Metropolis, Nigeria." In Water Quality - Factors and Impacts [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99082.
Full textConference papers on the topic "PH-meter"
Rehman, Rabiya, and Murtaza Halai. "Conceptual model of digital pH meter in telemedicine." In 2011 IEEE 14th International Multitopic Conference (INMIC). IEEE, 2011. http://dx.doi.org/10.1109/inmic.2011.6151517.
Full textBishnoi, Sandra, Carly Levin, Christopher Rozell, Bruce Johnson, Don Johnson, and Naomi Halas. "All-optical nanoscale pH meter: a plasmonic nanodevice with quantifiable output." In 2006 IEEE LEOS Annual Meeting. IEEE, 2006. http://dx.doi.org/10.1109/leos.2006.279067.
Full textBasak, Setu, Joyonto Kumar Roy, Md Rakybuzzaman Ratan, and Syed Akhter Hossain. "Evaluation of proposed pH meter in determining the amount of soil supplement needed for IRRI-28." In 2019 5th International Conference on Advances in Electrical Engineering (ICAEE). IEEE, 2019. http://dx.doi.org/10.1109/icaee48663.2019.8975422.
Full textMusenko, A. A. "MEASUREMENT OF NITRATES - IONS IN WATER AFTER EG PROCESSING." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.57-60.
Full textSyafiq N, Muhammad, Shaharuddin MS, and Zaenal Abidin. "Nitrate in Groundwater and Health Risk Assessment: A Cross-Sectional Study in Three Villages in Tanah Merah District, Kelantan, Malaysia During Paddy Pre-Planting Season." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.01.27.
Full textBeauregard, Yannick, and Andrea Mah. "Assessing Soil Corrosivity for Buried Structural Steel." In 2020 13th International Pipeline Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/ipc2020-9285.
Full textTyurin, V., O. Bakhovskaya, M. Bakhovskaya, V. Domakhina, A. Kokh, and O. Maslovskaya. "FEATURES OF SPATIAL ASSESSMENT OF SALT POLLUTION USING A CONDUCTIVITY METER (BOG IN SURGUT LOWLAND, WESTERN SIBERIA)." In Prirodopol'zovanie i ohrana prirody: Ohrana pamjatnikov prirody, biologicheskogo i landshaftnogo raznoobrazija Tomskogo Priob'ja i drugih regionov Rossii. Izdatel'stvo Tomskogo gosudarstvennogo universiteta, 2020. http://dx.doi.org/10.17223/978-5-94621-954-9-2020-57.
Full textReports on the topic "PH-meter"
Sopok, Samuel. Determination of Phosphoric and Sulfuric Acids in Polishing Solutions by Acid-Base Titration Using a pH Meter. Fort Belvoir, VA: Defense Technical Information Center, November 1989. http://dx.doi.org/10.21236/ada216327.
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