A simple method of solving for the phase shifts of the pion-proton scattering is presented. The rapid solution afforded can be utilized, as the Ashkin diagrams have been employed, to give starting values to an electronic computer or alternatively to analyze with more ease the variation of the phase shifts as a function of the input data in terms of the coefficients of the angular distributions. A new plot of a function of the total cross section versus the pion energy is introduced. The nearly straight line resulting should help to evaluate the experimental data.

Although the results reported herein are rather encouraging and show the possibilities of utilizing flotation to increase recoveries and in some instances grades, they should not not be considered an optimum. As stated previously, time did not permit a detailed investigation of all reagents an conditions to obtain maximum grades and recoveries, but sufficient data, with enough typical samples, have been obtained to indicate a definite trend and encouragement for further studies. A comparison of the flotation results obtained with each of the samples is presented in Table 2.

Sixty-nine cases of suspected brain lesions were studied with both routine isotope encephalometry and the graphic method of analysis. Of thirty-two space occupying lesions, 68.7% were correctly diagnosed by both means, while 18.8% were negative with the routine method but were positive with the graphic method. The overall accuracy of locating a tumor when present was 87.5%. The proposed design for a scanning scintillation coincidence isotope-encephalometer is discussed.

As previously reported, zirconium undergoes large dimensional increases after scaling in air in a critical temperature range, 700 degree-1050 degree C. This finding was observed with specimens of a constant thickness (0;062 in.) To study the thickness effect, a number of specimens ranging in thickness from 0.020 to 0.200 in. were scaled in air at a temperature (900 degree C) where the growth is a maximum for a given time. Both cold rolled iodine sheet and forged iodide bar stock were used. to determine the effect of orientation, specimens from the forged bar were obtained such that the scaling surface was either parallel to or perpendicular to the long axis of the bar.

Equipment lists and operating procedures are present for a laundry designed to wash contaminated clothing.

This technical report summarized studies in the high temperature scaling of zirconium, and covers the period from March 1, 1955 to December 15, 1955. One technical progress report covered the progress of the investigation from April 1, 1953 to march 1, 1955. The previous work was concerned largely with the scaling behavior of zirconium in air, pure oxygen, pure nitrogen and mixtures of oxygen and nitrogen. The major finding arising from these studies was that the peculiar scaling behavior of zirconium in air -- tremendously accelerated scaling rate after a critical time, along with large dimensional increases of the metal and a change in the nature of the scale -- was evident with mixtures of oxygen and nitrogen, but not with pure oxygen or pure nitrogen. This suggested that the joint presence of oxygen and nitrogen is required for the various peculiar phenomena to set in. In a continuation of the work reported in the First Technical Progress Report, studies now underway include the dependency of the various peculiar phenomena noted above on the gas composition, change in gas composition, shape and size of the piece, temperature and time, previous surface treatment, etc. The material and procedures employed in these …

A survey of reactors believed to be suited for most effect competition with conventionally fueled power plants in the continental USA. Basic design data are summarized for a light-water-moderated boiling reactor and aqueous homogeneous reactors.