Vibrational and structural properties of lead-free piezoelectric (1-x)Na0.5Bi0.5TiO3–xCaTiO3 (0 < x < 1.00) solid solutions have been investigated using Raman spectroscopy and X-ray diffraction. Different anomalies were detected and analyzed taking into consideration the phase transition from rhombohedral …

To solve the problem of phosphorus leaching, the new method which uses iron-coated sand to absorb the ortho-P through the drainage pipes was generated recently. However, the method still need more research to apply it in practice. For this purpose, a main question of the thesis is generated: how is the …

Various diazo compounds, nitrile oxides, nitrones and azomethine ylides were examined in 1,3-dipolar cycloadditions to enantiomerically pure 5-(R)-menthyloxy-2(5H)-furanone 1a. Pyrazoline 9 was obtained in 100% c.y. as a mixture of 2 diastereoisomers in ratios up to 72: 28, whereas pyrazoline 16 was …