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Article
Synergism between urea and urease-positive bacteria in controlling root-knot nematodes
Synergistic effects between urea and urease-positive bacteria against root-knot nematodes were assayed in laboratory and greenhouse trials. We isolated 85 urease-positive bacterial strains from soil, compost, ...
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Article
Synthesis, growing processes and physical properties of CdS nanoclusters in Y-zeolite studied by positron annihilation
Direct synthesis of CdS nanoclusters within the pore structure of Y zeolite was made. The location of CdS nanoclusters inside Y zeolite hosts was confirmed by the blue-shifted reflection absorption spectra wit...
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Article
Defects in NTD InP probed by positron annihilation spectroscopy
Two samples of high purity InP extracted from the same wafer were examined by positron annihilation spectrum analysis after having been, processed by means of thermal Neutron Transmutation Do** (NTD). Compar...
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Article
Defect properties of GaAs by positron annihilation
Positron lifetime and Doppler Broadening spectra have been measured for three types of GaAs semiconductors. Direct evidence of native vacancy-type defects is found in the semi-insulating (SI-type) and n-type s...