Log in

Relevant bibliographies by topics / Aliphates / Dissertations / Theses

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

Dissertations / Theses on the topic 'Aliphates'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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 'Aliphates.'

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

Asami, Sam. "Method development for biomolecular solid-state NMR spectroscopy." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2014. http://dx.doi.org/10.18452/17044.

Full text

Abstract:

Im Rahmen der vorliegenden Arbeit, wird ein neuartiges Markierungsschema für die Festkörper-NMR-Spektroskopie vorgestellt, das sogenannte Reduced Adjoining Protonation (RAP) Schema, welches die Protonendetektion sämtlicher Aliphaten erlaubt. Hochaufgelöste, 1H-detektierte 1H,13C Korrelationsspektren wurden erhalten. Des Weiteren wurde der Vorteil von hohen MAS-Frequenzen untersucht. 1H- und 13C-detektierte 3D Zuordnungsexperimente wurden implementiert, welche uns die Zuordnung von 90% aller aliphatischen Resonanzen von alpha-Spektrin SH3 erlaubten. Da die chemische Verschiebung abhängt vom St

APA, Harvard, Vancouver, ISO, and other styles

2

Deverson, Clive Jeremy Francis. "Biotransformations of aliphatic nitriles and amides." Thesis, University of Kent, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304685.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Armfield, Susan J. "Microbial dehalogenation of halogenated aliphatic compounds." Thesis, University of Kent, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253744.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Vuković, Jasna. "Synthesis and characterization of aliphatic hyperbranched polyesters." Doctoral thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982090064.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Löwenhielm, Peter. "Branched aliphatic polycarbonates : synthesis and coating applications." Doctoral thesis, KTH, Fibre and Polymer Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3835.

Full text

Abstract:

<p>The overall aim of this thesis is to describe the synthesisof branched aliphatic polycarbonates and show the potentialapplication of these polymers in the field of powder coatings.The characterization of the polycarbonates was facilitated bythe study of a series of bis-MPAdendrimers, which served asreference of perfectly branched polymers. In addition anε-caprolactone monomer with a bis-MPA pendant unit wassynthesized and polymerized in order to find an alternativesynthetic route hyperbranched polyesters.</p><p>Cationic ring opening polymerization (CROP) of neopentylenecarbonate was utilize

APA, Harvard, Vancouver, ISO, and other styles

6

Hinch, Melissa Marie. "Catalytic asymmetric nucleophilic epoxidation of aliphatic enones." Thesis, University of Sheffield, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425622.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Stead, Angela Louise. "Reactions of alkoxyl radicals with aliphatic esters." Thesis, University of York, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403865.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Brown, Andrew H. Ashby Valerie. "Functional aliphatic polyesters based on cycloaddition methodologies." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2008. http://dc.lib.unc.edu/u?/etd,1839.

Full text

Abstract:

Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2008.<br>Title from electronic title page (viewed Dec. 11, 2008). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry." Discipline: Chemistry; Department/School: Chemistry.

APA, Harvard, Vancouver, ISO, and other styles

9

Jing, Stanley Mofor. "Synthesis of Resveratrol Esters and Aliphatic Acids." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etd/1382.

Full text

Abstract:

Resveratrol (RV) is a naturally occurring phytoalexin of the stilbenoid family produced by some plant species, and present in grape skin, peanuts, and red wine. It has been found to exhibit anti-cancer, anti-inflammatory, anti-viral, anti-aging, cardio protective, and anti-oxidant properties. Bioavailability is a huge setback that limits the potentials of RV. As a result, efforts have been made to design and synthesize RV esters and aliphatic acids in an attempt to increase its bioavailability, solubility in water, and possibly improving its biological activities. Resveratrol esters, 3,5,4'-tr

APA, Harvard, Vancouver, ISO, and other styles

10

Allpress, Caleb J. "Oxidative Aliphatic Carbon-Carbon Bond Cleavage Reactions." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/2003.

Full text

Abstract:

The work presented in this dissertation has focused on synthesizing complexes of relevance to dioxygenase enzymes that oxidatively cleave aliphatic carbon-carbon bonds. The goal of this research was to elucidate mechanistic aspects of the activation of aliphatic carbon-carbon bonds towards cleavage by reaction with oxygen, and also investigate the regioselectivity of these reactions. The oxidative cleavage of a variety of enolizable substrates has been explored by utilizing several transition metal complexes supported by an aryl-appended tris(pyridylmethyl)amine ligand. In order to probe the w

APA, Harvard, Vancouver, ISO, and other styles

11

Lancaster, Ian M. "Synthesis, structure and properties of polyurethane-polymethacrylate graft polymers." Thesis, University of Bradford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236472.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Bacela, Siyabulela Mawande. "The evaluation of autoxidation procedures for the selective oxidation of aliphatic alcohols." Thesis, Port Elizabeth Technikon, 2001. http://hdl.handle.net/10948/59.

Full text

Abstract:

The homogeneously catalyzed oxidation of 1-propanol by dioxygen in glacial acetic acid using cobalt(II)acetate and sodium bromide as the catalyst system has been investigated with the view of determining the significance of various experimental variables during the oxidation. The results of this investigation show unequivocally that a number of reaction variables have a direct influence upon catalytic activity and hence the reaction products. It is quite evident that the major product of this autoxidation reaction is propionic acid with the respective esters as side-products. This is an indica

APA, Harvard, Vancouver, ISO, and other styles

13

Tien, Pamela. "Reductive metabolism of aliphatic tertiary amine n-oxides." Thesis, De Montfort University, 1999. http://hdl.handle.net/2086/10714.

Full text

Abstract:

This study is based on a proposal concerning the feasibility of using aliphatic tertiary amine N-oxides as antiarrhythmic agent prodrugs. Lignocaine was selected as a candidate for prodrug development, because the N-oxide is a non-active, polar derivative of lignocaine and the drug of choice for ventricular arrhythmia, a symptom associated with ischaemic episodes leading to regions of transiently hypoxic heart tissue. An HPLC analytical method was developed to study the metabolism of lignocaine N-oxide. The rapid and sensitive analysis of lignocaine and its metabolites was demonstrated with go

APA, Harvard, Vancouver, ISO, and other styles

14

Hoxworth, Scott. "DEGRADATION OF HALOGENATED ALIPHATIC COMPOUNDS IN SEQUENTIAL ANAEROBIC." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2803.

Full text

Abstract:

The objective of this study was to utilize an alternating anaerobic/aerobic sequence to biologically transform perchloroethylene to non-hazardous end products such as ethylene, CO2 and H2 using a single microbial consortia in a methanogenic and/or a homoacetogenic environment followed by a aerobic methanotrophic environment. Reductive dechlorination of PCE and TCE to cDCE and VC in an anaerobic environment is typically carried out by methanogens, sulfidogens, or homoacetogens but often (e.g. in-situ) leads to an accumulation of daughter compounds (cDCE, VC) which are more toxic than their pare

APA, Harvard, Vancouver, ISO, and other styles

15

Wales, Martin R. "NADP-dependent aliphatic alcohol dehydrogenases in micro-organisms." Thesis, University of Glasgow, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.282010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Brear, Kieron William Grant. "Aliphatic and benzylic diamines : synthesis and biological investigations." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.247766.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Zhang, Youchun. "Chemical modifications and applications of alternating aliphatic polyketones." [S.l. : [Groningen : s.n.] ; University of Groningen] [Host], 2008. http://irs.ub.rug.nl/ppn/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Hossain, Umme Habiba. "Swift Heavy Ion Induced Modification of Aliphatic Polymers." Phd thesis, Technische Universität Darmstadt, 2015. http://tuprints.ulb.tu-darmstadt.de/4333/1/Ph.D.%20Thesis_umme%20Habiba%20Hossain.pdf.

Full text

Abstract:

In this thesis, the high energy heavy ion induced modification of aliphatic polymers is studied. Two polymer groups, namely polyvinyl polymers (PVF, PVAc, PVA and PMMA) and fluoropolymers (PVDF, ETFE, PFA and FEP) were used in this work. Polyvinyl polymers were investigated since they will be used as insulating materials in the superconducting magnets of the new ion accelerators of the planned International Facility for Antiproton and Ion Research (FAIR) at the GSI Helmholtz-Centre of Heavy Ion Research (GSI) in Darmstadt. In order to study ion-beam induced degradation, all polymer foils were

APA, Harvard, Vancouver, ISO, and other styles

19

Kamm, André. "Synthese und Charakterisierung von Block- und Copolymermembranen zur Auftrennung von Aromaten/Aliphaten-Mischungen." [S.l. : s.n.], 2005. http://nbn-resolving.de/urn:nbn:de:bsz:16-opus-59787.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Martinsson, Lina. "Low-temperature synthesis of CdS nanocrystals in aliphatic alcohols." Thesis, Uppsala universitet, Institutionen för materialkemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-127081.

Full text

Abstract:

In this report a novel low temperature synthesis approach of CdS nanocrystals is described starting from well known precursors, Cd(SA) and TOP-S, in a ligand system of aliphatic long chain alcohols. A one-pot synthesis approach is applied using a laboratory microwave heating source. The resulting CdS nanocrystals exhibit an absorbance with a pronounced fine-structure, a photoluminescence with a very high ratio between the band gap peak and the defect peak and a fluorescence quantum yield of 33%. Different synthesis approaches have been investigated by changing heating rate, temperature, precur

APA, Harvard, Vancouver, ISO, and other styles

21

Srivastava, Rajiv. "Novel methods to synthesize aliphatic polyesters of vivid architectures." Licentiate thesis, KTH, Fibre and Polymer Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-511.

Full text

Abstract:

<p>Cross-linked films of ε-caprolactone (CL) and 1,5-dioxepan-2-one (DXO) having various mole fractions of monomers and different cross-link densities were prepared using 2,2’-bis-(-caprolactone-4-yl) propane (BCP) as cross-linking agent and Sn(Oct)2 as catalyst. Reaction parameters were examined to optimize the film-forming conditions. Networks obtained were elastomeric materials, easy to cast and remove from the mould. Effect of CL content and cross-link density on the final properties of the polymer network was evaluated. Thermal, mechanical and surface properties of the films were control

APA, Harvard, Vancouver, ISO, and other styles

22

Srivastava, Rajiv K. "Novel methods to synthesize aliphatic polyesters of vivid architectures /." Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-511.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Liu, Zhijie. "Reductive dehalogenation of chlorinated aliphatic compounds in electrolytic systems." Diss., The University of Arizona, 1999. http://hdl.handle.net/10150/283929.

Full text

Abstract:

A series of chlorinated low-molecular-weight alkanes and alkenes was transformed electrolytically at metal cathodes at potentials from -0.3 to -1.4V (vs. SHE). Products included nonchlorinated hydrocarbons and less chlorinated intermediates. Product distributions are highly dependent on cathode material and applied cathode potential. Kinetics was first-order in the concentration of the halogenated targets. The specific first-order rate constants are function of cathode potential, cathode material, solution characteristics, and reactant identify. When transformation kinetics was governed by pol

APA, Harvard, Vancouver, ISO, and other styles

24

Pretorius, Nadine Odette. "Multidimensional analytical techniques for the characterization of aliphatic polyesters." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80127.

Full text

Abstract:

Thesis (PhD)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Complex polymers are defined by their distributive properties with respect to molecular weight, chemical composition, functionality and molecular topology. As a result, polymer properties are very frequently determined not only by one of these entities but by the correlation of two or more distributions. Aliphatic polyesters are industrially implemented in high performance coatings, paints and varnishes. However, it is typically difficult to correlate the resulting properties with the synthesis parameters as these polymers v

APA, Harvard, Vancouver, ISO, and other styles

25

Hamilton, Lesley M. "The synthesis and characterisation of some aliphatic hyperbranched polyesters." Thesis, Durham University, 1996. http://etheses.dur.ac.uk/5444/.

Full text

Abstract:

The attempted syntheses of potential AB(_2) monomers for the production of hyperbranched polyesters has been described. The synthesis of poly(diethyl 3- hydroxyglutarate) has been reported and the characterisation of the products discussed fully. The use of soft ionisation mass spectrometry (MALDI-TOF MS) has been described and the results illustrate the number of different processes occurring during the polyesterification. (^13)C nmr spectroscopy has been shown to be a viable technique in the determination of the degree of branching of these hyperbranched polymers. The synthesis of core termi

APA, Harvard, Vancouver, ISO, and other styles

26

Stoecker, Matthew A. "Biodegradation of aromatic and aliphatic hydrocarbons by Rhodococcus spp. /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/11495.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Aldersley, Simon James. "Synthesis and characterisation of aliphatic hyperbranched polyamidoamines and polyamides." Thesis, Durham University, 2002. http://etheses.dur.ac.uk/3964/.

Full text

Abstract:

Dendrimers are perfectly branched macromolecules possessing large internal cavities and a known number and location of terminal groups. This unique architecture leads to many interesting properties and countless potential applications have been discussed. Their synthesis involves numerous repetitive steps, often requiring protection and deprotection chemistry and complex purification procedures. This limits their availability and leads to extremely high costs, a factor that has limited their use. Polyamidoamine (PAMAM) dendrimers, the first well-established series of dendrimers, were reported

APA, Harvard, Vancouver, ISO, and other styles

28

Adeyinka, Adedapo Sunday. "Protonation sequence of aliphatic linear polyamines : a theoretical study." Thesis, University of Pretoria, 2016. http://hdl.handle.net/2263/60820.

Full text

Abstract:

In this work, several computational techniques and protocols have been developed and applied in an attempt to resolve the longstanding controversy in literature as to the preferred protonation site i.e. primary (HLp) or secondary (HLs) nitrogen atom in singly protonated aliphatic linear polyamines. To achieve this aim, a dedicated conformational search protocol (CSP) for identifying relevant low energy conformers (LECs) of any given aliphatic linear polyamine from a large set of conformers initially generated using MMFF(aq) force field and Monte Carlo algorithm, was developed. Using representa

APA, Harvard, Vancouver, ISO, and other styles

29

Brewster, Ryan Jude Stephen. "Cometabolic Modeling of Chlorinated Aliphatic Hydrocarbons using SEAM3D Cometabolism Package." Master's thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/37103.

Full text

Abstract:

Bioremediation of chlorinated aliphatic hydrocarbon (CAH) compounds commonly found at contaminated sites has been an area of focus in recent years. The cometabolic transformation of CAH compounds is important at sites where the redox condition does not favor natural attenuation or populations of indigenous microorganisms are relatively low. At sites where the ground-water system is aerobic, monitored natural attenuation strategies will not meet remediation objectives, or both, enhanced bioremediation via cometabolism is an option. Models are needed to simulate cometabolism in an effort to i

APA, Harvard, Vancouver, ISO, and other styles

30

Myers, Samuel. "Electrochemical Detection of Aliphatic Sulfur Compounds in Liquid Coal Extracts." TopSCHOLAR®, 1994. http://digitalcommons.wku.edu/theses/945.

Full text

Abstract:

The presence of sulfur compounds in coal is a serious environmental problem that affects the coal industry. This problem is due to the fact that organic sulfur is not separated or removed during any physical cleaning process. Organic sulfur is removed only during a more costly chemical desulfurization process. The kinds of organosulfur compounds in coal are generally known, but the quantity of each type of compound and the distribution of these compounds throughout the coal matrix has not been studied extensively. The objective of this research was to investigate the more reactive and chemical

APA, Harvard, Vancouver, ISO, and other styles

31

Galmes, Meerhoff Carolina. "Novel aliphatic hyperbranched polyurethanes : synthesis, characterisation, scale-up and properties." Thesis, Imperial College London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420591.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Tempelaar, Sarah. "Synthesis and post-polymerisation functionalisation of aliphatic poly(carbonate)s." Thesis, University of Warwick, 2012. http://wrap.warwick.ac.uk/49815/.

Full text

Abstract:

This work describes the controlled organocatalytic ring-opening polymerisation (ROP) of cyclic carbonates with pendant groups for the preparation of functional aliphatic poly(carbonate)s and poly(estercarbonate) s. Their subsequent post-polymerisation functionalisations were studied yielding a range of functional aliphatic poly(carbonate)s. Chapter 1 reviews the preparation of cyclic carbonates with pendant functionalities, their ring-opening polymerisation and the postpolymerisation modifications of the resulting poly(carbonate)s. The properties and some applications of functional poly(carbon

APA, Harvard, Vancouver, ISO, and other styles

33

Quiroz, Hugo Alejandro Campos-de. "Genetic analysis of the aliphatic glucosinolate pathway in Arabidopsis thaliana." Thesis, University of East Anglia, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267260.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Wu, Wai Shing. "Measurements of amino acids and aliphatic amines in ambient aerosols /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?CHEM%202003%20WU.

Full text

Abstract:

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 226-231). Also available in electronic version. Access restricted to campus users.

APA, Harvard, Vancouver, ISO, and other styles

35

Fisher, Michael B. "The enzymology and mechanisms of cytochrome P450-catalyzed aliphatic desaturation /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/8158.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Trowbridge, Aaron Daniel. "New strategies for the synthesis and functionalization of aliphatic amines." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/287941.

Full text

Abstract:

The invention of catalytic processes that convert feedstock chemicals into pharmacologically-privileged amines is a landmark challenge in organic synthesis. This thesis describes the development of three novel transition-metal catalyzed processes for the synthesis of alkylamines that attempts to meet this challenge. The first Pd-catalyzed methylene β-C−H carbonylation of alkylamines to form substituted β-lactams is reported. Through the synergistic use of a Pd-catalyst and Xanpthos ligand, secondary amines underwent exclusive methylene β-C−H activation in high yields and diastereoselectivities

APA, Harvard, Vancouver, ISO, and other styles

37

Gigli, Matteo <1984&gt. "Novel etheroatom containing aliphatic polyesters for biomedical and environmental applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5617/.

Full text

Abstract:

Biodegradable polymers for short time applications have attracted much interest all over the world. The reason behind this growing interest is the incompatibility of the polymeric wastes with the environment where they are disposed after usage. Synthetic aliphatic polyesters represent one of the most economically competitive biodegradable polymers. In addition, they gained considerable attention as they combine biodegradability and biocompatibility with interesting physical and chemical properties. In this framework, the present research work focused on the modification by reactive blending

APA, Harvard, Vancouver, ISO, and other styles

38

Durand, Pierre-Luc. "Fatty acids as a source of original aliphatic polycarbonate materials." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0710.

Full text

Abstract:

Cette thèse porte sur la valorisation de dérivés d’acides gras dans l’objectif d’élaborer des matériaux polycarbonates aliphatiques (PCAs) bio-sourcés originaux. Dans cette optique, deux plateformes de carbonates cycliques à 6 chaînons (6CCs) ont été synthétisés en utilisant des voies d’accès impliquant soit la formation d’un intermédiaire de type malonate ou un couplage entre un acide gras et le 2-amino-1,3-propanediol. La polymérisation par ouverture de cycle de ces monomères a été étudiée. La première plateforme de 6CCs a été polymérisée en présence de Sn(Oct)2 comme catalyseur, donnant acc

APA, Harvard, Vancouver, ISO, and other styles

39

Dyet, Julie Anne. "Laser spectroscopy and photochemistry of C-Nitroso compounds." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1023.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Kabatek, Ryszard. "Einfluss der Azeotropie auf die "wahre" Siedekurve komplexer Vielstoffsysteme aus Aliphaten, Aromaten und n-Butanol." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=960667202.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Leuchs, Susanne [Verfasser]. "Continuous enzymatic synthesis of enantiopure, aliphatic (R)-2-alcohols / Susanne Leuchs." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2014. http://d-nb.info/1048604373/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Meyer, Thomas, Dong Jae Baek, Robert Bittman, et al. "Membrane properties of cholesterol analogs with an unbranched aliphatic side chain." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-190979.

Full text

Abstract:

The interactions between cholesterol and other membrane molecules determine important membrane properties. It was shown that even small changes in the molecular structure of cholesterol have a crucial influence on these interactions. We recently reported that in addition to alterations in the tetracyclic ring structure, the iso-branched side chain of cholesterol also has a significant impact on membrane properties (Scheidt H. et al. 2013 Angew. Chem. Int. Ed. Engl. 52, 12848-12851). Here we used synthetic cholesterol analogs to investigate the influence of an unbranched aliphatic side chain of

APA, Harvard, Vancouver, ISO, and other styles

43

Fernandez, Gimenez Marta. "Iridium-catalysed cleavage and formation of unstrained aliphatic carbon-carbon bonds." Thesis, University of Liverpool, 2018. http://livrepository.liverpool.ac.uk/3018330/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Genovese, Laura <1987&gt. "Synthesis and Characterization of New Aliphatic Biodegradable Polyesters for Packaging Applications." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7559/.

Full text

Abstract:

Until now, petrochemical-based plastics have been extensively used as packaging materials thanks to their low cost and excellent physic-mechanical properties. Unfortunately, as it is well-known, these materials are not readily degraded in the environments where they are disposed once their function has ended. As a consequence, thousands of tons of plastic packaging are disposed in landfills every year, causing a continuous pollution increment. In this view, replacing non-degradable plastics based on fossil oil with sustainable bio-based, biodegradable materials for short time applications is o

APA, Harvard, Vancouver, ISO, and other styles

45

Eichstadt, Amy Elizabeth. "Structure-Property Relationships and Adhesion in Polyimides of Varying Aliphatic Content." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/28379.

Full text

Abstract:

Aromatic polyimides have found widespread applicability which can be partially attributed to their thermal stability, chemical resistance, and high glass transition temperature. However, deficiencies in their processability, solubility, transparency, and relatively high dielectric constants do not always provide the optimum properties for many specialty microelectronics applications. The incorporation of aliphatic segments to form partially aliphatic polyimides, has been used to counteract these shortcomings. Many of the potential uses of partially aliphatic polyimides require them to adhere t

APA, Harvard, Vancouver, ISO, and other styles

46

Kimani, Serah. "The crystal structure of an aliphatic amidase from Geobacillus pallidus RAPc8." Master's thesis, University of Cape Town, 2007. http://hdl.handle.net/11427/8908.

Full text

Abstract:

Includes bibliographical references (leaves 123-136).<br>Amidases are a group of carbon-nitrogen hydrolysing enzymes that catalyze the conversion of amides to corresponding carboxylic acids and ammonia. These enzymes are of great interest in synthetic industries where they are used for mass production of acidic products. Aliphatic amidase from Geobacillus pallidus RAPcS (RAPcS amidase), which belongs to the nitrilase superfamily of enzymes, has recently been characterised biochemically. It shows both amide hydrolysis and acyl transfer activities, and also exhibits stereo selectivity for some e

APA, Harvard, Vancouver, ISO, and other styles

47

Lord, Elin. "Olfactory discrimination of aliphatic 2-ketones and 1-alcohols in South African fur seals (Arctocephalus pusillus pusillus)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18932.

Full text

Abstract:

Odor discrimination ability was tested in four female South African fur seals (Arctocephalus pusillus pusillus) using a food-rewarded two-choice instrumental conditioning paradigm. The seals’ ability to distinguish between members of homologous series of aliphatic ketones (2-butanone to 2-heptanone) and alcohols (1-butanol to 1-heptanol) was assessed. The results showed that three out of four seals successfully discriminated between all of their stimulus combinations in both classes of odorants. One seal succeeded to reach the discrimination criterion with all 2-ketones but failed with all 1-a

APA, Harvard, Vancouver, ISO, and other styles

48

Gillmore, Adam Thomas. "Poly-L-leucine : applications to asymmetric catalysis and stereoselective synthesis." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366977.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Rabbitt, Lynsey C. "Some kinetic and equilibrium studies of the reactions of nitrobenzofurazan derivatives with nucleophiles." Thesis, Durham University, 2000. http://etheses.dur.ac.uk/4623/.

Full text

Abstract:

The reactions of 4,6-dinitrobenzofuroxan, (DNBF) with aniline and six of its N- and ring- substituted derivatives have been studied. It is known that aniline usually reacts as a nitrogen nucleophile, forming nitrogen-bonded σ-adducts with trinitrobenzene, (TNB) in the presence of a strong base. However, in acidic solutions, a-adducts are formed with bonding between a ring carbon atom of the anilines and the 7-position of DNBF. A value of 2.0 for k(_H)/k(_D), the kinetic isotope effect, indicates that bond formation is largely rate determining in the substitution pathway. Estimates were made fo

APA, Harvard, Vancouver, ISO, and other styles

50

Kowlessur, Parikshant. "Engineering homoaromatic substrate specificity into aliphatic-specific Geobacillus pallidus RAPc8 nitrile hydratase." Thesis, University of the Western Cape, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9829_1297833530.

Full text

Abstract:

<p>Geobacillus pallidus RAPc8 is a thermophilic nitrile-degrading isolate, obtained from thermal sediment samples of a New Zealand hot spring. The G. pallidus RAPc8 NHase gene has been cloned and expressed in E. coli. The recombinant NHase exhibits nitrile-degrading activity at 50 &deg<br>C, capable of degrading branched, linear and cyclic heteroaromatic nitrile substrates. However, no activity was found on homoaromatic nitrile substrates such as benzonitrile. In the present study, high levels of activity on benzonitrile were detected with a double mutant &beta<br>F52G&beta<br>F55L. Kinetic an

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!