Browsing Citations Only by Title
Now showing items 351-370 of 990
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Flow boiling heat transfer with binary and ternary mixtures in microfin tubes
(American Society of Mechanical Engineers (ASME), 2000)An experimental setup was designed and fabricated to test the flow boiling heat transfer performance of microfin tubes. Five microfin tubes were tested with pure refrigerants. Two tubes were selected for further testing ... -
Flow boiling maps for water, R-22 and R-134a in the saturated region
(International heat transfer conference, 1990-08)The development of a flow boiling map applicable to different fluids was reported by Kandlikar (1989). In the present paper, specific maps are presented for water, R-22 and R-134a in the saturated boiling region to serve ... -
Fluid flow modeling for flip chip on board assembly
(SMTA: SMTA Pan Pacific Microelectronics Symposium, 2002) -
Focal plane detector array developments
(International Society for Optical Engineering (SPIE), 2002-06)n/a -
Formation of single-wall carbon nanotube superbundles
(The American Chemical Society: Chemistry of Materials, 2000-03)Since their discovery in 1993, carbon single-wall nanotubes (SWNTs) have been of great interest because of their expected novel electronic, mechanical, and gas adsorption properties. Difficulties arise in measuring these ... -
Fractal dimensions in tunneling processes and effects of environmental fluctuations
(World Scientific Publishing, 1998-03)We study electron tunneling between two infinte potential square wells connected via an opaque barrier and find that time evolution of the probability of the presence of a Gaussian wave packet, localized initially in one ... -
Fractional correlations based on the modified fractional order Fourier transform
(Society of Photo-Optical Instrumentation Engineers (SPIE) - Optical Engineering, 1998-01)Based on the modified fractional order Fourier transform (MFROFT), we introduce a modified fractional correlation operation (MFCO). We propose two systems to implement the MFCO experimentally. These are analyzed ... -
Frequency entrainment in optically injected semiconductor lasers
(American Physical Society, 1997-03-24)We theoretically predict and experimentally demonstrate the phenomenon of frequency entrainment in optically injected semiconductor lasers. The laser exhibits nonlinear subharmonic and ultraharmonic resonances for appropriate ... -
Frequency-to-voltage converter based on Bloch oscillations in a capacitively coupled GaAs-GaxAl1-xAs quantum well
(American Physical Society, 1993-09-15)A charged capacitor which is placed with a semiconductor in a closed loop will normally discharge in a characteristic time τ=1/RC. We show, however, that if a semiconductor of high purity is subjected to a rf bias with ... -
From linearity towards chaos: Basic studies of relativistic backward-wave oscillators
(American Physical Society, 1992-09-14)Recent experimental studies have revealed for the first time some basic features of pulsed. relativistic (300-600 keY) backward-wave oscillators such as starting current, axial mode locking, and multifrequency operation. ... -
Frontal-view face detection and facial feature extraction using color, shape and symmetry based cost functions
(Elsveier - Pattern Recognition Letters, 1998)We describe an algorithm for detecting human faces and facial features, such as the location of the eyes, nose and mouth. First, a supervised pixel-based color classifier is employed to mark all pixels that are within a ... -
Fuel cell applications of nanotube-metal supported catalysts
(Materials Research Society Proceedings Fall 2002: Materials for Fuel Cells and Fuel Processors, 2002-12-02)Novel carbon materials with nanometer dimensions are of potentially significant importance for a number of advanced technological applications. Within this report we describe the results for the electrochemical characterization ... -
Fuel cell applications of single wall carbon nanotubes
(American Institute of Aeronautics and Astronautics: International Energy Conversion Engineering Conference, 2003-08-17)Novel carbon materials with nanometer dimensions are of potentially significant importance for a number of advanced technological applications. Currently, considerable interest exists in the possible applications of single ... -
Functional polymers in the generation of colloidal dispersions of amorphous selenium
(American Chemical Society: Macromolecules, 1980-09)Stable colloidal dispersions of red, amorphous selenium have been prepared by the reduction of selenious acid in dilute aqueous solutions of hydrazonium polyacrylate. The initially formed particles average 1000-1200 A, in ... -
A functional update of the Escherichia coli K-12 genome
(BioMed Central: Genome Biology, 2001-08-20)Background: Since the genome of Escherichia coli K-12 was initially annotated in 1997, additional functional information based on biological characterization and functions of sequence-similar proteins has become available. ... -
Fundamental issues related to flow boiling in minichannels and microchannels
(Elsevier, 2002)Flow boiling in small hydraulic diameter channels is becoming increasingly important in many diverse applications. The previous studies addressing the effects of the channel size on the flow patterns, and heat transfer ... -
Fundamental issues related to flow boiling in minichannels and microchannels
(Elsevier, 2002-09)Flow boiling in small hydraulic diameter channels is becoming increasingly important in many diverse applications. The previous studies addressing the effects of the channel size on the flow patterns, and heat transfer ... -
Fusion of color and edge information for improved segmentation and edge linking
(Image and vision computing, Elsevier, 1997-10)We propose a new method for combined color image segmentation and edge linking. The image is first segmented based on color information only. The segmentation map is modeled by a Gibbs random field, to ensure formation of ...