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King-Armstrong Phosphatase Estimation by the Determination of Liberated Phosphate

E. J. King、M. A. M. Abul-Fadl、P. G. Walker1951-02-01Journal of Clinical Pathology

If the disodium phenylphosphate contains appreciable inorganic phosphate the solid material should be extracted with 95% alcohol in a Soxhlet.

Alkaline Phosphatase Research StudiesAdvanced Proteomics Techniques and ApplicationsDiatoms and Algae Research

Über die katalytische Ammoniak‐Oxydation und die schnellverlaufenden katalytischen Prozesse

Leonid Andrussow1951-01-07Angewandte Chemie

Abstract Die Theorie der schnellverlaufenden katalytischen Prozesse wird weiterentwickelt und für den Fall der Ammoniak‐Oxydation 1 ) erläutert. Einfache Beispiele werden herangezogen, zugleich wird eine allgemeine Theorie der Ammoniak‐Oxydation gegeben. Als Grundlagen werden im wesentlichen Ergebnisse eigener systema…

Radioactive element chemistry and processingDiatoms and Algae ResearchCatalytic Processes in Materials Science

Replica techniques in electron microscopy

A. Agar、R S M Revell1951-01-01British Journal of Applied Physics

Precautions for obtaining clean and reliable replicas for the study of large areas of metal surfaces are outlined. Modifications to the backed replica technique, and the application of preshadowing in metallographic studies are described.

Electron and X-Ray Spectroscopy TechniquesAdvanced Materials Characterization Techniques

Physical changes in rubbing surfaces on scuffing

D. Clayton、Christopher H. Jenkins1951-01-01British Journal of Applied Physics

Cast-iron surfaces rubbing against steel have been found to develop a thin layer of a white constituent when scuffing occurs or is approached. This material has not been fully identified, but the results point to it having a basis of two phases, viz. cementite and a quenched high-carbon ferritic phase developed from a…

Hydrogen embrittlement and corrosion behaviors in metalsNuclear Physics and ApplicationsHigh-Velocity Impact and Material Behavior

301. The oxides of uranium. Part II. The binary system UO 2 –CaO

K. B. Alberman、R. C. Blakey、John S. Anderson1951-01-01Journal of the Chemical Society (Resumed)

K. B. Alberman, R. C. Blakey and J. S. Anderson, J. Chem. Soc., 1951, 1352 DOI: 10.1039/JR9510001352

Radioactive element chemistry and processingNuclear Materials and PropertiesNuclear reactor physics and engineering

The Relation of Length to Other Physical Properties of Cotton Fibers

Ora W. Morlier、Rollin S. Orr、James N. Grant1951-01-01Textile Research Journal

Results are reported on tests of breaking load and elongation of single fibers at constant specimen length from the length groups of 6 cotton samples. A description is given of the instrument used in these tests. Average weight fineness of the center section of fibers from each length group was determined, and the ten…

Research in Cotton CultivationTextile materials and evaluations

The Entropies of Melting of Metals

R.A. Oriani1951-01-01The Journal of Chemical Physics

The melting process can be conceived as consisting of first an expansion, and then a disordering of the crystalline structure. The entropy contribution from the first effect is calculated by analogy with the process occurring in a volume expansion within an individual phase; the entropy contribution from the melting d…

Neural Networks and ApplicationsMachine Learning in Materials Science

The Mobility of Electrons in Diamond

Clifford C. Klick、Robert Maurer1951-01-01Physical Review

The mobility of electrons in diamond has been measured by means of the Hall effect. In agreement with the theory of Seitz, the mobility is inversely proportional to the three-halves power of the absolute temperature. The measured room temperature value of the mobility is 900 ${\mathrm{cm}}^{2}$/volt-sec as compared wi…

Diamond and Carbon-based Materials ResearchHigh-pressure geophysics and materialsForce Microscopy Techniques and Applications

Évolution et aspect actuel du microscope électronique: Le congrès international de microscopie électronique, Paris, 14–22 September 1950

Pierre Grivet1951-01-01Biochimica et Biophysica Acta

Resume Le Congres de Paris rassembla au mois de septembre de cette annee, 600 congressistes appartenant a 17 nations, qui apporterent plus de 120 communications originales et de tres nombreuses photographies; les Professeurs Wyckoff 2 , Finch 3 , Mark 4 , Cosslett 5 , firent quatre conferences d'ensemble particulierem…

Electron and X-Ray Spectroscopy TechniquesMachine Learning in Materials Science

Carotinoidsynthesen VIII. Synthese des Dodecapreno‐β‐carotins

P. Karrer、Conrad Hans Eugster1951-01-01Helvetica Chimica Acta

Abstract Vitamin A wurde mit Aluminium‐t‐butylat und Aceton zum 4,8‐Dimethyl–10‐„1′,1′,5′‐trimethyl‐c.‐hexen‐(5′)‐yl‐(6′)”︁‐ decapentaen‐ (1, 3,5,7,9)‐methylketon kondensiert und letzteres in kristallisierter Form dargestellt (C 23 ‐Keton).

Supramolecular Self-Assembly in MaterialsPorphyrin and Phthalocyanine ChemistryPolyoxometalates: Synthesis and Applications

Dissoziationsregeln bei Polyaminen. Dissoziation und Quaternisierbarkeit

R. Rometsch、A. Marxer、K. Miescher1951-01-01Helvetica Chimica Acta

Abstract 1. Die Dissoziationszahlen einer Reihe von aliphatischen, gesättigten Polyaminen werden ermittelt und miteinander verglichen.

Advanced Polymer Synthesis and CharacterizationSynthesis and properties of polymersbiodegradable polymer synthesis and properties

Vapor Pressure of Beryllium Oxide

N. D. Erway、Ralph L. Seifert1951-01-01Journal of The Electrochemical Society

The vapor pressure of beryllium oxide has been measured by a modification of the Knudsen effusion method, utilizing radioactive 4 Be 7 as tracer. In the experimental temperature range of 1950° to 2150°C the vapor pressure is given by the equation The boiling point of liquid beryllium oxide is estimated to be 4120 ± 17…

Thermodynamic and Structural Properties of Metals and AlloysFusion materials and technologiesNuclear Materials and Properties

Effects of Mechanical Pressures on the Dielectric Properties of Polycrystalline Barium-Strontium Titanate

G. Shirane、K. Sato1951-01-01Journal of the Physical Society of Japan

The effects of the following three kinds of mechanical pressures upon the dielectric properties of barium-strontium titanate ceramics have been investigated: (1) hydrostatic pressure, (2) compression parallel to the electrode surface and (3) compression normal to the electrode surface (as shown in Fig. 1). Especially…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesPhotorefractive and Nonlinear Optics

Measurement of Fiber Orientation

Charles H. Lindsley1951-01-01Textile Research Journal

A method is described for estimating the extent of fiber orientation in lap, sliver, etc., thus making possible a quantitative evaluation of the effectiveness of carding and drawing operations in aligning the fibers. In principle, the method involves clamping the sample in a special device, cutting out a section of fi…

Material Properties and ProcessingIndustrial Vision Systems and Defect DetectionTextile materials and evaluations

Cracking of Stressed Polyethylene

Jared B. DeCoste、F. Malm、V. T. Wallder1951-01-01Industrial & Engineering Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCracking of Stressed PolyethyleneJ. B. DeCoste, F. S. Malm, and V. T. WallderCite this: Ind. Eng. Chem. 1951, 43, 1, 117–121Publication Date (Print):January 1, 1951Publication History Published online1 May 2002Published inissue 1 January 1951https://pubs.acs.org/doi/10.1021/…

Mechanical Behavior of CompositesPolymer crystallization and propertiesAsphalt Pavement Performance Evaluation

Contribution à l'étude de l'antiferromagnétisme. Etude thermomagnétique des protoxydes de cobalt et de nickel

Charlotte Henry La Blanchetais1951-01-01Journal de physique

L'étude thermomagnétique du protoxyde de cobalt dans des champs relativement faibles (2 200 à 7 800 Oe) a mis en évidence un point de transition T λ à la température de l'anomalie de dilatation, soit 292° K, et une sensibilité au champ en sens inverse de celle que l'on observe chez les ferromagnétiques. Le protoxyde d…

Electron and X-Ray Spectroscopy TechniquesIron oxide chemistry and applicationsMetallurgical Processes and Thermodynamics

The Mechanism of the Inhibition of the Corrosion of Iron by Solutions of Sodium Orthophosphate

M. J. Pryor、M. Cohen1951-01-01Journal of The Electrochemical Society

Decimolar solutions of sodium orthophosphate passivate iron at p H. values above 7.25 in the presence of air. When the solutions are deaerated the phosphate reacts with the iron forming ; potential‐time and polarization curves indicate that this reaction is mainly under cathodic control. It is suggested that oxygen di…

Corrosion Behavior and Inhibition

Luminescence of Three Forms of Zinc Orthophosphate:Mn

Arthur L. Smith1951-01-01Journal of The Electrochemical Society

Three forms of zinc orthophosphate:manganese have been found. The α form corresponds in x‐ray diffraction pattern to the published values. The luminescence is green, the peak wavelength being 5540 Å. It is produced when manganese concentrations are below 1 mole per cent, or when higher concentrations are not heated ab…

Luminescence Properties of Advanced MaterialsInorganic Chemistry and MaterialsCrystal Structures and Properties