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Journals

A Scheme for Transformation of Tolerance Specifications to Generalized Deviation Space for Use in Tolerance Synthesis and Analysis

July 1, 2002

Author(s)

H Wang, N Pramanik, Utpal Roy, Sudarsan Rachuri, Ram D. Sriram, Kevin W. Lyons

Traditionally tolerances for manufactured parts are specified using symbolic schemes as per ASME or ISO standards. To use these tolerance specifications in...

Histopathologic Reaction of a Calcium Phosphate Cement for Alveolar Ridge Augmentation

July 1, 2002

Author(s)

A Sugawara, K Fujikawa, S K. Kusama, M Nishiyama, S Murai, Shozo Takagi, Laurence Chow

The objective of the present study was to evaluate the feasibility of using a calcium phosphate cement (CPC) in the reconstruction of a defective alveolar ridge...

Reliability Improvements in Repair Welding of High Strength Steels

July 1, 2002

Author(s)

Ivan Samardzic, Thomas A. Siewert

Engineers often have to deal with repair of weldments after they have been put into service. Here, the concern is that the service environment may have changed...

Measurement and Simulation of the Indoor Air Quality Impact of Gaseous Air Cleaners in a Test Home

July 1, 2002

Author(s)

Cynthia H. Reed, Steven J. Nabinger, Steven Emmerich

Residential and commercial gaseous air cleaning technologies have not gained wide acceptance in the marketplace, in part due to the lack of performance data...

Continous Measurements of Air Change Rates in an Occupied House for One Year: The Effect of Temperature, Wind, Fans, and Windows

July 1, 2002

Author(s)

L A. Wallace, Steven Emmerich, Cynthia H. Reed

A year-long investigation of air change rates in an occupied house was undertaken to establish the effects of temperature, wind velocity, use of exhaust fans...

Crystal Structure of Ba₂₇Fe₁₆Ti₃₃O₁₁₇

July 1, 2002

Author(s)

T Siegrist, Terrell A. Vanderah, C Svensson, Robert S. Roth

Single-crystal X-ray diffraction studies indicate that the compound Ba 27Fe 16Ti 33O 117- crystallizes in the rhombohedral space group R-3m, with a hexagonal...

Controlled Barrier Modification in Nb/NbOx/Ag Metal Insulator Metal Tunnel Diodes

June 15, 2002

Author(s)

Erich N. Grossman, Todd E. Harvey, Carl D. Reintsema

The nonlinear electrical transport properties of metal-insulator-metal (MIM) tunnel diodes based on a barrier of naturally grown niobium oxide have been...

Silicon Nanostructures Fabricated by Scanning Probe Oxidation and Tetramethyl Ammonium Hydroxide Etching

June 15, 2002

Author(s)

F S. Chien, W F. Hsieh, S Gwo, Andras Vladar, John A. Dagata

Fabrication of silicon nanostructures is a key technique for the development of monolithically integrated optoelectronic circuits. We demonstrate that the...

On the Detection of Chemically-Induced Hot Electrons in Surface Processes: From X-ray Edges to Schottky Barriers

June 14, 2002

Author(s)

John William Gadzuk

The potential involvement of electron-hole pair excitations in atomic/molecular processes such as sticking/adsorption/dissociation at metal surfaces has long...

Evaluation Methodologies for Information Management Systems

June 11, 2002

Author(s)

Emile L. Morse

The projects developed under the auspices of the Defense Advanced Research Projects Agency (DARPA) Information Management (IM) program are innovative approaches...

Self-assembled Monolayers of Methyl 1-thiahexa(ethylene oxide) for the Inhibition of Protein Adsorption

June 11, 2002

Author(s)

David J. Vanderah, Gintaras Valincius, Curtis W. Meuse

Self-assembled monolayers (SAMs) of methyl 1-thiahexa(ethylene oxide) [HS(CH 2CH 2O) 6CH 3] on gold were evaluated for their inhibition of non-specific protein...

On differential thermal analyzer curves for the melting and freezing of alloys

June 11, 2002

Author(s)

William J. Boettinger, Ursula R. Kattner

Laser-Focused Nanofabrication: Beating of Two Atomic Resonances

June 10, 2002

Author(s)

E Jurdik, K van, J Hohlfeld, T Rasing, Jabez J. McClelland

We deposit a laser-collimated chromium beam onto a substrate through a laser standing-wave (SW) tuned above the atomic resonance at either of the two 52Cr...

Effect of the Interfacial Bond Quality on the Direction of the Polymerization Shrinkage Flow in Resin Composite Restorations

June 1, 2002

Author(s)

B H. Cho, Sabine H. Dickens, J H. Bae, C G. Chang, H H. Son, C M. Um

Shrinkage in light-curing composite resin composites is assumed to be directed toward the light source. However, the strong bond at the dentin-resin interface...

Polymer Composites with High Dielectric Constant

June 1, 2002

Author(s)

C. K. Chiang, R Popielarz

A very high dielectric constant polymer composite film system is presented. The new polymer composite film uses cyanoresin polymer filled with ferroelectric...

Ceramic Based Layer Structures for Biomechanical Applications

June 1, 2002

Author(s)

Brian R. Lawn

A survey of recent advances in the analysis of ceramic-based layer structures for biomechanical applications is presented. Data on model layer systems...

Comparative Statistical Analysis of Test Parts Manufactured in Production Environments

June 1, 2002

Author(s)

David E. Gilsinn, Alice V. Ling

Estimating error uncertainties arising in parts produced on machine tools in production machine shops is not a well understood process. The current study...

Estimation of the Neutron Lifetime: Comparison of Methods Which Account for Background

June 1, 2002

Author(s)

Kevin J. Coakley, Grace L. Yang

In the first stage of each run of a neutron lifetime experiment, a magnetic trap is filled with neutrons. In the second stage of each run, neutron decay events...

Calibration of a Stopping Power Model for Silicon Based on Analysis of Neutron Depth Profiling and Secondary Ion Mass Spectrometry Measurements

June 1, 2002

Author(s)

Kevin J. Coakley, Huaiyu H. Chen-Mayer, George P. Lamaze, David S. Simons, P E. Thompson

We measure the boron concentration versus depth profile within a silicon sample with four delta-doped planes by secondary ion mass spectrometry. In a neutron...

Relationship of Dentin Shear Bond Strengths to Different Laboratory Test Designs

June 1, 2002

Author(s)

Sabine H. Dickens, M F. Milos

Purpose: To compared different 6 shear bond test procedures using 2 primers by evaluating differences in strength and fracture surfaces. Materials and Methods...

Crystal Structure of the Compound Bi₂Zn_2/3Nb_4/3O₇

June 1, 2002

Author(s)

Igor Levin, T G. Amos, J Nino, Terrell A. Vanderah, I Reaney, C A. Randall, M T. Lanagan

The crystal structure of Bi2Zn2/3Nb4/3O7 was determined using a combination of electron, X-ray and neutron powder diffraction. The compound crystallizes with a...

Materials Design of Ceramic Based Layer Structures for Crowns

June 1, 2002

Author(s)

Brian R. Lawn, Y N. Deng, Isabel K. Lloyd, E D. Rekow, Victoria Thompson

Explicit fracture mechanics relations for the onset of critical damage in crown-like ceramic layers on soft polymeric substrates subjected to contacts loads are...

Complex Polymorphic Behavior and Dielectric Properties of Perovskite-Related Sr(SR_1/3Nb_2/3)O₃

June 1, 2002

Author(s)

Igor Levin, Julia Y. Chan, J J. Scott, L Farber, Terrell A. Vanderah, James E. Maslar

The complex structural behavior of the perovskite-related compound Sr4Nb2O9 (=Sr(Sr1/3Nb2/3)O3) has been investigated using electron, X-ray, and neutron powder...

An Analytical Approximation for a Size-Broadened Profile Given by the Lognormal and Gamma Distributions

June 1, 2002

Author(s)

N Popa, Davor Balzar

We consider the size-broadened profile given by the lognormal and gamma size distributions of spherical crystallites. We show that the Voigt function and its...

On Differential Thermal Analyzer Curves for the Melting and Freezing of Alloys

June 1, 2002

Author(s)

William J. Boettinger, Ursula R. Kattner

A model for the response of differential thermal analysis measurement techniques to melting and freezing is explored. The model, which uses a system of ordinary...

Bose-Einstein Condensation in a Dilute Gas: The First 70 Years and Some Recent Experiments

June 1, 2002

Author(s)

Eric A. Cornell, C E. Wieman

Bose-Einstein condensation of dilute gases offer rich field study fundamental quantum-mechanical processes, manipulation of the speed at which light propagates...

Nonresonant Effects in One- and Two-Photon Transitions

June 1, 2002

Author(s)

U Jentschura, Peter J. Mohr

We investigate nonresonant contributions to Rayleigh scattering cross sections in atomic transitions. The problematic nonresonant contributions set a limit to...

Longitudinal Spin Waves in a Dilute Bose Gas

June 1, 2002

Author(s)

J E. Williams, T Nikuni, Charles W. Clark

We present a kinetic theory for a dilute noncondensed Bose gas of two-level atoms that predicts the transient spin segregation observed in a recent experiment...

A High-Energy X-Ray Spectrometer Diagnostic for the OMEGA Laser

June 1, 2002

Author(s)

Lawrence T. Hudson, Albert Henins, R Deslattes, J Seely, G Holland, R Atkin, L Marlin, D D. Meyerhofer, C Stoeckl

A new x-ray diagnostic has been commissioned recently at the OMEGA laser facility at the University of Rochester. It is a transmission curved crystal...

Phase-Coherent Synthesis of Optical Frequencies and Waveforms

June 1, 2002

Author(s)

Jun Ye, Steven T. Cundiff, S M. Foreman, T M. Fortier, John L. Hall, K W. Holman, D J. Jones, J D. Jost, H C. Kapteyn, K A. Leeuwen, L -. Ma, M M. Murnane, J L. Peng, R K. Shelton

Precision phase control of an ultrawide-bandwidth optical-frequency comb has produced remarkable and unexpected progress in both areas of optical-frequency...

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