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Dissertations / Theses on the topic 'Plasmid production'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

O'Mahony, Kevin. "Large scale plasmid production /." [S.l.] : [s.n.], 2005. http://library.epfl.ch/theses/?nr=3320.

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2

Yap, Wee Ching Melvyn. "Analysis of retroviral production in murine leukaemia virus." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325497.

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3

Bower, Diana M. (Diana Morgan). "Development of new tools for the production of plasmid DNA biopharmaceuticals." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76475.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 96-104).<br>DNA vaccines and gene therapies that use plasmid DNA (pDNA) as a vector have gained attention in recent years for their good safety profile, ease of manufacturing, and potential to treat a host of diseases. With this interest comes increased demand for high-yield manufacturing processes. Overall, this thesis aims to develop new, innovative tools for the production of plasmid DNA biopharmaceuticals. As one pa

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4

Hales, Barbara A. "Plasmid determined fimbrial production responsible for bacterial colonization of the urinary tract." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/23962.

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5

Cheng, Chinyuan. "Engineering strategies to optimize plasmid stability and protein production in recombinant Saccharomyces cerevisiae fermentation /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779914824623.

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6

Chamsart, Saedthawat. "A cell lysis reactor for the production of plasmid DNA from recombinant E.coli for gene therapy." Thesis, University of Birmingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366017.

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7

Pensri, Charoensit. "Development of inhibition methods for pro-inflammatory cytokine production induced by cationic carrier/plasmid DNA complex." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/126605.

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8

Robinson, Susan Clare. "Enhanced production of a recombinant, thermostable alpha-amylase in Streptomyces lividans : effects of plasmid construction and culture conditions." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393582.

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9

García, Mark Megan Olga. "Production and validation of anti-HCV antibodies for viral neutralization." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-278578.

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Hepatitis-C Virus (HCV) remains the leading cause of liver transplant in the US and the UK, and the World Health Organization (WHO) estimates that 71 million people are infected worldwide. A vaccine would drastically impact the healthcare-associated burdens that HCV causes globally. The objective of this master’s thesis project is to produce human antibody (IgG) against HCV. This project will focus on the monoclonal antibodies (mAbs) HEPC3, AR3C, HEPC74, and HCV1. These four antibodies have been isolated from patients who have successfully cleared the infection, and their sequences and structu

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10

Andersson, Christin. "Production and delivery of recombinant subunit vaccines." Doctoral thesis, KTH, Biotechnology, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3027.

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<p>Recombinant strategies are today dominating in thedevelopment of modern subunit vaccines. This thesis describesstrategies for the production and recovery of protein subunitimmunogens, and how genetic design of the expression vectorscan be used to adapt the immunogens for incorporation intoadjuvant systems. In addition, different strategies fordelivery of subunit vaccines by RNA or DNA immunization havebeen investigated.</p><p>Attempts to create general production strategies forrecombinant protein immunogens in such a way that these areadapted for association with an adjuvant formulation wer

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11

Yau, S. Y. "An investigation on E. coli host strain influences and strategies to improve supercoiled plasmid DNA production for gene therapy and vaccination." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/668715/.

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The growing demand for quick and effective methods of producing large amounts of plasmid DNA for human therapy and vaccination has increased the practical challenges associated with process optimisation to improve supercoiled plasmid DNA yields obtained through current methods. The supercoiled isoform of DNA is the preferred form for use in gene therapy and vaccination as this isoform is known to produce higher levels of in vitro and in vivo transgene expression than other forms of plasmid DNA. This study was designed to investigate whether different strategies can be implemented early on in a

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12

Yoshida, Hiroyuki. "Analysis of production profiles of inflammatory cytokine and type I interferon induced by plasmid DNA in cultured cells and in mice." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124069.

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13

Aune, Trond Erik Vee. "High level recombinant protein production in Escherichia coli by engineering broad-host-range plasmid vectors containing the Pm/xylS expression cassette." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bioteknologi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-2096.

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The use of recombinant gene expression for industrial protein production has since the early 1970s become a multi-billion industry. Despite many years of intensive research, no universal expression system exists that can be used for high-level industrial production of any given recombinant gene. Because of this, much work must be done prior to production to identify the ideal production organism for the gene of interest, usually followed by optimization of an expression system useful in this organism. One of the most popular production organisms is the gram-negative bacterium Escherichia coli,

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14

Colina, Delacqua Ligia Maria. "Modélisation/diagnostic de production de poussières dans un plasma H₂au contact d’une cible C/W : Contribution à l’étude des interactions plasma/surface dans les machines de fusion thermonucléaire." Paris 13, 2012. http://scbd-sto.univ-paris13.fr/intranet/edgalilee_th_2012_colina_delacqua.pdf.

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Ce travail de thèse a porté sur la caractérisation expérimentale d’un plasma d’hydrogène au contact de cibles de carbone ou tungstène généré dans le réacteur microonde multi dipolaire CASIMIR II. Ce dernier, développé pendant ce projet de thèse, a pour objectif de simuler quelques des processus plasma/surface ayant lieu sous le dome du divertor et dans les régions à l’ombre du plasma (SOL) dans les tokamaks. CASIMIR II se compose de 16 sources dipolaires microondes disposées de manière circulaire le long du périmètre de l’enceinte à vide de manière à obtenir un plasma basse pression (10⁻³ à 10

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15

Wadstein, Victor. "Circular Economy in Plastic Production : The recycling challenges and solutions in plastic production." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264551.

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The consequences of the linear economy of plastic production has started to show. Media reports of "plastic seas," beaches full of waste, and habitats and environments destroyed. The question on how to make plastic production more circular have been a hot topic. Every year 311 million tonnes of plastic gets produced around the world. The plastics that can be recycled are thermoplastics. 70% of all produced plastic is made from five different plastic materials, PVC, PET, EPS, PP, and HDPE. Of the total of 311 million tonnes 87 million tonnes of that plastic is plastic packages for household con

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16

Moussaoui, Roba. "Study of negative ions surface production in cesium-free H2 and D2 plasmas." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0328/document.

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Cette thèse porte sur l’étude de la production de surface des ions négatifs (IN) pour des applications dans la fusion thermonucléaire. Ce travail a été réalisé à l'aide d'une source plasma PHISIS. Les IN formés en surface de l'échantillon sont collectés et analysés avec un spectromètre de masse (SM). La fonction de la distribution en énergie des ions négatifs FDEIN est mesurée. Dans cette thèse, une technique de polarisation DC pulsée est introduite pour permettre l'étude de la production d'IN en surface sur des échantillons isolants comme le diamant. Un modèle qui calcule le taux de changemen

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17

Aleiferis, Spyridon. "Étude expérimentale de la production d’ions négatifs H- par des plasmas à la résonance cyclotron électronique." Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI032/document.

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Cette thèse porte sur l'étude expérimentale de la production d’ions négatifs (H-) par des sources multi-dipolaires microondes (2.45 GHz) fonctionnant à la Résonance Cyclotron des Electrons (RCE). Les sources H- sont nécessaires aux accélérateurs de haute énergie et surtout pour les systèmes d’injection de neutres à haute énergie pour le chauffage des plasmas de fusion. Pour cette étude, deux sources (Prometheus I et ROSAE III) ont été conçues, fabriquées et étudiées. Ces deux sources sont munies de réseaux 2D des sources multi-dipolaires. Il est prouvé que la formation des ions négatifs dans c

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18

O'Brien, Christopher J. (Christopher John). "Hydrogen production via plasma reformers." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38123.

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19

Legault, Lawrence E. "The production of hot electrons by the two-plasmon decay instability in a CO2 laser plasma interaction." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26438.

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The generation of hot electrons characterizing the two-plasmon decay (TPD) instability is investigated experimentally both in and out of the plane of polarization of a CO₂ laser incident on an underdense gas target. The results presented here show that, for high intensities (I > ~ 3.5 x 10¹³ W/cm² for a helium target, 1 > ~ 5.5 x 10¹³ W/cm² for a nitrogen target), the electron plasma waves (EPW's) generated by the TPD instability are modified by the electron decay instability (EDI). The relatively short scale lengths at the onset of TPD for these high intensities (<~0.125mm) cause the EPW's p

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20

Ruban, Anna. "Life Cycle Assessment of Plastic Bag Production." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179846.

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The main focus of this report is to establish a comparative study of traditional and biodegradable vest-plastic bag production through the utilization of a life cycle assessment (LCA) approach. The measurements were made for the Ukrainian limited liability company “Polymer”, as a representative manufacturer, in order to calculate the environmental impact of plastic bag manufacturing, and identify the more environmental friendly item. This research is based on a literature review of the special characteristics of life cycle assessment and its methods and methodologies, a field study, which incl

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21

Podestà, Mario. "Plasma production and transport in a simple magnetised toroidal plasma /." Lausanne : EPFL, 2007. http://library.epfl.ch/theses/?nr=3765.

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Thèse Ecole polytechnique fédérale de Lausanne EPFL, no 3765 (2007), Faculté des sciences de base SB, Section de physique, Centre de recherches en physique des plasmas CRPP (CRPP Association Euratom CRPP-AE). Dir.: Ambrogio Fasoli.

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22

Covas, Jose A. C. G. "Processing of UPVC in single and twin screw extruders." Thesis, Loughborough University, 1985. https://dspace.lboro.ac.uk/2134/11942.

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The processing characteristics of PVC compounds play a major role on the ability of the equipment to control the final properties of the product. Therefore, information on the effect of processing conditions on such characteristics. and its influence on the final properties can lead to an optimization of the extrusion process. In this work. a statistically based experimental design was used in order to investigate the role of the operating conditions on the extrusion of a simple lead based PVC formulation. Both a single and a twin screw extruder were used - they were instrumented, and data col

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23

Lee, Yuk-ting, and 李玉婷. "Production of transgenic plant-derived vaccines via plastid transformation technology." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B3015943X.

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24

Hislop, David John. "Strangeness production in a quark-gluon plasma." Doctoral thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/18382.

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This thesis is arranged as follows: Chapter 1 notes that the production of strangeness measured at CERN and Brookhaven has two possible explanations. One is that strange quarks, being relatively light, are easily produced, creating an abundance of strange particles in the experiment. On the other hand, hadron gas models use only thermodynamics, strangeness neutrality and baryon number conservation to predict the same ratios. Both models need a parameter, ϒs, reflecting the relative departure from equilibrium of strangeness. Chapter 2 discusses the Cutkosky rules and their thermal field theory

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25

Majeri, Nassim. "Production de rayons X par plasma ECR." Thesis, Orléans, 2009. http://www.theses.fr/2009ORLE2077/document.

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Durant cette thèse nous avons caractérisé et amélioré une nouvelle source de rayons X avec unplasma ECR (résonance cyclotronique électronique) permettant de générer des électronsénergétiques de 10 à 120 keV, qui vont ensuite produire le rayonnement X par freinage(bremsstrahlung). Les améliorations de l’installation ont permis d’obtenir une source stable, pouvantfonctionner une journée entière de travail (huit heures) sans arrêt. Dans la première partie de l’étudeexpérimentale on a étudié et déterminé les paramètres optimaux de la source : la pression, lapuissance micro-onde et la configuration

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26

Stellman, Jeffrey Taylor. "Production, development, and characterization of plastic hypodermic needles." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/29748.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Dr. Jonathan S. Colton; Committee Member: Dr. Mark R. Prausnitz; Committee Member: Dr. Rudolph L. Gleason. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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27

Stamouli, Konstantina. "Fuel production and optimisation from mixed plastic waste." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8268/.

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Increasing plastic consumption has created an alerting problem with waste disposal of the mixed waste plastics once the recyclable fractions have been recovered. The percentage sent to landfill of the generated mixed plastic waste amounts to one third of the total. Liquid fuel recovery from mixed plastic waste is possible using pyrolysis as a tertiary recycling process. The focus of this study was to obtain useful liquid product recovered from the pyrolysis of a variety of commercial mixed plastic waste utilising a pilot scale fluidised bed reactor of 1kg/hr processing capacity. The influence

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28

Rhodes, Peter. "Indices of nitric oxide production." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307982.

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29

Petitpas, Guillaume. "Étude du reformage d'hydrocarbures liquides assisté par plasma hors-équilibre pour la production de gaz de synthèse." Paris, ENMP, 2008. https://pastel.archives-ouvertes.fr/tel-01138136.

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L’utilisation directe d’hydrogène comme vecteur énergétique pour des applications embarquées doit actuellement faire face à l’absence d’infrastructure de distribution et à des difficultés technologiques liées au problème du stockage de l’hydrogène. Une étape transitoire possible avant le passage à une économie «direct hydrogène» consiste à produire l’hydrogène à bord du véhicule à partir des carburants automobiles traditionnels. Le reformage assisté par plasma hors équilibre constitue une alternative au reformage catalytique qui, bien que largement utilisé à l’échelle industrielle, reste peu a

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30

Blandin, Christopher. "Production of dielectric materials." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26568.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Colton, Jonathan; Committee Member: Schultz, John; Committee Member: Zhou, Min. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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31

Devillers, Guillaume. "Instabilités paramétriques et production d'impuretés sur JET durant le chauffage à la résonance cyclotronique des ions." Grenoble 1, 1991. http://www.theses.fr/1991GRE10051.

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Les spectres en frequence, jusqu'a 100 mhz, du champ electrique toroidal et poloidal ont ete mesures dans le bord de jet durant le chauffage a la resonance cyclotronique des ions. Plusieurs scenarios d'instabilite parametrique etaient evidents. La decomposition de l'onde rapide (pompe) en onde lente a ete observee pour chaque gaz chauffe par resonance centrale de minorite. Le champ electrique seuil et le taux de croissance ont ete calcules dans une approximation froide avec une correction collisionnelle. Les seuils calcules etaient suffisamment bas pour autoriser leur excitation potentielle pa

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32

Pavlenko, O. P., and Burkhard Kämpfer. "Photon production in an expanding gluon-enriched plasma." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-32727.

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Photon production in an expanding gluon plasma with initially little quark admixture is considered. Photons are created by lowest order a, processes which include quarks. Chemical equilibration of the quarks in turn is followed by rate equations which rely on lowest order αsgg = qq processes. Expansion slows down the quark cooking. Compared with the standard local equilibrium estimates we find a drastic reduction of mediumenergy photons if the initial quark admixure is below 20% of the chemical saturation density. Higher initial temperatures increase significantly the high-energy photon yield

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33

Nell, Annalien. "Study of the plasma based production of tetrafluoroethylene." Thesis, Stellenbosch : Stellenbosch University, 1999. http://hdl.handle.net/10019.1/51440.

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Thesis (MIng) --Stellenbosch University, 1999.<br>ENGLISH ABSTRACT: A method was developed at the Atomic Energy Corporation of South Africa (AEC) for the plasma based production of tetrafluoroethylene (TFE). The process involves the feeding of carbon particles into a direct-current CF4 plasma. The resultant plasma gas is quenched rapidly to obtain TFE and other fluorocarbons. The mixing of the particles with the plasma gas is very important in order to achieve a high C:F-ratio in the gas phase, which promotes the desired reactions. The gas enthalpy in the reactor is a governing factor in

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34

Pavlenko, O. P., and Burkhard Kämpfer. "Photon production in an expanding gluon-enriched plasma." Forschungszentrum Rossendorf, 1993. https://hzdr.qucosa.de/id/qucosa%3A22099.

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Photon production in an expanding gluon plasma with initially little quark admixture is considered. Photons are created by lowest order a, processes which include quarks. Chemical equilibration of the quarks in turn is followed by rate equations which rely on lowest order αsgg = qq processes. Expansion slows down the quark cooking. Compared with the standard local equilibrium estimates we find a drastic reduction of mediumenergy photons if the initial quark admixure is below 20% of the chemical saturation density. Higher initial temperatures increase significantly the high-energy photon yield

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35

Watson, T. L. "Accumulation and manipulation of positron plasmas for antihydrogen production." Thesis, Swansea University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.639359.

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This thesis describes a buffer gas positron accumulator which has been used by the ATHENA collaboration to produce and detect the first cold antihydrogen atoms. In particular, the work presented is centred on the implementation of a so-called rotating wall electric field to compress a positron plasma in preparation for recombination with antiprotons, in addition to maximising the accumulation efficiency by the automatic optimisation of the trap applied potentials. Central results include successful compression of the positron plasma with an increase in central density by a factor of six. The u

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36

Gunnarsson, Rickard. "Titanium oxide nanoparticle production using high power pulsed plasmas." Licentiate thesis, Linköpings universitet, Plasma och beläggningsfysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-128622.

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This thesis covers fundamental aspects of process control when growing titanium oxide nanoparticles in a reactive sputtering process. It covers the influence of oxygen containing gas on the oxidation state of the cathode from which the growth material is ejected, as well as its influence on the particles oxidation state and their nucleation. It was found that a low degree of reactive gases was necessary for nanoparticles of titanium to nucleate. When the oxygen gas was slightly increased, the nanoparticle yield and particle oxygen content increased. A further increase caused a decrease in part

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37

Muppidi, Mahanand. "Toward libraries for increased bio plastic production in cyanobacteria." Thesis, KTH, Skolan för bioteknologi (BIO), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173649.

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Cyanobateria are promising cell factories due to their minimal nutrient requirements and utilization of asmospheric carbon di-oxide as its sole carbon source. In particular, polyhydroxybutyrate (PHB) is an industrially useful bio plastic that is produced naturally by some cyanobacteria. Furthermore, PHB biosynthetic pathway is a starting point for production of the biofuel, 1-butanol. There has been much genetic engineering effort toward increasing the production of PHB from cyanobacteria. These have been focused on increasing the pool of acetyl-CoA precursor, or increasing the amount of the r

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38

Cowx, Peter M. "An evaluation of thermal plasmas in pyrometallurgy." Thesis, Aston University, 1988. http://publications.aston.ac.uk/11906/.

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The development of reliable, high powered plasma generators has resulted in many plasma processes being proposed as alternatives to existing pyrometallurgical technologies. This work evaluates the advantages and disadvantages of plasma systems by reviewing plasma generators, their integration with reactors and the process economics. Many plasma systems were shown to be technically and economically superior to existing technologies, but some of the plasma system advantages quoted in the literature were found to be impractical because of other system constraints. Process applications were limite

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39

Chikkala, Veera, and veera chikkala@rmit edu au. "Production and transformation of tobacco and Brassica containing macrochloroplasts." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091005.144005.

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Plastid division, sustained by the equilibrium expression and coordination of plastid division genes is vital for the maintenance of plastid populations in dividing plant cells. Macrochloroplasts (MCP), the occurrence of one or a few chloroplasts per cell is due to the imbalance in the expression of plastid division genes. Because of the MCP size and number it was proposed that they may provide better targets for the plastid transformation than the normal (WT) chloroplasts and result in better plastid transformation frequencies. The objective of this research was to produce transgenic pla

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40

Pratontep, Sirapat. "Production and characterisation of size-selected nanoclusters on surfaces." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289304.

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41

Kuznetsova, Inga Vladimirovna. "Particle Production in Matter at Extreme Conditions." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/193745.

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We study particle production and its density evolution and equilibration in hot dense medium, such as hadronic gas after quark gluon plasma hadronization and relativistic electron positron photon plasma. For this study we use kinetic momentum integrated equations for particles density evolution with Lorentz invariant reaction rates. We extend these equations, used before for two-to-two particles reactions (1 + 2 ↔ 3 + 4), to the case of two-to-one and backward reactions (1 + 2 ↔ 3). One type of hot dense medium, which we study, is hadronic gas produced at quark gluon plasma hadronization in he

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42

Ouni, Fakhreddine. "Production d'hydrogène et valorisation des alcanes par plasma non thermique." Orléans, 2006. http://www.theses.fr/2006ORLE2055.

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Le travail de thèse a porté sur la valorisation des hydrocarbures par plasma non thermique. L'étude concerne plus particulièrement la production de gaz de synthèse (CO + H2) et d'hydrogène (H2) à partir des alcanes (CnH2n+2) par vaporeformage et/ou craquage dans une décharge glissante à la pression atmosphérique. Un réacteur plasma tri-anodes et un montage expérimental dédié ont été développés afin de contrôler et de réduire le coût de production de H2 à partir du méthane (CH4) et du propane (C3H8). L'efficacité du réacteur plasma a été étudié en fonction des paramètres expérimentaux tels que

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43

Renou, Jean-Pierre. "Transformation génétique du chrysanthème (dendranthema grandiflora tzvelev) par agrobacterium." Angers, 1992. http://www.theses.fr/1992ANGE0009.

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La possibilité de transformation génétique du chrysanthème par agrobacterium a été étudiée. Des racines transformées ont pu être obtenues après inoculation avec a. Rhizogenes. Cependant la régénération de plantes transformées ne fut possible que dans de rares cas, après des temps de culture in vitro très longs. Des plantes transformées furent ensuite obtenues grâce à la souche d'agrobacterium. Eha 101 contenant un plasmide vecteur binaire qui comporte les gènes : npt ii, hpt et gus. Ces plantes ont été obtenues par sélection sur la résistance à la kanamycine. Différents protocoles ont conduit

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44

Cunningham, James Leo. "To develop a standard processing technique in order to maximise the bond strength between acrylic resin denture base material and polymer teeth." Thesis, Queen's University Belfast, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359018.

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45

Achkasov, Kostiantyn. "Study of negative ion surface production in cesium-free H2 and D2 plasmas : application to neutral beam injectors for ITER and DEMO." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4770.

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L'objectif de cette thèse était trouver des solutions pour produire de hauts rendements d’ions négatifs (IN) H–/D– sur des surfaces dans des plasmas de H2/D2 sans Cs pour des applications en fusion thermonucléaire. La modélisation des fonctions de distribution en énergie des ions négatifs (FDEIN) a montré un accord remarquable avec l'expérience pour les matériaux carbonés. Une méthode de reconstruction mis au point dans le cadre de cette thèse a permis de déterminer les distributions en énergie et en angle des IN émis de la surface. La méthode de reconstruction peut être appliquée à tout type

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Pristavita, Ramona. "Transferred arc production of fumed silica : rheological properties." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99787.

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The thermal plasma production of fumed silica in a transferred arc consists of the decomposition of quartz to SiO (g) and oxygen followed by an oxidizing quench back to SiO2. The particles formed have diameters of the order of 10 to 20 nm and are linked in a three dimensional branched chain aggregate. Previous work by Addona and Munz (1999) demonstrated the technical feasibility of producing fumed silica using this method, but was unable to demonstrate the special rheological properties of the powder. The most important characteristic of fumed silica is the presence of hydroxyls on the surface

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Santiago, Santiago Luz Mary. "Plastic Scintillation microspheres for radioactivity determination: synthesis, characterization and production." Doctoral thesis, Universitat de Barcelona, 2015. http://hdl.handle.net/10803/380546.

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Plastic scintillation microspheres (PSm) are a solid dispersion of one or more fluorescent solutes encapsulated within a polymeric matrix. PSm appear as an alternative to the use of liquid scintillation cocktails for radioactivity determination with the advantage of avoiding the mixed waste, for the measurement of salty samples, for performing measurements in continuous, or for employing them as a medium to join the measurement and separation steps. However, PSm are not completely available in the market, since only a few providers supply them at a high cost and with a limited range of sizes a

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McKee, Erik Scott. "Neutron Production from Z-pinch Plasmas at the 1 MA Zebra Generator." Thesis, University of Nevada, Reno, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10247687.

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<p> Neutrons produced deuterium Z-pinch plasmas are widely acknowledged to be a consequence of highly accelerated deuterons undergoing nuclear fusion with relatively stationary deuterons. The acceleration is thought to occur in intense fields created in the MHD instabilities that punctuate the plasma column. Interestingly, the energies of the accelerated ions exceed the applied voltage across the electrode gap. We use the 1 MA Zebra pulsed-power generator at the Nevada Terawatt Facility (NTF) to explore this poorly understood fast neutron production mechanism by creating deuterium Z-pinches in

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Robert, Jean-Marie Paul. "Dileptons, spectral weights, and conductivity in the quark-gluon plasma." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101171.

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This thesis re-examines soft dilepton emission from a weakly coupled Quark-Gluon Plasma. It shows that Braaten, Pisarski, and Yuan's result, that the dilepton rate rises as 1/q40 (and the spectral weight scales as 1/q0) at small energy q0 ≪ gT is correct, but that the coefficient they found for this behavior is not correct, because their analysis was incomplete. At still smaller scales, the behavior moderates to ∝ 1/q20 for q0 ≲ g4T, consistent with a finite electrical conductivity. An evaluation of the spectral weight in the q0 ~ g4 T region by kinetic theory techniques is carried out. The sp

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Liu, Fuming. "La production des particules dans le modèle Nexus." Nantes, 2002. http://www.theses.fr/2002NANT2033.

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Pour étudier la formation d'un plasma de quarks et de gluons, il est d'une importance capitale de comprendre en détails la dynamique des collisions hadroniques. La "Parton based Gribov-Regge Theory", dont la solution numérique est le modèle neXus, est une approche cohérente de la description de la diffusion hadron-hadron et des premiers instants des collisions noyau-noyau aux énergies ultra-relativistes. Les résultats des simulations permettent, par des comparaisons quantitatives avec les données expérimentales, une exploration efficace et systématique de certains domaines de la physique inacc

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