Phomopsis longicolla– new pathogen on Abutilon theophrasti in Croatia     

K. Vrandecic  J. Cosic  L. Riccioni  T. Duvnjak  D. Jurkovic 《Plant pathology》2004,53(2):251-251

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Isolation of Diaporthe phaseolorum var. caulivora from Abutilon theophrasti in Croatia     

K. Vrandecic  J. Cosic  L. Riccioni  T. Duvnjak  D. Jurkovic 《Plant pathology》2005,54(4):576-576

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Sorption of Heavy Metals by Canola Meal     

Al-Asheh  Sameer  Duvnjak  Zdravko 《Water, air, and soil pollution》1999,114(3-4):251-276

The results from this research indicate that canola meal (CM) can be used for adsorption of Zn²⁺, Cd²⁺, Cu²⁺, Pb²⁺and Ni²⁺from aqueous solutions. The order of sorption for these metals in single metal systems was as follows (molar basis): Zn²⁺> Cu²⁺> Cd²⁺> Ni²⁺> Pb²⁺. It was noted that a decrease in the concentration of CM caused a higher metal loading on the meal. Increases in the metal concentration, temperature or pH resulted in increased sorption of the metals by the meal. The systems with identical ratios of CM to Zn²⁺concentrations, regardless of their levels, resulted in the same amount of metal adsorbed per unit weight of meal. The Freundlich isotherm type model was used in this study and was found to fit the experimental equilibrium concentration data of Zn²⁺and Cd²⁺; however, the Langmuir isotherm model fit only the equilibrium data of Zn²⁺. Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray (EDX) microanalyses revealed that the metal ions were sorbed mainly at the cell wall and only small amounts of ions diffused into the cytoplasm of the CM cells. The Electron Spin Resonance (ESR) tests were inconclusive regarding the direct participation of free radicals in copper sorption.  相似文献