Eastman Kodak
5.Application of Eastman-Kodak AQ Film ModifiedElectrode in Cathodic Stripping Voltammetry forthe Determination of Trace Iron
9.This article analyses the emulsion preparation patents of silver halide photographic materials in American Chemical Abstracts,especially the patents applied by Eastman Kodak and Fuji companies in recent years,and comcludes that the patents mainly cover the preparation of AgCl- rich silver halide tabular grain emulsions,introduction of line dislocation to tabular grains and adding method of silver iodide.
10.Photographic observations of the recurrent nova WZ Sge have been carried out,at Beijing Observatory, using the 40/200 cm double astrograph with the Eastman Kodak 103a O plates wi-thout filter, during the recent outburst of WZ Sge, from Dec. 6 to 25, 1978. All plates were measured by an iris photometer, and the photographic magnitudes were calibrated by the-stars in the selected area.

