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arithemtical functions II. The order of the Fourier coefficients of the integral modular forms Proc. Cambridge Phil. Soc. 35 357 – 372 10.1017/S0305004100021101

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Klingen, Helmut , Introductory lectures on Siegel modular forms , Cambridge Studies in Advanced Mathematics, 20. Cambridge University Press, Cambridge, 1990. Klingen H

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] Manin , Ju. I. , Modular forms and number theory , in: Proceedings of the International Congress of Mathematicians (Helsinki, 1978) , Acad. Sci. Fennica ( Helsinki , 1980 ), pp. 177 – 186 . [9

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Abstract  

Separations research at the Rocky Flats Plant /RFP/ has found ways to significantly improve americium removal from nitric acid/7M/ waste streams generated by plutonium purification operations. Partial neutralization of the acid waste followed by solid supported liquid membranes /SLM/ are useful in transferring and concentrating americium from nitrate solutions. Specifically, DHDECMP /dihexyl-N, N-diethylcarbamoylmethylphosphonate/ supported on Accurel polypropylene hollow fibers assembled in modular form transfers >95% of the americium from high nitrate /6.9M/, low acid /0.1M/ feeds into 0.25M oxalic acid stripping solution. Maximum permeabilities were observed to be 0.001 cm sec–1, consistent with typical values for other systems. The feed:strip volume ratio shows an inverse relationship to the fraction of metal ion transferred. Cation exchangers may be used to concentrate americium from the strip solution. Furthermore, OØD/iB/CMPO /or CMPO/ /octylphenyl-N,N-diisobutylcarbamoylmethylphosphine oxide/ has been tested in an extraction chromatography mode. Preliminary results show CMPO to be effective in removing americium if the feed is neutralized to 1.OM acidity and iron/III/ is complexed with 0.20M oxalic acid.

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