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Articles 1 - 21 of 21
Full-Text Articles in History
Dynastic Egypt Dating Using Short Lived Plants, David A. Lightfoot
Dynastic Egypt Dating Using Short Lived Plants, David A. Lightfoot
David A. Lightfoot
No abstract provided.
Argument Map: Loewi's Argument That Neuro-Transmission Works With Chemical Signals Instead Of Eletrical (Short Version), Michael Hoffmann
Argument Map: Loewi's Argument That Neuro-Transmission Works With Chemical Signals Instead Of Eletrical (Short Version), Michael Hoffmann
Michael H.G. Hoffmann
This argument shows how the hypothesis that muscles are probably stimulated exclusively by chemical signals and not by electrical ones can be justified by Loewi's experimentum crucis.
Argument Map: Devoloping Scientific Hypotheses And Experimental Designs In Form Of An Argumentation. Loewi's Crucial Experiment On Chemical Neurotransmission, Michael Hoffmann
Argument Map: Devoloping Scientific Hypotheses And Experimental Designs In Form Of An Argumentation. Loewi's Crucial Experiment On Chemical Neurotransmission, Michael Hoffmann
Michael H.G. Hoffmann
This argument map presents Paul Loewi’s crucial experiment in which he showed that neural transmissions of signals are chemical in nature, not electrical, in form of an argumentation. The map can be used in science education to show how the formulation of hypotheses should be related to a corresponding determination of experimental designs.
Travelling In Cuba, Fathi Habashi
Travelling In Cuba, Fathi Habashi
Fathi Habashi
Contact with Cuban scientists was established in 1986 when two researchers from Centro de Investigaciones para Industria Minero Metalurgica in Havana visited Laval University to get acquainted with research activities in the area of extractive metallurgy. This was followed in early 1987 by two more researchers from the same centre. Invitations were then received in late 1987, 1989, and 2008 to visit the nickel refineries in Cuba and to hold seminars at the University of Havana. The present report outlines these activities.
Pyrite. History, Chemistry, And Metallurgy, Fathi Habashi
Pyrite. History, Chemistry, And Metallurgy, Fathi Habashi
Fathi Habashi
The Book covers the history of pyrite - - how it was a strategic mineral necessary for the production of elemental sulfur needed for making gunpowder for military purposes and for the production of SO2 needed for making sulfuric acid for the chemical industry. Now its presence is a nuisance in tailings ponds. The book also covers the processing of pyrite containing gold, its chemistry and technology, the processing of pyrite cinder for the production of a variety of metals, and its behaviour towards autotrophic microorganisms.
Labor Unions And Climate Change, Jon Foster
Labor Unions And Climate Change, Jon Foster
Jon Foster
The challenge of climate change and the need for a shift to more ecologically sustainable methods of production and innovation can dramatically redefine the strategy and objectives of the labor movement as a whole. Furthermore, within the specific sectors of: Agriculture, Construction, Utilities, and Automobiles, the reality of a changing environment, and social views, has already begun redefining what the future of these industries will mean in relation to labor unions.
Metalurgia Extractiva Y Política Nacional, Fathi Habashi
Metalurgia Extractiva Y Política Nacional, Fathi Habashi
Fathi Habashi
Should a country export its mineral wealth in form of concentrates or should it locally treat its ores to produce metals as final products? In the past centuries pyrometallurgy was the only route to extract metals from ores and this required a large capital investment many countries could not afford to raise. This situation encouraged marketing of concentrates. Today, metallurgists have the option to use the hydrometallurgical route to process ores and concentrates at a reasonable capital investment. This opened the way to the possibility of processing ores locally. When need arises to increase production new units can be added …
Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi
Leaching Mechanism Of Semiconducting Minerals, Fathi Habashi
Fathi Habashi
The mechanism of leaching of semiconducting minerals such as PbS, ZnS, UO2, etc., has been the subject of intensive speculation by hydrometallurgists in the early 1950s. The electrochemical mechanism proposed in 1970 by the author in volume 2 of his Principles of Extractive Metallurgy avoids the assumption of forming intermediate complexes that cannot be isolated or identified.
Metals: Typical And Less Typical, Transition And Inner Transition, Fathi Habashi
Metals: Typical And Less Typical, Transition And Inner Transition, Fathi Habashi
Fathi Habashi
While most chemists agree on what is a metal and what is a non-metal there is a disagreement with respect to what is a metalloid and what is a transition metal. It is believed that this problem can be solved if two new terms are adopted: typical and less typical metals. These new terms will also help reconcile the European Periodic Table versus the North American regarding numbering of groups as well as the IUPAC numbering which could be as well abandoned in favour of group names as will be shown in the manuscript.
Phosphate Industry And The Radon Problem, Fathi Habashi
Phosphate Industry And The Radon Problem, Fathi Habashi
Fathi Habashi
The problem of radon generated during the treatment of phosphate rock by sulfuric acid to produce fertilizers can be solved by using nitric acid. In this case radium, which is the source of radon, goes into solution and can be precipitated by a controlled method and safely disposed of. A variety of options are discussed. Text in Farsi with English translation.
Aqua Science Through The Ages. An Illustrated History Of Water, Fathi Habashi
Aqua Science Through The Ages. An Illustrated History Of Water, Fathi Habashi
Fathi Habashi
Water a component of the Four Elements considered by the ancient philosophers as essential for survival, played, and is still playing an essential role in society. Great civilizations in ancient times developed along great rivers. The ancient peoples knew how to manage water supplies by digging canals, controlling floods, and using water for irrigation. They designed equipment that used water to measure the time, to determine the density of solids, to fight fires, and to create vacuum. Modern engineers exploited water flow to design and construct huge hydroelectric power stations. Waterways and navigation systems were also an essential element for …
Chemistry And Metallurgy In The Great Empires, Fathi Habashi
Chemistry And Metallurgy In The Great Empires, Fathi Habashi
Fathi Habashi
It is remarkable that certain countries expand to become great empires then as time goes by they gradually decline while others rise. This book attempts to briefly trace the history of chemistry and metallurgy through the different empires that became at one time great and then faded away. In 272 pages 21.5 x 28 cm, the author outlines the inter-relation of chemistry, metallurgy, mining, and medicine, the idea of the divinity of kings and the formation of nations, and finally the rise and fall of the empires. He then covers the ancient and medieval empires, followed by the empires from …
Science, Technology, And Society, Fathi Habashi
Science, Technology, And Society, Fathi Habashi
Fathi Habashi
Science, technology, and society is a vast and complex question. It is discussed here from five points: social responsibility of scientists, migration and movement of scholars, philanthropy and its role in education and culture, enlightened despots and their influence on science and culture, and finally the social aspects of mining. The book is meant for the general reader but can benefit scientists as well. It is fully illustrated with colored pictures. It is hoped that it will serve as an introduction to this field to the young generation and inspire them to serve society.
Quelques Conseils À Nos Nouveau Diplomés, Fathi Habashi
Quelques Conseils À Nos Nouveau Diplomés, Fathi Habashi
Fathi Habashi
An advice, the old wise man Polonius offered to the young Hamlet was “Neither a borrower, nor a lender be”, may be no longer pertinent. Some more relevant advices are offered to new graduates of the twentieth century. Available in English, French, and Spanish
From Alchemy To Atomic Bombs. Book Review By George Kauffman, Fathi Habashi
From Alchemy To Atomic Bombs. Book Review By George Kauffman, Fathi Habashi
Fathi Habashi
Review of the book "From Alchemy to Atomic Bombs" by Fathi Habashi published by Métallurgie Extractive Québec. The review is written by Professor George Kauffman at California State University, Fresno.
El Laboratorio De Cádiz Del Instituto De Investigaciones Pesqueras : ”Arena” Investigadora Del Csic Entre 1957 Y 1966., Enrique Wulff
El Laboratorio De Cádiz Del Instituto De Investigaciones Pesqueras : ”Arena” Investigadora Del Csic Entre 1957 Y 1966., Enrique Wulff
Enrique Wulff
The aim of this communication is to detail some main images projected by CSIC from its laboratuory in Cádiz, as critical information points from the past. 1957-1966 is the studied period, its fondational time. The indexation of the scientific problems related with the activity of the laboratory makes use of the calculation of transition probabilities. Catch percentages and bathymetric distributions are emoployed to approach the structure of the oceanographic campaigns results. The quantitative enumeration of observed organs and mathematical procedures provide information on the observations in the tunny fisheries. Multivariant bibliometry (factorial and cluster analysis, multiple regression) , and coauthor …
Hadhramaut And The Hadhrami Diaspora: Problems In Theoretical History, Syed Farid Alatas
Hadhramaut And The Hadhrami Diaspora: Problems In Theoretical History, Syed Farid Alatas
farid alatas
If we understand history as a field constituted by a type of research and inquiry that concerns itself with human action in the past and is based on the interpretation of evidence, regardless of whether positivist or interpretive methods are used, then it can be said that historical works on Hadhramaut and its diaspora have been written. These works can be divided in broad terms into the two general categories of Arab and Western historiography. Nevertheless, in both cases, owing to certain theoret- ical problems that have beset these works, little progress has been made in the advancement of Hadhrami …
A Memorable Meeting, February 1994, Fathi Habashi
A Memorable Meeting, February 1994, Fathi Habashi
Fathi Habashi
Decision taken at the Steering Committee Meeting of the International Mineral Processing Congress in San Francisco February 1994 to name the IMPC Award.
Functional Explanation And Metaphysical Individualism, Justin Schwartz
Functional Explanation And Metaphysical Individualism, Justin Schwartz
Justin Schwartz
A number of (present or former) analytical Marxists, such as Jon Elster, have argued that functional explanation has almost no place in the social sciences. (Although the discussion is framed in terms of a debate among analytical Marxists, the point is quite general, and Marxism is used for illustrative purposes.) Functional explanation accounts for what is to be explained by reference to its function; thus, sighted organism have eyes because eyes enable them to see. Elster and other critics of functional explanation argue that this pattern of explanation is inconsistent with "methodological individualism," the idea, as they understand it, that …
Hidrometalurjide Yeni, Fathi Habashi
Hidrometalurjide Yeni, Fathi Habashi
Fathi Habashi
Turkish translation of F. Habashi, “Recent Advances in Hydrometallurgy,” Proceedings International Mineral Processing Congress, Warsaw, 1979, edited by J. Laskowski, published by Elsevier, pp. 902–935
Progress In Extractive Metallurgy, Volume 1. Review By G.N. Dobrokhotov, Fathi Habashi
Progress In Extractive Metallurgy, Volume 1. Review By G.N. Dobrokhotov, Fathi Habashi
Fathi Habashi
Review of the first volume of Progress in Extractive Metallurgy edited by Fathi Habashi and published by Gordon & Breach in New York in 1975. The review was written by Professor Dobrokhotov at the Leningrad Mining Institute.