Interacting Ions in Biophysics: Real Is Not Ideal
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Dynamics September 6-4 1708.07400.Pdf
Dynamics of Current, Charge and Mass Bob Eisenberg Department of Applied Mathematics Illinois Institute of Technology USA Department of Physiology and Biophysics Rush University USA [email protected] Xavier Oriols Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, SPAIN [email protected] David Ferry School of Electrical, Computer, and Energy Engineering Arizona State University USA [email protected] Available on arXivhttps://arxiv.org/abs/1708.07400 at September 6, 2017 ABSTRACT Electricity plays a special role in our lives and life. The dynamics of electrons allow light to flow through a vacuum. The equations of electron dynamics are nearly exact and apply from nuclear particles to stars. These Maxwell equations include a special term, the displacement current (of a vacuum). The displacement current allows electrical signals to propagate through space. Displacement current guarantees that current is exactly conserved from inside atoms to between stars, as long as current is defined as the entire source of the curl of the magnetic field, as Maxwell did. We show that the Bohm formulation of quantum mechanics allows the easy definition of current without the mysteries of the theory of quantum measurements. We show how conservation of current can be derived without mention of the polarization or dielectric properties of matter. We point out that displacement current is handled correctly in electrical engineering by ‘stray capacitances’, although it is rarely discussed explicitly. Matter does not behave as physicists of the 1800's thought it did. They could only measure on a time scale of seconds and tried to explain dielectric properties and polarization with a single dielectric constant, a real positive number independent of everything. -
HISTORICAL SURVEY SOME PIONEERS of the APPLICATIONS of FRACTIONAL CALCULUS Duarte Valério 1, José Tenreiro Machado 2, Virginia
HISTORICAL SURVEY SOME PIONEERS OF THE APPLICATIONS OF FRACTIONAL CALCULUS Duarte Val´erio 1,Jos´e Tenreiro Machado 2, Virginia Kiryakova 3 Abstract In the last decades fractional calculus (FC) became an area of intensive research and development. This paper goes back and recalls important pio- neers that started to apply FC to scientific and engineering problems during the nineteenth and twentieth centuries. Those we present are, in alphabet- ical order: Niels Abel, Kenneth and Robert Cole, Andrew Gemant, Andrey N. Gerasimov, Oliver Heaviside, Paul L´evy, Rashid Sh. Nigmatullin, Yuri N. Rabotnov, George Scott Blair. MSC 2010 : Primary 26A33; Secondary 01A55, 01A60, 34A08 Key Words and Phrases: fractional calculus, applications, pioneers, Abel, Cole, Gemant, Gerasimov, Heaviside, L´evy, Nigmatullin, Rabotnov, Scott Blair 1. Introduction In 1695 Gottfried Leibniz asked Guillaume l’Hˆopital if the (integer) order of derivatives and integrals could be extended. Was it possible if the order was some irrational, fractional or complex number? “Dream commands life” and this idea motivated many mathematicians, physicists and engineers to develop the concept of fractional calculus (FC). Dur- ing four centuries many famous mathematicians contributed to the theo- retical development of FC. We can list (in alphabetical order) some im- portant researchers since 1695 (see details at [1, 2, 3], and posters at http://www.math.bas.bg/∼fcaa): c 2014 Diogenes Co., Sofia pp. 552–578 , DOI: 10.2478/s13540-014-0185-1 SOME PIONEERS OF THE APPLICATIONS . 553 • Abel, Niels Henrik (5 August 1802 - 6 April 1829), Norwegian math- ematician • Al-Bassam, M. A. (20th century), mathematician of Iraqi origin • Cole, Kenneth (1900 - 1984) and Robert (1914 - 1990), American physicists • Cossar, James (d. -
Here Are Some Additional Notes I Was Jotting Down
Growing Connections in Computational Neuroscience Report on a German-U.S. Collaborative Symposium Munich, June 8-11, 2008 Leo van Hemmen, Andreas Herz, Rob de Ruyter van Steveninck _____________________________________________________________ Julius Bernstein Kenneth Stewart Cole Cover pictures Portraits of Julius Bernstein and Kenneth Cole, and a key figure from a 1939 paper by Cole and Curtis. The figure demonstrates a dramatic increase in nerve membrane conductance during passage of an action potential. This result is a direct experimental confirmation of an essential feature of Bernstein’s theory of the action potential. Though their work was separated by a few decades, Cole’s studies in the United States were inspired by Bernstein’s work in Germany at the beginning of the 20th century. Cole, K.S. and Curtis, H.J., J Gen Physiol 22, 649-670 (1939) Acknowledgements The German-U.S. Collaborative Symposium, “Growing Connections in Computational Neuroscience,” was funded by the German Federal Ministry of Education and Research (BMBF) and the U.S. National Science Foundation (NSF). 2 Contents Executive Summary............................................................................................................ 4 Introduction......................................................................................................................... 5 Scientific Background......................................................................................................... 5 Programmatic Background ................................................................................................ -
Scott Feller Full Curriculum Vitae Dr. Scott E. Feller President and Lloyd
Scott Feller Full Curriculum Vitae Dr. Scott E. Feller President and Lloyd B. Howell Professor of Chemistry Wabash College 301 W. Wabash Ave Crawfordsville IN 47933 office (765) 361-6224 e-mail [email protected] EDUCATION Ph.D., Physical Chemistry, University of California, Davis. Dec 1993. Dissertation: Application of the Hypernetted Chain Approximation to the Electrical Double Layer. Advisor: Dr. Donald A. McQuarrie. B.A., Major: Chemistry, Minor: Mathematics, Willamette University, May 1989. ADMINISTRATIVE EXPERIENCE President of the College, Wabash College, 2020-present Dean of the College (Chief Academic Officer), Wabash College, 2014-2020. Chair, Division of Natural Sciences & Mathematics, Wabash College, 2009-2014. Chair, Department of Chemistry, Wabash College, 2006-2009. TEACHING EXPERIENCE Professor of Chemistry, Wabash College, 2009-present. Associate Professor of Chemistry, Wabash College, 2003-2009. Assistant Professor of Chemistry, Wabash College, 1998-2003 Visiting Assistant Professor, Whitman College, 1996-1998 Teaching Assistant, University of California at Davis, 1989-1993 RESEARCH EXPERIENCE Visiting Scientist, IBM Research – Watson Laboratory, Yorktown Heights NY, 6/04-6/07. Principal Investigator, Department of Chemistry, Wabash College, 7/98-present. Principal Investigator, Department of Chemistry, Whitman College, 9/96-7/98. 1 Staff Fellow, Center for Biologics Evaluation & Research (FDA laboratory at the National Institutes of Health), 2/94-8/96. Supervisor: Dr Richard Pastor, Biophysics Laboratory. Visiting Researcher, University of Leipzig, May 1996. Supervisor: Dr. Frank Volke, Department of Physics. Graduate Study, UCDavis, 1/90-12/93. Supervisor: Dr. D.A. McQuarrie, Department of Chemistry. Visiting Researcher, Universidad Autonoma Metropolitina-Iztapalapa (Mexico City), June-July 1992. Supervisor: Dr. Marcelo Lozada-Cassou, Department of Physics. -
THE ANNUAL MEETING of the SOCIETY the Forty-Eighth Annual
THE ANNUAL MEETING OF THE SOCIETY The forty-eighth Annual Meeting of the American Mathematical Society was held at Lehigh University, Bethlehem, Pennsylvania, from Monday, December 29 to Wednesday, December 31, 1941, in conjunction with meetings of the Mathematical Association of Amer ica, the Association for Symbolic Logic, and the National Council of Teachers of Mathematics. There were two general and seven sectional sessions of the Society at which three addresses and seventy-nine research papers (forty- four in person) were given. All sessions were held in Packard Labora tory. Arrangements for the meetings were made by a committee of which Dean Tomlinson Fort was chairman and Professors Everett Pitcher, G. E. Raynor, and W. M. Smith were the local members. Through the generosity of Lehigh University, rooms were available in the University dormitories. The attendance was about three hundred fifty including the follow ing two hundred fifty-six members of the Society: C. R. Adams, R. B. Adams, R. P. Agnew, Leon Alaoglu, C. B. Allendoerfer, H. A. Arnold, H. P. Atkins, Frank Ayres, H. M. Bacon, N. H. Ball, I. A. Barnett, F. S. Beale, A. A. Bennett, Stefan Bergman, A. H. Black, W. A. Blankinship, Salomon Bochner, H. F. Bohnenblust, J. W. Bower, C. B. Boyer, J. W. Bradshaw, C. C. Bramble, R. W. Brink, H. W. Brinkmann, F. L. Brooks, R. H. Bruck, N. R. Bryan. S. S. Cairns, W. D. Cairns, P. A. Caris, M. E. Carlen, I. S. Carroll, W. F. Cheney, Claude Chevalley, D. E. Christie, Alonzo Church, Randolph Church, R. F. Clippinger I. -
1. Introduction 1.1. A. Basic Biology of Membranes and Membrane Fusion. Biological Membranes Consist of Lipids and Proteins
1. Introduction 1.1. A. Basic biology of membranes and membrane fusion. Biological membranes consist of lipids and proteins, with the lipids self-organized into sheets and the proteins embedded into or bound to the sheets. The lipid sheets are arranged as a “bilayer,” two lipid monolayers with lipid acyl chains (i.e., hydrophobic tails) directly abutted against each other and sequestered from the aqueous solutions bathing the two sides of the membrane by the polar headgroups of the lipid molecules. The lipid bilayer membrane appeared early in evolution (1), and provides the barrier between interiors and exteriors of all eukaryotic (nucleus-containing) cells and their organelles. The architectural organization of the lipid bilayer is critical to life, and the functioning of proteins embedded in membranes is intrinsically connected to the bilayer structure in which they reside. The lipid bilayer also functions as an insulator for all activity within the body: the generation and propagation of action potentials in neurons and heart cells (2), and the voltage across mitochondrial membranes (i.e., batteries) that drives the production of ATP, the currency of cellular energy (3). Bilayer lipids provide extracellular (4) and intracellular molecules (5) that integrate the functioning of cells within body tissues. These and a host of other cellular functions rely on the integrity of the lipid bilayer structure (6). The bilayer membrane is a complex, dynamic structure. Its lipids are asymmetric in all directions, are in rapid motion, rotating, for example, 107 times/sec (7), and both the mass and electron density profiles of each lipid are heterogeneous along its length (1.5 – 2 nm) (8). -
Members of the American Academy of Arts and Sciences, 1780-2019 -- C
C Caballero, Ricardo J. (1959-) Cabot, Godfrey Lowell (1861-1962) Cabot, Philip (1872-1941) Election: 2010, Fellow Election: 1941, Fellow Election: 1936, Fellow Affiliation at election: Massachusetts Affiliation at election: Godfrey L. Cabot, Affiliation at election: Harvard University Institute of Technology Inc. Residence at election: Milton, MA Residence at election: Cambridge, MA Residence at election: Boston, MA Career description: Company executive; Career description: Economist; Educator Career description: Company executive Educator Current affiliation: Same (manufacturing and energy) Cabot, Richard Clarke (1868-1939) Cabezon, Jose I. (1956-) Cabot, James Elliot (1821-1903) Election: 1931, Fellow Election: 2019, Fellow Election: 1866, Fellow Affiliation at election: Harvard Medical Affiliation at election: University of Affiliation at election: Brookline, MA School California, Santa Barbara Residence at election: Brookline, MA Residence at election: Cambridge, MA Residence at election: Santa Barbara, CA Career description: Philosopher; Literary Career description: Physician; Educator; Career description: Religion scholar; editor Social worker Educator Current affiliation: Same Cabot, John Moors (1901-1981) Cabot, Samuel (1815-1885) Election: 1963, Fellow Election: 1844, Fellow Cabibbo, Nicola (1935-2010) Affiliation at election: U.S. Department of Affiliation at election: Boston, MA Election: 1981, FHM State Residence at election: Boston, MA Affiliation at election: Universita degli Residence at election: Washington, DC Career -
Pdf/1607.06691
Dynamics of Current, Charge and Mass Bob Eisenberg Department of Applied Mathematics Illinois Institute of Technology USA Department of Physiology and Biophysics Rush University USA [email protected] Xavier Oriols Departament d’Enginyeria Electrònica, Universitat Autònoma de Barcelona, SPAIN [email protected] David Ferry School of Electrical, Computer, and Energy Engineering Arizona State University USA [email protected] Available on arXivhttps://arxiv.org/abs/1708.07400 at September 8, 2017 ABSTRACT Electricity plays a special role in our lives and life. The dynamics of electrons allow light to flow through a vacuum. The equations of electron dynamics are nearly exact and apply from nuclear particles to stars. These Maxwell equations include a special term, the displacement current (of a vacuum). The displacement current allows electrical signals to propagate through space. Displacement current guarantees that current is exactly conserved from inside atoms to between stars, as long as current is defined as the entire source of the curl of the magnetic field, as Maxwell did. We show that the Bohm formulation of quantum mechanics allows the easy definition of current without the mysteries of the theory of quantum measurements. We show how conservation of current can be derived without mention of the polarization or dielectric properties of matter. We point out that displacement current is handled correctly in electrical engineering by ‘stray capacitances’, although it is rarely discussed explicitly. Matter does not behave as physicists of the 1800's thought it did. They could only measure on a time scale of seconds and tried to explain dielectric properties and polarization with a single dielectric constant, a real positive number independent of everything. -
Nber Working Paper Series of Mice and Academics
NBER WORKING PAPER SERIES OF MICE AND ACADEMICS: EXAMINING THE EFFECT OF OPENNESS ON INNOVATION Fiona Murray Philippe Aghion Mathias Dewatripont Julian Kolev Scott Stern Working Paper 14819 http://www.nber.org/papers/w14819 NATIONAL BUREAU OF ECONOMIC RESEARCH 1050 Massachusetts Avenue Cambridge, MA 02138 March 2009 The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research. NBER working papers are circulated for discussion and comment purposes. They have not been peer- reviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications. © 2009 by Fiona Murray, Philippe Aghion, Mathias Dewatripont, Julian Kolev, and Scott Stern. All rights reserved. Short sections of text, not to exceed two paragraphs, may be quoted without explicit permission provided that full credit, including © notice, is given to the source. Of Mice and Academics: Examining the Effect of Openness on Innovation Fiona Murray, Philippe Aghion, Mathias Dewatripont, Julian Kolev, and Scott Stern NBER Working Paper No. 14819 March 2009 JEL No. J30 ABSTRACT Scientific freedom and openness are hallmarks of academia: relative to their counterparts in industry, academics maintain discretion over their research agenda and allow others to build on their discoveries. This paper examines the relationship between openness and freedom, building on recent models emphasizing that, from an economic perspective, freedom is the granting of control rights to researchers. Within this framework, openness of upstream research does not simply encourage higher levels of downstream exploitation. It also raises the incentives for additional upstream research by encouraging the establishment of entirely new research directions. -
Assembling Life
ASSEMBLING LIFE. Models, the cell, and the reformations of biological science, 1920-1960 Max Stadler Centre for the History of Science, Technology and Medicine Imperial College, London University of London PhD dissertation 1 I certify that all the intellectual contents of this thesis are of my own, unless otherwise stated. London, October 2009 Max Stadler 2 Acknowledgments My thanks to: my friends and family; esp. my mother and Julia who didn't mind their son and brother becoming a not-so-useful member of society, helped me survive in the real world, and cheered me up when things ; my supervisor, Andrew Mendelsohn, for many hours of helping me sort out my thoughts and infinite levels of enthusiasm (and Germanisms-tolerance); my second supervisor, David Edgerton, for being the intellectual influence (I thought) he was; David Munns, despite his bad musical taste and humour, as a brother-in-arms against disciplines; Alex Oikonomou, for being a committed smoker; special thanks (I 'surmise') to Hermione Giffard, for making my out-of-the-suitcase life much easier, for opening my eyes in matters of Frank Whittle and machine tools, and for bothering to proof-read parts of this thesis; and thanks to all the rest of CHoSTM; thanks also, for taking time to read and respond to over-length drafts and chapters: Cornelius Borck; Stephen Casper; Michael Hagner; Rhodrie Hayward; Henning Schmidgen; Fabio de Sio; Sktili Sigurdsson; Pedro Ruiz Castell; Andrew Warwick; Abigail Woods; to Anne Harrington for having me at the History of Science Department, Harvard, and to Hans- Joerg Rheinberger for having me at the Max-Planck-Institute for the History of Science in Berlin; thanks, finally, to all those who in some way or another encouraged, accompanied and/or enabled the creation and completion of this thing, especially: whoever invented the internet; Hanna Rose Shell; and the Hans Rausing Fund. -
SOME PIONEERS of the APPLICATIONS of FRACTIONAL CALCULUS Duarte Valério, José Tenreiro Machado, Virginia Kiryakova
SOME PIONEERS OF THE APPLICATIONS OF FRACTIONAL CALCULUS Duarte Val´erio, Jos´e Tenreiro Machado, Virginia Kiryakova Abstract In the last decades fractional calculus (FC) became an area of intensive research and development. This paper goes back and recalls important pio- neers that started to apply FC to scientific and engineering problems during the nineteenth and twentieth centuries. Those we present are, in alphabet- ical order: Niels Abel, Kenneth and Robert Cole, Andrew Gemant, Andrey N. Gerasimov, Oliver Heaviside, Paul L´evy, Rashid Sh. Nigmatullin, Yuri N. Rabotnov, George Scott Blair. Key Words and Phrases Fractional calculus, applications, pioneers, Abel, Cole, Gemant, Gerasimov, Heaviside, L´evy, Nigmatullin, Rabotnov, Scott Blair 1. Introduction In 1695 Gottfried Leibniz asked Guillaume l’Hˆopital if the (integer) order of derivatives and integrals could be extended. Was it possible if the order was some irrational, fractional or complex number? “Dream commands life” and this idea motivated many mathematicians, physicists and engineers to develop the concept of fractional calculus (FC). Dur- ing four centuries many famous mathematicians contributed to the theo- retical development of FC. We can list (in alphabetical order) some im- portant researchers since 1695 (see details at [1, 2, 3], and posters at http://www.math.bas.bg/∼fcaa): • Abel, Niels Henrik (5 August 1802 - 6 April 1829), Norwegian math- ematician • Al-Bassam, M. A. (20th century), mathematician of Iraqi origin • Cole, Kenneth (1900 - 1984) and Robert (1914 - 1990), American physicists • Cossar, James (d. 24 July 1998), British mathematician • Davis, Harold Thayer (5 October 1892 - 14 November 1974), Amer- ican mathematician • Djrbashjan, Mkhitar Mkrtichevich (11 September 1918 - 6 May 1994), Armenian (also Soviet Union) mathematician; family name transcripted also as Dzhrbashian, Jerbashian; short CV can be found in Fract. -
Curriculum Vitae: Thomas E
June 12, 2018 Curriculum Vitae: Thomas E. DeCoursey {Blue = has not happened yet} Personal Married to: Carolyn Garver DeCoursey Children: Audrey G. DeCoursey, Jillian Z. DeCoursey Home: 833 S. Scoville, Oak Park, Illinois 60304-1408 Phone: (708) 524-8324 Professional Address: Department of Physiology & Biophysics Rush University Medical Center 1750 West Harrison Street Chicago, Illinois 60612-3824 Phone: (312) 942-3267 FAX (Dept.): (312) 942-8711 E-mail: [email protected] url: http://www2.phys.rush.edu/TomD/physiotd.html ORCID iD: 0000-0002-4263-180X Alter ego: Captain Proton Education Manchester College, Indiana 1969-1971 Georg-August-Universität Göttingen, W. Germany 1971-1972 McPherson College, Kansas (B.A.) 1972-1974 Biology. Valedictorian, summa cum laude University of Cincinnati, Ohio (Ph.D.) 1974-1979 Pharmacology and Cell Biophysics Sodium currents in normal and myotonic muscle fibers. 1979. Advisor: Shirley H. Bryant Postdoctoral Training 1980-1981 Otto F. Hutter, Institute of Physiology, University of Glasgow, Glasgow, Scotland, U.K. 1982-1985 Michael D. Cahalan, Department of Physiology & Biophysics, University of California, Irvine, California Positions 1985-1990. Assistant Professor, Department of Physiology, Rush Presbyterian St. Luke's Medical Center, Chicago, Illinois 1987-present. Co-director, Patch Clamp Center, Rush University Medical Center, Chicago, Illinois 1990-1998. Associate Professor, Department of Physiology/Molecular Biophysics and Physiology, Rush Presbyterian St. Luke's Medical Center, Chicago, Illinois 1998-2016. Professor, Department of Molecular Biophysics and Physiology, Rush University Medical Center, Chicago, Illinois 2017-present. Professor, Department of Physiology & Biophysics, Rush University, Chicago, Illinois 1 June 12, 2018 Honors, Fellowships, etc. Valedictorian, summa cum laude, McPherson College (1974) Fellow of the Albert J.