U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 1126 - 1150 of 1415

Laser Cooling of Erbium Atoms

May 21, 2005
Author(s)
Jabez J. McClelland, H Y. Ban, Marcus Jacka, James L. Hanssen, Joseph Reader
… We have identified five closed, or nearly-closed, J ? J + 1 transitions in atomic erbium at wavelengths of 401 nm, 583 … nm lines and have determined their lifetimes to be (5.6 ? 1.4) s and (20 ? 4) s, respectively. Calculations of the 1299 …

Flame Extinguishment in a Cup-Burner Apparatus

March 1, 2005
Author(s)
F Takahashi, Gregory T. Linteris, V Katta
… CF 3 H, (11.7 0.8) %; CO 2 , (15.7 0.6) %; N 2 , (25.9 1.0) %; He, (26.7 1.1) %; and Ar, (37.3 1.5) %; computation: CF 3 H, 10.1 %; CO 2 , 14.5 % (or 16.1 % with different kinetic parameters for a …

Extinguishment of Cup-Burner Flames in Low Gravity

January 1, 2005
Author(s)
F Takahashi, Gregory T. Linteris, V Katta
… oxidizing environments were:Experiment Computation Air/1g/1 atm (15.7 0.6) % 14.5 % (16.1 %) Air/1g/0.7 atm (15.4 0.5) % 13.5 % 30 % O2/1g/1 atm …

Certification of a Polystyrene Synthetic Polymer, SRM 2888

November 1, 2003
Author(s)
Charles M. Guttman, William R. Blair, B M. Fanconi, R J. Goldschmidt, William E. Wallace, S Wetzel, David L. VanderHart
… 7.19 x 10 +3 g/mol with a sample standard deviation of 0.14 x 10 +3 g/mol. A combined expanded uncertainty for this …

Simulation of Heat Exchangers of a Window Air Conditioner Retrofitted with R-407C

May 1, 2003
Author(s)
S Devotta, A S. Padalkar, N K. Sane, Piotr A. Domanski, N N. Sawant
… typical Indian window air conditioner of capacity 5.13kW (1.5 TR) has been selected for the study. The performance of … outdoor conditions with respect to HCFC-22. R-407C has 6.1% lower condenser capacity for the lower outdoor conditions … C in the condenser and are higher in the range 10.3% to 14.1% than HCFC-22. The pressure drop of R-407C is lower in …

NbN Film Development for PHEB Devices

September 1, 2002
Author(s)
Eyal Gerecht, V. A. Bhupathiraju, Erich N. Grossman, Jeffrey W. Nicholson, Fernando Rodriguez-Morales, Dazhen Gu, Sigfrid Yngvesson
… films of thickness of 10 nm or even thinner with Tc of 14 K can be grown on MgO. The films are then evaluated by …

Refrigerant Flow Through Flexible Short-Tube Orifices

April 1, 2002
Author(s)
Y Kim, D L. O'Neal, William V. Payne, MD L. Farzad
… A series of tests for a R-22/lubricant mixture (1.2 % oil concentration) were performed with two flexible … a value of 9860 kPa. Both orifices had identical lengths (14.5 mm), entrance diameters (2.06 mm), and exit diameters …

TRC Thermodynamics Tables - Non-Hydrocarbons Supplement NH97

July 9, 2007
Author(s)
Michael D. Frenkel
… 1. Table 23-2-1-(1.10292)-db: Pages db-5172.0 and db-5172.1 New table for … entropy, and heat capacity at 298.15 K and 1 bar. 14. Tables 23-9- to 23-9-2-(15.10180)-r through -x: Pages r-, …

Characterization of Ternary Compounds in the BaO:Fe 2 O 3 :TiO 2 System: Ba 6 Fe 45 Ti 17 O 106 and BaFe 11 Ti 3 O 23

January 1, 1999
Author(s)
Terrell A. Vanderah, Winnie K. Wong-Ng, B H. Toby, V. M. Browning, Robert D. Shull, Richard G. Geyer, Robert S. Roth
… compound exhibits variable stoichiometry Ba 6 Fe 48-x Ti 14+x O 106 , with the Fe:Ti ratio dependent upon the partial … zero with the resulting stoichiometry Ba 6 Fe 48 Ti 14 O 106 (all Fe^3+^ and Ti 4+ ). The structures of Ba 6 Fe … Fe 45 Ti 17 O 106 : Space group C2/m (No. 12); a = 19.390(1), b = 20.260(1), c = 10.076(1) , = 105.27(1) ; V = …

Strengths and Limitations of Surface Texture Characterization Techniques

January 1, 2001
Author(s)
Theodore V. Vorburger
Surface finish is important to the function of a wide range of industrial components including highways, ship hulls and propellers, mechanical parts, semiconductors, and optics. Hence, many documentary standards have been developed for specifying surface
Displaying 1126 - 1150 of 1415
Was this page helpful?