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Thematische Bibliographien / Sugar and sugar manufacturing / Dissertationen

Dissertationen zum Thema „Sugar and sugar manufacturing“

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Veröffentlicht am 25. Juli 2024

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1

Modigh, Maja. „Mapping of causes for variation in quality of sugar in chocolate manufacturing“. Thesis, Linköpings universitet, Teknisk biologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-125234.

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The main purpose of the report is to present possible reasons and solutions for variation in quality of sugar used in confectionery manufacturing, with focus on chocolate manufacturing, at Cloetta Sverige AB in Ljungsbro. The project has its purpose to optimize the quality of both the sugar and manufacturing processes in a long-term perspective, since the variation in quality of the sugar affects, more or less, all manufacturing processes and causes yield losses. Cloetta Ljungsbro uses a pneumatic conveying system to transfer the sugar within the factory and when unloading the sugar from delivery trucks. A various of different analyses were performed in order to study the sugar quality; water content analyses in forms of Karl Fischer titration and particle size distribution analyses with help from sieving. During the sugar sampling time period, an observation of the air pressure used by the road tanker while unloading sugar at Cloetta and the lead time as sugar was delivered was executed. Moreover, data of the dew point in the pneumatic conveying system and, both temperature and humidity in the sugar silos, were collected. As a result, most of the sugar particles breakage occurred somewhere between the delivery road tanker and while in the storage silos. Most likely it is due to the use of high pressure when unloading the sugar that the particle size distribution of the sugar varies, but also causes the temperature to reach a higher temperature than recommended. Furthermore, the water content of the sugar was higher in the beginning of the autumn. Further investigations of the effect of unloading the sugar and storage of sugar should be done, but also analyse the air velocity used within the pneumatic conveying system.

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2

Jiang, Jue. „Comparison of Alternative Global Supply Chain Design Approaches for Blood Sugar Strips Manufacturing“. Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1480519984058482.

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3

Wilson, Darin C. „Comparison of Alternative Manufacturing Systems for Global Supply ChainBusiness Strategies in Blood Sugar Monitoring Industry“. Ohio University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1446035356.

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4

Howard, Joshua M. „Catalytic conversion of sugar manufacturing by-products to 5-(chloromethyl) furfural and 5-(hydroxymethyl) furural“. Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/107143/2/Joshua_Howard_Thesis.pdf.

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This thesis is a contribution to the development of catalytic processes for the production of platform chemicals from agricultural residues. It examined catalytic processes for the production of chloromethylfurfural and hydroxymethylfurfural from sugar cane bagasse and molasses. These chemicals can be used for the production of fuels, pharmaceuticals and polymers.

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5

Younes, Sinaki Roohollah. „Financial Analysis and Global Supply Chain Design : A Case Study of Blood Sugar Monitoring Industry“. Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1509119632628001.

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6

Ates, Ozan K. „Global Supply Chain and Competitive Business Strategies: A Case Study of Blood Sugar Monitoring Industry“. Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1364987292.

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7

Beltrão, Gabriel Magalhães. „A economia colonial e a particularidade da manufatura açucareira“. Universidade Federal de Alagoas, 2013. http://www.repositorio.ufal.br/handle/riufal/1580.

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This dissertation is a study subject analysis of colonial sugar manufacturing with the aim of seeking to seize their particularities in relation to manufactures classic studies by Marx. Because of the sugar mills are inserted in the historical process of colonization, became necessary to discuss the colonial economy by exposing two Marxist interpretations to the question. Such interpretations about the global economy have enabled us to understand the colonial socioeconomic fundamentals that explain the striking features of the craft such as slavery and the division of labor. Through iconographic resources and time reports seek to highlight the character existing manufacturing from the earliest mills in the sixteenth century, emphasizing the means of labor and organization oh production that were used for export production. Improving manufacturing occurred in the seventeenth century will be considered on its implications on workers and productivity, showing that the slave relations of production were consistent with technical and organizational typical of mercantile capitalism. Cooperation based on division of labor – manufacture – is presented not only as compatible with slave labor, but also as a necessity for the systematic use of this type of production relations. Such relationships production deepened further separation of manual work in relation to intellectual work hallmark of manufacture, and therefore print a particularity to manufacture sugar which is designated as an imperfection in relation to european manufacture. Besides this particularity of socioeconomic nature, the mill suffered from another flaw resulting from raw material benefit, that it had negative effects as it would undermine the predictability of production common in other productions. Thus, the particularity of manufacture sugar will appear as imperfections imposed by slave relations of production and the contingency imposed by raw material.
Fundação de Amparo a Pesquisa do Estado de Alagoas
A presente dissertação tem por objeto de estudo a análise da manufatura açucareira colonial com o intuito de buscar apreender suas particularidades em relação às manufaturas clássicas estudadas por Marx. Pelo fato dos engenhos de açúcar estarem inseridos no processo histórico de colonização, tornou-se necessário discorrer sobre a economia colonial através da exposição de duas interpretações marxistas para a questão. Tais interpretações globais sobre a economia colonial nos possibilitaram compreender os fundamentos socioeconômicos que explicam características marcantes dos engenhos, tais como a escravidão e a divisão do trabalho. Através de recursos iconográficos e de relatos de época buscaremos evidenciar o caráter manufatureiro já existente desde os primeiros engenhos no século XVI, enfatizando os meios de trabalho e a organização da produção que eram utilizados na produção para exportação. O aprimoramento manufatureiro ocorrido no século XVII será analisado em suas implicações sobre os trabalhadores e a produtividade, demonstrando-se que as relações escravistas de produção eram compatíveis com progresso técnico e organizativo típicos do capitalismo mercantil. A cooperação baseada na divisão do trabalho – manufatura – é apresentada não somente como compatível com o trabalho escravo, mas também como uma necessidade para a utilização sistemática deste tipo de relações de produção. Tais relações de produção aprofundam ainda mais a separação do trabalho manual em relação ao trabalho intelectual, característica marcante da manufatura, e, por conseguinte, imprimem uma particularidade à manufatura açucareira que será designada como uma imperfeição em relação à manufatura européia. Além desta particularidade de natureza socioeconômica, o engenho sofria com outra imperfeição decorrente da matéria-prima beneficiada, que surtia efeitos negativos à medida que prejudicava a previsibilidade da produção comum em outras produções. Desta forma, a particularidade da manufatura açucareira será apresentada como imperfeições impostas pelas relações escravistas de produção e pela contingência imposta pela matéria-prima.

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8

Richards, James. „Sugar Skulls“. Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/english_diss/8.

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This dissertation is a collection of four long short stories about contemporary Americans written in the mode of psychological realism. “Bare Knuckles” depicts the struggles of a young man trying to “make it” in the world of illegal boxing. “ZOSO” focuses on the breakdown of an upper-middleclass family forced to move from the rustbelt to the “New South.” In “Dusted,” a man ill-equipped to navigate through the adult world turns to substance abuse and violence as a “way out.” “Sugar Skulls” explores the fascination with death in the punk rock world.

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9

Stetz, Rebecca J. E. „Sugar mimics“. Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343469.

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10

Wennerholm, Kerstin. „Influence of sugar and sugar alcohols on mutans streptococci“. Göteborg, Sweden : Göteborg University, 1994. http://books.google.com/books?id=Sq1pAAAAMAAJ.

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11

Stolz, Hendrik Nicolaas Petrus. „Invert sugar from sugar cane molasses : a pilot plant study“. Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1986.

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An investigation was done into the recovery of invert sugar from sugar cane molasses. A pilot plant was designed and constructed to evaluate the clarification and separation of molasses to produce invert sugar syrup. The aim of the pilot plant was to prove the process and deliver data so as to facilitate the design and prove the financial viability of a commercial plant. The pilot plant had to process 300 kg/day of molasses. The clarification of molasses by centrifugal separation, a known desludging process, did not produce a product of acceptable quality which could be used in a chromatographic separator. The results were disappointing. The product obtained was also not suitable for dead end pressure filtration. The turbidity remaining after the centrifugal separation also did not respond to a second flocculation process. Conventional settling clarification was investigated. Seven factors that could influence the consolidation and settling of suspended solids in molasses were identified, namely: the age of the diluted molasses, the temperature of the flocculated mixture, the variations across various batches of flocculant, the effect of reaction time of the phosphoric acid, the optimum flocculant dosing concentration, the optimum concentration of the molasses solution and the effect of increasing the acid dosage. The optimum conditions to clarify molasses through settling were found to be: fresh molasses, at 28 Brix and 60°C, allowing 10 min intervals between acidification with 3,75 g (as 100%) phosphoric acid/ kg dry material (assumed equal to Brix) and neutralisation with 5 g (as 100%) caustic/kg dry material (assumed equal to Brix), flocculation with any batch of flocculant 6195, dosed as a 1000 ppm solution. Commercial equipment was evaluated. The pilot plant E-cat clarifier was operated at 300 l/h and a thick sludge formed. The overflow was clear and it could be filtered. The molasses obtained was suitable for chromatographic separation. The recovery of sugars from molasses sludge has economic merit. From the evaluation of centrifugal separation and gravity separation it is clear that gravity separation again is the best method. The sweet-water obtained is consistent within the clarity requirement of 10 NTU/Brix and can be used to dilute raw molasses in the upstream processing step. The clarification process that was developed is patented. [Bekker, Stolz et.al. (2001)] A sugar recovery of 93.9 mass % at a purity of 99.7 mass % from molasses, was achieved using a simulated moving bed, ion exclusion, pilot plant. The operating conditions for this performance were: feed flow at 14 l/h and at a temperature above 60 °C; water flow at 63 l/h and at a temperature above 65 °C; extract flow at 21 l/h; raffinate flow at 56 l/h; loop flow at 78 l/h and step time at 1326 seconds. This relates to the following bed volumes of the various separation zones: Bed Volume Zone 1 = 0.694; Bed Volume Zone 2 = 0.591; Bed Volume Zone 3 = 0.661; Bed Volume Zone 4 = 0.383. There is a trade-off between purity and recovery and a reduction in water usage. A preliminary environmental impact assessment and conceptual mass balance were done. The proposed plant integrates well into the existing Komati Mill of TSB and does not pose any significant environmental threat. The plant requires certain services from the mill. The mass balance investigated the water and steam consumption of the plant. Process integration was done so as to obtain the optimum utility consumption. The utility consumption of the plant does not exceed the capacity available at the mill. A small boiler is however required to produce steam during the annual mill maintenance period. Various techniques were used in a cost estimation for the invert sugar plant. The internal rate of return (IRR) is 42% for a fixed capital investment of R94,270,000.00. The net return rate (NRR) for the project is 4%/year, the net present value (NPV) - discounted at a 30% cost-of-capital is R41,782,000.00. The net payout time (NPT) is 5.207 years. The project fulfils the financial requirements set by TSB. It is now possible and viable to desugarize cane molasses.

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12

Hostetter, Christina J. „Sugar allies how Hershey and Coca-Cola used government contracts and sugar exemptions to elude sugar rationing regulations /“. College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/235.

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Thesis (M.A.) -- University of Maryland, College Park, 2004.
Thesis research directed by: Dept. of History. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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13

Fairbanks, Antony J. „Sugar lactones in synthesis“. Thesis, University of Oxford, 1993. http://ora.ox.ac.uk/objects/uuid:44329487-5d08-4df4-8baf-fc682d4bc9cc.

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This thesis describes the synthesis of some novel carbohydrate lactones and their uses as starting materials in (a) the syntheses of various polyfunctionalised cyclopentanes, via intramolecular aldol condensations, (b) the synthesis of 1-epihydantocidin, in which the crucial synthetic step involves a novel transformation induced by tetra-n-propylammonium perruthenate, and (c) the syntheses of various tetrahydrofurans and tetrahydropyrans. The syntheses of 3,4-O-isopropylidene and cyclohexylidene altrono and allono-1,5-lactones via Kiliani ascension of protected forms of D-ribose are described. The stereochemistry of the major reaction product, which was identified as 2,3-O-isopropylidene-D-altrono-l,5-lactone was confirmed by X-ray diffraction. Introduction of azide and iodide at C-2 is achieved via silyl protection of C-6 and formation of the 2-O-triflates. Nucleophilic displacement with azide or iodide produces mixtures of C-2 epimers. Desilylation is readily achieved by treatment with acetic acid to yield azido and iodo alcohols. Attempted oxidation of C-6 to an aldehyde functionality, in an attempt to effect cyclopentane formation via intramolecular aldol condensation of C-2 onto C-6 failed. Treatment of altrono and allono azido alcohols with tetrapropylammonium perruthenate unexpectedly results in the formation of a [2.2.2.] bicyclic hemiaminal, whose structure was confirmed by X-ray diffraction. Conversion of the amine functionality to a urea is effected by treatment with potassium cyanate. Cyclisation of the urea functionality onto the lactone carbonyl and subsequent deprotection effects the synthesis of 1-epihydantocidin. Investigations into acid catalysed epimerisation of the spiro centre in both hydantocidin and 1-epihydantocidin are described. Potassium carbonate induced ring contraction of 6-O-silyl altrono- and allono- 1,5-lactone-2-O-triflates yields tetrahydrofurans, the stereochemistry of which is confirmed by conversion to symmetric materials. Intramolecular Mitsunobu cyclisation of OH-2 onto C-6 of altrono-1,5-lactones effects tetrahydropyran formation. Inversion of C-5 of the known 3,4:5,6-di-O-ispropylidene-D-glycero-D-galacto-heptono- 1,5-lactone is described. Confirmation of product stereochemistry is achieved by conversion to 2,3-O-isopropylidene-L-altrono-1,5-lactone. Introduction of iodide and azide at C-2 is achieved via the formation of the 2-O-triflate. Selective deprotection of the 5,6 isopropylidene and subsequent periodate cleavage yields aldehydo lactones which undergo potassium fluoride induced intramolecular aldol cyclisation, to yield bicyclic [2.2.1.] azido and iodo carbocycles. Sodium azide induced intramolecular aldol cyclisation of 5-azido-5-deoxy-3,4-O-isopropylidene-L-galacturono-2,6-lactone, which produces two [2.2.1.] bicyclic azido carbocycles, is described. The second azido carbocycle, which is found to be the major reaction product, readily undergoes a retro aldol reaction, resulting in the formation of a third azido carbocycle, the structure of which was confirmed by X-ray diffraction. Investigations into the equilibration of these three bicyclic [2.2.1.] azido carbocycles under the reaction conditions employed to effect their formation are described. Various ring opening reactions of the second and third materials, and their uses in the syntheses of a novel amino pentol, two novel tetrahydroxy cyclopentane spirohydantoins and two novel cyclopentane amino acids are described. The structure of the asymmetric amino acid was confirmed by X-ray diffraction. Under basic reaction conditions retro aldol equilibration is seen to compete effectively with ring opening.

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14

Grieve, Teresa Maria. „Sugar beet gene manipulation“. Thesis, De Montfort University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279572.

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15

Reutter, Sophia. „Arsenic in the Sugar“. Wittenberg University Honors Theses / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1617962150790269.

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16

Tombasco, Natalie. „Girl-Junk, Sugar-Funk“. Digital Commons @ Butler University, 2018. https://digitalcommons.butler.edu/grtheses/504.

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17

Thevenot, Tracy Lynn. „Aspects of sugar transport via the phosphoenolpyruvate sugar phosphotransferase system of streptococcus mutans /“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq23673.pdf.

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18

Lenze, Taylor Ann. „Student Sugar Dating: Sugar Babies' Perceptions of Their Decisions to Begin, Continue, or Desist“. Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1604742197983985.

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19

Shintaku, Alberto. „Obtenção de extrato proveniente do aproveitamento de residuo da industria sucroalcooleira, utilizando CO2 supercritico : parametros de processo e estimativa do custo de manufatura“. [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254913.

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Orientadores: Maria Angela de Almeida Meireles, Carlos Eduardo Vaz Rossell
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
Made available in DSpace on 2018-08-06T15:36:00Z (GMT). No. of bitstreams: 1 Shintaku_Alberto_M.pdf: 7098448 bytes, checksum: b538eba167ccbd49382fabb569cc75ee (MD5) Previous issue date: 2006
Resumo: Neste trabalho estimou-se o custo de obtenção de extratos de cera, por extração supercrítica, a partir do resíduo da industria de açúcar e álcool, a torta de filtro. Foram realizados ensaios para determinação das isotermas de rendimento global, as curvas globais de extração (cinéticas de extração) e a identificação da composição química dos extratos obtidos. Na determinação da isoterma de rendimento global foram estudadas as pressões no intervalo de 100 a 350 bar com variações de 50 bar para as temperaturas de 30 e 50 ºC inicialmente para a matéria prima A. A quantidade utilizada de matéria prima (matéria prima A) foi de 2,5 gramas e uma vazão de CO2 de 0,249 ± 0,002 kg/h. Todos os ensaios foram realizados em duplicata e o tempo de extração de 60 min.. Para obtenção das curvas globais de extração foram utilizadas matérias primas distintas provenientes de 3 regiões do estado de São Paulo (matérias primas A, B e C). A temperatura de 50 ºC foi escolhida inicialmente para a matéria prima A, com as pressões de 200 bar e 350 bar respectivamente. Em seguida foi utilizado o binômio: temperatura e pressão, de 60 ºC e 200 bar para a matéria prima A, B e C sendo a temperatura escolhida pela característica do extrato de alta viscosidade (sólido à temperatura ambiente). A quantidade de matéria prima utilizada em cada ensaio foi de 25 gramas, uma vazão de 0,249 ± 0,003 kg/h de CO2, que fornece uma relação de 15 kg de CO2/kg de matéria prima. O tempo de extração utilizado para cada ensaio foi de 360 minutos. A partir do rendimento de extração, do tempo de extração do período CER (Constant Extraction Rate) e das características físicas da matéria prima (densidade, porosidade, etc.), foi estimada a capacidade dos extratores tomando-se o cuidado de dimensionar um extrator compatível com a capacidade de extratores comerciais existentes. Esta estimativa de capacidade permitiu a obtenção do custo do produto, a partir de uma análise econômica. A análise de sensibilidade do custo de produção para variações no custo de investimento, custo de insumos, custo de energia, custo de mão de obra e rendimento de extração, mostrou que o mesmo é influenciado principalmente pela variação no custo de investimento e pela variação do rendimento de extração. O custo de produção do extrato de cera foi estimado em US$ 13.626,93/tonelada
Abstract: The purpose of this work was to determine the manufacturing cost for the wax extract obtained from residues of the sugar cane and ethanol industry (filter cake), using SFE (Supercritical Fluid Extraction). Experiments were accomplished to determine the global yield isotherms, the overall extraction curves (kinetic of extraction) and to identification chemical composition of the extracts. The global yield isotherms were determined at the pressures of 100, 150, 200, 250, 300 and 350 bar and temperatures of 50 ºC and 30 ºC The amount of raw material (raw material A) used in each trial was 2.5 grams and a CO2 flowrate of 0.249 ± 0.002 kg/h. The experiments were duplicated. In order to determine the overall extraction curves (OEC), distinct raw materials were used from three different regions of São Paulo State (raw materials A, B and C). The OEC for the raw material A was initially determined at 50 ºC, with 200 bar and 350 bar of pressure respectively. In spite of 50 ºC be chosen initially, the experiments were accomplished in the SFE (Supercritical Fluid Extraction) equipment at 60 ºC and 200 bar for the raw material A, B and C being the temperature chosen due to characteristics of extract high viscosity (solid state at the ambient or room temperature). A 25 grams raw material sample was used in each trial with an outflow of 0,249 ± 0,003 kg/h of CO2 (a relation of 15 kg of CO2/kg of raw material). The extractors capacity was estimated from the extraction yield, the extraction time of Constant Extraction Rate period (CER) and the physical characteristics of the raw material (density, porosity, etc.). Extractors sizing considered the compatibility with existent extractors commercial capacity. This capacity estimation allowed the attainment of the product cost, from an economic analysis where investment cost, equipment cost, cost of operating labor, cost of operating supplies, etc. have been determined, composing the total extraction cost. The cost sensitivity was analyzed for variations in the investment cost, cost of operating supplies, energy cost, cost of operating labor and extraction income, showing that the production cost is influenced mainly by the variation in the investment cost and by the variation of the extraction yield. The determined wax extract obtaining cost, with SFE technology, was US$ 13,626.93/ton except for taxes
Mestrado
Mestre em Engenharia de Alimentos

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Boettger, Cynthia M. „Sugar sensing in Spirodela punctata“. Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.25 Mb., 84 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1430758.

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21

Oritseje, Florence Remi. „Sugar secretion by Ricinus nectaries“. Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46480.

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22

Yi, Wang. „Sugar control of artemisinin production“. Worcester, Mass. : Worcester Polytechnic Institute, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042906-210543/.

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23

Rogers, Paul S. „Sugar lactones in organic synthesis“. Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425897.

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24

McGouran, Joanna. „Probing sugar-plant-soil signalling“. Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526091.

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25

Simone, Michela A. „Studies on branched sugar lactones“. Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497098.

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Lindvall, Charlotta. „I Mend It With Sugar“. Thesis, Konstfack, Ädellab/Metallformgivning, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-5188.

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I mend it with sugar Abstract "Gluttony" and "sloth" is the sugar addictions best friend, or could it be that the addiction comes out of a disturbed hormone production caused by the environment that surrounds us? Trying to understand my own sugar addiction I weave in my personal story into my artistic research around this subject. The sugar might be the cause of the pandemic obesity and that's why it has to bee brought up into the light from its darkness down the basement of the food giants that roles over the world economy. There might be no answer yet to the questions I ask myself but it is time that we all do what it takes to get closer to the answers, by questioning the nature of the food that we stuff our self full of, we all have a part of it, or do we? Have our brain already been kidnapped by the white gold that we're no longer capable to think clear? This is a subject that suits very well to be highlighted through body related art, such as jewellery and corpus. We use our body when we eat, our feelings is coming from the inside of our body, by looking at our body and how it acts we can easily see the signs of how we really feel it's just that we forgot to look, we forgot to listen to our body, maybe it's the sugar that has numb our bodies…

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27

Tangney, Martin. „Sugar transport in Bacillus licheniformis“. Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/798.

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28

Toulson, Edwin Robert. „Sugar beet quality measuring system“. Thesis, Anglia Ruskin University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407677.

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29

Gemmell, Natasha. „Diastereocontrolled modifications of sugar ketones“. Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342107.

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WANG, YI. „Sugar Control of Artemisinin Production“. Digital WPI, 2006. https://digitalcommons.wpi.edu/etd-theses/460.

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The role of sugars as regulatory signals has mainly focused on their effects on plant growth, development, gene expression, and metabolism. Little, however, is known about their role in controlling secondary metabolism. Previous work in our lab showed that sugars affect the production of the sesquiterpene antimalarial drug, artemisinin, in hairy roots of Artemisia annua. In this study, sugars alone or in combination with their analogues were used to investigate if sugars control artemisinin production in Artemisia annua seedlings. Compared to sucrose, a 200% increase in artemisinin by glucose was observed. When the glucose analog, 3-O-methylglucose, which is not phosphorylated effectively by hexokinase, was added with glucose, artemisinin production was dramatically decreased but hexokinase activity was significantly increased compared to glucose. In contrast, neither mannose, which can be phosphorylated by hexokinase, nor mannitol, which can not be transported into cells had any significant effect on artemisinin yield. When different ratios of fructose to glucose were added to seedlings, artemisinin yield was directly proportional to glucose concentration. Although addition of sucrose with glucose gave inconclusive results, sucrose analogues decreased artemisinin production compared to sucrose. These results suggested that both monosaccharide and disaccharide sugars may be acting as signal molecules thereby affecting the downstream production of artemisinin. Taken together, these experiments showed that sugars clearly affect terpenoid production, but that the mechanism of their effects appears to be complex.

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31

Thangevelo, Debashine. „Nice like sugar and spice“. Pretoria News Tonight, 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000734.

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32

Perry, V. J. „Slavery, sugar and the sublime“. Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/19501/.

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The study examines the relationship between eighteenth and early nineteenth century British visual culture and the wealth created from slave-trading, Caribbean sugar plantations and the colonial transatlantic trade. Influenced by Edward Said’s Culture and Imperialism - and drawing on the evidence of buildings, landscapes and archives - I demonstrate that imperial links were manifest not only, as Said argues, in British literature, but also explicit in the architecture, interiors and landscapes commissioned by Britain’s eighteenth century elite. But the visual connections between Britain and its maritime colonial empire were not just manifest in the design of individual buildings or landscape gardens. The growing prosperity of provincial ‘Atlantic’ ports such as Bristol, Liverpool, Lancaster, Whitehaven and Glasgow had a profound effect on Britain’s ‘cultural geography’ - a shift towards the Atlantic west that was manifest in new aesthetic attitude towards wild and untamed landscapes. The profits from colonial plantations helped transform the perception of remote, often agriculturally unproductive uplands of western Britain into places of aesthetic value. I show, for instance, how financial investments made by ‘Atlantic’ colonial planters and merchants in north Wales, Cumberland and Scotland were instrumental to the creation of ‘Snowdonia’, ‘The Lakes’ and ‘The Highlands’ as ‘scenic’ tourist destinations. The fashion for landscape tourism was not just confined to Britain. The celebration of uncultivated ‘Nature’ also became a means to dignify colonial exploration and travel. I investigate the significance of landscape theorists Edmund Burke’s and William Gilpin’s connections with the colonial Atlantic trade, the critical influence of absentee planters on the popularity of picturesque landscape tourism and discuss how landscape art was used to represent the Caribbean colonies at a time of growing anti-slavery sentiment in Britain.

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Armstrong, Florian Traci L., Heidi L. Keeling, Scottie Misner und Evelyn Whitmer. „Key Facts on Sugar Substitutes“. College of Agriculture, University of Arizona (Tucson, AZ), 2016. http://hdl.handle.net/10150/595021.

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3 pp.
Artificial sweeteners can help consumers cut down on calories and control weight, help to manage chronic conditions such as diabetes, and potentially prevent cavities. This publication explores the several different sugar substitutes approved by the USDA for consumer consumption.

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Kirichenko, E., und E. Belovol. „High-energy-density sugar biobattery“. Thesis, Sumy State University, 2014. http://essuir.sumdu.edu.ua/handle/123456789/45213.

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The rapidly growing demand for powering portable electronic devices is driving the development of better batteries with features such as enhanced energy-storage densities, high levels of safety, biodegradability and small environmental footprints. The lithium-ion battery is often the system of choice because it offers a high energy density, has a flexible and light-weight design and has a longer lifespan than comparable battery technologies. The widespread use of metal-catalysed batteries also raises many concerns, primarily related to safety, toxic metal pollution and the availability of costly, limited, irreplaceable or rare metal resources.

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Misner, Scottie, Carol Curtis und Evelyn Whitmer. „Sugar Substitutes - Are They Safe?“ College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2008. http://hdl.handle.net/10150/146461.

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36

Game, Stephen. „Sugar transport in Trypanosoma brucei“. Thesis, University of Bath, 1988. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383248.

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37

Dyer, Emily L. „Sugar Nine: A Creative thesis“. BYU ScholarsArchive, 2008. https://scholarsarchive.byu.edu/etd/1342.

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This collection of short stories explores the different ways women tolerate violence in exchange for some form of validation. The narratives focus on women and the reverberations of small moments which carry violent mass. While the violence occasionally includes physical elements, the collection is more concerned with the ways women accept emotional and psychological violence—specifically from men. Themes, motifs and symbols from the Clytie-Helios myth are threaded throughout the collection as well as a concern for space and touch, art and the creation of art, silence and voice. All of these elements involve control as the women characters in these stories struggle to resist their own objectification. A critical introduction which explains how form and language amplify story precedes the collection.

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Grogan, Kevin. „Cuba's Dance of the Millions examining the causes and consequences of violent price fluctuations in the sugar market between 1919 and 1920 /“. [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006301.

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39

Adenäuer, Marcel. „Modelling the European sugar sector incentives to supply sugar beets and analysis of reform options /“. [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=98017449X.

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40

Curtiss, Chase Camden. „The effects of sugar and sugar-free energy drinks on simple and choice reaction time“. Thesis, Wichita State University, 2008. http://hdl.handle.net/10057/2025.

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The aim of the present study was to determine differences in reaction time resulting from the ingestion of three caffeine containing beverages. Six low-caffeine consuming college students (25.2 + 7.0 years) were recruited to participate in this study. The participants were tested for simple and choice reaction time prior to consuming Red Bull Energy Drink, Sugar-free Energy Drink, Mountain Dew soft drink or no drink and 60 minutes following the consumption of the product. Participants participated in all four conditions and were tested over a two week period with at least 48 hours between sessions. The order of drink administration was randomly selected for each subject. Significant differences (p < 0.05) were found in choice reaction time for the Red Bull and Sugar-free Red Bull conditions, with no significant differences witnessed in the simple reaction time test. An improvement of 321.0 to 302.9 milliseconds and 335.4 to 303.0 milliseconds were found for Red Bull and Sugar-free Red Bull, respectively. The Mountain Dew soft drink (325.4 to 319.0 milliseconds) and the no drink condition (315.8 to 312.03) showed no significant improvements. These results suggest that caffeine and taurine have some combined effect on improvement of reaction time or high levels of glucose negatively affect the cognitive improvements of caffeine in non-fasted individuals. Further research is warranted to determine the exact interaction between caffeine, glucose and taurine.
Thesis (M.Ed.) - Wichita State University, College of Education, Dept. of Human Performance Studies
Includes bibliographical references (leaves 40-46).

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Selbmann, Stefanie [Verfasser]. „Influence of food additives on the crystallization of sugar : - case study: sugar body - / Stefanie Selbmann“. Aachen : Shaker, 2016. http://d-nb.info/1118258207/34.

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42

Pawellek, Ingrid [Verfasser], und Berthold [Akademischer Betreuer] Koletzko. „Sugar intake, sugar sources and associated factors in European children / Ingrid Pawellek ; Betreuer: Berthold Koletzko“. München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2019. http://d-nb.info/1182228119/34.

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43

Curtiss, Chase Camden Patterson Jeremy A. „The effects of sugar and sugar-free energy drinks on simple and choice reaction time“. A link to full text of this thesis in SOAR, 2008. http://hdl.handle.net/10057/2025.

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44

Wright, Kallia O. „Putting sugar diabetes on the table : evaluating "the sugar plays" as entertainment-education in Appalachia /“. View abstract, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3372401.

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45

Stanford, Lawrence John. „The Queensland raw sugar industry : government regulation and assistance /“. Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09ECM/09ecms785.pdf.

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46

Govinden, Noël. „Intercropping of sugar cane with maize“. Thesis, University of Ottawa (Canada), 1986. http://hdl.handle.net/10393/4994.

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47

Kristiansson, Helena. „Enhancing the promiscuity of sugar kinases“. Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.579758.

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Glycosides play a major part in the development of novel pharmaceuticals since the sugar ligands of natural products play important roles in, e.g., cell-wall synthesis. The use of phosphosugars in the pharmaceutical industry has been linked to anti-inflammatory and immunosuppressive drugs. Therefore it's of interest to be able to develop and manufacture unique glycosylated natural products and investigate their abilities as potential drugs. A technique called In Vitro Glycorandomization (IVG) has been developed for the production of novel varieties of the glycopeptide antibiotic vancomycin. IVG need a range of sugar-l-phosphates for the production of different NDP-sugars. An enzyme that can phosphorylate a wide range of sugar substrates at position 1 is of importance to simplify the technique. Two human enzymes, galactokinase and N-acetylgalactosamine kinase, were mutated at specific residues in their amino acid sequence in an attempt to increase the number of sugars each enzyme could phosphorylate. Galactokinase showed activity toward two sugars not including its natural substrate galactose: 2-deoxy-D-galactose and D-galactosamine-hydrochloride. The promiscuity of galactokinase was increased after mutating the tyrosine at position 379. The Y379W mutant was the most successful by phosphorylating seven of the nine sugars selected for this enzyme. Several N-acetylgalactosamine kinase mutants showed higher activity toward the natural substrate (N-acetylgalactosamine) but, overall, the wild type was the better enzyme for the three selected sugars for this enzyme. Since no structural changes were visible when performing homology modelling of the mutants it is suggested that the increase in promiscuity for galactokinase is due to a rearrangement of hydrogen bonds within the proteins. It was shown that the flexibility of the galactokinase enzymes declines when substrates are bound in the active site and the mutants became more rigid than the wild type. The mutants are, however, more flexible than the wild type before the substrates bind.

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48

Richardson-Ngwenya, Pamela. „The Ethical Geographies of Caribbean Sugar“. Thesis, University of Oxford, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519815.

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49

Hadingham, Sophie Anne. „Sugar-regulation of plant gene expression“. Thesis, University of East Anglia, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410132.

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50

Ladomenou, Kalliopi. „Podand-type receptors for sugar recognition“. Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250367.

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