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Ilmars Zalite, Ints Steins and Natalja Zilinska

References 1. Schulz, I., Herrmann, M., Endler, I., Zalite, I., Speisser, B., Kreusser, J. Nano Si3N4 composites with improved tribological properties. Lubrication Science, 2009, vol. 21, pp. 69-81. 2. Gogotsi, Yu. G. Particulate silicon nitride-based composites. J. Mater. Sci., 2000, vol. 29, pp. 2541-2556. 3. Petzow, G., Hermann, M. Silicon nitride ceramics. Structure and Bonding. Springer, Berlin, 2002, vol. 102, pp. 71-72. 4

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Ilmārs Zālīte, Gundega Heidemane, Aija Krūmiņa, Dzintra Rašmane and Mikhail Maiorov

R eferences [1]A. C. F. M. Costa, E. Tortella, M. R. Morelli, and R. H. G. A. Kiminami, “Synthesis, microstructure and magnetic properties of Ni–Zn ferrites,” Journal of Magnetism and Magnetic Materials , vol. 256, no. 1–3, pp. 174–182, Jan. 2003. [2]P. Priyadharsini, A. Pradeep, and G. Chandrasekaran, “Novel combustion route of synthesis and characterization of nanocrystalline mixed ferrites of Ni–Zn,” Journal of Magnetism and Magnetic Materials , vol. 321, no. 12, pp. 1898–1903, Jun. 2009. https

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Palusamy Suppuraj, Ganesamoorthy Thirunarayanan, Meenakshisundaram Swaminathan and Inbasekaran Muthuvel

. [6] Z. He, T. Hong, J. Chen, and S. Song, “A magnetic TiO 2 photocatalyst doped with iodine for organic pollutant degradation,” Separation and Purification Technology , vol. 96, pp. 50–57, Aug. 2012. [7] G. Fan, J. Tong, and F. Li, “Visible-light-induced photocatalyst based on cobalt-doped zinc ferrite nanocrystals,” Industrial & Engineering Chemistry Research , vol. 51, no. 42, pp. 13639–13647, Oct. 2012. [8] A. I. Borhan, P

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Ingunda Sperberga, Polina Spela, Maris Rundans and Andris Cimmers

References 1. Konan, K. L., Peyratout, C., Smith, A., et. al. Surface modifications of illite in concentrated lime solutions investigated by pyridine adsorption. Journal of Colloid and Interface Science, 2012, vol. 382, issue 1, pp. 17−21. 2. Davidovits, J. Geopolymers: Inorganic polymeric new materials. Journal of Thermal Analysis, 1991, vol. 37, issue 8, pp. 1633−1656. 3. Davidovits, J. Geopolymer chemistry & applications. 2nd ed

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Ingars Reinholds, Iveta Pugajeva and Vadims Bartkevičs

-LC-MS/MS”, Journal of Chromatography B, 2014, vol. 969, pp. 162-170. [12] Q. T. Dinh, F. Alliot, E. Moreau-Guigon, J. Eurin, M. Chevreuil, P. Labadie, “Measurement of Trace Levels of Antibiotics in River Water using On-Line Enrichment and Triple-Quadrupole LC-MS/MS”, Talanta, 2011, vol. 85, N3, pp. 1238-1245. [13] J. L. Zhao, Y. S. Liu, W. R. Liu, Y. X. Jiang, H. C. Su, Q. Q. Zhang, G. G. Ying, “Tissue-Specific Bioaccumulation of Human and Veterinary

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Lauris Rupeks, Viktor Filipenkov, Ivars Knets, Visvaldis Vitins, Marina Sokolova, Liga Stipniece and Mara Pilmane

, issue 2, pp. 92-99 (1999). [17] B. Muller, D. Koch, R. Lutz, K. Schlegel, L. Treccani, K. Rezwan, “A novel one-pot. process for near-net-shape fabrication of open-porous resorbable hydroxyapatite/protein composites and in vivo assessment”, Mater Sci Eng C Mater Biol Appl. Sep. pp. 137-45. (2014). [18] J. Saidon, H. Jianing, Q, Zhu, K. Safavi, L. S. W. Spangberg, “Cell and tissue reactions to mineral trioxide aggregate and Portland cement

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Ruta Svinka, Visvaldis Svinka, Inga Pudze and Marite Damberga

review. Bioresour. Technol., 2006, vol. 97, pp. 1601-1085. 9. Chen, N., Zhang, Z., Feng, C., et al. Preparation and characterization of porous granular ceramic containing dispersed aluminum and iron oxides as adsorbents for fluoride removal from aquessolution, J. Hazard. Mater., 2011,186, pp. 863-868. 10. Dabare, L., Svinka, R. Influence of thermal treatment and combustible additives on properties of Latvian clay pellets. Processing and

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Juris Burlakovs, Rūta Ozola, Juris Kostjukovs, Ivars Kļaviņš, Oskars Purmalis and Māris Kļaviņš

. 2011, Chemosphere, vol. 84, issue 11, pp. 1548-1555. 38. Hunt, J.F., Ohno, T., He, Z., Honeycutt, C. W., Dail, D. B. Influence of decomposition on chemical properties of plant- and manure-derived dissolved organic matter and sorption to goethite. 2007, Journal of Environmental Quality, vol. 36, pp. 135-143. 39. Albrecht, R., Petit, J.L., Terrom, G. and Périssol, C. Comparison between UV spectroscopy and nirs to assess humification process during

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Kristīne Kalneniece, Andrejs Bērziņš, Zaiga Petriņa, Kristīne Ruģele, Elīna Salava, Kārlis Švirksts, Māra Grūbe, Vizma Nikolajeva and Olga Mutere

REFERENCES [1] (2008, May 3). On the management of bio-waste in the European Union [Online]. Available: [2] R. Campuzano and S. González-Martínez, “Characteristics of the organic fraction of municipal solid waste and methane production: A review,” Waste Management , vol. 54, pp. 3–12, Aug. 2016. [3] Al Seadi, T., Lukehurst, C. “Quality management of digestate from biogas plants used as fertiliser” IEA Bioenergy Task 37 Energy