[en] The neutron temperatures of the BNL Medical Reactor and in the V-11 facility of the HFBR were determined to be 48⁰C and 39⁰C, respectively. ²²Na resonance energy is less than 0.01 eV. The development of PIXE (Proton Induced X-Ray Emission) technique and operation of the Dynamitron have reached the point where large numbers of samples can be routinely analyzed with high sensitivity. Aerosal samples are being collected in downtown Manhattan; being analyzed for the various constituents as a function of particle size, time and elevation. Samples of marine sediment and sludge are also being analyzed by PIXE for their metal content. PIXE technique has also been applied for analyses of a variety of archaeological artifacts, human tissue, paint, and geological specimens. The metastable isomers /sup 204m/Pb, /sup 199m/Hg, /sup 111m/Cd, /sup 115m/In and /sup 87m/Sr have been produced by inelastic neutron scattering by 3 MeV neutrons and the excitation functions determined. A study of the reaction ¹⁹F + P → α + ¹⁶O + γ for the determination of ''freons'' in the atmosphere has been initiated. The study of hydrogen overvoltage at single crystal electrodes will be continued. The effect of varying dichromate concentration on the pH of perchloric acid solutions is the same as previously observed for hydrochloric acid solutions, proving that it was not an effect of the medium. The effect on pH has also been verified over a wider pH range up to 4.4. Electrophoresis studies of chromium species show 3 different species; with one specie 1 at pH 1, one at pH 2 to 10.5, and one at pH more than 4.60. Homogeneous solvent extraction of Fe(III), Cu(II), Ni(II), Zn(II), Pb(II), Cd(II), Ca(II) Ba(II) and Mg(II) with solutions of TTA in propylene carbonate have been investigated