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The Use of Critical Point Phenomena in Preparing Specimens for the Electron Microscope

Thomas F. Anderson1950-07-01Journal of Applied Physics

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 Thomas F. Anderson; The Use of Critical Point Phenomena in Preparing Specimens for the Electron M…

Electron and X-Ray Spectroscopy TechniquesSurface and Thin Film PhenomenaAdvancements in Photolithography Techniques

Heavy Metal Prosthetic Groups and Enzyme Action

Otto Warburg1950-07-01JAMA

Recent experiments by Warburg in collaboration with B. S. Hendricks and Dean Burk of the National Cancer Institute were conducted on the maximum quantum efficiency of photosynthetic processes which have been disputed since the middle 1930's. These latest experiments, unfortunately, are not included in the last chapter…

Orthopaedic implants and arthroplastyPolymer Surface Interaction StudiesAnalytical chemistry methods development

Notizen: Zur Kenntnis eines Magnesiumwasserstoffs MgH2

Egon Wiberg、Richard Bauer1950-07-01Zeitschrift für Naturforschung B

Es wird uber die Entdeckung eines Magnesiumwasserstoffs, MgH 2 , berichtet, der durch thermische Zersetzung von Magnesium-dialkylen oder durch Umsetzung von Magnesium-dialkylen mit Diboran darstellbar ist und eine weiße, feste, wasserempfindliche, nicht selbstentzundliche, ätherunlösliche, nicht flüchtige und im Vakuu…

Quantum, superfluid, helium dynamicsInorganic Fluorides and Related CompoundsHydrogen Storage and Materials

Heat Capacities at Low Temperatures and Entropies of Zirconium, Zirconium Nitride, and Zirconium Tetrachloride

S. S. Todd1950-07-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeat Capacities at Low Temperatures and Entropies of Zirconium, Zirconium Nitride, and Zirconium TetrachlorideS. S. ToddCite this: J. Am. Chem. Soc. 1950, 72, 7, 2914–2915Publication Date (Print):July 1, 1950Publication History Published online1 May 2002Published inissue 1 J…

Thermal and Kinetic AnalysisRadioactive element chemistry and processingChemical Thermodynamics and Molecular Structure

A note on the rhombohedral modification of graphite

G. E. Bacon1950-07-01Acta Crystallographica

fl form corresponds to the simple formula To(CHa)zI ~.The demonstration of our supposition could explain the anomaly observed in the determination of the number of molecules per unit cell.Further investigations are being carried out.

Fiber-reinforced polymer compositesGraphite, nuclear technology, radiation studiesMatrix Theory and Algorithms

Interpretation of Fracture Markings

J. A. Kies、A. M. Sullivan、G. R. Irwin1950-07-01Journal of Applied Physics

This paper presents a study of the sequence of events by which cracks ``grow.'' A careful investigation was made of the origin, development, and characteristic pattern of level-difference markings left by rapidly moving fractures in a wide variety of materials. Characteristic markings indicating discontinuous propagat…

High-Velocity Impact and Material Behavior

Precision measurements of lattice parameters of non-cubic crystals

A. Taylor、Ross Floyd1950-07-01Acta Crystallographica

It is shown that lattice parameters of non-cubic crystals can be accurately determined by linear extrapolation against the function ½(cos e 0/sin 0-b cos ~ 0/0) by selecting lines with suitable indices.Use can be made of the slope of the extrapolation curve of one of the parameters to derive the slope of the extrapola…

X-ray Diffraction in Crystallography

Quantitative Estimates of Filamentous Algae

F. C. W. Olson1950-07-01Transactions of the American Microscopical Society

One measure of the filamentous algae present in a microscope field is the total length of all the algal filaments. This is usually estimated by superimposing a measuring grid upon the field either by a micrometer eyepiece or a ruled counting cell. The inherent difficulty in such a method is in estimating lengths of se…

Algal biology and biofuel productionDiatoms and Algae Research