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Effect of ground motion from nuclear excavation: interim canal studies

Description: The effect of ground motion due to nuclear excavation of a sea-level canal at two alternative routes, 17A and 25E, are discussed from the aspects of motion prediction and structural response. The importance of the high-rise building problem is stressed because of its complexity. Several damage criteria are summarized for advance planning of excavation and operation. The 1964 shot schedule and the latest revised schedule are included for comparison.
Date: September 1, 1969
Creator: King, C. Y. & Nadolski, M. E.
Item Type: Refine your search to only Report
open access

Domestic tar sands and potential recovery methods: a review

Description: Present knowledge of United States tar sands, including physical properties, occurrence, reserves, and recovery methods, is reviewed and evaluated. Tar sands are oil-, bitumen-, asphalt-, tar-, or petroleum-impregnated rock from which little hydrocarbon material is recoverable by conventional crude oil production techniques. Tar sand oil has been produced by steam injection and underground combustion techniques and by mining methods. However, efficient application of nonmining recovery techniqu… more
Date: January 1, 1969
Creator: Spencer, G. B.; Eckard, W. E. & Johnson, F. S.
Item Type: Refine your search to only Article
open access

Physical interpretation of quantum theories of gravitation

Description: An alternative approach to a quantum theory of gravitation is explored in which a quantum version of the Newtonian equivalence principle is paired with special relativistic quantum field theory. Since no clear statement of the Galilei-Newton equivalence principle exists in quantum mechanics, the purpose is to take the first step in this direction by stating and sketching the proof of this nonrelativistic equivalence principle of quantum mechanics. One proceeds from operational statements to the… more
Date: March 1, 1969
Creator: Ekstein, H.
Item Type: Refine your search to only Report
open access

THE NATURE AND IMPORTANCE OF SELENIUM METABOLITES IN THE ANIMAL

Description: Although the toxicity of selenium has been known for several decades and its essentiality has been established for over one decade, very little is known concerning the organic forms of selenium occurring within animals and their functions. Dimethyl selenide has been shown to be an exhalation product from rats injected with selenate or selenite. Recently trimethylselenonium ion has been shown to be excreted in the urine of rats receiving selenite. The work reported here concerns the biological a… more
Date: January 1, 1969
Creator: Halverson, A W; Palmer, I S & Whitehead, E I
Item Type: Refine your search to only Report
open access

Thermal Data Fitting with Orthogonal Functions and Combined Table Generation. The FITAB Program

Description: A FORTRAN IV program to represent experimental thermal data with orthogonal functions and to tabulate the thermodynamic functions is described. The use of a more general algorithm permits the generation of power series which can contain positive or negative powers. Further, it is possible to start generation at any power with any term-to-term increment in the exponent. This allows the use of an equation with a leading cubic term for very low temperature heat capacities. Enthalphy data can be ap… more
Date: February 1, 1969
Creator: Justice, Bruce H
Item Type: Refine your search to only Report
open access

Behavior of a Bi-Material Cylinder Including the Effects of Fracture

Description: A finite element method is presented which utilizes a three dimensional quadrilateral finite element with a stiffness matrix developed in cylindrical coordinated. The method is used to study the behavior of layer cylinders due to asymmetric static thermal loadings. Two types of bonding, rigid and flexible are considered. Additional examples including a pressurized thick walled cylinder and a cylindrical shell under pressure and thermal loadings are presented.
Date: August 1, 1969
Item Type: Refine your search to only Report
open access

A Study of the Defect Structure of Nonstoichiometric CeO2

Description: The electrical conductivity of arc cast specimens of Ce1+yOx have been measured as a function of temperature and oxygen pressure. These preliminary results indicate that although the absolute value of the conductivity for arc cast Ce1+yO2 specimens differs from the sintered specimens the temperature and oxygen pressure behavior is similar. The electron mobility in Ce1+yO2 was calculated from the electrical conductivity and thermodynamic data and the assumption that the atomic defects exist pred… more
Date: September 1, 1969
Creator: Blumenthal, Robert N
Item Type: Refine your search to only Report
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