An official website of the United States government
Here’s how you know
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.
William E. Wallace, Charles M. Guttman, Joseph M. Antonucci
Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry was used to deduce the three-dimensional structure of a complex silsesquioxane
G Beaucage, Daniel A. Fischer, Gabrielle G. Long, S Rane, D W. Schaefer
Carbon black is a common polymer additive that is used for reforcement and for its ability to enhance physical properties such as conductivity. This paper
V B. Podobedov, D B. Romero, A Weber, Joseph P. Rice, R Schreekala, M Rajeswari, R Ramesh, T Venkatesan, H D. Drew
Polarized Raman scattering by phonons is used to characterize thin films prepared by laser ablation of a lanthanum manganese oxide target. It was found that in
J L. Domenech, D Bermejo, J.- M. Flaud, Walter J. Lafferty
The high resolution Raman spectra of the Ņ 4 bands of 11B 2H 6 and 11B 10BH 6 have been recorded and analyzed. The recordings have been made using a high
We report a 1.4-ns constant-pressure molecular dynamics simulation of cholesterol at 12.5 mole% in a dipalmitoylphosphatidylcholine [DDPC] bilayer at 50 C, and
We describe the use of Bayesian inference to include prior information about the value of the measurand in the calculation of measurement uncertainty. Typical
Document images belong to a unique class of images where the information content is contained in the language represented by a series of symbols on the page
The paper reviews six recent efforts to better understand performance measurements on information retrieval (IR) within the framework of the Text REtrieval
Yadu D. Tewari, J Chen, Marcia J. Holden, K. N. Houk, Robert N. Goldberg
A thermodynamic investigation of the conversion of chorismate 2-(aq) to {pyruvate -(aq) + 4-hydroxybenzoate -(aq)} has been performed by using microcalorimetry
D S. Pallett, Jonathan G. Fiscus, John S. Garofolo, Alvin F. Martin, Mark A. Przybocki
This paper documents the use of Broadcast News test materials in DARPA-sponsored Automatic Speech Recognition (ASR) Benchmark Tests conducted late in 1998. As
Lee J. Richter, T Petralli-Mallow, John C. Stephenson
We present a novel procedure for vibrationally-resolved sum-frequency generation (SFG) in which a broad-bandwidth IR pulse is mixed with a narrow-bandwidth
Y. M. Habib, D. E. Oates, G. Dresselhaus, M. Dresselhaus, Leila R. Vale, Ronald H. Ono
Microwave-frequency (rf) power-dependence measurements performed on thin-film Yba 2Cu 3O^d7-δ grain boundaries engineered on sapphire bicrystal substrates with
Simon G. Kaplan, Leonard M. Hanssen, Alan L. Migdall, G Lefever-Button
We have performed transmittance measurements of metal-film neutral density filters on ultrathin polymer substrates using both Fourier-transform infrared
A Fourier-transform infrared (FT-IR) spectrophotometer system is used to measure the transmittance of infrared band-pass filters as a function of wavelength
We have measured the near-normal ordinary ray transmittance and reflectance of crystalline Al 2O 3 from 1.6 m to 11 m and temperatures from 296 K to 582 K. The
N G. Abdulaev, G N. Karaschuk, Jane E. Ladner, D L. Kakuev, A V. Yakhyaev, M. Tordova, I O. Gaidarov, V I. Popov, J H. Fujiwara, D Chinchilla, E Eisenstein, G L. Gilliland, K D. Ridge
In this paper we present results of work done on large image browsing. Advances in compression and transmission have allowed efficient usage of storage and
We present an emf-temperature reference function for platinum versus palladium (Pt/Pd) thermocouples in air for the range 0 degrees {Celsius} to 1500 degrees
A F. Lagalante, C Wood, A M. Clarke, Thomas J. Bruno
The Kamlet-Taft parameters for 25 glycol ethers and aqueous solutions of the 25 glycol ethers were measured. Values for the three Kamlet-Taft parameters; the
The solid-liquid equilibrium of hard dumbbells with embedded point dipoles is calculated using a generilized van der Waals thery to account for long range
Joseph M. Conny, Cedric J. Powell, Lloyd A. Currie
Standard test data(STD) are simulations of analytical instrument responses that help determine the veracity of computer-based, data analysis procedures that are
Proper balancing of the concentration of citrate ions in soft drinks is important in order to regulate cariogenic potential of these ions. The uptake, or ion
O Urakawa, O Yano, Q Tran-Cong, A Nakatani, Charles C. Han
The phase behavior of trans-stilbene-labeled polystyrene and poly [vinyl methyl ether] mixtures was investigated by using small angle neutron scattering. It was
Robert D. McMichael, Mark D. Stiles, P J. Chen, William F. Egelhoff Jr.
This paper describes ferromagnetic resonance (FMR) and magnetoresistive measurements of thin magnetic films coupled to antiferromagnetic films. First, FMR
In this article, we examine the ability to distinguish between relaxation functions with data over limited range of frequency. It is demonstrated that over