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Articles 78241 - 78270 of 78723
Full-Text Articles in Entire DC Network
Space Journal, Vol. 2, No. 2, December 1959, Space Enterprises, Inc.
Space Journal, Vol. 2, No. 2, December 1959, Space Enterprises, Inc.
Space Journal
No abstract provided.
Washington Report, Space Enterprises, Inc.
Roy Marquart, The Ramjet Man, Lois Philmus
A Search For The Space Man's Food, Robert G. Tischer
A Search For The Space Man's Food, Robert G. Tischer
Space Journal
No abstract provided.
Primitive Fear, John Hulley
Atlas Missile, Space Enterprises, Inc.
New Products, Space Enterprises, Inc.
Reaction-Letters, Space Enterprises, Inc.
Space And The Law, Menachem Sheffy
Books, Space Enterprises, Inc.
Back Matter, Space Enterprises, Inc.
Information Free/Men Of Science, Space Enterprises, Inc.
Information Free/Men Of Science, Space Enterprises, Inc.
Space Journal
No abstract provided.
Futureman, Norm Lynott
Space Books, Space Enterprises, Inc.
Green Mountain Proving Ground: Gateway To Tomorrow, G Harry Stine
Green Mountain Proving Ground: Gateway To Tomorrow, G Harry Stine
Space Journal
No abstract provided.
Space Journal, Vol. 2, No. 1, September 1959, Space Enterprises, Inc.
Space Journal, Vol. 2, No. 1, September 1959, Space Enterprises, Inc.
Space Journal
No abstract provided.
Space Exploration And The Value Of Man, Donald N. Michael
Space Exploration And The Value Of Man, Donald N. Michael
Space Journal
No abstract provided.
Does The Moon Possess A Magnetic Field?, Zdenek Kopal
Does The Moon Possess A Magnetic Field?, Zdenek Kopal
Space Journal
No abstract provided.
Meteorites, Space Enterprises, Inc.
Is Time The Missing Link?, Helmut Hoepnner, B Spencer Isbell
Is Time The Missing Link?, Helmut Hoepnner, B Spencer Isbell
Space Journal
No abstract provided.
Time For A Change/Project Able And Baker, Douglass B. Spears Jr., Space Enterprises, Inc.
Time For A Change/Project Able And Baker, Douglass B. Spears Jr., Space Enterprises, Inc.
Space Journal
No abstract provided.
Front Matter, Space Enterprises, Inc.
Reaction, Space Enterprises, Inc.
Thrust Control Of Solid Propellant Motors, Harold W. Ritchey
Thrust Control Of Solid Propellant Motors, Harold W. Ritchey
Space Journal
No abstract provided.
Back Matter, Space Enterprises, Inc.
Alkylation With Some Alkyl Borate By The Friedel-Crafts Methods, Richard Ernest Huber
Alkylation With Some Alkyl Borate By The Friedel-Crafts Methods, Richard Ernest Huber
Theses
Normal butyl, allyl, methylbutyne and 2-chloroethyl borates were synthesized in yields above 90.0% from their corresponding alcohols and boric acid. Using some of the above alkyl borates, and others commercially available, as alkylating agents, benzene was alkylated by the Friedel-Crafts method, using aluminum chloride as the catalyst. Yields were dependent on catalyst concentration. The alkyl benzenes were identified by means of: 1) physical constants, 2) infrared spectra, 3) melting points of derivatives, and 4) chemical analysis. Starting with normal alkyl borates, the formation of isomeric and dialkylated products was established through the analytical data.
Collection Of Germanium From Acid Etch Waste By Ion Exchange, Robert Welsh Meyler
Collection Of Germanium From Acid Etch Waste By Ion Exchange, Robert Welsh Meyler
Theses
This report is an investigation of the use of ion exchange resins to recover germanium from acid etch wastes encountered in transistor manufacture.
Most of the experiments were performed with acid etch waste of unknown germanium content. The object was to determine if the ion exchange technique were applicable, and to select the most practical operating procedure.
When a satisfactory procedure had been established, later experimental runs were made with an acid etch solution of known germanium concentration to determine the yields of recovered germanium.
Yields of 60 per cent to 75 per cent recovery of germanium from the etch …
Vapor Liquid Equilibria Of Diacetone Alcohol In Various Solvents, John A. Mulligan
Vapor Liquid Equilibria Of Diacetone Alcohol In Various Solvents, John A. Mulligan
Theses
This paper presents the initial study of vapor-liquid equilibria data for the systems (a) diacetone alcohol-methanol (b) diacetone alcohol-ethanol and (c) diacetone alcohol-benzene at 100mm and 200mm and confirms the data reported by Hack and Van Winkle (6) on the system (d) diacetone alcohol-water at the same pressures. Margules and Redlich and Kister constants have been determined from the data, and are presented for use in future studies.
A comparison has been made between Redlich and Kister constants determined from laboratory data, and Redlich and Kister constants predicted from the physical properties of the components. Redlich and Kister constants predicted …
Enthalpies And Partial Molal Enthalpies For Methane-Carbon Dioxide System, Isaac Pass
Enthalpies And Partial Molal Enthalpies For Methane-Carbon Dioxide System, Isaac Pass
Theses
Enthalpies and partial molal enthalpies have been calculated by a combination of analytical and graphical procedures for the methane carbon dioxide binary system at 160°F, and at pressures from 200 to 9000 psia.
Mixtures containing .0852, .19912, .3583 and .6685 weight fraction of methane in carbon dioxide, as well as the pure components were used. The method for calculation of the enthalpies was outlined by Van Ness (1) and involves the application of residuals to the Redlich-Kwong equation of state (2).
The results of this paper illustrate the value of the method as an accurate and reasonably convenient tool. Excellent …
Fugacity And Activity Coefficients For Methane-Carbon Dioxide System, Robert J. Capik
Fugacity And Activity Coefficients For Methane-Carbon Dioxide System, Robert J. Capik
Theses
The Redlich and Kwong equation of state has been used along with the method derived by H. C. Van Ness (18) to calculate the fugacity and activity coefficients of the components of the methane-carbon dioxide system. Calculations have been carried out for the pure gases and four mixture compositions at 160°F. and 280°F. with pressures up to 600 atmospheres.
The method of Van Ness was used because it offered an accurate and simple way of calculating the fugacity and activity coefficients. This is accomplished by a combination of analytical and graphical procedures in which the graphical error is minimized by …