Journal of Research Volume 43

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.

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

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

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

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

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

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

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

Journal of Research of the National Bureau of Standards

Volume 43

Issue 1

Issue 2

Issue 3

Issue 4

Issue 5

Issue 6

Issue 1 July 1949

Issue 2 August 1949

Issue 3 September 1949

Issue 4 October 1949

Issue 5 November 1949

Issue 6 December 1949

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