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Articles 10951 - 10980 of 13413
Full-Text Articles in Entire DC Network
R.I.T. News & Events - September 30, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - September 30, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Evaluation Of The Image Quality Of An Experimental Lenticular Film System For Radiographic Applications, Elizabeth A. Butler
Evaluation Of The Image Quality Of An Experimental Lenticular Film System For Radiographic Applications, Elizabeth A. Butler
Theses
A lenticular film system designed to suppress image degrading crossover during dual screen radiographic exposure is proposed and evaluated. The lenticular screen consists of two sheets of crossed cylindrical lenslets each with a frequency of 25 lenslets/mm. A numerical analysis via optical ray tracing compares the theoretical frequency response of the proposed system to that of a conventional radiographic film. It shows an enhancement in the response by a factor of two, for frequencies 1-4 c/mm. Experimental measurements made on simulations of the proposed system using Kodak film type, SO-241 confirm the predicted improvement in the mid-frequency range. The proposed …
Reporter - September 24th 1982, Rit Reporter Staff
Reporter - September 24th 1982, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - September 23, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - September 23, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
R.I.T. News & Events - September 23, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - September 23, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Reporter - September 17th 1982, Rit Reporter Staff
Reporter - September 17th 1982, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - September 16, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - September 16, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Reporter - September 10th 1982, Rit Reporter Staff
Reporter - September 10th 1982, Rit Reporter Staff
University Publications
No abstract provided.
R.I.T. News & Events - September 9, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - September 9, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Direct Diffusion Resist For Gravure, Wilson Hurst
Direct Diffusion Resist For Gravure, Wilson Hurst
Theses
One of the most attractive attributes of the gravure process is its ability to print a variable ink film by virtue of cell depth variation. This cell depth variation is achieved through the use of a diffusion resist. All diffusion resists are negative-working and, after exposure, require transfer to plate or cylinder. A "negative-working" resist is one where the emulsion becomes insoluble to the developing solution in those areas struck by actinic radiation. Presently available resists, which are directly applied to plate or cylinder prior to exposure, are not capable of controlling cell depth variation. Thus, the tone range obtainable …
Paper Coating Constituents And Their Influence On Chemical Ghosting, Craig Harmsen
Paper Coating Constituents And Their Influence On Chemical Ghosting, Craig Harmsen
Theses
For many years the printing industry, specifically sheetfed offset and letterpress printers, have been dealing with the problem of chemical ghosting. Traditionally it has been, a problem associated with drying oil inks. More recent research concludes that ghosting is also affected by the permeability of an adjacent substrate. This thesis examines paper coating constituents, their degree of concentration, and what influence they play- with regards to ghosting. A quickset drying oil ink has been found which when subjected to the proper laboratory conditions will display a high degree of colored ghosting. The thesis indicates the method of creating ghosting and …
Ntid Focus Fall 1982, Ntid Marketing And Communications
Ntid Focus Fall 1982, Ntid Marketing And Communications
National Technical Institute for the Deaf Papers
Charting a New Course||Experiential Learning: Falling Down on the Job||IBM Faculty Loan Program Yields Dividends for NTID||Leading the Way||Ma Bell Opens Lines to Disabled||NTID News||Portrait of the Photographer as a Young Man||Simmons Energizes RIT||Sincere Flattery||The Focus Survey: Your Responses||Urban Planning Project||Vision Screening Aids Student Career Choices
R.I.T. News & Events - August 19, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - August 19, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
R.I.T. News & Events - August 19, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - August 19, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Alphabet Soup, Beth April Smolev
R.I.T. News & Events - August 5, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - August 5, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
An Investigation Of The Effect Of An Infrared Post-Exposure Latent Image In A 3m Dry Silver Film, Thomas J. Cardinali
An Investigation Of The Effect Of An Infrared Post-Exposure Latent Image In A 3m Dry Silver Film, Thomas J. Cardinali
Theses
An investigation to determine the effect of an infrared post-exposure on the latent image in blue sensitive 3M Dry Silver film 7842 was performed. The film was first given a step tablet exposure using the unfiltered output of a tungsten source at 2856 K. A Wratten #87C filter was used with the same source to provide the second, infrared exposure over one half of the first exposure area. Absolute exposure and exposure reciprocity were tested. Processing was by immersion into a bath of 3M fluorocarbon FC-43 maintained at 127C/260F. The original objective, to cause Herschel effect bleaching of latent image, …
Investigation Of The Electronic And Thermal Rearrangement Properties Of Spiro[2,4]Hepta-4,6-Dienes, Raymond K. Crandall
Investigation Of The Electronic And Thermal Rearrangement Properties Of Spiro[2,4]Hepta-4,6-Dienes, Raymond K. Crandall
Theses
The mechanism of thermally induced hydrogen and alkyl migrations in suitably substituted cyclopentadienes have been extensively studied. Although the course and mechanism of alkyl shifts in cyclopentadienes have been investigated, there is currently a lack of agreement on the precise mechanisms of alkyl migrations. It is apparent that the mechanism is largely dependent on the nature of both the migrating substituent and upon other substituents in the molecule and, in some cases, the shift may occur by more than one competing mechanism. Alkyl shifts in spiro substituted cyclopentadienes have been clearly shown to proceed via a conceited pathway. However, the …
The Preoperative Treatment Of Severely Anemic Patients With A Perfluorochemical Oxygen-Transport Fluid, Fluosol-Da, K. Tremper, Alan Friedman, E. Levine
The Preoperative Treatment Of Severely Anemic Patients With A Perfluorochemical Oxygen-Transport Fluid, Fluosol-Da, K. Tremper, Alan Friedman, E. Levine
Articles
We gave a perfluorochemical oxygen-transport fluid and plasma expander, Fluosol-DA, to seven severely anemic patients before surgery to determine its effectiveness in supplementing oxygen transport. The dose of Fluosol in the five patients completing the study was 20 ml per kilogram of body weight. When the patients breathed low levels of supplemental oxygen (mean partial pressure of arterial oxygen +/- S.D., 101 +/- 25 torr), the perfluorochemical carried a small amount of oxygen, but when they received pure oxygen (arterial oxygen pressure, 361 +/- 65 torr) it carried approximately 0.8 per cent of oxygen (by volume). This increase accounted for …
R.I.T. News & Events - July 22, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - July 22, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
R.I.T. News & Events - July 22, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - July 22, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Polymerization Of Disubstituted Conjugated Dienes: Synthesis Of 1, 3-Diphenyl-1, 3-Butadiene, David Allen
Polymerization Of Disubstituted Conjugated Dienes: Synthesis Of 1, 3-Diphenyl-1, 3-Butadiene, David Allen
Theses
1, 3-Diphehyl-l, 3-butadiene 3 has been found to rapidly undergo the Diels-Alder reaction at room temperature to yield 1, 3, 4-triphenyl-4-styrylcyclohexene 10. The dimer was characterized by elemental analysis, infrared and nuclear magnetic resonance spectrosopy. The isomeric diphenylbutadienes were of interest as a model system to study the interaction of steric hindrance and electronic effects in the homopolymerization of disubstituted butadienes. Several synthetic routes to an appropriate tosylate for base catalyzed elimination at low temperatures to avoid dimerization of the monomer were explored and found unsuccessful for various reasons. The monomer was trapped as an iron tricarbonyl complex. This complex …
R.I.T. News & Events - July 1, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - July 1, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
Reporter - Summer 1982, Rit Reporter Staff
Reporter - Summer 1982, Rit Reporter Staff
University Publications
No abstract provided.
The Atmospheric Photochemical Stability Of Cc1f2no, Cc12fno, Cc1fno2, And Cc12fno2, George Fazekas
The Atmospheric Photochemical Stability Of Cc1f2no, Cc12fno, Cc1fno2, And Cc12fno2, George Fazekas
Theses
CC1F2N0, CC1F2N0, CC1F2N02 and CC12FN02 were prepared and purified in the laboratory. Three methods for the preparation of chlorodifluoronitrosomethane were evaluated: 1) decarboxylation of the sodium salt of chlorodifluoroacetic acid in the presence of nitrosyl chloride, 2) nitrosation of chlorodifluoromethanesulfenylchoride and 3) photolysis of bromodichlorofluoromethane in the presence of nitric oxide. The vapor phase decarboxylation of the sodium salt of chlorodifluoroacetic acid in the presence of nitrosyl chloride gave chlorodifluoronitrosomethane with the highest yield and purity. Because the sodium salt of dichlofluoroacetic acid was not available to utilize in a similar manner, dichlorofluoronitrosomethane was prepared from the reaction of dichlorofluoromethanesulfenylchloride …
Dyad: Biography Of A Relationship, John Fergus-Jean
The Design And Production Of Graininess Samples Using An Ordered Array Binary Imaging System, Paul W. Jones
The Design And Production Of Graininess Samples Using An Ordered Array Binary Imaging System, Paul W. Jones
Theses
A technique is described for producing graininess samples using an ordered array binary imaging device with subsequent photographic and lithographic steps. Such samples could be combined to form a visual scale for use in the rapid assessment of solid area noise of electrophotographic images. The potential advantages of this process include high volume production capabilities and the ease of varying image parameters over a wide range. Analytical models for mean density and Wiener spectrum scale value, WS(0), are developed for the ordered array system and are shown to have general applicability. However, these models are neither precise nor accurate enough …
On The Use Of Cognitive Principles And The Personalized System Of Instruction In Computer Science Education, James Bradley
On The Use Of Cognitive Principles And The Personalized System Of Instruction In Computer Science Education, James Bradley
Theses
None provided.
R.I.T. News & Events - June 17, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - June 17, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.
R.I.T. News & Events - June 17, 1982, University News Services, Rochester Institute Of Technology
R.I.T. News & Events - June 17, 1982, University News Services, Rochester Institute Of Technology
University Publications
No abstract provided.