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1992

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Articles 11701 - 11730 of 12861

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The Effect Of Refrigerants On The Lubrication Of Rolling Element Bearings Used In Screw Compressors, F. P. Wardle, B. Jacobson, H. Dolfsma, E. Hoglund, U. Jonsson Jan 1992

The Effect Of Refrigerants On The Lubrication Of Rolling Element Bearings Used In Screw Compressors, F. P. Wardle, B. Jacobson, H. Dolfsma, E. Hoglund, U. Jonsson

International Compressor Engineering Conference

No abstract provided.


Using Shot Peening To Multiply The Life Of Compressor Components, J. S. Eckersley, B. Ferrelli Jan 1992

Using Shot Peening To Multiply The Life Of Compressor Components, J. S. Eckersley, B. Ferrelli

International Compressor Engineering Conference

No abstract provided.


Design And Calculation An A Miniature High-Pressure Compressor Used In Closed Throttle Refrigerator, Z. Gu, S. Ye, Y. Yu Jan 1992

Design And Calculation An A Miniature High-Pressure Compressor Used In Closed Throttle Refrigerator, Z. Gu, S. Ye, Y. Yu

International Compressor Engineering Conference

No abstract provided.


Effects Of Port Geometry, Dimensions And Position On The Performance Of A Rotary Compressor, A. B. Tramschek, K. T. Ooi Jan 1992

Effects Of Port Geometry, Dimensions And Position On The Performance Of A Rotary Compressor, A. B. Tramschek, K. T. Ooi

International Compressor Engineering Conference

No abstract provided.


Icons Of Experience, Michael E. Chambers Jan 1992

Icons Of Experience, Michael E. Chambers

Electronic Theses and Dissertations

No abstract provided.


Domestic Refrigeraror/Freezer Applications For New Technologies, W. A. Reed Jan 1992

Domestic Refrigeraror/Freezer Applications For New Technologies, W. A. Reed

International Refrigeration and Air Conditioning Conference

No abstract provided.


Refrigeration Control With Varying Condensing Pressures, R. H. Green, E. A. Technology, O. A. Vinnicombe, G. A. Ibrahim Jan 1992

Refrigeration Control With Varying Condensing Pressures, R. H. Green, E. A. Technology, O. A. Vinnicombe, G. A. Ibrahim

International Refrigeration and Air Conditioning Conference

No abstract provided.


Oxygen Radicals In Ulcerative Colitis, Charles F. Babbs Jan 1992

Oxygen Radicals In Ulcerative Colitis, Charles F. Babbs

Weldon School of Biomedical Engineering Faculty Publications

This article reviews the pathophysiologic concept that superoxide and hydrogen peroxide, generated by activated leukocytes, together with low-molecular-weight chelate iron derived from fecal sources and from denatured hemoglobin, amplify the inflammatory response and subsequent mucosal damage in patients with active episodes of ulcerative colitis. The putative pathogenic mechanisms reviewed are as follows: ( l ) Dietary iron is concentrated in fecal material owing to normally limited iron absorption. (2) Mucosal bleeding, characteristic of ulcerative colitis, as well as supplemental oral iron therapy for chronic anemia, further conspire to maintain or elevate mucosal iron concentration in colitis. (3) Fenton chemistry, driven …


Self‐Consistent Scattering Matrix Calculation Of The Distribution Function In Semiconductor Devices, Mark A. Stettler, Mark S. Lundstrom Jan 1992

Self‐Consistent Scattering Matrix Calculation Of The Distribution Function In Semiconductor Devices, Mark A. Stettler, Mark S. Lundstrom

Department of Electrical and Computer Engineering Faculty Publications

The scattering matrix approach is a new technique for solving the Boltzmann equation in devices. We report a self-consistent application of the technique to realistic silicon devices exhibiting strong nonlocal effects. Simulation of a hot-electron, n-i-n diode demonstrates that the new technique efficiently and accurately reproduces Monte Carlo results without the statistical noise, allowing much tighter convergence with Poisson’s equation.


Minority Hole Mobility In N+ Gaas, Michael L. Lovejoy, Michael R. Melloch, Mark S. Lundstrom, R. K. Ahrenkiel Jan 1992

Minority Hole Mobility In N+ Gaas, Michael L. Lovejoy, Michael R. Melloch, Mark S. Lundstrom, R. K. Ahrenkiel

Department of Electrical and Computer Engineering Faculty Publications

The minority hole diffusivity, or equivalently the hole mobility, was measured in n+GaAs with the zero‐field time‐of‐flight technique. The minority hole mobility was measured for the donor doping range of 1.3×1017 cm−3 to 1.8×1018 cm−3 and was found to vary from 235 to 295 cm2/V s. At the lower doping level, the minority hole mobility is comparable to the corresponding majority hole mobility, but at 1.8×1018 cm−3 the minority hole mobility was 30% higher than the majority carrier hole mobility. These results have important implications for the design of devices such …


An Iterative Interlacing Approach For Synthesis Of Computer-Generated Holograms, 0. K. Ersoy, J. Y. Zhuang, J. Brede Jan 1992

An Iterative Interlacing Approach For Synthesis Of Computer-Generated Holograms, 0. K. Ersoy, J. Y. Zhuang, J. Brede

Department of Electrical and Computer Engineering Technical Reports

A new approach to optimizing computer-generated holograms (CGH's) is discussed. The approach can be summarized most generally as hierarchically designing a number of holograms to add up coherently to a single desired reconstruction. In the case of binary holograms, this approach results in the interlacing (IT) and the iterative interlacing (IIT) techniques. In the IT technique, a number of subholograms are designed and interlaced together to generate the total binary hologram. The first sttbhologram is designed to reconstruct the desired image. The succeeding subholograms are designed to correct the remaining error image. In the IIT technique, the remaining error image …


Hierarchical Neural Networks With Forward-Backward Training, S-W. Deng, O. K. Ersoy Jan 1992

Hierarchical Neural Networks With Forward-Backward Training, S-W. Deng, O. K. Ersoy

Department of Electrical and Computer Engineering Technical Reports

A forward-backward training algorithm for parallel, self-organizing hierachical neural networks (PSHNN's) is described. Using linear algebra, it is shown that the forward-backward training of an n-stage PSHNN until convergence is equivalent to the pseudo-inverse solution for a single, total network designed in the leastsquares sense with the total input vector consisting of the actual input vector and its additional nonlinear transformations. These results are also valid when a single long input vector is partitioned into smaller length vectors. A number of advantages achieved are small modules for easy and fast learning, parallel implementation of small modules during testing, faster convergence …


Obtaining The Optimum Geometrical Parameters Of A Refrigeration Helical Screw Compressor, Y. Tang, J. S. Fleming Jan 1992

Obtaining The Optimum Geometrical Parameters Of A Refrigeration Helical Screw Compressor, Y. Tang, J. S. Fleming

International Compressor Engineering Conference

No abstract provided.


Characterization Of Thermal Processes In Scroll Compressors, T. C. Wagner, A. J. Marchese, D. J. Mcfarlin Jan 1992

Characterization Of Thermal Processes In Scroll Compressors, T. C. Wagner, A. J. Marchese, D. J. Mcfarlin

International Compressor Engineering Conference

No abstract provided.


Research Of Oil-Injected Scroll Compressor Working Process, H. Li, D. Wang, H. Wang, P. Chen Jan 1992

Research Of Oil-Injected Scroll Compressor Working Process, H. Li, D. Wang, H. Wang, P. Chen

International Compressor Engineering Conference

No abstract provided.


Study Of Pneumatic Damping Behaviour For Reciprocating Compressor’S Valves, M. Lin, L. Sheng Jan 1992

Study Of Pneumatic Damping Behaviour For Reciprocating Compressor’S Valves, M. Lin, L. Sheng

International Compressor Engineering Conference

No abstract provided.


Study Of The Valve Element Motion And The Gas Flow In The Straight-Flow Valves, K. M. Ignatiev, I. B. Pirumov, B. S. Chrustalyov, M. M. Perevozchikov, V. B. Zdalinsky, M. Esper Jan 1992

Study Of The Valve Element Motion And The Gas Flow In The Straight-Flow Valves, K. M. Ignatiev, I. B. Pirumov, B. S. Chrustalyov, M. M. Perevozchikov, V. B. Zdalinsky, M. Esper

International Compressor Engineering Conference

No abstract provided.


A Cad System For Twin-Screw Compressors, Z. Xing, D. Deng, P. Shu Jan 1992

A Cad System For Twin-Screw Compressors, Z. Xing, D. Deng, P. Shu

International Compressor Engineering Conference

No abstract provided.


Research On The Discharge Port Of Scroll Oil Pump, D. Wang, J. Zhu Jan 1992

Research On The Discharge Port Of Scroll Oil Pump, D. Wang, J. Zhu

International Compressor Engineering Conference

No abstract provided.


Development Of A Computer Simulation Program For The Acoustic Tuning Of Rolling Piston Compressors, G. Prater, E. E. Ratterman Jan 1992

Development Of A Computer Simulation Program For The Acoustic Tuning Of Rolling Piston Compressors, G. Prater, E. E. Ratterman

International Compressor Engineering Conference

No abstract provided.


A Modern Way To Good Screw Rotors, S. E. Edstrom Jan 1992

A Modern Way To Good Screw Rotors, S. E. Edstrom

International Compressor Engineering Conference

No abstract provided.


Software Support For Screw Row Design, Manufacture And Quality Control, C. Bennewitz Jan 1992

Software Support For Screw Row Design, Manufacture And Quality Control, C. Bennewitz

International Compressor Engineering Conference

No abstract provided.


A Novel Approach To Instrumentation And Application For Ocr Measurement In Refrigeration System, A. Wada, M. Nomura, K. Tsuboi, K. Kutsuna, T. Nabeta Jan 1992

A Novel Approach To Instrumentation And Application For Ocr Measurement In Refrigeration System, A. Wada, M. Nomura, K. Tsuboi, K. Kutsuna, T. Nabeta

International Compressor Engineering Conference

No abstract provided.


Analytical And Experimental Investigation Of A Scroll Compressor Lubrication System, R. T. Drost, J. F. Quesada Jan 1992

Analytical And Experimental Investigation Of A Scroll Compressor Lubrication System, R. T. Drost, J. F. Quesada

International Compressor Engineering Conference

No abstract provided.


Improved Characteristics Of Stainless Compressor Valve Steel, S. Olsson Jan 1992

Improved Characteristics Of Stainless Compressor Valve Steel, S. Olsson

International Compressor Engineering Conference

No abstract provided.


The Advantages Of A High Pressure Housing In A Hermetic Compressor, E. D. Fry Jan 1992

The Advantages Of A High Pressure Housing In A Hermetic Compressor, E. D. Fry

International Compressor Engineering Conference

No abstract provided.


The Mathematical Model Of Rolling Piston Compressor And Its Application, Z. Jiang, H. Li, Z. Dong Jan 1992

The Mathematical Model Of Rolling Piston Compressor And Its Application, Z. Jiang, H. Li, Z. Dong

International Compressor Engineering Conference

No abstract provided.


One Dimensional Non-Steady Flow In Compressor Pipes Simulated By A Modified Inverse Marching Method Of Characteristics, L. Rosa, R. Tosato Jan 1992

One Dimensional Non-Steady Flow In Compressor Pipes Simulated By A Modified Inverse Marching Method Of Characteristics, L. Rosa, R. Tosato

International Compressor Engineering Conference

No abstract provided.


Helical Coil Suspension Springs In Finite Element Models Of Compressors, A. D. Kelly, C. E. Knight Jan 1992

Helical Coil Suspension Springs In Finite Element Models Of Compressors, A. D. Kelly, C. E. Knight

International Compressor Engineering Conference

No abstract provided.


Dynamic Finite Element Modeling And Analysis Of A Hermetic Reciprocating Compressor, A. D. Kelly, C. E. Knight Jan 1992

Dynamic Finite Element Modeling And Analysis Of A Hermetic Reciprocating Compressor, A. D. Kelly, C. E. Knight

International Compressor Engineering Conference

No abstract provided.