Bertil Åkesson (1928 – 2013)

BERTIL HILLE Selective Permeability of Potassium Channels

The permeability of K channels to various cations is studied in myelinated nerve. Ionic currents under voltage clamp are measured in Ringer solution containing tetrodotoxin and a high concentration of the test ion. Reversal potentials for current in K channels are determined and used with the Goldman-Hodgkin-Katz equation to calculate relative permeabilities. The ratios PTI:PK:PRb:PNH4 are 2.3:...

Arcetri, 1928 -1932

Early in 1928, a short time after receiving my doctorate at the University of Bologna, I was offered a position of assistant at the Physics Institute of the University of Florence. The Institute rose among olive trees, on the hill of Arcetri, a short distance from the villa where Galileo had spent the last years of his life as a political exile. The chair of physics was held by Professor Antoni...

Aloysio Janner (1928-2016).

Aloysio Janner passed away on 27 January 2016. He was born in 1928 in Muralto, Ticino, the Italian-speaking part of Switzerland. He was awarded his master’s degree with a thesis under Pauli at the ETH Zurich, but during his PhD work Pauli died, so Aloysio finished his PhD with Thellung, at the University of Zurich. Then he went to the Batelle Research Institute in Geneva, where he worked with E...

Meeting - 12th December 1928

Introductory note to 1928

Zermelo’s 1928 paper on measuring participants’ playing strengths in chess tournaments is a remarkable work in the history of paired comparison modeling. Apart from several contemporary papers by Thurstone (1927a, 1927b, 1927c), Zermelo’s paper was an isolated excursion into paired comparison methods that was far ahead of its time. After this paper, the field remained mostly dormant for about 2...