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Displaying 51476 - 51500 of 73888

Carbon Monoxide Levels in Structure Fires: Effects of Wood in the Upper Layer of a Post-Flashover Compartment Fire.

November 1, 1998

Author(s)

B Y. Lattimer, U Vandsburger, R J. Roby

This experimental study was performed to determine the effects of wood pyrolyzing in a high-temperature, vitiated compartment upper layer on the environment inside the com-partment and an adjacent hallway. This was done by comparing species concentrations

Characterization and Metrology for ULSI Technology

November 1, 1998

Author(s)

David G. Seiler, Alain C. Diebold, W M. Bullis, Thomas J. Shaffner, R. C. McDonald, E. J. Walters

Concepts of a Performance-Based Building Regulatory System for the United States. Report of the 1996 Activities of the SFPE Focus Group on Concepts of a Performance-Based System for the United States.

November 1, 1998

Author(s)

B J. Beacham

The United States' building and fire communities have recently begun transitioning towards the implementation of performance-based building regulations and the use of performance-based fire safety engineering. As a means to facilitate discussion and gain

Constant-Pressure Molecular Dynamics Investigation of Cholesterol Effects in a Dipalmitoylphosphatidylcholine Bilayer

November 1, 1998

Author(s)

K Tu, M L. Klein, D Tobias

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 compare the results to our previous simulation of a pure DPPC bilayer. The interlamellar spacing

Deep Ultraviolet Laser Metrology for Semiconductor Photolithography

November 1, 1998

Author(s)

Marla L. Dowell, Christopher L. Cromer, Rodney Leonhardt, Thomas Scott

Demineralizing Effect of Dental Cements on Human Dentin

November 1, 1998

Author(s)

Y Shimada, Y Kondo, S Inokoshi, J Tagami, Joseph M. Antonucci

This study was undertaken to verigy the hypothesis that dentin surfaces are demineralized during placement of four kinds of chemically setting cements (zinc phosphate cement, luting glass-ionomer cement, restorative glass-ionomer cement, and zinc

Development of a Bolometer Detector System for the NIST High Accuracy Infrared Spectrophotometer

November 1, 1998

Author(s)

Yuqin Zong, Raju V. Datla

A bolometer detector system is developed for the high accuracy infrared spectropho-meter at the National Institute of Standards and Technology (NIST) to provide maximum sensitive, spatial uniformity and linearity of response covering the entire infrared

Diagnostics of 'Colossal' Magnetoresistance Manganate Films by Raman Spectroscopy

November 1, 1998

Author(s)

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 the temperature range from 6 K to 300 K phonon spectra of La 0.7Ca 0.3MnO 3 films exhibit

Effect of Ignition Conditions on Upward Flame Spread on a Composite Material in a Corner Configuration

November 1, 1998

Author(s)

Thomas J. Ohlemiller, Thomas G. Cleary, John R. Shields

This paper focuses on the issue of fire growth on composite materials beyond the region immediately subjected to an ignition source. Suppression of this is one of the key issues in realizing the safe usage of composite structural materials. A vinyl ester

Effect of Polymer Molecular Weight on the Adsorption of Polyacrylic Acid at the Alumina-Water Interface

November 1, 1998

Author(s)

D Santhiya, G Nandini, K A. Natarajan, S G. Malghan

The adsorption and electrokinetic characteristics of alumina suspensions in the presence of polyacrylic acid as a dispersant have been studied. The adsorption isotherms exhibit high-affinity Langmuirian behavior. The adsorption density decreases with

Effect of Powder Grinding on Hydroxyapatite Formation in a Polymeric Calcium Phosphate Cement Prepared from Tetracalcium Phosphate and Poly[Methyl Vinyl Ether-Maleic Acid]

November 1, 1998

Author(s)

Y Matsuya, S Matsuya, Joseph M. Antonucci, S. Takagi, Laurence C. Chow, A Akamine

The primary aim of this study was to determine if cement based on poly(methyl vinyl ether-maleic acid) (PMVE-Ma) and tetracalcium phosphate (TTCP) resulted in hydroxyapatite (OHAp) formation. In addition, the mechanical strength of this type of polymeric

Effect of Temperature on Electron Attachment to and Negative Ion States of CCl 2 F 2

November 1, 1998

Author(s)

Yicheng Wang, Loucas G. Christophorou, J. K. Verbrugge

The effect of temperature on electron attachment to dichlorodifluoromethane (CCl 2F 2) has been investigated for temperatures up to 500 K and for mean electron energies from thermal to 1.0 eV using an electron swarm method. The measurements were made in

Elastic-Strain Tensor by Rietveld Refinement of Diffraction Measurements

November 1, 1998

Author(s)

Davor Balzar, R B. Voneele, K Bennett, H M. Ledbetter

By collecting diffraction patterns at different specimen orientations, the procedure to obtain all components of the elastic-strain tensor by Rietveld refinement is described. It is shown that the refined lattice parameters yield the hydrostatic strain

Electrical Properties and Dielectric Relaxation of DNA in Solution

November 1, 1998

Author(s)

James R. Baker-Jarvis, Chriss A. Jones, Billy F. Riddle

In this report we overview and summarize the electrical properties and dielectric relaxation of solvenated DNA.

Electronics and Electrical Engineering Laboratory Technical Progress Bulletin 98-1, Covering Laboratory Programs, January to March 1998, with 1997-1998 EEEL Events Calendar

November 1, 1998

Author(s)

J M. Rohrbaugh

This is the fifty-ninth issue of a quarterly publication providing information on the technical work of the National Institute of Standards and Technology, Electronics and Electrical Engineering Laboratory. This issue of the EEEL Technical Progress

Equilibrium Structure of Hydrogen-Bonded Polymer Blends

November 1, 1998

Author(s)

C Zhou, Erik K. Hobbie, Barry J. Bauer, Charles C. Han

Deuterium-labeled polystyrene modified by random distributions of the comonomer p-(1,1,1,3,3,3-hexaflouro-2-hydroxyisopropyl)-α-Methyl-styrene [DPS(OH)] has been blended with poly (butyl methacrylate) (PBMA) and studied with small-angle neutron scattering

Evaluation of the External Force Term in the Discrete Boltzmann Equation

November 1, 1998

Author(s)

Nicos Martys, X Shan, H Chen

A representation of the forcing term in the Boltzmann equation based on Hermite expansion of the Boltzmann distribution function in velocity phase space is derived. Based on this description of the forcing term, a systematic comparison of previous Lattice

Evolution of Microstructure in the Liquid and Crystal Directions in a Quenched Block Copolymer Melt and Its Implication on Phase Transition Mechanisms

November 1, 1998

Author(s)

N P. Balsara, B A. Garetz, M C. Newstein, Barry J. Bauer, T J. Prosa

Evolution of the disorder-to-order transition within a block copolymer is studied by the thermal quenching of samples from the melt to an ordered state. The ordered state consists of cylinders arranged on a hexagonal lattice and has liquid crystalline

Exposure Systems

November 1, 1998

Author(s)

Martin Misakian

Formal Specification, Verification, and Automatic Test Generation of ATM Routing Protocol: PNNI

November 1, 1998

Author(s)

David E. Cypher, Dongjin Lee, M Martin-Villalba, C A. Prins, David H. Su

This paper presents an effort to use formal tools to model, validate,and generate test suites for the ATM network routing protocol calledPrivate Network-Network Interface (PNNI). PNNIconsists of three layers of protocols: the Hello protocolfor identifying

Having it Both Ways: Distinguishable Yet Phase-Coherent Mixtures of Bose-Einstein Condensates

November 1, 1998

Author(s)

Eric A. Cornell, D S. Hall, M R. Matthews, C E. Wieman

We have begun a series of experiments on mixed bosonic quantum fluids. Our system is mixed Bose-Einstein condensates in dilute Rb-87. By simultancously trapping the atoms in two different hyperfine states, we are able to study the dynamics of component

High Critical-Current Measurements in Liquid and Gaseous Helium

November 1, 1998

Author(s)

Loren F. Goodrich, L T. Medina, Theodore C. Stauffer

Hydrogen Cyanide H 13 C 14 N Absorption Reference for 1530 nm to 1560 nm Wavelength Calibration SRM 2519

November 1, 1998

Author(s)

Sarah L. Gilbert, William C. Swann, Chih-Ming Wang

This Standard Reference Material (SRM) is intended for use in calibrating the wavelength scale of wavelength measuring equipment in the spectral region from 1528 nm to 1563 nm. SRM 2519 is an optical-fiber-coubled absorption cell containing hydrogen

Improving Pitch and Step Height Measurements Using the Calibrated Atomic Force Microscope

November 1, 1998

Author(s)

R Koning, Ronald G. Dixson, Joseph Fu, V W. Tsai

No abstract.

Interpretation of the SI for the United States and Federal Government Metric Conversion Policy

November 1, 1998

Author(s)

Barry N. Taylor

Advanced communications
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