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Ewa Dryzek, Maciej Sarnek and Mirosław Wróbel

References 1. Gutierrez-Urrutia, I., & Raabe, D. (2012). Grain size effect on strain hardening in twinning-induced plasticity steels. Scripta Mater ., 66 , 992–996. DOI: 10.1016/j.scriptamat.2012.01.037. 2. Yakubtsov, I. A., Ariapour, A., & Perovic, D. D. (1999). Effect of nitrogen on stacking fault energy of f.c.c. iron-based alloys. Acta Mater ., 47 , 1271–1279. DOI: 10.1016/S1359-6454(98)00419-4. 3. Adler, P. H., Olson, G. B., & Owen, W. S. (1986). Strain hardening of hadfield manganese steel. Metall. Mater. Trans. A-Phys. Metal. Mater

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Zbigniew Surowiec, Marek Wiertel, Wojciech Gac and Mieczysław Budzyński

-Patkowska, A., & Zawadzki, W. (2012). Preparation, characterization and catalytic activity of palladium nanoparticles embedded in the mesoporous silica matrices. World J. Nano Sci. Eng. , 2 , 117–125. http://dx.doi.org/10.4236/wjnse.2012.23015 . 4. Sahoo, B., Sahu, S. K., Nayak, S., Dharaa, D., & Pramanik, P. (2012). Fabrication of magnetic mesoporous manganese ferrite nanocomposites as efficient catalyst for degradation of dye pollutants. Catal. Sci. Technol ., 2 , 1367–1374. DOI: 10.1039/c2cy20026k. 5. Kumar, C. S. S. R., & Mohammad, F. (2011). Magnetic

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Piotr Decyk, Andrzej B. Więckowski, Lidia Najder-Kozdrowska and Iveta Bilkova

References 1. Fierro, G., Morpurgo, S., Lo Jacono, M., Inversi, M., & Pettiti, I. (1998). Preparation, characterisation and catalytic activity of Cu-Zn-based manganites obtained from carbonate precursors. Appl. Catal. A-Gen ., 166 (2), 407–417. DOI: 10.1016/S0926-860X(97)00283-4. 2. Fei, J. H., Yang, M. X., Hou, Z. Y., & Zheng, X. M. (2004). Effect of the addition of manganese and zinc on the properties of copper-based catalyst for the synthesis of syngas to dimethyl ether. Energy Fuels , 18 (5), 1584–1587. DOI: 10.1021/ef049961f. 3. Fei, J

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Marek Wiertel, Zbigniew Surowiec, Mieczysław Budzyński and Wojciech Gac

Abstract

In this paper, results of positron annihilation lifetime spectroscopy (PALS) studies of MnFe2O4/MCM-41 nanocomposites in N2 and O2 atmosphere have been presented. In particular, the influence of manganese ferrite loading and gas filling on pick-off ortho-positronium (o-Ps) annihilation processes in the investigated samples was a point of interest. Disappearance of the longest-lived o-Ps component with τ5 present in the PAL spectrum of initial MCM-41 mesoporous material in the PAL spectra of MnFe2O4-impregnated MCM-41 measured in vacuum is a result of either a strong chemical o-Ps quenching or the Ps inhibition effects. The intensity I 4 of the medium-lived component initially increases, reaching a maximum value for the sample with minimum manganese ferrite content, and then decreases monotonically. Analogous dependence for the intensity I 3 of the shortest-lived component shows a maximum at higher MnFe2O4 content. Filling of open pores present in the studied nanocomposites by N2 or O2 at ambient pressure causes partial reappearance of the τ4 and τ5 components, except a sample with maximum ferrite content. The lifetimes of these components measured in O2 are shortened in comparison to that observed in N2 because of paramagnetic quenching. Anti-inhibition and anti-quenching effects of atmospheric gases observed in the MnFe2O4/MCM-41 samples are a result of neutralization of some surface active centers acting as inhibitors and weakening of pick-off annihilation mechanism, respectively.

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N Arnold, C Chong and M Binns

References 1. Arnold, N. P.: Grey flue-cured tobacco in Quebec; Canadex 181.532, Agriculture Canada, 1983. 2. Arnold, N., C. Chong and M. Binns: A comparative study of the mineral nutrients in grey and nongrey flue-cured tobacco; Can. j. Plant Sci. 61 (1981) 703-710. 3. Bonner, C. E.: Toxicity of manganese to Turkish tobacco in acid Kentucky soils; Soil Sci. 39 (1935) 15-33. 4, Cochran, W. G., and G. M. Cox: Experimental de-. signs; John Wiley & Sons, Inc., New York, N.Y., 1968

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PE Barney, LP Bush and TC Tso

plant; Kyoto Daigaku Shokuryo Kagaku Kenkyusho Hokoku 20 (1960) 14-21. Kirsch, R. K., M. E. Harward und R. G. Petersen: Interrelation of iron, manganese, and molybdenum in the growth and nutrition of tomatoes grown on culture solution; Plant Soil 12 (1960) 259-275. LeCompte, S. B., Jr.: Tobacco substation at Windsor, Report for 1940; Conn, Agric. Exp. Stn. Bull. (New Haven) Nr. 444, 1941, 270-278. Lohnis, M. P.: Symptoms of manganese toxicity in cultivated crops; Soils and Fert. 13 (1950

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G.P. Morie and P.E. Morrisett

Abstract

A method for the determination of trace transition metals in cigarette smoke is described. The smoke particulate matter is digested in nitric acid, the acid is neutralized, and metal ions are complexed with ammonium 1-pyrrolidinecarbodithioate and extracted with methyl isobutyl ketone. The metals are then determined in the organic solvent by atomic absorption spectroscopy. The sensitivity of the method is enhanced by the use of the methyl isobutyl ketone extraction. The method was evaluated for the determination of manganese, copper, iron, and zinc in the total particulate matter of smoke from University of Kentucky reference cigarettes and from commercial cigarettes. The amounts of these metals found in the smoke of a typical commercial filter cigarette are: 0.04 µg Mn, 0.10 µg Cu, 0.8 µg Fe, and 0.6 µg Zn. The method was used to show that cellulose acetate cigarette filters remove about the same percentage of metals as total particulate matter from smoke

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RL McDaniel, KM Torrence, DA Self and MJ Chang

; Analyst 101 (1976) 272-277. 16. Janssen, J.H, J.E. Van Den Enk, R. Bult, and D.C. De Groot: Determination of total mercury in air by atomie absorption spectrometry after collection on manganese dioxide; Anal. Chim. Acta 92 (1977) 71-77. 17. Kozuchowski, J. : Determination of total mercury in sediments by furnace combustion and plasma emission spectrometry; Anal. Chim. Acta 99 (1978) 293-297. 18. Dumarey, R., R. Heindryckx, and R. Dams: Determination of mercury in environmental standard

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Agata Stoch, Jan Maurin, Paweł Stoch, Jan Kulawik and Dorota Szwagierczak

.1103/PhysRevB.70.132101. 6. Kulawik, J., & Szwagierczak, D. (2007). Dielectric properties of manganese and cobalt doped lead iron tantalate ceramics. J. Eur. Ceram. Soc., 27, 2281-2286. DOI: 10.1016/j.jeurceramsoc.2006.07.010. 7. Wang, J., Neaton, J. B., Zheng, H., Nagarajan, V., Ogale, S. B., Liu, B., Viehland, D., Vaithyanathan, V., Schlom, D. G., Waghmare, U. V., Spaldin, N. A., Rabe, K. M., Wuttig, M., & Ramesh, R. (2003). Epitaxial BiFeO3 multiferroic thin fi lm heterostructures. Science, 299, 1719-1722. DOI: 10.1126/science.1080615

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Amin Shahrokhi, Erika Nagy, Anita Csordás, János Somlai and Tibor Kovács

protection and safety of radiation sources: International basic safety standards. Vienna: IAEA. International Atomic Energy Agency 2014 Radiation protection and safety of radiation sources: International basic safety standards Vienna IAEA 5. Kávási, N., Somlai, J., Vigh, T., Tokonami, S., Ishikawa, T., Sorimachi, A., & Kovács, T. (2009). Difficulties in the dose estimate of workers originated from radon and radon progeny in a manganese mine. Radiat. Meas. , 44 , 300–305. 10.1016/j.radmeas.2009.03.014 . Kávási N. Somlai J. Vigh T