Assessement of effects of cadium chloride exposure on the anaphylaxis reaction to food was done on six week old Swiss and BALB/c female mice. The animals were exposed to cadium as cadium chloride for either three days or six weeks. Intra-peritonal dose of cadium chloride was injected once a day, five days per week for three successive weeks. The animals were then sensitised to cow's milk by force-feeding with cow's milk for three consecutive days. Oral exposure of mice to a high dose of cadium resulted in cytotoxicity of liver and kidney cells. Retardation in growth rate and haematology change were detected. Proliferative response to the T-cell epitope from the circumsporozoite protein of plasmodium falsiparum was decreased in cultures of lymph node cells from cadium chronically treated mice and sensitised with the same peptide. In contrast, an increase of cell proliferation was observed when cow's milk was used instead. Significant increase in Immunoglobulin E level and Anaphylactic reaction dependent on the quantity of cadium exposed were recorded. No protective effect of ascorbic acid or zinc acetate on cadium alteration of immune response was observed / Master of Science (Hons) (Food Science)

This diploma thesis deals with creation of transparent conductive layers on glass substrate, which serve as underlay for electrochromic layers. Zinc acetate dissolved in methane and distilled water serves as basis of solution. We are searching for optimal amount of either Fluor or Boron in depositted solutions to achieve best transparency and layer conductivity.

Magister Scientiae - MSc (Physics) / Zinc oxide (ZnO) is a wide and direct semiconductor with a wurtzite crystal structure. Its multifunctionality as the ideal candidate in applications such as blue-UV light emitting diodes, transparent conducting oxide, selective gas sensor and efficient catalyst support among others, has attracted a significant interest worldwide. Nano-scaled ZnO has been synthesized in a plethora of shapes. A rich variety of physical and chemical methodologies have been used in the synthesis of undoped or doped ZnO. However, such methods either necessitate relatively high vacuum infrastructures, elevated temperatures, or the use of toxic reagents. The "green chemistry" synthesis of metal oxide nanoparticles which is based on using natural plant extract as an effective 'reducing agent' of metal precursor, has been reported to be a cleaner and environment-friendly alternative to the physical and chemical methods. The thesis is based on the synthesis and the main physical properties of pure ZnO nanoparticles synthesized by a completely green chemistry process using the natural extract of Aspalathus Linearis to bio-reduce the zinc acetate precursor. The obtained ZnO nanopowdered samples were annealed at different temperatures from 300 °C to 600 °C. The samples were characterized using Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Transmission Electron Microscopy, X-ray Diffraction, Differential Scanning Calorimetry, Thermogravimetric Analysis and Fourier Transform Infrared. Highly pure quasi-spherical ZnO nanoparticles with an average crystallite size of 24.6 nm (at 300 °C), 27.2 nm (at 400 °C), 27.6 nm (at 500 °C), and 28.5 nm (at 600 °C) were found. The results also showed that the average crystallite size increased with an increase in annealing temperature. It was successfully demonstrated that the natural plant extract of Aspalathus Linearis can be used in the bio-reduction of zinc acetate dihydrate to prepare highly pure ZnO nanoparticles.