Relevant bibliographies by topics / Cristobalit

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Cristobalit'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Cristobalit"

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Mattenklott, Markus, and Sandra Boos. "Bewertung amorpher Kieselsäuren an Arbeitsplätzen – Vergleich der Analysenverfahren in Deutschland und den USA/Evaluation of amorphous silicas at workplaces – comparison of the analysis methods in Germany and the USA." Gefahrstoffe 81, no. 03-04 (2021): 109–15. http://dx.doi.org/10.37544/0949-8036-2021-03-04-35.

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Unter dem Begriff amorphe Kieselsäuren wird eine Vielzahl von Stoffen zusammengefasst, die im Wesentlichen aus SiO2 mit unterschiedlichen Anteilen an H2O und in der Regel nur sehr geringen Anteilen anderer Elemente bestehen. Zu diesen gehören z. B. kolloidale Kieselsäuren (pyrogene, Gel- und Fällungskieselsäuren), Kieselglas, Kieselgut, gebrannte und ungebrannte Kieselguren und Kieselrauch. Abhängig von der gesundheitlichen Gefährdung werden Kieselglas, Kieselgut, Kieselrauch und gebrannte Kieselguren mit dem Grenzwert von 0,3 mg/m3 in der alveolengängigen Staubfraktion (A-Staub) und alle übri
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Stößer, Reinhard, Marianne Nofz, and Gerhard Ladwig. "Fe3+- und Al-O-_Al-Spezies in AIPO4 mit Cristobalit-und Tridymitstruktur." Zeitschrift für Chemie 29, no. 2 (2010): 75–76. http://dx.doi.org/10.1002/zfch.19890290224.

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Rafnsson, Vilhjálmur, and H. Gunnarsdóttir. "Lung cancer incidence among an Icelandic cohort exposed to diatomaceous earth and cristobalit." Scandinavian Journal of Work, Environment & Health 23, no. 3 (1997): 187–92. http://dx.doi.org/10.5271/sjweh.197.

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Vasková, I., M. Hrubovčáková, and M. Conev. "Influence of additives in core-forming mixture." Archives of Metallurgy and Materials 62, no. 1 (2017): 335–38. http://dx.doi.org/10.1515/amm-2017-0050.

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Abstract In recent years, ingredients, also known as additives, which appreciably affect the quality of the casting surface, come to the fore. Additives - lower the temperature at which SiO2 (major component of silica sand) begins to soften and create a melt on the surface of the grains, increase the reactivity and decrease the temperature of a transition to tridimite and cristobalit. These passages support the increase of volume of subsurface sand stress and the tension for the formation of burrs and other casting defects on the surface of the core or the mold. Nowadays, as a great emphasis i
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Butler, M. A., and D. J. Dyson. "The Quantification of Different Forms of Cristobalite in Devitrified Alumino-Silicate Ceramic Fibres." Journal of Applied Crystallography 30, no. 4 (1997): 467–75. http://dx.doi.org/10.1107/s0021889897001672.

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When heat treated, amorphous alumino-silicate fibres will devitrify into crystalline phases which on cooling become stable at room temperature. X-ray diffraction has been used to identify and quantify the phases present in such products; mullite and two distinct forms of cristobalite have been observed. One form of cristobalite has been identified as α-cristobalite, the second form has been designated as α′-cristobalite. An internal standard approach was used to enable calibration curves to be obtained for the three crystallite phases, including the α′- cristobalite for which no commercially a
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Dollase, W. A. "X-ray powder diffraction study of K2MSiO4, M=Mg, Zn, Co, Cd." Powder Diffraction 11, no. 1 (1996): 51–55. http://dx.doi.org/10.1017/s0885715600008927.

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The title materials are stuffed cristobalites possessing moderate to extreme pseudosymmetry. On the bases of their X-ray powder diffraction patterns, the Mg, Zn, and Cd compounds had been previously reported as cubic and, more recently, the Zn phase as orthorhombic. Newly measured X-ray powder diffraction data demonstrate that all (including the hitherto unknown Co analog) have the Pca21 structure of Na2BeSiO4 at room temperature, but with a widely variable degree of cubic pseudosymmetry. Observed X-ray diffraction data are in good agreement with those calculated by the Rietveld method using a
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Damby, David E., Edward W. Llewellin, Claire J. Horwell та ін. "The α–β phase transition in volcanic cristobalite". Journal of Applied Crystallography 47, № 4 (2014): 1205–15. http://dx.doi.org/10.1107/s160057671401070x.

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Cristobalite is a common mineral in volcanic ash produced from dome-forming eruptions. Assessment of the respiratory hazard posed by volcanic ash requires understanding the nature of the cristobalite it contains. Volcanic cristobalite contains coupled substitutions of Al3+ and Na+ for Si4+; similar co-substitutions in synthetic cristobalite are known to modify the crystal structure, affecting the stability of the α and β forms and the observed transition between them. Here, for the first time, the dynamics and energy changes associated with the α–β phase transition in volcanic cristobalite are
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Niu, Shu Xin, Ding Zhong Tang, Xiao Guang Liu, et al. "Effect of Pre-Added Cristobalite Content on the Properties of Silica-Based Ceramic Cores." Materials Science Forum 848 (March 2016): 217–21. http://dx.doi.org/10.4028/www.scientific.net/msf.848.217.

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In this study, cristobalite was used as the addition to prepare silica based ceramic cores, and then the effect of cristobalite content on the mechanical and chemical properties was investigated. The increasing of pre-added cristobalite content resulted in more crystallized cristobalite in the sintered samples and the variation of the linear shrinkage and mechanical properties. When pre-added cristobalite content was 6.0 wt%, the shrinkage of ceramic core was 0.42%, the creep at 1540°C for 30 min was 0.10 mm, and the flexural strength at room temperature and at 1550°C were 25.2 MPa and 28.7 MP
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Gai, Pratibha L., M. A. Saltzberg, L. G. Hanna, and S. C. Winchester. "Structures of chemically stabilized ceramics." Proceedings, annual meeting, Electron Microscopy Society of America 51 (August 1, 1993): 924–25. http://dx.doi.org/10.1017/s0424820100150459.

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Silica based ceramics are some of the most fundamental in crystal chemistry. The cristobalite form of silica has two modifications, α (low temperature, tetragonal form) and β (high temperature, cubic form). This paper describes our structural studies of unusual chemically stabilized cristobalite (CSC) material, a room temperature silica-based ceramic containing small amounts of dopants, prepared by a wet chemical route. It displays many of the structural charatcteristics of the high temperature β-cristobalite (∼270°C), but does not undergo phase inversion to α-cristobalite upon cooling. The St
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Zhang, Chong, Enze Liu, Zhi Zheng, et al. "Resistance to Molten Superalloy at 1550 °C for Molybdenum Metal Core with a Silica/Silicide Coating." Coatings 11, no. 3 (2021): 275. http://dx.doi.org/10.3390/coatings11030275.

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This work designs a silica (SiO2) layer on a molybdenum metal core to provide new insights on the corrosion resistance of the silica/silicide coating in the Ni-based superalloy. The molybdenum substrate coated with MoSi2 by pack cementation was pre-oxidized to fabricate a cristobalite scale on the surface and the preoxidation specimens were chosen to examine the corrosion-resistant property by using a DSM11 superalloy at 1550 °C. In order to prepare a cristobalite layer, the microstructure evolution of a 40- µm MoSi2 coating with the different oxidation parameters (temperature and time) was in
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Dissertations / Theses on the topic "Cristobalit"

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Janek, Ondřej. "Vliv tepelné expozice na pórovou strukturu a mineralogii hutného dinasu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265425.

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Silica bricks is a refractory building material which contains at least 93 % of silicon dioxide in polymorphic forms, mostly -tridymite, -cristobalite and unreacted -quartz. In glass industry is used for building crowns of glass tanks and in coke industry is used for building coke oven batteries. The advantage is the high refractoriness under load, high resistance to acidic melts. The disadvantage is the low resistance to changes in temperature below 600 °C. The thesis deals with the influence of repeated firing on the silica bricks and to its porous structure and mineralogical composition.
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Bürgisser, Christa S. "Transportverhalten von nicht-linear sorbierenden Stoffen in chromatographischen Säulen am Beispiel der Adsorption an Cristobalit /." [S.l.] : [s.n.], 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10653.

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Harima, Eiji. "Estabilização da fase β e obtenção da fase α da cristobalita a partir do resíduo da casca de arroz queimada." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/88/88131/tde-25112014-160127/.

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A sílica obtida da queima de casca de arroz foi convertida nas fases α e β. A estabilização da fase β foi obtida pela introdução de alumínio e cálcio na rede de sílica, 10001100 °C, na proporção CaO:2Al2O3:38SiO2. Foi observado que a transição de fase α→β da cristobalita α tem sua temperatura de transição reduzida de 175°C bem como sua entalpia de transição, de 16,0 J/g para 7,0 J/g. Esse efeito é causado pela introdução de íon K+, presente na casca de arroz, na estrutura da sílica. O processamento empregado nessa conversão usa equipamentos normalm
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Silva, Leila Maria Sotocorno e. "Utilização de areia descartada de fundição e resíduos inorgânicos de indústria de papel e celulose – grits e lama de cal – na produção de materiais vitrocerâmicos /." Presidente Prudente, 2019. http://hdl.handle.net/11449/192704.

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Orientador: Sílvio Rainho Teixeira<br>Resumo: A falta de sincronismo entre o desenvolvimento industrial e a conscientização ambiental trouxe inúmeros impactos adversos ao meio ambiente. A quantidade de resíduos industriais gerados diariamente aumenta, enquanto a adoção de sistemas de gerenciamento ainda falha em muitos aspectos. Assim, o objetivo principal deste trabalho é desenvolver materiais vitrocerâmicos através da mistura de Areia Descartada de Fundição (ADF) com resíduos sólidos oriundos da indústria de papel e celulose (grits e lama de cal), visando o desenvolvimento de novos produtos
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Sun, Tawei. "Effects of solid solution on the high-low inversion of cristobalite and the stabilization of high cristobalite." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54793.

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The inversion temperature of cristobalite was investigated by incorporating TiO₂, AlPO₄, and BPO₄ into the cristobalite phase using solid state reactions. The combination of TiO₂ and AlPO₄ proved to be most effective in lowering the inversion temperature of cristobalite. Phase diagrams at the high silica corner were constructed for the respective systems. High cristobalite was stabilized for compositions prepared from the CaO-Al2₂O₃-SiO₂ and CuO-Al₂O₃-SiO₂ system using sol-gel processing. The stabilization mechanism is attributed to the surface energy effect resulting from the formation of fin
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Swainson, Ian Peter. "The phase transition and dynamic disorder in cristobalite." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281903.

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Damby, David Ernest. "From dome to disease : the respiratory toxicity of volcanic cristobalite." Thesis, Durham University, 2012. http://etheses.dur.ac.uk/7328/.

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Exposure to fine-grained volcanic ash can potentially cause acute and chronic respiratory disease. The toxicity of ash is likely to vary depending on the type and style of eruption; eruptions at dome-forming volcanoes, in particular, can produce ash containing substantial quantities of respirable crystalline silica, a recognised human carcinogen and causative agent of silicosis. Volcanic domes crystallise crystalline silica as cristobalite, which is metastable at dome-forming temperatures (ca. 850 °C), through deposition from silica-saturated vapours and through devitrification of volcanic gla
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Doyle, Kathryn. "Stabilization of β-cristobalite in the SiO2-AlPO4-BPO4 system". Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1610107429523976.

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Guibovich, Pérez Pedro M. "Cristobal de Albornoz y el Taki Onqoy." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/121773.

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Dominguez, Christian. "Integrated hydrogeological study of San Cristobal Island (Galapagos)." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066225/document.

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La compréhension du cycle de l'eau d'une région où les ressources en eau sont limitées est fondamentale pour assurer une gestion durable de celles-ci, c'est le cas de Galápagos. Cette thèse présente la première étude intégrée du fonctionnement hydrogéologique des aquifères perché de l'île San Cristóbal. Pour ce faire, une approche pluridisciplinaire, fondée sur la mise en place d'un site expérimental sur le bassin versant de Cerro Gato (CG), a été conduite. Pour quantifier les entrées d'eau dans le système hydrologique une approche canopée-transfert hydrique du sol a été utilise. La recharge e
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Books on the topic "Cristobalit"

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Bou, Pedro Voltes. Cristobal Colón. Salvat, 1987.

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Cristobal Colón. Javier Vergara, 1985.

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Chapman, Paul H. Cristobal Colon's tracks. P.H. Chapman, 1997.

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L' or du Cristobal. Librio, 1995.

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La navegación de Cristobal Colón. Consejo Superior de Investigaciones Científicas, 2006.

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Robben, Frans M. A. Cristobal Plantino (1520-1589) y España. Biblioteca nacional, 1990.

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Papalino. Cristobalito: El redentor de El Fanguito, incluye los cuentos irreverentes. Editorial Sonrisa, 1992.

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A breve jornada de D. Cristobal: Romance. J. Olympio Editora, 1985.

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Gamarra, Pierre. La fabuleuse aventure de Cristobal Colon: Roman. Messidor, 1991.

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Vega, Lope de. El nuevo mundo descubierto por Cristobal Colón. Bulzoni, 1995.

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Book chapters on the topic "Cristobalit"

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Chakraborty, Akshoy Kumar. "Cristobalite Phase." In Phase Transformation of Kaolinite Clay. Springer India, 2013. http://dx.doi.org/10.1007/978-81-322-1154-9_23.

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Jusnes, Karin Fjeldstad, Merete Tangstad, and Eli Ringdalen. "Phase Transformations from Quartz to Cristobalite." In The Minerals, Metals & Materials Series. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95022-8_56.

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Kingma, Kathleen J., Rosemary E. Gerald Pacalo, and Paul F. McMillan. "Compression of PON cristobalite to 70 GPa." In Geophysical Monograph Series. American Geophysical Union, 1998. http://dx.doi.org/10.1029/gm101p0105.

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Yan, Ying, and Yongheng Zhou. "Preparation of Cristobalite and Its Thermal Characteristics." In Springer Geochemistry/Mineralogy. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13948-7_43.

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Adler, K. B., G. B. Butler, D. R. Hemenway, J. E. Schwarz, P. O. Banks, and J. N. Evans. "Exposure of Small Airways to Cristobalite In Vitro." In In Vitro Effects of Mineral Dusts. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70630-1_38.

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Boutilier, Robert G., and Ian Thomson. "Women and the San Cristobal mine." In The Social License. Routledge, 2018. http://dx.doi.org/10.4324/9780429507861-13.

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Şan, Osman, Cem Özgür, and Remzi Gören. "Fabrication of Beta-Cristobalite Porous Material from Diatomite with Some Impurities." In Advances in Bioceramics and Porous Ceramics IV. John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118095263.ch16.

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Ringdalen, Eli, Dian Adisty, and Leiv Kolbeinsen. "Quartz-Cristobalite Transformation and its Effect on Reactions in Si Production: Initial Studies." In Celebrating the Megascale. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118889657.ch19.

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Ringdalen, Eli, Dian Adisty, and Leiv Kolbeinsen. "Quartz-Cristobalite Transformation and Its Effect on Reactions in Si Production: Initial Studies." In Celebrating the Megascale. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48234-7_19.

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Sunderasan, Srinivasan. "San Cristobal Wind Power Project: Addressing Petrel and Diesel Conservation." In Cleaner-Energy Investments. Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2062-6_5.

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Conference papers on the topic "Cristobalit"

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Cavosie, Aaron J., William DA Ricard, Noreen J. Evans, Kai Rankenburg та Christian Koeberl. "β-Cristobalite in Libyan Desert Glass". У Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.343.

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Di Benedetto, Francesco, Andrea Giaccherini, Maurizio Romanelli, et al. "A Study of Radicals in Industrial Raw Cristobalite Powders." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.576.

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Totten, Gary A. "Quantitative Analysis Of Cristobalite In The Presence Of Quartz." In 1985 International Conference on Fourier and Computerized Infrared Spectroscopy, edited by David G. Cameron and Jeannette G. Grasselli. SPIE, 1985. http://dx.doi.org/10.1117/12.970817.

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Pimentel, Regina, Karen Harpp, Dennis Geist, et al. "ISPY SAN CRISTOBAL'S MAGMA SOURCE: THE GALAPAGOS ISLAND EDITION." In 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310929.

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Utkin, N. V., and L. D. Kurmanova. "Comparison of Chemical Composition of Different Age Opal-Cristobalite Rocks of Western Siberia." In Tyumen 2019. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201900590.

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Nelson, W. John, Scott D. Elrick, and Spencer G. Lucas. "LARAMIDE DEFORMATION IN THE FRA CRISTOBAL RANGE, SOUTHERN NEW MEXICO." In Joint 53rd Annual South-Central/53rd North-Central/71st Rocky Mtn GSA Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019sc-325729.

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Sviridov, D. V., and A. F. Nikiforov. "Separation of cesium-137 from natural waters using the sorbents based on opal-cristobalite rocks." In THE 2ND INTERNATIONAL CONFERENCE ON PHYSICAL INSTRUMENTATION AND ADVANCED MATERIALS 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0033024.

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Morón, V., C. Arasa, R. Sayós, H. F. Busnengo та Takashi Abe. "Theoretical Study of O[sub 2] Dissociation and Reflection on the β-Cristobalite (100) Surface". У RARIFIED GAS DYNAMICS: Proceedings of the 26th International Symposium on Rarified Gas Dynamics. AIP, 2008. http://dx.doi.org/10.1063/1.3076564.

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Chacon-Troya, Diego, and Ronald Rodriguez. "Undimotor Generation Analysis in Galápagos (San Cristobal Island) [Not available in English]." In 2018 IEEE 38th Central America and Panama Convention (CONCAPAN XXXVIII). IEEE, 2018. http://dx.doi.org/10.1109/concapan.2018.8596595.

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Keenan, D. R., and J. Hendrix. "406. Exposure to Ceramic Fibers, Cristobalite, Tridymite, and Quartz During Removal of Insulation in an Industrial Furnace." In AIHce 1998. AIHA, 1999. http://dx.doi.org/10.3320/1.2762814.

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Reports on the topic "Cristobalit"

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Kuchinski, Madeline A., Camden R. Hubbard, and Carl Robbins. Certification of SRM 1879 respirable cristobalite as a quantitative x-ray diffraction SRM. National Bureau of Standards, 1988. http://dx.doi.org/10.6028/nbs.ir.88-3742.

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