Academic literature on the topic 'Inductive flowmeter'

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Journal articles on the topic "Inductive flowmeter"

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Fiala, Pavel, Tomas Jirku, and I. Behunek. "Numerical Model of Inductive Flowmeter." PIERS Online 3, no. 5 (2007): 704–8. http://dx.doi.org/10.2529/piers061006093241.

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Drexler, P., P. Fiala, R. Kadlec, P. Londak, T. Madrova, M. Klima, and J. Zukal. "Numerical modeling and experimental verification of a low fluid flow inductive flowmeter." Flow Measurement and Instrumentation 78 (April 2021): 101876. http://dx.doi.org/10.1016/j.flowmeasinst.2020.101876.

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Bera, S. C., J. K. Ray, and S. Chattopadhyay. "A modified inductive pick-up type technique of measurement in a vortex flowmeter." Measurement 35, no. 1 (January 2004): 19–24. http://dx.doi.org/10.1016/j.measurement.2003.08.019.

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Osadchuk, A. V., V. S. Osadchuk, I. A. Osadchuk, D. R. Ilchuk, and G. A. Pastushenko. "Solid state radio-measuring optical-frequency transducer of gas flow rate." Physics and Chemistry of Solid State 22, no. 2 (April 20, 2021): 224–32. http://dx.doi.org/10.15330/pcss.22.2.224-232.

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The paper presents a study of a solid state radio-measuring optical-frequency transducer of gas consumption based on a transistor structure with a negative differential resistance. A mathematical model of a solid state radio-measuring optical-frequency flowmeter was developed, which made it possible to obtain the conversion function and the sensitivity equation. The solid state radio-measuring optical-frequency gas flowmeter is based on a transistor structure with a negative differential resistance, consisting of a HEMT field-effect transistor and a bipolar transistor with a passive inductive element. When replacing the passive inductance with an active inductive element, the transducer can be completely integrated. The negative differential resistance formed by the parallel connection of the impedance with the capacitive component on the collector-drain electrodes of the transistor structure and inductance leads to the occurrence of electrical oscillations in the oscillator circuit. Theoretical and experimental studies have shown that with an increase in gas consumption from 0 l/h to 4 l/h, the generation frequency decreases from 812.65 MHz to 811.62 MHz at a supply voltage of 3.3 V, and at a supply voltage of 3.8 V from 813.00 MHz to 811.80 MHz. It is shown that by choosing a constant voltage power supply mode, it is possible to obtain an almost linear dependence of the generation frequency on the gas flow rate and choose channels for transmitting measurement information. The obtained theoretical and experimental studies are in good agreement, the relative error does not exceed 2.5 %.
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Tozzi, Piergiorgio, Audrey Maertens, Jonathan Emery, Samuel Joseph, Matthias Kirsch, and François Avellan. "An Original Valveless Artificial Heart Providing Pulsatile Flow Tested in Mock Circulatory Loops." International Journal of Artificial Organs 40, no. 12 (November 8, 2017): 683–89. http://dx.doi.org/10.5301/ijao.5000634.

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Purpose We present the test bench results of a valveless total artificial heart that is potentially compatible with the pediatric population. Methods The RollingHeart is a valveless volumetric pump generating pulsatile flow. It consists of a single spherical cavity divided into 4 chambers by 2 rotating disks. The combined rotations of both disks produce changes in the volumes of the 4 cavities (suction and ejection). The blood enters/exits the spherical cavity through 4 openings that are symmetrical to the fixed rotation axis of the first disk. Mock circulatory system: The device pumps a 37% glycerin solution through 2 parallel circuits, simulating the pulmonary and systemic circulations. Flow rates are acquired with a magnetic inductive flowmeter, while pressure sensors collect pressure in the left and right outflow and inflow tracts. In vitro test protocol: The pump is run at speeds ranging from 20 to 180 ejections per minute. The waveform of the pressure generated at the inflow and outflow of the 4 chambers and the flow rate in the systemic circulation are measured. Results At an ejection rate of 178 min−1, the Rolling Heart pumps 5.3 L/min for a systemic maximal pressure gradient of 174 mmHg and a pulmonary maximal pressure gradient of 75 mmHg. The power input was 14 W, corresponding to an efficiency of 21%. Conclusions The Rolling Heart represents a new approach in the domain of total artificial heart. This preliminary study endorses the feasibility of a single valveless device acting as a total artificial heart.
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Умнова, А. В., А. С. Алейник, В. Е. Стригалев, В. А. Новикова, and А. Н. Аширов. "Датчик скорости потока жидкости на основе волоконных брэгговских решеток с индукционным нагревом." Письма в журнал технической физики 47, no. 17 (2021): 22. http://dx.doi.org/10.21883/pjtf.2021.17.51381.18816.

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The paper presents simulating and experimental results of flowmeter operation with induction heating, where fiber Bragg gratings were used as sensitive elements of temperature sensors. The operating principle of flowmeter based on cross-correlation method. During the experiment, it was detected time response of heat pulse from 0.2 s to 0.5 s that corresponds to a flow velocity range 0.1-0.5 m/s.
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Horner, Boris. "A novel profile-insensitive multi-electrode induction flowmeter suitable for industrial use." Measurement 24, no. 3 (October 1998): 131–37. http://dx.doi.org/10.1016/s0263-2241(98)00048-7.

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Horner, B., F. Mesch, and A. Trächtler. "A multi-sensor induction flowmeter reducing errors due to non-axisymmetric flow profiles." Measurement Science and Technology 7, no. 3 (March 1, 1996): 354–60. http://dx.doi.org/10.1088/0957-0233/7/3/016.

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Houben, Thijs, Inge CM Loonen, Serapio M. Baca, Maarten Schenke, Johanna H. Meijer, Michel D. Ferrari, Gisela M. Terwindt, et al. "Optogenetic induction of cortical spreading depression in anesthetized and freely behaving mice." Journal of Cerebral Blood Flow & Metabolism 37, no. 5 (July 20, 2016): 1641–55. http://dx.doi.org/10.1177/0271678x16645113.

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Cortical spreading depression, which plays an important role in multiple neurological disorders, has been studied primarily with experimental models that use highly invasive methods. We developed a relatively non-invasive optogenetic model to induce cortical spreading depression by transcranial stimulation of channelrhodopsin-2 ion channels expressed in cortical layer 5 neurons. Light-evoked cortical spreading depression in anesthetized and freely behaving mice was studied with intracortical DC-potentials, multi-unit activity and/or non-invasive laser Doppler flowmetry, and optical intrinsic signal imaging. In anesthetized mice, cortical spreading depression induction thresholds and propagation rates were similar for invasive (DC-potential) and non-invasive (laser Doppler flowmetry) recording paradigms. Cortical spreading depression-related vascular and parenchymal optical intrinsic signal changes were similar to those evoked with KCl. In freely behaving mice, DC-potential and multi-unit activity recordings combined with laser Doppler flowmetry revealed cortical spreading depression characteristics comparable to those under anesthesia, except for a shorter cortical spreading depression duration. Cortical spreading depression resulted in a short increase followed by prolonged reduction of spontaneous active behavior. Motor function, as assessed by wire grip tests, was transiently and unilaterally suppressed following a cortical spreading depression. Optogenetic cortical spreading depression induction has significant advantages over current models in that multiple cortical spreading depression events can be elicited in a non-invasive and cell type-selective fashion.
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Orlandi, C., C. J. Dunn, and L. G. Cutshaw. "Evaluation of angiogenesis in chronic inflammation by laser-Doppler flowmetry." Clinical Science 74, no. 2 (February 1, 1988): 119–21. http://dx.doi.org/10.1042/cs0740119.

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1. A non-invasive method is described for the assessment of angiogenesis in chronic inflammation using laser-Doppler flowmetry. 2. Significant increases in capillary blood flow were seen on days 5 and 7 after induction of subcutaneous granulomatous lesions, as compared with control skin. 3. Changes in blood flow were accompanied by changes in pulsatile flow pattern and by an intense angiogenic response observed by light microscopy. 4. The potential application of laser-Doppler flowmetry to quantitative and qualitative studies of evolving angiogenesis in pathological responses is discussed.
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Dissertations / Theses on the topic "Inductive flowmeter"

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Jeleníková, Judita. "Posouzení investičního záměru na výstavbu výrobní haly." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-232898.

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The diploma thesis analyzes the current situation of a flowmeters production company. Embraces the investment plan for a purchase of the construction hall including also calibration equipment. The second purpose is the expected opportunity to realize production in own facility. As the assignment of thesis we should target to formulate recommendations whether to realize the intended investment.
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Ambrož, Martin. "Vyhodnocení provozu tlakové kanalizace vybrané obce." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226890.

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This diploma work deals with description of pressure sewerage networks. First of all is focused on statistical evaluation of pressure sewerage operation in Káraný municipality where was evaluated waste water flow and pressure on sewerage network.
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Conference papers on the topic "Inductive flowmeter"

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Liu, Chang, Shuo Yang, Zhang Cao, and Gang Wang. "3D simulation on influence of insulating contents to contactless electromagnetic induction flowmeter." In THE 7TH INTERNATIONAL SYMPOSIUM ON MEASUREMENT TECHNIQUES FOR MULTIPHASE FLOWS. AIP, 2012. http://dx.doi.org/10.1063/1.3694713.

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Horner, B. "Accurate measurement of asymmetric flow by means of a multi-electrode induction flowmeter." In IEE Colloquium on Advances in Sensors for Fluid Flow Measurement. IEE, 1996. http://dx.doi.org/10.1049/ic:19960571.

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Lee, Gija, Seokkeun Choi, Sungwook Kang, Samjin Choi, Jeonghoon Park, Dong Hyun Park, Youngho Park, Kyungsook Kim, Bermseok Oh, and Hunkuk Park. "Changes in Extracellular Glutamate Release on Repetitive Transient Occlusion in Global Ischemia Model." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206602.

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During the operation, surgeons in neurosurgical area usually performed the multiple temporary occlusions of parental artery which may induce the neuronal damage. It is generally thought that neuronal damage by cerebral ischemia is associated with extracellular concentrations of the excitatory amino acids. In this experiment, we measured the dynamics of extracellular glutamate release in 11 vessel occlusion (VO) model during repeated within short interval. Changes in cerebral blood flow were monitored by laser-Doppler flowmetry simultaneously with cortical glutamate level measured by amperometric biosensor. During ischemia, the peak level of glutamate release was gradually decreased as 112.38±26.21 μM in first period, 82.63±18.50 μM in second period, and 48.58±11.89 μM in third period. The time interval between the ischemia induction and the beginning of glutamate release was increased as 106.7 ± 10.89 (sec) at first attack, 139.11 ± 3.87 (sec) in second attack, 169.00 ± 14.56 (sec) in third ischemic period. From the results of real-time monitoring about glutamate release in 11-VO model during repetitive ischemic episode, it was demonstrated that repetitive ischemia induced less glutamate release from neuronal cell than single ischemia due to endogeneous protective mechanism which delayed glutamate release time in later ischemic injury.
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