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Rozprawy doktorskie na temat „Organic acids”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Turkmenoglu, Secil. "Organic Acids Production From Cheese-whey." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12607709/index.pdf.

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In this study, production of organic acids from cheese-whey was studied. Optimization of organic acids production was performed in semi-batch and batch reactors. Two sets of experiments were performed. First set of experiments were performed in semi-batch reactors for the optimization of organic loading rate (OLR) and hydraulic retention time (HRT). As a result of Set 1 experiments optimum OLR was found to be 15 g COD l-1. Second set of experiments were performed in batch reactors by using the optimum OLR found in Set 1 experiments. Set 2 experiments were conducted to study the effect of using

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2

Adams, FV, PA Olubambi, FH Potgieter, and Der Merwe F. Van. "Corrosion resistance of duplex stainless steels in selected organic acids and organic acid/chloride environments." Anti-Corrosion Methods and Materials, 2010. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001195.

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Abstract Purpose – The purpose of this paper is to supplement the scant previous investigations on the corrosion behaviour of 2205 and 2507 duplex stainless steels in selected organic acids containing chloride additions. Design/methodology/approach – Microstructural examination of the alloys was first carried out, after which the corrosion behaviour of the alloys in citric, oxalic, formic and acetic acids containing chloride additions at varying temperatures was studied using electrochemical techniques. Findings – The alloy 2507 material had a larger grain size than did the alloy 2205 sample.

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3

Ogden, Sharon Kay. "Preservation of meat by organic acids." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339579.

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4

Khademi, Zahra. "Organic acids behavior in calcareous soils." Thesis, Bangor University, 2006. https://research.bangor.ac.uk/portal/en/theses/organic-acids-behavior-in-calcareous-soils(cc53b48c-64b5-4037-8a1f-d4382e2dfac7).html.

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Organic acids have been hypothesized to be important in mobilizing nutrients in calcareous soils, however, evidence to support this was lacking. This thesis investigates the effect of increasing concentrations of H-citrate, K-citrate, H-oxalate and K-oxalate on the solubility and uptake of P, Fe, Mn, Zn and Cu in plants growing in calcareous soils. In this study, the fate and capacity of organic acids as mechanisms for solubilizing mineral nutrients was investigated by measuring the sorption, and biodegradation reactions of citrate and oxalate in soil. This study has shown that the sorption re

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5

Myers, Eddie Leonard. "Heterocyclic aromatic nucleic acids." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79056.

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In order to investigate the role played by the aromatic moiety of Aromatic Peptide Nucleic Acids (APNAs) in their ability to hybridize with RNA and DNA, as well as improve the solubility of APNA oligomers in aqueous solutions, a new generation of heterocyclic monomers were designed. APNA monomers, where the nucleobase can be thymine, cytosine adenine or guanine, with backbones contain thiophene and pyridine moieties were synthesized. Suitably protected APNA-APNA and PNA-APNA dimers were also synthesized as building blocks for the solid phase synthesis of APNA-PNA chimeras and APNA homop

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6

Buttery, C. D. "Metallations of heterocylic acids." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.353564.

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7

Cai, Chaozhong. "Asymmetric synthesis of chi-constrained pyroglutamic acids, glutamic acids and prolines for peptides and peptidomimetics." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/280129.

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The recent upsurge of interest in the peptide-based drug molecules has been accompanied by a great deal of attention to the design of stereochemically defined non-proteinogenic amino acids. As a continuous effort to develop efficient syntheses of χ-constrained amino acids in our group, we recently have developed a practical methodology for the asymmetric synthesis of substituted pyroglutamic acid, glutamic acid and proline analogues, which are of important use in examining the relationships between conformation and bioactivities of biologically important peptides (e.g. DPDPE, α-MSH). The key s

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8

Starkov, P. "Applications of boronic acids in organic synthesis." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1302408/.

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This thesis describes progress on the application of boronic acids and borate esters as catalysts and reagents in synthetic organic chemistry, focusing on two areas: one-pot enolate formation/aldol reactions and amide bond formation. Chapter 1 introduces the reader to boronic acids and derivatives thereof, their methods of preparation and their use in synthetic organic chemistry as reactants, reagents and catalysts. Chapter 2 covers current chemical methods and cellular alternatives for amide bond formation. Here, we also discuss our use of boron reagents for the activation of carboxylic acids

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9

Toom, Lauri. "Bispidine Derivatives : Synthesis and Interactions with Lewis Acids." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Universitetsbiblioteket [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6735.

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10

Patience, J. M. "Routes to substituted tetramic acids." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235998.

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11

Drouard, David. "Synthetic investigations of pseudomonic acids." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271875.

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12

Bhatt, Ulhas. "Functionalized 2-oxopiperazines from amino acids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0014/NQ55303.pdf.

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13

Kontos, Christopher D. "The Irreversible Inhibition of D-amino Acid Oxidase with Trans-3-bromoacrylic Acid and Four Others Halo-vinylic Acids." W&M ScholarWorks, 1985. https://scholarworks.wm.edu/etd/1539625302.

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14

Levin, D. "The stereocontrolled synthesis of unsaturated acids." Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373257.

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15

Blench, Toby Jonathan. "Synthetic studies on the Zaragozic acids." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250173.

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16

Ichihara, Osamu. "Asymmetric synthesis of #beta#-amino acids." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259948.

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17

North, M. "New synthetic routes to amino acids." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235134.

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18

Shim, Sung Bo. "Synthesis of some novel amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293408.

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19

Chambers, Mark Stuart. "The asymmetric synthesis of thiotetronic acids." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.480554.

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20

Spivey, Alan Christopher. "The synthesis of #gamma#-amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293418.

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21

Glen, Anthony D. "Synthetic studies on cyclopropane fatty acids." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386040.

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22

Cherrington, Christina Anne. "The antibacterial activity of short-chain organic acids." Thesis, University of Bristol, 1989. http://hdl.handle.net/1983/77ce9cef-1fa2-4387-8b84-f26df3f53717.

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23

van, Schaik Joris W. J. "Binding of metals to macromolecular organic acids in natural waters : does organic matter? /." Uppsala : Department of Soil and Environment, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200872.pdf.

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24

Guthrie-Strachan, Jeffry James. "Chemical studies of necic acid analogues." Thesis, Rhodes University, 1997. http://hdl.handle.net/10962/d1006909.

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Various aldehydes have been reacted with methyl acrylate under Baylis-Hillman conditions, using DABCO as a catalyst, to afford a range of α-substituted acrylic esters containing an allylic hydroxy group. Selected Baylis-Hillman products have been brominated, hydrolysed and acetylated to afford substrates for the synthesis of necic acid analogues. The diastereo- and regioselectivity of nucleophilic attack, using sodium methylmercaptan, on the Baylis-Hillman products and selected brominated derivatives was investigated. The allylic hydroxy compounds favour conjugate addition with the generation

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25

Parsons, Andrew Frederick. "The synthesis of the Kainoid amino acids." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293473.

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26

Barrett, D. "Synthetic approaches to #alpha#-amino sulphinic acids." Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374124.

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27

Worrall, Julia. "Asymmetric synthesis of #alpha#-heterosubstituted carboxylic acids." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242305.

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28

Berthelot, Didier. "Synthesis of novel heterocyclic #alpha#-amino acids." Thesis, Open University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367226.

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29

Whitcombe, Nicole Jane. "The synthesis of conformationally constrained amino acids." Thesis, King's College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.251584.

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30

Abouzreba, Salem Ali. "Volatile fatty acids in the ambient atmosphere." Thesis, University of Bristol, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388115.

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31

Hooper, Peter. "Synthesis and properties of atropisomeric phosphinous acids." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368637.

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32

Burneo, Saavedra Iván Patricio. "Metal-Organic Frameworks made of amino acids and adenine: chirality and hydrochromism." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/457357.

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La presente Tesis ha sido enfocada en la síntesis de Polímeros de Coordinación (CPs) y Metal-organic frameworks (MOFs) a partir de ligandos basados en biomoléculas para la obtención de materiales nuevos y funcionales. Sobre esta premisa, la Tesis aborda dos líneas de investigación principales que han sido desarrolladas para alcanzar los objetivos propuestos: i) estudiar la influencia de la razón enantioméricos de dos ligandos quirales sobre la estructura y quiralidad en Metal-Organic Frameworks, y ii) el diseño y la síntesis de nuevos polímeros de coordinación basados en adenina, ligan

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33

Havey, Daniel Keith. "Vibrational spectroscopy of atmospherically relevant hydrogen bonded organic acids." Diss., Connect to online resource, 2005. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3207717.

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34

Khan, Ikhtiar. "Solubility relationships of organic acids in aqueous atmospheric systems." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357177.

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35

Goosen, Neill Jurgens. "Organic acids as potential growth promoters in abalone culture." Thesis, Stellenbosch : Stellenbosch University, 2007. http://hdl.handle.net/10019.1/16416.

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ENGLISH ABSTRACT: The first successful captive spawning of the South African abalone Haliotis midae occurred in the 1980’s and subsequently the commercial abalone industry in South Africa has developed, with an estimated investment of US$ 12 million and annual output of 500 to 800 tons by 2001, making South Africa the biggest abalone producer outside of Asia. Natural kelp is currently the major feed and the development of a suitable substitute, and improved disease management in abalone culture are seen as the primary factors limiting expansion of the industry in South Africa. Further, a

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36

Fajardo, Nino De Rivera Vanessa. "Localized CO2 Corrosion in the Presence of Organic Acids." Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1300466494.

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37

Sly, Alexandra Claire. "Improvement of zein dough characteristics using dilute organic acids." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/40337.

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The only treatment for coeliac disease, a common autoimmune disorder, is life-long adherence to a gluten-free diet. However, the replacement of wheat gluten, a key structural and functional component in bread, poses a major technological challenge for food scientists. The use of non-wheat cereal proteins, as alternatives to gluten, shows much promise in gluten-free bread making. Literature has shown that when zein, the maize prolamin protein, is subjected to wet heat above its glass transition temperature (Tg), the protein becomes viscoelastic, rubbery and dough-like. Gluten-like fibrils are v

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38

Zahir, Aishath Zehereen. "Degradation of e-glass fibre in selected organic acids." Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/1654.

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E-glass has been widely used as a reinforcing material for years, especially as a plastic reinforcer in the production of GRP (Glass Reinforced Plastic). Failure of GRP materials under stress came in to the picture quite recently. Since then studies have been conducted in an attempt to understand the causes and the underlying behaviour.Except for the last section of the research (analysis using a kinetic approach) where glass fibre was cut out to weigh approximately 1.0g, standard sized specimens were soaked in the required acid solutions of desired concentrations for varying temperatures and

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39

Zahir, Aishath Zehereen. "Degradation of e-glass fibre in selected organic acids." Curtin University of Technology, Department of Applied Chemistry, 2008. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=128425.

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E-glass has been widely used as a reinforcing material for years, especially as a plastic reinforcer in the production of GRP (Glass Reinforced Plastic). Failure of GRP materials under stress came in to the picture quite recently. Since then studies have been conducted in an attempt to understand the causes and the underlying behaviour.<br>Except for the last section of the research (analysis using a kinetic approach) where glass fibre was cut out to weigh approximately 1.0g, standard sized specimens were soaked in the required acid solutions of desired concentrations for varying temperatures

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40

Ahmed, Sharmin Nayela. "Kinetic resolution of carboxylic acids by Candida rugosa lipase." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68151.

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A substrate structure rule to predict the enantioselectivity of Candida rugosa lipase (CRL) towards $ alpha$-substituted carboxylic acids is proposed. Lipase from Candida rugosa resolved methyl $ alpha$-substituted phenylacetates -5. These substrates were examined to understand the influence of steric and the electronic nature of the substituents at the chiral center on the enantioselectivity. Crude CRL was partially enantioselective towards substrates -3, and highly selective towards and, E $>$ 100. Partial purification of crude CRL by 2-propanol extraction and separation by an ion exchange c

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41

Mohamed, Nazim. "Synthesis of derivatized oxopiperazines from amino acids." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0016/NQ44518.pdf.

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42

Christian, Paul William Nicholas. "Nitroalkenes in the asymmetric synthesis of amino acids." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267891.

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43

Visani, N. "Studies in the synthesis of unsaturated anacardic acids." Thesis, Brunel University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233350.

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44

Farthing, Christopher Neil. "The synthesis of optically active #alpha#-amino acids." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308737.

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45

Andrews, Mark David. "Novel routes to cyclic amino acids and heterocycles." Thesis, University of Oxford, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297124.

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46

Amberson, Julie Ann. "Voltammetric study of dihydroxamic acids and their complexes." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317065.

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47

Wishart, Neil. "General approaches to side functionalised #alpha#-amino acids." Thesis, University of Newcastle Upon Tyne, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357082.

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48

Greeves, N. "Horner-Wittig synthesis of unsaturated alcohols and acids." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377835.

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49

Karimi, Farhad. "[11C]Carbon Monoxide in Palladium- / Selenium-Promoted Carbonylation Reactions : Synthesis of 11C-Imides, Hydrazides, Amides, Carboxylic Acids, Carboxylic Esters, Carbothioates, Ketones and Carbamoyl Compounds." Doctoral thesis, Uppsala universitet, Avdelningen för organisk kemi, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-2931.

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[11C]Carbon monoxide in low concentrations has been used in palladium- or seleniummediated carbonylation reactions such as the synthesis of 11C-imides, hydrazides, amides, carboxylic acids, esters, carbothioates, ketones and carbamoyl compounds. In these reactions aryl iodides have been used in most cases. However, less reactive aryl triflate, chloride and bromides were activated using tetrabutylammonium iodide. The reactivities of nucleophiles may have influence on the radiochemical yield of the 11Clabelled compounds. Carboxyamination of aryl halides using aniline derivatives yielded 10% of t

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50

Chatterjee, Subhrangsu. "Physicochemical and Structural Aspects of Nucleic Acids." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8360.

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