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Rozprawy doktorskie na temat „Alkaloid content”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Grue, Margaret Ruth. "A study of the alkaloid content of the Senecio speciosus/Macrocephalus complex." Thesis, Rhodes University, 1992. http://hdl.handle.net/10962/d1005027.

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The isolation and identification of pyrrolizidine alkaloids from various plant species from 1988 to May 1991 are reviewed and the alkaloids of two indigenous plant species, Senecio speciosus Willd and Senecio macrocephalus DC, were investigated. A brief review of the methods used for isolation and identification of pyrrolizidines is also given. S. speciosus was found to contain two new alkaloids, 7-senecioyl-9-sarracinylheliotridine and 7-isosarracinyl-9- sarracinyl-heliotridine, which were identified using highfield NMR techniques. A number of other alkaloids were tentatively identified using

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Fung, Christine Louise. "The alkaloidal content of A. napellus L. (Aconitum)." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297087.

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Wolf, Jean-Pierre. "Synthese und Strukturaufklärung optisch aktiver Alkaloide aus Catha edulis Forsk /." [S.l : s.n.], 1987. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Radi, Peter. "Laserspektroskopie von homo- und heteronuklearen Alkali-Trimeren /." [S.l : s.n.], 1986. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Halaweh, Mahmoud. "Effect of alkalis and sulfates on Portland cement systems." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0002120.

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Sarmah, Ajit K. "Persistence and mobility of triasulfuron, metsulfuronmethyl, and chlorsulfuron in alkaline soils." Title page, abstract and contents only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phs2461.pdf.

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Bibliography: leaves 157-174. This study examined the fate of three common sulfonylurea herbicides in highly alkaline soils through a series of laboratory and field experiments to determine if existing leaching models could be used to describe their field behaviour under Australian climatic conditions. A liquid chromatographic method was developed to simultaneously determine levels of triasulfuron, metsulfuronmethyl, and chlorsulfuron in soil and water. The investigation of base hydrolysis for the herbicides in aqueous buffer and soil solutions determined that it was unlikely to be a major los

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Elgayar, Iman. "The influence of alkali metal content and network connectivity on bioactive glasses." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415447.

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Mattle, Daniel. "Preventive treatment of nephrolithiasis with alkali citrate : a critical review /." Bern : [s.n.], 2005. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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9

Goshayeshi, Niloufar. "Contribution to the Development of Analytical Models to Forecast Alkali-Aggregate Reaction (AAR) Kinetics and Induced Expansion." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39553.

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Alkali-aggregate reaction (AAR) is one of the most harmful distress mechanisms affecting the durability and serviceability of concrete infrastructure worldwide. Currently, there is a need to forecast future behaviour of AAR-affected concrete, and thus analytical and numerical models have been developed over the years. Larive developed a model in 1998 that is able to describe the behaviour of concrete samples in the laboratory. This model has been widely accepted and used by AAR community, even to predict the behaviour of concrete structures in the field. Larive’s model is based upon three main

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10

Whitfield, Troy T. "Effect of Tricalcium Silicate Content on Expansion in Internal Sulfate Attack." Scholar Commons, 2006. http://scholarcommons.usf.edu/etd/3802.

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The purpose of this study was to determine the cementitious parameters and placement temperature that impact internal sulfate attack in concrete. Concrete structures make up a large percentage of the infrastructure and multifamily housing. Durability is very important. Cements can be formulated to reduce the impact of external environmental exposure such as high salinity from marine environments or high sulfate levels from soils or surface waters. Concrete is also subject to internal attack such as alkali aggregate reaction, (AAR), and delayed ettringite formation, (DEF). This study focused on

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11

Chakar, Fadi S. "Fundamental delignification chemistry of laccase-mediator systems on high-lignin-content kraft pulps." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/7017.

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Boddy, Andrea M. "The effect of product form and silica content of silica fume on its ability to control alkali-silica reaction." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0028/MQ50329.pdf.

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13

Hellström, Sara. "Viscose production : Impact from alkali resistance (R18) and hemicellulose content in dissolving cellulose on the processability and quality of viscose." Thesis, Umeå universitet, Kemiska institutionen, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-55055.

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In this study the influence of variations in alkali resistance (R18) of cellulose on the quality of the viscose product in terms of carbohydrate content have been examined. The dissolution pattern of hemicellulose in the first steps of the viscose process with different running parameters has been determined. Furthermore the correlation between R18 and hemicellulose content has been studied. Mercerization and pressing was performed in a viscose micro plant at MoRe Research with varying process settings using samples with different R18 and known carbohydrate content. The carbohydrate content wa

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14

Fotovat, Amir. "Chemistry of indigenous Zn and Cu in the soil-water system : alkaline sodic and acidic soils." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phf761.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 195-230. In this study the soil aqueous phase chemistry of Zn and Cu in alkaline sodic soils are investigated. The chemistry of trace metal ions at indigenous concentrations in alkaline sodic soils are reported. Metal ions at low concentrations are measured by the graphite furnace atomic absorption spectrometry (GFAAS) technique.

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15

De, Abreu Mafalda Jorge Alexandre. "Advanced rear contact design for CIGS solar cells." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257846.

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The current trend concerning the thinning of solar cell devices is mainly motivated by economic aspects, such as the cost of the used rare-earth elements, and by the requirements of emergent technologies. The introduction of ultra-thin absorber layers results in a reduction of used materials and thus contributes to a more cost-effective and time-efficient production process.However, the use of absorber layers with thicknesses below 500nm gives rise to multiple apprehensions, including concerns regarding light management and the absorber’s quality.Therefore, this experimental work presents a no

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16

Tiossi, Renata Fabiane Jorge. "Obtenção de extrato padronizado de Solanum lycicarpum A. St.-Hil. contendo glicoalcalóides, desenvolvimento de método analítico por CLAE e de forma farmacêutica de uso tópico." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/60/60138/tde-16112010-202039/.

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Solanum lycocarpum A. St.-Hil. (Solanaceae Solanum), popular lobeira, é espécie arbustiva nativa e característica do Cerrado brasileiro. Seus frutos são empregados na medicina caseira como diurética, calmante, anti-espasmódica, antiofídica e antiepilética. As espécies do gênero Solanum são produtoras de heterosídeos alcaloídicos, os quais possuem atividade antitumoral, incluindo-se anticâncer de pele. O câncer de pele tem preocupado as autoridades no mundo com os crescentes índices atuais e, por esse motivo, a busca por novos ativos anticâncer é primordial. Dos frutos da lobeira, pode-se prod

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17

Paudel, Shree Raj. "Pore Structure and Pore Solution in Alkali Activated Fly Ash Geopolymer Concrete and Its Effect on ASR of Aggregates with Wide Silicate Contents." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/31687.

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Alkali silica reaction (ASR) is detrimental to concrete. It is a time-dependent phenomenon, which can lead to strength loss, cracking, volume expansion, and premature failure of concrete structures. In essence, it is a particular chemical reaction involving alkali hydroxides and reactive form of silica present within the concrete mix. Geopolymer is a type of alkaline activated binder synthesized through polycondensation reaction of geopolymeric precursor and alkali polysilicates. In this thesis, three types of reactive aggregates with different chemical compositions were used. Systematic labor

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18

Tavares, Pedro Américo Curvelo. "Influência do teor de álcalis do cimento na interacção cimento-adjuvante." Master's thesis, Universidade de Évora, 2011. http://hdl.handle.net/10174/11517.

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Nas últimas décadas tem-se assistido a um enorme avanço na área de estudo dos betões, no desenvolvimento de betões com características e propriedades específicas, tais como os betões de alta performance, betões auto compactantes, etc. Para o desenvolvimento destes betões otimizados, caracterizados por apresentarem muito baixa razão água cimento (A/C), os adjuvantes orgânicos, mais concretamente os superplastificantes, têm possuído uma posição de destaque devido á sua capacidade otimizar as propriedades dos betões. Nesta dissertação foi elaborado um plano de ensaios caracterizadores da influênc

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Yi, Tian. "In vivo study of the early bone-bonding ability of Ti meshes formed with calcium titanate via chemical treatments." Kyoto University, 2016. http://hdl.handle.net/2433/215392.

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Final publication is available at http://link.springer.com/article/10.1007%2Fs10856-015-5612-2<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(医学)<br>甲第19566号<br>医博第4073号<br>新制||医||1013(附属図書館)<br>32602<br>京都大学大学院医学研究科医学専攻<br>(主査)教授安達泰治, 教授戸口田淳也, 教授鈴木茂彦<br>学位規則第4条第1項該当

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20

Mhlanga, Musa. "Magmatic-petrogenetic & structural relationships of the Peninsula Granite of the Cape Granite Suite (CGS) with the Malmesbury Group, Sea Point contact, Saldania Belt, South Africa." University of the Western Cape, 2020. http://hdl.handle.net/11394/8034.

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>Magister Scientiae - MSc<br>The Sea Point contact, Cape Town, South Africa, exposes the contact between the Neoproterozoic Malmesbury Group metasedimentary rocks of the Pan-African Saldania belt and the intrusive S-type Peninsula Granite of the Neoproterozoic-Paleozoic Cape Granite Suite (CGS). The exposure outcrops over an area of approximately 170 m × 60 m with the northern end of the exposure being characterized by the country rock–microgranite intrusive contact. Heading further south, the outcrop transitions to the main contact zone, which is a predominantly gradational zone marked by sh

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21

Sassi, Mouna. "Réactivité à haute température de l’hexa-aluminate de calcium au contact des cendres de biomasse." Thesis, Orléans, 2019. http://www.theses.fr/2019ORLE3101.

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La corrosion à haute température par les alcalins (sels ou oxydes de sodium et/ou de potassium à l'état solide, liquide et en état vapeur) et les oxydes liquides (laitiers) est un problème sérieux qui affecte la vie des matériaux réfractaires utilisés dans les installations d'incinération de déchets. Afin de contribuer à une meilleure connaissance de cette attaque, une étude en laboratoire a été réalisée pour étudier la corrosion alcaline de différentes matières premières : chamotte d’argile, andalousite, andalousite mullitisée, mullite, zircone mullite, bauxite, corindon blanc, alumine-β et c

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22

Kim, Byung-Gi. "Compatibilité entre les ciments et les superplastifiants dans les bétons à haute performance : influence de la teneur en alcalis du ciment et de la masse molaire du PNS sur les propriétés rhéologiques des pâtes de ciment et des bétons Compatibility between cements and superplasticizers in high-performance concrete : influence of alkali content in cement and of the molecular weight of PNS on the properties of cement pastes and concretes." Sherbrooke : Université de Sherbrooke, 2000.

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23

Hautier, Louis. "Intraguild predation in Harmonia axyridis and its effects on native coccinellids." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209619.

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During the 1990s, over a period of just a few years, the multi-colored Asian lady beetle, Harmonia axyridis (Pallas) invaded the entire area of northern Europe. In parallel with this invasion, a decline in native coccinellid species was recorded in Belgium, Britain, and Switzerland, affecting mainly one common species: the two-spot ladybird, Adalia bipunctata L. An impressive trait of H. axyridis, that could explain both its high invasiveness and the decline of native coccinellids, is its predation behaviour. Intraguild predation is a trophic interaction between species that share the same pre

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24

Creazzo, Fabrizio. "Oxygen evolution reaction at cobalt oxides/water interfaces : heterogeneous electrocatalysis by DFT-MD simulations & metadynamics Ab initio molecular dynamics study of an aqueous NaCl solution under an electric field Ionic diffusion and proton transfer in aqueous solutions of alkali metal salts Ionic Diffusion and Proton Transfer in Aqueous Solutions under an Electric Field: State-of-The-Art Ionic diffusion and proton transfer of MgCl2 and CaCl2 aqueous solutions: an ab initio study under electric field DFT-MD of the (110)-Co 3 O 4 cobalt oxide semiconductor in contact with liquid water, preliminary chemical and physical insights into the electrochemical environment Enhanced conductivity of water at the electrified air–water interface: a DFT-MD characterization Ions tune interfacial water structure and modulate hydrophobic interactions at silica surfaces." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASE012.

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Dans cette thèse, des simulations DFT-MD couplées à des techniques inno-vantes de métadynamique, sont appliquées pour acquérir une compréhensionglobale des interfaces aqueuses d'oxyde de cobalt Co3O4 et CoO(OH) dansla catalyse de la réaction d'évolution de l'oxygène (OER), et ainsi éventuellement aider à la conception de nouveaux catalyseurs basés sur des matériaux non précieux, un domaine clé de la recherche scientifique et technologique, particulièrement important pour l'économie de l'hydrogène, pour les technologies vertes dans une période de temps avec une demande toujours plus croissantee

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25

Blein, Olivier. "Les séquences magmatiques d'arc du Paléozoïque supérieur et Trias du Nevada (Etats-Unis d'Amérique) et de Colombie britannique (Canada) : structure, pétrologie et géochimie : implications dans l'évolution géodynamique des Cordillères nord-américaines et des processus d'accrétion continentale." Phd thesis, Grenoble 1, 1996. http://www.theses.fr/1996GRE10077.

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Le continent nord-américain présente sur sa bordure pacifique un domaine constitué par l'accrétion du Paléozoïque supérieur au Cénozoïque de fragments lithosphériques: les Cordillères nord-américaines. Ces fragments lithosphériques sont caractérisés par des séquences volcaniques d'arc ou de bassin océanique. Les séquences volcaniques d'arc paléozoïques supérieurs et du Trias ont longtemps été considérées comme un seul arc. Depuis une dizaine d'années, des équipes françaises ont montré que les séquences d'arc du Paléozoïque et du Trias des Klamath orientales et de Sierra Nevada (Californie du n

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Tosi, Hugo Ricardo. "Management alternatives to reduce the alkaloid content of reed canarygrass forage." 1991. http://hdl.handle.net/1993/17410.

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Marečková, Michaela. "Obsahové látky v rostlinách čeledi lilkovitých (Solanaceae) s využitím ve výuce biologie." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-326369.

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The aim of the thesis titled "Substances contained in Plants of the Nightshade Family (Solanaceae) and their Usage in Biology Teaching" is to familiarize the reader with basic toxicological and pharmacological terms contained in the information on Nightshade plants (Solanaceae). Further it introduces Nightshade plants (Solanaceae) and their substances in more detail. It describes the use and abuse of these plants in poisoning, usage in traditional medicine, homeopathy and modern medicine. It outlines the history of the use and especially abuse of plants containing alkaloids. It also describes

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28

Chang, Po-Yao, and 張博堯. "Effect The Rheological Properties Of Cement/Superplasticizer Related To The Alkali Content In The Cement." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/63747886964508879397.

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碩士<br>國立高雄應用科技大學<br>土木工程與防災科技研究所<br>91<br>What’s the degree that alkali content can make influence to the rheological behavior of cement paste which include superplasticizer can’t understand completely still. So the research want to use the different type of cement (I、II、V type) to mimic the different C3A and alkali content, add in the different superplasticizer use mini slump spread areas, Marsh cone flow time, Brookfield viscosity, setting time, bleeding content and SEM microcosmic analysis, to explore the influence that alkali content can make to the rheological behavior of cement paste whi

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29

Kerenidis, Kerrie. "Mitigating alkali silica reaction in concrete with supplementary cementing materials when used in conjunction with portland cements having alkali contents in excess of 1.0%." 2007. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=788850&T=F.

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Reddy, P. Hari Prasad. "Remedial Measures For Alkali Induced Heave In Soils." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/755.

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Sub-surface soil pollution by various processes with high concentration of contaminants can significantly alter geotechnical properties of soils causing unexpected failures of structures founded on them. The changes can occur due to alteration in soil water interaction processes and/or by intense chemical interactions leading to mineralogical and microstructural changes. Behaviour of soil upon contamination with alkali pollutant is one of the major concerns faced by the geotechnical researchers in recent years. In the present study an attempt has been made to understand the role of mineralogic

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Reddy, P. Hari Prasad. "Remedial Measures For Alkali Induced Heave In Soils." Thesis, 2008. http://hdl.handle.net/2005/755.

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Sub-surface soil pollution by various processes with high concentration of contaminants can significantly alter geotechnical properties of soils causing unexpected failures of structures founded on them. The changes can occur due to alteration in soil water interaction processes and/or by intense chemical interactions leading to mineralogical and microstructural changes. Behaviour of soil upon contamination with alkali pollutant is one of the major concerns faced by the geotechnical researchers in recent years. In the present study an attempt has been made to understand the role of mineralogic

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32

Fotovat, A. "Chemistry of indigenous Zn and Cu in the soil-water system : alkaline sodic and acidic soils / by Amir Fotovat." 1997. http://hdl.handle.net/2440/19068.

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Copies of author's previously published articles inserted.<br>Bibliography: leaves 195-230.<br>xx, 320 leaves : ill. (some col.) ; 30 cm.<br>Title page, contents and abstract only. The complete thesis in print form is available from the University Library.<br>In this study the soil aqueous phase chemistry of Zn and Cu in alkaline sodic soils are investigated. The chemistry of trace metal ions at indigenous concentrations in alkaline sodic soils are reported. Metal ions at low concentrations are measured by the graphite furnace atomic absorption spectrometry (GFAAS) technique.<br>Thesis (Ph.D.)

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Mangalgiri, Kiranmayi. "Heavy Metals in Glass Beads Used in Pavement Markings." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-05-10966.

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Pavement markings are vital for safely navigating roadways. The nighttime visibility of pavement markings is enhanced by addition of retroreflective glass beads, most of which are made from recycled glass. Concern has been raised over the presence of heavy metals in glass beads used in pavement markings and their effect on human and environmental health. Based upon the potential risk associated with the presence of arsenic and lead in the glass beads, two Bills are currently being considered before the 112th Congress of the United States of America seeking to set a maximum permissible limit fo

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Biennek, Lars. "Entwicklung neuer Schmelztechnologien für alkalifreie Erdalkali-Alumo-Borosilikatgläser." 2017. https://tubaf.qucosa.de/id/qucosa%3A36632.

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Das Cold-Top-Schmelzen alkalifreier Borosilikatgläser hat im Vergleich zu angepassten Gas-Sauerstoff-beheizten Schmelzaggregaten nach dem Hot-Top-Prinzip wesentliche Vorteile, wie minimale Verdampfung von borsäurehaltigen Komponenten, hohe flächenspezifische Schmelzleistungen und niedrige Betriebskosten. Als Schlüsseltechnologie gilt der neu entwickelte Mo-Heizstrahler, welcher trotz der extrem schlechten elektrischen Leitfähigkeit der Schmelze eine aus Sicht der Schmelze indirekte elektrische Beheizung realisieren lässt. Mit Hilfe dieser Heizstrahler-Technologie lässt sich die Schmelze auf >

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35

Garcia, Anthony Michael. "Durability testing of rapid, cement-based repair materials for transportation structures." Thesis, 2014. http://hdl.handle.net/2152/26511.

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For repairing concrete transportation infrastructure, such as pavements and bridges, much importance is placed on early-age strength gain as this has a major impact on scheduling and opening to traffic. However, the long-term performance and durability of such repair materials are often not satisfactory, thus resulting in future repairs. This research project focuses on the evaluation of the durability of various rapid-setting cementitious materials. The binders studied in this project include calcium aluminate cement (CAC), calcium sulfoaluminate cement (CSA), Type III portland cement, alkali

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