Thermogravimetric Analysis of Waxes
Thermogravimetric analyses of various waxes were made. This manner of assessment was evaluated critically.
Materials Literature
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Electron Microscopic Study on the Structure of TinO2n-1 (4≤n≤10) Phases
Transmission electron microscopy and diffraction study of the homologous series of oxides Ti n O 2 n -1 (4≤ n ≤10) reveals that the structures of these oxides are derived from rutile by regular crystallographic shear on planes parallel to (121), as previously suggested by Andersson and Jahnberg (Arkiv Kemi. 21 (1963)…
Optical Properties of Evaporated Rhodium Films Deposited at Various Substrate Temperatures in the Vacuum Ultraviolet from 150 to 2000 Å*
The optical properties of evaporated rhodium films were investigated in the wavelength region from 150 to 2000 Å. The films were evaporated by electron bombardment and deposited at various rates onto glass substrates of different temperatures. Their optical constants were determined from reflectance measurements made…
Ultrasonic Measurement in Liquid Alkali Metals
Ultrasonic absorption and velocity measurements have been made in high-purity liquid sodium, potassium, rubidium, and cesium at temperatures from their melting points to 250°C. Corresponding classical absorption values have also been computed over these ranges of temperature. It has been found that the measured absorp…
Properties of Polystyrene-Polydimethylsiloxane Block Copolymers
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProperties of Polystyrene-Polydimethylsiloxane Block CopolymersJohn C. Saam and F. W. Gordon FearonCite this: Ind. Eng. Chem. Prod. Res. Dev. 1971, 10, 1, 10–14Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Published inissue 1 March 1971h…
Magnetomechanical effects in the Rayleigh region
A brief résumé of basic magnetism is followed by a consideration of the magnetization process in the absence of applied mechanical stress, in which the importance of internal stresses and inclusions is emphasized and which leads to the introduction of Néel's disperse field theory. The Rayleigh laws are interpreted in…
Optical Activity of Human Lysozyme
The ultraviolet circular dichroism spectra of human lysozyme are presented. Effects of pH and added inhibitor (N-acetyl-D-glucosamine) were examined and the results were compared with similar measurements of hen egg-white lysozyme. The near-ultraviolet CD spectral bands are substantially different in the human and hen…
Measurement of Wool Growth and its Response to Nutritional Changes
Problems associated with the measurement of changes in the rate of wool growth are discussed. In particular, there are large errors due to the "emergence time" of the wool, that is the time required for newly keratinized portions of fibre to move out of the follicles to the point where they can be removed by clipping.…
The derivation and application of design equations for ferroresonant voltage regulators and regulated rectifiers
Design equations for the most commonly used ferroresonant regulators and regulated rectifiers are derived. Expressions relating the physical size of the components and the short circuit characteristic of the circuit to the output power, frequency, input power factor, and voltage levels are developed. Frem these expres…
Nalidixic Acid-Resistant Mutants of Escherichia coli Deficient in Isocitrate Dehydrogenase
icd Mutants of Escherichia coli K-12, selected for their resistance to nalidixic acid, are deficient in isocitrate dehydrogenase.
Synthesis and reactions of novel bridged dicarbollide complexes having electron-deficient carbon atoms
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and reactions of novel bridged dicarbollide complexes having electron-deficient carbon atomsM. Frederick Hawthorne and James N. FrancisCite this: Inorg. Chem. 1971, 10, 3, 594–597Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Pu…
Review of magnetic properties of Fe-Ni alloys
During the past two decades, improved understanding of the fundamental magnetic behavior of Fe-Ni alloys has made them one of the most versatile class of soft magnetic materials. No longer is the concern limited to high permeability and low coercfve force at room temperature. Alloys have now been custom-crafted to mee…
I.R. Spectroscopic Evidence for Interaction Between Hydronium ions and Lattice OH Groups in Montmorillonite
Abstract At low levels of hydration, exchangeable D + in montmorillonite interacts with lattice OH groups and quantitatively converts AlMgOH groups to AlMgOD. Hydroxyl groups coordinated to two Al ions undergo a slower exchange, the extent of which is restricted by octahedral Fe 3+ ions. The OH stretching vibration of…
Long‐chain branching in low‐density polyethylene
Abstract A method is given for the analysis of long‐chain branching in polymers by using combined GPC and intrinsic viscosity measurements. A computer program was written to evaluate branching indices by a tabular, iterative method. The method was applied to the evaluation of long‐chain branching in low‐density polyet…
Shear Creep Studies of Narrow-Distribution Poly(cis-isoprene)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTShear Creep Studies of Narrow-Distribution Poly(cis-isoprene)Norio Nemoto, Motohiro Moriwaki, Hisashi Odani, and Michio KurataCite this: Macromolecules 1971, 4, 2, 215–219Publication Date (Print):March 1, 1971Publication History Published online1 May 2002Published inissue 1…
Technical Note: Effect of Cold Work on Intergranular Corrosion of Sensitized Stainless Steel
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation C. S. TEDMON, D. A. VERMILYEA, D. E. BROECKER; Technical Note Effect of Cold Work on Intergranular Corrosi…
Cooperative Dynamic Jahn-Teller Effect. II. Crystal Distortion in Perovskites
A molecular-field-type theory is given for the second-order phase transitions occurring in perovskite crystals, in which a Jahn-Teller (JT) ion (${\mathrm{Mn}}^{3+}$, ${\mathrm{Cu}}^{2+}$, ${\mathrm{Cr}}^{2+}$) occupies an octahedral $B$ site. The dynamic character of the JT effect is taken into account and excited vi…
X‐Ray Small‐Angle Scattering of Yeast Glyceraldehyde‐3‐phosphate Dehydrogenase as a Function of Saturation with Nicotinamide‐Adenine‐Dinucleotide
Structural changes of yeast glyceraldehyde‐3‐phosphate dehydrogenase as a function of saturation with NAD have been measured with the X‐ray small‐angle scattering technique. Samples of yeast glyceraldehyde‐3‐phosphate dehydrogenase were investigated at pH 8.5 and 40° and five different degrees of saturation with the c…
The fracture toughness and stress corrosion cracking characteristics of an anhydride‐hardened epoxy adhesive
Abstract The toughness and stress corrosion cracking characteristics of an epoxy resin (DER 332) hardened with hexahydrophthalic anhydride (HHPA) were investigated. The epoxy was studied in both the bulk and bond form, and its properties were compared with an amine‐hardened (tetraethylene pentamine, TEPA) system. The…
Mechanism of the Ferroelectric Phase Transformation in Rare-Earth Molybdates
Neutron scattering experiments on ${\mathrm{Tb}}_{2}$ ${(\mathrm{M}\mathrm{o}{\mathrm{O}}_{4})}_{3}$ show the ferroelectric orthorhombic phase to result from a phonon instability at the (\textonehalf{}, \textonehalf{}, 0) Brillouin zone corner of the parent tetragonal phase. Anharmonic coupling to these antiferroelect…