Laser-Assisted Synthesis of Colloidal FeW O and Fe/Fe O Nanoparticles in Water and Ethanol.

Homogeneous polycrystalline Fe O nanoparticles were generated by ablation of iron targets in water by nanosecond laser pulses at 532 nm. In ethanol, crystalline core-shell Fe/Fe O structures with size medians around 20 nm were produced. The ablation of FeW O targets in water resulted in crystalline hollow shells and homogeneous FeW O nanoparticles.

Laser-Assisted Synthesis of Colloidal Ni/NiO Core/Shell Nanoparticles in Water and Alcoholic Solvents.

The nanosecond-pulse laser-assisted generation of Ni/NiO core/shell nanoparticles (NPs) in water and alcoholic fluids can yield colloidal solutions without surfactants. The size distribution can be controlled by the nature of the alcohol, the number of laser pulses and the laser fluence. The incubation of the nickel target ablation in liquid contact shows a dependence on the carbon number of the respective alcohol.

Comparison of various serological methods and diagnostic kits for the detection of acute, recent, and previous rubella infection, vaccination, and congenital infections.

The antibody development after natural rubella infection and rubella vaccination has been followed in 802 sera from 493 patients and 71 sera from 22 vaccinees. Also examined were 67 sera from 28 infants with rubella embryopathy and sera from 50 children with presumed prenatal infection. In addition, 777 sera from 641 patients tested for routine rubella diagnosis were studied.