43—The Geometry of a Plain Knitted Loop
This paper presents a geometrical model of a plain knitted loop as a basis for a mathematical description of the dimensional properties of a plain knitted fabric.
Materials Literature
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Méthodes nouvelles d'analyse chimique rapide des ciments
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Tentative method of test for compressive strength of hydraulic cement mortars (using 2-inc cube specimens)
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Errechnung des entsäuerungsgrades in vorwärmern für drehöfen aus der orsatanalyse
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A water-cooled kiln in Russia
En Gigant (Rusia) se ha adaptado una camisa de refrigeración a un horno rotatorio, con el fin de aumentar la vida del revestimiento y la eficiencia térmica.
Wisconsin firm makes vibrated pipe
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.
Préparation â chaud des pâtes argileuses
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Fuel economy in brick drying
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.
Beitrag zur flammenphotometrischen bestimmung des caloiums
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Contribución al estudio de la estructura del clinker de cemento portland (conclusión)
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Hormigón frío
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On the relations between structure and morphology of crystals. II
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…
Continuous distributions of dislocations: a new application of the methods of non-Riemannian geometry
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…
Acyl Derivatives of Glyceraldehyde-3-Phosphate Dehydrogenase
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…
Thermal Conductivity of Germanium at Ambient Temperatures
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 ${(\mathrm{c}\mathrm{m}\…
Gyromagnetic Ratio of Iron at Low Magnetic Intensities
It is shown that the measured value for the gyromagnetic ratio of pure iron as determined by a direct magneto-mechanical method, undergoes a change for low values of the induced magnetic intensity. The effective value of this ratio extrapolated to zero intensity, checks the value which is theoretically expected from a…
Ferromagnetic Resonance in Two Nickel-Iron Ferrites
Ferromagnetic resonance data are presented as a function of temperature from 4.2\ifmmode^\circ\else\textdegree\fi{}K to 380\ifmmode^\circ\else\textdegree\fi{}K in (Ni${\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…
Magnetostriction and Permeability of Magnetite and Cobalt-Substituted Magnetite
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…
Classical Calculation of Differential Cross Section for Scattering from a Coulomb Potential with Exponential Screening
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 Absorption in Glass
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…