Log in

Relevant bibliographies by topics / Ethylene Systems / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Ethylene Systems.

Dissertations / Theses on the topic 'Ethylene Systems'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Ethylene Systems.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Mastroianni, Sergio. "New catalytic systems for the polymerisation of ethylene." Thesis, Imperial College London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343906.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Sensarma, S. "Study of ethylene polymerization using supported metallocene catalyst systems." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1997. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3360.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Iemsam-Arng, J. "Poly(ethylene) glycol based delivery systems for nucleic acid therapies." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1381001/.

Full text

Abstract:

Our work is aimed at developing a synthetic biocompatible gene and siRNA delivery system for the treatment of primary and metastatic tumours. To facilitate delivery of nucleic acid based drugs into the cell, one strategy is to formulate the naked gene with an amine based non-viral gene delivery system via the counterion interaction. The delivery systems including 4arm-PEG-amine, 4arm-PEG-N-2-ethylamine, 8arm-PEG-amine and 8arm-PEG-N-2-ethylamine were synthesised, characterised and complexed with a reporter gene (β-gal plasmid DNA) in phosphate buffer pH 6.0. The resulting complexes were sized

APA, Harvard, Vancouver, ISO, and other styles

4

Reddy, T. I. "Synthesis and reactivity of push-pull ethylene systems; new zeolite catalyzed chemical transformations." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1992. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3913.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Cheung, Adolf S. F. "Phase behavior of two binary systems containing ethylene at supercritical conditions." Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/5719.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Beigzadeh, Daryoosh. "Long-chain branching in ethylene polymerization using combined metallocene catalyst systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/NQ52024.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Anantharaman, Bharthwaj. "Reaction mechanisms for catalytic partial oxidation systems : application to ethylene epoxidation." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32328.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2005.<br>Includes bibliographical references.<br>With the rapid advances in kinetic modeling, building elementary surface mechanisms have become vital to understand the complex chemistry for catalytic partial oxidation systems. Given that there is selected experimental knowledge on surface species and a large number of unknown thermochemical, rate parameters, the challenge is to integrate the knowledge to identify all the important species and accurately estimate the parameters to build a detailed surface me

APA, Harvard, Vancouver, ISO, and other styles

8

Polverari, Marco. "Dynamic and evanescent wave light scattering of poly(ethylene oxide) - latex systems." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28515.

Full text

Abstract:

The principal aims of the thesis were to carry out a systematic analytical study to determine the solution properties of narrow-distribution and broad-distribution linear poly(ethylene oxide) (PEO) polymer samples in aqueous and organic solution and to study the adsorption properties of these polymer samples onto glass interfaces and spherical latex particles. The deposition characteristics of various types of bare and PEO coated latex particles onto collector surfaces were also studied.<br>These studies allowed to ascertain the presence of PEO clusters in aqueous solution. The cluster size wa

APA, Harvard, Vancouver, ISO, and other styles

9

Nacerodien, Mogamat Thaabit. "Investigation of polymer grade blending in Ziegler-Natta Catalysed ethylene polymerisation systems." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9122.

Full text

Abstract:

Includes bibliographical references.<br>Polyethylene is one of the most widely used polymers to date and it is an important commodity in a variety of fields. Most existing polyethylene plants operate on technology involving heterogeneous Ziegler-Natta catalysts. Plants often change operating conditions to produce different polymer grades; this allows them to cater to a larger polymer market. A side-effect of this practice is the unwanted formation of off-spec polymer during the grade transition periods. Numerous studies have been conducted to address the issue of off-spec polymer formation. Th

APA, Harvard, Vancouver, ISO, and other styles

10

Radcliffe, James Edward. "Discovery and development of novel P,N ligands for selective ethylene oligomerisation systems." Thesis, Durham University, 2015. http://etheses.dur.ac.uk/11301/.

Full text

Abstract:

This thesis documents the design, discovery, and development of a range of P,N-type ligands and their application in selective ethylene oligomerisation processes. Two classes of ligand have been investigated, PNE (Ph2P(CH2)2NC4H8E, E = NMe, O, CH2) ligands, and iminophosphine ligands (R(PR’2)C=NAr). The coordination chemistry of both these series of compounds has been investigated with various chromium species, and the behaviour of these molecules in ethylene oligomerisation systems probed. Chapter 2 explores the application of PNE ligands to ethylene oligomerisation. The coordination chemistr

APA, Harvard, Vancouver, ISO, and other styles

11

Alzamly, Ahmed. "The Role of Aluminate in the Activation of Catalytic Systems for Ethylene Oligomerization." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31024.

Full text

Abstract:

The reaction mechanisms followed by ethylene polymerization and selective oligomerization (tri- and tetramerization) are conceptually very different, being a non-redox chain growth and a redox metallacycle ring expansion pathway respectively. With chromium being the metal of choice, metal oxidation states and the variation of ancillary ligand able to support specific metal oxidation states responsible for selective trimerization, tetramerization or nonselective oligomerization/polymerization were varied. In this research project we have explored a broad range of novel pyridine containing modif

APA, Harvard, Vancouver, ISO, and other styles

12

Hagan, Susan Anne. "Poly(lactic acid)-poly(ethylene glycol) copolymers for use as drug delivery systems." Thesis, University of Nottingham, 1998. http://eprints.nottingham.ac.uk/30646/.

Full text

Abstract:

Block copolymers of polylactide and poly( ethylene glycol) (PLA-PEG) were investigated as biodegradable drug delivery systems. They are defined by the differing molecular weight ratios of polylactide to poly( ethylene glycol). Copolymers containing more hydrophilic PEG than hydrophobic PLA per molecule self-dispersed in water giving spherical nonionic micelles. Purification by gel permeation chromatography gave two peaks. The first peak only formed micelles (the second was PLA-depleted). Analysis by dynamic light scattering (DLS) and transmission electron microscopy (TEM) gave diameters of IS.

APA, Harvard, Vancouver, ISO, and other styles

13

Grigorian, V. "An investigation into the characterisation of the laser-induced incandescence method for the measurement of soot in practical systems." Thesis, Cranfield University, 2002. http://dspace.lib.cranfield.ac.uk/handle/1826/10755.

Full text

Abstract:

The thesis describes the characterisation and application of the laser induced incandescence technique for making soot measurements in practical devices. Laser induced incandescence is the phenomenon whereby particulates such a soot absorb laser radiation and are heated to a temperature much higher than the bath gas. The broadband incandescence signal from the hot particles can be detected and the signal is proportional to volume fraction. The technique was used to study soot in partially premixed counterflow ethylene air flames, iso-octane explosion flames, and to image soot in a D. I. Diesel

APA, Harvard, Vancouver, ISO, and other styles

14

Stanley, Nicholas. "Organic, metallic and mixed catalytic systems for the synthesis of poly(ethylene terephthalate-co-isosorbide terephthalate)." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10053.

Full text

Abstract:

L’objectif de cette thèse, en partenariat avec la société Roquette Frères et l’Institut Français des Matériaux Agrosourcés (IFMAS), est de développer des systèmes catalytiques permettant de catalyser de manière efficace la polyestérification d’alcools secondaires. Il s’agit de faciliter l'incorporation de monomères biosourcés tel que l'isosorbide dans des polyesters de type poly(éthylène téréphtalate) (PET). L’emploi de ce monomère biosourcé permet d’accéder à de nouvelles propriétés et de réduire la consommation de dérivés d’origine pétro-sourcés comme peut l’être le CHDM (cyclohexane dimétha

APA, Harvard, Vancouver, ISO, and other styles

15

Rodriguez, Joel. "Investigation of transient plasma ignition for a Pulse Detonation Engine." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FRodriguez.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Chapman, Brian G. "Study of drag reduction by zwitterionic and non-Ionic surfactants in low temperature ethylene glycol/ water recirculation systems /." Connect to this title online, 2005. http://hdl.handle.net/1811/313.

Full text

Abstract:

Thesis (Honors)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formattted into pages: contains vi, 78 p.; also includes graphics. Includes bibliographical references (p. 62-63). Available online via Ohio State University's Knowledge Bank.

APA, Harvard, Vancouver, ISO, and other styles

17

Miles, William Clayton. "The Design of Stable, Well-Defined Polymer-Magnetite Nanoparticle Systems for Biomedical Applications." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28725.

Full text

Abstract:

The composition and stability of polymer-magnetite complexes is essential for their use as a treatment for retinal detachment, for drug targeting and delivery, and for use as a MRI contrast agent. This work outlines a general methodology to design well-defined, stable polymer-magnetite complexes. Colloidal modeling was developed and validated to describe polymer brush extension from the magnetite core. This allowed for the observation of deviations from expected behavior as well as the precise control of polymer-particle complex size. Application of the modified Derjaguin-Verwey-Landau-Overbee

APA, Harvard, Vancouver, ISO, and other styles

18

Lucas, Bruce. "Fundamental Modeling of Solid-State Polymerization Process Systems for Polyesters and Polyamides." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29378.

Full text

Abstract:

The dissertation describes and assembles the building blocks for sound and accurate models for solid-state polymerization process systems of condensation polymers, particularly poly(ethylene terephthalate) and nylon-6. The work centers on an approach for modeling commercial-scale, as opposed to laboratory-scale, systems. The focus is not solely on coupled polymerization and diffusion, but extends to crystallization, physical properties, and phase equilibrium, which all enhance the robustness of the complete model. There are three applications demonstrating the utility of the model for a varie

APA, Harvard, Vancouver, ISO, and other styles

19

Junges, Fernando. "Novel catalyst systems based on Ni(II), Ti(IV), and Cr(III) complexes for oligo-and polymerization of ethylene." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2005. http://hdl.handle.net/10183/6358.

Full text

Abstract:

Le complexe de Brookhart Ni(α-diimine)Cl2 (1) (α-diimine = 1,4-bis(2,6- diisopropylphenyl)-acenaphthenediimine) a été caractérisé après impregnation sur silice (S1) et a silices modifié avec MAO (4,0, 8,0 et 23,0 wt.% Al/SiO2 appelé S2, S3 et S4, respectivement). Le traitement de ces composés greffé avec MAO produit des catalyseurs actifs pour la polymérisation de l'éthylène. Un haute activité catalytique a été obtenue en utilisant le système supporté 1/S3 (196 kg de PE/mol[Ni].h.atm; toluene, Al/Ni = 1000, 30ºC, 60 min et pression atmosphérique d'éthylène). Les effets des conditions de la pol

APA, Harvard, Vancouver, ISO, and other styles

20

Travelet, Christophe. "Supramolecular systems based on α-cyclodextrins and poly(ethylene oxide) : structure and properties of pseudo-polyrotaxanes, polyrotaxanes and sliding gels". Strasbourg, 2009. http://www.theses.fr/2009STRA6033.

Full text

Abstract:

Nous avons étudié le processus de complexation entre les α-cyclodextrines (α-CD) et le poly(oxyéthylène) (PEO) dans l'eau, conduisant ainsi à la formation de complexes d'inclusion appelés pseudo-polyrotaxanes (PPR). A 30°C, nous avons établi que, dans une première étape, les α-CD complexent les chaînes de PEO, formant des molécules de PPR. A plus grande échelle, une agrégation rapide des molécules de PPR a lieu et des nano-cylindres à base d'α-CD complexées se forment. A plus grande échelle encore, les nano-cylindres à base d'α-CD s'associent de manière gaussienne, engendrant la formation de d

APA, Harvard, Vancouver, ISO, and other styles

21

Huang, Chien-Chang. "The application of tetrakis(dimethylamino)ethylene chemiluminescence in characterization of the surface properties of metal oxides and reversed microemulsion systems." Diss., Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/1609.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Nguyen, Ngoc Linh. "Toward Realistic DFT Description of Complex Systems: Ethylene Epoxidation on Ag-Cu Alloys and RPA Correlation in van der Waals Molecules." Doctoral thesis, SISSA, 2012. http://hdl.handle.net/20.500.11767/4699.

Full text

Abstract:

In this thesis we have studied two different aspects of Density Functional Theory (DFT): (i) the application of DFT with the generalized gradient approximation (GGA) functional for exchange-correlation energy in modeling an heterogeneous catalysis problem, and (ii) the development of a new self-consistent field (scf) strategy to solve the Kohn-Sham (KS) equations that allows to improve the accuracy of DFT method with exact exchange (EXX) and RPA correlation energy functionals in the description of weak chemical interactions. Ethylene epoxidation, one of the largest-scale catalytic proce

APA, Harvard, Vancouver, ISO, and other styles

23

Prasetyo, Eko [Verfasser], and Elias [Akademischer Betreuer] Klemm. "Development of heterogenized catalyst systems for the synthesis of acrylic acid derivatives from carbon dioxide and ethylene / Eko Prasetyo. Betreuer: Elias Klemm." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2015. http://d-nb.info/1074139712/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Zahouani, Sarah. "Development of new types of mechanocatalytic systems." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAE037/document.

Full text

Abstract:

Le fascinant processus par lequel les signaux mécaniques sont transformés en réactions biochimiques dans la nature est appelé mécano-transduction. Le but de ma thèse a été de mimer la Nature en élaborant de nouveaux systèmes enzymatiques mécano-transductifs, i.e des matériaux capables de moduler une catalyse enzymatique lorsqu’ils sont sollicités mécaniquement. Nous avons d’abord étudié l’effet de l’étirement sur les chaînes constitutives de films multicouches de polyélectrolytes, matrices souvent utilisées pour le développement de biomatériaux intelligents. Dans le cadre d’une nouvelle straté

APA, Harvard, Vancouver, ISO, and other styles

25

Kanjickal, Deenu George. "Perivascular Drug Delivery Systems for the Inhibition of Intimal Hyperplasia." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1133715441.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Simmons, Stephanie. "Influence of processing on the structure and properties of semi-crystalline polymer systems : 1) biodegradable starch/poly(ethylene-vinyl alcohol) blends and 2) polyolefinic thermoplastics." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11379.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Wheeler, Nicholas Robert. "Lifetime and Degradation Science of Polymeric Encapsulant in Photovoltaic Systems: Investigating the Role of Ethylene Vinyl Acetate in Photovoltaic Module Performance Loss with Semi-gSEM Analytics." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1473440287427776.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Joshi, U. M. "Studies on diastereoselective C-C bond formation via thio-claisen rearrangement on push-pull ethylene systems incorporating an arene -chromium complex: part A - triphosgene mediated tandem desulfurization-transesterification of alkyl thionocarbamates." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2000. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2290.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Bavarian, Neda. "Investigation of ethylene/propylene and ethylene/propylene/diene polymerization by Cp*TiMe3/B(C6F5)3 catalyst system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0016/MQ52971.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Mahajan, Vishal Khomdeo. "Study of chalcopyrite oxidation in hydrogen peroxide-ethylene glycol system." abstract and full text PDF (free order & download UNR users only), 2005. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1433392.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Ilett, Stephen Mark. "A physico-chemical study of the poly(ethylene oxide) water system." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334498.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Ploetz, Christopher Daniel. "Micelles of polybutadiene-b-poly(ethylene oxide) in a binary solvent system." College Park, Md. : University of Maryland, 2008. http://hdl.handle.net/1903/8310.

Full text

Abstract:

Thesis (M.S.) -- University of Maryland, College Park, 2008.<br>Thesis research directed by: Dept. of Chemical and Biomolecular Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

APA, Harvard, Vancouver, ISO, and other styles

33

Radhakrishnan, K. "Synthesis of ethylene bicyclic olefin copolymers using metallocene/mao catalyst system and its functionalization." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1997. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3364.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Cantu, Karina Arcaute. "Stereolithography of poly (ethylene glycol) hydrogels with application in tissue engineering as peripheral nerve regeneration scaffolds." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Atilgan, Nurdan. "Design, Synthesis And Electropolymerization Of A New Chemiluminescent Terthienyl System." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609858/index.pdf.

Full text

Abstract:

ABSTRACT DESIGN, SYNTHESIS AND ELECTROPOLYMERIZATION OF A NEW CHEMILUMINESCENT TERTHIENYL SYSTEM Atilgan, Nurdan M.Sc. Department of Chemistry Supervisor: Prof. Dr. Ahmet M. &Ouml<br>nal Co-Supervisor: Assist. Prof. Dr. Atilla Cihaner September 2008, 57 pages A novel monomer, possessing chemiluminescence properties, 5,7-di-ethylenedioxythiophen-2-yl-2,3-dihydro-thieno[3,4-d]pyridazine-1,4-dione (ETE-Lum) was synthesized. Chemiluminescence properties of ETE-Lum were investigated in alkaline water solution in the presence of H2O2 and this reaction was catalyzed by Fe+3 ion and blood. Th

APA, Harvard, Vancouver, ISO, and other styles

36

CHAPMAN, DONALD RIVERS. "DETERMINING EMPLOYEE EXPOSURE TO ETHYLENE GLYCOL WHILE PERFORMING MAINTENANCE ON AN AIRCRAFT DEICING FLUID COLLECTION SYSTEM." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1187020385.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Scheele, Iris. "Hochauflösende Infrarot-Spektroskopie an schwach gebundenen Van-der-Waals-Systemen." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963558668.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Hyllestad, Ketil. "Scaling of Calcium Carbonate on a Heated Surface in a Flow Through System with Mono Ethylene Glycol." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for kjemisk prosessteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-22335.

Full text

Abstract:

Efficiency of industrial heat exchangers can be reduced due to precipitation of a solid mineral layer called scale. Reversibly soluble salts such as calcium carbonate are less soluble at elevated temperatures and therefore precipitate more easily in these units. The effect is also seen in oil wells, pipelines and desalination plants among others.The aim of this work was to determine growth rates and polymorphic composition of the formed scale at a range of inlet supersaturations, heated medium temperatures and solvent compositions. Experimental setup was prepared to study the effect of these p

APA, Harvard, Vancouver, ISO, and other styles

39

Freitas, ValdinÃia Soares. "Polyamines and ethylene metabolisms and antioxidative defense system induction in two maize genotypes contrasting in salinity tolerance." Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15060.

Full text

Abstract:

CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Polyamines and ethylene have been cited as important regulators of plant growth and development, and may be involved in plant defense against several abiotic stresses, such as salinity. To withstand with salt harmful effects, plants respond through a coordinated set of physiological and molecular responses to improve their performance under salinity. In order to test the hypothesis that salt tolerance degree in maize genotypes is related to changes in polyamine metabolism associated with ethylene production, two experiments were per

APA, Harvard, Vancouver, ISO, and other styles

40

Thorpe, Sandra Denise. "Preparation and characterization of sodium poly(aL-glutamate)/poly(pyrrole)/poly(ethylene oxide) polymeric blends for a responsive peptide drug delivery system." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2004. http://digitalcommons.auctr.edu/dissertations/1703.

Full text

Abstract:

Blends of sodium poly(a,L-glutamate) (MW 49K), poly(pyrrole) and poly(ethylene oxide) (MW lOOK) were prepared by a solution-blending process. A series of blend compositions were studied and characterized to determine optimal parameters and conditions necessary for the encapsulation and stability of the peptide portion of this ternary system. The retaining of the conformational structure of the peptide is important for its activity in a delivery system. Results derived from Infrared Spectroscopy (lR) indicated that the helical conformation of the peptide was maintained. The solid-state morpholo

APA, Harvard, Vancouver, ISO, and other styles

41

Canaveze, Yve. "Diferenciação de laticíferos articulados em plantas de Tabernaemontana catharinensis (Apocynaceae)." Botucatu, 2016. http://hdl.handle.net/11449/138104.

Full text

Abstract:

Orientador: Silvia Rodrigues Machado<br>Resumo: Neste estudo buscamos avaliar diferentes aspectos da diferenciação de laticíferos. O crescimento intrusivo (capacidade de crescer penetrando a lamela média de células adjacentes) e a ação indutora dos laticíferos (capacidade de induzir uma célula vizinha a adquirir características de laticíferos) são mecanismos de crescimento interessantes que podem ocorrer nos laticíferos, mas que são mal compreendidos. O etileno e o ácido jasmônico são hormônios vegetais liberados durante a herbivoria e podem afetar a diferenciação de estruturas secretoras rela

APA, Harvard, Vancouver, ISO, and other styles

42

Eysholdt-Derzsó, Emese [Verfasser], Margret [Akademischer Betreuer] Sauter, and Dietrich [Gutachter] Ober. "Ethylene Response Factor VII transcription factors control the reshaping of the root system architecture in response to hypoxia / Emese Eysholdt-Derzsó ; Gutachter: Dietrich Ober ; Betreuer: Margret Sauter." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1236287878/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Mahagamasekera, Mahagamage Gesha Patalee. "Daylily (Hemerocallis) as a model system for the study of ethylene-insensitive flower senescence : tissue culture and aspects of the development of proteolytic enzyme activities, with special emphasis on leucine aminopeptidase." Thesis, University of Canterbury. Plant and Microbial Sciences, 2000. http://hdl.handle.net/10092/5669.

Full text

Abstract:

A micropropagation technique has been developed using petal and ovary explants from floral buds of several daylily cultivars. The growth regulators NAA and BA or 2iP in ½ strength MS was used for the initiation of shoot primordia while rooting was carried out in growth regulator-free ½ strength MS. Many plantlets of cv. Stella D'oro were grown successfully in the glasshouse to supply flowers for the experiments on senescence in this study. The role of proteolytic enzymes with special emphasis on leucine aminopeptidase (LAP), in senescence of ethylene-insensitive flowers was studied using day

APA, Harvard, Vancouver, ISO, and other styles

44

Myint, Myo. "Production d'antibiotiques par des techniques non conventionnelles de fermentation." Toulouse, INSA, 1989. http://www.theses.fr/1989ISAT0033.

Full text

Abstract:

Les pristinamycines sont des antibiotiques issus du metabolisme secondaire de streptomyces pristinaespiralis. Dans un premier temps, l'environnement necessaire a la production en culture sur milieu synthetique, semi-synthetique ou complexe est caracterise. La production des pristinamycines est influencee par les facteurs physico-chimiques tels que le ph et l'oxygene dissous, notamment, qu'il faut reguler tout au cours de la fermentation, par la concentration en phosphate, parametre determinant, qui doit rester inferieure a une valeur seuil. D'autre part, la synthese des antibiotiques est inhib

APA, Harvard, Vancouver, ISO, and other styles

45

AIDO, LAETITIA. "Optimisation de la fabrication de l'indole-2 carboxylate d'ethyle : automatisation de la reaction de wislicenus et thoma et de la reaction d'hydrogenation de brehm, etude de differents systemes de commande : correlateur logique (...) microprocesseur." Paris 6, 1986. http://www.theses.fr/1986PA066370.

Full text

Abstract:

Cette etude a ete faite pour demontrer l'efficacite des methodes d'optimisation et d'automatisation; elle a permis un gain de rendement de 36 points (de 41 a 77%) associe a une forte diminution de la duree globale de la reaction (76h a 2h30)

APA, Harvard, Vancouver, ISO, and other styles

46

Thomas, Joshua Brock. "Lightly crosslinked poly(ethylene glycol)-tethered, pH-responsive biomaterials." Thesis, 2006. http://hdl.handle.net/2152/2940.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Chen, Tzu-Ying, and 陳姿穎. "Isothermal Vapor-Liquid Equilibrium for Binary Mixtures of Ethylene Glycol Purification Related Systems." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/p6wqwn.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>化學工程系<br>103<br>A static-type apparatus with a liquid-phase circulation loop was used to measure isothermal vapor-liquid equilibrium (VLE) data for the binary systems of solvent A + 1,2-butanediol and solvent A + ethylene glycol at 393.15 K, 423.15 K, and 453.15 K. And also measured the binary systems of solvent B + 1,2-butanediol at 353.15 K, 393.15 K, 433.15 K, and 473.15 K, and solvent B + ethylene glycol at 393.15 K, 433.15 K, and 473.15 K. The experimental results exhibit no azeotropic behavior and positive deviations from Raoult’s law for each binary system. The thermod

APA, Harvard, Vancouver, ISO, and other styles

48

Lin, Chia-Ying, and 林佳穎. "The study of thermal stability and fire retardant systems of ethylene-vinyl acetate copolymer/montmorillonite nanocomposites." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/18297844281976192973.

Full text

Abstract:

碩士<br>國立雲林科技大學<br>環境與安全衛生工程系碩士班<br>99<br>To achieve the purpose of safety equipment and development of fire retardant and wire cable materials has trended to low smoke and halogen-free flame retardant technology in the business. However, many polymer flame retardant materials required a very high proportion of the metal hydrate filler within the polymer matrix（60 wt%）to achieve a suitable level of flame retardant, which may lead to a lack of flexibility, poor mechanical properties and problems during compounding. In this study, the aluminum hydroxide added montmorillonite（MMT）as the halogen-fr

APA, Harvard, Vancouver, ISO, and other styles

49

PIZZI, ELISA. "Synthesis, characterization and functionalization of PEDOT conducting systems on ethylene vinyl alcohol copolymer supports and derivatives." Doctoral thesis, 2014. http://hdl.handle.net/11573/647627.

Full text

Abstract:

The research work described in this PhD thesis focuses on methods and strategies of employing a polymer substrate for poly(3,4-ethylenedioxythiophene) (PEDOT) synthesis. For the purpose an ethylene vinyl alcohol copolymer (EVAL) was chosen. It offers many potentialities. Serving as mechanical support and/or functionalizable phase, it was differently combined with PEDOT to give conducting composite polymer flms or it was modified to obtain electro-active materials. Aim of the work is to show how, starting from the same base, it is possible to introduce functionalities into supported conducting

APA, Harvard, Vancouver, ISO, and other styles

50

PIZZI, ELISA. "Synthesis, characterization and functionalization of PEDOT conducting systems on ethylene vinyl alcohol copolymer supports and derivatives." Doctoral thesis, 2014. http://hdl.handle.net/11573/917285.

Full text

Abstract:

The research work described in this PhD thesis focuses on methods and strategies of employing a polymer substrate for poly(3,4-ethylenedioxythiophene) (PEDOT) synthesis. For the purpose an ethylene vinyl alcohol copolymer (EVAL) was chosen. It offers many potentialities. Serving as mechanical support and/or functionalizable phase, it was differently combined with PEDOT to give conducting composite polymer flms or it was modified to obtain electro-active materials. Aim of the work is to show how, starting from the same base, it is possible to introduce functionalities into supported conduct

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!