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Dissertations / Theses on the topic 'Functioning of biological systems'

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1

Gerson, Jessica. "The relation between biological age, intraindividual variability, and central nervous system functioning in older adults /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1203581591&sid=21&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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2

Kohutek, Jodi Lynn. "Long-term effects of 3,4- Methylenedioxymethamphetamine (MDMA) on serotonergic and dopaminergic functioning." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2305.

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Methylenedioxymethamphetamine (MDMA) popularly known as "Ecstasy" continues to gain popularity as a recreational drug that has been shown to increase serotonin and dopamine levels. The present study has demonstrated that repeated exposure to MDMA produces long-term damage to serotonergic and dopaminergic neurons in various regions of the rat brain.
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3

Ткаченко, Е. Н., Віктор Миколайович Супрун, Виктор Николаевич Супрун та Viktor Mykolaiovych Suprun. "Моделирование биологических систем с применением принципа квазирегулярности". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/10553.

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4

Kalkeren, Antje Afien van. "Stress-induced decrease of intestinal barrier functioning: a general biological phenomenon?" [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/65661.

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5

Fan, Peng. "Miniaturised biological diagnostic systems." Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6856/.

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6

Perry, Carole Celia. "Silicification in biological systems." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:ae665ac4-63eb-4963-845a-d2db6aea31a6.

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This thesis is concerned with the formation and structure of silicified deposits in biology. The major system studied is silicified macrohairs from the lemma of the grass Phalaris canariensis L. The macrohairs consist of silica and polysaccharides. Chemical and structural studies on the mineral phase utilised electron microscopy (transmission (TEM), scanning (SEM) and ultra high resolution (HRTEM)), energy disoersive X-ray analysis (EDXA), solid state nuclear magnetic resonance ( ᷣ⁹ Si nmr), infrared spectroscopy, birefringence and nitrogen adsorption experiments. Results showed that the sili
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7

Аврунін, О. Г., L. A. Averyanova, V. M. Golovenko, and O. Sklyar. "E-Learning of Functioning Principles Medical Intrascopy Systems." Thesis, Varna, Bulgaria, 2007. http://openarchive.nure.ua/handle/document/8276.

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8

Roberts, C. A. "Neurophysiological correlates of ecstasy/MDMA use on executive functioning." Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4524/.

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The purpose of this thesis was to assess the integrity of the serotonin system, by measuring the neurophysiological response to tasks that measure executive functions, and neuroendocrine function in ecstasy users and non-users. Each of the proposed executive functions outlined in Miyake et al.’s (2000) conceptual framework (inhibition, switching and updating) as well as the addition of access to semantic/long term memory made by Fisk and Sharp (2004), was assessed using behavioural tasks in combination with EEG and fNIRS. Behavioural performance between ecstasy users and various controls (poly
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9

Reichenbach, Tobias. "Dynamic patterns of biological systems." Diss., lmu, 2008. http://nbn-resolving.de/urn:nbn:de:bvb:19-84101.

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10

Fallon, James Bernard 1975. "Stochastic resonance in biological systems." Monash University, Dept. of Electrical and Computer Systems Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/9024.

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11

Lin, Sijie. "Carbon nanomaterials in biological systems." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1193080346/.

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12

Iannelli, P. "Inertial manifolds in biological systems." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/16129/.

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The focus of this thesis is biological systems whose dynamics present an interesting feature: only some dimensions drive the whole system. In our examples, the dynamics is expressed as ODEs, such that the ith equation depends on all the variables xi = f (x1,...,xi,xi+1,...), so that they cannot be solved by classical methods. The authors in the literature found that one could express the variable of order bigger than N as a function of the first N variables, thus closing the differential equations; the approximations obtained were exponentially close to the nonapproximated result. In Nonlinear
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13

Shim, Sangwoo. "Quantum Dynamics in Biological Systems." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10125.

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In the first part of this dissertation, recent efforts to understand quantum mechanical effects in biological systems are discussed. Especially, long-lived quantum coherences observed during the electronic energy transfer process in the Fenna-Matthews-Olson complex at physiological condition are studied extensively using theories of open quantum systems. In addition to the usual master equation based approaches, the effect of the protein structure is investigated in atomistic detail through the combined application of quantum chemistry and molecular dynamics simulations. To evaluate the therma
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14

Hidayat, Egi. "On Identification of Biological Systems." Doctoral thesis, Uppsala universitet, Avdelningen för systemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-215699.

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System identification finds nowadays application in various areas of biological research as a tool of empiric mathematical modeling and model individualization. A fundamental challenge of system identification in biology awaits in the form of response variability. Furthermore, biological systems tend to exhibit high degree of nonlinearity as well as significant time delays. This thesis covers system identification approaches developed for the applications within two particular biomedical fields: neuroscience and endocrinology. The first topic of the thesis is parameter estimation of the classi
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15

Norville, Julie Erin 1980. "Modular design of biological systems." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/71484.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2012.<br>"February 2012." Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. [153]-191).<br>The focus of my research is the development of technology for building compound biological systems from simpler pieces. I designed BioScaffold parts, a family of variable regions that can be inserted into a DNA sequence so that at a later time another set of pieces can be substituted for each variable. The variable regions are selective so that a particular
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16

Luo, Yang. "Stochastic modelling in biological systems." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610145.

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17

Whittleston, Christopher Stuart. "Energy landscapes of biological systems." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610200.

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18

Lauback, Stephanie Diane. "Magnetic Actuation of Biological Systems." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1494262695434601.

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19

Billing, Alison Emslie. "Modelling techniques for biological systems." Master's thesis, University of Cape Town, 1987. http://hdl.handle.net/11427/21917.

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The objective of this investigation has been to develop and evaluate techniques which are appropriate to the modelling and simulation of biological reaction system behaviour. The model used as the basis for analysis of modelling and simulation techniques is a reduced version of the biological model proposed by the IAWPRC Task Group for mathematical modell ing in wastewater treatment design. This limited model has the advantage of being easily manageable in terms of analysis and presentation of the simulation techniQues whilst at the same time incorporating a range of features encountered with
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20

Santos, Bruno Miguel Ferreira dos. "Bios: Biological input-output systems." Master's thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/2197.

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Mestrado em Engenharia Electrónica e Telecomunicações<br>Este projecto visa a produção de um aparelho portátil para monitorização/análise da actividade cardíaca. Recebendo como entrada o sinal cardíaco (ECG - electrocardiograma), o dispositivo detecta a característica do sinal e, com base nessa característica, averigua se ocorreu alguma anomalia, produzindo um sinal de alarme se tal acontecer. O aparelho em causa tem que ser acessível, ter um baixo consumo energético, e a detecção de anomalias tem de ser efectuada em tempo real. Para que esta ultima condição se verificasse, o software implemen
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21

Winter, Matthias. "Concentrated patterns in biological systems." [S.l. : s.n.], 2003. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11163816.

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22

Trebbi, Bruno <1977&gt. "Theoretical study of biological systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/513/1/TesiBrunoTrebbi.pdf.

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23

Trebbi, Bruno <1977&gt. "Theoretical study of biological systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/513/.

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24

Zamborszky, Judit. "Compositional Modeling of Biological Systems." Doctoral thesis, Università degli studi di Trento, 2010. https://hdl.handle.net/11572/368785.

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Molecular interactions are wired in a fascinating way resulting in complex behavior of bio-logical systems. Theoretical modeling provides us a useful framework for understanding the dynamics and the function of such networks. The complexity of the biological systems calls for conceptual tools that manage the combinatorial explosion of the set of possible interac-tions. A suitable conceptual tool to attack complexity is compositionality, already success-fully used in the process algebra field to model computer systems. We rely on the BlenX programming language, originated by the beta-binders pr
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25

Zámborszky, Judit. "Compositional Modeling of Biological Systems." Doctoral thesis, University of Trento, 2010. http://eprints-phd.biblio.unitn.it/565/1/PhD-Thesis_final.pdf.

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Molecular interactions are wired in a fascinating way resulting in complex behavior of bio-logical systems. Theoretical modeling provides us a useful framework for understanding the dynamics and the function of such networks. The complexity of the biological systems calls for conceptual tools that manage the combinatorial explosion of the set of possible interac-tions. A suitable conceptual tool to attack complexity is compositionality, already success-fully used in the process algebra field to model computer systems. We rely on the BlenX programming language, originated by the beta-binders pr
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26

Battisti, Anna. "Computer Simulation of Biological Systems." Doctoral thesis, Università degli studi di Trento, 2012. https://hdl.handle.net/11572/368453.

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This thesis investigates two biological systems using atomistic modelling and molecular dynamics simulation. The work is focused on: (a) the study of the interaction between a segment of a DNA molecule and a functionalized surface; (b) the dynamical modelling of protein tau, an intrinsically disordered protein. We briefly describe here the two problems; for their detailed introduction we refer respectively to chapter DNA and chapter TAU. The interest in the study of the adsorption of DNA on functionalized surfaces is related to the considerable effort that in recent years has been devoted in d
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27

Battisti, Anna. "Computer Simulation of Biological Systems." Doctoral thesis, University of Trento, 2012. http://eprints-phd.biblio.unitn.it/689/1/Tesi-PhD.pdf.

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This thesis investigates two biological systems using atomistic modelling and molecular dynamics simulation. The work is focused on: (a) the study of the interaction between a segment of a DNA molecule and a functionalized surface; (b) the dynamical modelling of protein tau, an intrinsically disordered protein. We briefly describe here the two problems; for their detailed introduction we refer respectively to chapter DNA and chapter TAU. The interest in the study of the adsorption of DNA on functionalized surfaces is related to the considerable effort that in recent years has been devoted i
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28

Shih, Yu-Keng. "Identifying Protein Functions and Biological Systems through Exploring Biological Networks." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1388676152.

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29

Choosai, Chutinan. "Biological activity in paddy fields : the role of soil engineers in ecosystem functioning." Paris 6, 2010. http://www.theses.fr/2010PA066156.

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Les ingénieurs du sol modifient les propriétés physicochimiques des sols à travares la création de structures biogéniques. Ce travail vise à déterminer le rôle respectif de deux types de structures : les buttes termitiques et les turricules de vers de terre. Les buttestermitiques agissent comme des sites de hute activité boilogique. Ils constituent des refuages pour la macrofaune. Ces buttes sont enrichies en C,K,P et argiles par rapport aux sols environnants. Les vers de terre en accumulant leurs turricules au pied du riz favorise l'hétérogénèïté spatiale. Ces structures biogéniques constitue
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30

Bolderston, Helen. "Acceptance and commitment therapy : cognitive fusion and personality functioning." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/359833/.

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Personality disorders (PDs) are common, chronic, mental health problems. The majority of treatment outcome research, which has focused specifically on Borderline PD, has provided substantial empirical support for Dialectical Behaviour Therapy (DBT; Linehan, 1993), particularly in terms of self-harm reduction. Nevertheless, DBT graduates can continue to experience poor personality functioning across PD diagnostic categories, Axis I disorders, and restricted lives. Acceptance and Commitment Therapy (ACT; Hayes, Strosahl, & Wilson, 1999), might be suitable as a follow-up intervention for DBT grad
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31

Tooze, Alana. "The neurocognitive consequences of non-functioning pituitary adenoma and its treatment." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/941/.

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Patients with pituitary adenoma often report problems with cognitive function. However, the current literature is inconsistent on the types of cognitive deficits that patients experience. Chapter 1 of this thesis reviews the current literature and the questions that are still unanswered concerning the cognitive function of this patient group. Chapter 2 outlines the methodology used to assess the neurocognitive function of a group of patients with non-functioning pituitary adenoma. Chapters 3, 4 and 5 report and discuss the results of this assessment for general intellectual functioning, memory
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32

Remez, Vinogradov Nikita 1985. "Drug design at biological systems level." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/396352.

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The explosion of reductionist approaches at the end of the XXth century allowed for fast and high-throughput data collection in pharmaceutical industry, but did not deliver the expected gain in drug discovery performance. Omics methodologies were able to provide large amounts of information on one-to-one cause-effect relationships, but could not explain some of the complex effects in living organisms and biological systems in general. This Thesis, performed in the premises of an emerging biotech company, represents an attempt to explore the impact of an integrative systems approach to
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33

Li, Weiwei. "Optimal control for biological movement systems." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3205051.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed April 4, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 131-146).
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34

Brenner, Sibylle. "Mechanistic Control of Biological Redox Systems." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518447.

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35

Harish, Arun Mysore. "Nanomechanical cantilever systems for biological sensing." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507138.

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36

Robinson, Alexander Joseph. "Magnetic field effects on biological systems." Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.543006.

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37

Tessmer, Ingrid. "Single molecule interactions in biological systems." Thesis, University of Nottingham, 2003. http://eprints.nottingham.ac.uk/10023/.

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The interactions of biological molecules are traditionally investigated using ensemble techniques. These provide information on the molecular behaviour based on averaged data resulting from collective ensemble properties. While this has enabled the resolution of structure and function of many proteins and other biomolecules, an understanding of how and why the molecules go about structural changes and modulate inter- and intra-molecular interactions is difficult to gain using these approaches. More recently, single molecule techniques have evolved. These allow us to follow the behaviour of the
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38

Humphreys, Paul Nigel. "Biological denitrification in activated sludge systems." Thesis, London South Bank University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303974.

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39

Bell, Alexander Charlton. "Formal computational models of biological systems." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301423.

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40

Fryer, M. J. "Light-induced damage to biological systems." Thesis, University of Essex, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238538.

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41

Lewis, Randy Stewart. "Nitric oxide kinetics in biological systems." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/36947.

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42

Preto, Jordane. "Long-range interactions in biological systems." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4053.

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L'auto-organisation des organismes vivants est d'une complexité et d'une efficacité étonnantes. Plus précisément, les systèmes biologiques abritent un nombre gigantesque de réactions très spécifiques qui nécessitent que la bonne biomolécule se retrouve à la bonne place, dans le bon ordre et en un temps suffisamment court pour permettre le fonctionnement cellulaire, et au-delà la vie cellulaire. D'un point de vue dynamique, cela pose la question fondamentale de savoir comment les biomolécules trouvent efficacement leur(s) cible(s) spécifique(s), ou encore, quels types de forces rassemblent tous
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43

Sudağıtan, Mert Güneş Hatice. "Test of biomaterials in biological systems/." [s.l.]: [s.n.], 2001. http://library.iyte.edu.tr/tezler/master/biyoloji/T000021.pdf.

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44

Gibson, Michael Andrew Bruck Jehoshua. "Computational methods for stochastic biological systems /." Diss., Pasadena, Calif. : California Institute of Technology, 2000. http://resolver.caltech.edu/CaltechETD:etd-05132005-154222.

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45

Ackerman, Joseph J. H. "Diffusion sensitive MR in biological systems." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-184533.

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46

Scano, Paola. "Theoretical investigations on some biological systems." Thesis, University of St Andrews, 1997. http://hdl.handle.net/10023/15455.

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In this thesis molecular properties of different biological systems are studied by means of Quantum Mechanical methods. After a brief introduction, the basic theory of the methods here used is presented in Chapter 1. In Chapter 2 the heats of formation and the ionization potentials of some carcinogenic compounds such as Polycyclic Aromatic Hydrocarbons are studied and compared with experimental data. The methods used are the semiempirical methods with the AM1 and PM3 Hamiltonians. The results show that the experimental heats of formation are better reproduced by PM3, while as far as the ioniza
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47

West, H. K. "Competing divalent cations in biological systems." Thesis, University of Worcester, 2001. http://eprints.worc.ac.uk/7188/.

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48

Heil, Katharina Friedlinde. "Systems biological approach to Parkinson's disease." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31043.

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Parkinson’s Disease (PD) is the second most common neurodegenerative disease in the Western world. It shows a high degree of genetic and phenotypic complexity with many implicated factors, various disease manifestations but few clear causal links. Ongoing research has identified a growing number of molecular alterations linked to the disease. Dopaminergic neurons in the substantia nigra, specifically their synapses, are the key-affected region in PD. Therefore, this work focuses on understanding the disease effects on the synapse, aiming to identify potential genetic triggers and synaptic PD a
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49

Libis, Vincent. "New inputs for synthetic biological systems." Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCC127/document.

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Les chercheurs en biologie de synthèse programment l’ADN pour construire des systèmes biologiques capables de répondre à certaines conditions de manière prédéfinie. Cette capacité pourrait avoir un impact sur plusieurs domaines, de la médecine à la fermentation industrielle. Le traitement de signal par des circuits biologiques synthétiques est en train d’être démontré à large échelle, mais hélas la variété des signaux d’entrée capables de contrôler ces circuits est pour l’instant limitée. Ce manque de diversité est un obstacle majeur au développement de nouvelles applications car en général ch
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Sharma, A. "Modelling biological systems: a fractal approach." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1991. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3009.

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