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Physical characteristics of cottonseed related to seedling vigor and design parameters for seed selection
(1969)
Investigations were conducted to relate the physical characteristics of cottonseed to germination, subsequent seedling growth and final plant development. Many researchers have postulated that certain physical characteristics ...
Equilibrium studies of some anion radical solutions by electron spin resonance
(1969)
Ion pairing affects the E.S.R. spectra of cyclooctatetraene (COT) anion radical, influencing the rates and thermodynamic parameters of the line-broadening process and the disproportionation equilibrium, which controls the ...
An experiment to evaluate the relative effectiveness of two approaches to teaching college algebra in achieving selected objectives of college algebra in industrial technology curricula
(1969)
The purpose of the study was to evaluate the relative effectiveness of two approaches to teaching college algebra in achieving those objectives of college algebra in industrial technology curricula which can be pursued in ...
Two-phase, two-dimensional numerical simulation of individual well problems
(1969)
A new numerical simulation method was developed to solve two-dimensional reservoir problems of the type encountered in drilling and producing activities of a single well. The method includes more variables and is more ...
A study of the effects of fluoride on nucleic acids of Escherichia coli (Migula) Castellani & Chalmers
(1969)
Escherichia coli (American Type Culture Collection Number 11775) was grown in nutrient broth and treated with sodium fluoride at concentrations up to 0.30M and with radioactive fluoride ions (¹⁸₉F). DNA was isolated and ...
The synthesis of some organophosphorus compounds and studies of the electron spin resonance spectra of their free radical anions
(1969)
This research describes the preparation of several new organophosphorus compounds. The e.s.r. (electron spin resonance) spectra of the radicals formed by the reaction of these and other organophosphorus compounds with ...
A study of the physico-chemical, mineralogical and engineering properties of fine-grained soil in relation to their expansive characteristics
(1969)
The soils engineer, unlike the structural engineer who works with steel or other elastic homogeneous materials, is faced with the problem of predicting the behavior of a material that has many complex properties. Soils are ...
Synthesis of some 1-aminophosphonic acids containing sulfur and heterocyclic rings
(1969)
Three 1-aminoalkylphosphonic acids were synthesized, utilizing the modified Curtius reaction. Two of the amino phosphonic acids synthesized are analogs of naturally occurring 1-aminoalkylcarboxylic acids. The 1-aminoalky ...