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Dissertations / Theses on the topic 'Sodda soha'

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Published: 5 June 2025
Last updated: 2 August 2025

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1

Madima, Takalani. "Manufacturing of synthetic soda ash." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6307_1284397464.

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<p>The aim of the project was to study the manufacturing of synthetic soda ash (sodium carbonate, Na2CO3) on an industrial scale. Currently all Soda ash that is used in South Africa for manufacturing glass is imported at a high cost, and the company Nampak Wiegand Glass (South Africa) is investigating the possibility to locally manufacture synthetic soda ash. About 75% of soda ash is synthetically produced from either the Leblanc process, Solvay process, Modified Solvay (Dual) process or dry lime process. This study concentrated on the Solvay process on a laboratory scale for eventual input in
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2

Berti, Federica <1988&gt. "Soda Tax: favorevoli o contrari?" Master's Degree Thesis, Università Ca' Foscari Venezia, 2012. http://hdl.handle.net/10579/2142.

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Il dilagarsi dell’obesità è un problema avvertito sia dalle autorità dei Paesi Industrializzati, sia dei Paesi in via di Sviluppo, dove la percentuale di persone che soffrono di obesità è aumentata in modo esponenziale. Fattori diversi conducono ad aumenti di peso: stile di vita sedentario, fattori ereditari e anche fattori psicologici. Ogni anno problemi quali sovrappeso, obesità e patologie correlate comportano milioni di dollari in costi diretti (ospedalizzazione e cure mediche), e di costi indiretti, altrettanto onerosi, relativi alla qualità della vita, alla riduzione della capacità lavor
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3

Baumgarte, Susanne. "Microbial diversity of soda lake habitats." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968508480.

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4

Mwatha, Wanjiru Elizabeth. "Microbial ecology of Kenyan soda lakes." Thesis, University of Leicester, 1991. http://hdl.handle.net/2381/35400.

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A combination of geological, geographical and climatic conditions; favour the evolution of stable alkaline environments, such as the soda lakes of East African Rift Valley. These lakes are often saline as well as alkaline. Soda lakes are potentially the best sources of alkaliphilic microoganisms, but they are virtually unexplored. The few studies done indicate that soda lakes have very high primary productivity, due to the dense population of phototrophic microorganisms, either cyanobacteria or phototrophic eubacteria or both. Soda lakes are therefore, likely to support a large population of o
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Morita, Teruyuki. "Mapas cognitivos SODA ampliados: prescrição de um método para articular atitudes, comportamentos e seqüências cognitivas a mapas SODA." reponame:Repositório Institucional do FGV, 2013. http://hdl.handle.net/10438/10529.

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Gunes, Asli. "Synthesis Of Alinite Cement Using Soda Solid Waste." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612545/index.pdf.

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This study is dedicated to give a production route for a kind of low energy cement called alinite cement using the waste material of soda industry as the main raw material. Soda solid waste, clay and minor amount of iron ore were mixed with certain quantities and burned at six different burning temperatures of 1050, 1100, 1150, 1200, 1350, and 1450 &ordm<br>C. The resultant clinkers were investigated by mineralogical and chemical analysis. Mineralogical analyses were performed by X-Ray Diffraction (XRD) technique. XRD analyses revealed the formation of alinite phase in the clinkers. Chemical
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7

Owenson, Gerald G. "Obligately anaerobic alkaliphiles from Kenya soda lake sediments." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/29758.

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During the month of December 1992, an expedition was undertaken to collect anaerobic sediment samples from alkaline lakes of the East African Rift Valley to Kenya. During this expedition, eleven samples were collected from the four non-saline, northern lakes (Lake Bogoria, Lake Nakuru, Lake Elmenteita and Lake Sonachi). A further five samples were obtained from the hypersaline Lake Magadi. Utilising an array of media, the isolation of alkaliphilic, obligate anaerobes, representing one of the major undescribed constituents of the trophic network, was attempted. Extensive investigations into the
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8

Nichols, Gail 1953. "Technical and aesthetic investigations in soda glaze ceramics." Monash University, Gippsland Centre for Art and Design, 2001. http://arrow.monash.edu.au/hdl/1959.1/8684.

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9

VIANA, Kaline Melo de Souto. "Diafragmas de PEUAPM para aplicação no processo de produção eletrolítica de cloro-soda." Universidade Federal de Campina Grande, 2009. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1836.

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Submitted by Emanuel Varela Cardoso (emanuel.varela@ufcg.edu.br) on 2018-09-27T18:51:38Z No. of bitstreams: 1 KALINE MELO DE SOUTO VIANA – TESE (PPGEP) 2006.pdf: 3746935 bytes, checksum: 4a030ab6637f715855808519f3e7825e (MD5)<br>Made available in DSpace on 2018-09-27T18:51:38Z (GMT). No. of bitstreams: 1 KALINE MELO DE SOUTO VIANA – TESE (PPGEP) 2006.pdf: 3746935 bytes, checksum: 4a030ab6637f715855808519f3e7825e (MD5) Previous issue date: 2009-02-06<br>Para a avaliação de diafragmas alternativos ao de amianto para produção de cloro e soda cáustica a partir da eletrólise da salmoura, foi uti
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10

Aleessa, Alam Burhan. "Utilization Of Soda And Beer Wastes In Cementitious Systems." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610893/index.pdf.

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To maintain the sustainability of cement and concrete production, there is a trend to use wastes in their production. Soda waste, generated by soda ash production process, and beer waste, generated by beer filtration process, are two locally produced wastes in Turkey and many other countries. The nature of these wastes, mostly their fineness, makes them possible to be used in concrete production, especially as a viscosity modifying agent in the self consolidating type of concrete. In this study, the addition of soda and beer wastes to self consolidating mortar (SCM) and self consolidating conc
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11

Ford, A. G. P. "Evolutionary relationships of East African soda lake cichlid fish." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1471875/.

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This thesis examines the evolutionary relationships of the Alcolapia soda lake cichlid fishes of East Africa. The introduction presents background on the soda lakes in which the cichlids are found, the taxonomy and biology of the fishes, as well as the theoretical background to the study. Chapter two discusses the methods used in the thesis, addressing the benefits and limitations of each, as well as their suitability to the study in hand. Chapter three investigates the phylogenetics and phylogeography of soda lake cichlids sampled at several populations around the soda lakes and a single tran
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12

Carriedo, Lutzenkirchen A. A. "A policy analysis of the 2014 Mexican soda tax." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2018. http://researchonline.lshtm.ac.uk/4648204/.

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Introduction: Mexico’s prevalence of adult overweight and obesity is 72.5%, and 34.4% for school children. Mexico has one of the highest consumption of sugar-sweetened beverages globally. In 2012, during the transition to a new President, a new obesity strategy was proposed and developed. As part of this policy, a soda tax was implemented in Mexico in January 2014. The aim of this thesis is to explore how the soda tax emerged as a policy issue in Mexico and how stakeholders influenced its development and implementation. Methods: Thirty-three semi-structured elite interviews were conducted with
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13

Talimian, Ali. "Strengthening of Soda-Borosilicate Glasses by Ion Exchange Processes." Doctoral thesis, Università degli studi di Trento, 2017. https://hdl.handle.net/11572/368740.

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Flexible electronics and displays rely on strong thin borosilicate glasses. Furthermore, borosilicate glass play a vital role in pharmaceutical packaging, particularly for the container of liquid medicine in the auto-injectors. Because of the risk of failure due to the fracture of the glass ampule the costumers need to purchase several units of auto-injector; also, the injector price increases dramatically. This renewed the interest in the strengthening of soda-borosilicate glass. Moreover, the applications of strong thin borosilicate glasses in flexible electronics attracted attention. Chemic
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14

Talimian, Ali. "Strengthening of Soda-Borosilicate Glasses by Ion Exchange Processes." Doctoral thesis, University of Trento, 2017. http://eprints-phd.biblio.unitn.it/2016/1/Strengthening_of_sodaborosilicate_Talimian.pdf.

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Flexible electronics and displays rely on strong thin borosilicate glasses. Furthermore, borosilicate glass play a vital role in pharmaceutical packaging, particularly for the container of liquid medicine in the auto-injectors. Because of the risk of failure due to the fracture of the glass ampule the costumers need to purchase several units of auto-injector; also, the injector price increases dramatically. This renewed the interest in the strengthening of soda-borosilicate glass. Moreover, the applications of strong thin borosilicate glasses in flexible electronics attracted attention. Chemic
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15

Moriyama, Aline Tomie Poglitsch. "Estudo da influência de carga alcalina na polpação Soda com pré-hidrólise de eucalyptus urograndis para produção de etanol, lignina e furfural /." Guaratinguetá, 2019. http://hdl.handle.net/11449/181764.

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Orientador: Gustavo Ventorim<br>Resumo: O conceito de biorrefinaria surgiu do intuito de diminuir a dependência dos produtos oriundos do petróleo e seus consequentes problemas ambientais. Pesquisas buscam técnicas e materiais que substituam a matéria prima de origem fóssil por biomassa, agregando valor a produtos de origem renovável ou que anteriormente seriam descartados. A produção de combustíveis de 2ª geração (como bioetanol) possibilita o repasse de um custo razoável ao setor de transporte devido ao uso de matéria prima de baixo custo. A composição de forte associação entre celulose, hemi
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16

Dassoler, Karine. "Farelo de trigo como matéria-prima para produção de papel." Universidade Estadual do Oeste do Paraná, 2017. http://tede.unioeste.br/handle/tede/3290.

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Submitted by Neusa Fagundes (neusa.fagundes@unioeste.br) on 2018-02-08T19:10:01Z No. of bitstreams: 1 Karine_Dassoler2017.pdf: 1003941 bytes, checksum: f29baeb8bacac3432cb09c39d7db0b18 (MD5)<br>Made available in DSpace on 2018-02-08T19:10:01Z (GMT). No. of bitstreams: 1 Karine_Dassoler2017.pdf: 1003941 bytes, checksum: f29baeb8bacac3432cb09c39d7db0b18 (MD5) Previous issue date: 2017-07-13<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES<br>Paper is an extremely versatile material that, by possessing chemical, physical and mechanical unique properties, can have several a
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17

Borode, J. O. "Dephosphorization of molten pig iron at 1400deg.C using soda slags." Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372115.

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18

Oliveira, Marcos Ronaldo Ramos de. "Correntes de despolarização termicamente estimuladas: topázio e vidros soda-lime." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-19032014-113422/.

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Esta dissertação poderia ser dividida em duas partes, sem que houvesse prejuízo para o seu entedimento: uma tratando do topázio natural (Al IND.2 SiO IND.4[F, OH] IND.2) e outra, a respeito dos vidros silicatos tipo soda-lime (SiO IND.2+CaO+Na IND.2 O). Em ambas se procura contribuir para o estudo de defeitos com algumas técnicas experimentais, mais enfaticamente as correntes de despolarização termicamente estimuladas (CDTE). Com relação ao topázio, há diversos estudos tratando de sua termoluminescência (TL) e de possíveis aplicações no que tange ao seu emprego como dosímetro termoluminescent
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19

Aburto, Celis. "Soda Stereo en Chile: cronología de un fenómeno socio-musical." Tesis, Universidad de Chile, 2000. http://repositorio.uchile.cl/handle/2250/144926.

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Memoria académica para optar al título de Periodista<br>El fenómeno del rock latino representa un hito excepcional dentro de los anales de la música contemporánea. Desde principios de la década de los ’80 y en medio de las dictaduras militares de Argentina y Chile se albergó un prolífico movimiento musical que rápidamente se extendió por el resto del continente. Si bien es cierto, en ambos países el proceso tiene características muy similares, es posible establecer como uno de los puntos primigenios, la censura impuesta en Argentina para la difusión de música en inglés debido a
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20

Bob, Mustafa M. "Enhanced removal of natural organic matter during lime-soda softening." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1047486107.

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Thesis (Ph. D)--Ohio State University, 2002.<br>Title from first page of PDF file. Document formatted into pages; contains xxii, 119 p.: ill. Includes abstract and vita. Advisor: Harold W. Walker, Civil Engineering Program. Includes bibliographical references (p. 115-119).
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21

Burton, Peter. "A polarographic study of lignin reactions in soda pulping liquors." Thesis, Federation University Australia, 1986. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/97266.

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Oxidation-reduction reactions between carbohydrates, lignin and quinone additives in Pinus radiata soda pulping liquors have been investigated. A reduction peak at -0.72 V (Vs SCE) was observed using differential pulse polarography when Pinus radiata wood is heated in alkaline solution in the presence of oxygen, and has been shown to result from the oxidation of lignin structures. The results of this study indicate that the electroactive species present in Pinus radiata soda pulping liquors is an oxidation product, resulting from the formation of phenoxy radicals and /or quinone methides. Alth
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Pizzutti, Dena. "The Impact of a Soda Tax on Aggregate Consumer Behavior." Diss., Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/596509.

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Business Administration/Interdisciplinary<br>D.B.A.<br>In January of 2017, Philadelphia became the second American jurisdiction to implement a targeted “soda tax”, which added a new tax of 1.5 cents per ounce to sweetened beverages. Revenue from the tax was intended to be used for pre-k education and the rebuilding of parks and recreation centers (Terruso, 2017). As obesity in the United States and around the world continues to be of concern, leaders from across disciplines will be looking to find out if and how consumers change behavior as a result of such taxes. Many communities across the U
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23

Bedell, Paul M. "The behaviour of a soda ash tailing in electro-kinetic treatment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28539.pdf.

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BaOsman, Ahmed Abdullah. "The kinetics and mechanism of wheat straw pulping with caustic soda." Thesis, University of York, 1996. http://etheses.whiterose.ac.uk/10855/.

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25

CUNHA, Carlos Thiago Cândido. "Desenvolvimento de diafragmas poliméricos aplicáveis na produção eletrolítica de cloro-soda." Universidade Federal de Campina Grande, 2015. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1116.

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Submitted by Maria Medeiros (maria.dilva1@ufcg.edu.br) on 2018-07-06T13:50:36Z No. of bitstreams: 1 CARLOS THIAGO CÂNDIDO CUNHA - TESE (PPGCEMat) 2015.pdf: 3145702 bytes, checksum: bad9f1c620f682b0e77a37c797d9bc37 (MD5)<br>Made available in DSpace on 2018-07-06T13:50:36Z (GMT). No. of bitstreams: 1 CARLOS THIAGO CÂNDIDO CUNHA - TESE (PPGCEMat) 2015.pdf: 3145702 bytes, checksum: bad9f1c620f682b0e77a37c797d9bc37 (MD5) Previous issue date: 2015-06-22<br>Capes<br>O hidróxido de sódio (NaOH) e o cloro estão entres os produtos químicos mais importantes na indústria e são produzidos simultaneam
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Bacha, Marcelo Gomes. "Sinterização de vidro soda-cal-sílica comercial assistida por campo elétrico." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-17082017-111528/.

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Métodos de produção eficientes que economizam tempo e energia são sempre exigidos e novos processos de sinterização de baixo custo têm sido desenvolvidos para materiais cerâmicos e implementados por empresas e pesquisadores em todo o mundo. Com este objetivo, uma nova abordagem conhecida como Flash Sintering está atraindo grande interesse. Esta nova técnica de sinterização envolve a aplicação de campo elétrico através de uma amostra durante o aquecimento, gerando assim aceleração abrupta da cinética de densificação, diminuindo o tempo de sinterização de horas para segundos e diminuindo o aquec
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27

Hoffmann, Debra A. "The Effects of Message Framing on Soda Consumption in Young Adults." Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1510591003418607.

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28

Masemola, Patricia Mmoniemang. "The nature and control of organic compounds in soda ash evaporate production." Thesis, Rhodes University, 2000. http://eprints.ru.ac.za/2312/1/MASEMOLA-MSc-TR00-55.pdf.

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Solar evaporite systems are man-managed ecosystems which are highly vulnerable to biological,physical and chemical disturbances. The problems encountered in such systems are in many cases found to be associated with the microbial ecology and the design of the system. This project focussed on investigating the nature of organic compounds contaminating soda ash produced at a solar evaporite production system located at Sua Pan in Botswana. Several years after the plant was commissioned, problems, including accumulation of total organic carbon (TOC) and discolouration of the soda ash product were
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Kent, Tyler. "Comparing Deformation at Soda Lake Geothermal Field from GPS and 3D Seismic." Thesis, University of Nevada, Reno, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1540191.

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<p> The transition between the two distinct structural regimes of the Walker Lane and the Basin and Range allows for complex transtensional fault interactions. The Carson Sink is the surface expression of the interaction of shear and extensional strains that cause both crustal extension and block rotation. This study investigates this tectonic shift at the Soda Lake geothermal field by comparing the direction and rate of deformation from both regional GPS and a 34 sq km 3D seismic survey. The GPS stations in the region estimate the strain field by comparing tensor solutions that show changing
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Luganova-Chnyrenkova, Tatiana. "Factors affecting behaviour of minor elements in dore metal-soda slag partitioning." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=26404.

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A series of experiments determined the influence of oxygen partial pressure and SiO$ sb2$ content in soda slag on the distribution of metals between soda slag and dore metal. Oxygen partial pressure ranged from 10$ sp{-8}$ to one atmosphere and the SiO$ sb2$ content from 0 to 10 wt%.<br>Minor elements, including the precious metals, partition between the dore metal and the soda slag. The main purpose of this research was to determine the process parameters which influence this distribution, and the nature and forms of the precious metals in the metal and in the slag phases.<br>From the results
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Assmann, André. "TENSÕES RESIDUAIS AO REDOR DE INDENTAÇÕES EM VIDROS SODA-CAL E BOROSSILICATO." Universidade Estadual de Ponta Grossa, 2018. http://tede2.uepg.br/jspui/handle/prefix/2710.

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Tarvornpanich, Tarnkamol. "Recycled colourless soda-lime-silica glass as an alternative flux in whitewares." Thesis, University of Sheffield, 2007. http://etheses.whiterose.ac.uk/14505/.

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The most common type of container glass which is landfilled in the UK is soda-limesilica glass, comprising typically 7I-75wt% silica, 12-I6wt% soda and 1O-15wt% lime. Considering its chemical similarity to that of the fluxing materials commonly used in whiteware bodies, it is sensible to investigate the use of SLS waste glass as replacement for these fluxes in whitewares. The present study aimed at the incorporation of colourless SLS waste glass into a standard whiteware formulation (Le. 50wt% kaolinite clay, 25wt% quartz and 25wt% nepheline syenite) as a flux, and at the examination of the mi
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Cavalcante, Renata Andrade Kobayashi. "Estudo do efeito de compostos de selênio em vidros soda-cal-sílica." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-09072014-115609/.

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O selênio é utilizado como elemento colorante ou descolorante na indústria vidreira. Sua característica altamente volátil durante a fusão do vidro, com perdas de até 80%, tem sido uma questão discutida já há muito tempo. Assim, alternativas têm sido buscadas na tentativa de aumentar o rendimento do selênio. Utilizar o princípio da microencapsulação do selênio através da obtenção de vidros pelo método sol-gel apresenta-se como uma possibilidade para novos estudos. O método sol-gel permite obter vidros de alta pureza utilizando recursos mais simples que em uma fusão convencional. Este trabalho a
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34

Kim, Dong-Sang. "Batch expansion and foaming during melting of soda-lime-silica glass batches." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1056055629.

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Guan, Qing. "Sodium diffusion in soda-lime-silicate glass around the glass transition temperature /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487687115926219.

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36

Marcondes, Camila Juliane. "Biorrefinaria para produção de furfural, lignina e etanol através da polpação soda com pré-hidrólise da madeira de eucalipto urograndis /." Guaratinguetá, 2019. http://hdl.handle.net/11449/181840.

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Orientador: Gustavo Ventorim<br>Resumo: O setor de combustíveis líquidos tem passado por uma constante mudança no cenário econômico mundial. Com a previsão de esgotamento das fontes de combustíveis fósseis, a corrida por novas alternativas se tornou um marco das gerações passadas e futuras. O denominado etanol celulósico produzido através da biomassa pode ser a chave para a questão energética mundial, no entanto, este tipo de produto encontra como barreira o desenvolvimento de tecnologias mais acessíveis e a custos menores. Dentre os materiais utilizados, a madeira pode apresentar vantagens co
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Orgul, Sibel. "Ph.d." Thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/663526/index.pdf.

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This study was carried out with Beypazari trona ore having a grade about 85 % trona (Na2CO3.NaHCO3.2H2O). The main target of the study is the determination of calcinations and leaching parameters, which are the two main unit operations in the production of soda ash (Na2CO3) from trona ore. Calcination parameters<br>calcination duration, calcination temperature and particle size were determined by using three different heat treatment systems, namely laboratory type muffle furnace, up draught furnace and microwave oven. As an alternative, wet type microwave-induced calcination which completes th
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38

Chaves, Maria Francisca Vieira de Castro Sousa. "Melhoria energética do sector de soda leve conforme a nova metodologia manufacturing excellence solvay Portugal." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8058.

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Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica<br>Com base na metodologia desenvolvida pelo projeto Solwatt, realizou-se uma melhoria energética do secador de soda leve na unidade de produção de carbonato de sódio do complexo industrial da Solvay em Portugal, de forma a determinar as parcelas que representam o maior impacto no consumo energético total deste equipamento, em 2011. Concluído o balanço energético, verificou-se que o sobreaquecimento dos produtos da reação de calcinação e da humidade no bicarbonato de sódio e, ainda, o aquecimento da humidade no bic
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39

Kihlman, Martin. "Dissolvingmassa baserat på soda-AQ kokning : Potential för ökat förädlingsvärde av svensk skogsråvara." Thesis, Karlstad University, Faculty of Technology and Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4695.

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<p>Detta examensarbete genomfördes från begäran av två företag, Pöyry Sweden AB, Karlstad och Kiram AB. Arbetet var uppdelat i två delar, en litteraturstudie samt en experimentell del. I litteraturstudien kartlades olika processer för framställning av dissolvingmassa och olika processer för beredning av viskosfiber. Utöver det sammanställdes även några av de ledande aktörerna av joniska vätskor samt applikationer för cellulosabaserade produkter. Fokus genom hela arbetet har legat på svavelfria processer som t.ex. användandet av joniska vätskor för upplösning av cellulosa. I den experimentella
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40

Fernández, Miguel Angel Vera. "Avaliação dos processos de polpação soda-antraquinona e bissulfito-base magnésio para bambu." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-03082010-084832/.

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O presente estudo teve como objetivo avaliar e comparar os processos de polpação sodaantraquinona e bissulfito base magnésio para Bambusa vulgaris Schrad. com 2 anos de idade oriundos de plantios comerciais no Maranhão Brasil visando a produção de polpa celulósica branqueável e não branqueável (números kappa 30±2 e 50±2 respectivamente). A matéria-prima foi caracterizada com relação à densidade básica, composição química e dimensões de fibras; para aos processos de polpação avaliou-se o tempo total de cozimento, o fator H, o rendimento bruto, rendimento depurado, teor de rejeitos, carga de re
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41

Robinet, Laurianne. "The role of organic pollutants in the alteration of historic soda silicate glasses." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/1475.

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The stability of glass is linked to its composition and the atmosphere controls its alteration. The organic pollutants emitted by wooden showcases play a role in the alteration of historic glasses. This study examines the effects of acetic acid, formic acid and formaldehyde on objects from the National Museums of Scotland and on replica glasses aged artificially, all with a soda silicate composition. Composition was determined by electron microprobe and analytical decomposition of the Raman spectra was used to establish correlations between glass structure and composition. This allowed interpr
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42

Ficicilar, Berker. "Carbon Dioxide Removal In Steam Reforming: Adsorption Of Co2 Onto Hydrotalcite And Activated Soda." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605346/index.pdf.

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Conversion of natural gas and other light hydrocarbons via steam reforming is currently the major process for hydrogen production. However, conventional hydrogen production technologies are not cost effective and therefore, cost is the biggest impediment to use hydrogen in fuel cell applications. In order to optimize and overcome cost problems in hydrogen production, sorption and membrane enhanced reaction processes are the two novel technologies for in situ operation of reforming and removal of carbon dioxide. Adsorption of carbon dioxide onto activated hydrotalcite and activated soda, obtai
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43

Perelson, Stephen. "SoDA : a model for the administration of separation of duty requirements in workflow systems." Thesis, Port Elizabeth Technikon, 2001. http://hdl.handle.net/10948/68.

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The increasing reliance on information technology to support business processes has emphasised the need for information security mechanisms. This, however, has resulted in an ever-increasing workload in terms of security administration. Security administration encompasses the activity of ensuring the correct enforcement of access control within an organisation. Access rights and their allocation are dictated by the security policies within an organisation. As such, security administration can be seen as a policybased approach. Policy-based approaches promise to lighten the workload of security
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44

Kilinc, Erhan. "Mechanical and structural properties of soda lime silica glasses as a function of composition." Thesis, University of Sheffield, 2016. http://etheses.whiterose.ac.uk/13616/.

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Significant changes in mechanical and structural properties can be obtained by modifying commercial soda-lime-silica glass composition within a narrow range; and this can potentially enable the glass scientists and technologists to produce commercially viable, stronger and lighter soda-lime-silica glass products. In this research, four different series of soda-lime-silica glasses have been produced; MgO and CaO glass series are fabricated by varying the magnesia/silica and calcia/silica ratios respectively; and CaO-MgO and Al2O3 glass series were produced by altering the calcia/magnesia and (a
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45

Escanhoela, Júnior Carlos Augusto [UNESP]. "Condutividade elétrica e polarização térmica de vidros soda-cal-sílica contendo diferentes cátions tetravalentes." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/91918.

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Made available in DSpace on 2014-06-11T19:25:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-02-17Bitstream added on 2014-06-13T19:12:21Z : No. of bitstreams: 1 escanhoelajunior_ca_me_rcla.pdf: 2205069 bytes, checksum: 07cd01b4a104f262986c24bd2a7f874b (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Neste trabalho realizamos a polarização térmica em vidros silicatos com composição (%mol) 22Na2O.8CaO.65SiO2 .5MO2 (M = Si, Ti, Ge, Zr, Sn e Ce). A polarização térmica consiste em aplicar um campo elétrico DC de elevada intensidade (~1 MV/m) em amostras a altas
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46

Karakus, Saffet. "Physical, chemical, soda pulping and papermaking properties of Kenaf as a function of growth." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ41002.pdf.

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47

Soda, Marcello [Verfasser], and Josef [Akademischer Betreuer] Zweck. "Structural and morphological TEM characterization of GaAs based nanowires / Marcello Soda. Betreuer: Josef Zweck." Regensburg : Universitätsbibliothek Regensburg, 2012. http://d-nb.info/1028958684/34.

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48

Hickman, Ian. "Chromium segregation and its effect on crystallisation processes in green soda-lime-silica glass." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.505561.

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49

Volotinen, Tarja T. "Mathematical description of absorbance spectra for Fe and Cu doped soda-lime-silica glasses." Thesis, University of Sheffield, 2007. http://etheses.whiterose.ac.uk/6086/.

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Absorbance spectra and colour for a coloured soda-lime-silica glass can be predicted from colorant concentrations and melting conditions; and conversely: the concentrations for each colorant ion, valence and site (octahedral, tetrahedral) can be "measured" from an absorbance spectrum. The necessary accurate mathematical descriptions for the absorbance spectra of the two most common colorants and contaminants, Cu and Fe, have been developed over the wavenumber range extending from UV to Near IR (200 - 3300 nm) in a soda-lime-silica (NCS) glass, singly or doubly doped with Cu and Fe. The effect
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50

Baesso, Mauro Luciano. "Influência dos metais de transição em vidros de aluminato de cálcio e soda-lime." [s.n.], 1987. http://repositorio.unicamp.br/jspui/handle/REPOSIP/277190.

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Orientador: Zoraide Primerano Arguello<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Fisica Gleb Wataghin<br>Made available in DSpace on 2018-07-14T03:14:55Z (GMT). No. of bitstreams: 1 Baesso_MauroLuciano_M.pdf: 1705616 bytes, checksum: 74cc998ae142f41654e665105893b6ff (MD5) Previous issue date: 1987<br>Resumo: Este trabalho apresenta um estudo da influência de ions de metais de transição em vidros de soda-lime e de aluminato de cálcio. Como conseqüência, além de algum entendimento sobre o mecanismo físico dessas absorções seletivas no visível, o trabalho l
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