Relevant bibliographies by topics / Detection of QRS complexes / Dissertations / Theses
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Dissertations / Theses on the topic 'Detection of QRS complexes'

Author: Grafiati
Published: 28 June 2021
Last updated: 18 February 2022

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1

Koc, Bengi. "Detection And Classification Of Qrs Complexes From The Ecg Recordings." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610328/index.pdf.

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Electrocardiography (ECG) is the most important noninvasive tool used for diagnosing heart diseases. An ECG interpretation program can help the physician state the diagnosis correctly and take the corrective action. Detection of the QRS complexes from the ECG signal is usually the first step for an interpretation tool. The main goal in this thesis was to develop robust and high performance QRS detection algorithms, and using the results of the QRS detection step, to classify these beats according to their different pathologies. In order to evaluate the performances, these algorithms were teste
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2

Malina, Ondřej. "Detekce začátku a konce komplexu QRS s využitím hlubokého učení." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442595.

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This thesis deals with the issue of automatic measurement of the duration of QRS complexes in ECG signals. Special emphasis is then placed on the possibility of automatic detection of QRS complexes while exciting cardiac tissue with a pacemaker. The content of this work is divided into four logical units, where the first part deals with the heart as an organ. It describes the origin and spread of excitement in the heart, its possible pathologies and their manifestations in ECG recording, it also deals with pacing and measuring ECG recording during simultaneous pacing. The second part of the th
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3

Hráček, Roman. "Softwarový balík pro frekvenční metody detekce QRS komplexu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221390.

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4

Engström, Magnus, and Nadia Soheily. "EKG-analys och presentation." Thesis, KTH, Data- och elektroteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154539.

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Tolkningen av EKG är en viktig metod vid diagnostisering av onormala hjärttillstånd och kan användas i förebyggande syfte att upptäcka tidigare okända hjärtproblem. Att enkelt kunna mäta sitt EKG och få det analyserat och presenterat på ett pedagogiskt sätt utan att behöva rådfråga en läkare är något det finns ett konsumentbehov av. Denna rapport beskriver hur en EKG-signal behandlas med olika algoritmer och metoder i syfte att detektera hjärtslag och dess olika parametrar. Denna information används till att klassificera varje hjärtslag för sig och därmed avgöra om användaren har en normal ell
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Klingspor, Måns. "Hilbert Transform : Mathematical Theory and Applications to Signal processing." Thesis, Linköpings universitet, Matematik och tillämpad matematik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-122736.

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The Hilbert transform is a widely used transform in signal processing. In this thesis we explore its use for three different applications: electrocardiography, the Hilbert-Huang transform and modulation. For electrocardiography, we examine how and why the Hilbert transform can be used for QRS complex detection. Also, what are the advantages and limitations of this method? The Hilbert-Huang transform is a very popular method for spectral analysis for nonlinear and/or nonstationary processes. We examine its connection with the Hilbert transform and show limitations of the method. Lastly, the con
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6

Brandejs, Jakub. "Detekce parametrů repolarizace ze signálu EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220848.

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A T wave peak and offset detector based on an unpublished lead transformation that can be briefly described as multilead linear regression was proposed and implemented afterwards. Potential of the transformation as a useful QRS detection tool was revealed later on. Proposed QRS detector was put to the test of CSE database. Results were compared with work of other authors. Results of T wave peak and offset detector were introduced in visual way.
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Hanzelka, Adam. "Rozměřování experimentálních záznamů EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220063.

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This master's thesis deals with an analysis of principles of ECG signals detection and delineation. The theoretical part describes heart electrophysiology and electrocardiography basics. Next, the most important QRS detection and ECG delineation algorithms are introduced. Especially the wavelet transform methods are described. In the practical part proper delineation algoriythm was realized. It was tested on the standard CSE database, then it was modified on data of isolated rabbit heartsand the results are published in the conclusion.
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8

Bajgar, Jiří. "Detekce P vlny v EKG signálech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221317.

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The aim of this diploma thesis is to introduce methods of detection of the QRS complex and the subsequent detection of P waves. The intention is to create a program by specified method in the software Matlab which will be able to implement this method. The thesis describes the basic and important methods of detection and subsequent algorithm to detect P waves. Solution of the algorithm is tested on real data. It also describes the automatic signal evaluation and the results of this automatic function.
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9

Bucsuházy, Kateřina. "Rozměření experimentálních záznamů EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221318.

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This master thesis deals with QRS complex detection and ECG delineation. The theoretical part of this work describes wavelet transform, some of QRS detection approaches and some of ECG delineation approaches. For algorithm realization in Matlab is used redundant dyadic discrete wavelet transform. Algorithm is designed for experimental electrocardiograms of isolated rabbit hearts and it is evaluated through manually determined references.
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10

Zaeid, Jabar, and Andreas Lind. "Utveckling av ny teknik för hjärtpulsdetektion." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211571.

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In this thesis we suggest a technique for detecting pulses by signal processing of a raw ECG signal registered from 4 electrodes located on the left upper arm. The signal processing is performed in Matlab and consists of normalization, lowpass filtering, highpass filtering, derivation, squaring and a moving average window to reduce interference. The technology is capable of extracting periods between heartbeats after an implemented detection algorithm. The thesis also includes reflections on the types of interferences that may affect an electrical development equipment and also methods of how
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11

Hejč, Jakub. "Rozměřování experimentálních záznamů EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220336.

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This thesis deals with a proposition of an algorithm for QRS complex and typical ECG waves boundaries detection. It incorporates a literature research focused on heart electrophysiology and commonly used methods for ECG fiducial points detection and delineation. Out of the presented methods an algorithm based on a continuous wavelet transform is implemented. Detection and delineation algorithm is tested on CSE standard signal database towards references determined both manually and automatically. Obtained results are compared to other congenerous methods. The diploma thesis is further concerne
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12

Zedníček, Vlastimil. "Detekce QRS založená na vlnkové transformaci." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220878.

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This thesis deals with implementation of detector QRS complex with use of wavelet transform. The first part is focused on formation and possibility to measure cardiac activity. The other part of thesis we will familiarise with the different possibilities of detection QRS complex and we intimately focus on wavelet transform that will be used for a project of detection QRS complex. The practical part of thesis focuses on the project of detector in programming language Matlab and his different setting. This projected detector has been tested with CSE database. Achieved results of projected detect
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13

Janjarasjitt, Suparerk. "A NEW QRS DETECTION AND ECG SIGNAL EXTRACTION TECHNIQUE FOR FETAL MONITORING." Case Western Reserve University School of Graduate Studies / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=case1144263231.

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14

Hanus, Rostislav. "Detekce QRS založená na počítání průchodů nulou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219638.

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This master’s thesis deals with the detection of QRS complex detection using zero crossing counts. QRS detection is an important part of the analysis of ECG signal. From the point of determining the R wave detection is based on the other waves and intervals necessary for the diagnosis of heart. This method is very effective even for very noisy signals. Implementation of the method in Matlab, and the success of detection is tested on the CSE and MIT-BIH database. The optimization algorithm is an optional value for the detector.
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15

Hylmar, Petr. "Detekce QRS založená na počítání průchodů nulou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220865.

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This master's thesis describes basics principles of QRS complex detection. It is focused on QRS detection using zero crossing counts method. There are described princips and program realization of this method. The other part is focused on genetic optimalization algorithm. There are presented obtained optimalization results on standard CSE and MIT-BIH database. The quality of the detector is compared with other authors. The optimalized QRS detector achieves comparable results with other authors. The part of the thesis is graphical user interface which supply view on modified ECG signal and dete
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16

Loviška, David. "Detekce QRS komplexu s využitím vlnkové transformace." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218652.

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The aim of diploma thesis named “QRS detection using wavelet transform” is to simplify and accelerate the work of doctors. This can be achieved by using application for QRS detection, which can use one of four proposed algorithms. Application shows basic informations about inserted electrocardiogram. Part of this program is a graphical window with displayed record and with coloured marks on detected QRS complexes. By another algorythm are marks color-coded due to accurancy percentil of every detected complex. This program is designed for a several hours record from Holter ECG monitoring.
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17

Ieong, Chio In. "ECG QRS complex detection with programmable hardware = 心電圖QRS複合波檢測算法及可編程器件實現". Thesis, University of Macau, 2008. http://umaclib3.umac.mo/record=b1939516.

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18

Spáčil, Jakub. "Optimální detekce hranic QRS komplexu v EKG signálech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218719.

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This diploma thesis deals with location optimal wavelet for detecton charakterics points of QRS complex in ECG signals. The first part of this thesis deals with description of heart, genesis of electric signals on heart and problem of noise. The second part describes the wavelet transform and the designed program and the third part evaluate detection results. The created program is working with 10 ECG signals from the CSE database and is testing 12 different mother wavelets. The program was developed in Matlab environment and is based on the finding zero-points in the transformed signal.
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19

Kocian, Ondřej. "Detekce komplexů QRS s využitím vlnkové transformace." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217974.

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This project investigates methods of construction the wavelet-based QRS-complex detector. QRS-complex detection is very important, because it helps automatically calculate heart rate and in some cases it is used for compression ECG signal. The design of QRS detector can be made with many methods, in this project were mentioned and consequently tested only a few variants. The principle of designed detector used a wavelet-based decomposition of the original ECG signal to several frequency-coded bands. These bands are consequently transformed to absolute values and with the help of the threshold
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20

Syed, Shah Nemath Farhan. "IMPLEMENTATION OF INTERACTIVE REMOTE PHYSIOLOGICAL MONITORING AND FEEDBACK TRAINING SYSTEM." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1164666232.

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21

Ondráček, Vladimír. "Měření QT intervalu v elektrokadiografických záznamech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218650.

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This diploma thesis focuses on determination of the QT interval in ECG. The thoretical part desribes physiology of the heart, electronic activity of the heart and possible methods of ECG measurement. The theoretical part also describes methods of signal processing, the processed signal is then used for determination of the QT interval. The practical part focuses on two chosen methods of QT interval determination and on implementation of the methods in a computer program. The results part is evaluation of measured QT intervals and a comparision of the results with reference values.
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22

Henry, Didier. "Contribution à la détection et à la reconnaissance d'événements dans les signaux biomédicaux : applications à la détection de complexes QRS dans le signal ECG et de complexes K dans le signal EEG." Nancy 1, 1994. http://www.theses.fr/1994NAN10218.

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La détection et la reconnaissance d'événements dans les signaux biomédicaux ECG et EEG font l'objet de ce mémoire. Celui-ci est composé de trois parties. La première est consacrée à une description physiologique des signaux ECG et EEG. Dans la seconde, nous présentons et nous comparons plusieurs méthodes de détection du complexe QRS dans le signal ECG et du complexe K dans le signal EEG, basées sur la reconnaissance de forme. La troisième partie présente une approche plus générale consistant à effectuer la projection du signal étudié suivant une ou plusieurs fonctions élémentaires dépendant de
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Hammond, Maria. "DNA-Mediated Detection and Profiling of Protein Complexes." Doctoral thesis, Uppsala universitet, Molekylära verktyg, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-204861.

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Proteins are the effector molecules of life. They are encoded in DNA that is inherited from generation to generation, but most cellular functions are executed by proteins. Proteins rarely act on their own – most actions are carried out through an interplay of tens of proteins and other biomolecules. Here I describe how synthetic DNA can be used to study proteins and protein complexes. Variants of proximity ligation assays (PLA) are used to generate DNA reporter molecules upon proximal binding by pairs of DNA oligonucleotide-modified affinity reagents. In Paper I, a robust protocol was set up f
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Rörbrink, Malin. "Improving detection of promising unrefined protein docking complexes." Thesis, Linköpings universitet, Bioinformatik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-133633.

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Understanding protein-protein interaction (PPI) is important in order to understand cellular processes. X-ray crystallography and mutagenesis, expensive methods both in time and resources, are the most reliable methods for detecting PPI. Computational approaches could, therefore, reduce resources and time spent on detecting PPIs. During this master thesis a method, cProQPred, was created for scoring how realistic coarse PPI models are. cProQPred use the machine learning method Random Forest trained on previously calculated features from the programs ProQDock and InterPred. By combining some of
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Leung, Ka Ho. "Oligonucleotide-based lunimescent detection platform utilizing iridium (III) complexes." HKBU Institutional Repository, 2015. https://repository.hkbu.edu.hk/etd_oa/163.

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Luminescent transition metal complexes have arisen as viable alternatives to organic dyes for sensory applications due to their notable advantages. This thesis aimed to synthesize different kinds of Ir(III) complexes, explore their interactions with DNAs and investigate their application for the construction of label-free oligonucleotide-based sensing platforms. A series of Ir(III) complexes incorporating a variety of C^N and N^N donor ligands were synthesized and were shown to exhibit G-quadruplex-selective binding properties via emission titration, UV/vis titration, fluorescence resonance en
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26

Richter, Zdeněk. "Vícesvodová rozhodovací pravidla v rozměřování signálů EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219529.

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This work deals with ECG signal measuring and methods of its processing. It compares some of the QRS detection methods and describes some of the testing databases. In this work a detector of QRS complex is realized, it is based on the approach of zero crossings. Next section makes combination of results from separate leads to one, which improves efficiency of detection. One section of this work deals with design and realization delination of ECG signal. In the last part outputs of this delineation are compared with the results of the other authors.
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Toušek, Vojtěch. "Detekce a rozměřování v signálu EKG." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217208.

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Automatic detection and delineation of ECG characteristic points is a basic procedure of any analyze of ECG using computer. This detection is a necessary step to simplify the work of cardiologists to evaluate long ECG records. In this thesis is proposed and evaluate a method of detection and delineation in a single-lead ECG using dyadic wavelet transform followed by correction in pseudo-orthogonal lead system taken from standard 12-lead system. The method uses information about position of positive maximum – negative minimum pair to detect ECG characteristic waves. At first the QRS complex is
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Kalous, Stanislav. "Shluková analýza v oblasti biosignálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217212.

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This diploma thesis deals with cluster analysis for long-term electrocardiograms (ECG) clustering. The linear filtration is used for ECG preprocessing. The ECG sign segmenting in single heart cycles is based on the detection QRS complex and consequently to an application of dynamic time warping algorithms. To an application of all these mentioned processes and to results interpretation, a program called Cluster analysis has been created in the Matlab background. The results of this diploma thesis confirm that cluster analysis is able to distinguish cardiac arrhythmias which are typical with th
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Li, Yelei. "Heartbeat detection, classification and coupling analysis using Electrocardiography data." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1405084050.

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Macková, Pavlína. "EKG biofeedback." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219742.

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The master’s thesis is focused on the possibilities of measuring heart rate of ECG signal and its use in therapeutic game of ECG biofeedback. This thesis describes the way of measuring ECG with acquisition unit Biopac and analyzes signal processing for measurement of heart rate – algorithms of QRS detection, HRV analysis. Realisation of therapeutic is designed for applications in Matlab.
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Al, Abdel Hamid Amer A. G. "Chelation and Detection of Mercury in Aqueous Media." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/AlAbdelHamidAAG2009.pdf.

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Lin, Sheng. "Cyclometalated iridium (III) complexes and their applications in the detection of biomarkers." HKBU Institutional Repository, 2019. https://repository.hkbu.edu.hk/etd_oa/621.

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Luminescent transition metal complexes have arisen as viable alternatives to organic dyes for sensory applications due to their notable advantages. This thesis aimed to synthesize different kinds of iridium(III) complexes, explore their interactions with DNAs and investigate their application for the construction of oligonucleotide-based sensing platforms for important biomarkers. A series of iridium(III) complexes incorporating a variety of C^N and N^N donor ligands were synthesized and were demonstrated to possess G-quadruplex-selective binding properties via emission titration, UV/vis titra
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Řezáč, Petr. "Rozměření signálu EKG pro analýzu TWA." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217734.

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The thesis deals with possibilities of using wavelet transform in the field of surface electrocardiogram (ECG) signals denoising and ECG signals measuring. Several algorithms have been used to detect and estimate T-wave alternans (TWA), such as spectral method (SM), Poincaré Mapping (PM) or correlation method (CM). T-wave alternans, also called repolarization alternans, is a phenomenon appearing in the electrocardiogram as a consistent fluctuation in the repolarization morphology on every-other-beat basis. Electrical TWA has been recognized as a marker of electrical instability, and has been s
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Vítek, Martin. "Automatické rozměření signálů EKG." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-233535.

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This dissertation deals with QRS complex detection and ECG delineation. The theoretical part of the work describes basics of electrocardiography, QRS detection approaches, ECG delineation approaches, the standard CSE database and the wavelet transform theory. The practical part of the work describes designed methods of QRS complex detection and ECG delineation. The designed methods are based on a continuous wavelet transform, appropriate scales, appropriate mother wavelet, cluster analysis and leads transformation. The introduced algorithms were evaluated on the standard CSE database. The obta
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Tennyson, Andrew Gregory. "The detection of nitric oxide and its reactivity with transition metal thiolate complexes." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43767.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2008.<br>Vita.<br>Includes bibliographical references.<br>Nitric oxide (NO) is a molecule that is essential for life and regulates both beneficial and harmful processes. Because this gaseous radical influences many aspects of health and disease, we wish to explore the relationship between NO and physiology/pathophysiology. To this end, we seek to create tools for the fluorescent imaging of NO in vivo. We have adapted an existing small molecule-based sensor for more biologically relevant applications by including it wit
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Mills, Ross Jack. "Autoantibodies in ILD : detection and association of anti-Hsp72 IgG complexes in IPF." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/29615.

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Background Idiopathic pulmonary fibrosis (IPF) is one of a number of interstitial lung diseases (ILDs) that result in extensive and chronic pulmonary fibrosis. In IPF pathology, immunological dysfunction has been identified as a contributing factor to the ongoing fibrotic process, implicating cells and mechanisms of both the innate and humoral immune response. Due to the complex and diverse range of cells and mediators involved in IPF, the pathology is still poorly understood. Evidence of complement activation through the classical pathway in IPF lungs implies a role for IgG in the pathology.
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Milenko, Čanković. "Širina QRS kompleksa kao elektrokardiografski prediktor reperfuzije nakon primarne perkutane koronarne intervencije i veličine akutnog infarkta miokarda sa ST elevacijom." Phd thesis, Univerzitet u Novom Sadu, Medicinski fakultet u Novom Sadu, 2020. https://www.cris.uns.ac.rs/record.jsf?recordId=112570&source=NDLTD&language=en.

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Ishemijska bolest srca najče&scaron;će nastaje kao posledica razvoja aterosklerotskih promena na koronarnim krvnim sudovima koji dovode do suženja lumena i posledičnog pada protoka arterijske krvi u području vaskularizacije. Akutni oblik koronarne bolesti koji zahteva hitnu primenu reperfuzione terapije je ST elevirani infarkt miokarda. EKG ima veliki značaj u postavljanju dijagnoze ali i u proceni uspe&scaron;nosti same reperfuzije. &Scaron;irina QRS kompleksa jedan je od EKG parametara čija dinamika promena može ukazati na uspe&scaron;nost pPKI i veličinu infarktne zone. Evaluacija &scaron;i
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ARNOLD, MARC. "Etude de la genotoxicite de matrices complexes par la detection des adduits a l'adn." Université Louis Pasteur (Strasbourg) (1971-2008), 2000. http://www.theses.fr/2000STR13215.

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L'objectif de ce travail etait d'evaluer la phytogenotoxicite de matrices contaminees artificiellement ou provenant de sites pollues par l'etude de l'induction de modifications primaires de l'adn (ou adduits a l'adn) de ble et de lentille exposes a ces matrices en utilisant la technique de postmarquage au 3 2p. - dans le cas de matrices complexes contaminees artificiellement par des metaux lourds (sol si), un melange de trichlorophenol, pentachlorophenol et phenanthrene (sol sii) ou de benzo(a)pyrene (sol sii'), les resultats sont en faveur d'une genotoxicite des sols si et sii' pour le ble, a
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Moragues, Pons María Esperanza. "Transition metal complexes for chromo-fluorogenic detection of carbon monoxide in environmental and biomedical applications." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/48453.

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La presente tesis doctoral titulada “Complejos metálicos de transición para la detección cromo-fluorogénica de monóxido de carbono en aplicaciones medioambientales y biomédicas” se basa en la utilización de los principios de la Química de la Coordinación para el diseño y desarrollo de nuevos compuestos químicos capaces de detectar monóxido de carbono en aire mediante cambios de color y/o de fluorescencia. La primera familia de sondas colorimétricas que se presenta en el capítulo 3 está basada en unos complejos dinucleares de rodio hexacoordinados con ligandos trifenilfosfina y distinto
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Martin, Lynwill Garth. "Electrochemistry and electrophoresis of mercury cysteine and ditizone complexes." Thesis, Stellenbosch : Stellenbosch University, 2008. http://hdl.handle.net/10019.1/1742.

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Thesis (MSc (Chemistry and Polymer Science))--Stellenbosch University, 2008.<br>There are various mercury species in the environment and their toxicity and availability relies on their chemical form and oxidation states. Inorganic and organic mercury is found to co-exist in water and body tissue of some organisms. Among them inorganic mercury has a lower toxicity than the organic mercury. Methyl mercury (CH3Hg+) is the most toxic species found in the environment because it can enter the food chain accumulating and contaminating humans. Hence the total mercury concentration does not reflec
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Skřížala, Martin. "Využití neuronových sítí v klasifikaci srdečních onemocnění." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217210.

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This thesis discusses the design and the utilization of the artificial neural networks as ECG classifiers and the detectors of heart diseases in ECG signal especially myocardial ischaemia. The changes of ST-T complexes are the important indicator of ischaemia in ECG signal. Different types of ischaemia are expressed particularly by depression or elevation of ST segments and changes of T wave. The first part of this thesis is orientated towards the theoretical knowledges and describes changes in the ECG signal rising close to different types of ischaemia. The second part deals with to the ECG s
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Liao, Jing-Piin. "Investigation of Copper-Natural Ligand Complexes by RP-HPLC Photodiode Array UV-VIS and Fluorescence Detection." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc332502/.

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In this study, reversed phase HPLC with dual UV photodiode (PDA) and fluorescence (FL) detection were used to investigate copper complexes with fulvic, caffeic, vanillic, salicylic, and adipic acids. Application of the RE method provided valuable information on the retention behavior and spectral characteristics of FA and model compounds. Even though the method was only applicable to VA, the use of the PDA detector allowed the UV-V is scanning of the separated peaks. This allowed the comparison between the UV-Vis spectra of uncomplexed species. The overall results provide an experimental frame
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Akhimie, Regina Nicole. "Investigation of Rh2(II,II) complexes for applications in photochemotherapy and mismatch detection." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1511892689942643.

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Beamish, Eric. "Precise Size Control and Noise Reduction of Solid-state Nanopores for the Detection of DNA-protein Complexes." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23569.

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Over the past decade, solid-state nanopores have emerged as a versatile tool for the detection and characterization of single molecules, showing great promise in the field of personalized medicine as diagnostic and genotyping platforms. While solid-state nanopores offer increased durability and functionality over a wider range of experimental conditions compared to their biological counterparts, reliable fabrication of low-noise solid-state nanopores remains a challenge. In this thesis, a methodology for treating nanopores using high electric fields in an automated fashion by applying short
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Yakoubi, Zied. "Détection et évaluation des communautés dans les réseaux complexes." Thesis, Paris 13, 2014. http://www.theses.fr/2014PA132045/document.

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Dans le contexte des réseaux complexes, cette thèse s’inscrit dans deux axes : (1) Méthodologiede la détection de communautés et (2) Evaluation de la qualité des algorithmes de détection de communautés. Dans le premier axe, nous nous intéressons en particulier aux approches fondées sur les Leaders (sommets autour desquels s’agrègent les communautés). Premièrement, nous proposons un enrichissement de la méthodologie LICOD qui permet d’évaluer les différentes stratégies des algorithmes fondés sur les leaders, en intégrant différentes mesures dans toutes les étapes de l’algorithme. Deuxièmement,
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Tidriri, Khaoula. "Fusion de décisions dédiée à la surveillance des systèmes complexes." Thesis, Angers, 2018. http://www.theses.fr/2018ANGE0014/document.

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Le niveau de complexité croissant des systèmes et les exigences de performances et de sûreté de fonctionnement qui leur sont associées ont induit la nécessité de développer de nouvelles approches de surveillance. Les travaux de cette thèse portent sur la surveillance des systèmes complexes, notamment la détection, le diagnostic et le pronostic de défauts, avec une méthodologie basée sur la fusion de décisions. L’objectif principal est de proposer une approche générique de fusion de diverses méthodes de surveillance, dont la performance serait meilleure que celles des méthodes individuelles la
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Davy, Axel. "Modélisation de fonds complexes statiques et en mouvement : application à la détection d'événements rares dans les séries d'images." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLN048/document.

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{La première partie de cette thèse est dédiée à la modélisation d'images ou de vidéos considérés comme des fonds sur lesquels on s'attache à détecter des anomalies. Notre analyse de la littérature de la détection d'anomalie sur une seule image nous a fait identifier cinq différentes familles d'hypothèses structurelles sur le fond. Nous proposons de nouveaux algorithmes pour les problèmes de détection d'anomalie sur seule image, de détection de petites cibles sur un fond en mouvement, de détection de changements sur des images satellitaires SAR (Synthetic Aperture Radar) et de détection de nuag
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Saunders, Gregory David. "The sequestration and detection of aqueous uranium using a novel network polymer." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323692.

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Warnke, Molly Melissa. "Enantiomeric separations of natural compounds and metal complexes and the detection of anions using positive mode electrospray ionization mass spectrometry." [Ames, Iowa : Iowa State University], 2008.

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Joshi, Ubisha. "Characterization of Ionic Liquid As a Charge Carrier for the Detection of Neutral Organometallic Complexes Using Electrospray Ionization Mass Spectrometry." Thesis, University of North Texas, 2012. https://digital.library.unt.edu/ark:/67531/metadc149615/.

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A novel application of ionic liquid as a charge carrier for the analysis and detection of neutral organometallic complexes using a mass spectrometer has been presented. The mass spectrometer detects only charged compounds which raise a difficulty in analyzing a neutral molecule that lacks a basic site to associate with charge. Therefore, an effective way of providing charge has always been an area of keen interest in the field of mass spectrometry. Ionic liquids have a very fascinating property of forming a cation-? interaction with other molecules to give a charged complex. In order to take a
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