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Articles 10531 - 10560 of 13413
Full-Text Articles in Entire DC Network
University Of Rochester Medical Center Symbol Development, Nancy Fisher
University Of Rochester Medical Center Symbol Development, Nancy Fisher
Theses
None provided.
Nexus: Painting As A Link To A Primary Reality, Karen Sardisco
Synthesis And Characterization Of Poly(Amide-Sulfonamides): New Candidates For Reverse Osmosis Membranes., Thevarak Rochanapruk
Synthesis And Characterization Of Poly(Amide-Sulfonamides): New Candidates For Reverse Osmosis Membranes., Thevarak Rochanapruk
Theses
Commercially available aromatic diamines such as 4,4'-diamino diphenyl ether and 4,4'-diamino diphenyl methylene were treated with N-acetylsulf anilyl chloride to give the amino-sulf onamido-acetanilide derivatives. These derivatives were treated with 6 M hydrochloric acid to give the diamine monomers containing a preformed sulfonamide linkage. These monomers were polymerized with various diacid chlorides using a low temperature solution technique. Polymerizations using the Yamazaki reaction have also been investigated. The polymers obtained were characterized using infrared spectroscopy, thermal gravimetric analysis and differential scanning calorimetry.
Optimization Of An Elastic Drive Belt System Using An Algorithm Of Automated Optimal Design, Gerald T. Lioy
Optimization Of An Elastic Drive Belt System Using An Algorithm Of Automated Optimal Design, Gerald T. Lioy
Theses
In this design project an elastic drive belt system is optimized using an algorithm of automated optional design, AOD. First, some basic background information on AOD and elastic drive belt systems is reviewed. An elastic drive belt system configuration is defined, mathematically formulated, and optimized. The mathematical formulation, including a set of constraints, is completely derived. It is set up to be as general as possible so that it may be applied to a wide variety of different problems. In several places the formulation uses the recommendations of an elastic drive belt manufacturer for a good design. A sample design …
Model Automatic Focusing System For Linewidth Measuring Instruments, John Ingraham
Model Automatic Focusing System For Linewidth Measuring Instruments, John Ingraham
Theses
This paper discusses research on an automatic focusing system for IC-linewidth measuring instruments. The instrument incorporates a collimated light source, a device to move a sample in small, precise increments, and a charge-coupled device. The autofocusing model would measure the step-height of a dielectric sample and correlate the height to a focus position. Thickness of samples on an enlarged scale were measured to verify the feasibility of this device.
The Creative Imagination, Dorothy Sholtis
A Comparative Analysis Of Dna Molecular Crosslinking By Dichloro-N-Substituted Azaadamantane Isomers, Harry Robbins
A Comparative Analysis Of Dna Molecular Crosslinking By Dichloro-N-Substituted Azaadamantane Isomers, Harry Robbins
Theses
A series of anti, anti-dichloro-N-substituted azaadamantanes have been synthesized (Henkel et al, 1981, J. Org. Chem. , 46, 3483) representing conformationally rigid nitrogen mustards incorporated into an adamantyl framework with well defined stereochemistry and fixed separation distances between alkylating centers of 3.6 A (1) and 2.5 X (2,3) (Henkel et al, 1981, J. Org. Chem., 46, 3483) to be used as structurally rigid probes of DNA alkylation and intermolecular crosslink formation leading to cytotoxicity. The aqueous solution stability and the extent of intermolecular DNA crosslink formation for both the N-methyl and N-piperdinoethyl series of isomers have been measured using novel …
Reporter - April 26th 1985, Rit Reporter Staff
Reporter - April 26th 1985, Rit Reporter Staff
University Publications
No abstract provided.
Attitudes And Evolution; A Profile Of My Work, Amy Ellen Anthony
Attitudes And Evolution; A Profile Of My Work, Amy Ellen Anthony
Theses
None provided.
Reporter - April 19th 1985, Rit Reporter Staff
Reporter - April 19th 1985, Rit Reporter Staff
University Publications
No abstract provided.
The Use Of Edge Gradient Analysis On Chrome And Emulsion Photomasks To Determine Modulation Transfer Functions, Marcy E. Levin
The Use Of Edge Gradient Analysis On Chrome And Emulsion Photomasks To Determine Modulation Transfer Functions, Marcy E. Levin
Theses
Using edge gradient analysis on chrome and emulsion photomasks to determine the modulation transfer function of a mask making system proved to be limited by the method in which the edge gradients were observed. Scanning electron micrographs were taken of the chrome and emulsion edges on various masks, and results showed that chrome photosmasks exhibit steeper gradients and better edge acuity than emulsion images. However, due to the ratio of line size to gradient size on each of the types of masks, it was decided that the gradient would not make a significant contribution to modulation loss in the image.
R.I.T. News & Events - April 18, 1985, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - April 18, 1985, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
The Measurement Of Scatter And Absorption Using Three Spectrophotometric Techniques, Christopher Pearson
The Measurement Of Scatter And Absorption Using Three Spectrophotometric Techniques, Christopher Pearson
Theses
Three methods for scattering and absorption measurements were compared for correlation; Kubelka-Munk, 4pi and an in transmission compartment scattering measurement method. The results indicated highest correlation between the 4pi and Kubelka-Munk absorption measurements. The 4pi and Kubelka-Munk scattering measurements had the highest correlation for scattering, and almost no correlation was found between Kubelka-Munk and in transmission compartment scattering measurements.
The Effect Of Cross-Coupling On The Temporal Response Of Ultrasonic Transducer Arrays, David Hadley
The Effect Of Cross-Coupling On The Temporal Response Of Ultrasonic Transducer Arrays, David Hadley
Theses
An investigation was performed examining a possible cause of acoustic cross-coupling in ultrasonic transducer arrays. It was postulated that pulse velocity was decreased due to the physical presence of other ultrasonic pulses in the medium. It was demonstrated that average pulse velocity is independent of the number of opposing waves traveling through an acoustic medium. A description of variable pulse velocity is discussed.
Reporter - April 12th 1985, Rit Reporter Staff
Reporter - April 12th 1985, Rit Reporter Staff
University Publications
No abstract provided.
Spectrophotometric Color Formulation Based On Two-Constant Kubelka-Munk Theory, Eric Walowit
Spectrophotometric Color Formulation Based On Two-Constant Kubelka-Munk Theory, Eric Walowit
Theses
A new approach to computer color formulation based on non-linear least-squares techniques has been developed to characterize colorants and predict their behavior in mixtures. This approach allows the optimization of absorption and scattering calculations to characterize these colorants. This same method has been used to directly match the spectral reflectance of a standard with a mixture of colorants that yields nearly the same spectral reflectance as the standard being matched. Several advantages have been gained over more traditional methods: Kubelka-Munk K and S has been determined without primary binary blends, the spectral reflectance of the standard and proposed formulation exhibit …
A Method For Comparison Of Anti-Reflection Coatings For Photoresist Via A Simple Computer Algorithm, Neil Levine
A Method For Comparison Of Anti-Reflection Coatings For Photoresist Via A Simple Computer Algorithm, Neil Levine
Theses
A method was achieved to allow a quantitative and rapid comparison of different anti-reflection coatings (ARC) used under the photoresist layer in semiconductor-device fabrication. The computer algorithm utilizes the spectral irradiance of the source, reflectance of the substrate, absorption of the photoresist and ARC, and the spectral sensitivity of the photoresist to provide a quantitative value of the total system response to reflectance. The algorithm was tested by correlating the resultant value with photoresist resolution on aluminum, polysilicon, and 2nd-oxide process layers, and found to be linear with an R-squared value of 0.99S5 within the region investigated. Subsequent statistical analysis …
Reporter - April 5th 1985, Rit Reporter Staff
Reporter - April 5th 1985, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - April 4, 1985, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - April 4, 1985, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Distorter - April 1st 1985, Rit Reporter Staff
Distorter - April 1st 1985, Rit Reporter Staff
University Publications
No abstract provided.
The Artist In Society, Ann Demarle-Pollak
The Determination Of Paper Spread Functions And Their Fourier Transforms From Kubelka-Munk Absorption And Scattering Measurements, Brian Pridham
The Determination Of Paper Spread Functions And Their Fourier Transforms From Kubelka-Munk Absorption And Scattering Measurements, Brian Pridham
Theses
In the study of imaging on paper, the effect of the penetration of light into the paper is usually neglected. Measurements show that light does not emerge from the paper sample at the same spot where it entered. The manner in which the light spreads through the paper is described by the spread function of the paper. It was suspected that an estimation of the paper spread function and its Fourier transform could be made based on the Kubelka-Munk absorption (K) and scattering (S) coefficients of the paper using a general diffusion model. The results show that an estimate of …
A Question Of Reality, Bruce Chapin
In-Line Process Monitoring Of Spray Developed Diazoquinone Photoresist, Kenneth Sautter
In-Line Process Monitoring Of Spray Developed Diazoquinone Photoresist, Kenneth Sautter
Theses
As the minimum feature size of IC devices is reduced, the control of linewidth becomes moire and more critical. An in-line process monitor for spray developed diazoquinone-type photoresist has been constructed which enables a spin-developing module to automatically compensate for the numerous variables which can affect linewidths. The development time of a wafer is varied depending on the dissolution rate of the photoresist. Development is monitored by reflecting light from the wafer surface which is sensed by a photodiode. Variable development time has been shown to control linewidths as exposure dose and photoresist coating thickness were changed. The relationship between …
Reporter - March 29th 1985, Rit Reporter Staff
Reporter - March 29th 1985, Rit Reporter Staff
University Publications
No abstract provided.
Reporter - March 22nd 1985, Rit Reporter Staff
Reporter - March 22nd 1985, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - March 21, 1985, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - March 21, 1985, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Reporter - March 15th 1985, Rit Reporter Staff
Reporter - March 15th 1985, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - March 7, 1985, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - March 7, 1985, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Ntid Focus Spring 1985, Ntid Marketing And Communications
Ntid Focus Spring 1985, Ntid Marketing And Communications
National Technical Institute for the Deaf Papers
A Conversation With...||An Old World Sabbatical||Becoming Better Teachers||Focus on... Audrey Ritter||From the Director's Desk: Meeting the Challenge||Going for the Gold||It's Never Too Late To Learn||Newsline||Rubella-A Report||William Eiffler: Peace Corps Award Winner