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Detailed electron microscopic investigations confirmed that the shape anisotropies of the columnar grains grown in iron films evaporated at oblique incidence, which are parallel and perpendicular to the columnar grain axis, are principally responsible for both of the anisotropy fields H k (1) and H k (2) analyzed from torque measurements, respectively. Fiber textures found by X-ray diffraction were of the types of {111} and {100} perpendicular to the columnar grain axis, having minor contribution to H k (1) and H k (2), but appearing to have some connection with their rapid increase with increasing angle of oblique incidence.

applied cyanoacrylate-polymethyl methacrylate sealant to the pits and fissures of 1703 occlusal surfaces of 990 school children of 6 schools and the same numbers of opposite surfaces were left untouched as. a control. The different criteria regarding the caries and the sealing procedure among the various collaborators were well coordinated before the trial. Cyanoacrylate monomer and polymethyl methacrylate containing a suitable amount of calcium hydroxide were mixed on an acetate sheet and then the mixture was applied to an occlusal surface preconditioned by approximately 40% phosphoric acid. The caries reduction figure was obtained in comparison with different incidences of cavities produced on both the test and control teeth. The reductions in the caries incidence, 60.7 % after 6 months and 38.3 % after one yeaf produced statistically significant differences. Retention figures of the sealants were 76.7% after 6 months and 52.6% after 12 months respectively.

Thep + np + diode is used to determine the hole drift velocity versus field curves in silicon as a function of temperature. By taking the analytical expression of the hole drift velocity,v=v m (E/E c )/(1+E/E c ),v m andE c are obtained in the temperature range from 210–420 K.v m varies from 1.04×107 cm/sec at 210 K to 1.11×107 cm/sec at 420 K, whileE c increases from 1.05×104 V/cm at 210 K to 5.3×104 V/cm at 420 K. The curve at 300 K is very close to the result of Norris and Gibbons.