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Rozprawy doktorskie na temat „Chemistry”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Walls, Bethany M. "Becoming a chemist graduate students' perspectives on chemists and chemistry /." Connect to this title online, 2008. http://etd.lib.clemson.edu/documents/1233080675/.

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2

Sato, Hiroki. "Chemistry /." Online version of thesis, 2008. http://hdl.handle.net/1850/7747.

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3

Dinescu, Adriana Cundari Thomas R. "Metals in chemistry and biology computational chemistry studies /." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-3678.

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4

Jiang, Jian. "Studies of supramolecular chemistry through Schiff-base chemistry." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/27809.

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This thesis describes the synthesis, characterization, and host-guest studies of a series of Schiff-base macrocycles. New [2+2] Schiff-base macrocycles were prepared by Schiff-base condensation. These macrocycles were shown to be wide-mouthed supramolecular hosts that can include organic cations such as pyridinium, paraquat and ammonium derivatives. A new kind of donor-acceptor-donor 3-in-1 complex was obtained in solution by combining macrocycle, cyclobis(paraquat-p-phenylene) and tetrathiafulvalene. Variations of these [2+2] Schiff-base macrocycles were prepared by modifying the substituent

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5

Dinescu, Adriana. "Metals in Chemistry and Biology: Computational Chemistry Studies." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc3678/.

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Numerous enzymatic reactions are controlled by the chemistry of metallic ions. This dissertation investigates the electronic properties of three transition metal (copper, chromium, and nickel) complexes and describes modeling studies performed on glutathione synthetase. (1) Copper nitrene complexes were computationally characterized, as these complexes have yet to be experimentally isolated. (2) Multireference calculations were carried out on a symmetric C2v chromium dimer derived from the crystal structure of the [(tBu3SiO)Cr(µ-OSitBu3)]2 complex. (3) The T-shaped geometry of a three-coordina

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6

Grange, Helen. "Good Chemistry." True Love, 2011. http://hdl.handle.net/10962/d1006276.

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7

Mant, Barry Peter. "Antimatter chemistry." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230606.

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This thesis concerns the theoretical study of the low-energy interaction of antihydrogen atoms (¯H) with hydrogen molecules and antiprotons (p¯) with hydrogen molecular ions. Both systems are of interest to experiments currently under way at CERN aiming to trap and study antihydrogen atoms. To date limited work has been carried out on these systems. Only four papers on the ¯H-H2 system have been published and so far only semi-classical results have been published for p¯-H+ 2 . For both systems potential energy surfaces are constructed by ﬁtting analytical functions to ab initio calculated ener

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8

Qureshi, Tariq. "Spin chemistry." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365292.

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9

Polywka, R. "Epoxide chemistry." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258024.

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10

Fitchett, Christopher Mark. "Metallosupramolecular chemistry." Thesis, University of Canterbury. Chemistry, 2002. http://hdl.handle.net/10092/5964.

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This thesis describes the preparation and characterisation of a number of metallosupramolecular assemblies. Such species were constructed by the reaction of ligands based on nitrogen containing heterocycles with metal atoms. The coordinate bonds used to hold these species together provide a mixture of strength and lability that aids the formation of interesting structures. The twenty six ligands utilised for the formation of metallosupramolecular species can be divided into three types; rigid sym-biheterocycles, ligands with added flexibility, and chiral ligands for the formation of polymers.

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11

Sudkeaw, Pravit. "Theoretical chemistry." Thesis, University of Canterbury. Chemistry, 1991. http://hdl.handle.net/10092/8785.

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Ab initio Molecular Orbital and Valence-Bond methods and the semiempidcal, AM1 method are applied in the studies of: 1. The proton affinity of diacetylene The gas-phase ion-molecule reaction between diacetylene and a proton was studied theoretically at the MP4SDQ/6-311G** level. The geometries, calculated harmonic vibrational frequencies and the proton affinity of the most stable structures are compared. The results from this study are supported by selected ion flow tube measurements and are compared with other calculations 2. The gas-phase reaction of CH₃CN and CH₃⁺. The reaction between

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12

Alcock, S. "Tobacco chemistry." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356015.

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13

Salan, Umit. "Feverfew chemistry." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336046.

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14

Bown, M. "Organoruthenaborane chemistry." Thesis, University of Leeds, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377857.

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15

Potterton, Michael Andrew. "Diazopeptide chemistry." Thesis, Open University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337282.

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16

Phiri, Aretha. "Illuminating chemistry." Rhodos, 2006. http://hdl.handle.net/10962/d1006407.

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Every year the Chemistry Department hosts a visiting lecturer for a week in memory of Professor William Francis Barker, former Professor of Chemistry in the Rhodes Chemistry Department (1925 -1961). This year's Barker Lecturer was Professor Mike Cook from the Department of Chemistry and Pharmaceutical Sciences at the University of East Anglia in Norwich, England. Professor Cook has an ongoing collaboration with Professor Tebello Nyokong in the Department of Chemistry in the field of phthalocyanine.

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17

San, Martín Luis Ortega. "Peruvian Chemistry Olympiad, twenty years promoting chemistry among youngsters." Revista de Química, 2015. http://repositorio.pucp.edu.pe/index/handle/123456789/100005.

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La olimpiada peruana de Química cumple su vigésimo aniversario y en este artículo se hace una pequeña recopilación de la participación de alumnos en los últimos años, de las regiones de las que proceden y de los éxitos internacionales obtenidos por nuestra delegación.<br>The Peruvian Chemistry Olympiad celebrates its 20th anniversary and, in this report, a short review of the student participation in the event along with their origin and the international results obtained by each year’s winners is given.

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18

Goei, Elisabeth Rukmini. "Using Green Chemistry Experiments to Engage Sophomore Organic Chemistry." Miami University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=miami1280437800.

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19

Orrling, Kristina M. "On the Versatility of Microwave-Assisted Chemistry : Exemplified by Applications in Medicinal Chemistry, Heterocyclic Chemistry and Biochemistry." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-101356.

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20

Erickson, John Timothy. "Chem flash cards online chemistry tutorials for beginning chemistry students /." Connect to online resource, 2004. http://www.csun.edu/%7Ejte35633.

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21

Humphrey, Mark Graeme. "Aspects of organometallic chemistry, particularly metal alkynyl and cluster chemistry." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09SD/09sdh9267.pdf.

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Includes bibliographical references. Details research carried out into the nonlinear optical properties of metal alkynyls, chiefly organoruthenium complexes, showing that these complexes can be designed to have very large NLO coefficients. Also demonstrates the utility of spectroscopic, electrochemical and copmutational aids as predictive tools for NLO materials. Also examines cluster synthesis, reactivity and physical properties using ruthenium clusters and hard-donor ligands, affording a series of cluster complrxes that provide structural models for industrially-important hydrotreating inter

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22

Leste-Lasserre, Pierre. "Sulfur allotrope chemistry." Thesis, McGill University, 2001. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=38218.

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The synthesis of the sulfur homocycles S6, S9, S10, S12 and S20, which belong to the group of sulfur allotropes, has been achieved based on existing procedures. Polymeric sulfur Smu was also prepared.<br>The parameters of a small scale model reaction between 2,3-diphenyl-1,3-butadiene and S10 were optimized. Products were identified and 1H-NMR yields were calculated by comparison with an internal standard. The experimental parameters of this model served as a base for further reactions of S 10 with a variety of simple or conjugated olefins. The products of these reactions were fully isolated a

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23

York, Andrew P. E. "Methane conversion chemistry." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334954.

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24

Chatakondu, Kalyan. "Organometallic intercalation chemistry." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258017.

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25

Seward, Christopher M. P. "Stereoselective glycosylation chemistry." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270281.

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26

Polywka, M. E. C. "Mechanistic organometallic chemistry." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253399.

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27

Duggan, Andrew Charles. "Fullerene intercalation chemistry." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298749.

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28

Henry, Paul Francis. "Fullerene intercalation chemistry." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363757.

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29

Bishop, Alexander James. "Actinide surface chemistry." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54193/.

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The surface reactivity of thorium and uranium, and how this links to the 5f electrons, has been investigated under UHV conditions using X-ray photoelectron spectroscopy (XPS), ultra violet photoelectron spectroscopy (UPS), and inverse photoemission spectroscopy (IPES).  Water and ammonia adsorption on a polycrystalline thorium surface has been investigated at 100 and 298 K.  Water adsorbs and dissociates upon the surface, leading to the formation of oxide and hydroxide species at 298 K, and oxide, hydroxide, and physisorbed water at 100 K. The surfaces after adsorption at both temper

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30

Song, Chuanjun. "New heteroaromatic chemistry." Thesis, Cardiff University, 2005. http://orca.cf.ac.uk/56011/.

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The current literature for the synthesis of pyrazole derivatives has been reviewed. A silver nitrate-induced 5-endo-dig approach to pyrazolines and pyrazoles is discussed. A brief review of the 5-endo-dig cyclisation is included. The propargylic hydrazine precursors are synthesized by four different routes. The key step for the first route is a Mitsunobu reaction of propargylic alcohols with hydrazine derivatives. A short review of the Mitsunobu reaction is also included. The second route applied is a nucleophilic attack onto imines by lithium acetylides followed by electrophilic Anamination o

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31

Norbury, A. M. "Novel organoboron chemistry." Thesis, Swansea University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638337.

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The first part of the thesis deals with an investigation into some aspects of the chemistry of di-(2,4,6-triisopropylphenyl)boranes, a novel class of highly hindered organoborones. Chapter one investigates the synthesis of such compounds and discusses the formation of organoboranes in general. Chapter two discusses the chemistry of carbanions, especially those stabilized by an adjacent boron atom. The results of a study of the lithiation of ditripylboranes are reported. It is shown that the compounds are readily lithiated by unhindered bases. Chapters three, four and five report some of the re

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32

Meade, Susie J. "Primary Metabolic Chemistry." Thesis, University of Canterbury. Chemistry, 1999. http://hdl.handle.net/10092/5794.

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Thioesters and acyl phosphates are important metabolites throughout the biosphere. This may imply that they were involved in prebiotic chemistry. The study of the reactivity of thioesters and acyl phosphates may therefore provide some insights into the possible roles for these molecules in prebiotic chemistry. The work described in this thesis demonstrates that acetyl phosphate and inorganic phosphate react to form pyrophosphate in the presence of salts of some divalent metals. Divalent metal ions and nitrogen containing compounds act in synergy to promote pyrophosphate formation in some case

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33

Wheildon, Andrew R. "Novel nitrogen chemistry." Thesis, University of Nottingham, 1999. http://eprints.nottingham.ac.uk/13326/.

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Chapter One contains a brief overview of zeolites, their structure, uses and synthesis. Chapter Two relates to the attempted synthesis of quinuclidines via a novel 6-endo-trig radical cyclisation. Chapter Three contains a review of the 'Zip reaction' and the attempted synthesis of triazacyclopentadecane derivatives. Chapter Four relates to the synthesis of pyrrolidines via retro-Cope cyclisation methodology. Reviews of the Cope and retro-Cope reactions, nitrone synthesis and nucleophilic addition of carbon nucleophiles to nitrones are included. The synthetic work is split into three sections r

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34

Bates, Richard Simon. "Arene ruthenium chemistry." Thesis, University of Nottingham, 1990. http://eprints.nottingham.ac.uk/11890/.

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This thesis describes the synthesis and reactivity studies of new arene-ruthenium(II) and arene-ruthenium(O) complexes. Ultrasound has been investigated as an alternative energy source, with the overall aim of synthesising arene ruthenium clusters. Chapter 1 gives an introduction and summary of the known arene ruthenium chemistry reported to date. Chapter 2 reports the synthesis of (CGH6)Ru(C2H4)2 and (MeC6H4CHMe2)Ru(C2H4)2. Low temperature protonation studies generated (C6H6)Ru(H)(CZH4)2' and (MeC6H4CHMe2)Ru(H)(C2H4)7ý. These are observed by 1H nmr spectroscopy to undergo two dynamic processe

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35

Brown, Stephen L. "Mechanistic organometallic chemistry." Thesis, University of Oxford, 1986. http://ora.ox.ac.uk/objects/uuid:96218480-9b1d-4d53-9d1d-033e2b451818.

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A number of organometallic transformations related to proposed elementary steps in the reductive polymerization of carbon monoxide are discussed. The use of isonitrile as model ligands for carbon monoxide, with which they are isoelectronic, is proposed. Investigations show that alkyl migration to isonitrile is preferred over migration to carbon monoxide. Iminoformyl products due to hydride migration to isonitrile are not, however, observed. Syntheses of a range of cationic complexes of the type [ (η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)M(L)<sub>2</sub>(CNR)]<sup>+</sup>, [(η<sup>5</sup>-C<su

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36

Helmer, Magdalena. "Meteoric metal chemistry." Thesis, University of East Anglia, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318079.

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37

Thornton, Steven Rupert. "Novel nitrone chemistry." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335298.

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38

Bristow, N. "Infrared laser chemistry." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353552.

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39

Smith, Paul David. "Arene-ruthenium chemistry." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357040.

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40

Rodriguez-Cruz, N. M. "Chemistry of coal." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372569.

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41

Bancroft, Matthew N. "Molybdenum-sulfur chemistry." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301264.

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42

Stone, Jon C. "Allenylidene diruthenium chemistry." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341487.

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43

English, Russell Fowke. "New dithiazole chemistry." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47424.

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44

Wells, C. H. J. "Studies in chemistry." Thesis, University of Edinburgh, 1989. http://hdl.handle.net/1842/11536.

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Studies have been carried out in the following areas: (1) <i>Photochemistry</i> The photochemical behaviour of selected aromatic carbonyl compounds has been studied, especially in relation to the nature of the excited state involved in chemical reaction. The photochemistry of certain pyrimidine-based agrochemicals and related compounds has been investigated from a kinetic and product viewpoint. The dye sensitised photooxidation of these compounds has also been studied. (2) <i>Spectroscopy and Charge-Transfer Complexation</i> The spectroscopic properties and electron acceptor ability of a varie

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45

Marillo, Sialer Estephany. "Chemistry with lasers." Revista de Química, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/123958.

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El número de aplicaciones de la energía laser en el campo científico crece día a día. Estas no solo se han extendido en los campos de química, física y ciencia de materiales, sino también en biología y medicina. Este artículo es una breve introducción a los principios fundamentales del funcionamiento del láser, así como a su aplicación en el campo de la química.<br>The number of applications of lasers in science is constantly growing, with applications stretching from chemistry, physics and materials science to biology and medicine. This article provides a short overview of the fundamentals of

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46

Lastovetska, Ludmila. "Chemistry of emotions." Thesis, Київський національний університет технологій та дизайну, 2019. https://er.knutd.edu.ua/handle/123456789/13080.

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47

Tun, Zin-Min. "Fundamental Chlorophosphazene Chemistry." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1321278169.

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48

Inokuma, Yasuhide. "Chemistry of Subporphyrin." 京都大学 (Kyoto University), 2009. http://hdl.handle.net/2433/124434.

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49

Garcia, Carmen Alicia. "Tracking Chemistry Self-Efficacy and Achievement in a Preparatory Chemistry Course." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1638.

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Self-efficacy is a person's own perception about performing a task with a certain level of proficiency (Bandura, 1986). An important affective aspect of learning chemistry is chemistry self-efficacy (CSE). Several researchers have found chemistry self-efficacy to be a fair predictor of achievement in chemistry. This study was done in a college preparatory chemistry class for science majors exploring chemistry self-efficacy and its change as it relates to achievement. A subscale of CAEQ, Chemistry Attitudes and Experiences Questionnaire (developed by Dalgety et al, 2003) as well as student inte

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50

Brent, Bill M. "The achievements of Chemistry in the Community students compared to traditional chemistry students in an introductory university chemistry course /." free to MU campus, to others for purchase, 1998. http://wwwlib.umi.com/cr/mo/fullcit?p9901220.

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