We have studied optical dephasing and spectral diffusion of the S1←S0 0–0 transition of bacteriochlorophyll-a (BChl-a) in the glass 2-methyltetrahydrofuran ~MTHF! at ambient (Dp 50) and high pressure (Dp53.6 GPa) between 1.2 and 4.2 K by time-resolved hole-burning. The ‘‘effective’’ homogeneous linewidth Ghom 8 follows a power law dependence on temperature, Ghom 8 5G081aT , where G085G01G0 1G0 ...

because of possible increase in the incidence of brucellosis in the city ghom , serological and bacteriological studies were conducted to investigate the rate of infection in this city. a total of 819 blood samples from human , “suspected” cases were investigated (serologically) 121 of these were positive for brucellosis ,(14/6%).of 182 samples of milk collected from cattle 50 were positive (27...

one of the growth limiting factors of onion plants is root and basal plate rot disease, caused by fusarium oxysporum f. sp. cepae. in this research, eight iranian onion genotypes, azarshahr red, ghom white, herssin, isfahan dorcheh, kashan white, nishabour ishaghabad, yazd abarkoh, zanjan gholigheseh and two commercial genotypes, texas erly grano and yellow sweet spanish were investigated. geno...