Journal of Research Volume 43

Journal of Research of the National Bureau of Standards

The Journal of Research of NIST and its predecessors report NIST research and development in metrology and related fields of: physical science, engineering, applied mathematics, statistics, biotechnology, information technology.

For additional information see: About the Journal

Volume 43

ISSN: 0091-0635

Issue 1	Issue 2
Issue 3	Issue 4
Issue 5	Issue 6

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Issue 1 July 1949

Volume changes observed in small concrete cylinders during freezing and thawing using a mercury displacement dilatometer, p. 1
Valor, Rudolph C.
http://dx.doi.org/10.6028/jres.043.001

Electrophoresis of modified collagen, p. 29
Cassel, James M.; Kanagy, Joseph R.
http://dx.doi.org/10.6028/jres.043.002

Infrared absorption spectra of cyclo-hydrocarbons, p. 37
Plyler, Earle K.; Acquista, Nicolo
http://dx.doi.org/10.6028/jres.043.003

Low-temperature performance of radiosonde electric hygrometer elements, p. 49
Wexler, Arnold
http://dx.doi.org/10.6028/jres.043.004

Refractive index of natural rubber for different wavelengths, p. 57
Wood, Lawrence A.; Tilton, Leroy W.
http://dx.doi.org/10.6028/jres.043.005

Metastable transitions in mass spectra of hydrocarbons, p. 65
Bloom, Evelyn G.; Mohler, Fred L.; Wise, C.E.; Wells, Edmund J.
http://dx.doi.org/10.6028/jres.043.006

Impedance characteristics of some experimental broad-band antennas for vertical incidence ionosphere sounding, p. 71
Cones, H.N.
http://dx.doi.org/10.6028/jres.043.007

Formulas for the percentage points of the distribution of the arithmetic mean in random samples from certain symmetrical universes, p. 79
Chand, Uttam
http://dx.doi.org/10.6028/jres.043.008

Refractive indices of thallium bromide-iodide crystals for visible and infrared radiant energy, p. 81
Tilton, Leroy W.; Plyler, Earle K.; Stephens, Robert E.
http://dx.doi.org/10.6028/jres.043.009

Fundamental aspects of the reaction of oxygen with carbon adsorbents, p. 87
Loebenstein, William V.; Pennington, Neil L.
http://dx.doi.org/10.6028/jres.043.010

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Issue 2 August 1949

Mass spectrum of pentaborane (B₅H₉), p. 97
Dibeler, Vernon H.; Mohler, Fred L.; Williamson, Laura; Reese, Robert M.
http://dx.doi.org/10.6028/jres.043.011

Effect of chromium plating on the endurance limit of steels used in aircraft, p. 101
Logan, Hugh L.
http://dx.doi.org/10.6028/jres.043.012

Heats of combustion and formation of cyclopropane, p. 113
Knowlton, John W.; Rossini, Frederick D.
http://dx.doi.org/10.6028/jres.043.013

Influence of strain rate and temperature on the creep of cold-drawn ingot iron, p. 117
Jenkins, William D.; Digges, Thomas G.
http://dx.doi.org/10.6028/jres.043.014

Differences between the International Temperature Scales of 1948 and 1927, p. 133
Corruccini, Robert J.
http://dx.doi.org/10.6028/jres.043.015

An instrument for measuring longitudinal spherical aberration of lenses, p. 137
Washer, Francis E.
http://dx.doi.org/10.6028/jres.043.016

Volume dilatometry, p. 145
Bekkedahl, Norman
http://dx.doi.org/10.6028/jres.043.017

Relation between entrance and exit pupils of telescopic systems, p. 157
Gardner, Irvine C.
http://dx.doi.org/10.6028/jres.043.018

Mechanisms for the formation of acetylglycosides and orthoesters from acetylglycosyl halides, p. 161
Isbell, Horace S.; Frush, Harriet L.
http://dx.doi.org/10.6028/jres.043.019

Studies on the flame photometer for the determination of Na₂O and K₂O in portland cement, p. 173
Eubank, William R.; Bogue, Robert H.
http://dx.doi.org/10.6028/jres.043.020

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Issue 3 September 1949

Ultra-microtomy by a new method, p. 183
Newman, Sanford B.; Borysko, Emil; Swerdlow, Max
http://dx.doi.org/10.6028/jres.043.021

Determination of nitrogen in steel, p. 201
Hague, John L.; Paulson, Rolf A.; Bright, Harry A.
http://dx.doi.org/10.6028/jres.043.022

Seasonal variation of ozone at Washington, D. C., p. 209
Stair, Ralph
http://dx.doi.org/10.6028/jres.043.023

Surface tension of molten zinc borates, p. 221
Shartsis, Leo; Canga, Rodrigo
http://dx.doi.org/10.6028/jres.043.024

A comparison of direct colorimetry of titanium pigments with their indirect colorimetry based on spectrophotometry and a standard observer, p. 227
Judd, Deane B.
http://dx.doi.org/10.6028/jres.043.025

Properties of calcium-barium titanate dielectrics, p. 237
Bunting, Elmer N.; Shelton, George R.; Creamer, Ansel S.
http://dx.doi.org/10.6028/jres.043.026

Heats, equilibrium constants, and free energies of formation of the dimethylcyclopentanes, p. 245
Epstein, Morton B.; Barrow, Gordon M.; Pitzer, Kenneth S.; Rossini, Frederick D.
http://dx.doi.org/10.6028/jres.043.027

Cathode heater compensation as applied to degenerative voltage-stabilized direct-current power supplies, p. 251
Ellenwood, Robert C.; Sorrows, Howard E.
http://dx.doi.org/10.6028/jres.043.028

Mechanical properties of laminated plastics at -70°, 77°, and 200° F, p. 257
Lamb, John J.; Albrecht, Isabelle; Axilrod, Benjamin M.
http://dx.doi.org/10.6028/jres.043.029

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Issue 4 October 1949

An absolute measurement of resistance by the Wenner method, p. 291
Thomas, James L.; Peterson, Chester; Cooter, Irvin L.; Kotter, F.R.
http://dx.doi.org/10.6028/jres.043.030

Directional effects in dielectric properties of molded rubber, p. 355
Scott, Arnold H.
http://dx.doi.org/10.6028/jres.043.031

Infrared absorption spectra of the liquid butenes and 1,3-butadiene, p. 365
Creitz, E.C.; Smith, Francis A.
http://dx.doi.org/10.6028/jres.043.032

Potential problems and capacitance for a conductor bounded by two intersecting spheres, p. 377
Snow, Chester
http://dx.doi.org/10.6028/jres.043.033

Electron optical observation of magnetic fields, p. 409
Marton, L.; Lachenbruch, S.H.
http://dx.doi.org/10.6028/jres.043.034

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Issue 5 November 1949

Some physical properties of porcelains in the systems magnesia-beryllia-zirconia and magnesia-beryllia-thoria and their phase relations, p. 429
Lang, S.M.; Maxwell, L.H.; Geller, R.F.
http://dx.doi.org/10.6028/jres.043.035

Laboratory flow tests of fixed spray nozzles with hydrocarbons and with air, p. 449
Shafer, M.R.; Bovey, H.L.
http://dx.doi.org/10.6028/jres.043.036

Mechanical production of very thin oscillator plates, p. 459
Sogn, Leland T.; Howard, Walter J.
http://dx.doi.org/10.6028/jres.043.037

Instability in shear of simply supported square plates with reinforced hole, p. 465
Kroll, Wilhelmina D.
http://dx.doi.org/10.6028/jres.043.038

Physical properties of sixty API-NBS hydrocarbons, p. 473
Forziati, Alphonse F.; Rossini, Frederick D.
http://dx.doi.org/10.6028/jres.043.039

Fatigue characteristics of electroformed sheets with and without iron backing, p. 477
Herschman, Harry K.; Thomas, Carroll
http://dx.doi.org/10.6028/jres.043.040

Interfacial instability and mixing in stratified flows, p. 487
Keulegan, Garbis H.
http://dx.doi.org/10.6028/jres.043.041

The remainder in linear methods of approximation, p. 501
Milne, W.E.
http://dx.doi.org/10.6028/jres.043.042

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Issue 6 December 1949

The freezing point of uranium, p. 513
Dahl, Andrew I.; Cleaves, Harold E.
http://dx.doi.org/10.6028/jres.043.043

Dissociation constants of weak bases from electromotive-force measurements of solutions of partially hydrolyzed salts, p. 519
Bates, Roger G.; Pinching, Gladys D.
http://dx.doi.org/10.6028/jres.043.044

A reduction-of-area gage for use at low temperatures, p. 527
Geil, Glenn W.; Carwile, Nesbit L.
http://dx.doi.org/10.6028/jres.043.045

Mass spectra of C₅H₈ isomers, p. 533
Mohler, Fred L.; Bloom, Evelyn G.; Williamson, Laura; Wise, C.E.; Wells, E.J.
http://dx.doi.org/10.6028/jres.043.046

A note on the numerical integration of differential equations, p. 537
Milne, W.E.
http://dx.doi.org/10.6028/jres.043.047

Measurement of the disintegration rate of sodium22 by the coincidence method, p. 543
Herson, J.L.
http://dx.doi.org/10.6028/jres.043.048

Submicroscopic structure of cellulose from nitrogen sorption measurements, p. 547
Hunt, Charles M.; Blaine, Raymond L.; Rowen, John W.
http://dx.doi.org/10.6028/jres.043.049

Vapor pressures and boiling points of sixty API-NBS hydrocarbons, p. 555
Forziati, Alphonse F.; Norris, William R.; Rossini, Frederick D.
http://dx.doi.org/10.6028/jres.043.050

Bond of concrete reinforcing bars, p. 565
Clark, Arthur P.
http://dx.doi.org/10.6028/jres.043.051

Analysis of the direct-current bolometer bridge, p. 581
Kerns, David M.
http://dx.doi.org/10.6028/jres.043.052

A method and apparatus for determining the ignition characteristics of plastics, p. 591
Setchkin, Nicholas P.
http://dx.doi.org/10.6028/jres.043.053