to finality, and it is our present intention to refine and extend this work as much as possible on the experimental side. 1 B. Davis, Physic. Rev., 9, 64 (1917). 2 D. L. Webster, Ibid., 9, 220 (1917). 8 B. Davis, Ibid., 11, 433 (1918). 4 D. L. Webster and A. E. Hennings, Ibid., 21, 312 (1923). ' H. A. Kramers, Phil. Mag., 46, 869 (1923). 6 W. W. Nicholas, Physic. Rev., 29, 619 (1927). 7 A. Jons...

The potential of recovering propionic acid from discharged water in vitamin B(12) production by anaerobic fermentation was investigated in this paper. A primary amine, N(1923), was used as the extractant, kerosene as diluter and n-octanol as modifier. The influences of the content of N(1923) in the organic phase, the phase ratio and the pH of aqueous phase on the extraction yield of propionic a...

With little fanfare, marijuana became a prohibited substance in 1923. Even though it had been used for sacramental, medicinal and recreational purposes for 10,000 years, when Parliament decided to criminalize marijuana use in 1923, few members of Parliament had even heard of this drug. In fact, in 1923, few Canadians were using it, and until the explosion of the counterculture in the 1960’s, th...

www.sciencemag.org (this information is current as of January 5, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/283/5409/1923 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/283/5409/1923#otherarticles ...

Karlheinz Schwarz 1,*, Lu J. Sham 2, Ann E. Mattsson 3 and Matthias Scheffler 4,5 1 Institute for Materials Chemistry, Vienna University of Technology, A-1060 Vienna, Getreidemarkt 9/165, Austria 2 Department of Physics, University of California San Diego, La Jolla, CA 92093-0319, USA; [email protected] 3 Multi Scale Science, Sandia National Laboratories, Albuquerque, NM 87185-1322, USA; aematts@s...

R Kissling, a pillar of US Center for Disease Control (CDC) infectious diseases programs through an era of great programmatic and institutional growth (1947– 1973), died November 13, 2013 at his home in North Carolina. Through his years at CDC, Bob led investigations of great diversity and impact, always with the same sense of openness, integrity, composure, and respect for everyone involved. T...

We present a reformulation of the Bristow±Campbell model for daily solar radiation, developed using daily observations of radiation, temperature, humidity, and precipitation, from 40 stations in contrasting climates. By expanding the original model to include a spatially and temporally variable estimate of clear-sky transmittance, and applying a small number of other minor modi®cations, the new...

The first transfusion of blood for hemorrhagic disease of the newborn was performed in New York City by Dr. Alexis Carrel in 1908 [1]. The method was direct transfusion from the left radial artery to the right popliteal vein. The baby recovered. In 1909 Dr. Crile introduced the cuff and cannula method. In 1910 the Elsberg cannula was introduced, and during the same year, Vincent of Boston intro...