Henry Eyring: a Model Life K.A
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Jean-Baptiste Charles Joseph Bélanger (1790-1874), the Backwater Equation and the Bélanger Equation
THE UNIVERSITY OF QUEENSLAND DIVISION OF CIVIL ENGINEERING REPORT CH69/08 JEAN-BAPTISTE CHARLES JOSEPH BÉLANGER (1790-1874), THE BACKWATER EQUATION AND THE BÉLANGER EQUATION AUTHOR: Hubert CHANSON HYDRAULIC MODEL REPORTS This report is published by the Division of Civil Engineering at the University of Queensland. Lists of recently-published titles of this series and of other publications are provided at the end of this report. Requests for copies of any of these documents should be addressed to the Civil Engineering Secretary. The interpretation and opinions expressed herein are solely those of the author(s). Considerable care has been taken to ensure accuracy of the material presented. Nevertheless, responsibility for the use of this material rests with the user. Division of Civil Engineering The University of Queensland Brisbane QLD 4072 AUSTRALIA Telephone: (61 7) 3365 3619 Fax: (61 7) 3365 4599 URL: http://www.eng.uq.edu.au/civil/ First published in 2008 by Division of Civil Engineering The University of Queensland, Brisbane QLD 4072, Australia © Chanson This book is copyright ISBN No. 9781864999211 The University of Queensland, St Lucia QLD JEAN-BAPTISTE CHARLES JOSEPH BÉLANGER (1790-1874), THE BACKWATER EQUATION AND THE BÉLANGER EQUATION by Hubert CHANSON Professor, Division of Civil Engineering, School of Engineering, The University of Queensland, Brisbane QLD 4072, Australia Ph.: (61 7) 3365 3619, Fax: (61 7) 3365 4599, Email: [email protected] Url: http://www.uq.edu.au/~e2hchans/ REPORT No. CH69/08 ISBN 9781864999211 Division of Civil Engineering, The University of Queensland August 2008 Jean-Baptiste BÉLANGER (1790-1874) (Courtesy of the Bibliothèque de l'Ecole Nationale Supérieure des Ponts et Chaussées) Abstract In an open channel, the transition from a high-velocity open channel flow to a fluvial motion is a flow singularity called a hydraulic jump. -
The Practice of Chemistry Education (Paper)
CHEMISTRY EDUCATION: THE PRACTICE OF CHEMISTRY EDUCATION RESEARCH AND PRACTICE (PAPER) 2004, Vol. 5, No. 1, pp. 69-87 Concept teaching and learning/ History and philosophy of science (HPS) Juan QUÍLEZ IES José Ballester, Departamento de Física y Química, Valencia (Spain) A HISTORICAL APPROACH TO THE DEVELOPMENT OF CHEMICAL EQUILIBRIUM THROUGH THE EVOLUTION OF THE AFFINITY CONCEPT: SOME EDUCATIONAL SUGGESTIONS Received 20 September 2003; revised 11 February 2004; in final form/accepted 20 February 2004 ABSTRACT: Three basic ideas should be considered when teaching and learning chemical equilibrium: incomplete reaction, reversibility and dynamics. In this study, we concentrate on how these three ideas have eventually defined the chemical equilibrium concept. To this end, we analyse the contexts of scientific inquiry that have allowed the growth of chemical equilibrium from the first ideas of chemical affinity. At the beginning of the 18th century, chemists began the construction of different affinity tables, based on the concept of elective affinities. Berthollet reworked this idea, considering that the amount of the substances involved in a reaction was a key factor accounting for the chemical forces. Guldberg and Waage attempted to measure those forces, formulating the first affinity mathematical equations. Finally, the first ideas providing a molecular interpretation of the macroscopic properties of equilibrium reactions were presented. The historical approach of the first key ideas may serve as a basis for an appropriate sequencing of -
Edward M. Eyring
The Chemistry Department 1946-2000 Written by: Edward M. Eyring Assisted by: April K. Heiselt & Kelly Erickson Henry Eyring and the Birth of a Graduate Program In January 1946, Dr. A. Ray Olpin, a physicist, took command of the University of Utah. He recruited a number of senior people to his administration who also became faculty members in various academic departments. Two of these administrators were chemists: Henry Eyring, a professor at Princeton University, and Carl J. Christensen, a research scientist at Bell Laboratories. In the year 2000, the Chemistry Department attempts to hire a distinguished senior faculty member by inviting him or her to teach a short course for several weeks as a visiting professor. The distinguished visitor gets the opportunity to become acquainted with the department and some of the aspects of Utah (skiing, national parks, geodes, etc.) and the faculty discover whether the visitor is someone they can live with. The hiring of Henry Eyring did not fit this mold because he was sought first and foremost to beef up the graduate program for the entire University rather than just to be a faculty member in the Chemistry Department. Had the Chemistry Department refused to accept Henry Eyring as a full professor, he probably would have been accepted by the Metallurgy Department, where he had a courtesy faculty appointment for many years. Sometime in early 1946, President Olpin visited Princeton, NJ, and offered Henry a position as the Dean of the Graduate School at the University of Utah. Henry was in his scientific heyday having published two influential textbooks (Samuel Glasstone, Keith J. -
The History of the Concept of Element, with Particular Reference to Humphry Davy
The Physical Sciences Initiative The history of the concept of element, with particular reference to Humphry Davy One of the problems highlighted when the recently implemented chemistry syllabus was being developed was the difficulty caused by starting the teaching of the course with atoms. The new syllabus offers a possible alternative teaching order that starts at the macroscopic level, and deals with elements. If this is done, the history of the idea of elements is dealt with at a very early stage. The concept of element originated with the ancient Greeks, notably Empedocles, who around 450 BC defined elements as the basic building blocks from which all other materials are made. He stated that there were four elements: earth, air, fire and water. Substances were said to change when elements break apart and recombine under the action of the forces of strife and love. Little progress was made in this area until the seventeenth century AD. The fruitless attempts of the alchemists to change base metals such as lead into gold and to find the “elixir of life” held back progress, although much chemical knowledge and expertise was gained. In 1661, 1 The Physical Sciences Initiative The Physical Sciences Initiative Robert Boyle defined an element as a substance that cannot be broken down into simpler materials. He cast doubt on the Greek elements, and provided a criterion for showing that a material was not an element. Robert Boyle Many elements were discovered during the next 100 years, but progress was delayed by the phlogiston hypothesis. According to this hypothesis, when a substance was burned it lost a substance called phlogiston to the air. -
Alumni Newsletter
ALUMNI NEWSLETTER SCHOOL OF CHEMICAL SCIENCES UNIVERSITY OF ILLINOIS at Urbana-Champaign NO. 11, WINTER 1976-77 The State of the Union (Comments by H. S. Gutowsky, director of the School of Chemical Sciences) Following the tradition of the last three issues of the Alumni Newsletter, I have put together a synopsis of some selected material that appears in much more detail in the 1975-76 Annual Report of the School of Chemical Sci ences and is not covered elsewhere in this issue. If you would like more details, let me know and I will be happy to forward you a copy of the com plete annual report. Instructional Program Two steps were taken dw·ing the past year to address the fact that 75 per cent or more of our chemistry graduates take positions in industry without learning much in their programs about the nature of industrial careers. Professor Peter Beak organized a special topics course, Chemistry 433, Re search in Industry, given in the fall semester. Early in the course, Dr. J. K. Stille from the University of Iowa presented a series of ten lectures on the fundamentals of industrial and polymer chemistry. This was followed by eleven weekly lectures from industrial speakers active in chemical roles. The program attracted a good deal of interest among our students and staff and its beneficial effects were visible to industrial recruiters interviewing here near its end. The second step was the inauguration of a cooperative program with Monsanto Company (St. Louis) for the summer employment of graduate students. Three entering graduate students participated in the summer of 1976, and it is hoped to extend the program to a larger number of students (and other companies) as well as to faculty next summer. -
Ficción Televisiva Y Modelos De Negocio En La Era Digital En El Uruguay
UNIVERSIDAD DE LA REPÚBLICA ORIENTAL DEL URUGUAY FACULTAD DE CIENCIAS ECONÓMICAS Y DE ADMINISTRACIÓN Tesis para optar al título de Licenciado en Economía FICCIÓN TELEVISIVA Y MODELOS DE NEGOCIO EN LA ERA DIGITAL EN EL URUGUAY Autoras: ANA JOSEFINA MAROTTA MESTRE MARÍA FERNANDA OSORIO LAENZ Tutor: Ec. GUSTAVO BUQUET Montevideo, Uruguay 2011 i PÁGINA DE APROBACIÓN FACULTAD DE CIENCIAS ECONÓMICAS Y DE ADMINISTRACIÓN El tribunal docente integrado por los abajo firmantes aprueba la Tesis de Investigación: Título ....................................................................................................................... ....................................................................................................................... Autor/s ....................................................................................................................... ....................................................................................................................... Tutor ....................................................................................................................... Carrera ....................................................................................................................... Puntaje ....................................................................................................................... Tribunal Profesor..............................................................................(Nombre y firma) Profesor..............................................................................(Nombre -
William Albert Noyes
NATIONAL ACADEMY OF SCIENCES WILLIAM ALBERT NOYES 1857—1941 A Biographical Memoir by ROGER ADAMS 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. Biographical Memoir COPYRIGHT 1952 NATIONAL ACADEMY OF SCIENCES WASHINGTON D.C. WILLIAM ALBERT NOYES1 BY ROGER ADAMS William Albert Noyes was born November 6, 1857 on a farm near Independence, Iowa. He was the seventh generation of the Noyes family in America, being descended from Nicholas Noyes who came with his elder brother, James, from Choulder- ton, Wiltshire, in 1633. Their father had been a clergyman but had died before the sons left England. The two brothers settled first in Medford, Massachusetts but in 1655 moved to Newbury. Samuel, of the third generation in this direct line, moved to Abington about 1713 and there he and the succeeding generations lived for over one hundred and forty years. Spencer W. Noyes, the great grandson of Samuel, was ad- mitted as a student to Phillips Academy at Andover, Massachu- setts, March 21, 1837. He married Mary Packard-related to the famous family of shoe manufacturers-and they had three children when they left: Abington and migrated to Iowa in 185j. When the father with his family went west to open up a home- stead, he found conditions typical of the prairies and life was necessarily primitive. In the east he had been a cobbler by trade so had had little experience working the land. The early years were difficult ones because of the hard work in establishing a farm home, getting land into cultivation, raising food and storing sufficient for winter needs. -
Los Formatos No Convencionales Y La Transformación Del Negocio Publicitario En La Televisión
Los formatos no convencionales y la transformación del negocio publicitario en la televisión Josep Fernández Cavia A partir de la investigación realizada en la Universidad de teléfono móvil, mensajes cortos u otros mecanismos; Rovira i Virgili sobre los formatos publicitarios no conven- • si estas formas de publicidad no convencional se in- cionales en la televisión generalista, se desarrollaron unas tegran o no dentro de los programas, de forma que la inferencias que afectan de manera directa a la forma como separación, defendida por la normativa, entre publicidad están reinterpretando el negocio publicitario en la televisión y otros contenidos fuera clara; los agentes que participan de él. Hablamos de operadores • el fenómeno de mezcla de formatos para mejorar la e- de televisión, de productoras audiovisuales, de centrales ficacia y establecer sinergias entre varios canales de de medios –que desde hace poco reivindican la denomina- comunicación. ción de agencias de medios–, de agencias de publicidad, de empresas anunciantes y también, claro está, de los es- Interactividad pectadores/consumidores. Empezando por la interactividad, debemos decir que ésta Pero antes de exponer estas reflexiones nos referiremos a aparece ya en la misma autopromoción, como es el caso, tres fenómenos que marcan directamente las tendencias por ejemplo, del K3/33, que en sus programas infantiles y el alcance de dicha transformación. Al final del artículo remite a menudo a las webs relacionadas con la cadena, abordaremos, como ejemplo, un caso concreto: la utiliza- como en el caso del Club Super3 o del 3xl.net. Debe ción de los formatos de publicidad no convencional para tenerse en cuenta, en este sentido, la gran presencia de dirigirse al público infantil. -
The Rare Earths II
Redis co very of the Elements The Ra re Earth s–The Con fusing Years I A gallery of rare earth scientists and a timeline of their research I I James L. Marshall, Beta Eta 1971 , and Virginia R. Marshall, Beta Eta 2003 , Department of Chemistry, University of North Texas, Denton, TX 76203-5070, [email protected] The rare earths after Mosander. In the pre - vi ou s HEXAGON “Rediscovery” article, 1p we were introduced to the 17 rare earths, found in the f-block and the Group III chemical family of Figure 1. Important scientists dealing with rare earths through the nineteenth century. Johan Gadolin the Periodic Table. Because of a common (1760 –1852) 1g —discovered yttrium (1794). Jöns Jacob Berzelius (1779 –1848) and Martin Heinrich valence electron configuration, the rare earths Klaproth (1743 –1817) 1d —discovered cerium (1803). Carl Gustaf Mosander (1787 –1858) 1p —discovered have similar chemical properties, and their lanthanum (1839), didymium (1840), terbium, and erbium (1843). Jean-Charles deGalissard Marignac chemical separation from one another can be (1817 –1894) 1o —discovered ytterbium (1878) and gadolinium (1880). Per Teodor Cleve (1840 –1905) 1n — difficult. From preparations of the first two rare discovered holmium and thulium (1879). Lars Fredrik Nilson (1840 –1899) 1n —discovered scandium earth element s—yttrium and ceriu m—the (1879). Paul-Émile Lecoq de Boisbaudran (1838 –1912) —discovered samarium (1879) and dysprosium Swedish chemist Carl Gustaf Mosander (Figure (1886). 1b Carl Auer von Welsbach (1858 –1929) 1c —discovered praseodymium and neodymium (1885); 1, 2) was able to separate four additional ele - co-discovered lutetium (1907). -
Sterns Lebensdaten Und Chronologie Seines Wirkens
Sterns Lebensdaten und Chronologie seines Wirkens Diese Chronologie von Otto Sterns Wirken basiert auf folgenden Quellen: 1. Otto Sterns selbst verfassten Lebensläufen, 2. Sterns Briefen und Sterns Publikationen, 3. Sterns Reisepässen 4. Sterns Züricher Interview 1961 5. Dokumenten der Hochschularchive (17.2.1888 bis 17.8.1969) 1888 Geb. 17.2.1888 als Otto Stern in Sohrau/Oberschlesien In allen Lebensläufen und Dokumenten findet man immer nur den VornamenOt- to. Im polizeilichen Führungszeugnis ausgestellt am 12.7.1912 vom königlichen Polizeipräsidium Abt. IV in Breslau wird bei Stern ebenfalls nur der Vorname Otto erwähnt. Nur im Emeritierungsdokument des Carnegie Institutes of Tech- nology wird ein zweiter Vorname Otto M. Stern erwähnt. Vater: Mühlenbesitzer Oskar Stern (*1850–1919) und Mutter Eugenie Stern geb. Rosenthal (*1863–1907) Nach Angabe von Diana Templeton-Killan, der Enkeltochter von Berta Kamm und somit Großnichte von Otto Stern (E-Mail vom 3.12.2015 an Horst Schmidt- Böcking) war Ottos Großvater Abraham Stern. Abraham hatte 5 Kinder mit seiner ersten Frau Nanni Freund. Nanni starb kurz nach der Geburt des fünften Kindes. Bald danach heiratete Abraham Berta Ben- der, mit der er 6 weitere Kinder hatte. Ottos Vater Oskar war das dritte Kind von Berta. Abraham und Nannis erstes Kind war Heinrich Stern (1833–1908). Heinrich hatte 4 Kinder. Das erste Kind war Richard Stern (1865–1911), der Toni Asch © Springer-Verlag GmbH Deutschland 2018 325 H. Schmidt-Böcking, A. Templeton, W. Trageser (Hrsg.), Otto Sterns gesammelte Briefe – Band 1, https://doi.org/10.1007/978-3-662-55735-8 326 Sterns Lebensdaten und Chronologie seines Wirkens heiratete. -
Charles Fréderic Gerhardt Jaime Wisniak
PARA QUITARLE EL POLVO La química en la historia, para la enseñanza Charles Fréderic Gerhardt Jaime Wisniak Resumen Charles-Victor Lobstein (1809-1863). Samuel Ger- Charles Fréderic Gerhardt (1816-1856) fue uno de los hardt, born in Switzerland, came from a well-known químicos más importantes del siglo diecinueve, cu - family of brewers. At a young age he moved to yas investigaciones y teorías ejercieron una poderosa Strasbourg where he found employment in the influencia en el desarrollo de la química. Su teoría Turckheim bank and married. His skills led to a fast de los tipos fue significativa en impulsar hacia ade- career and thus to provide his family with a prosper- lante la clasificación orgánica, poniéndola en una ous and cultured home. forma más racional, y en destronar el enfoque dua - Between 1824 and 1831 Charles attended the lista. La teoría de los tipos evolucionó hacia la idea local Gymnase Protestant, an institution controlled by de valencia. Gerhardt generalizó el concepto de the Lutheran Augsburg Confession. According to homología y equivalentes. Fue asimismo responsa- Carneiro (1993) the Gymnasium had been founded ble de la síntesis de un gran número de compuestos in 1538 by Jean Sturm (1507-1589), a German Lu - orgánicos, entre ellos anhidridos y cloruros de ácido, theran reformed who advocated and practiced the derivados del ácido salicílico, anilidas, y fosfamidas. propagation of knowledge through teaching and publication. This institution was highly regarded in Abstract the educational circle; it had resisted several at- Charles Fréderic Gerhardt (1816-1856) was one of tempts by the Ministry of Instruction to integrate it the most important chemists of the nineteenth cen- into the official Lycée program, particularly after the tury and whose researches and theories exerted a anti clerical atmosphere that was prevalent after powerful influence in the development of chemistry. -
Redalyc.Joseph Achille Le Bel. His Life and Works
Revista CENIC. Ciencias Químicas ISSN: 1015-8553 [email protected] Centro Nacional de Investigaciones Científicas Cuba Wisniak, Jaime Joseph Achille Le Bel. His Life and Works Revista CENIC. Ciencias Químicas, vol. 33, núm. 1, enero-abril, 2002, pp. 35-43 Centro Nacional de Investigaciones Científicas La Habana, Cuba Available in: http://www.redalyc.org/articulo.oa?id=181625999008 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Revista CENIC Ciencias Químicas, Vol. 33, No. 1, 2002. RESEÑA BIOGRAFICA Joseph Achille Le Bel. His Life and Works Jaime Wisniak Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer-Sheva, Israel 84105. [email protected]. Recibido: 26 de abril del 2001. Aceptado: 22 de mayo del 2001. Palabras clave: Le Bel, Química, estereoquímica, actividad óptica, cosmogonia Key words: Le Bel, Chemistry, stereoquímica, optical activity, cosmogony. RESUMEN. Joseph Achille Le Bel es un ejemplo de científicos como Réaumur The same year his father passed que investigaron muchÍsimos temas, pero solo son recordados por uno. Le Bel away and his two sisters, Marie and es un nombre bien conocido por los estudiantes de Química en general, y Emma, took charge of the family in- estereoquímica en particular. El nos dejo los principios básicos que determinan dustry and in this way allowed Le las condiciones geométricas que un compuesto de carbón debe satisfacer para Bel to continue chemical studies.