Bacteria in the sediments of lakes and rivers, and in soil, have been shown to convert inorganic mercury salts into the more toxic methylmercury and dimethylmercury, which are absorbed from the human gastrointestinal tract much more rapidly than their inorganic counterparts (Jensen & Jernelov, 1969; Matsumura et al., 1972; Beckert et al., 1974; Clarkson, 1971). Abdulla et al. (1973) demolistrat...

Emma M. Perkins,1 Yvonne L. Clarkson,1 Nancy Sabatier,1 David M. Longhurst,1 Christopher P. Millward,1 Jennifer Jack,1 Junko Toraiwa,1 Mitsunori Watanabe,2 Jeffrey D. Rothstein,3 Alastair R. Lyndon,4 David J. A. Wyllie,1 Mayank B. Dutia,1 and Mandy Jackson1 1The Centre for Integrative Physiology, The University of Edinburgh, George Square, Edinburgh EH8 9XD, United Kingdom, 2Department of Neuro...

This paper studies the monic semi-classical Laguerre polynomials based on previous work by Boelen and Van Assche, Filipuk et al., Clarkson Jordaan. al. proved that diagonal recurrence coefficient α n ( t ) $$ {\alpha}_n(t) satisfies fourth Painlevé equation. In this paper, we show off-diagonal β {\beta}_n(t) fulfills first member of Chazy II system. We also prove sub-leading both continuous dis...

K e y w o r d s E v a l u a t i o n of the determinant, Sign of the determinant, Matrix singularity test, Modular (residue) arithmetic, Rounding error analysis. 1. I N T R O D U C T I O N 1.1. T h e S u b j e c t a n d S o m e B a c k g r o u n d We s tudy the classical problems of the computat ion of the determinant of a matr ix or testing if the determinant vanishes, tha t is, if the matr ix ...

John Nicasio DO1 & Samy I McFarlane MD, MPH, FACP, FACE, CCD2† †Author for correspondence 1Assistant Professor of Research, SUNY-Downstate and Kings County Hospital Center, Division of Endocrinology, Diabetes and Hypertension, NY, 11203, USA 2†Associate Professor of Medicine, Interim Chief, Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, Box 50, State University of...

This will be my final issue serving as book reviews editor for Medical History, though I look forward to a continuing role on its editorial board. Beginning in 2013, book reviews for the journal will be edited by Professor Akihito Suzuki, of Keio University, and a new section on new media reviews will be edited by Professors Stephen Casper and Mariola Espinosa, of Clarkson University and Yale U...

Y. Aharonov, J. Oppenheim,* S. Popescu, B. Reznik, and W. G. Unruh School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel and Department of Physics, University of South Carolina, Columbia, South Carolina 29208 Department of Physics, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, Canada V6T 1Z1 Isaac Newton Institute, Cambridge Universi...

A quantitative mathematical formalism which was previously introduced has been utilized to obtain the cell kinetic parameters which characterize the in vivo leukemic myeloblast cell populations in two patients studied by Clarkson and his coworkers. The principal tentative conclusions are: (a) all cells which are actively proliferating must enter the resting state following cell division; (b) ab...