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Now showing items 11-20 of 857
Bioluminescence as noise in an underwater optical surveying device
(1965)
The effect of a pulsed light in the stimulation of bioluminescence by organisms at the 700 meter depth in the Northeast Gulf of Mexico has been studied. The instrument consisted of pulsed xenon lamp source and a photomultiplier ...
Far infrared and nuclear magnetic resonance spectra of molecules with internal rotor groups
(1965)
The torsional frequencies for 1,2-butadiene, methyl phosphine and 1-chIoro-1, 1-difIuoroethane were observed in the far infrared at 153.9, 207 and 246 cm⁻¹ respectively. The corresponding barriers to internal rotation were ...
A characterization of the lipids of the organisms which make up the main bulk of a coral reef with particular emphasis on the hydrocarbons
(1965)
The lipid extracts of a series of living and fossil reef organisms were subjected to analysis by a variety of techniques. Initial column chromatography over silicic acid gave a series of fractions: 1. Saturated and monenoic ...
Transient thermal stresses in liquid metal cooled reactor fuel elements
(1965)
A numerical solution for two-dimensional transient thermal stresses in a liquid metal cooled nuclear reactor fuel element is presented. The method consists of first determining the two-dimensional transient temperature ...
Correlations between structure and nuclear magnetic resonance (N.M.R.) spectra for aliphatic esters
(1965)
The n.m.r. chemical shift for 18 acetate esters, CH₃COOR', and 16 methyl esters, RCOOCH₃, have been measured neat and in carbon tetrachloride solution. The n.m.r. chemical shifts of acetate esters, CH₃COOR', are controlled ...
Experimental investigation of the thermomagnetic torque effect in dilute hydrogen
(1969)
An investigation of the thermomagnetic torque, or Scott effect, has been carried out in several concentrations of ortho and para-hydrogen. Measurements were made with a sensitive torsion pendulum over a range of temperatures ...
A search for double-minimum potential functions in excited states of bent triatomic molecules
(1965)
The spectra of the 3700-Å absorption system of SO₂, the 2491-Å absorption system of NC₂ and the 1340-Å system of SO₂ are investigated. The principal aim of this study is to find evidence for double-minimum potential ...
Inheritance of resistance to crown rust and certain morphological traits in crosses involving Avena sterilis L. and methods of breaking seed dormancy in oats
(1969)
Six strains of A. sterilis introduced form Israel as breeding sources of crown rust of oats were crossed with a very susceptible variety Frazier. The number of genes conditioning resistance in the 6 strains was determined ...
Development of a method for isolation of gram quantities of dissolved organic matter from sea water and some chemical and isotopic characteristics of the isolated material
(1969)
For the first time, gram quantities of dissolved organic matter have been isolated from several thousand liters of sea water with minor contamination. Optimum conditions for the adsorption of the dissolved organic matter ...