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We report the observation of the large Hall effect in the incommensurate spin-density wave (SDW) phase of (TMTSF)_2NO_3 and negative magnetoresistances in the semiconducting state above and below the commensurate SDW phase transition of (TMTTF)_2Br.

Co particles were obtained by patterining trilayers such as Co/Cu/Co and NiFe/Cu/Co grown by sputtering. Using elecronic lithography, we can design on these layers a microsensor for transport measurements and a Co particle on the top layer. The Co particle and the sublayers form a spin-valve structure due to their different coercitivity. We used GMR measurements to detect the magnetization reversal in Co particles with sizes between 100 x 50 micro m^2 and 180 x 20 nm^2. We present the size dependence of the GMR ratio and of the reversal magnetic field. For the smallest size, we do not find a Stoner-Wolfahrt rotation (i.e. uniform rotation) of the Co particle magnetization, but GMR displays staircase curves indicating discrete variation of this magnetization.

We report the transverse magnetoresistance measurements at ambient pressure in the organic conductor (TMTTF)_2Br in the temperature range between 4.2 K and 40 K and in the magnetic fields up to 8.5 T. We have found isotropic, negative and temperature dependent magnetoresistance which becomes negligible, close to 40 K. We interpret the observed behaviour within the picure of strongly correlated quasi-one dimensional systems.

Ispitivana su fizikalno-strukturna svojstva kork noževa, kako do sada upotrebljavanih (inozemnih), tako i novih proizvedenih u Hrvatskoj. Utvrđene su nepravilnosti u strukturi uvoznih noževa, a što ima za posljedicu njihovu lošu kvalitetu. Preporučeno je korištenje noževa domaćeg proizvođača.

Utvrđeno je da upotreba domaćih "Kork" noževa predstavlja višestruku uštedu, kako u vremenu trajanja noža (više od 2 puta) tako i kroz skračivanje vremena nabave i smanjenja zaliha te posebno u smanjenju ovisnosti o uvozu.