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Se presentan en este artículo, de forma detallada, las distintas etapas del proceso de fabricación, así como las características, de los tubos producidos por la Madison Concrete Pipe and Products Company, Madison, Wis.
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Mediante el empleo de dos nuevos mecheros Suxé, junto con la introducción de algunas reformas, se ha conseguido disminuir el consumo de combustible en la operación de secado, evitándose, al mismo tiempo, la presencia de humos.
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The characteristic features of S-faces (stepped faces, i.e. faces parallel to one periodic bond chain only) are further developed. After giving some definitions, a discussion follows of the factors determining the morphological importance of S-faces. The conclusion is drawn that the development of S-faces in a particu…
Abstract When describing a crystal containing an arbitrary distribution of dislocation lines it is often convenient to treat the distribution as continuous, and to specify the state of dislocation as a function of position. Formally, however, there is then no ‘good crystal’ anywhere, and difficulties arise in defining…
Acetyl phosphate and 1,3-diphosphoglycerate react with glyceraldehyde-3-phosphate dehydrogenase to form relatively stable enzyme substrate compounds. These compounds appear to be thiol esters, and their properties indicate that they are intermediates in the catalytic activity of the enzyme: they undergo hydrolysis and…
The thermal conductivity of high-purity germanium has been measured; it varies approximately linearly from 0.61 watt ${(\mathrm{c}\mathrm{m}\phantom{\rule{0ex}{0ex}}\mathrm{C}\mathrm{\ifmmode^\circ\else\textdegree\fi{}})}^{\ensuremath{-}1}$ at 5\ifmmode^\circ\else\textdegree\fi{}C to 0.50 watt ${(\mathrm{c}\mathrm{m}\…
It is shown that the measured value for the gyromagnetic ratio of pure iron as determined by a direct magneto-mechanical method, undergoes a change for low values of the induced magnetic intensity. The effective value of this ratio extrapolated to zero intensity, checks the value which is theoretically expected from a…
Ferromagnetic resonance data are presented as a function of temperature from 4.2\ifmmode^\circ\else\textdegree\fi{}K to 380\ifmmode^\circ\else\textdegree\fi{}K in (Ni${\mathrm{O})}_{0.95}$(Fe${\mathrm{O})}_{0.05}$${\mathrm{Fe}}_{2}$${\mathrm{O}}_{3}$ and in (Ni${\mathrm{O})}_{0.75}$(Fe${\mathrm{O})}_{0.25}$${\mathrm{F…
The principal magnetostriction constants of magnetite were determined over the temperature range from 120\ifmmode^\circ\else\textdegree\fi{}K to 300\ifmmode^\circ\else\textdegree\fi{}K by the strain gauge technique. Since ${\ensuremath{\lambda}}_{111}$ and ${\ensuremath{\lambda}}_{100}$ are different in sign and pract…
The potential energy function considered is $V=(\frac{{Z}_{1}{Z}_{2}{e}^{2}}{r})\mathrm{exp}(\ensuremath{-}\frac{r}{a})$, which approximately represents the potential between two atoms in collision taking into account the screening of the atomic electrons. Here the first factor is the Coulomb potential and the exponen…
Paramagnetic resonance absorptions occurring with spectroscopic splitting factors of 4 and 6 were noted in all glass samples studied. These were apparently anisotropic $g$-values for a specific impurity and the peaks recorded are interpreted as being the result of a distribution of Stark fields over all directions in…
Barium titanate single crystals have electrical characteristics in the orthorhombic and rhombohedral phases which are similar to those observed in the tetragonal region. At a phase transition the coercivity, determined from 60 cps hysteresis loops, decreases sharply from its value at temperatures above the transition.…
Relations between the phase angles of complex structure factors (analogous to the sign relations which are known to apply for real structure factors) are derived, and their possible application to crystal-structure analysis is discussed.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalystsBenjamin H. DanzigerCite this: Ind. Eng. Chem. 1955, 47, 8, 1495–1500Publication Date (Print):August 1, 1955Publication History Published online1 May 2002Published inissue 1 August 1955https://doi.org/10.1021/ie50548a019RIGHTS & PERMISSIONSArticle Views115Altmetric-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPlasticizers for Poly(Vinyl Chloride) ResinsCharles J. Knuth and Paul F. BruinsCite this: Ind. Eng. Chem. 1955, 47, 8, 1572–1578Publication Date (Print):August 1, 1955Publication History Published online1 May 2002Published inissue 1 August 1955https://pubs.acs.org/doi/10.102…
The tensile behavior of a Hookean material elongated by rapid impact at one end has been calculated, using a theory in which wave propagation is considered. As a result of these calculations, limits have been established on the applicability of a simpler theory, discussed in a preceding publication, in which wave prop…