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Lantburkshögskolands Annaler. 26 . 199 - 215 . Fotyma , M. , Gosek , S. & Boreczek , B. , 1999 . Modification of the 0.01 M calcium chloride soil test for

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, P. & Apichartsrangkoon , A. ( 2012 a): Comparison of bioactive components in pressurized and pasteurized longan juices fortified with encapsulated Lactobacillus casei 01 . High Pressure Res. , 32 , 316 – 322

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. Houba , V. J. G. et al., 1990. Applicability of 0,01 M CaCl 2 as a single extraction solution for the assessment of the nutrient status of soils and other diagnostic purposes. Commun. Soil Sci. Plant Anal. 21. 2281

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. 25. 685–691. Appel , T. & Steffens , D., 1988. Vergleich von Electro-Ultrafiltration (EUF) und Extraktion mit 0.01 molarer CaCl 2 -Lösung zur Bestimmung des pflanzen-verfügbaren Stickstoffs im Boden. Z

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öntözés tartamhatása a 0,01 mol kalcium-kloridban oldható N-frakcióra alföldi mészlepedékes csernozjom talajon. Agrokémia és Talajtan. 58. 251 – 264. Bertáné Szabó, E. et al., 2010. Effects of long

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. 685–691. Appel, T. & Steffens, D., 1988. Vergleich von Electro-Ultrafiltration (EUF) und Extraktion mit 0.01 molarer CaCl 2 -Lösung zur Bestimmung des pflanzenverfügbaren Stickstoffs im Boden. Z

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Abstract  

The thermal degradation of the epoxy systems diglycidyl ether of bisphenol A (BADGE n=0)/1, 2 diamine cyclohexane (DCH) and diglycidyl ether of bisphenol A (BADGE n=0)/1, 2 diaminecyclohexane (DCH) containing calcium carbonate filler immersed and not immersed in hydrochloric acid have been studied by thermogravimetric analysis in order to compare their decomposition processes and to determine the reaction mechanism of the degradation processes. The value of the activation energies, necessary for this study, were calculated using various integral and differential methods. Analysis of the results suggests that hydrochloric acid does not affect the decomposition of the epoxy network and that the reaction mechanisms produce sigmoidal-type curves for the systems not immersed in HCl and deceleration curves for the same systems immersed.

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Abstract  

Enthalpy of formation of the perovskite-related oxide BaCe0.9In0.1O2.95 has been determined at 298.15 K by solution calorimetry. Solution enthalpies of barium cerate doped with indium and mixture of BaCl2, CeCl3, InCl3 in ratio 1:0.9:0.1 have been measured in 1 M HCl with 0.1 M KI. The standard formation enthalpy of BaCe0.9In0.1O2.95 has been calculated as −1611.7�2.6 kJ mol−1. Room-temperature stability of this compound has been assessed in terms of parent binary oxides. The formation enthalpy of barium cerate doped by indium from the mixture of binary oxides is Δox H 0 (298.15 K)=−36.2�3.4 kJ mol−1.

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Soil nitrogen undergoes a series of chemical and biological transformations, which influence their availability to plants and the leaching losses. Methods for measuring various forms of nitrogen in soil are important in order to improve N management and to minimize losses of essential nutrients in soils.  In the present study 0.01 M CaCl 2 extraction was used to determine the concentrations of ammonium, nitrate and N-organic forms, as these are closely related to the N mineralization potential of the soil and play a major role in nitrogen availability to plants. Improving the precision of nitrogen requirement estimation is essential for increasing the efficiency and minimizing potential losses of nitrogen in agricultural production. A better knowledge of the plant-availability of nitrogen may help improve the efficient use of fertilizers and organic manure. In the present study the amounts of N-NO 3 , N-NH 4 and N organic were studied in Westsik's crop rotation experiment. The crop rotation experiment was established in 1929, and is the best known and most remarkable example of continuous production in Hungary, enabling the study of the long-term effects of organic manure treatment, the development of models and the prediction of the probable influences of different cropping systems on soil properties and crop yields in the Nyírség (sandy soil) region of Hungary.  The study aimed the optimization of the fertilizer recommendation system by considering the soil N-organic content as a measurement of site-specific mineralization potential. The 0.01 M CaCl 2 extraction method measures soluble organic N compounds that are related to the mineralization of organic nitrogen in the soil.  The introduction of this concept can possibly result in a more environment-friendly nitrogen fertilization, without negative effects on the yield or the quality of produced crops. Taking practicability and costs into consideration, the 0.01 M CaCl 2 extraction method is suitable for the routine analysis of measuring easily available organic nitrogen. 

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obtain the final perovskite structure. Several catalysts were prepared by varying the ratio of barium used (x = 0, 0.1, 0.2, 0.3, 0.4 coded LBC 0, 1, 2, 3, 4, respectively). 3 Results and discussion The TGA/DTA analysis of the prepared perovskite catalyst

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