Materials Literature
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DEVELOPMENTAL DYNAMICS provides a focus for communication among developmental biologists who study the progressive and dynamic emergence of form and function during embryonic development. The journal is an international forum for the exchange of novel and substantive information on mechanisms that control development.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolymerization of Esters of Cinnamic Acid1C. S. Marvel and G. H. McCainCite this: J. Am. Chem. Soc. 1953, 75, 13, 3272–3273Publication Date (Print):July 1, 1953Publication History Published online1 May 2002Published inissue 1 July 1953https://pubs.acs.org/doi/10.1021/ja01109…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWetting of Fluorinated Solids by Hydrogen-Bonding LiquidsA. H. Ellison, H. W. Fox, and W. A. ZismanCite this: J. Phys. Chem. 1953, 57, 7, 622–627Publication Date (Print):July 1, 1953Publication History Published online1 May 2002Published inissue 1 July 1953https://pubs.acs.o…
A 2.5-Mc, barium-titanate, spherically focusing radiator was used to produce cavitation in both degassed and aerated water entirely within the restricted, high intensity focal region, remote from the water boundaries. The sonic intensity rises to 1.8 kw/cm2, and the pressure amplitude to ±70 atmos at the focus. High-i…
Abstract A series of polyethylene resins made by making progressive changes in temperature, pressure, and catalyst content has been studied by infrared absorption spectroscopy. From the methyl content and the number‐averages molecular weight of each resin, it was found that as molecular weight increases degree of bran…
An extensive survey is made of the chemical effects of ultrasonic waves. Increased understanding of the mechanism of these effects is sought through a consideration of the significance of certain experimental variables such as frequency, intensity, pressure, and temperature. Also considered is the role of cavitation.
The hydrated stannates of barium, calcium, strontium, magnesium, bismuth, lead, cobalt, nickel, zinc, copper, cadmium, iron, and manganese were prepared and their thermal behavior was studied by differential thermal analyses coupled with X‐ray diffraction patterns of calcines. Ceramic bodies were prepared from each of…
The general expression for the second-order angular aberration of sector shaped electromagnetic lenses consisting of superimposed uniform magnetic and radial electric fields used for the plane focusing of diverging beams of charged particles is derived. The result is applied to the special cases of pure magnetic and p…
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El autor después de estudiar durante varios años, en el Laboratorio de Investigaciones Tecnológicas de la provincia de Mendoza, las rocas volcánicas argentinas, bajo el punto de vista de su posible utilización como puzolanas, ha redactado un extenso trabajo, cuyo original se publicará en la revista argentina "Técnica…
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Abstract Young’s modulus for Polythene, cross-linked by pile irradiation, has been measured by both static and dynamic means. Below about 115°C (the usual melting-point) the modulus decreases with temperature. Above this temperature it increases again, in agreement with the theory of rubber-like elasticity, except for…
Neutron diffraction patterns have been obtained for polycrystalline magnesium ferrite. Application of a suitably oriented strong magnetic field has made possible a separation of the coherent scattering into its nuclear and magnetic parts. The magnetic scattering is found to be in good agreement with the N\'eel model o…
A method is described for settin g up soil-corrosion ce lls using a so il-we t ting procedure t hat give s rep rodu cible res ul ts. By m eas urin g t he weigh t losses o n cell e lectrodes made of steel a nd of cast. iro n afte r ex pos ure to vari ous soils for 6 m o nt hs, it. wa pos ible to co mpare t he e ffects…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAliphatic Organo-functional Siloxanes1L. H. Sommer, R. P. Pioch, N. S. Marans, G. M. Goldberg, J. Rockett, and J. KerlinCite this: J. Am. Chem. Soc. 1953, 75, 12, 2932–2934Publication Date (Print):June 1, 1953Publication History Published online1 May 2002Published inissue 1…
If double beta-decay takes place without the emission of neutrinos, the total kinetic energy of the two emitted electrons will be constant. The half-life would be of the order of ${10}^{16}$ years for 1.5-Mev available energy or ${10}^{14}$ years for 3.5-Mev available energy.${\mathrm{Sn}}^{124}$ and ${\mathrm{Zr}}^{9…
Abstract A study has been made of the thermal decomposition of an alkaline ossein‐gelatin in dilute solutions of hydrochloric acid and sodium hydroxide within a pH range of 3·05 to 9·85. Reaction temperatures of 60°, 70° and 80° have been employed, the reaction being followed by the decrease in jelly strength, measure…