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This paper presents a nonstandard experimental procedure for detection of the presence of salts in building materials. The proposed tests helped modeling the deterioration of specific historical building materials caused by salts. The specimens were subject to visual survey and scanning electron microscope analyses, after submerging them in salt solutions. The results showed the damage of brick, cement based mortar and lime based mortar, caused by various concentrations of sulphate and chloride solutions. By this method various types of salt crystals could be identified. In cement and lime based mortars larger extents of salt deposits were found. A relevant difference between the control samples and the salt treated samples was observed.

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A feeding experiment was conducted on northern pike, Esox lucius L. (123.6±33.3 g initial body weight) applying graded dietary fish oil supplementation resulting three dietary fat levels (without supplementation: 6.2% fat and 11.7, 17.4% fat levels with supplementations) in a recirculation system. Feed consumption, feed efficiency and protein utilization of pike was not affected by the treatment. Whole body lipid content analysis showed that the composition of pike was significantly affected by the increasing level of fish oil supplementation, although no relationship was detected between the dietary and the fillet lipid content, as well as the protein content of fish bodies. High docosahexaenoic acid (DHA, C22:6n-3) proportions were found in the muscle lipids (groups fed fish oil supplementation), as compared to the dietary fatty acid compositions suggesting that with dietary fish oil supplementation the dietary precursors (mainly EPA) enable pike to convert long chain highly unsaturated fatty acids, especially DHA; resulting high DHA: EPA ratios in the fillet.

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. , Orban Z. Salt content analysis of historic masonries with SEM , Pollack Periodica , Vol. 9 , No. 1 , 2017 , pp. 7 – 16 . [4] Shaw P

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] Török B. , Len A. , Orbán Z. Salt content analysis of historic masonries with SEM , Pollack Periodica , Vol. 12 , No. 3 , 2017 , pp. 99 ‒ 108 .

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): Social media from a corporate perspective: A content analysis of official Facebook pages. Proceedings of the Academy of Marketing Studies , 16 (2), 11–15. Parsons A.L. Social media

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, 2001 , pp. 172 ‒ 183 . [13] Török B. , Len A. , Orban Z. Salt content analysis of historic masonries with SEM , Pollack Periodica

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Taira, E., Ueno, M., Saengprachatanarug, K. & Kawamitsua, Y. (2013): Direct sugar content analysis for whole stalk sugarcane using a portable near infrared instrument. J. Near Infrared Spec. , 21 , 281

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, lactate, and pyruvate for 2 h. The culture solution was collected and examined using a glucose oxidase method kit (Shanghai Rongsheng, Shanghai, China). 2.8 Glycogen content determination Glycogen content analysis was performed according to Gupta and

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