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The article gives a general treatment of the electron optical properties of cylindrical electron spectrographs. The resolution, the transmission, and the ratio of them (figure of merit) for electrostatic spectrographs are computed and compared for various choices of focusing arrangement and location of the source and…
Abstract The corrosion resistance of materials employed for surgical applications was dertermined and compared by means of potentiostatic anodic polarization techniques. In a physiological saline solution the passive breakdown potential of stainless steel materials was dependent upon the oxygen content opf the solutio…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMechanism of thermal decomposition of n-butyl(tri-n-butylphosphine) copper(I)George M. Whitesides, Erwin R. Stedronsky, Charles P. Casey, and Joseph San Filippo Jr.Cite this: J. Am. Chem. Soc. 1970, 92, 5, 1426–1427Publication Date (Print):March 1, 1970Publication History Pu…
Particle length and the influence of various factors on the particle length of F-actin polymerized in Vitro were investigated in detail by electron microscopy. The length distribution of F-actin was found to be very heterogeneous; e.g. te number- average length (〈L〉n) was abut 1.5μ, the weight-average length (〈L〉w) wa…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Victor A. Bloomfield; Free Volume in a One‐Dimensional Liquid. J. Chem. Phys. 1 March 1970; 52 (5…
The lattice parameters of ammonium chloride have been measured at 31.5 and 54.0°C. The coefficient of linear expansion is found to be 58.5 × 10 −6 °C −1 .
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLaser Radiation-Induced, Residue-Free, Localized Decomposition of Some PlasticsLeo Parts, Edgar E. Hardy, and Margaret L. RodenburgCite this: Ind. Eng. Chem. Prod. Res. Dev. 1970, 9, 1, 21–26Publication Date (Print):March 1, 1970Publication History Published online1 May 2002…
Covers advancements in spacecraft and tactical and strategic missile systems, including subsystem design and application, mission design and analysis, materials and structures, developments in space sciences, space processing and manufacturing, space operations, and applications of space technologies to other fields.
Fluorescence from the lowest spin orbital component of the 3T2 manifold of Ni ions in MnF2 is observed to terminate on the ground state 3A2 of the Ni with excitation of 0, 1, and 2 spin deviations centered on the nickel ion and corresponding, respectively, to the crystal ground state (G), and excitation of the s0 and…
The high-frequency permeability of partially magnetized ferrites is calculated for some simple domain configurations, comprising only ``up''- and ``down''-domains. The method used is based upon the magnetostatic approximation and neglects exchange effects, but is otherwise substantially rigorous. The components of the…
Summary Wardite, NaAl 3 (OH) 4 (PO 4 ) 2 . 2H 2 O, has a = 7·03 Å, c = 19·04 Å; space group P 4 1 2 1 2 or P 4 3 2 1 2. Its crystal structure was solved by a three-dimensional Patterson function computed using intensity data photographically collected by the Weissenberg method, and refined by successive Fourier maps a…
Recent advances in the study of microwave ferrites and garnets have resulted in a better understanding of the relationship between magnetic properties and the fundamental crystal structure. This article presents a review of the way in which the crystal structure of microwave garnets may be designed in order to realize…
The existence of stable and metastable forms of 2ZrO 2 ·P 2 O 5 and the subsolidus phase relations in the system ZrO 2 ‐ZrP 2 O 7 were confirmed before investigation of the ternary system. The synthesis and thermal behavior of ZrW 2 O 8 were reinvestigated, and the system WO 3 ‐P 2 O 5 was examined cursorily. A ternar…
Abstract Poly‐2‐oxazolidones of high molecular weight have been synthesized from diisocy anates and diepoxides. The synthetic method was first developed for the model compound 3‐phenyl‐5‐phenoxymethyl‐2‐oxazolidone prepared from phenyl isocyanate and phenyl glycidyl ether. Conditions found most suitable for a high yie…
Abstract The effect of various soluble and insoluble surface active agents on the absorption of ammonia into a static aqueous system was studied. Saturated straight‐chain hydrocarbons with four to twenty‐two carbon atoms and polar end groups were selected as the surface active agents to be studied. Alcohol, amine, and…
A field-induced spin reorientation has been observed in the weak ferromagnet, ErCrO3, at temperatures below the Néel point, TN=133.2°K. With a magnetic field, H, along the a axis of this orthorhombic compound, the spontaneous magnetization rotates from the c axis, at H=0, to the a axis, at H=Ht. The ``transition'' fie…
Experimental values are given of the thermal conductivity and thermoelectric power of n-type silicon doped with phosphorus, antimony or arsenic, containing 4*10 19 to 6*10 25 m -3 electrons at room temperature, covering the range 4-300 degrees K. A theoretical treatment, using the variational method, suggests that the…
A series of solid solutions with the general formula La1−xCaxFe1− xMnxO3, where x is from 0.0 to 1.0, have been synthesized and their structural, magnetic and electrical properties have been studied. Polycrystalline samples were prepared by the usual ceramic method, firing at 1350° under a flow of oxygen gas to keep t…
Neutron diffraction measurements on powder and single-crystal samples of V2O3 have confirmed the existence of long-range magnetic order in the low temperature (monoclinic) phase. Paoletti and Pickart1 discovered an extra diffraction peak at low temperature which they attributed to nuclear scattering. A polarization an…
Gleotrichia echinulata was planktonic in Green Lake (Seattle, Washington) during summer, making its initial appearance between May and early July and disappearing during September. It apparently spent 8 to 10 months of the year on the bottom where colonies developed from spores deposited by the preceding year’s bloom.…