“When it comes to sperm, you’re half the man your grandfather was”, the Esquire magazine headline proclaimed earlier this year. It’s the next Silent Spring, U.S. News and World Report declared, reflecting the views of U.S. Vice President Albert Gore. “Hormonal Sabotage” declared Natural History magazine, in a headline stretched across two pages. What’s behind all the fuss? Well, apparently huma...

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Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences.

In 1972, Bender and Knuth established a bijection between certain infinite matrices of non-negative integers and plane partitions and in [2] a bijection between Bender-Knuth matrices and n-color partitions was shown. Here we use this later bijection and translate the recently found n-color partition theoretic interpretations of four mock theta functions of S. Ramanujan in [1] to new combinatori...

13 An 80 mm long polarizing S-bender with a large cross section of 30 mm x 100 mm for the 14 instrument MIRA at the FRM II has been simulated, built and tested. The results of the 15 experiment show for the wavelength of 4.4 Å a homogenous polarization of more than 98% 16 across the bender cross section and a high transmission of above 65% of the spin up 17 component of the neutron beam. The be...