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Displaying 55351 - 55375 of 74164

Real-Time Single-workstation Obstacle Avoidance Using Only Wide-Field Flow Divergence

August 1, 1996
Author(s)
Theodore(Ted) Camus, David Coombs, Martin Herman, Tsai Hong Hong
A real-time robot vision system is described which uses only the divergence of the optical flow field for both steering control and collision detection. The robot has wandered about the lab at 20 cm/s for as long as 26 minutes without collision. The entire

Stitching of Equatorial Profiles for Extended Spatial Range Assessment

August 1, 1996
Author(s)
P Sullivan, R E. Parks, Lianzhen Shao
This paper describes a method for stitching multiple overlapping interferometric measurements of the equator of a high quality sphere to produce a single profile representing the roundness of the ball. The resulting optical profile measurement is compared

Comparison of Submicron Particle Analysis by Auger Electron Spectroscopy, Time-of-Flight Secondary Ion Mass Spectrometry, and Secondary Electron Microscopy With Energy Dispersive X-Ray Spectroscopy.

July 31, 1996
Author(s)
George W. Mulholland, K D. Childs, D Narum, L A. LaVanier, P M. Lindley, B W. Schueler, A C. Diebold
Particulate contamination can result in a significant yield loss during semiconductor device fabrication. As device design rule dimensions decrease the critical defect size also decreases, resulting in the need to analyze smaller defects. Current

Chemical Effects of CF3H in Extinguishing Counterflow CO/Air/H2 Diffusion Flames

July 28, 1996
Author(s)
G. S. Fallon, H K. Chelliah, Gregory T. Linteris
The relative importance of introducing CF3H as a fire suppressant with the oxidizer or the fuel stream, and its chemical and thermal effects on the extinction condition of counterflow CO/air/H2 diffusion flames, are investigated both experimentally and

Chemical Effects of CF3H in Extinguishing Counterflow CO/Air/H2 Diffusion Flames.

July 28, 1996
Author(s)
Gregory T. Linteris, G S. Fallon, H K. Chelliah
The relative importance of introducing CF3H as a fire suppressant with the oxidizer or the fuel stream, and its chemical and thermal effects on the extinction condition of counterflow CO/air/H2 diffusion flames, are investigated both experimentally and

Effect of Halogenated Flame Inhibitors on C1-C2 Organic Flames

July 28, 1996
Author(s)
T Noto, Valeri I. Babushok, Donald R. Burgess Jr., Anthony P. Hamins, Wing Tsang, A W. Miziolek
The influence of CF3Br, CF3I, CF4, CHF3, C2F6, and C2HF on laminar flame propagation in mixtures of CH4, CH3OH, C2H6, and C2H4 with air has been determined by numerical simulaitons. Comparisons are made with experimental results and earlier calculations

Global Properties of Gaseous Pool Fires

July 28, 1996
Author(s)
Anthony P. Hamins, K Konishi, Robert P. Borthwick, Takashi Kashiwagi
Global flame properties were measured as a function of fuel mass in a series of experiments conducted on gaseous pool fires burning in a quiescent environment. The measurements included radiative heat loss, heat transfer to the burner, and sensible

Suppression of a Baffle-Stabilized Spray Flame by Halogenated Agents

July 28, 1996
Author(s)
Anthony P. Hamins, Cary Presser, L Melton
A series of experiments was conducted on baffle-stabilized spray flames in an effort to provide an improved understanding of the influence of various parameters on the processes controlling flame suppression. Measurements were made of the agent mass

Thin-Filament Pyrometry in Flickering Laminar Diffusion Flames

July 28, 1996
Author(s)
William M. Pitts
This paper describes an experimental system for thin-filament pyrometry (TFP) in acoustically phase-locked flickering laminar methane/air diffusion flames. The physical basis of the technique is discussed. The experiment utilizes a 15-mu m beta-SiC fiber

104-fold isotope effect: Vibrational predissociation in ArDF

July 1, 1996
Author(s)
S Davis, J T. Farrell, D T. Anderson, David Nesbitt
High-resolution sub-Doppler line shapes for ArDf excited into the v DF=1 manifold are recorded using a turnable laser/slit supersonic expantion near-infrared spectrometer. Direct spectroscopic evidence is obtained for vibrational predissociation (τless
Displaying 55351 - 55375 of 74164
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