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Dissertations / Theses on the topic 'Ion current measurements'

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1

Parri, Lorenzo. "Ion current and exhaust gas composition measurements for combustion monitoring." Doctoral thesis, Università di Siena, 2021. http://hdl.handle.net/11365/1143828.

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The efficiency of combustion processes is assuming nowadays a huge importance, since the energy production, many industrial processes, as well as building heating systems are still mainly based on the combustion of hydrocarbons. The performance of the combustion process depends on many factors and it is a crucial point for the reliability and the efficiency of a plant or a thermal machine that exploits combustion as a primary source of energy. Moreover, the constant increasing of carbon dioxide concentration in atmosphere makes more and more important reducing the emission of this gas as well
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2

Lindqvist, Daniel. "Simulation of Intermittent Current Interruption measurements on NMC-based lithium-ion batteries." Thesis, Uppsala universitet, Strukturkemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-325298.

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The objective of this report was to implement battery cycling and an intermittent current interruption (ICI) method for determining battery resistance into a simple lithium-ion battery model in the finite element methods (FEM) program COMSOL Multiphysics, andevaluate how accurately the model reflects the behaviour of voltage and internal resistance with respect to experimental results. The ICI technique consists of repeating the steps of first having a longer charging period and then having a short current interruption, where the internal resistance is calculated from the voltage drop that occ
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3

Kurian, Febin [Verfasser], Peter [Akademischer Betreuer] [Gutachter] Hülsmann, and Oliver [Gutachter] Kester. "Cryogenic current comparators for precise ion beam current measurements / Febin Kurian ; Gutachter: Peter Hülsmann, Oliver Kester ; Betreuer: Peter Hülsmann." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2015. http://d-nb.info/1125525681/34.

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4

Sellars, Malcolm. "Electric field mill for the simultaneous measurement of electric field strength and ion current diensity." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/22039.

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In the last 20 years, the use of high voltage direct current (HVDC) power transmission has grown considerably. With the increase in the number of HVDC transmission lines and in the transmission voltages, concern has increased as to possible health effects. For research on these health effects to be carried out, it is necessary to measure the electrical environment ofHVDC transmission lines accurately. The electrical environment ofHVDC transmission lines is characterised by: Electric field strength E [Vim];Ion current density J [A/m²] ;Space charge density p [C/m³ ]. Typical values measured un
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5

Merkl, Doris. "Current holes and other structures in motional Stark effect measurements." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971921830.

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6

Wei, Mingsheng. "Measurements of energetic ions and return current effects from high intensity laser plasma interactions." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417100.

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7

Fritioff, Tomas. "Precision Improvements of Penning Trap Mass Measurements Using Highly Charged Ions : Applications to solving current problems in fundamental physics." Doctoral thesis, Stockholms universitet, Fysikum, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-616.

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In my thesis I describe the improvements of the Penning trap mass spectrometer SMILETRAP. The objective of these improvements have been to increase the reliability and the accuracy with which an atomic mass can be measured using highly charged ions. The improvements have been achieved by stabilizing both the electric and magnetic fields of the trap and by improving the technical performance of the trap system. As a result it has been possible to measure accurately the mass of several atoms ranging from hydrogen to mercury using charge states from 1+ to 52+. It was only possible to use the high
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8

Gavoci, Entele <1976&gt. "Elf magnetic field influence on ION Channels studied by Patch Clamp Technique: exposure set up and "Whole Cell" measurements on Potassium currents." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1904/1/Gavoci_Entele_Tesi.pdf.

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The aim of this thesis was to study the effects of extremely low frequency (ELF) electromagnetic magnetic fields on potassium currents in neural cell lines ( Neuroblastoma SK-N-BE ), using the whole-cell Patch Clamp technique. Such technique is a sophisticated tool capable to investigate the electrophysiological activity at a single cell, and even at single channel level. The total potassium ion currents through the cell membrane was measured while exposing the cells to a combination of static (DC) and alternate (AC) magnetic fields according to the prediction of the so-called ‘ Ion Resonanc
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9

Gavoci, Entele <1976&gt. "Elf magnetic field influence on ION Channels studied by Patch Clamp Technique: exposure set up and "Whole Cell" measurements on Potassium currents." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2009. http://amsdottorato.unibo.it/1904/.

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The aim of this thesis was to study the effects of extremely low frequency (ELF) electromagnetic magnetic fields on potassium currents in neural cell lines ( Neuroblastoma SK-N-BE ), using the whole-cell Patch Clamp technique. Such technique is a sophisticated tool capable to investigate the electrophysiological activity at a single cell, and even at single channel level. The total potassium ion currents through the cell membrane was measured while exposing the cells to a combination of static (DC) and alternate (AC) magnetic fields according to the prediction of the so-called ‘ Ion Resonanc
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10

Keika, Kunihiro. "Outflow and charge-exchange losses of the ring-current ions during magnetic storms : estimate based on measurement of energetic ions and neutral atoms." 京都大学 (Kyoto University), 2006. http://hdl.handle.net/2433/144192.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(理学)<br>甲第12109号<br>理博第3003号<br>新制||理||1448(附属図書館)<br>23945<br>UT51-2006-J104<br>京都大学大学院理学研究科地球惑星科学専攻<br>(主査)教授 町田 忍, 教授 家森 俊彦, 教授 淡路 敏之<br>学位規則第4条第1項該当
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11

Carver, Alexander Gilman. "Novel chlorine-based chemistry and implementation hardware for the growth of lithium niobate and related complex metal oxides." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/33987.

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Oxide related research has increased as standard oxides reach their operational limits and new classes of devices are imagined that can only be realized through the use of man-made compounds. Many of these devices require high quality films in order to reach their highest potential. Molecular beam epitaxy (MBE) is poised to become a key producer of high quality oxides. One of the most promising oxides is lithium niobate, LiNbO3, which can potentially deliver novel electronic, optic, and hybrid devices not currently possible. Growing lithium niobate using MBE is difficult. Several concepts
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12

Schnurbusch, Henning. "Measurement of the proton structure from high-Q2 neutral current events in e+p deep inelastic scattering at HERA." [S.l.] : [s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=967657695.

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13

Kaliszczak, Magdalena. "Polarisation chimique de l'interface liquide-liquide vers une cocristallisation contrôlée." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0332.

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La formation contrôlée de cocristaux est un objectif important dans le developpement de médicaments. Ce travail a utilisé l'électrochimie à l'interface entre deux liquides non miscibles (ITIES) pour contrôler la formation de cocristaux. Dans la première partie, le comportement électrochimique de la caféine a été étudié au moyen de la voltampérométrie cyclique (CV) et de la voltampérométrie à courant alternatif (ACV). La caféine est un cation hydrophile donc, elle a été transférée à un potentiel hautement positif. Le transfert de la caféine (CaffH+) a été vérifié à différents pH et le pH 2 a ét
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14

Kryl, Marek. "Zaměření části bývalého hostince Peklo v Tišnově." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-414310.

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The diploma thesis deals with measurement of former Peklo inn in Tišnov and creates a documentation of its building. Measurement is connected to the binding reference system – the S-JTSK coordinate sytem and Baltic Vertical Datum Bpv. The thesis countains a description of the place of interest and history of the building, preparatory work, choice of instruments and tools. In the next part measurement, processed of recorded data, requirements of creating documentation of the ground plan and vertical section, testing results of the work, are described. The thesis countains ground plan of the cel
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15

Zdražil, Lukáš. "Návrh a optimalizace speciálního nízkoúrovňového zesilovače pro měření vzdušných iontů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-433468.

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This Master thesis deals with low-current measurement in order of picoamps up to a few tens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components. The aim of the thesis is to design and implement a precise low-level amplifier for the purposes of a
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16

Yeh, Hsin-Yin, and 葉昕穎. "The measurement and analysis about ion current of single atom tip." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64069029088621941590.

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碩士<br>國立臺灣師範大學<br>物理學系<br>101<br>This study is about measuring ion current of single atom tip by using micro-channel plat and Faraday cap with field ion microscope and improving its application. The experiment has two parts : iridium covered tungsten tip and pure iridium tip. For iridium covered tungsten tip, after annealing to 870K~1080K several times,(111) would facet to a pyramid structure with one-atom-top. Because there is only one atom on the top, the field ion current would befocus. In this study, we change the tip radius to investigate how to raise the field ion current per unit a
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17

Peterson, Byron Jay. "The measurement of parallel electron currents and induced ion flows in the interchangeable module stellarator." 1994. http://catalog.hathitrust.org/api/volumes/oclc/31514126.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1994.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 170-175).
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