Crime, overcrowding, noise, bad air, "the element," were said to be the problems.
The files on Mr. Gaxiola, which refer to him coldly as "the element," were compiled by the Federal Security Directorate, known as the D.F.S., the political police of the time.
The classical methods of separating and purifying the element were fractional crystallization and precipitation, but solvent-solvent extraction and ion-exchange technologies have made available kilogram quantities of highly pure holmium oxide.
The extent of oxidation and the oxidizing state of the element were analyzed by X-ray diffraction, X-ray photoelectron spectroscope and energy dispersive X-ray spectroscopy techniques.
Parameters of the material model governing the element were related through regression analyses to predictor variables to arrive at governing relations for the parameters.
After an elastic branch in which all sections of the element were fully compressed, cracking was attained at about 10 N/mm, after which the experimental curve shows a softening tendency due to the diffusion of cracking from mid-span towards the supports.
