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We report on the collective integration technology of vertically aligned nanowires (NWs). Si and ZnO NWs have been used in order to develop a generic technological process. Both mineral and organic planarizations of the as-grown nanowires have been achieved. Chemical vapour deposition (CVD) oxides, spin on glass (SOG), and polymer have been investigated as(More)
Thirty patients with lower extremity ulcers of different aetiologies, although mainly of venous origin, were treated with an occlusive hydrocolloid dressing twice a week for a maximum period of 12 weeks. No antibacterial chemotherapy was utilized. A culture was taken of the exudate of the ulcer before commencement of treatment and weekly or bi-weekly(More)
Since 1981 we monitored all the bacteria strains isolated from patients bearing a surgical infection and hospitalized in our department. We also tested the susceptibility of the isolated strains to different antibiotics. The observed results at three different intervals (1981, 1984, 1987-1988) reveal an increase in Gram+strains. Among the tested antibiotics(More)
We calculate the one-quark-loop amplitude for the low energy γγ → ππ collision in the context of the Nambu and Jona-Lasinio model with scalar and pseudoscalar four quark couplings to all orders in the external momenta. We show that the NJL predictions for the γγ → π + π − reaction are not far from the Born amplitude, which is close to the data, and is(More)